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   130711篇
  免费   31561篇
  国内免费   1154篇
耳鼻咽喉   2775篇
儿科学   3401篇
妇产科学   2729篇
基础医学   6651篇
口腔科学   5731篇
临床医学   28817篇
内科学   31387篇
皮肤病学   3719篇
神经病学   15806篇
特种医学   4866篇
外国民族医学   3篇
外科学   23067篇
综合类   836篇
现状与发展   40篇
一般理论   70篇
预防医学   16235篇
眼科学   2788篇
药学   3228篇
中国医学   30篇
肿瘤学   11247篇
  2024年   747篇
  2023年   5100篇
  2022年   1261篇
  2021年   3170篇
  2020年   5543篇
  2019年   2440篇
  2018年   7457篇
  2017年   7707篇
  2016年   8319篇
  2015年   8464篇
  2014年   11174篇
  2013年   13358篇
  2012年   5802篇
  2011年   5706篇
  2010年   7952篇
  2009年   10132篇
  2008年   5593篇
  2007年   4660篇
  2006年   5791篇
  2005年   4511篇
  2004年   3675篇
  2003年   3223篇
  2002年   3147篇
  2001年   2214篇
  2000年   1478篇
  1999年   2086篇
  1998年   2519篇
  1997年   2325篇
  1996年   2327篇
  1995年   2065篇
  1994年   1403篇
  1993年   1199篇
  1992年   1022篇
  1991年   946篇
  1990年   796篇
  1989年   759篇
  1988年   718篇
  1987年   615篇
  1986年   552篇
  1985年   503篇
  1984年   514篇
  1983年   552篇
  1982年   528篇
  1981年   501篇
  1980年   384篇
  1979年   232篇
  1978年   303篇
  1977年   244篇
  1976年   229篇
  1974年   197篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
101.
A significant number of patients undergoing lumbar spine surgery do not obtain pain relief. Such patients with chronic low back or lower extremity pain may be difficult to treat. A frequent component of therapy is the use of spinal cord stimulation to help control pain. With careful patient selection, many patients can achieve reasonable levels of pain relief. We review recent clinical reports, including prospective and randomized studies, that demonstrate up to three quarters of patients implanted with a spinal cord stimulator for the treatment of failed back surgery syndrome may benefit from its use. This technology must not be indiscriminately applied. Careful patient selection and a period of trial stimulation are vital to the successful use of spinal cord stimulation as treatment for chronic pain.  相似文献   
102.
103.
104.
The paper presents the results of a pilot study which involved 50 nurses from several departments of internal medicine of The State Clinical Hospital of the Collegium Medicum, Jagiellonian University in Cracow. The results are based on the Statement Response Questionnaire. They show that the most common responses of the nurses in the face of anxiety expressed by patients are cheering up the patient, collecting information about the symptom, and offering explanation of the symptom. The least common responses included expressing one's own positive emotions and showing empathy towards the patient.  相似文献   
105.
106.
Examined are several measures currently used in the assessment of child abuse, sexual abuse, and trauma. These measures include structured clinical interviews, self report measures, screening inventory, symptom checklist, and some measures that include decision making properties. Issues and implications for clinical practice are explored.  相似文献   
107.
108.
Advancing age is associated with a remarkable number of changes in body composition, including reduction in lean body mass and increase in body fat, which have been well documented. Decreased lean body mass occurs primarily as a result of losses in skeletal muscle mass. This age-related loss in muscle mass has been termed “sarcopenia”. Loss in muscle mass accounts for the age-associated decreases in basal metabolic rate, muscle strength, and activity levels, which, in turn are the cause of the decreased energy requirements of the elderly. In sedentary persons, the main determinant of energy expenditure is fat-free mass, which declines by about 15% between the third and eighth decade of life. It also appears that declining energy needs are not matched by an appropriate decline in energy intake, with the ultimate result being increased body fat content. Increased body fatness and increased abdominal obesity are thought to be directly linked to the greatly increased incidence of non-insulin-dependent diabetes mellitus among the elderly. In this review we will discuss the extent to which regularly performed exercise can affect nutrition needs and functional capacity in the elderly. We will also discuss a variety of concerns when prescribing exercise in the elderly, such as planning for a wide variability in functional status, medical status, and training intensity and duration. Finally, we will attempt to provide some basic guidelines for beginning an exercise program for older men and women and establishing community-based programs.  相似文献   
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