30 Best Scientific Search Engines For Efficient Research

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Are you tired of spending hours searching for reliable information to enhance your writing? Finding the proper research tools can be like finding a needle in a haystack. But what if there was a solution that could simplify your research process and help you write efficient papers, summaries, and articles with AI? This guide has the answer you've been looking for.

Introducing Unriddle's AI Research Assistant, a valuable tool that can help you achieve your goals effortlessly.

What Is A Scientific Search Engine?

Scientific search engines are specially designed to provide researchers and scientists with the most relevant information for their work. These search engines filter out non-scientific sites and focus only on web pages containing scientific content, helping users quickly locate scientific information.

They can uncover peer-reviewed articles like PDF and PostScript files, often invisible to other search engines. Moreover, these search engines can search the most comprehensive combination of web information, preprint servers, digital archives, repositories, and patent and journal databases.

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Importance Of Scientific Search Engines

1. Developing Scientific Research Skills

Scientific search engines are crucial for enhancing scientists' research skills. They assist researchers in identifying the most efficient ways to access accurate scientific information, thereby avoiding randomization in their studies. Using the best scientific search engines, researchers can streamline their research process and ensure their findings are based on solid scientific evidence.

2. Increasing Knowledge and Expanding Expertise

Scientific search engines help broaden researchers' knowledge and expertise by providing access to new information in their specialized fields. Researchers can stay updated on the latest developments and discoveries in their areas of interest, contributing to expanding their knowledge base.

3. Contributing to State Development

Scientific research is vital in advancing various state sectors, benefiting the general public. By leveraging the latest technologies and scientific advancements, researchers can provide innovative solutions that improve people's lives and make daily activities more accessible and efficient.

4. Supporting Industrial Development

Scientific search engines facilitate the integration of modern technologies into industries, leading to increased productivity and the elimination of traditional manufacturing methods. By adopting cutting-edge technologies, industries can enhance production rates and deliver high-quality products to consumers.

5. Validating Previous Scientific Studies

Utilizing scientific search engines allows new researchers to check and review previous studies on similar scientific subjects. By examining the validity of earlier research findings, researchers can build upon existing knowledge and contribute new insights to the scientific community, promoting progress in their respective fields.

30 Best Scientific Search Engines For Efficient Research

1. Unriddle.AI

Unriddle.AI is a cutting-edge platform that enables users to read faster and write better with the power of AI. This tool simplifies complex topics, takes notes, generates summaries, and enhances writing efficiency. With Unriddle.AI, researchers and students can quickly access information in documents, link relevant sources from their library, avoid citation errors, and improve their writing with AI-autocomplete suggestions.

2. CORE

CORE is a comprehensive aggregator of open access (OA) research articles, boasting the most extensive collection of OA articles that are accessible online. Researchers can search over 219 million OA articles, with five million records hosted directly on CORE. This platform offers users a simple interface with advanced search options for filtering results by publication type, year, language, journal, repository, and author.

3. Google Scholar

Google Scholar is a leading academic search engine that empowers users to find research papers across various academic disciplines for free. It provides links to full-text PDF files, making it a valuable resource for researchers. Google Scholar's advanced search capabilities allow users to search for articles by keywords, author name, journal name, and publication date, among other criteria.

4. ScienceOpen

ScienceOpen operates as a research and publishing network, offering Open Access to more than 74 million articles in diverse scientific domains. This platform, founded in 2013, aims to foster open and public communication among academics. With ScienceOpen, users can export search results, bookmark articles for later reference, interact with other researchers, track usage and citations, and participate in an interactive bibliography.

5. BASE

BASE, hosted at Bielefeld University, Germany, stands for Bielefeld Academic Search Engine. This platform provides access to many academic resources, including research articles, theses, and dissertations, making it a go-to resource for scholarly research.

6. Directory of Open Access Journals

The Directory of Open Access Journals (DOAJ) is a multidisciplinary, community-curated directory that grants researchers access to high-quality, peer-reviewed journals. DOAJ's user-friendly interface allows researchers to browse by subject, search by keyword, and access abstracts in a collapsible format directly from the search screen.

