Navigation group

Home banner.

Ice climbing under aurora

Where scientists empower society

Creating solutions for healthy lives on a healthy planet.

most-cited publisher

largest publisher

2.5 billion

article views and downloads

Main Content

  • Editors and reviewers
  • Collaborators

Male doctor examining petri dish at laboratory while coworker working in background

Find a journal

We have a home for your research. Our community led journals cover more than 1,500 academic disciplines and are some of the largest and most cited in their fields.

Confident young woman gesturing while teaching students in class

Submit your research

Start your submission and get more impact for your research by publishing with us.

Active senior woman concentrating while working on laptop

Author guidelines

Ready to publish? Check our author guidelines for everything you need to know about submitting, from choosing a journal and section to preparing your manuscript.

Smiling colleagues doing research over laptop computer on desk in office

Peer review

Our efficient collaborative peer review means you’ll get a decision on your manuscript in an average of 61 days.

Interior of a library with desks and bookshelves

Article publishing charges (APCs) apply to articles that are accepted for publication by our external and independent editorial boards

Group of international university students having fun studying in library, three colleagues of modern work co-working space talking and smiling while sitting at the desk table with laptop computer

Press office

Visit our press office for key media contact information, as well as Frontiers’ media kit, including our embargo policy, logos, key facts, leadership bios, and imagery.

Back view of man presenting to students at a lecture theatre

Institutional partnerships

Join more than 555 institutions around the world already benefiting from an institutional membership with Frontiers, including CERN, Max Planck Society, and the University of Oxford.

Happy senior old korean businesswoman discussing online project on laptop with african american male colleague, working together in pairs at shared workplace, analyzing electronic documents.

Publishing partnerships

Partner with Frontiers and make your society’s transition to open access a reality with our custom-built platform and publishing expertise.

Welsh Assembly debating chamber, UK.

Policy Labs

Connecting experts from business, science, and policy to strengthen the dialogue between scientific research and informed policymaking.

Smiling African American Woman Talking to Boss in Office

How we publish

All Frontiers journals are community-run and fully open access, so every research article we publish is immediately and permanently free to read.

Front view portrait of African American man wearing lab coat and raising hand asking question while sitting in audience and listening to lecture on medicine

Editor guidelines

Reviewing a manuscript? See our guidelines for everything you need to know about our peer review process.

Shaking hands. African American dark-skinned man touching hands of his light-skinned workmate in greeting gesture

Become an editor

Apply to join an editorial board and collaborate with an international team of carefully selected independent researchers.

Scientist looking at 3D rendered graphic scans from Magnetic Resonance Imaging (MRI) scanner, close up

My assignments

It’s easy to find and track your editorial assignments with our platform, 'My Frontiers' – saving you time to spend on your own research.

Photo of a forested area overlooking a smoggy cityscape

Scientists call for urgent action to prevent immune-mediated illnesses caused by climate change and biodiversity loss

Climate change, pollution, and collapsing biodiversity are damaging our immune systems, but improving the environment offers effective and fast-acting protection.

winter kayaking in Antarctica, extreme sport adventure, people paddling on kayak near iceberg

Safeguarding peer review to ensure quality at scale

Making scientific research open has never been more important. But for research to be trusted, it must be of the highest quality. Facing an industry-wide rise in fraudulent science, Frontiers has increased its focus on safeguarding quality.

FSCI_Hub_Inflammation_Vodovotz_Hub-header_Square

Chronic stress and inflammation linked to societal and environmental impacts in new study 

Scientists hypothesize that as-yet unrecognized inflammatory stress is spreading among people at unprecedented rates, affecting our cognitive ability to address climate change, war, and other critical issues.

jellyfish in aquarium in greece

Tiny crustaceans discovered preying on live jellyfish during harsh Arctic night

Scientists used DNA metabarcoding to show for the first time that jellyfish are an important food for amphipods during the Arctic polar night in waters off Svalbard, at a time of year when other food resources are scarce.

3d rendered illustration of of an astronaut infront of mars

Why studying astronauts’ microbiomes is crucial to ensure deep space mission success

In a new Frontiers’ guest editorial, Prof Dr Lembit Sihver, director of CRREAT at the Nuclear Physics Institute of the Czech Academy of Sciences and his co-authors explore the impact the microbiome has on human health in space.

Caucasian female holding delicious pizza slice eating takeaway food delivery while watching comedy film on television at night. Woman enjoying junk-food home delivered relaxing on couch

Cake and cookies may increase Alzheimer’s risk: Here are five Frontiers articles you won’t want to miss

At Frontiers, we bring some of the world’s best research to a global audience. But with tens of thousands of articles published each year, it’s impossible to cover all of them. Here are just five amazing papers you may have missed.

Young Asian male electrical engineer in glasses using a digital multimeter in hand checking voltage to fix an industrial machine with a blurred of automation robotic arm machine in the foreground.

2024's top 10 tech-driven Research Topics

Frontiers has compiled a list of 10 Research Topics that embrace the potential of technology to advance scientific breakthroughs and change the world for the better.

Get the latest research updates, subscribe to our newsletter

Journals By Subject    |    Journals A - Z

Architecture / Design

Biomedicine, business and management, computer science, earth sciences, engineering, environment, life sciences, materials science, mathematics, medicine & public health, science, humanities and social sciences, multidisciplinary, social sciences.

Browse article collections by subject.

  • Built Heritage
  • Cellular and Molecular Neurobiology
  • Future Business Journal
  • International Journal of Corporate Social Responsibility
  • Journal of Innovation and Entrepreneurship
  • Journal of Shipping and Trade
  • Schmalenbach Journal of Business Research
  • Applied Biological Chemistry
  • Bioresources and Bioprocessing
  • Fashion and Textiles
  • Journal of Analytical Science and Technology
  • Journal of Umm Al-Qura University for Applied Sciences
  • Applied Network Science
  • Brain Informatics
  • Cybersecurity
  • Energy Informatics
  • EPJ Data Science
  • International Journal of Educational Technology in Higher Education
  • Journal of Big Data
  • Journal of Cloud Computing
  • Visual Computing for Industry, Biomedicine, and Art
  • International Journal of Implant Dentistry
  • Maxillofacial Plastic and Reconstructive Surgery
  • Progress in Orthodontics
  • Earth, Planets and Space
  • Geoscience Letters
  • Geothermal Energy
  • Progress in Earth and Planetary Science
  • Swiss Journal of Geosciences
  • Swiss Journal of Palaeontology
  • Agricultural and Food Economics
  • Financial Innovation
  • Journal for Labour Market Research
  • Journal of Economic Structures
  • Marine Development
  • Swiss Journal of Economics and Statistics
  • Asian-Pacific Journal of Second and Foreign Language Education
  • Disciplinary and Interdisciplinary Science Education Research
  • Empirical Research in Vocational Education and Training
  • International Journal of Child Care and Education Policy
  • International Journal of STEM Education
  • Language Testing in Asia
  • Large-scale Assessments in Education
  • Smart Learning Environments
  • Sustainable Energy Research
  • Advanced Modeling and Simulation in Engineering Sciences
  • Advances in Aerodynamics
  • Advances in Bridge Engineering
  • AI Perspectives & Advances
  • Chinese Journal of Mechanical Engineering
  • EURASIP Journal on Advances in Signal Processing
  • EURASIP Journal on Audio, Speech, and Music Processing
  • EURASIP Journal on Image and Video Processing
  • EURASIP Journal on Information Security
  • EURASIP Journal on Wireless Communications and Networking
  • European Transport Research Review
  • International Journal of Concrete Structures and Materials
  • Journal of Electrical Systems and Information Technology
  • Journal of Engineering and Applied Science
  • Journal of Infrastructure Preservation and Resilience
  • Journal of Materials Science: Materials in Engineering
  • Journal of Umm Al-Qura University for Engineering and Architecture
  • Micro and Nano Systems Letters
  • Moore and More
  • ROBOMECH Journal
  • Satellite Navigation
  • Ecological Processes
  • Environmental Sciences Europe
  • Environmental Systems Research
  • Geoenvironmental Disasters
  • City, Territory and Architecture
  • European Journal of Futures Research
  • Journal of International Humanitarian Action
  • AMB Express
  • Animal Cognition
  • Botanical Studies
  • Cell Regeneration
  • Chemical and Biological Technologies in Agriculture
  • Crop Health
  • Egyptian Journal of Biological Pest Control
  • Fire Ecology
  • Horticulture Advances
  • Journal of Wood Science
  • Natural Products and Bioprospecting
  • The Journal of Basic and Applied Zoology
  • Applied Microscopy
  • Collagen and Leather
  • Functional Composite Materials
  • Heritage Science
  • Journal of Materials Science: Materials Theory
  • Microplastics and Nanoplastics
  • Nano Convergence
  • Advances in Continuous and Discrete Models
  • Boundary Value Problems
  • Fixed Point Theory and Algorithms for Sciences and Engineering
  • Journal of Inequalities and Applications
  • Journal of Mathematics in Industry
  • African Journal of Urology
  • Annals of Intensive Care
  • Beni-Suef University Journal of Basic and Applied Sciences
  • Blood Research
  • Bulletin of Faculty of Physical Therapy
  • Clinical Phytoscience
  • CVIR Endovascular Open peer review
  • Egyptian Journal of Forensic Sciences
  • Egyptian Journal of Medical Human Genetics
  • Egyptian Journal of Neurosurgery
  • Egyptian Journal of Radiology and Nuclear Medicine
  • Egyptian Liver Journal
  • Egyptian Pediatric Association Gazette
  • Egyptian Rheumatology and Rehabilitation
  • EJNMMI Physics
  • EJNMMI Radiopharmacy and Chemistry
  • EJNMMI Reports
  • EJNMMI Research
  • European Radiology Experimental
  • Future Journal of Pharmaceutical Sciences
  • Insights into Imaging
  • Intensive Care Medicine Experimental
  • International Journal of Bipolar Disorders
  • JA Clinical Reports
  • Journal of Ophthalmic Inflammation and Infection
  • Journal of Orthopaedics and Traumatology
  • Journal of Patient-Reported Outcomes
  • Journal of the Egyptian National Cancer Institute
  • Journal of the Egyptian Public Health Association
  • Middle East Current Psychiatry
  • Middle East Fertility Society Journal
  • Molecular and Cellular Pediatrics
  • Sports Medicine - Open
  • The Cardiothoracic Surgeon
  • The Egyptian Heart Journal
  • The Egyptian Journal of Bronchology
  • The Egyptian Journal of Internal Medicine
  • The Egyptian Journal of Neurology, Psychiatry and Neurosurgery
  • The Egyptian Journal of Otolaryngology
  • The Ultrasound Journal
  • eLight Transparent peer review
  • EPJ Quantum Technology
  • EPJ Techniques and Instrumentation
  • Surface Science and Technology
  • Cognitive Research: Principles and Implications
  • Psicologia: Reflexão e Crítica
  • Bulletin of the National Research Centre
  • Comparative Migration Studies
  • International Journal of Anthropology and Ethnology
  • The Journal of Chinese Sociology

Article type icon

21 Legit Research Databases for Free Journal Articles in 2022

#scribendiinc

Written by  Scribendi

Has this ever happened to you? While looking for websites for research, you come across a research paper site that claims to connect academics to a peer-reviewed article database for free.

Intrigued, you search for keywords related to your topic, only to discover that you must pay a hefty subscription fee to access the service. After the umpteenth time being duped, you begin to wonder if there's even such a thing as free journal articles .

Subscription fees and paywalls are often the bane of students and academics, especially those at small institutions who don't provide access to many free article directories and repositories.

Whether you're working on an undergraduate paper, a PhD dissertation, or a medical research study, we want to help you find tools to locate and access the information you need to produce well-researched, compelling, and innovative work.

Below, we discuss why peer-reviewed articles are superior and list out the best free article databases to use in 2022.

Download Our Free Research Database Roundup PDF

Why peer-reviewed scholarly journal articles are more authoritative.

Peer-Reviewed Articles

Determining what sources are reliable can be challenging. Peer-reviewed scholarly journal articles are the gold standard in academic research. Reputable academic journals have a rigorous peer-review process.

The peer review process provides accountability to the academic community, as well as to the content of the article. The peer review process involves qualified experts in a specific (often very specific) field performing a review of an article's methods and findings to determine things like quality and credibility.

Peer-reviewed articles can be found in peer-reviewed article databases and research databases, and if you know that a database of journals is reliable, that can offer reassurances about the reliability of a free article. Peer review is often double blind, meaning that the author removes all identifying information and, likewise, does not know the identity of the reviewers. This helps reviewers maintain objectivity and impartiality so as to judge an article based on its merit.

Where to Find Peer-Reviewed Articles

Peer-reviewed articles can be found in a variety of research databases. Below is a list of some of the major databases you can use to find peer-reviewed articles and other sources in disciplines spanning the humanities, sciences, and social sciences.

What Are Open Access Journals?

An open access (OA) journal is a journal whose content can be accessed without payment. This provides scholars, students, and researchers with free journal articles . OA journals use alternate methods of funding to cover publication costs so that articles can be published without having to pass those publication costs on to the reader.

Open Access Journals

Some of these funding models include standard funding methods like advertising, public funding, and author payment models, where the author pays a fee in order to publish in the journal. There are OA journals that have non-peer-reviewed academic content, as well as journals that focus on dissertations, theses, and papers from conferences, but the main focus of OA is peer-reviewed scholarly journal articles.

The internet has certainly made it easier to access research articles and other scholarly publications without needing access to a university library, and OA takes another step in that direction by removing financial barriers to academic content.

Choosing Wisely

Features of legitimate oa journals.

