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   2448篇
  免费   213篇
  国内免费   15篇
耳鼻咽喉   7篇
儿科学   122篇
妇产科学   43篇
基础医学   358篇
口腔科学   21篇
临床医学   317篇
内科学   441篇
皮肤病学   12篇
神经病学   212篇
特种医学   198篇
外科学   334篇
综合类   80篇
预防医学   191篇
眼科学   47篇
药学   153篇
中国医学   5篇
肿瘤学   135篇
  2021年   38篇
  2020年   17篇
  2019年   26篇
  2018年   26篇
  2017年   28篇
  2016年   22篇
  2015年   37篇
  2014年   51篇
  2013年   90篇
  2012年   89篇
  2011年   84篇
  2010年   84篇
  2009年   80篇
  2008年   88篇
  2007年   109篇
  2006年   99篇
  2005年   97篇
  2004年   87篇
  2003年   90篇
  2002年   91篇
  2001年   86篇
  2000年   66篇
  1999年   69篇
  1998年   69篇
  1997年   52篇
  1996年   35篇
  1995年   38篇
  1994年   27篇
  1993年   35篇
  1992年   56篇
  1991年   40篇
  1990年   60篇
  1989年   48篇
  1988年   59篇
  1987年   54篇
  1986年   52篇
  1985年   57篇
  1984年   26篇
  1983年   21篇
  1982年   30篇
  1981年   21篇
  1980年   27篇
  1979年   30篇
  1978年   29篇
  1977年   24篇
  1976年   31篇
  1975年   25篇
  1973年   18篇
  1970年   21篇
  1969年   17篇
排序方式: 共有2676条查询结果,搜索用时 31 毫秒
1.
2.
Pain control is one of the most challenging aspects in the management of chronic pancreatitis. Total pancreatectomy can successfully relieve the intractable abdominal pain in these patients but will inevitably result in insulin-dependent diabetes. Islet autotransplantation aims to preserve, as far as possible, the insulin secretory function of the islet cell mass thereby reducing (or even removing) the requirement for exogenous insulin administration after a total pancreactomy. Despite the relatively small number of centres able to perform these procedures, there are important technical variations in the details of their approaches. The aim of this review is to provide details of the current surgical practice for total pancreatectomy combined with islet autotransplantation, and outline the potential advantages and disadvantages of the variations adopted in each centre.  相似文献   
3.
OBJECTIVE: To examine the influence of in-season injury prevention training on hip and knee kinematics during a landing task. DESIGN: Longitudinal pre-post intervention study. SETTING: Testing sessions were conducted in a biomechanics research laboratory. PARTICIPANTS: Eighteen female soccer players between the ages of 14 and 17 participated in this study. All subjects were healthy with no current complaints of lower extremity injury. INTERVENTIONS: Testing sessions were conducted prior to and following a season of soccer practice combined with injury prevention training. MAIN OUTCOME MEASUREMENTS: During each testing session three-dimensional kinematics were collected while each subject performed a drop landing task. Peak hip and knee joint angles were measured during the early deceleration phase of landing and compared between pre- and post-training using paired t-tests. RESULTS: Following a season of soccer practice combined with injury prevention training, females demonstrated significantly less hip internal rotation (7.1 degrees vs. 1.9 degrees; P = 0.01) and significantly greater hip abduction (-4.9 degrees vs. -7.7 degrees; P = 0.02). No differences in knee valgus or knee flexion angles were found post-season. CONCLUSIONS: Female soccer players exhibited significant changes in hip kinematics during a landing task following in-season injury prevention training. Our results support the premise that a season of soccer practice combined with injury prevention training is effective in altering lower extremity motions that may play a role in predisposing females to ACL injury.  相似文献   
4.
5.
6.
7.
8.
A 13 year old Asian girl presenting with apparent hysterical paralysis and subsequent rapid cycling bipolar mood disorder was found to have biochemical evidence of pseudohypoparathyroidism type II. The mood disorder responded to treatment of the pseudohypoparathyroidism with a vitamin D analogue. Investigation of her parents and siblings showed phenotypes consistent with two distinct types of pseudohypoparathyroidism (type I and type II) in different family members.  相似文献   
9.
10.
ABSTRACT: On March 11–12, 1996, a workshop on how to implement new adolescent immunization (AI) recommendations was held in Atlanta, Ga. Sponsored by the Centers for Disease Control and Prevention, it was a collaborative effort of the National Immunization Program, the Division of Adolescent and School Health/National Center for Chronic Disease Prevention and Health Promotion, and the Hepatitis Branch/National Center for Infectious Diseases. The workshop brought together organizations and individuals interested in adolescent health and immunizations so they could address how new Al recommendations can be implemented most effectively. This article offers an overview of their discussions and suggestions, including issues of cooperation, education, legislation, and Al program development among health provider organizations, health departments, schools, community groups and various other agencies relating to adolescent health services.  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