7. Science.gov

Science.gov is a comprehensive resource that consolidates free search results from over 15 U.S. federal agencies, eliminating the need to search these resources individually. This platform is a valuable tool for researchers across various scientific disciplines.

8. PubMed

PubMed is a free database provided by the U.S. National Library of Medicine, focusing on biomedical sciences. With over 32 million citations for biomedical literature, PubMed is an invaluable resource for medical, biochemistry, and related sciences researchers.

9. PsycINFO

PsycINFO, a database offered by the American Psychological Association, specializes in psychology and related disciplines. With over 4 million records, PsycINFO provides extensive international coverage, advanced search capabilities, and various filters to refine search results.

10. Education Resources Information Center

The Education Resources Information Center (ERIC) allows users to search for education-related material by topic. In addition to indexing journals, ERIC includes gray literature, books, and government documents. Users can access a formal review process for all materials indexed on ERIC.

11. ProQuest

ProQuest is a robust research database with access to over 90,000 academic journals, magazines, newspapers, and more than 15 million dissertations and theses. It covers various subjects, including business, health, education, and social sciences. The platform's advanced search features allow you to limit your search results by date range, language, and type of publication.

12. JSTOR

JSTOR is a comprehensive digital library that offers full-text access to over 12 million academic articles, books, and primary sources. The platform is ideal for researchers and students in the humanities, social sciences, and natural sciences. Its user-friendly interface allows you to search for materials by keyword, author, title, or subject, with advanced search options such as Boolean operators to help you refine your search.

13. ResearchGate

ResearchGate is a popular social networking site for academics and researchers to collaborate. With over 17 million users, it allows scholars to create profiles, share publications, ask and answer questions, and network with other researchers. The platform also offers a citation tracker and reputation score to help scholars manage their research activity.

14. Grammarly

Grammarly is a real-time writing tool that checks spelling, punctuation, and style. Created by linguists and software engineers in 2009, it is one of the most popular writing tools available. Grammarly comes in free and premium versions, with the premium version offering genre-specific writing style advice, plagiarism detection, and readability scoring.

15. Microsoft Academic

Microsoft Academic is a free public search engine that offers access to scientific, technical, engineering, mathematical, social science, and humanities research papers, journals, conference proceedings, and scholarly publications. Leveraging advanced natural language processing and machine learning, Microsoft Academic helps scholars find relevant material, track field changes, and manage author profiles and research domains.

16. Library of Congress

As the most extensive library in the world, the Library of Congress offers a wealth of online resources for academic research. Students can search its collections to access digital resources, videos, audio recordings, photographs, maps, notated music, web archives, legislation, and 3D objects. The library's collections cover almost any topic, from historic American newspapers to pirate trials.

17. Evernote

Evernote lets users capture, organize, and share notes and information across devices. It helps users recall personal notes, to-do lists, business documents, and research notes. With features like tagging, search, and device synchronization, Evernote makes it easy for users to find and retrieve their notes anytime, anywhere. The premium edition includes PDF annotation, presentation mode, and team collaboration functionalities.

18. QuestionPro Insight Hub

QuestionPro Insight Hub connects businesses and organizations with millions of consumers and expert panelists globally for market research. Users can build surveys, run polls, conduct focus groups, and collect data from various channels. Advanced analytics and reporting options enable users to evaluate data, understand customer behavior, preferences, and opinions, and make informed business decisions based on consumer insights. The platform caters to startups and enterprise-level enterprises in healthcare, education, finance, and more.

19. Google Books

Google Books is a valuable resource for finding recent and out-of-print publications, with over 40 million books available. Users can enter any search term to find relevant books and download the full text of books in the public domain. The site also includes reference pages with links to book reviews. While access to recent books may be limited, Google Books is an excellent starting point to find sources for academic research.

20. Digital Commons Network

Curated by university librarians, the Digital Commons Network connects students with peer-reviewed articles, dissertations, book chapters, conference proceedings, and working papers across various disciplines. Users can access scholarly work in architecture, business, education, law, sciences, humanities, social sciences, and engineering.

21. WorldCat

WorldCat is a comprehensive database connected to over 10,000 libraries, allowing users to search library collections for books, articles, music, videos, audiobooks, and scholarly articles. Users can also find digital research materials, including photos, and access full-text articles and other resources through their university libraries. WorldCat is a valuable tool for finding materials unavailable online and requesting sources through interlibrary loan services.

