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1. Before 1957  (21,214)
2. 1957 To 1973  (39,629)
3. 1974 To 1990  (146,007)
4. 1991 To 2008  (524,903)
5. After 2008  (1,567,138)
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New Records 

1. New From Last Month  (5,329)
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1. Articles  (1,106,123)
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4. Book Chapters  (31,791)
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7. Conference Proceedings  (11,500)
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1. Science & Technology  (786,702)
2. Chemistry  (546,972)
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4. Metallurgy  (393,420)
5. Physics  (331,352)
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8. Performing Operations  (244,412)
9. Mechanical Engineering  (242,842)
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11. Lighting  (226,149)
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13. Weapons  (225,514)
14. Materials Science  (220,967)
15. Electricity  (220,281)
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17. Basic Electric Elements  (173,217)
18. Materials Science, Multidisciplinary  (161,090)
19. Exact Sciences And Technology  (131,676)
20. Engineering  (122,384)
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Author/Creator 

1. National Research Council (U.S.)  (2)
2. IARC Working Group on the Evaluation of Carcinogenic Risks to Humans  (1)
3. Committee on Materials for High-Temperature Semiconductor Devices, Commission on Engineering and Technical Systems, National Research Council  (1)
4. United States  (1)
5. National Research Council (U.S.). Committee on Coatings for High-Temperature Structural Materials  (1)
6. National Research Council, Office of Naval Research, and the Air Force Office of Scientific Research  (1)
7. National Research Council Staff  (1)
8. Office of Naval Research  (1)
9. Committee on Advanced Fibers for High-Temperature Ceramic Composites, Commission on Engineering and Technical Systems, National Research Council  (1)
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Databases 

1. esp@cenet  (995,446)
2. ProQuest Central  (712,154)
3. DOAJ Directory of Open Access Journals  (392,498)
4. ROAD: Directory of Open Access Scholarly Resources  (318,843)
5. Geneva Foundation Free Medical Journals  (193,953)
6. PubMed Central  (166,259)
7. MEDLINE  (104,399)
8. Open Access: IOP Publishing Free Content  (56,508)
9. SpringerOpen  (41,119)
10. Open Access: Wiley-Blackwell Open Access Journals  (37,535)
11. IOPscience (Open Access)  (36,634)
12. Open Access: Nature Open Access  (27,181)
13. USPTO Published Applications  (26,710)
14. USPTO Issued Patents  (23,780)
15. HighWire Press (Free Journals)  (23,068)
16. Free E- Journals  (22,861)
17. Hyper Article en Ligne (HAL) (Open Access)  (21,756)
18. Ebook Central - Academic Complete  (19,788)
19. arXiv.org  (17,043)
20. DTIC Technical Reports  (12,272)
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Language 

1. English  (2,179,882)
2. Chinese  (490,468)
3. Japanese  (164,784)
4. French  (86,503)
5. German  (57,571)
6. Korean  (47,039)
7. Russian  (10,745)
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10. Italian  (2,501)
11. Norwegian  (1,824)
12. Swedish  (1,455)
13. Polish  (1,443)
14. Danish  (1,147)
15. Czech  (887)
16. Dutch  (833)
17. Finnish  (797)
18. Ukrainian  (756)
19. Croatian  (754)
20. Slovak  (476)
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Journal Title 

1. arXiv.org  (11,444)
2. Energies  (10,142)
3. Iop Conference Series. Materials Science And Engineering  (12,208)
4. Journal Of Applied Physics  (10,569)
5. Journal Of Materials Science  (13,980)
6. Journal Of Physics: Conference Series  (15,744)
7. Journal Of Physics. Conference Series  (17,425)
8. Journal Of The American Ceramic Society  (12,199)
9. Materials  (17,152)
10. Scientific Reports  (15,276)
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