全文获取类型
收费全文 | 2095篇 |
免费 | 193篇 |
国内免费 | 82篇 |
专业分类
耳鼻咽喉 | 11篇 |
儿科学 | 86篇 |
妇产科学 | 20篇 |
基础医学 | 312篇 |
口腔科学 | 27篇 |
临床医学 | 333篇 |
内科学 | 558篇 |
皮肤病学 | 39篇 |
神经病学 | 84篇 |
特种医学 | 317篇 |
外科学 | 145篇 |
综合类 | 39篇 |
预防医学 | 147篇 |
眼科学 | 23篇 |
药学 | 127篇 |
肿瘤学 | 102篇 |
出版年
2021年 | 18篇 |
2019年 | 15篇 |
2018年 | 19篇 |
2017年 | 15篇 |
2016年 | 18篇 |
2015年 | 31篇 |
2014年 | 25篇 |
2013年 | 57篇 |
2012年 | 40篇 |
2011年 | 57篇 |
2010年 | 76篇 |
2009年 | 62篇 |
2008年 | 56篇 |
2007年 | 95篇 |
2006年 | 64篇 |
2005年 | 72篇 |
2004年 | 32篇 |
2003年 | 54篇 |
2002年 | 61篇 |
2001年 | 47篇 |
2000年 | 49篇 |
1999年 | 61篇 |
1998年 | 110篇 |
1997年 | 102篇 |
1996年 | 125篇 |
1995年 | 95篇 |
1994年 | 94篇 |
1993年 | 86篇 |
1992年 | 40篇 |
1991年 | 51篇 |
1990年 | 38篇 |
1989年 | 47篇 |
1988年 | 54篇 |
1987年 | 59篇 |
1986年 | 49篇 |
1985年 | 51篇 |
1984年 | 30篇 |
1983年 | 31篇 |
1982年 | 33篇 |
1981年 | 33篇 |
1980年 | 28篇 |
1979年 | 14篇 |
1978年 | 18篇 |
1977年 | 22篇 |
1976年 | 21篇 |
1975年 | 16篇 |
1974年 | 9篇 |
1972年 | 10篇 |
1970年 | 7篇 |
1969年 | 10篇 |
排序方式: 共有2370条查询结果,搜索用时 15 毫秒
1.
2.
3.
Nuray
. Kanbur Eudice Goldberg Leora Pinhas Robert M. Hamilton Robin Clegg Debra K. Katzman 《The International journal of eating disorders》2009,42(6):575-578
Anorexia nervosa (AN) can cause both functional and structural cardiac complications, including a variety of different conduction abnormalities. This is the first case report of symptomatic diurnal second‐degree atrioventricular (AV) block (Mobitz Type I) in an adolescent with AN. We present a 12‐year‐old girl with AN, restrictor sub‐type who reported cardiac symptoms during weight gain, at the time of the initial diagnosis of AV block. Second‐degree AV block (Mobitz Type I) is discussed as a possible complication of the AN, as well as being an intrinsic conduction system disease. © 2009 by Wiley Periodicals, Inc. Int J Eat Disord 2009 相似文献
4.
S F Viegas A F Tencer J Cantrell M Chang P Clegg C Hicks C O'Meara J B Williamson 《The Journal of hand surgery》1987,12(6):978-985
An experimental model with a static positioning frame, pressure-sensitive film (Fuji), and a microcomputer-based video digitizing system, previously developed by the two senior authors, was used in this study to examine the effects of increasing perilunate instability on the load transfer characteristics of the wrist. These effects included a significant dorsal ulnar shift of the scaphoid centroid with increasing perilunate instability together with a less dramatic palmar ulnar shift of the lunate centroid. Overall, the scaphoid contact area was found to decrease as the stage of perilunate instability increased, even in ulnar deviation and/or extension, which in the normal wrist was found to be the positions that had the greatest scaphoid contact area. Average pressures in the high pressure zones were found to significantly increase in wrists with a stage III instability compared with normal wrists. An increase in the intercentroid (scaphoid/lunate) distance was most evident with the wrist in 20 degrees extension, neutral radioulnar deviation, and 90 degrees supination. 相似文献
5.
Modulation of cytokine production from an EpiOcular corneal cell culture model in response to Staphylococcus aureus superantigen 总被引:3,自引:0,他引:3
A Thakur PhD A Clegg MSc A Chauhan MSc MDP Willcox PhD 《Clinical & experimental ophthalmology》1997,25(4):43-45
The present study investigated the hypothesis that Staphylococcus aureus enterotoxin B (SEE) produces epithelial cell death and releases inflammatory cytokines that produce stromal infiltration during contact lens induced peripheral ulceration. Epithelial cells were incubated with different doses of SEB for various time periods. Culture supernatants were assayed for cytokines IL- lo, IL-6 and chemotactic agents IL-8 and LTB,. SEE induced the production of IL- I p and IL-8. Epithelial cells exposed for longer periods (48 h) with low concentrations of SEB produced significantly higher levels (N0.02) of IL-Ip and IL-8 (P<0.05) compared t o a 24 h exposure. SEB did not induce the production o f IL-6 and 相似文献
6.
7.
8.
9.
10.