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   102323篇
  免费   29527篇
  国内免费   1088篇
耳鼻咽喉   2409篇
儿科学   2720篇
妇产科学   2374篇
基础医学   3683篇
口腔科学   5227篇
临床医学   26192篇
内科学   25399篇
皮肤病学   3501篇
神经病学   12897篇
特种医学   3754篇
外科学   18051篇
综合类   138篇
现状与发展   40篇
一般理论   6篇
预防医学   13494篇
眼科学   2196篇
药学   1364篇
中国医学   24篇
肿瘤学   9469篇
  2024年   744篇
  2023年   5058篇
  2022年   1184篇
  2021年   2833篇
  2020年   5412篇
  2019年   2134篇
  2018年   7016篇
  2017年   7390篇
  2016年   8052篇
  2015年   8149篇
  2014年   10592篇
  2013年   12333篇
  2012年   4079篇
  2011年   3873篇
  2010年   6974篇
  2009年   9306篇
  2008年   3765篇
  2007年   2725篇
  2006年   3870篇
  2005年   2432篇
  2004年   1810篇
  2003年   1461篇
  2002年   1307篇
  2001年   1852篇
  2000年   1171篇
  1999年   1727篇
  1998年   2149篇
  1997年   1941篇
  1996年   1991篇
  1995年   1721篇
  1994年   1107篇
  1993年   931篇
  1992年   744篇
  1991年   639篇
  1990年   509篇
  1989年   522篇
  1988年   498篇
  1987年   375篇
  1986年   354篇
  1985年   294篇
  1984年   249篇
  1983年   302篇
  1982年   223篇
  1981年   196篇
  1980年   119篇
  1978年   123篇
  1977年   119篇
  1976年   85篇
  1974年   73篇
  1972年   75篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
61.
62.
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   
63.
64.
65.
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   
66.
67.
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   
68.
69.
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   
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