 There are things to look out for when trying to decide if a free publication journal is legitimate:

Mission statement —The mission statement for an OA journal should be available on their website.

Publication history —Is the journal well established? How long has it been available?

Editorial board —Who are the members of the editorial board, and what are their credentials?

Indexing —Can the journal be found in a reliable database?

Peer review —What is the peer review process? Does the journal allow enough time in the process for a reliable assessment of quality?

Impact factor —What is the average number of times the journal is cited over a two-year period?

Features of Illegitimate OA Journals

There are predatory publications that take advantage of the OA format, and they are something to be wary of. Here are some things to look out for:

Contact information —Is contact information provided? Can it be verified?

Turnaround —If the journal makes dubious claims about the amount of time from submission to publication, it is likely unreliable.

Editorial board —Much like determining legitimacy, looking at the editorial board and their credentials can help determine illegitimacy.

Indexing —Can the journal be found in any scholarly databases?

Peer review —Is there a statement about the peer review process? Does it fit what you know about peer review?

How to Find Scholarly Articles

Identify keywords.

Keywords are included in an article by the author. Keywords are an excellent way to find content relevant to your research topic or area of interest. In academic searches, much like you would on a search engine, you can use keywords to navigate through what is available to find exactly what you're looking for.

Authors provide keywords that will help you easily find their article when researching a related topic, often including general terms to accommodate broader searches, as well as some more specific terms for those with a narrower scope. Keywords can be used individually or in combination to refine your scholarly article search.

Narrow Down Results

Sometimes, search results can be overwhelming, and searching for free articles on a journal database is no exception, but there are multiple ways to narrow down your results. A good place to start is discipline.

What category does your topic fall into (psychology, architecture, machine learning, etc.)? You can also narrow down your search with a year range if you're looking for articles that are more recent.

A Boolean search can be incredibly helpful. This entails including terms like AND between two keywords in your search if you need both keywords to be in your results (or, if you are looking to exclude certain keywords, to exclude these words from the results).

Consider Different Avenues

If you're not having luck using keywords in your search for free articles, you may still be able to find what you're looking for by changing your tactics. Casting a wider net sometimes yields positive results, so it may be helpful to try searching by subject if keywords aren't getting you anywhere.

You can search for a specific publisher to see if they have OA publications in the academic journal database. And, if you know more precisely what you're looking for, you can search for the title of the article or the author's name.

The Top 21 Free Online Journal and Research Databases

Navigating OA journals, research article databases, and academic websites trying to find high-quality sources for your research can really make your head spin. What constitutes a reliable database? What is a useful resource for your discipline and research topic? How can you find and access full-text, peer-reviewed articles?

Fortunately, we're here to help. Having covered some of the ins and outs of peer review, OA journals, and how to search for articles, we have compiled a list of the top 21 free online journals and the best research databases. This list of databases is a great resource to help you navigate the wide world of academic research.

These databases provide a variety of free sources, from abstracts and citations to full-text, peer-reviewed OA journals. With databases covering specific areas of research and interdisciplinary databases that provide a variety of material, these are some of our favorite free databases, and they're totally legit!

CORE is a multidisciplinary aggregator of OA research. CORE has the largest collection of OA articles available. It allows users to search more than 219 million OA articles. While most of these link to the full-text article on the original publisher's site, or to a PDF available for download, five million records are hosted directly on CORE.

CORE's mission statement is a simple and straightforward commitment to offering OA articles to anyone, anywhere in the world. They also host communities that are available for researchers to join and an ambassador community to enhance their services globally. In addition to a straightforward keyword search, CORE offers advanced search options to filter results by publication type, year, language, journal, repository, and author.

CORE's user interface is easy to use and navigate. Search results can be sorted based on relevance or recency, and you can search for relevant content directly from the results screen.

Collection: 219,537,133 OA articles

Other Services: Additional services are available from CORE, with extras that are geared toward researchers, repositories, and businesses. There are tools for accessing raw data, including an API that provides direct access to data, datasets that are available for download, and FastSync for syncing data content from the CORE database.

CORE has a recommender plug-in that suggests relevant OA content in the database while conducting a search and a discovery feature that helps you discover OA versions of paywalled articles. Other features include tools for managing content, such as a dashboard for managing repository output and the Repository Edition service to enhance discoverability.

Good Source of Peer-Reviewed Articles: Yes

Advanced Search Options: Language, author, journal, publisher, repository, DOI, year

2. ScienceOpen

Functioning as a research and publishing network, ScienceOpen offers OA to more than 74 million articles in all areas of science. Although you do need to register to view the full text of articles, registration is free. The advanced search function is highly detailed, allowing you to find exactly the research you're looking for.

The Berlin- and Boston-based company was founded in 2013 to "facilitate open and public communications between academics and to allow ideas to be judged on their merit, regardless of where they come from." Search results can be exported for easy integration with reference management systems.

You can also bookmark articles for later research. There are extensive networking options, including your Science Open profile, a forum for interacting with other researchers, the ability to track your usage and citations, and an interactive bibliography. Users have the ability to review articles and provide their knowledge and insight within the community.

Collection: 74,560,631

Other Services: None

Advanced Search Options:  Content type, source, author, journal, discipline

3. Directory of Open Access Journals

A multidisciplinary, community-curated directory, the Directory of Open Access Journals (DOAJ) gives researchers access to high-quality peer-reviewed journals. It has archived more than two million articles from 17,193 journals, allowing you to either browse by subject or search by keyword.

The site was launched in 2003 with the aim of increasing the visibility of OA scholarly journals online. Content on the site covers subjects from science, to law, to fine arts, and everything in between. DOAJ has a commitment to "increase the visibility, accessibility, reputation, usage and impact of quality, peer-reviewed, OA scholarly research journals globally, regardless of discipline, geography or language."

Information about the journal is available with each search result. Abstracts are also available in a collapsible format directly from the search screen. The scholarly article website is somewhat simple, but it is easy to navigate. There are 16 principles of transparency and best practices in scholarly publishing that clearly outline DOAJ policies and standards.

Collection: 6,817,242

Advanced Search Options:  Subject, journal, year

4. Education Resources Information Center

The Education Resources Information Center (ERIC) of the Institution of Education Sciences allows you to search by topic for material related to the field of education. Links lead to other sites, where you may have to purchase the information, but you can search for full-text articles only. You can also search only peer-reviewed sources.

The service primarily indexes journals, gray literature (such as technical reports, white papers, and government documents), and books. All sources of material on ERIC go through a formal review process prior to being indexed. ERIC's selection policy is available as a PDF on their website.

The ERIC website has an extensive FAQ section to address user questions. This includes categories like general questions, peer review, and ERIC content. There are also tips for advanced searches, as well as general guidance on the best way to search the database. ERIC is an excellent database for content specific to education.

Collection: 1,292,897

Advanced Search Options: Boolean

5. arXiv e-Print Archive

The arXiv e-Print Archive is run by Cornell University Library and curated by volunteer moderators, and it now offers OA to more than one million e-prints.

There are advisory committees for all eight subjects available on the database. With a stated commitment to an "emphasis on openness, collaboration, and scholarship," the arXiv e-Print Archive is an excellent STEM resource.

The interface is not as user-friendly as some of the other databases available, and the website hosts a blog to provide news and updates, but it is otherwise a straightforward math and science resource. There are simple and advanced search options, and, in addition to conducting searches for specific topics and articles, users can browse content by subject. The arXiv e-Print Archive clearly states that they do not peer review the e-prints in the database.

Collection: 1,983,891

Good Source of Peer-Reviewed Articles: No

Advanced Search Options:  Subject, date, title, author, abstract, DOI

6. Social Science Research Network

The Social Science Research Network (SSRN) is a collection of papers from the social sciences community. It is a highly interdisciplinary platform used to search for scholarly articles related to 67 social science topics. SSRN has a variety of research networks for the various topics available through the free scholarly database.

The site offers more than 700,000 abstracts and more than 600,000 full-text papers. There is not yet a specific option to search for only full-text articles, but, because most of the papers on the site are free access, it's not often that you encounter a paywall. There is currently no option to search for only peer-reviewed articles.

You must become a member to use the services, but registration is free and enables you to interact with other scholars around the world. SSRN is "passionately committed to increasing inclusion, diversity and equity in scholarly research," and they encourage and discuss the use of inclusive language in scholarship whenever possible.

Collection: 1,058,739 abstracts; 915,452 articles

Advanced Search Options: Term, author, date, network

7. Public Library of Science

Public Library of Science (PLOS) is a big player in the world of OA science. Publishing 12 OA journals, the nonprofit organization is committed to facilitating openness in academic research. According to the site, "all PLOS content is at the highest possible level of OA, meaning that scientific articles are immediately and freely available to anyone, anywhere."

PLOS outlines four fundamental goals that guide the organization: break boundaries, empower researchers, redefine quality, and open science. All PLOS journals are peer-reviewed, and all 12 journals uphold rigorous ethical standards for research, publication, and scientific reporting.

PLOS does not offer advanced search options. Content is organized by topic into research communities that users can browse through, in addition to options to search for both articles and journals. The PLOS website also has resources for peer reviewers, including guidance on becoming a reviewer and on how to best participate in the peer review process.

Collection: 12 journals

Advanced Search Options: None

8. OpenDOAR

OpenDOAR, or the Directory of Open Access Repositories, is a comprehensive resource for finding free OA journals and articles. Using Google Custom Search, OpenDOAR combs through OA repositories around the world and returns relevant research in all disciplines.

The repositories it searches through are assessed and categorized by OpenDOAR staff to ensure they meet quality standards. Inclusion criteria for the database include requirements for OA content, global access, and categorically appropriate content, in addition to various other quality assurance measures. OpenDOAR has metadata, data, content, preservation, and submission policies for repositories, in addition to two OA policy statements regarding minimum and optimum recommendations.

This database allows users to browse and search repositories, which can then be selected, and articles and data can be accessed from the repository directly. As a repository database, much of the content on the site is geared toward the support of repositories and OA standards.

Collection: 5,768 repositories

Other Services: OpenDOAR offers a variety of additional services. Given the nature of the platform, services are primarily aimed at repositories and institutions, and there is a marked focus on OA in general. Sherpa services are OA archiving tools for authors and institutions.

They also offer various resources for OA support and compliance regarding standards and policies. The publication router matches publications and publishers with appropriate repositories.

There are also services and resources from JISC for repositories for cost management, discoverability, research impact, and interoperability, including ORCID consortium membership information. Additionally, a repository self-assessment tool is available for members.

Advanced Search Options:  Name, organization name, repository type, software name, content type, subject, country, region

9. Bielefeld Academic Search Engine

The Bielefeld Academic Search Engine (BASE) is operated by the Bielefeld University Library in Germany, and it offers more than 240 million documents from more than 8,000 sources. Sixty percent of its content is OA, and you can filter your search accordingly.

BASE has rigorous inclusion requirements for content providers regarding quality and relevance, and they maintain a list of content providers for the sake of transparency, which can be easily found on their website. BASE has a fairly elegant interface. Search results can be organized by author, title, or date.

From the search results, items can be selected and exported, added to favorites, emailed, and searched in Google Scholar. There are basic and advanced search features, with the advanced search offering numerous options for refining search criteria. There is also a feature on the website that saves recent searches without additional steps from the user.

Collection: 276,019,066 documents; 9,286 content providers

Advanced Search Options:  Author, subject, year, content provider, language, document type, access, terms of reuse

Research Databases

10. Digital Library of the Commons Repository

Run by Indiana University, the Digital Library of the Commons (DLC) Repository is a multidisciplinary journal repository that allows users to access thousands of free and OA articles from around the world. You can browse by document type, date, author, title, and more or search for keywords relevant to your topic.

DCL also offers the Comprehensive Bibliography of the Commons, an image database, and a keyword thesaurus for enhanced search parameters. The repository includes books, book chapters, conference papers, journal articles, surveys, theses and dissertations, and working papers. DCL advanced search features drop-down menus of search types with built-in Boolean search options.

Searches can be sorted by relevance, title, date, or submission date in ascending or descending order. Abstracts are included in selected search results, with access to full texts available, and citations can be exported from the same page. Additionally, the image database search includes tips for better search results.

Collection: 10,784

Advanced Search Options:  Author, date, title, subject, sector, region, conference

11. CIA World Factbook

The CIA World Factbook is a little different from the other resources on this list in that it is not an online journal directory or repository. It is, however, a useful free online research database for academics in a variety of disciplines.

All the information is free to access, and it provides facts about every country in the world, which are organized by category and include information about history, geography, transportation, and much more. The World Factbook can be searched by country or region, and there is also information about the world’s oceans.

This site contains resources related to the CIA as an organization rather than being a scientific journal database specifically. The site has a user interface that is easy to navigate. The site also provides a section for updates regarding changes to what information is available and how it is organized, making it easier to interact with the information you are searching for.

Collection: 266 countries

12. Paperity

Paperity boasts its status as the "first multidisciplinary aggregator of OA journals and papers." Their focus is on helping you avoid paywalls while connecting you to authoritative research. In addition to providing readers with easy access to thousands of journals, Paperity seeks to help authors reach their audiences and help journals increase their exposure to boost readership.

Paperity has journal articles for every discipline, and the database offers more than a dozen advanced search options, including the length of the paper and the number of authors. There is even an option to include, exclude, or exclusively search gray papers.

Paperity is available for mobile, with both a mobile site and the Paperity Reader, an app that is available for both Android and Apple users. The database is also available on social media. You can interact with Paperity via Twitter and Facebook, and links to their social media are available on their homepage, including their Twitter feed.

