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   3462534篇
  免费   289787篇
  国内免费   13427篇
耳鼻咽喉   47191篇
儿科学   109654篇
妇产科学   89711篇
基础医学   551488篇
口腔科学   93610篇
临床医学   316724篇
内科学   613423篇
皮肤病学   91903篇
神经病学   297199篇
特种医学   135399篇
外国民族医学   288篇
外科学   529462篇
综合类   102665篇
现状与发展   24篇
一般理论   2372篇
预防医学   295835篇
眼科学   78449篇
药学   236911篇
  26篇
中国医学   9377篇
肿瘤学   164037篇
  2021年   55514篇
  2020年   35334篇
  2019年   58426篇
  2018年   71876篇
  2017年   54815篇
  2016年   60374篇
  2015年   74473篇
  2014年   108741篇
  2013年   174118篇
  2012年   96626篇
  2011年   97336篇
  2010年   118047篇
  2009年   122263篇
  2008年   84086篇
  2007年   87730篇
  2006年   97317篇
  2005年   92952篇
  2004年   94286篇
  2003年   84934篇
  2002年   74617篇
  2001年   102695篇
  2000年   95316篇
  1999年   95425篇
  1998年   64753篇
  1997年   62741篇
  1996年   60881篇
  1995年   56295篇
  1994年   50552篇
  1993年   47198篇
  1992年   67635篇
  1991年   64887篇
  1990年   61498篇
  1989年   60677篇
  1988年   56491篇
  1987年   55245篇
  1986年   52684篇
  1985年   52260篇
  1984年   48211篇
  1983年   44349篇
  1982年   41734篇
  1981年   39442篇
  1980年   37181篇
  1979年   40684篇
  1978年   36283篇
  1977年   32867篇
  1976年   30160篇
  1975年   29024篇
  1974年   30515篇
  1973年   29620篇
  1972年   27866篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
971.
972.
Lucio phenomenon is an atypical reaction of leprosy, characterized by vasculitic lesions that can mimic antiphospholipid syndrome (APS) clinically. Distinguishing the two can be difficult as antiphospholipid autoantibodies may be present in patients with leprosy. We report on a 32‐year‐old female patient presenting with a sudden onset of fever, hemorrhagic bullae, and skin necrosis on her lower legs. She was treated for APS due to the presence of antiphospholipid antibodies but had an inadequate response. A skin biopsy revealed thrombotic vasculopathy and necrotizing vasculitis associated with aggregation of foam cells in the perivascular area and subcutis, with acid‐fast bacilli in the histiocytes and blood vessel walls. Direct immunofluorescence showed IgM, C3, and fibrinogen deposition in the superficial and deep dermal blood vessels. The pathology confirmed the diagnosis of Lucio phenomenon, and appropriate therapy was given. It is essential to evaluate the patient comprehensively, including clinical, serological, and pathological aspects, to obtain the correct diagnosis.  相似文献   
973.
974.
975.
This paper reviews the published literature on a group of developmental disorders of the retina and retinal pigment epithelium which result in focal abnormalities in one or both eyes. They are often asymptomatic, found on routine examination and are generally non-progressive. Some are associated with other systemic abnormalities.Subject terms: Retinal diseases, Eye abnormalities  相似文献   
976.
977.
978.
979.
Objective: A multidisciplinary vocational rehabilitation programme, the Vocational Enablement Protocol (VEP) was developed to address the specific needs of employees with hearing difficulties. In the current study we evaluated the process of implementing the VEP in audiologic care among employees with hearing impairment. Design: In conjunction with a randomized controlled trial, we collected and analysed data on seven process parameters: recruitment, reach, fidelity, dose delivered, dose received and implemented, satisfaction, and perceived benefit. Study sample: Sixty-six employees with hearing impairment participated in the VEP. The multidisciplinary team providing the VEP comprised six professionals. Results: The professionals performed the VEP according to the protocol. Of the recommendations delivered by the professionals, 31% were perceived as implemented by the employees. Compliance rate was highest for hearing-aid uptake (51%). Both employees and professionals were highly satisfied with the VEP. Participants rated good perceived benefit from it. Conclusions: Our results indicate that the VEP could be a useful treatment for employees with hearing difficulties from a process evaluation perspective. Implementation research in the audiological setting should be encouraged in order to further provide insight into parameters facilitating or hindering successful implementation of an intervention and to improve its quality and efficacy.  相似文献   
980.
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