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   1317010篇
  免费   99748篇
  国内免费   1680篇
耳鼻咽喉   16762篇
儿科学   42720篇
妇产科学   36284篇
基础医学   196321篇
口腔科学   35867篇
临床医学   124802篇
内科学   257521篇
皮肤病学   28241篇
神经病学   106497篇
特种医学   48544篇
外国民族医学   266篇
外科学   184949篇
综合类   26866篇
现状与发展   3篇
一般理论   620篇
预防医学   111458篇
眼科学   29020篇
药学   96645篇
  6篇
中国医学   2075篇
肿瘤学   72971篇
  2019年   11136篇
  2018年   14750篇
  2017年   11283篇
  2016年   12304篇
  2015年   14162篇
  2014年   19464篇
  2013年   29651篇
  2012年   40733篇
  2011年   43261篇
  2010年   24805篇
  2009年   23903篇
  2008年   40496篇
  2007年   43358篇
  2006年   42725篇
  2005年   41677篇
  2004年   39883篇
  2003年   38124篇
  2002年   36900篇
  2001年   57258篇
  2000年   58196篇
  1999年   49298篇
  1998年   14018篇
  1997年   12662篇
  1996年   13064篇
  1995年   12341篇
  1994年   11491篇
  1993年   10816篇
  1992年   39132篇
  1991年   38513篇
  1990年   37279篇
  1989年   36045篇
  1988年   33429篇
  1987年   32774篇
  1986年   31284篇
  1985年   29492篇
  1984年   22546篇
  1983年   19675篇
  1982年   11700篇
  1979年   21410篇
  1978年   15779篇
  1977年   13087篇
  1976年   12151篇
  1975年   13065篇
  1974年   15928篇
  1973年   15665篇
  1972年   14795篇
  1971年   13825篇
  1970年   13034篇
  1969年   12334篇
  1968年   11449篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
61.
62.
Patients have become increasingly well informed with higher expectations to be involved in decision-making processes regarding their care and treatment. However, few studies have examined the impact of patient involvement on health care providers’ partnership-building communication. The aim of this study was to measure and explore the self-reported effects of patient involvement on the work of physicians and nurses. A questionnaire survey was distributed among cardiology staff in 12 Swedish hospitals (N = 488, response rate 67%). The sample was comprised of registered nurses (RNs, n = 303), licensed practical nurses (LPNs, n = 132), and physicians (MDs, n = 53). Confirmatory factor analysis was used to examine seven questionnaire statements concerning implications of patient involvement for one’s clinical work. Regression analyses were used to examine factors associated with staff’s partnership-building communication. Analysis confirmed two distinct factors accounting for 57% of the total variance, representing both negative—“Hassles”and positive—“Uplifts”aspects of patient involvement. Regression analyses revealed that only positive aspects (i.e., uplifts) of patient involvement predicted staff behavior aimed at involving patients. Working with actively involved patients may be a source of stress, both negative and positive, for health care professionals. By developing work routines for involving patients in their care, health care workplaces may help health care professionals to buffer the negative effects, and enhance the positive effects, of that stress.  相似文献   
63.
We evaluated RNA stability of Ebola virus in EDTA blood and urine samples collected from infected patients and stored in West Africa’s environmental conditions. In blood, RNA was stable for at least 18 days when initial cycle threshold values were <30, but in urine, RNA degradation occurred more quickly.  相似文献   
64.
65.
66.
67.
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   
68.
69.
70.
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