SSRN is a collection of social science papers, offering over 700,000 abstracts and more than 600,000 full-text papers. While there is no specific option to search only for full-text articles, most documents on the platform are free to access. Users can register for free to interact with scholars worldwide, search for scholarly articles on 67 social science topics, and access research networks on the platform.

23. ScienceResearch.com

ScienceResearch.com is a free deep web search engine that uses advanced federated search technology to return high-quality results by submitting search queries in real time to other respected search engines. It then ranks and eliminates duplicates to provide relevant results for researchers.

24. WorldWideScience.org

WorldWideScience.org is a global science gateway featuring national and international scientific databases and portals. The platform accelerates scientific discovery by providing one-stop searching of databases worldwide and offers real-time searching and translation of multilingual scientific literature.

25. Wolfram Alpha

Wolfram Alpha is a computational knowledge engine designed to answer factual questions in natural language. Users can type questions like "What is the square root of 64?" or "What is the boiling point of water?" to receive instant answers. Wolfram Alpha can also be used to find academic articles by entering keywords for a list of relevant articles.

26. iSEEK Education

iSEEK Education is a search engine targeting students, teachers, administrators, and caregivers, offering editor-reviewed content for safety. The platform includes a "Cited by" feature that shows how often other researchers have cited an article.

27. Semantic Scholar

Semantic Scholar aims to provide relevant and effective search results using artificial intelligence-powered methods to detect hidden relationships between research topics. The platform leverages AI to deliver more accurate and insightful search results for researchers.

28. DataONE Search

DataONE Search is a social networking site for academics to share and discover academic articles and papers. Users can find academic papers shared by other researchers and follow scholars to receive updates on new papers or changes to their profiles. The platform fosters collaboration and knowledge sharing among researchers with expertise in various topics.

29. DataElixir

DataElixir is designed to help users find, understand, and use data, offering a curated list of the best open datasets, tools, and resources for data science. With easy navigation and regularly updated content grouped by category, DataElixir is a valuable resource for data scientists and researchers.

30. LazyScholar

LazyScholar is a free browser plugin that helps users discover free academic full texts, metrics, and instant citation and sharing links. Created by a postdoctoral fellow at Indiana University, LazyScholar allows researchers to easily access academic articles and resources to enhance their research productivity.

Complete Step-by-Step Guide On How To Use Unriddle's AI Research Tool

Here is a step-by-step guide on how to use Unriddle. I’ve also copied it below :)

From here, it's pretty simple.

Unriddle helps you read, write and learn faster.

Interact with documents via AI so you can quickly find and understand info.

Then start writing in a new Note and Unriddle will show you relevant content from your library as you type.

Get started by uploading a document.

Or read on for the full rundown.

Interact with documents

When you upload a document, Unriddle generates an AI assistant on top of this data.

Click 'New' in the right sidebar and then select 'Upload' to get started.

Use this assistant to answer specific questions about the text, summarize content and simplify jargon.

The trick is to be super clear about what you want.

If you're summarizing a research paper, for example, instead of saying “Summarize” or “Summarize this research paper”, say something like “Explain this research paper to me in simple terms. What method did the researchers use? What did they find? Why does it matter?”.

The second prompt will produce a much better overview of the paper because we're giving the AI more hints about what we want.

Automatic relations

Unriddle grasps the context behind each Note and Document in your library and automatically links them based on meaning.

Let's say you have a collection of nuclear physics papers in your library.

When you start writing a note about The Manhattan Project, simply mentioning "The Manhattan Project" will prompt Unriddle to find the connection between this note and the nuclear physics papers.

Even if you didn't explicitly mention the research papers, Unriddle's knowledge of Oppenheimer, his work, and the significant relevance of these papers means it understands the connection and automatically links them together.

In short, Unriddle shows you relevant content from your library at the exact moment you need it, even if you haven't explicitly mentioned it.

Citing your sources

Writing is hard when you have a ton of sources to track.

So we made it easy.

Highlight some text, click ‘Cite’ and you’ll see items from your library that contain information related to the selection of text you just highlighted as determined by our AI.

