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Creation Date 

1. Before 1960  (1,081)
2. 1960 To 1975  (11,324)
3. 1976 To 1991  (77,838)
4. 1992 To 2008  (280,775)
5. After 2008  (460,409)
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New Records 

1. New From Last Month  (19,445)
2. New From Last 3 Month  (19,455)
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Resource Type 

1. Patents  (830,227)
2. Articles  (1,290)
3. magazinearticle  (91)
4. Reports  (28)
5. Book Chapters  (5)
6. Thesises (postgraduate)  (4)
7. Conference Proceedings  (3)
8. Datasets  (1)
9. References  (1)
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Subject 

1. Physics  (830,275)
2. Education  (830,229)
3. Cryptography  (830,227)
4. Display  (830,227)
5. Advertising  (830,227)
6. Electricity  (295,385)
7. Counting  (228,747)
8. Calculating  (228,746)
9. Computing  (228,746)
10. Electric Communication Technique  (178,833)
11. Optics  (178,674)
12. Electric Digital Data Processing  (177,485)
13. Pictorial Communication, E.G. Television  (157,823)
14. Techniques Or Procedures For The Operation Thereof  (151,951)
15. Frequency-Changing  (151,951)
16. Optical Analogue/digital Converters  (151,951)
17. Non-Linear Optics  (151,951)
18. Optical Logic Elements  (151,951)
19. Basic Electric Elements  (86,587)
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Databases 

1. esp@cenet  (830,227)
2. ProQuest Central  (1,144)
3. DOAJ Directory of Open Access Journals  (499)
4. ROAD: Directory of Open Access Scholarly Resources  (434)
5. PubMed Central  (303)
6. Geneva Foundation Free Medical Journals at publisher websites  (281)
7. MEDLINE  (279)
8. Public Library of Science (PLoS) Journals Open Access  (133)
9. Wiley Open Access Journals  (109)
10. JSTOR Early Journal Content Free  (69)
11. Springer Open Access  (61)
12. HighWire Press (Free Journals)  (48)
13. Hyper Article en Ligne (HAL) (Open Access)  (32)
14. DTIC STINET  (28)
15. DTIC Technical Reports  (28)
16. ProQuest One Psychology  (21)
17. NORA - Norwegian Open Research Archives  (20)
18. SWEPUB Freely available online  (17)
19. Taylor & Francis Open Access  (15)
20. IOP_英国物理学会OA刊  (14)
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Language 

1. English  (752,034)
2. Chinese  (159,866)
3. French  (92,002)
4. Korean  (62,133)
5. German  (60,652)
6. Japanese  (43,412)
7. Russian  (2,626)
8. Spanish  (2,594)
9. Portuguese  (1,644)
10. Swedish  (716)
11. Italian  (640)
12. Dutch  (510)
13. Finnish  (501)
14. Danish  (342)
15. Norwegian  (327)
16. Polish  (235)
17. Czech  (74)
18. Hungarian  (66)
19. Ukrainian  (51)
20. Indonesian  (47)
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Journal Title 

1. Aquatic Mammals  (22)
2. Arctic  (29)
3. Canadian Journal Of Zoology  (45)
4. Ecology And Evolution  (50)
5. Frontiers In Marine Science  (35)
6. Industrial Lubrication And Tribology  (23)
7. Journal Of Mammalogy  (44)
8. Marine Ecology. Progress Series  (28)
9. Plos One  (130)
10. Polar Biology  (38)
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