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   2912356篇
  免费   213419篇
  国内免费   4853篇
耳鼻咽喉   40944篇
儿科学   94098篇
妇产科学   80132篇
基础医学   426411篇
口腔科学   80513篇
临床医学   260353篇
内科学   564653篇
皮肤病学   63893篇
神经病学   230676篇
特种医学   110700篇
外国民族医学   801篇
外科学   443081篇
综合类   61628篇
现状与发展   12篇
一般理论   1053篇
预防医学   225430篇
眼科学   68256篇
药学   215889篇
  10篇
中国医学   5743篇
肿瘤学   156352篇
  2019年   23219篇
  2018年   32133篇
  2017年   24413篇
  2016年   27144篇
  2015年   30642篇
  2014年   43445篇
  2013年   65575篇
  2012年   89916篇
  2011年   95752篇
  2010年   57129篇
  2009年   54030篇
  2008年   90317篇
  2007年   96057篇
  2006年   97199篇
  2005年   94394篇
  2004年   90302篇
  2003年   87094篇
  2002年   84832篇
  2001年   131552篇
  2000年   135006篇
  1999年   113996篇
  1998年   33047篇
  1997年   29301篇
  1996年   29477篇
  1995年   27693篇
  1994年   25655篇
  1993年   24221篇
  1992年   88759篇
  1991年   86159篇
  1990年   84383篇
  1989年   81254篇
  1988年   74906篇
  1987年   73657篇
  1986年   69357篇
  1985年   66416篇
  1984年   49636篇
  1983年   42331篇
  1982年   25302篇
  1979年   45827篇
  1978年   32657篇
  1977年   27234篇
  1976年   25982篇
  1975年   28104篇
  1974年   33874篇
  1973年   32361篇
  1972年   30343篇
  1971年   28567篇
  1970年   26637篇
  1969年   25232篇
  1968年   23419篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
Quality of Life Research - The COVID-19 pandemic might add to the stressors experienced by people living with rheumatic diseases. This study aimed to examine rheumatic patients’ functional...  相似文献   
2.
Kinase alterations are increasingly recognised as oncogenic drivers in mesenchymal tumours. Infantile fibrosarcoma and the related renal tumour, congenital mesoblastic nephroma, were among the first solid tumours shown to harbour recurrent tyrosine kinase fusions, with the canonical ETV6::NTRK3 fusion identified more than 20 years ago. Although targeted testing has long been used in diagnosis, the advent of more robust sequencing techniques has driven the discovery of kinase alterations in an array of mesenchymal tumours. As our ability to identify these genetic alterations has improved, as has our recognition and understanding of the tumours that harbour these alterations. Specifically, this study will focus upon mesenchymal tumours harbouring NTRK or other kinase alterations, including tumours with an infantile fibrosarcoma-like appearance, spindle cell tumours resembling lipofibromatosis or peripheral nerve sheath tumours and those occurring in adults with a fibrosarcoma-like appearance. As publications describing the histology of these tumours increase so, too, do the variety kinase alterations reported, now including NTRK1/2/3, RET, MET, RAF1, BRAF, ALK, EGFR and ABL1 fusions or alterations. To date, these tumours appear locally aggressive and rarely metastatic, without a clear link between traditional features used in histological grading (e.g. mitotic activity, necrosis) and outcome. However, most of these tumours are amenable to new targeted therapies, making their recognition of both diagnostic and therapeutic import. The goal of this study is to review the clinicopathological features of tumours with NTRK and other tyrosine kinase alterations, discuss the most common differential diagnoses and provide recommendations for molecular confirmation with associated treatment implications.  相似文献   
3.
Molnár  B.  Aroca  S.  Dobos  A.  Orbán  K.  Szabó  J.  Windisch  P.  Stähli  A.  Sculean  A. 《Clinical oral investigations》2022,26(12):7135-7142
Clinical Oral Investigations - To evaluate t he long-term outcomes following treatment of RT 1 multiple adjacent gingival recessions (MAGR) using the modified coronally advanced tunnel (MCAT) with...  相似文献   
4.
5.
6.
7.
Journal of Medical Ultrasonics - Chronic liver disease is still a major problem because disease progression will ultimately lead to liver cirrhosis. Portal hypertension is the hallmark in advanced...  相似文献   
8.
9.
10.
The coronavirus disease 2019 (COVID-19) pandemic has rapidly created widespread impacts on global health and the economy. Data suggest that women are less susceptible to severe illness. However, sex-disaggregated data are incomplete, leaving room for misinterpretation, and focusing only on biologic sex underestimates the gendered impact of the pandemic on women. This narrative review summarizes what is known about gender disparities during the COVID-19 pandemic and the economic, domestic, and health burdens along with overlapping vulnerabilities related to the pandemic. In addition, this review outlines recommended strategies that advocacy groups, community leaders, and policymakers should implement to mitigate the widening gender disparities related to COVID-19.  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