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   578篇
  免费   113篇
  国内免费   9篇
儿科学   16篇
妇产科学   3篇
基础医学   68篇
口腔科学   20篇
临床医学   247篇
内科学   120篇
皮肤病学   2篇
神经病学   23篇
特种医学   34篇
外国民族医学   4篇
外科学   28篇
综合类   1篇
预防医学   44篇
眼科学   52篇
药学   19篇
中国医学   1篇
肿瘤学   18篇
  2023年   5篇
  2022年   2篇
  2021年   5篇
  2020年   2篇
  2019年   3篇
  2018年   12篇
  2017年   11篇
  2016年   11篇
  2015年   17篇
  2014年   23篇
  2013年   17篇
  2012年   24篇
  2011年   23篇
  2010年   17篇
  2009年   21篇
  2008年   18篇
  2007年   26篇
  2006年   10篇
  2005年   5篇
  2004年   12篇
  2003年   11篇
  2002年   13篇
  2001年   15篇
  2000年   12篇
  1999年   21篇
  1998年   25篇
  1997年   25篇
  1996年   23篇
  1995年   17篇
  1994年   18篇
  1993年   14篇
  1992年   16篇
  1991年   20篇
  1990年   19篇
  1989年   25篇
  1988年   18篇
  1987年   21篇
  1986年   19篇
  1985年   15篇
  1984年   17篇
  1983年   12篇
  1982年   11篇
  1981年   6篇
  1980年   8篇
  1979年   8篇
  1978年   8篇
  1977年   5篇
  1976年   6篇
  1975年   2篇
  1974年   2篇
排序方式: 共有700条查询结果,搜索用时 15 毫秒
61.
62.
This paper reports on the findings of a study conducted into the perceptions of final year Project 2000 pre-registration students towards their pre-registration education programme The aim of the research was to discover how students perceive their training in terms of value, relevance, intellectual potency, teaching methods and organization Data were collected using the Hoste scale which has been developed for the evaluation of educational courses A convenience sample of students (n = 131) within one college of nursing were invited to participate Findings include a particularly high level of satisfaction with Project 2000 in terms of value, breadth and relevance Organization and liveliness of the course were perceived much less satisfactorily There was a trend for a statistically significant difference between the mean scores of the theoretical and practical components of the course The findings are discussed with particular reference to the perceptions of theory and practice within the educational programme  相似文献   
63.
64.
The findings from a Florence Nightingale Scholarship to the USA and Canada, investigating the educational preparation of advanced practice nurses, are reported. The author considers a number of issues facing curriculum designers who might wish to develop clinically based advanced practice nurse programmes in the UK. Utilizing the experiential nature of personal visits, along with the available literature, the strategy adopted by some American and Canadian universities is highlighted to exemplify curriculum issues likely to be encountered in the UK. A definition of advanced nursing practice is provided as a foundation for discussion on curricular construction. This is followed by a discussion on advanced role nomenclature and components and characteristics of the 'nurse practitioner', 'clinical nurse specialist', 'nurse consultant' and 'nurse clinician', in order to clarify terminology and disentangle different advanced practice roles. The issues examined include the academic level of advanced practice nurse programmes; the determination of curricular content based on both a 'generalist' and 'specialist' model of practice; factors considered when exploring advanced practice competencies; and the resource implications for delivering opposing curriculum models. The paper suggests that there is a unique opportunity for advanced practice nursing to establish a key collaborative relationship in the delivery of health care, based on a nursing model, graduate study and the integration of key nursing and related concepts into clinical practice.  相似文献   
65.
BACKGROUND: Many clinical laboratories use toxin A immunoassays to test for Clostridium difficile. OBJECTIVE: To describe the clinical course of a patient infected with a toxin variant strain of C. difficile that was not detected by toxin A immunoassay; to genetically characterize this strain; and to estimate the number of laboratories that use only toxin A immunoassays. DESIGN: Case report, molecular investigation, and laboratory survey. SETTING: Tertiary care hospital in Chicago, Illinois. PATIENT: An 86-year-old man. MEASUREMENTS: Restriction endonuclease analysis, polymerase chain reaction, and survey of regional clinical laboratories. RESULTS: An elderly hospitalized man died of advanced pseudomembranous colitis. Four stool specimens submitted over a 2-month period had tested negative on toxin A immunoassay, but a strain of C. difficile with a 1.8-kb deletion of the toxin A gene was recovered from each specimen. This strain, identified as restriction endonuclease analysis type CF4, is closely related to a widely disseminated variant, toxinotype VIII. Toxin A immunoassay was the only test being performed for detection of C. difficile at 31 of 67 (46%) regional clinical laboratories. CONCLUSIONS: Toxin A variant strains of C. difficile cause serious disease and are undetectable in clinical laboratories that use only toxin A immunoassays for C. difficile testing.  相似文献   
66.
67.

Background

The aim was to examine the numbers of hours worked and patient visits provided by age and gender of dentists in Australia, and compare with previous estimates to describe trends.

Methods

Data were collected from a random sample (N = 2961) of Australian dentists. Private sector dentists working in clinical practise were included in the analysis.

Results

The response rate was 49% (N = 1345 dentists). Hours per year worked and number of patient visits per year were lower for dentists aged 65 years and older compared with younger dentists, and were higher for male compared with female dentists aged 35–45 to 55–64 years. Hours per year worked were lower in 2013–2014 than reported in 2009–2010, but the number of patient visits in 2013–2014 was similar to the previously reported estimate from 2009–2010.

Conclusions

Hours worked and visits provided were only lower among older dentists aged 65 years or more. Male dentists tend to work more hours per year and provide more patient visits per year than female dentists. Over the last decade, Australian dentists maintained a stable output of visits per year despite a trend towards fewer hours worked per year.  相似文献   
68.
Private health insurance plays a key role in financing dental care in Australia. Having private dental insurance has been associated with higher levels of access to dental care, visiting for a check‐up and receiving a favourable pattern of services. Associations with better oral health have also been reported. In the absence of any existing review, this paper aims to systematically review the relationship between dental insurance and dental service use and/or oral health outcomes in Australia. A systematic search of online databases and subsequent sifting resulted in 36 publications, 33 of which were cross sectional and three cohort analyses. Dental service outcomes were more commonly reported than oral health outcomes. There was considerable heterogeneity in the outcome measures reported, for both service use and health outcomes. Overall, the majority of the evidence was from cross sectional studies and few studies reported analyses adjusted for confounding factors. The consolidated evidence points towards a positive association between dental insurance and dental visiting. Dentally insured adults are likely to have more regular access to dental care and have a more favourable pattern of service use than the uninsured. However, evidence of associations between dental insurance and oral health are mixed.  相似文献   
69.
70.
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