When you select an item Unriddle inserts a link into highlighted text that, when clicked, takes you to the referenced item.

Writing with AI

Click ‘New’ in the sidebar and hit ‘Note’ to open up a new note.

Here you’ll find all the text formatting options you’re used to and more.

Type ‘++’ to generate text based on the context of what’s already written.

Highlight text and click ‘Ask AI’ to open up the AI menu where you’ll find options to improve, expand, summarize and explain.

You can type custom prompts too!

Finally, you can open any note in a pane on the right side of the screen while interacting with documents. Just click the orange pencil icon at the top of the chat window.

Chat Settings

Adjust the model, temperature and response length in the Setting sidebar.

Click the cog icon in the top right corner of the screen and look for "Chat Settings".

These apply across all documents but you can easily flip between them regardless of settings at the time of upload.

Model: the machine learning model used to generate responses.

Temperature: the amount of creative license you give to the AI.

Max length: the maximum number of words generated in a response.

Got feedback or questions? Send us an email and we'll get back to you within a day.

— Naveed

5 Types Of Scientific Research

1. Theoretical Research

The first research type we'll dive into is theoretical research. This form of scientific research aims to produce a set of theoretically proven laws and theories. Its primary purpose is to contribute to the growth of knowledge, serve studies, and establish a documented ground for applied science. Theoretical research is about generating new knowledge on different topics and areas of study that can help improve the understanding of various phenomena in the scientific realm.

2. Applied Research

Applied research, on the other hand, is concerned with the practical side and the application of available knowledge to discover more accurate facts, solve various problems, and develop work methods to achieve higher production levels. This type of research focuses more on the practical application of theories and laws established through theoretical research. Applied research is crucial for taking the abstract knowledge generated through theoretical study and applying it to real-world scenarios and problems to drive innovation and advancements in various fields.

3. Descriptive Research

Descriptive research is another essential form of scientific research that aims to describe various phenomena, monitor spatial and temporal conditions, and reach a clear understanding of these phenomena. This type includes several methods: observation, personal interviews, and paper or electronic survey tests. Descriptive research is vital for providing a comprehensive understanding of specific phenomena and for gathering relevant data that can be used in other forms of research.

4. Historical Research

Historical research has a similar descriptive form to the previous type, but it is limited to events that have already occurred. Its primary purpose is to document the past and analyze its events to provide new methods for avoiding past pitfalls and predicting a better future. Historical research is essential for understanding the roots of current issues, learning from past mistakes, and predicting potential future outcomes based on historical data.

5. Experimental Research

The last type of scientific research we'll explore is experimental research. This research analyzes problems and phenomena based on the experimental method through observation, developing hypotheses, and checking the details for authenticity to verify their validity. In this type, researchers adjust all variables and control them to serve the content of their research, which is a distinguishing factor of experimental research compared to other types. Experimental research is critical for testing hypotheses, verifying theories, and exploring new possibilities in various fields of study.

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Read Faster & Write Better With Unriddle for Free Today

Unriddle is the ultimate research tool for enhancing their reading and writing experience. This platform combines the power of artificial intelligence with a user-friendly interface to help you read faster and write better. With Unriddle, you can quickly find information in documents, simplify complex topics, take notes, and write soon.

One of the standout features of Unriddle is its AI assistant, which can be generated on top of any document. This assistant helps you quickly find, summarize, and understand information without endless skimming. Unriddle is designed to understand the meaning behind your writing and automatically link you to relevant things you've read or written about. This feature is convenient for researchers and students who must keep track of various sources and citations.

Another useful feature of Unriddle is its ability to highlight text and display the most relevant sources from your library using AI. This can help you quickly refer to specific information without searching your entire document. Additionally, Unriddle can generate text with AI autocomplete to improve and expand your writing, providing suggestions based on the context of your work.

Unriddle offers a collaborative workspace where multiple users can contribute and chat in real-time while working on the same documents. This feature is ideal for teams working on research projects or collaborative writing assignments.

Unriddle is a game-changer for researchers and students looking to streamline their reading and writing processes. By harnessing the power of AI, this tool can help you work more efficiently and effectively, saving you time and energy in the long run. Ready to enhance your research experience? Try Unriddle for free today and see the difference for yourself.