Collection: 8,837,396

Advanced Search Options: Title, abstract, journal title, journal ISSN, publisher, year of publication, number of characters, number of authors, DOI, author, affiliation, language, country, region, continent, gray papers

13. dblp Computer Science Bibliography

The dblp Computer Science Bibliography is an online index of major computer science publications. dblp was founded in 1993, though until 2010 it was a university-specific database at the University of Trier in Germany. It is currently maintained by the Schloss Dagstuhl – Leibniz Center for Informatics.

Although it provides access to both OA articles and those behind a paywall, you can limit your search to only OA articles. The site indexes more than three million publications, making it an invaluable resource in the world of computer science. dblp entries are color-coded based on the type of item.

dblp has an extensive FAQ section, so questions that might arise about topics like the database itself, navigating the website, or the data on dblp, in addition to several other topics, are likely to be answered. The website also hosts a blog and has a section devoted to website statistics.

Collection: 5,884,702

14. EconBiz

EconBiz is a great resource for economic and business studies. A service of the Leibniz Information Centre for Economics, it offers access to full texts online, with the option of searching for OA material only. Their literature search is performed across multiple international databases.

EconBiz has an incredibly useful research skills section, with resources such as Guided Walk, a service to help students and researchers navigate searches, evaluate sources, and correctly cite references; the Research Guide EconDesk, a help desk to answer specific questions and provide advice to aid in literature searches; and the Academic Career Kit for what they refer to as Early Career Researchers.

Other helpful resources include personal literature lists, a calendar of events for relevant calls for papers, conferences, and workshops, and an economics terminology thesaurus to help in finding keywords for searches. To stay up-to-date with EconBiz, you can sign up for their newsletter.

Collection: 1,075,219

Advanced Search Options:  Title, subject, author, institution, ISBN/ISSN, journal, publisher, language, OA only

15. BioMed Central

BioMed Central provides OA research from more than 300 peer-reviewed journals. While originally focused on resources related to the physical sciences, math, and engineering, BioMed Central has branched out to include journals that cover a broader range of disciplines, with the aim of providing a single platform that provides OA articles for a variety of research needs. You can browse these journals by subject or title, or you can search all articles for your required keyword.

BioMed Central has a commitment to peer-reviewed sources and to the peer review process itself, continually seeking to help and improve the peer review process. They're "committed to maintaining high standards through full and stringent peer review." They publish the journal Research Integrity and Peer Review , which publishes research on the subject.

Additionally, the website includes resources to assist and support editors as part of their commitment to providing high-quality, peer-reviewed OA articles.

Collection: 507,212

Other Services: BMC administers the International Standard Randomised Controlled Trial Number (ISRCTN) registry. While initially designed for registering clinical trials, since its creation in 2000, the registry has broadened its scope to include other health studies as well.

The registry is recognized by the International Committee of Medical Journal Editors, as well as the World Health Organization (WHO), and it meets the requirements established by the WHO International Clinical Trials Registry Platform.

The study records included in the registry are all searchable and free to access. The ISRCTN registry "supports transparency in clinical research, helps reduce selective reporting of results and ensures an unbiased and complete evidence base."

Advanced Search Options:  Author, title, journal, list

A multidisciplinary search engine, JURN provides links to various scholarly websites, articles, and journals that are free to access or OA. Covering the fields of the arts, humanities, business, law, nature, science, and medicine, JURN has indexed almost 5,000 repositories to help you find exactly what you're looking for.

Search features are enhanced by Google, but searches are filtered through their index of repositories. JURN seeks to reach a wide audience, with their search engine tailored to researchers from "university lecturers and students seeking a strong search tool for OA content" and "advanced and ambitious students, age 14-18" to "amateur historians and biographers" and "unemployed and retired lecturers."

That being said, JURN is very upfront about its limitations. They admit to not being a good resource for educational studies, social studies, or psychology, and conference archives are generally not included due to frequently unstable URLs.

Collection: 5,064 indexed journals

Other Services: JURN has a browser add-on called UserScript. This add-on allows users to integrate the JURN database directly into Google Search. When performing a search through Google, the add-on creates a link that sends the search directly to JURN CSE. JURN CSE is a search service that is hosted by Google.

Clicking the link from the Google Search bar will run your search through the JURN database from the Google homepage. There is also an interface for a DuckDuckGo search box; while this search engine has an emphasis on user privacy, for smaller sites that may be indexed by JURN, DuckDuckGo may not provide the same depth of results.

Advanced Search Options:  Google search modifiers

Dryad is a digital repository of curated, OA scientific research data. Launched in 2009, it is run by a not-for-profit membership organization, with a community of institutional and publisher members for whom their services have been designed. Members include institutions such as Stanford, UCLA, and Yale, as well as publishers like Oxford University Press and Wiley.

Dryad aims to "promote a world where research data is openly available, integrated with the scholarly literature, and routinely reused to create knowledge." It is free to access for the search and discovery of data. Their user experience is geared toward easy self-depositing, supports Creative Commons licensing, and provides DOIs for all their content.

Note that there is a publishing charge associated if you wish to publish your data in Dryad. When searching datasets, they are accompanied by author information and abstracts for the associated studies, and citation information is provided for easy attribution.

Collection: 44,458

Advanced Search Options: No

Run by the British Library, the E-Theses Online Service (EThOS) allows you to search over 500,000 doctoral theses in a variety of disciplines. All of the doctoral theses available on EThOS have been awarded by higher education institutions in the United Kingdom.

Although some full texts are behind paywalls, you can limit your search to items available for immediate download, either directly through EThOS or through an institution's website. More than half of the records in the database provide access to full-text theses.

EThOS notes that they do not hold all records for all institutions, but they strive to index as many doctoral theses as possible, and the database is constantly expanding, with approximately 3,000 new records added and 2,000 new full-text theses available every month. The availability of full-text theses is dependent on multiple factors, including their availability in the institutional repository and the level of repository development.

Collection: 500,000+

Advanced Search Options:  Abstract, author's first name, author's last name, awarding body, current institution, EThOS ID, year, language, qualifications, research supervisor, sponsor/funder, keyword, title

PubMed is a research platform well-known in the fields of science and medicine. It was created and developed by the National Center for Biotechnology Information (NCBI) at the National Library of Medicine (NLM). It has been available since 1996 and offers access to "more than 33 million citations for biomedical literature from MEDLINE, life science journals, and online books."

While PubMed does not provide full-text articles directly, and many full-text articles may be behind paywalls or require subscriptions to access them, when articles are available from free sources, such as through PubMed Central (PMC), those links are provided with the citations and abstracts that PubMed does provide.

PMC, which was established in 2000 by the NLM, is a free full-text archive that includes more than 6,000,000 records. PubMed records link directly to corresponding PMC results. PMC content is provided by publishers and other content owners, digitization projects, and authors directly.

Collection: 33,000,000+

Advanced Search Options: Author's first name, author's last name, identifier, corporation, date completed, date created, date entered, date modified, date published, MeSH, book, conflict of interest statement, EC/RN number, editor, filter, grant number, page number, pharmacological action, volume, publication type, publisher, secondary source ID, text, title, abstract, transliterated title

20. Semantic Scholar

A unique and easy-to-use resource, Semantic Scholar defines itself not just as a research database but also as a "search and discovery tool." Semantic Scholar harnesses the power of artificial intelligence to efficiently sort through millions of science-related papers based on your search terms.

Through this singular application of machine learning, Semantic Scholar expands search results to include topic overviews based on your search terms, with the option to create an alert for or further explore the topic. It also provides links to related topics.

In addition, search results produce "TLDR" summaries in order to provide concise overviews of articles and enhance your research by helping you to navigate quickly and easily through the available literature to find the most relevant information. According to the site, although some articles are behind paywalls, "the data [they] have for those articles is limited," so you can expect to receive mostly full-text results.

Collection: 203,379,033

Other Services: Semantic Scholar supports multiple popular browsers. Content can be accessed through both mobile and desktop versions of Firefox, Microsoft Edge, Google Chrome, Apple Safari, and Opera.

Additionally, Semantic Scholar provides browser extensions for both Chrome and Firefox, so AI-powered scholarly search results are never more than a click away. The mobile interface includes an option for Semantic Swipe, a new way of interacting with your research results.

There are also beta features that can be accessed as part of the Beta Program, which will provide you with features that are being actively developed and require user feedback for further improvement.

Advanced Search Options: Field of study, date range, publication type, author, journal, conference, PDF

Zenodo, powered by the European Organization for Nuclear Research (CERN), was launched in 2013. Taking its name from Zenodotus, the first librarian of the ancient library of Alexandria, Zenodo is a tool "built and developed by researchers, to ensure that everyone can join in open science." Zenodo accepts all research from every discipline in any file format.

However, Zenodo also curates uploads and promotes peer-reviewed material that is available through OA. A DOI is assigned to everything that is uploaded to Zenodo, making research easily findable and citable. You can sort by keyword, title, journal, and more and download OA documents directly from the site.

While there are closed access and restricted access items in the database, the vast majority of research is OA material. Search results can be filtered by access type, making it easy to view the free articles available in the database.

Collection: 2,220,000+

Advanced Search Options:  Access, file type, keywords

Check out our roundup of free research databases as a handy one-page PDF.

How to find peer-reviewed articles.

There are a lot of free scholarly articles available from various sources. The internet is a big place. So how do you go about finding peer-reviewed articles when conducting your research? It's important to make sure you are using reputable sources.

The first source of the article is the person or people who wrote it. Checking out the author can give you some initial insight into how much you can trust what you’re reading. Looking into the publication information of your sources can also indicate whether the article is reliable.

Aspects of the article, such as subject and audience, tone, and format, are other things you can look at when evaluating whether the article you're using is valid, reputable, peer-reviewed material. So, let's break that down into various components so you can assess your research to ensure that you're using quality articles and conducting solid research.

Check the Author

Peer-reviewed articles are written by experts or scholars with experience in the field or discipline they're writing about. The research in a peer-reviewed article has to pass a rigorous evaluation process, so it’s a foregone conclusion that the author(s) of a peer-reviewed article should have experience or training related to that research.

When evaluating an article, take a look at the author’s information. What credentials does the author have to indicate that their research has scholarly weight behind it? Finding out what type of degree the author has—and what that degree is in—can provide insight into what kind of authority the author is on the subject.

Something else that might lend credence to the author’s scholarly role is their professional affiliation. A look at what organization or institution they are affiliated with can tell you a lot about their experience or expertise. Where were they trained, and who is verifying their research?

Identify Subject and Audience

The ultimate goal of a study is to answer a question. Scholarly articles are also written for scholarly audiences, especially articles that have gone through the peer review process. This means that the author is trying to reach experts, researchers, academics, and students in the field or topic the research is based on.

Think about the question the author is trying to answer by conducting this research, why, and for whom. What is the subject of the article? What question has it set out to answer? What is the purpose of finding the information? Is the purpose of the article of importance to other scholars? Is it original content?

Research should also be approached analytically. Is the methodology sound? Is the author using an analytical approach to evaluate the data that they have obtained? Are the conclusions they've reached substantiated by their data and analysis? Answering these questions can reveal a lot about the article’s validity.

Format Matters

Reliable articles from peer-reviewed sources have certain format elements to be aware of. The first is an abstract. An abstract is a short summary or overview of the article. Does the article have an abstract? It's unlikely that you're reading a peer-reviewed article if it doesn’t. Peer-reviewed journals will also have a word count range. If an article seems far too short or incredibly long, that may be reason to doubt it.

Another feature of reliable articles is the sections the information is divided into. Peer-reviewed research articles will have clear, concise sections that appropriately organize the information. This might include a literature review, methodology, and results in the case of research articles and a conclusion.

One of the most important sections is the references or bibliography. This is where the researcher lists all the sources of their information. A peer-reviewed source will have a comprehensive reference section.

An article that has been written to reach an academic community will have an academic tone. The language that is used, and the way this language is used, is important to consider. If the article is riddled with grammatical errors, confusing syntax, and casual language, it almost definitely didn't make it through the peer review process.

Also consider the use of terminology. Every discipline is going to have standard terminology or jargon that can be used and understood by other academics in the discipline. The language in a peer-reviewed article is going to reflect that.

If the author is going out of their way to explain simple terms, or terms that are standard to the field or discipline, it's unlikely that the article has been peer reviewed, as this is something that the author would be asked to address during the review process.

Publication

The source of the article will be a very good indicator of the likelihood that it was peer reviewed. Where was the article published? Was it published alongside other academic articles in the same discipline? Is it a legitimate and reputable scholarly publication?

A trade publication or newspaper might be legitimate or reputable, but it is not a scholarly source, and it will not have been subject to the peer review process. Scholarly journals are the best resource for peer-reviewed articles, but it's important to remember that not all scholarly journals are peer reviewed.

It’s helpful to look at a scholarly source’s website, as peer-reviewed journals will have a clear indication of the peer review process. University libraries, institutional repositories, and reliable databases (and you now might have a list of some legit ones) can also help provide insight into whether an article comes from a peer-reviewed journal.

Free Online Journal

Common Research Mistakes to Avoid

Research is a lot of work. Even with high standards and good intentions, it’s easy to make mistakes. Perhaps you searched for access to scientific journals for free and found the perfect peer-reviewed sources, but you forgot to document everything, and your references are a mess. Or, you only searched for free online articles and missed out on a ground-breaking study that was behind a paywall.

Whether your research is for a degree or to get published or to satisfy your own inquisitive nature, or all of the above, you want all that work to produce quality results. You want your research to be thorough and accurate.

To have any hope of contributing to the literature on your research topic, your results need to be high quality. You might not be able to avoid every potential mistake, but here are some that are both common and easy to avoid.

