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   9695篇
  免费   2620篇
  国内免费   55篇
耳鼻咽喉   152篇
儿科学   172篇
妇产科学   270篇
基础医学   271篇
口腔科学   367篇
临床医学   3458篇
内科学   1815篇
皮肤病学   303篇
神经病学   1046篇
特种医学   255篇
外科学   1785篇
综合类   21篇
现状与发展   1篇
预防医学   1284篇
眼科学   471篇
药学   140篇
中国医学   8篇
肿瘤学   551篇
  2024年   81篇
  2023年   502篇
  2022年   133篇
  2021年   287篇
  2020年   421篇
  2019年   216篇
  2018年   707篇
  2017年   764篇
  2016年   701篇
  2015年   740篇
  2014年   859篇
  2013年   882篇
  2012年   365篇
  2011年   369篇
  2010年   540篇
  2009年   698篇
  2008年   351篇
  2007年   248篇
  2006年   276篇
  2005年   210篇
  2004年   131篇
  2003年   112篇
  2002年   109篇
  2001年   194篇
  2000年   74篇
  1999年   179篇
  1998年   251篇
  1997年   241篇
  1996年   299篇
  1995年   208篇
  1994年   211篇
  1993年   160篇
  1992年   128篇
  1991年   110篇
  1990年   66篇
  1989年   77篇
  1988年   65篇
  1987年   64篇
  1986年   59篇
  1985年   38篇
  1984年   39篇
  1983年   27篇
  1982年   33篇
  1981年   17篇
  1980年   19篇
  1979年   14篇
  1978年   13篇
  1977年   10篇
  1975年   8篇
  1971年   11篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
81.
82.
While collaborative (or joint) working between social services and primary healthcare continues to rise up the policy agenda, current policy is not based on sound evidence of benefit to either patients or the wider community. Both sets of practitioners report benefits for their own work from adopting new arrangements for collaboration. The underlying assumption behind much of this activity is that a greater degree of integration provides benefits to both users and their carers, a perspective that at times obscures the issue of resource availability, especially in the form of practical community services such as district nursing and home help. At the present time there is insufficient evidence to demonstrate that formal arrangements for collaborative working (CW) are better than those forged informally between committed individuals or teams. Furthermore, arrangements for CW have not hitherto been widely evaluated in systematic studies with a comparative design and focus on outcomes for users and carers rather than on processes. In this paper we propose a number of process measures for future evaluation of CW: (1) study populations must be comparable; (2) details of how services are actually delivered must be obtained and colocation should not be assumed to mean collaboration; (3) care packages in areas of comparable resources should be examined; (4) both destinational outcomes and user‐defined evaluations of benefit should be considered; (5) possible disadvantages of integrated care also need to be actively considered; (6) evaluations should include an economic analysis. Those implementing new policies in Primary Care Trusts have, at present, little sound evidence to guide them in their innovative work. However, they should take the opportunity to rigorously test the advantages and disadvantages of collaboration.  相似文献   
83.
84.
85.
86.
The thoracic kidney is the rarest form of renal ectopia. Furthermore, it is usually asymptomatic and discovered incidentally. It is seen as a mass in the posterior mediastinum or juxta-diaphragmatic on chest radiography. A computed tomography scan or magnetic resonance imaging is usually needed for a definitive diagnosis. The thoracic kidney typically exits the retroperitoneal space through the foramen of Bochdalek.  相似文献   
87.
88.
89.
90.
ABSTRACT

Context: A limited number of studies have been conducted examining the role of beliefs in the prediction of breast self-examination (BSE) behavior in Australian women, particularly women under 50 years of age for which it is the primary method of early detection of breast cancer.

Objective: The present research investigated the differences in behavioral, normative and control beliefs between BSE performers and non-performers, within a theory of planned behavior framework, to assist in the development of specific education programs aimed at increasing BSE amongst this demographic group.

Method: Two hundred and fifty-three women enrolled in an undergraduate psychology course completed a questionnaire assessing beliefs regarding BSE. One month later, these women reported their BSE behavior during the previous month. Multivariate analyses were performed to identify belief-based differences between BSE performers and non-performers.

Results: Underlying behavioral and control, but not normative, beliefs about BSE distinguished between BSE performers and non-performers. Performers were more likely than non-performers to believe that engaging in BSE would be associated with identifying a lump or breast change sooner and detecting a breast cancer earlier in its course. Non-performers were more likely to perceive factors such as forgetting to perform the behavior, lack of time, lack of knowledge about how to perform the behavior, laziness, and a lack of confidence in their ability to identify lumps and breast changes as factors preventing their control over the performance of BSE.

Conclusions: The belief-based differences between BSE performers and non-performers found in this study can be used to inform health promotion strategies aimed at increasing BSE behavior in women less than 50 years of age.  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