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   1336031篇
  免费   99906篇
  国内免费   4269篇
耳鼻咽喉   16801篇
儿科学   43617篇
妇产科学   36388篇
基础医学   197873篇
口腔科学   35910篇
临床医学   129583篇
内科学   258198篇
皮肤病学   26376篇
神经病学   111914篇
特种医学   48196篇
外国民族医学   366篇
外科学   184118篇
综合类   28792篇
现状与发展   1篇
一般理论   460篇
预防医学   114372篇
眼科学   28986篇
药学   98840篇
  6篇
中国医学   3169篇
肿瘤学   76240篇
  2021年   10899篇
  2019年   11642篇
  2018年   16328篇
  2017年   12299篇
  2016年   13255篇
  2015年   15202篇
  2014年   20806篇
  2013年   32071篇
  2012年   44272篇
  2011年   46911篇
  2010年   27089篇
  2009年   24946篇
  2008年   42743篇
  2007年   45078篇
  2006年   45196篇
  2005年   43603篇
  2004年   41593篇
  2003年   39519篇
  2002年   38329篇
  2001年   60865篇
  2000年   62539篇
  1999年   52293篇
  1998年   14584篇
  1997年   13279篇
  1996年   13121篇
  1995年   12460篇
  1994年   11630篇
  1993年   10921篇
  1992年   41573篇
  1991年   40761篇
  1990年   39452篇
  1989年   37350篇
  1988年   34586篇
  1987年   33701篇
  1986年   32156篇
  1985年   30646篇
  1984年   23040篇
  1983年   19596篇
  1982年   11757篇
  1979年   20811篇
  1978年   14815篇
  1977年   12065篇
  1976年   11879篇
  1975年   12110篇
  1974年   14803篇
  1973年   14475篇
  1972年   13357篇
  1971年   12421篇
  1970年   11487篇
  1969年   10410篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
101.
102.
103.
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   
104.
105.
Inbred mouse strains are the most widely used mammalian model organism in biomedical research owing to ease of genetic manipulation and short lifespan; however, each inbred strain possesses a unique repertoire of deleterious homozygous alleles that can make a specific strain more susceptible to a particular disease. In the current study, we report dystrophic cardiac calcinosis (DCC) in C.B‐17 SCID male mice at 10 weeks of age with no significant change in cardiac function. Acquisition of DCC was characterized by myocardial injury, fibrosis, calcification, and necrosis of the tissue. At 10 weeks of age, 38% of the C.B‐17 SCID mice from two different commercial colonies exhibited significant calcinosis on the ventricular epicardium, predominantly on the right ventricle. The frequency of calcinosis was more than 50% for mice obtained from Taconic's Cambridge City colony and 25% for mice obtained from Taconic's German Town colony. Interestingly, the DCC phenotype did not affect cardiac function at 10 weeks of age. No differences in echocardiography or electrocardiography were observed between the calcinotic and non‐calcinotic mice from either colony. Our findings suggest that C.B‐17 SCID mice exhibit DCC as early as 10 weeks of age with no significant impact on cardiac function. This strain of mice should be cautiously considered for the study of cardiac physiology.  相似文献   
106.
107.
108.
109.
110.
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