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   1074篇
  免费   42篇
  国内免费   37篇
耳鼻咽喉   4篇
儿科学   36篇
妇产科学   28篇
基础医学   59篇
口腔科学   34篇
临床医学   477篇
内科学   125篇
皮肤病学   6篇
神经病学   46篇
特种医学   125篇
外科学   34篇
综合类   27篇
预防医学   48篇
眼科学   7篇
药学   44篇
肿瘤学   53篇
  2023年   5篇
  2021年   3篇
  2020年   4篇
  2019年   5篇
  2018年   16篇
  2017年   4篇
  2016年   8篇
  2015年   17篇
  2014年   17篇
  2013年   38篇
  2012年   15篇
  2011年   7篇
  2010年   27篇
  2009年   40篇
  2008年   22篇
  2007年   30篇
  2006年   22篇
  2005年   19篇
  2004年   24篇
  2003年   22篇
  2002年   28篇
  2001年   38篇
  2000年   25篇
  1999年   37篇
  1998年   92篇
  1997年   86篇
  1996年   80篇
  1995年   67篇
  1994年   51篇
  1993年   56篇
  1992年   25篇
  1991年   27篇
  1990年   28篇
  1989年   25篇
  1988年   36篇
  1987年   12篇
  1986年   16篇
  1985年   12篇
  1984年   13篇
  1983年   8篇
  1982年   9篇
  1981年   6篇
  1980年   7篇
  1979年   6篇
  1978年   4篇
  1977年   3篇
  1976年   3篇
  1971年   2篇
  1962年   1篇
  1958年   2篇
排序方式: 共有1153条查询结果,搜索用时 15 毫秒
61.
Ultrasonography of liver. Technique and focal and diffuse disease   总被引:1,自引:0,他引:1  
Because of its widespread use and availability, ultrasonography is frequently the first test used to assess patients with focal or diffuse hepatic disease. While ultrasonographic features of hepatic lesions often do not allow for a specific diagnosis, this article demonstrates typical ultrasonographic features of commonly encountered disease entities as an aid to differential diagnosis. Recent advances, including Doppler and intraoperative ultrasonography also are discussed.  相似文献   
62.
63.
64.
65.
Little attention has been given to the preparation of the patient's family prior to surgery, even though nurses' clinical experience suggests that family members are often more anxious than the patient. This study explored the knowledge and anxiety of spouses and significant others of patients preparing for cardiac surgery. The subjects were selected by convenience from a preoperative class offered at the hospital where surgery was to occur. Before and after the class, the subjects completed a cardiac-surgery knowledge test and an anxiety test. The significant others were significantly more anxious than the patients prior to the class. The anxiety level of significant others was significantly reduced after the class. There were no statistically significant differences between patients and significant others on the cardiac-surgery knowledge test. These results suggest that significant others may benefit from preoperative instruction.  相似文献   
66.
67.
68.
TOPIC: Questions regarding how severely traumatized children may meet diagnostic criteria for an accurate diagnosis of posttraumatic stress disorder (PTSD), the comorbidity of PTSD with many other psychiatric illnesses, and the possibility that PTSD is not a valid diagnostic formulation as it has been applied to children and adolescents demonstrate that the currently held concept of PTSD may not be operationally sound. PURPOSE: To explore recent empirical studies to demonstrate the current state of controversy and postulate future direction of the conceptual framework. SOURCES: Selected published literature. CONCLUSIONS: PTSD in children and adolescents, as it is popularly understood as a conceptual framework, is found to be undergoing a conceptual metamorphosis.  相似文献   
69.
TOPIC: The psychosocialfactors that affect adolescents with sickle cell disease (SCD). PURPOSE: To explore whether specific psychosocial factors can provide clues to the future adjustment of this population. SOURCES: Ovid Web, Medline, Psychinfo, and CINAHL databases for the years 1997 to 2001. CONCLUSIONS: Promoting effective psychosocial functioning is as important as managing the medical aspects of SCD, yet this is an area of care that is commonly overlooked. Nurses, therefore, have an opportunity to have a significant impact on the lives of adolescents with SCD if they intervene in ways to promote both biological and psychosocial adjustment.  相似文献   
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