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   1336733篇
  免费   94050篇
  国内免费   2905篇
耳鼻咽喉   19730篇
儿科学   40284篇
妇产科学   38667篇
基础医学   187294篇
口腔科学   39818篇
临床医学   112685篇
内科学   262489篇
皮肤病学   30215篇
神经病学   106442篇
特种医学   53678篇
外国民族医学   435篇
外科学   208286篇
综合类   31047篇
现状与发展   6篇
一般理论   442篇
预防医学   92076篇
眼科学   31360篇
药学   100078篇
  4篇
中国医学   2987篇
肿瘤学   75665篇
  2018年   11749篇
  2015年   11877篇
  2014年   16694篇
  2013年   25250篇
  2012年   33019篇
  2011年   34886篇
  2010年   20751篇
  2009年   20244篇
  2008年   33598篇
  2007年   36708篇
  2006年   37292篇
  2005年   36030篇
  2004年   35106篇
  2003年   34087篇
  2002年   33610篇
  2001年   63632篇
  2000年   65352篇
  1999年   55405篇
  1998年   14660篇
  1997年   13471篇
  1996年   12945篇
  1995年   12226篇
  1994年   11469篇
  1992年   42770篇
  1991年   41288篇
  1990年   40564篇
  1989年   39561篇
  1988年   36973篇
  1987年   36413篇
  1986年   34912篇
  1985年   33112篇
  1984年   24831篇
  1983年   21062篇
  1982年   12671篇
  1981年   11574篇
  1980年   10773篇
  1979年   23930篇
  1978年   17071篇
  1977年   14838篇
  1976年   13386篇
  1975年   15269篇
  1974年   18080篇
  1973年   17565篇
  1972年   16816篇
  1971年   15722篇
  1970年   14916篇
  1969年   14347篇
  1968年   13465篇
  1967年   12016篇
  1966年   11263篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
71.
The special interest group on sensitive skin of the International Forum for the Study of Itch previously defined sensitive skin as a syndrome defined by the occurrence of unpleasant sensations (stinging, burning, pain, pruritus and tingling sensations) in response to stimuli that normally should not provoke such sensations. This additional paper focuses on the pathophysiology and the management of sensitive skin. Sensitive skin is not an immunological disorder but is related to alterations of the skin nervous system. Skin barrier abnormalities are frequently associated, but there is no cause and direct relationship. Further studies are needed to better understand the pathophysiology of sensitive skin – as well as the inducing factors. Avoidance of possible triggering factors and the use of well-tolerated cosmetics, especially those containing inhibitors of unpleasant sensations, might be suggested for patients with sensitive skin. The role of psychosocial factors, such as stress or negative expectations, might be relevant for subgroups of patients. To date, there is no clinical trial supporting the use of topical or systemic drugs in sensitive skin. The published data are not sufficient to reach a consensus on sensitive skin management. In general, patients with sensitive skin require a personalized approach, taking into account various biomedical, neural and psychosocial factors affecting sensitive skin.  相似文献   
72.
73.
74.
Maternal and Child Health Journal - Background Prenatal substance use screening is recommended. The 4 P’s Plus screener includes questions on perceived problematic substance use in parents...  相似文献   
75.
76.
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   
77.
ABSTRACT

A monocausal bacteriological understanding of infectious disease orients tuberculosis control efforts towards antimicrobial interventions. A bias towards technological solutions can leave multistranded public health and social interventions largely neglected. In the context of globalising biomedical approaches to infectious disease control, this ethnography-inspired review article reflects upon the implementation of rapid diagnostic technology in low- and middle-income countries. Fieldwork observations in Vietnam provided a stimulus for a critical review of the global rollout of tuberculosis diagnostic technology. To address local needs in tuberculosis control, health managers in resource-poor settings are readily cooperating with international donors to deploy novel diagnostic technologies throughout national tuberculosis programme facilities. Increasing investment in new diagnostic technologies is predicated on the supposition that these interventions will ameliorate disease outcomes. However, suboptimal treatment control persists even when accurate diagnostic technologies are available, suggesting that promotion of singular technological solutions can distract from addressing systemic change, without which disease susceptibility, propagation of infection, detection gaps, diagnostic delays, and treatment shortfalls persist.  相似文献   
78.
79.
80.
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