Sticking to One Source

One of the hallmarks of good research is a healthy reference section. Using a variety of sources gives you a better answer to your question. Even if all of the literature is in agreement, looking at various aspects of the topic may provide you with an entirely different picture than you would have if you looked at your research question from only one angle.

Not Documenting Every Fact

As you conduct your research, do yourself a favor and write everything down. Everything you include in your paper or article that you got from another source is going to need to be added to your references and cited.

It's important, especially if your aim is to conduct ethical, high-quality research, that all of your research has proper attribution. If you don't document as you go, you could end up making a lot of work for yourself if the information you don’t write down is something that later, as you write your paper, you really need.

Using Outdated Materials

Academia is an ever-changing landscape. What was true in your academic discipline or area of research ten years ago may have since been disproven. If fifteen studies have come out since the article that you're using was published, it's more than a little likely that you're going to be basing your research on flawed or dated information.

If the information you're basing your research on isn’t as up-to-date as possible, your research won't be of quality or able to stand up to any amount of scrutiny. You don’t want all of your hard work to be for naught.

Relying Solely on Open Access Journals

OA is a great resource for conducting academic research. There are high-quality journal articles available through OA, and that can be very helpful for your research. But, just because you have access to free articles, that doesn't mean that there's nothing to be found behind a paywall.

Just as dismissing high-quality peer-reviewed articles because they are OA would be limiting, not exploring any paid content at all is equally short-sighted. If you're seeking to conduct thorough and comprehensive research, exploring all of your options for quality sources is going to be to your benefit.

Digging Too Deep or Not Deep Enough

Research is an art form, and it involves a delicate balance of information. If you conduct your research using only broad search terms, you won't be able to answer your research question well, or you'll find that your research provides information that is closely related to your topic but, ultimately, your findings are vague and unsubstantiated.

On the other hand, if you delve deeply into your research topic with specific searches and turn up too many sources, you might have a lot of information that is adjacent to your topic but without focus and perhaps not entirely relevant. It's important to answer your research question concisely but thoroughly.

Different Types of Scholarly Articles

Different types of scholarly articles have different purposes. An original research article, also called an empirical article, is the product of a study or an experiment. This type of article seeks to answer a question or fill a gap in the existing literature.

Research articles will have a methodology, results, and a discussion of the findings of the experiment or research and typically a conclusion.

Review articles overview the current literature and research and provide a summary of what the existing research indicates or has concluded. This type of study will have a section for the literature review, as well as a discussion of the findings of that review. Review articles will have a particularly extensive reference or bibliography section.

Theoretical articles draw on existing literature to create new theories or conclusions, or look at current theories from a different perspective, to contribute to the foundational knowledge of the field of study.

10 Tips for Navigating Journal Databases

Use the right academic journal database for your search, be that interdisciplinary or specific to your field. Or both!

If it’s an option, set the search results to return only peer-reviewed sources.

Start by using search terms that are relevant to your topic without being overly specific.

Try synonyms, especially if your keywords aren’t returning the desired results.

Scholarly Journal Articles

Even if you’ve found some good articles, try searching using different terms.

Explore the advanced search features of the database(s).

Learn to use Booleans (AND, OR, NOT) to expand or narrow your results.

Once you’ve gotten some good results from a more general search, try narrowing your search.

Read through abstracts when trying to find articles relevant to your research.

Keep track of your research and use citation tools. It’ll make life easier when it comes time to compile your references.

7 Frequently Asked Questions

1. how do i get articles for free.

Free articles can be found through free online academic journals, OA databases, or other databases that include OA journals and articles. These resources allow you to access free papers online so you can conduct your research without getting stuck behind a paywall.

Academics don’t receive payment for the articles they contribute to journals. There are often, in fact, publication fees that scholars pay in order to publish. This is one of the funding structures that allows OA journals to provide free content so that you don’t have to pay fees or subscription costs to access journal articles.

2. How Do I Find Journal Articles?

Journal articles can be found in databases and institutional repositories that can be accessed at university libraries. However, online research databases that contain OA articles are the best resource for getting free access to journal articles that are available online.

Peer-reviewed journal articles are the best to use for academic research, and there are a number of databases where you can find peer-reviewed OA journal articles. Once you've found a useful article, you can look through the references for the articles the author used to conduct their research, and you can then search online databases for those articles, too.

3. How Do I Find Peer-Reviewed Articles?

Peer-reviewed articles can be found in reputable scholarly peer-reviewed journals. High-quality journals and journal articles can be found online using academic search engines and free research databases. These resources are excellent for finding OA articles, including peer-reviewed articles.

OA articles are articles that can be accessed for free. While some scholarly search engines and databases include articles that aren't peer reviewed, there are also some that provide only peer-reviewed articles, and databases that include non-peer-reviewed articles often have advanced search features that enable you to select “peer review only.” The database will return results that are exclusively peer-reviewed content.

4. What Are Research Databases?

A research database is a list of journals, articles, datasets, and/or abstracts that allows you to easily search for scholarly and academic resources and conduct research online. There are databases that are interdisciplinary and cover a variety of topics.

For example, Paperity might be a great resource for a chemist as well as a linguist, and there are databases that are more specific to a certain field. So, while ERIC might be one of the best educational databases available for OA content, it's not going to be one of the best databases for finding research in the field of microbiology.

5. How Do I Find Scholarly Articles for Specific Fields?

There are interdisciplinary research databases that provide articles in a variety of fields, as well as research databases that provide articles that cater to specific disciplines. Additionally, a journal repository or index can be a helpful resource for finding articles in a specific field.

When searching an interdisciplinary database, there are frequently advanced search features that allow you to narrow the search results down so that they are specific to your field. Selecting “psychology” in the advanced search features will return psychology journal articles in your search results. You can also try databases that are specific to your field.

If you're searching for law journal articles, many law reviews are OA. If you don’t know of any databases specific to history, visiting a journal repository or index and searching “history academic journals” can return a list of journals specific to history and provide you with a place to begin your research.

6. Are Peer-Reviewed Articles Really More Legitimate?

The short answer is yes, peer-reviewed articles are more legitimate resources for academic research. The peer review process provides legitimacy, as it is a rigorous review of the content of an article that is performed by scholars and academics who are experts in their field of study. The review provides an evaluation of the quality and credibility of the article.

Non-peer-reviewed articles are not subject to a review process and do not undergo the same level of scrutiny. This means that non-peer-reviewed articles are unlikely, or at least not as likely, to meet the same standards that peer-reviewed articles do.

7. Are Free Article Directories Legitimate?

Yes! As with anything, some databases are going to be better for certain requirements than others. But, a scholarly article database being free is not a reason in itself to question its legitimacy.

Free scholarly article databases can provide access to abstracts, scholarly article websites, journal repositories, and high-quality peer-reviewed journal articles. The internet has a lot of information, and it's often challenging to figure out what information is reliable. 

Research databases and article directories are great resources to help you conduct your research. Our list of the best research paper websites is sure to provide you with sources that are totally legit.

Get Professional Academic Editing

Hire an expert academic editor , or get a free sample, about the author.

Scribendi Editing and Proofreading

Scribendi's in-house editors work with writers from all over the globe to perfect their writing. They know that no piece of writing is complete without a professional edit, and they love to see a good piece of writing transformed into a great one. Scribendi's in-house editors are unrivaled in both experience and education, having collectively edited millions of words and obtained numerous degrees. They love consuming caffeinated beverages, reading books of various genres, and relaxing in quiet, dimly lit spaces.

Have You Read?

"The Complete Beginner's Guide to Academic Writing"

Related Posts

How to Write a Research Proposal

How to Write a Research Proposal

How to Write a Scientific Paper

How to Write a Scientific Paper

How to Write a Thesis or Dissertation

How to Write a Thesis or Dissertation

Upload your file(s) so we can calculate your word count, or enter your word count manually.

We will also recommend a service based on the file(s) you upload.

English is not my first language. I need English editing and proofreading so that I sound like a native speaker.

I need to have my journal article, dissertation, or term paper edited and proofread, or I need help with an admissions essay or proposal.

I have a novel, manuscript, play, or ebook. I need editing, copy editing, proofreading, a critique of my work, or a query package.

I need editing and proofreading for my white papers, reports, manuals, press releases, marketing materials, and other business documents.

I need to have my essay, project, assignment, or term paper edited and proofread.

I want to sound professional and to get hired. I have a resume, letter, email, or personal document that I need to have edited and proofread.

 Prices include your personal % discount.

 Prices include % sales tax ( ).

journal website for research paper

  • Search Menu
  • Browse content in Arts and Humanities
  • Browse content in Archaeology
  • Prehistoric Archaeology
  • Browse content in Art
  • History of Art
  • Browse content in Classical Studies
  • Classical Literature
  • Classical Reception
  • Classical History
  • Greek and Roman Archaeology
  • Digital Humanities
  • Browse content in History
  • Diplomatic History
  • Environmental History
  • Genocide and Ethnic Cleansing
  • History by Period
  • Legal and Constitutional History
  • Regional and National History
  • Social and Cultural History
  • Theory, Methods, and Historiography
  • World History
  • Browse content in Language Teaching and Learning
  • Language Teaching Theory and Methods
  • Browse content in Linguistics
  • Applied Linguistics
  • Language Evolution
  • Language Families
  • Lexicography
  • Browse content in Literature
  • Bibliography
  • Literary Studies (American)
  • Literary Studies (20th Century onwards)
  • Literary Studies (British and Irish)
  • Literary Studies (Women's Writing)
  • Literary Theory and Cultural Studies
  • Shakespeare Studies and Criticism
  • Browse content in Media Studies
  • Browse content in Music
  • Applied Music
  • Medicine and Music
  • Music Theory and Analysis
  • Musical Structures, Styles, and Techniques
  • Musicology and Music History
  • Browse content in Philosophy
  • Aesthetics and Philosophy of Art
  • Epistemology
  • History of Western Philosophy
  • Metaphysics
  • Moral Philosophy
  • Philosophy of Mind
  • Philosophy of Science
  • Philosophy of Mathematics and Logic
  • Practical Ethics
  • Browse content in Religion
  • Christianity
  • Judaism and Jewish Studies
  • Religion and Science
  • Religion and Law
  • Religion and Art, Literature, and Music
  • Religious Studies
  • Browse content in Society and Culture
  • Ethical Issues and Debates
  • Browse content in Law
  • Arbitration
  • Company and Commercial Law
  • Comparative Law
  • Competition Law
  • Browse content in Constitutional and Administrative Law
  • Parliamentary and Legislative Practice
  • Employment and Labour Law
  • Environment and Energy Law
  • Financial Law
  • History of Law
  • Human Rights and Immigration
  • Intellectual Property Law
  • Browse content in International Law
  • Private International Law and Conflict of Laws
  • Public International Law
  • IT and Communications Law
  • Jurisprudence and Philosophy of Law
  • Law and Society
  • Legal System and Practice
  • Medical and Healthcare Law
  • Browse content in Medicine and Health
  • Browse content in Allied Health Professions
  • Dietetics and Nutrition
  • Physiotherapy
  • Radiography
  • Anaesthetics
  • Clinical Neuroscience
  • Browse content in Clinical Medicine
  • Acute Medicine
  • Cardiovascular Medicine
  • Clinical Pharmacology and Therapeutics
  • Dermatology
  • Endocrinology and Diabetes
  • Gastroenterology
  • Geriatric Medicine
  • Infectious Diseases
  • Medical Toxicology
  • Medical Oncology
  • Rheumatology
  • Sleep Medicine
  • Community Medical Services
  • Critical Care
  • Forensic Medicine
  • History of Medicine
  • Medical Skills
  • Medical Ethics
  • Browse content in Medical Dentistry
  • Restorative Dentistry and Orthodontics
  • Medical Statistics and Methodology
  • Browse content in Neurology
  • Neuropathology
  • Nursing Studies
  • Browse content in Obstetrics and Gynaecology
  • Gynaecology
  • Occupational Medicine
  • Paediatrics
  • Browse content in Pathology
  • Clinical Cytogenetics and Molecular Genetics
  • Medical Microbiology and Virology
  • Patient Education and Information
  • Browse content in Pharmacology
  • Psychopharmacology
  • Browse content in Preclinical Medicine
  • Molecular Biology and Genetics
  • Reproduction, Growth and Development
  • Primary Care
  • Professional Development in Medicine
  • Browse content in Psychiatry
  • Child and Adolescent Psychiatry
  • Forensic Psychiatry
  • Browse content in Public Health and Epidemiology
  • Epidemiology
  • Public Health
  • Browse content in Radiology
  • Clinical Radiology
  • Interventional Radiology
  • Radiation Oncology
  • Reproductive Medicine
  • Browse content in Surgery
  • Cardiothoracic Surgery
  • Gastro-intestinal and Colorectal Surgery
  • Neurosurgery
  • Plastic and Reconstructive Surgery
  • Trauma and Orthopaedic Surgery
  • Browse content in Science and Mathematics
  • Browse content in Biological Sciences
  • Aquatic Biology
  • Biochemistry
  • Bioinformatics and Computational Biology
  • Developmental Biology
  • Ecology and Conservation
  • Evolutionary Biology
  • Genetics and Genomics
  • Microbiology
  • Molecular and Cell Biology
  • Plant Sciences and Forestry
  • Research Methods in Life Sciences
  • Structural Biology
  • Systems Biology
  • Zoology and Animal Sciences
  • Browse content in Chemistry
  • Medicinal Chemistry
  • Mineralogy and Gems
  • Physical Chemistry
  • Browse content in Computer Science
  • Artificial Intelligence
  • Computer Architecture and Logic Design
  • Human-Computer Interaction
  • Mathematical Theory of Computation
  • Browse content in Computing
  • Computer Security
  • Computer Networking and Communications
  • Browse content in Earth Sciences and Geography
  • Atmospheric Sciences
  • Environmental Geography
  • Geology and the Lithosphere
  • Meteorology and Climatology
  • Browse content in Engineering and Technology
  • Agriculture and Farming
  • Biological Engineering
  • Civil Engineering, Surveying, and Building
  • Energy Technology
  • Engineering (General)
  • Environmental Science, Engineering, and Technology
  • Transport Technology and Trades
  • Browse content in Environmental Science
  • Environmental Sustainability
  • Management of Land and Natural Resources (Environmental Science)
  • Browse content in Materials Science
  • Ceramics and Glasses
  • Composite Materials
  • Nanotechnology
  • Browse content in Mathematics
  • Applied Mathematics
  • Biomathematics and Statistics
  • Mathematical Education
  • Mathematical Analysis
  • Probability and Statistics
  • Pure Mathematics
  • Browse content in Neuroscience
  • Cognition and Behavioural Neuroscience
  • Neuroscientific Techniques
  • Browse content in Physics
  • Astronomy and Astrophysics
  • Classical Mechanics
  • Relativity and Gravitation
  • Browse content in Psychology
  • Clinical Psychology
  • Cognitive Psychology
  • Cognitive Neuroscience
  • Health Psychology
  • Music Psychology
  • Neuropsychology
  • Organizational Psychology
  • Browse content in Social Sciences
  • Browse content in Anthropology
  • Human Evolution
  • Browse content in Business and Management
  • Human Resource Management
  • Industrial and Employment Relations
  • Industry Studies
  • Information and Communication Technologies
  • Organizational Theory and Behaviour
  • Public and Nonprofit Management
  • Browse content in Criminology and Criminal Justice
  • Criminology
  • Browse content in Economics
  • Agricultural, Environmental, and Natural Resource Economics
  • Behavioural Economics and Neuroeconomics
  • Econometrics and Mathematical Economics
  • Economic History
  • Economic Development and Growth
  • Financial Markets
  • Financial Institutions and Services
  • Health, Education, and Welfare
  • Labour and Demographic Economics
  • Law and Economics
  • Public Economics
  • Urban, Rural, and Regional Economics
  • Browse content in Education
  • Schools Studies
  • Teaching of Specific Groups and Special Educational Needs
  • Environment
  • Browse content in Human Geography
  • Economic Geography
  • Browse content in Interdisciplinary Studies
  • Communication Studies
  • Museums, Libraries, and Information Sciences
  • Browse content in Politics
  • Foreign Policy
  • Gender and Politics
  • International Relations
  • International Organization (Politics)
  • Political Behaviour
  • Political Economy
  • Political Institutions
  • Political Theory
  • Political Sociology
  • Public Policy
  • Public Administration
  • Quantitative Political Methodology
  • Regional Political Studies
  • Security Studies
  • Browse content in Regional and Area Studies
  • African Studies
  • Japanese Studies
  • Research and Information
  • Browse content in Social Work
  • Addictions and Substance Misuse
  • Browse content in Sociology
  • Economic Sociology
  • Gender and Sexuality
  • Gerontology and Ageing
  • Health, Illness, and Medicine
  • Migration Studies
  • Race and Ethnicity
  • Social Movements and Social Change
  • Social Research and Statistics
  • Social Stratification, Inequality, and Mobility
  • Sociology of Religion
  • Urban and Rural Studies
  • Journals A to Z
  • Books on Oxford Academic

