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   18034篇
  免费   6383篇
  国内免费   79篇
耳鼻咽喉   331篇
儿科学   422篇
妇产科学   442篇
基础医学   596篇
口腔科学   1406篇
临床医学   6253篇
内科学   4134篇
皮肤病学   605篇
神经病学   2445篇
特种医学   569篇
外科学   2499篇
综合类   29篇
现状与发展   2篇
一般理论   2篇
预防医学   2650篇
眼科学   363篇
药学   259篇
中国医学   2篇
肿瘤学   1487篇
  2024年   146篇
  2023年   1305篇
  2022年   322篇
  2021年   675篇
  2020年   1151篇
  2019年   509篇
  2018年   1506篇
  2017年   1670篇
  2016年   1669篇
  2015年   1698篇
  2014年   1935篇
  2013年   1921篇
  2012年   789篇
  2011年   773篇
  2010年   1152篇
  2009年   1544篇
  2008年   626篇
  2007年   423篇
  2006年   508篇
  2005年   345篇
  2004年   289篇
  2003年   266篇
  2002年   231篇
  2001年   293篇
  2000年   151篇
  1999年   262篇
  1998年   297篇
  1997年   297篇
  1996年   304篇
  1995年   260篇
  1994年   162篇
  1993年   157篇
  1992年   118篇
  1991年   91篇
  1990年   77篇
  1989年   94篇
  1988年   75篇
  1987年   54篇
  1986年   50篇
  1985年   54篇
  1984年   40篇
  1983年   28篇
  1982年   31篇
  1981年   23篇
  1980年   17篇
  1979年   12篇
  1978年   19篇
  1977年   11篇
  1974年   9篇
  1971年   9篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
51.
The concept of need and the practice of needs assessment are both subject to a wide range of interpretations, to the likely detriment of individual assessments and to multidisciplinary working. Clear definition is important for individual assessment, for the development of multidisciplinary tools and in gathering planning information. The concept of need is clarified, firstly by distinguishing between need and the difficulties that engender it, and secondly through a taxonomy of need. These assist clear definitions of both need and needs assessment when linked with a consideration of the current help a person receives and a specification of the type of help required by a person to meet their needs. Such definitions have implications for the role of needs assessment in individual assessment, service evaluation, service management and planning and in the development of multidisciplinary needs assessment tools.  相似文献   
52.
Effect of Glycemic Carbohydrates on Short-term Satiety and Food Intake   总被引:3,自引:0,他引:3  
We examine the relationships between glycemic carbohydrate and its effects on short-term satiety and food intake. Both high- and low-glycemic carbohydrates have an impact on satiety, but their effects have different time courses. High-glycemic carbohydrates are associated with a reduction in appetite and food intake in the short term (e.g., one hour), whereas the satiating effects of lower-glycemic carbohydrates appear to be delayed (e.g., 2 to 3 hours). There is no consistent evidence that an increase in blood glucose, either acute or sustained, is the primary determinant of their effects on food intake and satiety. Many other preabsorptive and postabsorptive signals for satiety exist and may be the determining factors. Further studies are needed to delineate the role of glycemic carbohydrates and their mechanisms of action in determining satiety.  相似文献   
53.
54.
55.
This paper, written by two male nurse teachers, describes and analyses their experience of working in a nurse education culture permeated by the philosophy of business management The introduction of business management practices to nurse education is discussed as a reflection of the current political hegemony of market forces and individualism The authors discuss the implications for nurse teachers of being continually exposed to these politically motivated forces which increasingly provide the paradigm for service developments within the United Kingdom health services In discussing the impact of this exposure it is argued that at the personal level individual teachers are experiencing a degree of apathy and personal dissonance which undermines their professional value system, resulting in emotional distress and a crisis of identity It provides a critical reflection on the way organizational dynamics and power relations influence the subjective sense-making of individuals The authors use a multiplicity of perspectives, including those provided by individual psychology, power relations, feminism and personhood, to argue for the need to develop an alternative paradigm which is characterized by the valuing of individual persons, empathic sensitivity and the fostering of creativity been important to us from a personal and professional  相似文献   
56.
Objectives: In this study, the authors tested whether electromagnetic interference (EMI) is able to impair correct electrocardiogram analysis and produce false‐positive shock advice from automated external defibrillators (AEDs) when the true rhythm is sinus. Methods: Nineteen healthy subjects were used to test five AEDs available on the Austrian market in a prospective, open, and sequence‐randomized study. The primary outcome variable was the absolute number of shocks advised in the presence of EMI. The secondary outcome was the number of impaired analyses caused by incorrectly detected patient movements or electrode failure. Results: Of 760 tests run, 18 (2.37%) cases of false‐positive results occurred, and two of five AEDs recommended shocks in the presence of sinus rhythm. Of 760 tests run, no electrode failures occurred. There were 27 occurrences (3.55%) of motion detected by an AED in the presence of strong electromagnetic fields. Conclusions: AED models differ in their response to EMI; it may be useful to consider specific safety requirements for areas with such fields present. Working personnel and emergency medical services staff should be informed about potential risks and the possible need for patient evacuation before AEDs are attached and shock recommendations are followed.  相似文献   
57.
58.
The World Wide Web creates new challenges and opportunities for medical educators. Prominent among these are the lack of consistent standards by which to evaluate web-based educational tools. We present the instrument that was used to review web-based innovations in medical education submissions to the 2003 Society of General Internal Medicine (SGIM) national meeting, and discuss the process used by the SGIM web-based clinical curriculum interest group to develop the instrument. The 5 highest-ranked submissions are summarized with commentary from the reviewers.  相似文献   
59.
This breakout session at the Academic Emergency Medicine 2006 Consensus Conference examined how baseline overcrowding impedes the ability of emergency departments to respond to sudden, unexpected surges in demand for patient care. Differences between daily and catastrophic surge were discussed, and the need to invoke a hospital-wide response to surge was explored.  相似文献   
60.
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