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   1529536篇
  免费   111330篇
  国内免费   4609篇
耳鼻咽喉   19421篇
儿科学   49333篇
妇产科学   40468篇
基础医学   226533篇
口腔科学   40504篇
临床医学   145508篇
内科学   299708篇
皮肤病学   31517篇
神经病学   129453篇
特种医学   54143篇
外国民族医学   446篇
外科学   209118篇
综合类   29572篇
现状与发展   1篇
一般理论   528篇
预防医学   132088篇
眼科学   32831篇
药学   112754篇
  6篇
中国医学   3729篇
肿瘤学   87814篇
  2021年   13810篇
  2019年   14886篇
  2018年   22545篇
  2017年   16379篇
  2016年   17361篇
  2015年   19806篇
  2014年   25588篇
  2013年   39843篇
  2012年   57933篇
  2011年   60591篇
  2010年   33796篇
  2009年   30023篇
  2008年   54465篇
  2007年   57664篇
  2006年   56796篇
  2005年   55081篇
  2004年   52338篇
  2003年   49375篇
  2002年   47572篇
  2001年   65003篇
  2000年   66761篇
  1999年   56049篇
  1998年   15354篇
  1997年   13946篇
  1996年   13725篇
  1995年   13044篇
  1994年   12162篇
  1993年   11423篇
  1992年   43901篇
  1991年   42902篇
  1990年   41492篇
  1989年   39317篇
  1988年   36408篇
  1987年   35402篇
  1986年   33758篇
  1985年   32121篇
  1984年   24144篇
  1983年   20573篇
  1982年   12318篇
  1979年   21793篇
  1978年   15508篇
  1977年   12765篇
  1976年   12431篇
  1975年   12784篇
  1974年   15598篇
  1973年   15280篇
  1972年   14117篇
  1971年   13205篇
  1970年   12175篇
  1969年   11141篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
91.
European Journal of Orthopaedic Surgery & Traumatology - The goals of this study were to compare patient satisfaction and wound-related complications in patients receiving 2-octyl cyanoacrylate...  相似文献   
92.
93.
94.
Annals of Nuclear Medicine - The Response Evaluation Criteria In Solid Tumors (RECIST) is the most used radiological method for evaluating response after peptide receptor radionuclide therapy...  相似文献   
95.

Objective

The “Centre Hospitalier Francois Dunan” is located on an isolated island and ensures patients care in hemodialysis thanks to telemedicine support. Many research studies have demonstrated the importance of hemodialysis fluids composition to reduce morbidity in patients on chronic hemodialysis. The aim of this study was to identify the risks inherent in the production of dialysis fluids in a particular context, in order to set up an improvement action plan to improve risk control on the production of dialysis fluids.

Methods

The risk analysis was conducted with the FMECA methodology (Failure Mode, Effects and Criticality Analysis) by a multi professional work group. Three types of risk have been reviewed: technical risks that may impact the production of hemodialysis fluids, health risks linked with chemical composition and health risks due to microbiological contamination of hemodialysis fluids.

Results

The work group, in close cooperation with the expert staff of the dialysis center providing telemedicine assistance, has developed an action plan in order to improve the control of the main risks brought to light by the risk analysis.

Conclusion

The exhaustive analysis of the risks and their prioritisation have permitted to establish a relevant action plan in this improving quality of dialysis fluids approach. The risk control of dialysis fluids is necessary for the security of dialysis sessions for patients, even more when these sessions are realized by telemedicine in Saint-Pierre-et-Miquelon.  相似文献   
96.
97.
98.
99.
Porocarcinoma is an unusual, locally aggressive and potentially fatal neoplasm. Several cutaneous malignancies have been described in association with porocarcinoma, including squamous cell carcinoma, basal cell carcinoma and tricholemmal carcinoma. Previous reports have indicated that the occurrence of malignant tumours in combination with porocarcinoma is extremely rare, in particular with regard to Bowen disease (BD). We report an uncommon case of porocarcinoma occurring synchronously in a single BD lesion in a 63‐year‐old woman with multiple BD lesions. The clinical and histological findings confirmed this diagnosis.  相似文献   
100.
Reactive lymphoid infiltrates of the skin composed predominantly of gamma‐delta (γδ) T cells are not well described in the literature. Herein we report a case of an otherwise healthy 4‐year‐old male who presented with a waxing and waning papular rash characterized by small, discrete crusted papules spread across his trunk, face and extremities. Clinical evaluation revealed no evidence of systemic disease. Microscopic examination revealed a dermal, perivascular infiltrate of highly atypical lymphocytes with a γδ T cell phenotype, worrisome for primary cutaneous γδ T cell lymphoma. The clinical course, however, was that of a reactive condition and prompted consideration of a diagnosis of pityriasis lichenoides et varioliformis acuta (PLEVA) and lymphomatoid papulosis (LyP). In many ways, this case defies current classification schemes and seems to expand the spectrum of reactive γδ T cell infiltrates of the skin.  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