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   1599817篇
  免费   133560篇
  国内免费   2577篇
耳鼻咽喉   21646篇
儿科学   52934篇
妇产科学   46229篇
基础医学   227784篇
口腔科学   47198篇
临床医学   140926篇
内科学   314839篇
皮肤病学   34091篇
神经病学   130115篇
特种医学   64732篇
外国民族医学   474篇
外科学   243836篇
综合类   39711篇
现状与发展   3篇
一般理论   544篇
预防医学   122872篇
眼科学   36477篇
药学   121256篇
  3篇
中国医学   2974篇
肿瘤学   87310篇
  2018年   14770篇
  2016年   12905篇
  2015年   15029篇
  2014年   20655篇
  2013年   31356篇
  2012年   42565篇
  2011年   44768篇
  2010年   26350篇
  2009年   25308篇
  2008年   43018篇
  2007年   45252篇
  2006年   46061篇
  2005年   44680篇
  2004年   44096篇
  2003年   42190篇
  2002年   41302篇
  2001年   75688篇
  2000年   78336篇
  1999年   66389篇
  1998年   17733篇
  1997年   16334篇
  1996年   16316篇
  1995年   16020篇
  1994年   15074篇
  1993年   14217篇
  1992年   55427篇
  1991年   53780篇
  1990年   52563篇
  1989年   50834篇
  1988年   47223篇
  1987年   46562篇
  1986年   44284篇
  1985年   42844篇
  1984年   32033篇
  1983年   27565篇
  1982年   16147篇
  1981年   14439篇
  1980年   13564篇
  1979年   30462篇
  1978年   21064篇
  1977年   17765篇
  1976年   16695篇
  1975年   17575篇
  1974年   21486篇
  1973年   20672篇
  1972年   18854篇
  1971年   17770篇
  1970年   16290篇
  1969年   15269篇
  1968年   13949篇
排序方式: 共有10000条查询结果,搜索用时 342 毫秒
171.
172.
173.
174.
Die Ophthalmologie - Die Filtrationsverfahren sind im Gegensatz zu allen anderen Glaukomoperationen mit einer biomikroskopisch sichtbaren Wundheilung assoziiert, sodass eine Vielzahl von...  相似文献   
175.
176.
177.
178.
ABSTRACT

Objectives: The present study investigated the relationships of enculturation and depressive symptoms with health risk behavior engagement in Mexican-American college students and examined how these relationships differed by gender. Previous research has noted consistent gender differences in health risk behavior (e.g. alcohol use, substance use, and risky sexual behavior) among Latina/os, and emphasized the role of U.S. acculturation in this difference. Research examining the role of heritage cultural retention (i.e. enculturation), and including the added influence of mental health variables, such as depressive symptoms, is currently lacking. This study sought to address this gap.

Design: A large sample (N?=?677) of Mexican-American college students from four universities (located in New York, California, Florida, and Texas) completed an online questionnaire assessing health risk behaviors and corresponding variables.

Results: We found that males who endorsed more behavioral enculturation and depressive symptoms were more likely to engage in health risk behavior than all others in the sample. Contrary to previous literature, no relationship was found between behavioral enculturation and health risk behavior in females.

Conclusion: The current study found behavioral enculturation to be associated with depressive symptoms, and in turn with health risk behaviors among the males in our sample. Additional research will be needed to identify the mechanism underlying the relationship between enculturation and depressive symptoms as well as between depressive symptoms and risky behavior.  相似文献   
179.
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   
180.
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