Research with impact

The home of 500 peer-reviewed journals published by Oxford University Press and learned societies from around the world.

journal website for research paper

  • Open access

Our open access publishing is rigorously peer-reviewed and upholds the highest standards of publication ethics and integrity.

Learn more about our approach to open access

journal website for research paper

Publishing advice and guidance

Discover tips and advice about academic writing, and things to consider when preparing to publish a journal article.

Prepare your manuscript for publishing

journal website for research paper

Read and Publish deals

Authors interested in publishing in an OUP journal may be able to publish using funds available through their institution’s agreement with OUP.

Find out if your institution is participating

journal website for research paper

Women in Science

Join us in recognizing and celebrating the contributions and achievements of women in science.

Read a selection of journal articles

Information

  • About Oxford Academic
  • What we publish
  • Institutional account management
  • Get help with access
  • Open research
  • Using the content
  • Legal and policy
  • Advertising
  • Media enquiries

New to Oxford Academic in 2024

Cover image of current issue from Art History

Latest in Arts and Humanities

law image

Latest in Law

stethoscope image

Latest in Medicine and Health

science and math image

Latest in Science and Mathematics

social science image

Latest in Social Sciences

  • Mailing List

Affiliations

  • Copyright © 2024
  • Publish journals with us
  • University press partners
  • New features  
  • Rights and permissions
  • Accessibility
  • Oxford University Press
  • Oxford Languages
  • University of Oxford

Oxford University Press is a department of the University of Oxford. It furthers the University's objective of excellence in research, scholarship, and education by publishing worldwide

  • Copyright © 2024 Oxford University Press
  • Cookie settings
  • Cookie policy
  • Privacy policy
  • Legal notice

This Feature Is Available To Subscribers Only

Sign In or Create an Account

This PDF is available to Subscribers Only

For full access to this pdf, sign in to an existing account, or purchase an annual subscription.

U.S. flag

An official website of the United States government

The .gov means it’s official. Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

The site is secure. The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

  • Publications
  • Account settings

Preview improvements coming to the PMC website in October 2024. Learn More or Try it out now .

PubMed Central (PMC) Home Page

PubMed Central ® (PMC) is a free full-text archive of biomedical and life sciences journal literature at the U.S. National Institutes of Health's National Library of Medicine (NIH/NLM)

Discover a digital archive of scholarly articles, spanning centuries of scientific research.

Learn how to find and read articles of interest to you.

Collections

Browse the PMC Journal List or learn about some of PMC's unique collections.

For Authors

Navigate the PMC submission methods to comply with a funder mandate, expand access, and ensure preservation.

For Publishers

Learn about deposit options for journals and publishers and the PMC selection process.

For Developers

Find tools for bulk download, text mining, and other machine analysis.

9.8 MILLION articles are archived in PMC.

Content provided in part by:, full participation journals.

Journals deposit the complete contents of each issue or volume.

NIH Portfolio Journals

Journals deposit all NIH-funded articles as defined by the NIH Public Access Policy.

Selective Deposit Programs

Publisher deposits a subset of articles from a collection of journals.

March 21, 2024

Preview upcoming improvements to pmc.

We are pleased to announce the availability of a preview of improvements planned for the PMC website. These…

Dec. 15, 2023

Update on pubreader format.

The PubReader format was added to PMC in 2012 to make it easier to read full text articles on tablet, mobile, and oth…

We are pleased to announce the availability of a preview of improvements planned for the PMC website. These improvements will become the default in October 2024.

🇺🇦    make metadata, not war

A comprehensive bibliographic database of the world’s scholarly literature

The world’s largest collection of open access research papers, machine access to our vast unique full text corpus, core features, indexing the world’s repositories.

We serve the global network of repositories and journals

Comprehensive data coverage

We provide both metadata and full text access to our comprehensive collection through our APIs and Datasets

Powerful services

We create powerful services for researchers, universities, and industry

Cutting-edge solutions

We research and develop innovative data-driven and AI solutions

Committed to the POSI

Cost-free PIDs for your repository

OAI identifiers are unique identifiers minted cost-free by repositories. Ensure that your repository is correctly configured, enabling the CORE OAI Resolver to redirect your identifiers to your repository landing pages.

OAI IDs provide a cost-free option for assigning Persistent Identifiers (PIDs) to your repository records. Learn more.

Who we serve?

Enabling others to create new tools and innovate using a global comprehensive collection of research papers.

Companies

“ Our partnership with CORE will provide Turnitin with vast amounts of metadata and full texts that we can ... ” Show more

Gareth Malcolm, Content Partner Manager at Turnitin

Academic institutions.

Making research more discoverable, improving metadata quality, helping to meet and monitor open access compliance.

Academic institutions

“ CORE’s role in providing a unified search of repository content is a great tool for the researcher and ex... ” Show more

Nicola Dowson, Library Services Manager at Open University

Researchers & general public.

Tools to find, discover and explore the wealth of open access research. Free for everyone, forever.

Researchers & general public

“ With millions of research papers available across thousands of different systems, CORE provides an invalu... ” Show more

Jon Tennant, Rogue Paleontologist and Founder of the Open Science MOOC

Helping funders to analyse, audit and monitor open research and accelerate towards open science.

Funders

“ Aggregation plays an increasingly essential role in maximising the long-term benefits of open access, hel... ” Show more

Ben Johnson, Research Policy Adviser at Research England

Our services, access to raw data.

Create new and innovative solutions.

Content discovery

Find relevant research and make your research more visible.

Managing content

Manage how your research content is exposed to the world.

Companies using CORE

Gareth Malcolm

Gareth Malcolm

Content Partner Manager at Turnitin

Our partnership with CORE will provide Turnitin with vast amounts of metadata and full texts that we can utilise in our plagiarism detection software.

Academic institution using CORE

Kathleen Shearer

Executive Director of the Confederation of Open Access Repositories (COAR)

CORE has significantly assisted the academic institutions participating in our global network with their key mission, which is their scientific content exposure. In addition, CORE has helped our content administrators to showcase the real benefits of repositories via its added value services.

Partner projects

Ben Johnson

Ben Johnson

Research Policy Adviser

Aggregation plays an increasingly essential role in maximising the long-term benefits of open access, helping to turn the promise of a 'research commons' into a reality. The aggregation services that CORE provides therefore make a very valuable contribution to the evolving open access environment in the UK.

logo

Internet Archive Scholar logo (vaporwave)

A free, AI-powered research tool for scientific literature

  • Michael Atiyah
  • Moral Reasoning
  • Hedge Funds

New & Improved API for Developers

Introducing semantic reader in beta.

Stay Connected With Semantic Scholar Sign Up What Is Semantic Scholar? Semantic Scholar is a free, AI-powered research tool for scientific literature, based at the Allen Institute for AI.

Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript.

  • View all journals
  • Explore content
  • About the journal
  • Publish with us
  • Sign up for alerts

Research articles

Analyzing the changing trend of corneal biomechanical properties under different influencing factors in t2dm patients.

journal website for research paper

Outcomes of epiretinal proliferation embedding technique in the surgery for full-thickness macular hole

  • Jaehwan Choi
  • Sang Jin Kim
  • Ki Young Son

journal website for research paper

TDF and TAF inhibit liver cancer cell migration, invasion via p7TP3

journal website for research paper

Acoustic stimulation of the human round window by laser-induced nonlinear optoacoustics

  • Liza Lengert
  • Michael Tomanek
  • Hannes Maier

journal website for research paper

Malaria risk mapping among children under five in Togo

  • Gountante Kombate
  • Issouf Kone
  • Marianne A. B. van der Sande

journal website for research paper

Automating the Illumina DNA library preparation kit for whole genome sequencing applications on the flowbot ONE liquid handler robot

  • Erin Meijers
  • Fabienne B. Verhees
  • Stefan A. Boers

journal website for research paper

Predicting the effect of chemicals on fruit using graph neural networks

  • Junming Han

journal website for research paper

Using U-Net convolutional neural network to model pixel-based electrostatic potential distributions in GaN power MIS-HEMTs

  • Bang-Ren Chen
  • Yu-Sheng Hsiao

journal website for research paper

Reliability and validity of handheld structured light scanners and a static stereophotogrammetry system in facial three-dimensional surface imaging

  • J. A. M. Schipper
  • B. J. Merema

Response accuracy of ChatGPT 3.5 Copilot and Gemini in interpreting biochemical laboratory data a pilot study

  • Ahmed Naseer Kaftan
  • Majid Kadhum Hussain
  • Farah Hasson Naser

journal website for research paper

DP2 receptor activity sensor suited for antagonist screening and measurement of receptor dynamics in real-time

  • Michael Kurz
  • Michaela Ulrich
  • Moritz Bünemann

journal website for research paper

Simple and rapid determination of tartrazine in fake saffron using the metal organic framework (Fe SA MOF@CNF) by HPLC/PDA

  • Nabi Shariatifar
  • Mohammad Hozoori

journal website for research paper

An optical system to detect, surveil, and kill flying insect vectors of human and crop pathogens

  • Joseph M. Patt
  • Arty Makagon
  • Jeremy Salesin

journal website for research paper

M1 macrophages polarized by crude polysaccharides isolated from Auricularia polytricha exhibit anti-tumor effect on human breast cancer cells

  • Sunita Nilkhet
  • Kuljira Mongkolpobsin
  • Siriporn Chuchawankul

journal website for research paper

Seed dormancy, climate changes, desertification and soil use transformation threaten the Mediterranean endemic monospecific plant Petagnaea gussonei

  • Giuseppe Bonanno
  • Vincenzo Veneziano

journal website for research paper

Development and validation of burnout factors questionnaire in the operating room nurses

  • Esmaeil Teymoori
  • Armin Fereidouni
  • Armin Zareiyan

journal website for research paper

An efficient and accurate multi-level cascaded recurrent network for stereo matching

journal website for research paper

Towards accurate indel calling for oncopanel sequencing through an international pipeline competition at precisionFDA

  • Binsheng Gong
  • Samir Lababidi

journal website for research paper

Effect of an exercise-based cardiac rehabilitation program on quality of life of patients with chronic Chagas cardiomyopathy: results from the PEACH randomized clinical trial

  • Marcelo Carvalho Vieira
  • Fernanda de Souza Nogueira Sardinha Mendes
  • Mauro Felippe Felix Mediano

journal website for research paper

Evaluation of sensitivity and specificity of Kato-Katz and circulating cathodic antigen in terms of Schistosoma japonicum using latent class analysis

  • Mugyeom Moon
  • Hannah W. Wu
  • Sangshin Park

Quick links

  • Explore articles by subject
  • Guide to authors
  • Editorial policies

journal website for research paper

  • Advanced search
  • Peer review

journal website for research paper

Discover relevant research today

journal website for research paper

Advance your research field in the open

journal website for research paper

Reach new audiences and maximize your readership

ScienceOpen puts your research in the context of

Publications

For Publishers

ScienceOpen offers content hosting, context building and marketing services for publishers. See our tailored offerings

  • For academic publishers  to promote journals and interdisciplinary collections
  • For open access journals  to host journal content in an interactive environment
  • For university library publishing  to develop new open access paradigms for their scholars
  • For scholarly societies  to promote content with interactive features

For Institutions

ScienceOpen offers state-of-the-art technology and a range of solutions and services

  • For faculties and research groups  to promote and share your work
  • For research institutes  to build up your own branding for OA publications
  • For funders  to develop new open access publishing paradigms
  • For university libraries to create an independent OA publishing environment

For Researchers

Make an impact and build your research profile in the open with ScienceOpen

  • Search and discover relevant research in over 93 million Open Access articles and article records
  • Share your expertise and get credit by publicly reviewing any article
  • Publish your poster or preprint and track usage and impact with article- and author-level metrics
  • Create a topical Collection  to advance your research field

Create a Journal powered by ScienceOpen

Launching a new open access journal or an open access press? ScienceOpen now provides full end-to-end open access publishing solutions – embedded within our smart interactive discovery environment. A modular approach allows open access publishers to pick and choose among a range of services and design the platform that fits their goals and budget.

