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   2377418篇
  免费   177377篇
  国内免费   3408篇
耳鼻咽喉   32337篇
儿科学   76755篇
妇产科学   63430篇
基础医学   352754篇
口腔科学   64060篇
临床医学   214510篇
内科学   463906篇
皮肤病学   52360篇
神经病学   188342篇
特种医学   88804篇
外国民族医学   492篇
外科学   358001篇
综合类   47755篇
现状与发展   12篇
一般理论   893篇
预防医学   185954篇
眼科学   54790篇
药学   177132篇
  11篇
中国医学   4633篇
肿瘤学   131272篇
  2021年   20060篇
  2019年   20503篇
  2018年   28148篇
  2017年   21087篇
  2016年   23503篇
  2015年   26481篇
  2014年   37257篇
  2013年   55521篇
  2012年   77027篇
  2011年   81822篇
  2010年   48377篇
  2009年   45814篇
  2008年   76550篇
  2007年   81479篇
  2006年   82245篇
  2005年   79635篇
  2004年   75989篇
  2003年   73183篇
  2002年   70865篇
  2001年   109020篇
  2000年   111687篇
  1999年   93790篇
  1998年   27342篇
  1997年   23955篇
  1996年   24304篇
  1995年   22948篇
  1994年   21112篇
  1993年   19910篇
  1992年   72199篇
  1991年   70277篇
  1990年   68574篇
  1989年   65829篇
  1988年   60445篇
  1987年   59271篇
  1986年   55364篇
  1985年   53170篇
  1984年   39462篇
  1983年   33553篇
  1982年   20034篇
  1979年   35978篇
  1978年   25747篇
  1977年   21344篇
  1976年   20422篇
  1975年   21912篇
  1974年   26236篇
  1973年   24878篇
  1972年   23267篇
  1971年   22102篇
  1970年   20290篇
  1969年   19356篇
排序方式: 共有10000条查询结果,搜索用时 720 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.
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   
7.
8.
9.
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   
10.
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