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   2927324篇
  免费   214036篇
  国内免费   4889篇
耳鼻咽喉   41183篇
儿科学   94520篇
妇产科学   80357篇
基础医学   428334篇
口腔科学   80844篇
临床医学   261762篇
内科学   567800篇
皮肤病学   64174篇
神经病学   232145篇
特种医学   111298篇
外国民族医学   813篇
外科学   444952篇
综合类   61741篇
现状与发展   12篇
一般理论   1056篇
预防医学   226780篇
眼科学   68796篇
药学   216786篇
  11篇
中国医学   5767篇
肿瘤学   157118篇
  2019年   23393篇
  2018年   32324篇
  2017年   24574篇
  2016年   27316篇
  2015年   30863篇
  2014年   43717篇
  2013年   65992篇
  2012年   90498篇
  2011年   96334篇
  2010年   57494篇
  2009年   54359篇
  2008年   90856篇
  2007年   96651篇
  2006年   97719篇
  2005年   94936篇
  2004年   90806篇
  2003年   87554篇
  2002年   85295篇
  2001年   131857篇
  2000年   135343篇
  1999年   114289篇
  1998年   33201篇
  1997年   29451篇
  1996年   29593篇
  1995年   27795篇
  1994年   25754篇
  1993年   24305篇
  1992年   88970篇
  1991年   86390篇
  1990年   84619篇
  1989年   81453篇
  1988年   75131篇
  1987年   73815篇
  1986年   69528篇
  1985年   66575篇
  1984年   49766篇
  1983年   42422篇
  1982年   25392篇
  1979年   45966篇
  1978年   32764篇
  1977年   27335篇
  1976年   26075篇
  1975年   28186篇
  1974年   33980篇
  1973年   32442篇
  1972年   30438篇
  1971年   28652篇
  1970年   26709篇
  1969年   25309篇
  1968年   23505篇
排序方式: 共有10000条查询结果,搜索用时 31 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