Continue reading “Create a Journal powered by ScienceOpen”   

What can a Researcher do on ScienceOpen?

ScienceOpen provides researchers with a wide range of tools to support their research – all for free. Here is a short checklist to make sure you are getting the most of the technological infrastructure and content that we have to offer. What can a researcher do on ScienceOpen? Continue reading “What can a Researcher do on ScienceOpen?”   

ScienceOpen on the Road

Upcoming events.

  • 20 – 22 February – ResearcherToReader Conferece

Past Events

  • 09 November – Webinar for the Discoverability of African Research
  • 26 – 27 October – Attending the Workshop on Open Citations and Open Scholarly Metadata
  • 18 – 22 October – ScienceOpen at Frankfurt Book Fair.
  • 27 – 29 September – Attending OA Tage, Berlin .
  • 25 – 27 September – ScienceOpen at Open Science Fair
  • 19 – 21 September – OASPA 2023 Annual Conference .
  • 22 – 24 May – ScienceOpen sponsoring Pint of Science, Berlin.
  • 16-17 May – ScienceOpen at 3rd AEUP Conference.
  • 20 – 21 April – ScienceOpen attending Scaling Small: Community-Owned Futures for Open Access Books .
  • 18 – 20 April – ScienceOpen at the London Book Fair .

What is ScienceOpen?

  • Smart search and discovery within an interactive interface
  • Researcher promotion and ORCID integration
  • Open evaluation with article reviews and Collections
  • Business model based on providing services to publishers

Live Twitter stream

Some of our partners:.

UCL Press

Physical Review Research

  • Collections
  • Editorial Team
  • Accepted Paper

Maximizing quantum-computing expressive power through randomized circuits

Phys. rev. research, yingli yang, zongkang zhang, anbang wang, xiaosi xu, xiaoting wang, and ying li.

In the noisy intermediate-scale quantum era, variational quantum algorithms (VQAs) have emerged as a promising avenue to obtain quantum advantage. However, the success of VQAs depends on the expressive power of parameterised quantum circuits, which is constrained by the limited gate number and the presence of barren plateaus. In this work, we propose and numerically demonstrate a novel approach for VQAs, utilizing randomised quantum circuits to generate the variational wavefunction. We parameterize the distribution function of these random circuits using artificial neural networks and optimize it to find the solution. This random-circuit approach presents a trade-off between maximizing the expressive power of the variational wavefunction and minimizing the associated time cost, specifically the sampling cost of quantum circuits. Given a fixed gate number, we can systematically increase the expressive power by extending the quantum-computing time. With a sufficiently large permissible time cost, the variational wavefunction can approximate any quantum state with arbitrary accuracy. Furthermore, we establish explicit relationships between expressive power, time cost, and gate number for variational quantum eigensolvers. These results highlight the promising potential of the random-circuit approach in achieving a high expressive power in quantum computing.

Sign up to receive regular email alerts from Physical Review Research

  • Forgot your username/password?
  • Create an account

Article Lookup

Paste a citation or doi, enter a citation.

This paper is in the following e-collection/theme issue:

Published on 8.4.2024 in Vol 26 (2024)

Longitudinal Monitoring of Clinician-Patient Video Visits During the Peak of the COVID-19 Pandemic: Adoption and Sustained Challenges in an Integrated Health Care Delivery System

Authors of this article:

Author Orcid Image

Original Paper

  • Jessica A Palakshappa 1, 2 , MD, MS   ; 
  • Erica R Hale 1, 2 , MS   ; 
  • Joshua D Brown 1 , PhD   ; 
  • Carol A Kittel 2 , MA   ; 
  • Emily Dressler 2 , PhD   ; 
  • Gary E Rosenthal 1, 2 , MD   ; 
  • Sarah L Cutrona 3, 4 , MD, MPH   ; 
  • Kristie L Foley 2 , MS, PhD   ; 
  • Emily R Haines 2 , PhD   ; 
  • Thomas K Houston II 1, 2 , MD, MPH  

1 Atrium Health Wake Forest Baptist, Winston Salem, NC, United States

2 Wake Forest University School of Medicine, Winston Salem, NC, United States

3 Department of Population and Quantitative Health Sciences, University of Massachusetts Chan Medical School, Worcester, MA, United States

4 Center for Healthcare Organization and Implementation Research, Veterans Affairs Bedford Healthcare System, Bedford, MA, United States

Corresponding Author:

Jessica A Palakshappa, MD, MS

Wake Forest University School of Medicine

1 Medical Center Blvd

Winston Salem, NC, 27157

United States

Phone: 1 336 716 8465

Email: [email protected]

Background: Numerous prior opinion papers, administrative electronic health record data studies, and cross-sectional surveys of telehealth during the pandemic have been published, but none have combined assessments of video visit success monitoring with longitudinal assessments of perceived challenges to the rapid adoption of video visits during the pandemic.

Objective: This study aims to quantify (1) the use of video visits (compared with in-person and telephone visits) over time during the pandemic, (2) video visit successful connection rates, and (3) changes in perceived video visit challenges.

Methods: A web-based survey was developed for the dual purpose of monitoring and improving video visit implementation in our health care system during the COVID-19 pandemic. The survey included questions regarding rates of in-person, telephone, and video visits for clinician-patient encounters; the rate of successful connection for video visits; and perceived challenges to video visits (eg, software, hardware, bandwidth, and technology literacy). The survey was distributed via email to physicians, advanced practice professionals, and clinicians in May 2020. The survey was repeated in March 2021. Differences between the 2020 and 2021 responses were adjusted for within-respondent correlation across surveys and tested using generalized estimating equations.

Results: A total of 1126 surveys were completed (511 surveys in 2020 and 615 surveys in 2021). In 2020, only 21.7% (73/336) of clinicians reported no difficulty connecting with patients during video visits and 28.6% (93/325) of clinicians reported no difficulty in 2021. The distribution of the percentage of successfully connected video visits (“Over the past two weeks of scheduled visits, what percentage did you successfully connect with patients by video?”) was not significantly different between 2020 and 2021 ( P =.74). Challenges in conducting video visits persisted over time. Poor connectivity was the most common challenge reported by clinicians. This response increased over time, with 30.5% (156/511) selecting it as a challenge in 2020 and 37.1% (228/615) in 2021 ( P =.01). Patients not having access to their electronic health record portals was also a commonly reported challenge (109/511, 21.3% in 2020 and 137/615, 22.3% in 2021, P =.73).

Conclusions: During the pandemic, our health care delivery system rapidly adopted synchronous patient-clinician communication using video visits. As experience with video visits increased, the reported failure rate did not significantly decline, and clinicians continued to report challenges related to general network connectivity and patient access to technology.

Introduction

Interest in telehealth from policy makers, health care providers, patients, and families continues to grow [ 1 ], including newer modalities such as video visits [ 2 ]. Video visits refer to clinician-patient communication that includes real time video and audio assessment of the patient when the clinician is in a different location. Video visits have the potential to improve efficiency for clinicians and to improve access for patients, particularly those who reside in rural areas or with transportation barriers [ 3 ]. The technology to support video visits has existed for decades; however, only a small minority of clinicians used this form of telehealth in their practices [ 4 ] prior to the COVID-19 pandemic. There are multiple reasons why telehealth adoption was slow despite its potential benefits including changing cost and reimbursement policies, federal and state licensing laws, incompatible electronic health records, and gaps in internet access in certain areas.

The COVID-19 pandemic and subsequent public health emergency led to fundamental shifts in how health care was delivered in the United States, including the rapid adoption of telehealth services. Before the public health emergency, approximately 13,000 fee-for-service Medicare beneficiaries received telehealth services in a week and that number increased to nearly 1.7 million beneficiaries by the last week of April 2020 [ 5 ]. While the need to avoid in-person contact fueled the initial rapid rise, regulations and restrictions were temporarily lifted during this time facilitating its use. Clinicians were also paid for telehealth services at the same rate as in-person medical services. Several studies have reported on the rapid uptake of telehealth, including video visits, in this context [ 6 - 8 ]. However, few reports have explored rates of success and failure of video visits over time. The challenges clinicians face in conducting video visits have also not been explored. Understanding these challenges will be important for improving and expanding the reach of telehealth services after the pandemic has ended.

In the context of the rapidly increasing use of telehealth to conduct video visits, and consistent with the sociotechnical model’s [ 9 ] emphasis on monitoring the implementation of health information technology in complex adaptive health care systems, our health care delivery system initiated a series of brief assessments of video visit adoption. The research objective of this report is to summarize the findings of the video visit monitoring including (1) the use of video visits (compared with in-person and telephone visits) over time during the pandemic, (2) video visit successful connection rates, and (3) changes in perceived video visit challenges. With patient and clinician skills and experience with video visits increasing over time, our primary hypothesis was that clinicians’ perceived challenges to completing video visits (eg, software, hardware, bandwidth, and technology literacy) would decline over time.

Study Design

The design was a longitudinal series of 2 cross-sectional assessments (2020 and 2021). In summary, for the dual purpose of monitoring and improving telehealth implementation in our health care delivery system, institutional leaders developed a brief web-based survey regarding the use of video visits and challenges. The survey was initially distributed in 2020. Given the ongoing public health emergency and the need to re-evaluate telehealth use, the survey was repeated in 2021. Institutional leaders encouraged clinicians to complete the survey, communicating encouragement via emails and announcements at in-person faculty and departmental meetings.

Ethical Considerations

As the brief assessments were distributed by the clinical system as part of ongoing quality improvement, the project was approved as an research protocol as exempt from human participants approval by the Wake Forest University School of Medicine Institutional Review Board (IRB00077473). The survey did not collect identifying information from the participants.

Survey Development

Published in 2010 by Sittig and Singh [ 9 ], the sociotechnical model of health information technology was the first to fully emphasize the importance of system monitoring in implementation frameworks. Key aspects of monitoring, including measuring how the technology is being used by clinicians and whether implementation outcomes are being achieved, were considered when developing the survey. The survey was developed with a literature search, expert review, and iterative pilot-testing (see Multimedia Appendix 1 ). The final survey included 12 questions related to rates of in-person, telephone, and video for clinician-patient encounters; the rate of successful connection for video visits; and perceived challenges to video visits (eg, software, hardware, bandwidth, and technology literacy).

Study Population

The study population included all outpatient clinicians practicing across the health care delivery system; we excluded clinicians without direct patient care responsibilities. The system includes 5 hospitals and over 350 primary care and specialty clinics that provide care to over 2 million persons annually. The brief assessment was distributed to clinicians in 2020 and 2021 (1937 clinicians and 2843 clinicians, respectively).

Survey Distribution and Data Collection

As we are an integrated health care delivery system, we had access to the contact details of all providers. Our group practice clinical operations executive committee facilitated the survey distribution by requesting that each department chair and clinical service line director send an email to their team of providers to notify them of the survey and encourage completion. Surveys were collected and managed using REDCap (Research Electronic Data Capture), a secure, web-based app designed to support data capture [ 10 , 11 ]. A unique survey link was distributed via email to each clinician in May 2020 and March 2021. The system sent up to 2 reminder emails if the recipient had not yet completed the survey.

Statistical Analysis

To take full advantage of the data collected, we first analyzed the results as 2 cross-sectional surveys. In this primary analysis, we included all respondents in each year. We recognize that a subset of clinicians also responded in both years. Thus, as a secondary analysis, we analyzed the data limited to the longitudinal cohort who participated in both years. First, summary statistics are presented as count (frequency) for categorical variables and mean (SD) or median (IQR) for continuous variables as appropriate. Generalized estimating equations were then used to model frequency distributions of in-person, telephone, and video visits, and patient and clinician challenges. These logit models were adjusted for within-respondent correlation across surveys via an exchangeable correlation structure. P values of .05 were considered statistically significant. P values for multiple comparisons in frequency distributions of in-person, telephone, and video visits between physicians, advanced practice professionals (APPs), and other clinicians were adjusted via the Tukey-Kramer method to control for type I errors with a corrected P value <.05 deemed statistically significant [ 12 ]. All statistical analyses were performed with R (version 4.2.1; R Core Team) [ 13 ].

