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   2231篇
  免费   509篇
耳鼻咽喉   2篇
儿科学   41篇
妇产科学   162篇
基础医学   2篇
口腔科学   3篇
临床医学   2083篇
内科学   87篇
神经病学   104篇
特种医学   2篇
外科学   30篇
预防医学   166篇
药学   12篇
肿瘤学   46篇
  2024年   7篇
  2023年   107篇
  2022年   8篇
  2021年   23篇
  2020年   113篇
  2019年   32篇
  2018年   106篇
  2017年   133篇
  2016年   149篇
  2015年   154篇
  2014年   150篇
  2013年   214篇
  2012年   52篇
  2011年   77篇
  2010年   146篇
  2009年   164篇
  2008年   95篇
  2007年   90篇
  2006年   87篇
  2005年   72篇
  2004年   66篇
  2003年   82篇
  2002年   56篇
  2001年   53篇
  2000年   21篇
  1999年   57篇
  1998年   72篇
  1997年   46篇
  1996年   62篇
  1995年   47篇
  1994年   40篇
  1993年   28篇
  1992年   20篇
  1991年   22篇
  1990年   24篇
  1989年   8篇
  1988年   10篇
  1987年   12篇
  1986年   9篇
  1985年   16篇
  1984年   3篇
  1983年   2篇
  1981年   3篇
  1979年   1篇
  1978年   1篇
排序方式: 共有2740条查询结果,搜索用时 15 毫秒
51.
52.
53.
54.
55.
56.
57.
58.
59.
Variables that have been conceptually linked with social vulnerability—income, educational level, employment, cessation of work to provide care, marital status, social support, and health—were used to predict four categories of reaction to caregiving in 159 daughters and daughters‐in‐law caring for their disabled aging parents. Social support, income, and health best predicted negative reactions to caregiving; social support alone best predicted feelings of family abandonment, impact on health, and impact on schedule. Compared with daughters and daughters‐in‐law who had not quit work to provide care, those who had quit work were significantly older, had lower incomes and fewer social supports, and were more involved in care. The results suggest that quitting work may be a precursor to social isolation that places the caregiver at increased risk for social vulnerability and negative reaction to caregiving. The implications of the findings for health care policy are discussed.  相似文献   
60.
Hypertension treatment regimens used by African American adults in the Jackson Heart Study were evaluated at the first two clinical examinations (2415 treated hypertensive persons at examination I [exam I], 2000–2004; 2577 at examination II [exam II], 2005–2008). Blood pressure (BP) was below 140/90 mm Hg for 66% and 70% of treated participants at exam I and exam II, respectively. The Seventh Report of the Joint National Committee on Prevention, Detection, Evaluation, and Treatment of High Blood Pressure treatment targets were met for 56% and 61% at exam I and exam II, respectively. Persons with diabetes or chronic kidney disease were less likely to have BP at target, as were men compared with women. Thiazide diuretics were the most commonly used antihypertensive medication, and persons taking a thiazide were more likely to have their BP controlled than persons not taking them; thiazides were used significantly less among men than women. Although calcium channel blockers are often considered to be effective monotherapy for African Americans, persons using calcium channel blocker monotherapy were significantly less likely to be at target BP than persons using thiazide monotherapy.  相似文献   
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