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   760篇
  免费   89篇
  国内免费   10篇
耳鼻咽喉   2篇
儿科学   14篇
妇产科学   4篇
基础医学   52篇
口腔科学   13篇
临床医学   201篇
内科学   114篇
皮肤病学   4篇
神经病学   30篇
特种医学   121篇
外科学   144篇
综合类   7篇
预防医学   75篇
药学   34篇
中国医学   1篇
肿瘤学   43篇
  2023年   5篇
  2021年   8篇
  2018年   18篇
  2017年   14篇
  2016年   15篇
  2015年   18篇
  2014年   26篇
  2013年   22篇
  2012年   18篇
  2011年   20篇
  2010年   16篇
  2009年   20篇
  2008年   26篇
  2007年   32篇
  2006年   30篇
  2005年   45篇
  2004年   28篇
  2003年   25篇
  2002年   36篇
  2001年   32篇
  2000年   21篇
  1999年   32篇
  1998年   29篇
  1997年   26篇
  1996年   35篇
  1995年   15篇
  1994年   20篇
  1993年   14篇
  1992年   12篇
  1991年   9篇
  1990年   12篇
  1989年   12篇
  1988年   8篇
  1987年   11篇
  1986年   14篇
  1985年   15篇
  1984年   13篇
  1983年   12篇
  1982年   5篇
  1981年   6篇
  1979年   7篇
  1978年   5篇
  1977年   4篇
  1976年   10篇
  1975年   4篇
  1974年   4篇
  1973年   10篇
  1972年   5篇
  1971年   4篇
  1969年   4篇
排序方式: 共有859条查询结果,搜索用时 31 毫秒
81.
复苏水平的进步已大大提高了烧伤患者的幸存者数目,烧伤休克死亡已较为罕见。21世纪,对烧伤创面的妥善处理很大程度上可使烧伤患者迅速恢复良好的功能。  相似文献   
82.
83.
The needs of postregistration students pursuing degree-linked clinical courses have received little attention and there are few insights concerning their aspirations when they enrol on such courses. Thus the aim of this study was to explore postregistration students' perceptions of the specific needs of their patient/client group and to examine how they envisaged the course on which they had just enrolled might help them to meet these needs in addition to their own requirements for professional and personal development. Data were collected by group interview from 62 students enrolling on eight different postregistration courses, all employed in an acute hospital trust. The results were analysed inductively. They indicated that students had internalized the state of the healthcare market and were keenly aware of the need to fulfil the expectations of employers and the public, while fulfilling their own needs for education and pursuing their own professional and career trajectories. They appeared ambitious and yet appeared to demonstrate empathy for patients and their families and felt a tremendous desire to provide care of a high quality through the optimal development of technical expertise. Students' emphasis on the importance of keeping abreast of technological developments should not be lightly dismissed considering its prominent position within the acute areas where they were employed, especially as it did not replace their desire to promote the caring aspects of their work.  相似文献   
84.
85.
The aim of this study was to determine the effectiveness of uterine artery embolization (UAE) as a primary treatment method in treatment of symptomatic fibroids, whether there are any preembolization MRI characteristics of fibroid predictive of reduction in volume and assess reduction in uterine and dominant fibroid volumes using ultrasound (US) and MRI. Study was carried out in total of 32 patients aged 25–49 years (mean 40.9 years). Uterine and dominant fibroid volume were determined using US and MRI before UAE, MRI and US at 3 months and US alone at 6 and 12 months post‐UAE, supplemented by clinical evaluation at interval of 3, 6 and 12 months. Procedure was carried out through unilateral femoral puncture using poly vinyl alcohol (PVA) particles 355–500 μm in size. All 32 patients had successful procedures. Overall, 25 patients responded, giving a clinical success rate of 78.12%. Mean reduction in volume of uterus and fibroid was 33 and 59.7% and 48.9 and 75.5% on US at 3 and 12 months respectively, and 33.3 and 58.6% on MRI at 3 months. Volume reduction on US and MRI at 3 months was highly correlative. There was no statistical difference in size reduction in volume of fibroids, which were hypointense or hyperintense on T2‐weighted image (T2WI) on pre‐UAE MRI. Uterine artery embolization leads to good technical success and fibroid volume reduction. Ultrasound alone may be used for follow up of patients post‐UAE. Preprocedure signal characteristics on T2WI are not predictors of volume reduction after UAE.  相似文献   
86.
AIMS OF THE STUDY: This paper uses the findings of a recent bibliometric analysis of published UK nursing research to ask whether the field is characterized by a fundamental split between two underlying areas of research interest. These can be termed 'endogenous' and 'exogenous'. The former term describes research which tends to be concerned with problems and issues to do with nursing as a profession; the latter is concerned with problems and issues centring around the nursing of patients. DESIGN/METHODS: Papers in the Wellcome Trust's Research Outputs Database (ROD), a database of UK biomedical research, were analysed. Nursing papers published between 1988 and 1995 numbered 1,845, just less than 1% of the total papers in the ROD. RESULTS/FINDINGS: Analysis of the subfield identified that nursing research was atypical of biomedical research as a whole in a number of ways. One difference was that usually in biomedical research there is a general correlation between numbers of funders acknowledged on a paper, numbers of authors, and esteem of the journal in which a paper appears. In nursing there was, if anything, a tendency for highly esteemed papers to have fewer authors and be less likely to have acknowledged funding. However, the apparently endogenous and exogenous papers have quite different characteristics. This paper explores this apparent difference and possible reasons for this difference and will briefly compare nursing research with some other newly emerging social and academic groups. CONCLUSIONS: Thinking of nursing research outputs in this way can provide insight into the existence of different reward systems influencing nurse researchers. However, it is impossible to draw too confident a differentiation without reading each individual paper and making judgements about whether they are 'endogenous' or 'exogenous', a practice generally beyond the scope of bibliometric practice.  相似文献   
87.
This paper reports on part of a national study conducted between 1994 and 1996, the overall aim of which was to examine the 'fitness for purpose' of the Project 2000 nursing education reforms. The study used multiple methods of data collection, including an individual and group interview study of nurse managers (n = 132) and a national survey of Project 2000 diplomates and traditionally prepared registered nurses (n = 5417). Findings in relation to the managers' expectations and experiences of diplomates are presented. This includes views on the level of skills achievement and skills acquisition of diploma level education. The qualities of the diplomates are discussed and this includes those areas where the skills of the diplomates are felt to achieve what is required of the role. Also included is an exploration of those skills which the managers felt fell short of expectations. Managers raised the long-standing concerns of clinical skills and competencies and discussed these in relation to the changing health care environment and the relative roles of other health care workers. The conclusions highlight the need to identify what could be seen as the 'core skills' required of a registered nurse and the need to explore the environment in which the diplomate takes up first appointment.  相似文献   
88.
World Journal of Surgery - To assess long-term oncologic outcomes of robotic-assisted liver resection (RLR) for colorectal cancer (CRC) metastases as compared to a propensity-matched cohort of...  相似文献   
89.
90.
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