We recognize that a subset of clinicians responded in both years. Thus, as a secondary analysis, we analyzed the data limited to the longitudinal cohort who participated in both surveys. For the secondary analysis, matched pairs analyses were performed as were performed in the entire sample with only those responses from clinicians that completed both surveys.

Surveillance Participation and Participant Characteristics

In 2020, 1937 surveys were sent and 511 responses were received (response rate 26.4%). In 2021, 2843 surveys were sent and 615 responses were received (response rate 21.6%). In both years, over 55% of the respondents were physicians from a wide range of clinical specialties. About half of the clinicians who completed the survey in 2020 also completed it in 2021 ( Table 1 ).

a n=511 responses in 2020 and n=615 responses in 2021.

b n=300 responses in 2020 and n=353 responses in 2021.

Health Care Delivery by In-Person and Telephone

To place the volume of telehealth in context, we first asked about the number of in-person encounters completed over the past 2 weeks ( Table 2 ). The distribution of responses differed between 2020 and 2021 ( P <.001). Modeled probabilities show fewer respondents reported zero (22.2% vs 4.9%) or 1 to 10 (33.5% vs 11.5%) in-person visits in 2021 as compared with 2020. The volume of in-person visits increased over time ( Table 2 ). Further, the majority of respondents (399/509, 78.4%) reported at least 1 telephone visit in 2020 and 65.7% (369/562) in 2021 although the distribution of responses differed from 2020 to 2021 ( P <.001).

a Differences in frequency distributions between 2020 and 2021 tested via generalized estimating equation modeling; P value adjusted using Tukey-Kramer method to control for type I errors.

Health Care Delivery by Video Visits

Many health care providers were engaged in virtual care, with 65.9% (336/510) health care providers reporting video visit encounters in 2020 and 57.6% (325/564) health care providers reporting video visit encounters in 2021 ( Table 2 ) although the distribution of responses again changed from 2020 to 2021 ( P <.001). Compared with 2020, fewer 2021 respondents reported 11-25 (18.6% vs 6.7%), 26-50 (5.9% vs 2.8%), or over 50 (2.4% vs 2%) visits.

Secondary analyses were robust to missing data and showed that the results (distributions of in-person, phone, and video visits) did not change when limiting the data to only respondents who participated in both surveys.

Comparing Health Care Delivery by Physicians, APPs, and Others

We also compared health care delivery modality by type of clinician (physicians, APPs, or others). Patterns of health care delivery reported in the overall sample were similar in the physician, APP, and other subgroups. There were no significant differences between physicians and APPs in the number of patient encounters that were completed as in-person, telephone visits, or video visits in 2020 or 2021.

Perceived Challenges to Patient-Clinician Connection Using Video Visits

The use of video visits came with challenges. In 2020, only 21.7% (73/336) of clinicians reported no difficulty connecting with patients during video visits and 28.6% (93/325) of clinicians reported no difficulty in 2021 ( Figure 1 ). The distribution of the percentage of successfully connected video visits (“Over the past two weeks of scheduled visits, what percentage did you successfully connect with patients by video?”) was not significantly different between 2020 and 2021 ( P =.74, Figure 1 ). There was also no significant difference between physicians and APPs in the rate of successful video connection with patients in either year.

Clinicians were asked about the challenges in successfully completing video visits (see Table 3 ). The most commonly reported challenge was poor connectivity. This response increased over time with 30.5% (156/511) selecting it as a challenge in 2020 and 37.1% (228/615) selecting it as a challenge in 2021 ( P =.01). Patients not having access to their electronic health record portals was also a commonly reported challenge (109/511, 21.3% in 2020 and 137/615, 22.3% in 2021; P =.73).

journal website for research paper

a P value adjusted using the Tukey-Kramer method to control for type I errors.

b For some clinical video visits, a prerequisite was that patients needed to have registered with the patient portal.

Principal Findings

Although telehealth technology was available in our health care delivery system prior to the COVID-19 pandemic, it saw only limited use for providing synchronous care to patients prior to the pandemic. Inconsistent reimbursement for services, restrictions on the physical location of patients and clinicians during telehealth, and rules about types of visits that were acceptable for telehealth services all contributed to its limited use [ 14 , 15 ]. With the pandemic, and consistent with other reports, our health care delivery system rapidly expanded the provision of clinical care by way of video visits. Later in the pandemic, in-person visits did increase, but the use of video visits remained well above prepandemic levels.

Overall, there has been a shift toward a more positive sentiment about telehealth and telemedicine since the start of the pandemic. A scoping review by Doraiswamy et al [ 16 ] reported 543 telehealth-related papers (mostly opinions, commentaries, and perspectives; 61%) published across 331 different journals from January to June 2020. Most of these new reports had a “celebratory” or favorable sentiment about the use of telehealth. The scope of the increase in telehealth during the public health emergency likely contributed to this sentiment though concerns about patient and clinician connection, the lack of physical examinations, and cost-effectiveness were still noted by some. Although our providers reported benefits for clinical video telehealth beyond audio-only calls for patient-provider visits, failure to connect using clinical video visits was common.

While reports have documented challenges with clinical video telehealth [ 17 ], few have monitored these challenges over time. During the pandemic, as our health care delivery system’s experience with video visits grew, clinicians did not report a meaningful reduction in connection failure rate. The most frequently reported challenges were general network connectivity and those related to the digital divide (eg, patient lack of internet access, needed software, or internet-connected cameras). Gaps in access to technology and the internet for telehealth may impact some patient groups more than others. For example, older age, rural residence, dual Medicare and Medicaid enrollment, and non-Hispanic Black or Hispanic race or ethnicity have been shown to be associated with a lower probability of technology ownership, access to the internet, and use of the internet for communication in cancer survivors [ 18 ]. Further, over 10% of clinicians also reported that they experienced software or hardware challenges (eg, limited availability of internet cameras at a clinical location). Expanding telehealth will require ongoing investments in technology for clinicians. New workflows to support successful connection during video visits and follow-up processes may also be needed.

Our video visit monitoring results were shared with clinical operations leadership. In response to the sustained challenges noted, we initiated a new video visit program to provide patient support prior to scheduled video visits. Our technology navigators are a specially trained, centralized team and are directed to reach out to vulnerable patients and families to facilitate video visit access. A new electronic health record dashboard identified patients with (1) a scheduled video visit and (2) 1 or more risk factors (eg, lack of a prior successful video visit and lack of patient portal access). We further prioritized patients older than 65 years and those living in rural areas. Technology navigators reached out by telephone to contact these at-risk patients to assess their technology access (eg, internet, software, webcam, or smartphone), technology literacy and perceived competence, and availability of at-home support from family and friends. The technology navigators then troubleshoot any challenges noted by the patients and offer to conduct a “practice” video visit. Evaluation of this program is ongoing. In 2022-2023, the navigators contacted 1266 patients at high risk for video visit failure. Among those contacted, 515 requested and were provided assistance. With previsit support from the navigators, the patient-provider scheduled video visit completion rate was 84% as compared with a 60% completion rate among those patients who did not receive support.

Limitations of our video visit surveillance analysis include that the data were collected across 1 health care delivery system with an integrated electronic health care record system. The perceptions and challenges may be different in a smaller health care system and in those with different health care record systems. The survey measured only clinician-reported telehealth use and success rates which may be limited by recall. As with all surveys, our results may be biased as only about one-quarter of the sample responded. It is possible that respondents experienced more challenges conducting video visits than those who did not respond. Further, not all clinicians longitudinally completed both the 2020 and 2021 surveys—due both to response rates and providers leaving and entering the health care system. Thus, changes over time may represent differences in the underlying sample. For example, new clinicians may have been more or less familiar with conducting video visits.

Conclusions

Recent reviews have noted the need for more evidence related to telehealth’s implementation, effectiveness, and health equity in telehealth access [ 16 , 19 , 20 ]. Although internet and smartphone access has increased over the last decade (with older adults being one of the fastest-growing subgroups of new adoption), our longitudinal video visit surveillance reveals that the digital divide is still a significant barrier to video visit access.

Although Healthy People 2030 (a set of national objectives to improve health and well-being) includes developmental and research objectives related to patient portals and increasing the use of telehealth to improve access to health services [ 21 ], some social determinants of health taxonomies do not include technology access. If telehealth is increasingly an important component of health care access, then technology access (eg, internet, smartphone, patient portal, and connected hardware, such as internet-connected video) should be considered a social determinant of health [ 22 ]. A comprehensive solution to overcoming the digital divide has not yet been achieved. However, some partial solutions include directly providing technology to patients, providing detailed instructions, and support services (eg, our technology navigator program), and engaging trusted caregivers (family and friends) who may be able to assist patients [ 23 - 27 ].

Acknowledgments

The project was supported through the National Cancer Institute Cancer Moonshot initiative—iDAPT: Implementation and Informatics–Developing Adaptable Processes and Technologies for Cancer Control (P50 CA244693); the Wake Forest Clinical and Translational Science Award (5UL1TR001420); and also a career development award to JAP (1K23AG073529).

Conflicts of Interest

None declared.

Brief Provider Telehealth Assessment.

  • World Health Organization. Telemedicine: Opportunities and Developments in Member States: Report on the Second Global Survey on eHealth 2009. Geneva, Switzerland. World Health Organization; 2010.
  • Moulaei K, Shanbehzadeh M, Bahaadinbeigy K, Kazemi-Arpanahi H. Survey of the patients' perspectives and preferences in adopting telepharmacy versus in-person visits to the pharmacy: a feasibility study during the COVID-19 pandemic. BMC Med Inform Decis Mak. 2022;22(1):99. [ FREE Full text ] [ CrossRef ] [ Medline ]
  • Nesbitt TS. The evolution of telehealth: where have we been and where are we going? In: Lustig TA, editor. The Role of Telehealth in an Evolving Health Care Environment: Workshop Summary. Washington, DC. National Academies Press; 2012;11-16.
  • Kane CK, Gillis K. The use of telemedicine by physicians: still the exception rather than the rule. Health Aff (Millwood). 2018;37(12):1923-1930. [ FREE Full text ] [ CrossRef ] [ Medline ]
  • Kane CK, Gillis K. The use of telemedicine by physicians: still the exception rather than the rule. Health Aff (Millwood). Dec 2018;37(12):1923-1930. [ CrossRef ] [ Medline ]
  • Weiner JP, Bandeian S, Hatef E, Lans D, Liu A, Lemke KW. In-person and telehealth ambulatory contacts and costs in a large US insured cohort before and during the COVID-19 pandemic. JAMA Netw Open. 2021;4(3):e212618. [ FREE Full text ] [ CrossRef ] [ Medline ]
  • Gilson SF, Umscheid CA, Laiteerapong N, Ossey G, Nunes KJ, Shah SD. Growth of ambulatory virtual visits and differential use by patient sociodemographics at one urban academic medical center during the COVID-19 pandemic: retrospective analysis. JMIR Med Inform. 2020;8(12):e24544. [ FREE Full text ] [ CrossRef ] [ Medline ]
  • Hatef E, Wilson RF, Hannum SM, Zhang A, Kharrazi H, Weiner JP, et al. Use of Telehealth During the COVID-19 Era. Rockville, MD. Agency for Healthcare Research and Quality; 2023.
  • Sittig DF, Singh H. A new sociotechnical model for studying health information technology in complex adaptive healthcare systems. Qual Saf Health Care. 2010;19(Suppl 3):i68-i74. [ FREE Full text ] [ CrossRef ] [ Medline ]
  • Harris PA, Taylor R, Thielke R, Payne J, Gonzalez N, Conde JG. Research electronic data capture (REDCap): a metadata-driven methodology and workflow process for providing translational research informatics support. J Biomed Inform. 2009;42(2):377-381. [ FREE Full text ] [ CrossRef ] [ Medline ]
  • Harris PA, Taylor R, Minor BL, Elliott V, Fernandez M, O'Neal L, et al. The REDCap consortium: building an international community of software platform partners. J Biomed Inform. 2019;95:103208. [ FREE Full text ] [ CrossRef ] [ Medline ]
  • Midway S, Robertson M, Flinn S, Kaller M. Comparing multiple comparisons: practical guidance for choosing the best multiple comparisons test. PeerJ. 2020;8:e10387. [ FREE Full text ] [ CrossRef ] [ Medline ]
  • R Core Team. R: A Language and Environment for Statistical Computing. Vienna, Austria. R Foundation for Statistical Computing; 2023.
  • Shaver J. The state of telehealth before and after the COVID-19 pandemic. Prim Care. 2022;49(4):517-530. [ FREE Full text ] [ CrossRef ] [ Medline ]
  • Hyder MA, Razzak J. Telemedicine in the United States: an introduction for students and residents. J Med Internet Res. 2020;22(11):e20839. [ FREE Full text ] [ CrossRef ] [ Medline ]
  • Doraiswamy S, Abraham A, Mamtani R, Cheema S. Use of telehealth during the COVID-19 pandemic: scoping review. J Med Internet Res. 2020;22(12):e24087. [ FREE Full text ] [ CrossRef ] [ Medline ]
  • Garfan S, Alamoodi AH, Zaidan BB, Al-Zobbi M, Hamid RA, Alwan JK, et al. Telehealth utilization during the Covid-19 pandemic: a systematic review. Comput Biol Med. 2021;138:104878. [ FREE Full text ] [ CrossRef ] [ Medline ]
  • Lama Y, Davidoff AJ, Vanderpool RC, Jensen RE. Telehealth availability and use of related technologies among medicare-enrolled cancer survivors: cross-sectional findings from the onset of the COVID-19 pandemic. J Med Internet Res. 2022;24(1):e34616. [ FREE Full text ] [ CrossRef ] [ Medline ]
  • Moulaei K, Moulaei R, Bahaadinbeigy K. Barriers and facilitators of using health information technologies by women: a scoping review. BMC Med Inform Decis Mak. 2023;23(1):176. [ FREE Full text ] [ CrossRef ] [ Medline ]
  • Rodriguez JA, Shachar C, Bates DW. Digital inclusion as health care: supporting health care equity with digital-infrastructure initiatives. N Engl J Med. 2022;386(12):1101-1103. [ FREE Full text ] [ CrossRef ] [ Medline ]
  • Healthy people 2030: health IT. U.S. Department of Health and Human Services. URL: https://health.gov/healthypeople/objectives-and-data/browse-objectives/health-it [accessed 2024-03-14]
  • Benda NC, Veinot TC, Sieck CJ, Ancker JS. Broadband internet access is a social determinant of health!. Am J Public Health. 2020;110(8):1123-1125. [ CrossRef ] [ Medline ]
  • Francis J, Kadylak T, Makki TW, Rikard RV, Cotten SR. Catalyst to connection: when technical difficulties lead to social support for older adults. Am Behav Sci. 2018;62(9):1167-1185. [ CrossRef ]
  • Cotten SR, Yost EA, Berkowsky RW, Winstead V, Anderson WA. Designing Technology Training for Older Adults in Continuing Care Retirement Communities, 1st Edition. Boca Raton, FL. CRC Press; 2016.
  • Sadasivam RS, Kinney RL, Lemon SC, Shimada SL, Allison JJ, Houston TK. Internet health information seeking is a team sport: analysis of the Pew internet survey. Int J Med Inform. 2013;82(3):193-200. [ CrossRef ] [ Medline ]
  • Luger TM, Hogan TP, Richardson LM, Cioffari-Bailiff L, Harvey K, Houston TK. Older veteran digital disparities: examining the potential for solutions within social networks. J Med Internet Res. 2016;18(11):e296. [ FREE Full text ] [ CrossRef ] [ Medline ]
  • Houston TK, Richardson LM, Cotten SR. Patient-directed digital health technologies: is implementation outpacing evidence? Med Care. 2019;57(2):95-97. [ CrossRef ] [ Medline ]

