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   2971740篇
  免费   217051篇
  国内免费   5537篇
耳鼻咽喉   41643篇
儿科学   95845篇
妇产科学   81509篇
基础医学   434180篇
口腔科学   81880篇
临床医学   265591篇
内科学   577617篇
皮肤病学   65108篇
神经病学   236263篇
特种医学   112747篇
外国民族医学   815篇
外科学   451028篇
综合类   63056篇
现状与发展   12篇
一般理论   1087篇
预防医学   229390篇
眼科学   69229篇
药学   220554篇
  13篇
中国医学   6157篇
肿瘤学   160604篇
  2021年   23737篇
  2019年   24376篇
  2018年   33512篇
  2017年   25514篇
  2016年   28350篇
  2015年   32044篇
  2014年   45245篇
  2013年   68083篇
  2012年   93263篇
  2011年   99285篇
  2010年   59406篇
  2009年   56020篇
  2008年   93313篇
  2007年   99182篇
  2006年   100095篇
  2005年   97159篇
  2004年   93306篇
  2003年   90072篇
  2002年   87684篇
  2001年   133077篇
  2000年   136390篇
  1999年   115150篇
  1998年   33702篇
  1997年   29808篇
  1996年   29916篇
  1995年   28091篇
  1994年   26027篇
  1993年   24546篇
  1992年   89443篇
  1991年   86853篇
  1990年   84982篇
  1989年   81873篇
  1988年   75403篇
  1987年   74144篇
  1986年   69829篇
  1985年   66866篇
  1984年   49989篇
  1983年   42667篇
  1982年   25541篇
  1979年   46112篇
  1978年   32847篇
  1977年   27426篇
  1976年   26157篇
  1975年   28331篇
  1974年   34134篇
  1973年   32612篇
  1972年   30579篇
  1971年   28776篇
  1970年   26815篇
  1969年   25415篇
排序方式: 共有10000条查询结果,搜索用时 13 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