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   3865237篇
  免费   317579篇
  国内免费   15645篇
耳鼻咽喉   52280篇
儿科学   121143篇
妇产科学   100199篇
基础医学   606045篇
口腔科学   104433篇
临床医学   349462篇
内科学   690355篇
皮肤病学   101483篇
神经病学   324112篇
特种医学   152029篇
外国民族医学   262篇
外科学   593874篇
综合类   115183篇
现状与发展   28篇
一般理论   2419篇
预防医学   314547篇
眼科学   91766篇
药学   270543篇
  23篇
中国医学   12799篇
肿瘤学   195476篇
  2021年   58797篇
  2020年   36880篇
  2019年   60494篇
  2018年   75279篇
  2017年   57027篇
  2016年   63798篇
  2015年   78528篇
  2014年   113360篇
  2013年   179479篇
  2012年   114353篇
  2011年   116121篇
  2010年   125566篇
  2009年   127502篇
  2008年   100175篇
  2007年   104770篇
  2006年   113443篇
  2005年   107944篇
  2004年   108783篇
  2003年   97987篇
  2002年   86829篇
  2001年   137583篇
  2000年   131124篇
  1999年   123218篇
  1998年   69059篇
  1997年   65600篇
  1996年   63307篇
  1995年   58826篇
  1994年   52764篇
  1993年   49069篇
  1992年   85720篇
  1991年   81675篇
  1990年   77263篇
  1989年   75660篇
  1988年   69554篇
  1987年   67692篇
  1986年   64042篇
  1985年   63210篇
  1984年   55158篇
  1983年   49835篇
  1982年   43763篇
  1981年   41104篇
  1980年   38566篇
  1979年   45113篇
  1978年   38428篇
  1977年   35097篇
  1976年   32111篇
  1975年   30933篇
  1974年   32685篇
  1973年   31363篇
  1972年   29206篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
992.
993.

Introduction The focus in clinical pharmacy practice is and has for the last 30–35 years been on changing the role of pharmacy staff into service orientation and patient counselling. One way of doing this is by involving staff in change process and as a researcher to take part in the change process by establishing partnerships with staff. On the background of the authors’ widespread action research (AR)-based experiences, recommendations and comments for how to conduct an AR-study is described, and one of their AR-based studies illustrate the methodology and the research methods used. Methodology AR is defined as an approach to research which is based on a problem-solving relationship between researchers and clients, which aims at both solving a problem and at collaboratively generating new knowledge. Research questions relevant in AR-studies are: what was the working process in this change oriented study? What learning and/or changes took place? What challenges/pitfalls had to be overcome? What were the influence/consequences for the involved parts? When to use If you want to implement new services and want to involve staff and others in the process, an AR methodology is very suitable. The basic advantages of doing AR-based studies are grounded in their participatory and democratic basis and their starting point in problems experienced in practice. Limitations Some of the limitations in AR-studies are that neither of the participants in a project steering group are the only ones to decide. Furthermore, the collective process makes the decision-making procedures relatively complex.

  相似文献   
994.
995.
996.
997.
998.
We report a case of dichorionic, diamniotic twins who developed similar erythematous, annular, erosive plaques in the inguinal folds in the first few weeks of life that were refractory to topical antifungals and oral antibiotics. The twins were found to have high transaminase levels, antinuclear antibody positivity, and anti‐SSS/Ro) and anti‐SSB/La autoantibodies. The rash resolved without scarring by 7 months of age with the use of low‐potency topical corticosteroids. We suggest that physicians consider neonatal lupus erythematosus in neonates with atypical eruptions occurring in sun‐protected skin.  相似文献   
999.
Pediatric dermatology is one of the smallest subspecialties, and expanding the availability of care is of great interest. Teledermatology has been proposed as a way to expand access and improve care delivery, but no current assessment of pediatric teledermatology exists. The objective of the current study was to assess usage and perspectives on pediatric teledermatology. Surveys were distributed electronically to all 226 board‐certified U.S. pediatric dermatologists; 44% (100/226) responded. Nearly all respondents (89%) have experience with teledermatology. Formal teledermatology reimbursement success rates have increased to 35%. Respondents were positive about teledermatology's present and future prospects, and 41% want to use teledermatology more often, although they viewed teledermatology as somewhat inferior to in‐person care regarding accuracy of diagnosis and appropriation of management plans. Significant differences were found between formal teledermatology users and nonusers in salary structure, practice environment, sex, and region. Substantial increases in pediatric teledermatology have occurred in the last 5 to 10 years, and there remains cause for optimism for teledermatology's future. Concerns about diagnostic confidence and care quality indicate that teledermatology may be best for care of patients with characteristic clinical presentations or management of patients with established diagnoses.  相似文献   
1000.
We present the case of 7‐year‐old African American girl with loose anagen syndrome. Although this is a common cause of hair loss in Caucasian children, and there have been reports of cases occurring in dark‐skinned children of North African and Middle Eastern descent, to our knowledge there have been no cases reported in black children of sub‐Saharan African ancestry. We present this case to broaden the differential diagnosis of hair loss in African Americans.  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