Abbreviations

Edited by G Eysenbach, T Leung; submitted 26.10.23; peer-reviewed by K Moulaei; comments to author 19.12.23; revised version received 24.01.24; accepted 09.03.24; published 08.04.24.

©Jessica A Palakshappa, Erica R Hale, Joshua D Brown, Carol A Kittel, Emily Dressler, Gary E Rosenthal, Sarah L Cutrona, Kristie L Foley, Emily R Haines, Thomas K Houston II. Originally published in the Journal of Medical Internet Research (https://www.jmir.org), 08.04.2024.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work, first published in the Journal of Medical Internet Research, is properly cited. The complete bibliographic information, a link to the original publication on https://www.jmir.org/, as well as this copyright and license information must be included.

journal website for research paper

Environmental Geochemistry and Health

Official Journal of the Society for Environmental Geochemistry and Health

  • Publishes original research, short communications, and reviews across the broad field of environmental geochemistry and its link to health aspects.
  • Welcomes papers directly linking health and the environment that may be theoretical, interpretative, or experimental.
  • Surveys of soil, water, and plants to show how major/trace elements are distributed geographically (must have enough sample size).
  • Upon submission, authors are invited to provide a novelty statement in the cover letter.
  • The journal is lead by 2 Editors in Chief and a large editorial board spread across the globe.
  • Michael Watts
  • Diane Purchase

Societies and partnerships

New Content Item

Latest articles

Transport and retention of ciprofloxacin with presence of multi-walled carbon nanotubes in the saturated porous media: impacts of ionic strength and cation types.

  • Ruihao Xiao
  • Danlian Huang
  • Zhousha Tang

journal website for research paper

Distribution characteristics of soil carbon density and influencing factors in Qinghai–Tibet Plateau region

journal website for research paper

Nitrate denitrification rate response to temperature gradient change during river bank infiltration

  • Tiejun Song

journal website for research paper

Toxicological profile and potential health concerns through metals and trace elements exposure in brick kiln workers from Lahore, Pakistan

  • Talha Saeed
  • Naeem Akhtar Abbasi
  • Muhammad Fahim Khokhar

journal website for research paper

Association between exposure to multiple metals and stress urinary incontinence in women: a mixture approach

  • Xiaodie Yao

journal website for research paper

Journal updates

Manuscript submission cover letter template.

To open the template please click here

Special Issues/Topical Collections proposal form

To download the form please click here

Special Issues/Topical Collections guidelines

Environmental Geochemistry and Health enables and encourages the publication of Special Issues/Topical Collections. The guidelines for their preparation and publication can be found here

Thank you to our Early Career Researchers

Enjoy free-access to these papers for a period of 8 weeks (until 1st September 2020)!  

Journal information

  • Astrophysics Data System (ADS)
  • Biological Abstracts
  • CAB Abstracts
  • Chemical Abstracts Service (CAS)
  • Current Contents/Agriculture, Biology & Environmental Sciences
  • Current Contents/Engineering, Computing and Technology
  • Engineering Village – GEOBASE
  • Google Scholar
  • INIS Atomindex
  • Japanese Science and Technology Agency (JST)
  • OCLC WorldCat Discovery Service
  • Science Citation Index Expanded (SCIE)
  • Semantic Scholar
  • TD Net Discovery Service
  • UGC-CARE List (India)

Rights and permissions

Springer policies

© Springer Nature B.V.

  • Find a journal
  • Publish with us
  • Track your research

COMMENTS

  1. Google Scholar

    Google Scholar provides a simple way to broadly search for scholarly literature. Search across a wide variety of disciplines and sources: articles, theses, books, abstracts and court opinions.

  2. JSTOR Home

    Harness the power of visual materials—explore more than 3 million images now on JSTOR. Enhance your scholarly research with underground newspapers, magazines, and journals. Explore collections in the arts, sciences, and literature from the world's leading museums, archives, and scholars. JSTOR is a digital library of academic journals ...

  3. ScienceDirect.com

    Keep up to date with health and medical developments to stimulate research and improve patient care. Search our books and journals covering education, reference information, decision support and more. Actas Dermo-Sifiliográficas (English Edition), Volume 111, Issue 4. Resuscitation, Volume 83, Issue 11. FEBS Letters, Volume 584, Issue 9.

  4. Sage Journals: Your gateway to world-class journal research

    Sage Journals profile Access personal tools including new content email alerts, search alerts and saved searches. Access personal subscriptions, purchases, free access offers, and paired institution or society access.

  5. Home

    As part of Springer Nature, SpringerLink delivers fast access to the depth and breadth of our online collection of journals, eBooks, reference works and protocols across a vast range of subject disciplines. SpringerLink is the reading platform of choice for hundreds of thousands of researchers worldwide. Find out how to publish your research ...

  6. ResearchGate

    Access 160+ million publications and connect with 25+ million researchers. Join for free and gain visibility by uploading your research.

  7. Directory of Open Access Journals

    About the directory. DOAJ is a unique and extensive index of diverse open access journals from around the world, driven by a growing community, and is committed to ensuring quality content is freely available online for everyone. DOAJ is committed to keeping its services free of charge, including being indexed, and its data freely available.

  8. Frontiers

    Find a journal. We have a home for your research. Our community led journals cover more than 1,500 academic disciplines and are some of the largest and most cited in their fields. ... Here are just five amazing papers you may have missed. RESEARCH TOPICS. Published on 07 Feb 2024

  9. Nature

    First published in 1869, Nature is the world's leading multidisciplinary science journal. Nature publishes the finest peer-reviewed research that drives ground-breaking discovery, and is read by ...

  10. Wiley Online Library

    One of the largest and most authoritative collections of online journals, books, and research resources, covering life, health, social, and physical sciences. Wiley Online Library | Scientific research articles, journals, books, and reference works

  11. Journals

    Asian-Pacific Journal of Second and Foreign Language Education. Disciplinary and Interdisciplinary Science Education Research. Empirical Research in Vocational Education and Training. International Journal of Child Care and Education Policy. International Journal of STEM Education. Language Testing in Asia.

  12. Web of Science Master Journal List

    Browse, search, and explore journals indexed in the Web of Science. The Master Journal List is an invaluable tool to help you to find the right journal for your needs across multiple indices hosted on the Web of Science platform. Spanning all disciplines and regions, Web of Science Core Collection is at the heart of the Web of Science platform. Curated with care by an expert team of in-house ...

  13. 21 Legit Research Databases for Free Journal Articles in 2022

    These databases provide a variety of free sources, from abstracts and citations to full-text, peer-reviewed OA journals. With databases covering specific areas of research and interdisciplinary databases that provide a variety of material, these are some of our favorite free databases, and they're totally legit! 1.

  14. Journals

    The home of 500 peer-reviewed journals published by Oxford University Press and learned societies from around the world. Explore ... Proteomics & Bioinformatics ISME Communications JBMR® Plus Journal of Bone and Mineral Research Journal of Evolutionary Biology Journal of Occupational Health NAR Molecular Medicine Radiology Advances RSS Data ...

  15. Find a journal

    Elsevier Journal Finder helps you find journals that could be best suited for publishing your scientific article. Journal Finder uses smart search technology and field-of-research specific vocabularies to match your paper's abstract to scientific journals.

  16. Home

    The site is secure. ... (PMC) is a free full-text archive of biomedical and life sciences journal literature at the U.S. National Institutes of Health's National Library of Medicine (NIH/NLM) About PMC Discover a digital archive of scholarly articles, spanning centuries of scientific research. User Guide ...

  17. Search

    Find the research you need | With 160+ million publications, 1+ million questions, and 25+ million researchers, this is where everyone can access science

  18. CORE

    Research Policy Adviser. Aggregation plays an increasingly essential role in maximising the long-term benefits of open access, helping to turn the promise of a 'research commons' into a reality. The aggregation services that CORE provides therefore make a very valuable contribution to the evolving open access environment in the UK.

  19. Internet Archive Scholar

    Search Millions of Research Papers. This fulltext search index includes over 35 million research articles and other scholarly documents preserved in the Internet Archive. The collection spans from digitized copies of eighteenth century journals through the latest Open Access conference proceedings and preprints crawled from the World Wide Web.

  20. Semantic Scholar

    Semantic Reader is an augmented reader with the potential to revolutionize scientific reading by making it more accessible and richly contextual. Try it for select papers. Semantic Scholar uses groundbreaking AI and engineering to understand the semantics of scientific literature to help Scholars discover relevant research.

  21. Research articles

    A global timekeeping problem postponed by global warming. Increased melting of ice in Greenland and Antarctica, measured by satellite gravity, has decreased the angular velocity of Earth more ...

  22. Research articles

    Efficient reduction of vanadium (V) with biochar and experimental parameters optimized by response surface methodology. Hao Peng. Laixin Wang. Yinhe Lin. Article Open Access 06 Apr 2024.

  23. ScienceOpen

    Make an impact and build your research profile in the open with ScienceOpen. Search and discover relevant research in over 93 million Open Access articles and article records; Share your expertise and get credit by publicly reviewing any article; Publish your poster or preprint and track usage and impact with article- and author-level metrics; Create a topical Collection to advance your ...

  24. The Journal of Entrepreneurship: Sage Journals

    The Journal of Entrepreneurship is a multidisciplinary forum for the publication of articles and research and discussion of issues that bear upon and enfold the field of entrepreneurship. Topics appropriate and related to entrepreneurship include intrapreneurship, managership, organisational behaviour, leadership, motivation, training and ethical/ moral notions guiding entrepreneurial behaviour.

  25. Recently Published

    Explore this issue of The New England Journal of Medicine (Vol. 0 No. 0).

  26. Physical Review Research

    Accepted Paper; Maximizing quantum-computing expressive power through randomized circuits ... Phys. Rev. Research Yingli Yang, Zongkang Zhang, Anbang Wang, Xiaosi Xu, Xiaoting Wang, and Ying Li Accepted ... Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any ...

  27. Journal of Medical Internet Research

    Background: Numerous prior opinion papers, administrative electronic health record data studies, and cross-sectional surveys of telehealth during the pandemic have been published, but none have combined assessments of video visit success monitoring with longitudinal assessments of perceived challenges to the rapid adoption of video visits during the pandemic.

  28. Trial of Lixisenatide in Early Parkinson's Disease

    Lixisenatide, a glucagon-like peptide-1 receptor agonist used for the treatment of diabetes, has shown neuroprotective properties in a mouse model of Parkinson's disease. In this phase 2, double ...

  29. Home

    Overview. Environmental Geochemistry and Health is a cross-disciplinary journal that publishes innovative research linking health and the environment. Publishes original research, short communications, and reviews across the broad field of environmental geochemistry and its link to health aspects. Welcomes papers directly linking health and the ...

  30. Optimal Planning for Wind Turbines in Mega Seaports Considering ...

    A Feature Paper should be a substantial original Article that involves several techniques or approaches, provides an outlook for future research directions and describes possible research applications. Feature papers are submitted upon individual invitation or recommendation by the scientific editors and must receive positive feedback from the ...