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   17749篇
  免费   5643篇
  国内免费   36篇
耳鼻咽喉   535篇
儿科学   541篇
妇产科学   707篇
基础医学   311篇
口腔科学   1101篇
临床医学   3646篇
内科学   6347篇
皮肤病学   386篇
神经病学   892篇
特种医学   275篇
外科学   1928篇
综合类   23篇
现状与发展   2篇
一般理论   4篇
预防医学   3548篇
眼科学   242篇
药学   296篇
肿瘤学   2644篇
  2024年   164篇
  2023年   1082篇
  2022年   419篇
  2021年   807篇
  2020年   1276篇
  2019年   528篇
  2018年   1232篇
  2017年   1293篇
  2016年   1486篇
  2015年   1432篇
  2014年   2031篇
  2013年   2216篇
  2012年   758篇
  2011年   675篇
  2010年   1127篇
  2009年   1526篇
  2008年   600篇
  2007年   386篇
  2006年   681篇
  2005年   301篇
  2004年   234篇
  2003年   155篇
  2002年   131篇
  2001年   264篇
  2000年   230篇
  1999年   241篇
  1998年   320篇
  1997年   246篇
  1996年   233篇
  1995年   191篇
  1994年   149篇
  1993年   109篇
  1992年   110篇
  1991年   92篇
  1990年   106篇
  1989年   86篇
  1988年   69篇
  1987年   50篇
  1986年   58篇
  1985年   50篇
  1984年   43篇
  1983年   42篇
  1982年   15篇
  1980年   19篇
  1979年   14篇
  1978年   14篇
  1977年   19篇
  1975年   18篇
  1974年   13篇
  1972年   17篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
11.
A 17‐year‐old boy presented with recurring severe dermatitis of the face of 5‐months duration that resembled impetigo. He had been treated with several courses of antibiotics without improvement. Biopsy showed changes consistent with allergic contact dermatitis and patch testing later revealed sensitization to benzoyl peroxide, which the patient had been using for the treatment of acne vulgaris.  相似文献   
12.
13.
14.
15.
16.

Objective

To examine the experience of interracial anxiety among health professionals and how it may affect the quality of their interactions with patients from racially marginalized populations. We explored the influence of prior interracial exposure—specifically through childhood neighborhoods, college student bodies, and friend groups—on interracial anxiety among medical students and residents. We also examined whether levels of interracial anxiety change from medical school through residency.

Data Source

Web-based longitudinal survey data from the Medical Student Cognitive Habits and Growth Evaluation Study.

Study Design

We used a retrospective longitudinal design with four observations for each trainee. The study population consisted of non-Black US medical trainees surveyed in their 1st and 4th years of medical school and 2nd and 3rd years of residency. Mixed effects longitudinal models were used to assess predictors of interracial anxiety and assess changes in interracial anxiety scores over time.

Principal Findings

In total, 3155 non-Black medical trainees were followed for 7 years. Seventy-eight percent grew up in predominantly White neighborhoods. Living in predominantly White neighborhoods and having less racially diverse friends were associated with higher levels of interracial anxiety among medical trainees. Trainees' interracial anxiety scores did not substantially change over time; interracial anxiety was highest in the 1st year of medical school, lowest in the 4th year, and increased slightly during residency.

Conclusions

Neighborhood and friend group composition had independent effects on interracial anxiety, indicating that premedical racial socialization may affect medical trainees' preparedness to interact effectively with diverse patient populations. Additionally, the lack of substantial change in interracial anxiety throughout medical training suggests the importance of providing curricular tools and structure (e.g., instituting interracial cooperative learning activities) to foster the development of healthy interracial relationships.  相似文献   
17.
18.
19.
ABSTRACT

Abortion is legal in South Africa, but negative abortion attitudes remain common and are poorly understood. We used nationally representative South African Social Attitudes Survey data to analyze abortion attitudes in the case of fetal anomaly and in the case of poverty from 2007 to 2016 (n = 20,711; ages = 16+). We measured correlations between abortion attitudes and these important predictors: religiosity, attitudes about premarital sex, attitudes about preferential hiring and promotion of women, and attitudes toward family gender roles. Abortion acceptability for poverty increased over time (b = 0.05, p < .001), but not for fetal anomaly (b = ?0.008, p = .284). Highly religious South Africans reported lower abortion acceptability in both cases (Odds Ratio (OR)anomaly = 0.85, p = .015; ORpoverty = 0.84, p = .02). Premarital sex acceptability strongly and positively predicted abortion acceptability (ORanomaly = 2.63, p < .001; ORpoverty = 2.46, p < .001). Attitudes about preferential hiring and promotion of women were not associated with abortion attitudes, but favorable attitudes about working mothers were positively associated with abortion acceptability for fetal anomaly ((ORanomaly = 1.09, p = .01; ORpoverty = 1.02, p = .641)). Results suggest negative abortion attitudes remain common in South Africa and are closely tied to religiosity, traditional ideologies about sexuality, and gender role expectations about motherhood.  相似文献   
20.
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