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   3538078篇
  免费   290175篇
  国内免费   14488篇
耳鼻咽喉   48144篇
儿科学   108932篇
妇产科学   87988篇
基础医学   553156篇
口腔科学   93196篇
临床医学   326365篇
内科学   624633篇
皮肤病学   96895篇
神经病学   303102篇
特种医学   138651篇
外国民族医学   247篇
外科学   551649篇
综合类   103118篇
现状与发展   91篇
一般理论   2465篇
预防医学   291191篇
眼科学   82409篇
药学   245584篇
  30篇
中国医学   10322篇
肿瘤学   174573篇
  2021年   57811篇
  2020年   38486篇
  2019年   60232篇
  2018年   76301篇
  2017年   58910篇
  2016年   65151篇
  2015年   79070篇
  2014年   116609篇
  2013年   182461篇
  2012年   105602篇
  2011年   106646篇
  2010年   125135篇
  2009年   129570篇
  2008年   91573篇
  2007年   94728篇
  2006年   105914篇
  2005年   99914篇
  2004年   100481篇
  2003年   90381篇
  2002年   79292篇
  2001年   109394篇
  2000年   101770篇
  1999年   100774篇
  1998年   67238篇
  1997年   64597篇
  1996年   61931篇
  1995年   57345篇
  1994年   50942篇
  1993年   47473篇
  1992年   68904篇
  1991年   65239篇
  1990年   62190篇
  1989年   61291篇
  1988年   56218篇
  1987年   54712篇
  1986年   51910篇
  1985年   51572篇
  1984年   47205篇
  1983年   43122篇
  1982年   41159篇
  1981年   38730篇
  1980年   36645篇
  1979年   38034篇
  1978年   33681篇
  1977年   31612篇
  1976年   28387篇
  1975年   27248篇
  1974年   27462篇
  1973年   26410篇
  1972年   24799篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
61.
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   
62.
Abstract

This study is a single-center, retrospective analysis of postmenopausal women presenting with dyspareunia and vulvar pain, aiming to evaluate relative effectiveness of vestibular CO2 laser therapy as a treatment. Three monthly sessions of laser were performed to each patient and thereafter a three-months follow-up was stablished. A total number of 72 patients undergoing vestibular laser treatment were recruited from patient files in the period between 2016 and 2018. Among these, 39 women also received a concomitant treatment with ospemifene (60?mg/day) during the study period. There was a statistically significant reduction of all the symptoms in both groups up to the three month follow-up. Regarding dryness and dyspareunia, the relief tent to be more prominent in the ospemifene?+?laser group at all follow-ups and remained statistically significant at three-month follow-up. Specifically, vestibular dryness was significantly lower in the ospemifene?+?laser group compared with the laser treatment group (?87% vs???34%, respectively), and the vestibular health score started declining faster in the ospemifene?+?laser group. Although, additional research is needed to understand the mechanism of action, our data shows that a combination regimen of laser and ospemifene may improve clinical effectiveness for long-term treatment of symptoms associated with the under-recognized genitourinary syndrome of menopause.  相似文献   
63.
64.
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   
65.
66.
67.
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