首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   20096篇
  免费   6476篇
  国内免费   88篇
耳鼻咽喉   337篇
儿科学   541篇
妇产科学   488篇
基础医学   619篇
口腔科学   1427篇
临床医学   6363篇
内科学   4919篇
皮肤病学   712篇
神经病学   2531篇
特种医学   646篇
外科学   2687篇
综合类   87篇
现状与发展   2篇
一般理论   19篇
预防医学   2785篇
眼科学   454篇
药学   424篇
中国医学   5篇
肿瘤学   1614篇
  2024年   218篇
  2023年   1295篇
  2022年   311篇
  2021年   682篇
  2020年   1129篇
  2019年   497篇
  2018年   1498篇
  2017年   1645篇
  2016年   1640篇
  2015年   1667篇
  2014年   1917篇
  2013年   1894篇
  2012年   775篇
  2011年   779篇
  2010年   1141篇
  2009年   1530篇
  2008年   649篇
  2007年   477篇
  2006年   568篇
  2005年   428篇
  2004年   388篇
  2003年   369篇
  2002年   313篇
  2001年   434篇
  2000年   293篇
  1999年   359篇
  1998年   342篇
  1997年   347篇
  1996年   333篇
  1995年   294篇
  1994年   191篇
  1993年   181篇
  1992年   211篇
  1991年   183篇
  1990年   156篇
  1989年   179篇
  1988年   140篇
  1987年   118篇
  1986年   110篇
  1985年   108篇
  1984年   74篇
  1983年   61篇
  1982年   54篇
  1981年   43篇
  1980年   40篇
  1979年   61篇
  1978年   56篇
  1977年   39篇
  1976年   38篇
  1974年   39篇
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
1.
2.
Although depression is associated to physical discomfort, meanings of the body in depression are rarely addressed in clinical research. Drawing on the concept of the lived body, this study explores depression as an embodied phenomenon. Using a hermeneutic phenomenological approach, the analysis of narrative‐based interviews with 11 depressed adults discloses a thematic structure of an embodied process of an ambiguous striving against fading. Five subthemes elicit different dimensions of this process, interpreted as disabling or enabling: feeling estranged, feeling confined, feeling burdensome, sensing life and seeking belongingness. In relation to clinical practice, we suggest that the interdisciplinary team can focus on enhancing the enabling dimensions, for example through guided physical activities to support the patient to feel more alive, capable and connected. Moreover, we suggest that the treatment process benefits from an increased awareness of the ambiguity in the patient's struggle, acknowledging both destructive and recharging elements of the withdrawing, and the perceived conflict in‐between.  相似文献   
3.
4.
5.
6.
7.
8.
Our objectives were to study the prevalence, risk factors for carriage, and transmission dynamics of extended-spectrum-β-lactamase (ESBL)-producing Enterobacteriaceae (ESBLPE) in a national survey of cattle. This was a point prevalence study conducted from July to October 2013 in Israel. Stool samples were collected from 1,226 cows in 123 sections on 40 farms of all production types. ESBLPE were identified in 291 samples (23.7%): 287 contained Escherichia coli and 4 contained Klebsiella pneumoniae. The number of ESBLPE-positive cows was the highest in quarantine stations and on fattening farms and was the lowest on pasture farms (P = 0.03). The number of ESBLPE-positive cows was the lowest in sections containing adult cows (age, >25 months) and highest in sections containing calves (age, <4 months) (P < 0.001). Infrastructure variables that were significant risk factors for ESBLPE carriage included crowding, a lack of manure cleaning, and a lack of a cooling (P < 0.001 for each), all of which were more common in sections containing calves. Antimicrobial prophylaxis was given almost exclusively to calves and was associated with a high number of ESBLPE carriers (P < 0.001). The 287 E. coli isolates were typed into 106 repetitive extragenic palindromic (REP)-PCR types and mostly harbored blaCTX-M-1 or blaCTX-M-9 group genes. The isolates on the six farms with ≥15 isolates of ESBLPE were of 4 to 7 different REP-PCR types, with one dominant type being harbored by about half of the isolates. Fourteen types were identified on more than one farm, with only six of the farms being adjacent to each other. The prevalence of ESBLPE carriage is high in calves in cowsheds where the use of antimicrobial prophylaxis is common. ESBLPE disseminate within cowsheds mainly by clonal spread, with limited intercowshed transmission occurring.  相似文献   
9.
10.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号