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   4670篇
  免费   463篇
  国内免费   82篇
耳鼻咽喉   45篇
儿科学   220篇
妇产科学   156篇
基础医学   581篇
口腔科学   66篇
临床医学   593篇
内科学   1309篇
皮肤病学   49篇
神经病学   216篇
特种医学   352篇
外国民族医学   1篇
外科学   849篇
综合类   65篇
一般理论   2篇
预防医学   240篇
眼科学   54篇
药学   184篇
肿瘤学   233篇
  2019年   47篇
  2018年   53篇
  2017年   66篇
  2016年   56篇
  2015年   49篇
  2014年   91篇
  2013年   129篇
  2012年   128篇
  2011年   138篇
  2010年   96篇
  2009年   94篇
  2008年   132篇
  2007年   185篇
  2006年   143篇
  2005年   177篇
  2004年   131篇
  2003年   121篇
  2002年   108篇
  2001年   130篇
  2000年   119篇
  1999年   114篇
  1998年   104篇
  1997年   103篇
  1996年   70篇
  1995年   87篇
  1994年   72篇
  1993年   62篇
  1992年   97篇
  1991年   98篇
  1990年   100篇
  1989年   124篇
  1988年   120篇
  1987年   90篇
  1986年   123篇
  1985年   135篇
  1984年   87篇
  1983年   89篇
  1982年   67篇
  1981年   56篇
  1980年   62篇
  1979年   69篇
  1978年   70篇
  1977年   62篇
  1976年   67篇
  1975年   75篇
  1974年   78篇
  1973年   67篇
  1972年   62篇
  1970年   47篇
  1967年   48篇
排序方式: 共有5215条查询结果,搜索用时 812 毫秒
101.
In this illustrative case, rheumatoid disease changed an active, self-supporting woman into a disabled, dependent and depressed person. When disease activity is continuous, early efforts to prevent severe deformity take on great urgency. It is also important to alleviate the psychosocial impact of the disease, which may well be more than even a highly motivated patient can handle alone.  相似文献   
102.
103.
104.
105.
106.
107.
Objective: To report implementation strategies and outcomes of an evidence-based asthma counseling intervention. The Head-off Environmental Asthma in Louisiana (HEAL) intervention integrated asthma counseling (AC) capacity and addressed challenges facing children with asthma in post-disaster New Orleans. Methods: The HEAL intervention enrolled 182 children (4–12 years) with moderate-to-severe persistent asthma. Recruitment occurred from schools in the Greater New Orleans area for one year. Participants received home environmental assessments and tailored asthma counseling sessions during the study period based on the National Cooperative Inner City Asthma Study and the Inner City Asthma Study. Primary (i.e., asthma symptoms) and secondary outcomes (i.e., healthcare utilization) were captured. During the study, changes were made to meet the demands of a post-hurricane and resource-poor environment which included changes to staffing, training, AC tools, and AC sessions. Results: After study changes were made, the AC visit rate increased by 92.3%. Significant improvements were observed across several adherence measures (e.g., running out of medications (p = 0.009), financial/insurance problems for appointments (p = 0.006), worried about medication side-effects (p = 0.01), felt medications did not work (p < 0.001)). Additionally, an increasing number of AC visits was modestly associated with a greater reduction in symptoms (test-for-trend p = 0.059). Conclusion: By adapting to the needs of the study population and setting, investigators successfully implemented a counseling intervention that improved participant behaviors and clinical outcomes. The strategies for implementing the AC intervention may serve as a guide for managing asthma and other chronic conditions in resource-poor settings.  相似文献   
108.
109.
110.
Aims. To examine the utility and validate the use of the Cardiac Depression Scale in patients who had first‐time coronary artery bypass graft surgery. Background. The Beck Depression Inventory, though frequently used, may not be sufficiently sensitive for use in cardiac patients. The Cardiac Depression Scale has been shown to identify the range of depression in medical cardiac patients. Design. Survey. Methods. The Beck Depression Inventory and Cardiac Depression Scale were administered to 120 men at hospital discharge, as well as six, 12 and 36 weeks postoperatively. Cronbach’s α scores were calculated for the measures at each point. Changes in scores over time were analysed using repeated measures analysis of variance. Associations between the measures scores were calculated using Pearson product–moment correlations. Agreement between the measures’ dichotomised scores (depression/no depression) was examined using Cohen’s Kappa statistic. Results. Internal consistency was similar for the Beck Depression Inventory (0·793–0·904) and Cardiac Depression Scale (0·859–0·910). Depression scores decreased over time with the Beck Depression Inventory [F(2·50, 175·29) = 22·27, p < 0·001] and Cardiac Depression Scale [F(2·68, 190·37) = 13·18, p < 0·001]. The measures had similar power [Cohen’s f = 0·65 (Beck Depression Inventory) and 0·43 (Cardiac Depression Scale)] to reveal changes over time. The continuous scores were highly correlated at each point [0·737 (p < 0·001)–0·819 (p < 0·001)]. However, when dichotomised scores were compared, the chance corrected level of agreement was less impressive [0·198 (p = 0·014)–0·381 (p < 0·001)]. Conclusions. The Cardiac Depression Scale may have utility for use with surgical cardiac patients. However, continued examination of this measure of depression is warranted. Relevance to clinical practice. Given the prevalence of depression and its negative impact on coronary artery disease, it is important to identify even mild depression in cardiac patients. Using a measure of depression specifically for cardiac patients, rather than a generic measure, may best accomplish this goal.  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