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   15654篇
  免费   6161篇
  国内免费   65篇
耳鼻咽喉   316篇
儿科学   381篇
妇产科学   389篇
基础医学   170篇
口腔科学   1357篇
临床医学   5988篇
内科学   3709篇
皮肤病学   531篇
神经病学   2149篇
特种医学   498篇
外科学   2202篇
综合类   19篇
现状与发展   2篇
预防医学   2413篇
眼科学   325篇
药学   136篇
肿瘤学   1295篇
  2024年   142篇
  2023年   1281篇
  2022年   282篇
  2021年   621篇
  2020年   1099篇
  2019年   434篇
  2018年   1436篇
  2017年   1604篇
  2016年   1585篇
  2015年   1609篇
  2014年   1838篇
  2013年   1781篇
  2012年   580篇
  2011年   599篇
  2010年   1041篇
  2009年   1409篇
  2008年   464篇
  2007年   286篇
  2006年   396篇
  2005年   213篇
  2004年   167篇
  2003年   153篇
  2002年   122篇
  2001年   269篇
  2000年   126篇
  1999年   224篇
  1998年   272篇
  1997年   280篇
  1996年   287篇
  1995年   247篇
  1994年   155篇
  1993年   144篇
  1992年   103篇
  1991年   85篇
  1990年   64篇
  1989年   86篇
  1988年   67篇
  1987年   48篇
  1986年   43篇
  1985年   46篇
  1984年   33篇
  1983年   23篇
  1982年   22篇
  1981年   18篇
  1980年   15篇
  1979年   8篇
  1978年   13篇
  1977年   10篇
  1976年   8篇
  1971年   9篇
排序方式: 共有10000条查询结果,搜索用时 54 毫秒
91.
92.
The literature on group coping skills training is reviewed and a model involving the use of a wide range of coping strategies with patients heterogeneous in terms of presenting problem is advocated. This study evaluates the effect of such an approach with a chronic inpatient and day-hospital patient population (n = 36) presenting with problems of anxiety and depression. Results suggest that the use of such groups can facilitate the transition from hospital to community. Further they are associated with symptomatic improvement that is of clinical significance in up to 50% of cases, which is largely maintained at 1 year follow-up and which is associated with a positive change in social functioning. In the light of this experience suggestions are made regarding the screening of patients and ways of enhancing group cohesion.  相似文献   
93.
Patient teaching or patient counselling?   总被引:1,自引:0,他引:1  
Careless or confused use of terms such as information giving, teaching and counselling may lead to inadequate understanding and practice. In view of the progress made in this area, designed to help patients cope with illness and treatment, this paper aims to clarify and identify similarities and differences between these activities and discuss their relevance for those in most need of these types of care. Having recognised the complexity and persistence of such needs, patients, their relatives and nurses should perhaps decide their respective roles and work towards improving the quality of and opportunities for such interventions.  相似文献   
94.
The biliary excretion of radioactivity after intravenous [3H]25-hydroxyvitamin D3 was studied in nine patients with T-tube bile drainage. The mean +/- SD 24-hr radioactivity excretion in T-tube bile expressed as a percentage of the administered dose was 6.7 +/- 2.9%; after correction for incomplete bile collection, the value obtained was 16.0 +/- 11.1%. Chloroform solubility of biliary radioactivity increased from 27.4 +/- 8.9% to 72.9 +/- 10.1% following incubation with beta-glucuronidase. High-performance liquid chromatographic analysis of chloroform extracts of bile revealed that most of the eluted radioactivity was more polar than [3H]25-hydroxyvitamin D3. No free [3H]25-hydroxyvitamin D3 was demonstrated. Thus in man, most of the biliary radioactivity excreted following [3H]25-hydroxyvitamin D3 is in the form of water-soluble compounds, mainly glucuronides. However, our results suggest that glucuronides of metabolites other than 25-OHD3 are predominantly formed.  相似文献   
95.
The rubric complementary medicine covers a variety of approaches that may seem alike only in their being outside conventional care and training. We have asked experienced practitioners to present their own pieces of this jigsaw, realising that these clinical fragments, when seen together, create excitement but also confusion. Of course, this forum is not intended to be a comprehensive review of relevant complementary treatments, and often the individual apporaches to clinical problems will appear totally unrelated, while their apparent effectiveness stretches the biomedical model and conventional research methodology beyond their capacity. With this in mind, we intend that forthcoming articles and reviews will expand on the therapies themselves, and discuss the evidence supporting them.  相似文献   
96.
97.
98.
99.
Gender differences in informal caring   总被引:1,自引:0,他引:1  
Men have hitherto largely been invisible in research on informal care. This paper examines gender differences in informal caring, focusing on gender differences according to the relationship between the carer and care-recipient and the location of caring. The paper uses secondary analysis of the 1990–91 General Household Survey, which identified over 2700 adults as informal carers. Four per cent of men and women provide care for someone living in the same household. More women than men, 13% compared with 10%, provide care for someone living in another household. Men carers are less involved in care provision than women, providing fewer hours of care each week, and are less likely to be the main carer. However, gender differences are most marked among married carers, apart from those caring for their spouse, and least among unmarried carers. Married men can often rely on their wives to perform caring roles rather than performing them personally. Women carers are more likely to provide personal care than men carers, but the gender difference is least among those caring for their spouse or for disabled children. Cross-sex personal care is performed within the marital relationship and by parents caring for disabled children, but seldom by adult children caring for their parents or in more distant caring relationships. Evidence of cross-sex taboos in giving personal care is largely restricted to care provided in another household. Since the majority of elderly people in need of care are women, such cultural taboos may reinforce the pressure on mid-life women to care for mothers and mothers-in-law.  相似文献   
100.
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