Main subjects: astrophysics
2. Highwire Press-the second largest free full-text website in the world, with more than 235,865,438+02 full-text articles.
Main subjects: biology, medicine
3.arXiv.org
Main subjects: physics, mathematics, nonlinear science, computer science, etc. PostScript is the main file format. If there is no corresponding reading software, you can choose to generate PDF file format.
4. Behavioral and Brain Science
Main subjects: behavioral science and brain science.
5. Centers for Disease Control and Prevention
Main subject: medicine
6. Tooth marks
Main subjects: psychology, neuroscience, behavioral science, linguistics, artificial intelligence, philosophy.
7.GPOAess
United States government documents
8. Inter-University Political and Social Research Committee
The world's largest social science literature website
9. National College Press
Reports of National Academy of Sciences, National Academy of Engineering, Medical Association, etc.
10. National Center for Health Statistics (NCHS)
Statistical report of the National Center for Health Statistics of the United States
1 1.NCSTRL
Computer science research reports and papers
12.project gutenbergeelectronicpubliclibrary
E-books, providing 10000 full-text e-books before 2002.
13. Thomas Legislative Information Network
Reports and historical documents of the United States Congress provided by the Library of Congress.
14. UNESCO
Documents provided by UNESCO
15. US Geological Survey
American geological survey report
16. World Development Resources (World Bank)
World bank report
17. Delphi
The first 13 page can find patents all over the world.
18 Three Free Journals of American Mathematical Society (AMS)
communiqué
Electronic search
American social notice
19 physics today
Free magazines provided by american physical society.
20 frontier biological sciences
Journals and books of biological sciences, articles are cited by important secondary literature databases, such as Biosis, CA and Medline.
2 1 theworld widewebjournalofbiology
Cited by biological review
22 Journal of Science
23 Scientific American
24 ACM digital library
25 25 issues of American Journal of Science and Technology.
Founded in 1984, four issues throughout the year, ISSN0748-5492, NationalAcademyofSciences, discussing and expounding the policy issues in the development of science and technology and health.
American symbolic logic bulletin.
Founded in 1995 and ISSN 1079-8986, it publishes papers, book reviews and abstracts of discussion papers on symbolic logic in the fields of mathematics, philosophy, computer and linguistics.
Progress in theoretical physics, progress in theoretical physics, Japan.
Founded in 1946, every year 12, ISSN0033-068X, published the research results of Japanese theoretical physicists. This article is published in English, German and French.
Australian Journal of Physics, Australia.
ISSN0004-9506 was founded in 1948 and publishes research papers, newsletters and comments in the field of physics (from elementary particles to astrophysics).
British Journal of New Physics.
ISSN 1367-2630, founded in 1998, is an authoritative full-text electronic magazine in physics. The editor of this magazine tries his best to make New Physics the most important scientific magazine in this field by publishing high-quality articles that are beneficial to physicists and can attract their attention.
American Journal of Biochemistry.
Founded in 1905, 52 issues throughout the year, ISSN002 1-9258, JournalofBiologicalChemistry, published research results in the field of biochemistry. High-priced publications.
3 1ChemicalandBulletin, bulletin of chemistry and pharmacy in Japan.
Founded in 1953, 12, ISSN0009-2363, it publishes research papers and reports on bioanalytical chemistry, biochemistry, pharmacology, toxicology and biopharmaceutics in English.
British Journal of Micromechanics and Microengineering.
ISSN0960- 13 17 was founded in 19960- 17, and published research papers on MEMS, micromechanics and vacuum microelectronics technology, involving the control, program and construction of microsystems, microstructures and devices, integrated circuits, electronic and photonic devices and other infrastructure, instruments and instruments.
VDI-Z Journal of Integrated Production of German Engineers Association, Germany.
Founded in 1857, annual 12, ISSN0042- 1766, he published papers on machine manufacturing, metalworking technology, production planning and management, production system, production evaluation, metalworking equipment and systems, industry news and new product introduction.
American modern machinery store no.34.
Founded in 1928, once a year 12, ISSN0026-8003, it comprehensively reports the news and technical information of manufacturing and machinery industries, including engineering, industrial robots, research and development, programming, safety rules and equipment, etc.
Processing engineering, processing engineering, UK.
Founded in 1920, once a year 12, ISSN0370- 1859, published articles on chemical processing technology, equipment, materials and maintenance.
36 signal "signal", USA.
Please adopt it. Thank you.