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   972篇
  免费   58篇
  国内免费   1篇
耳鼻咽喉   18篇
儿科学   42篇
妇产科学   16篇
基础医学   111篇
口腔科学   11篇
临床医学   109篇
内科学   180篇
皮肤病学   10篇
神经病学   55篇
特种医学   194篇
外科学   106篇
综合类   18篇
预防医学   56篇
眼科学   4篇
药学   59篇
  1篇
中国医学   1篇
肿瘤学   40篇
  2022年   8篇
  2021年   14篇
  2019年   10篇
  2018年   11篇
  2017年   7篇
  2016年   21篇
  2015年   17篇
  2014年   16篇
  2013年   28篇
  2012年   42篇
  2011年   48篇
  2010年   23篇
  2009年   22篇
  2008年   29篇
  2007年   32篇
  2006年   40篇
  2005年   34篇
  2004年   27篇
  2003年   31篇
  2002年   21篇
  2001年   25篇
  2000年   13篇
  1999年   21篇
  1998年   21篇
  1997年   29篇
  1996年   29篇
  1995年   24篇
  1994年   19篇
  1993年   14篇
  1992年   24篇
  1991年   13篇
  1990年   12篇
  1989年   19篇
  1988年   28篇
  1987年   26篇
  1986年   23篇
  1985年   24篇
  1984年   9篇
  1983年   8篇
  1981年   12篇
  1980年   8篇
  1979年   8篇
  1978年   16篇
  1976年   9篇
  1973年   7篇
  1972年   6篇
  1971年   7篇
  1970年   7篇
  1969年   6篇
  1967年   8篇
排序方式: 共有1031条查询结果,搜索用时 31 毫秒
1.
2.
The authors investigated whether graduating students' specialty choices were influenced by favorable faculty evaluations and mini-Board scores during their third-year clerkships, and if so, whether the influences were gender-specific. Data were collected from a total of 53 students in two classes, 1988-89 and 1988-90. Univariate and multivariate tests were performed, and the results were analyzed between each class group and between genders in both groups. These results also were compared with information about the students gathered before they matriculated. In general, the results showed a gender-specific correlation: for each rotation where the women's faculty evaluations were significantly higher than the men's, the women subsequently outnumbered the men in choosing that rotation's specialty. Conversely, for each rotation where the men's mini-Board scores were significantly higher than the women's, the men outnumbered the women in choosing that rotation's specialty. The most notable difference was in pediatrics: 8% of the women had indicated an interest in that specialty on the prematriculation questionnaire, while almost one-third of the women in the classes of 1990 and 1991 chose pediatrics residencies. These findings suggest that the favorable scores and evaluations may be one of the influences for students' specialty choices, and that their influence may be gender-specific.  相似文献   
3.
Compliance with screening mammography. Survey of primary care physicians   总被引:1,自引:0,他引:1  
A survey of primary care physicians in the greater Tampa Bay metropolitan area was conducted to determine compliance with screening mammography and associated physician characteristics. Information requested included their age, sex, specialty, and board certification status, and the ages and frequencies that they recommend screening mammography for their patients. A total of 565 physicians responded. Even though 88% indicated they follow American Cancer Society recommendations when advising screening mammography, only 62% were actually in full compliance. A significantly greater percentage of obstetricians/gynecologists were compliant (74%) compared to other specialties (family practice, 57%, p = .006; internal medicine, 56%, p = .007; general practice, 53%, p = .003). Women physicians were more likely to be compliant than men (83% versus 58%, p less than .001), and younger physicians more likely than older physicians (72% versus 49%, p less than .001). There was no significant difference in compliance rates between board certified and noncertified physicians.  相似文献   
4.
Solitary bronchioloalveolar carcinoma: CT criteria   总被引:14,自引:0,他引:14  
The computed tomographic (CT) scans of 30 patients with solitary bronchioloalveolar carcinoma were reviewed. Common features at CT included the peripheral or subpleural location of a pulmonary mass (25 cases), pseudocavitation (18 cases), heterogeneous attenuation (17 cases), irregular margins forming a star pattern (22 cases), and pleural tags (21 cases). Using these CT criteria, four independent observers attempted to identify cases of bronchioloalveolar carcinoma from a larger sample of lung cancers and benign lesions by categorizing a series of test cases into four probability categories. Although the bronchioloalveolar carcinomas were correctly ranked in the two highest probability categories 75% of the time (in 45 of 60 cases), there was considerable overlap with other lung lesions, particularly with adenocarcinoma and large cell undifferentiated carcinoma. However, even though the typical features of bronchioloalveolar carcinoma are not invariable or highly specific, they are characteristic enough to suggest the diagnosis.  相似文献   
5.
6.
7.
8.
9.
Narrative and procedural discourse in temporal lobe epilepsy.   总被引:2,自引:0,他引:2  
It is well established that some individuals with temporal lobe epilepsy (TLE) demonstrate language deficits at the single word level. However, discourse production rarely has been examined quantitatively within this group. This study compared adult TLE patients with an early seizure onset (< or = age 14 years, n = 27) to a control group (n = 28) on narrative and procedural discourse tasks. As a group, the TLE patients performed normally on the procedural discourse task, but differed significantly from the controls on several narrative discourse variables. At the individual level, 30% of the TLE patients versus 4% of the controls demonstrated impaired discourse ability (p and 0.01). Within this early onset TLE group, discourse performance was not associated with demographic or seizure history variables. Considering the cognitive domain, discourse performance correlated significantly with working memory. In summary, mild discourse dysfunction was present in a significant minority of early onset TLE patients, but this deficit was not closely associated with other language measures. Discourse ability and its neuropsychological, neuroanatomical and conversational speech correlates deserve further study in TLE patients.  相似文献   
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