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   2953642篇
  免费   262418篇
  国内免费   26242篇
耳鼻咽喉   39952篇
儿科学   85998篇
妇产科学   72579篇
基础医学   481769篇
口腔科学   77998篇
临床医学   268457篇
内科学   504307篇
皮肤病学   81708篇
神经病学   251102篇
特种医学   114911篇
外国民族医学   204篇
外科学   459517篇
综合类   118410篇
现状与发展   63篇
一般理论   2069篇
预防医学   237492篇
眼科学   68254篇
药学   210720篇
  211篇
中国医学   20377篇
肿瘤学   146204篇
  2022年   29111篇
  2021年   63194篇
  2020年   41501篇
  2019年   63134篇
  2018年   75071篇
  2017年   57814篇
  2016年   62761篇
  2015年   80312篇
  2014年   116032篇
  2013年   179985篇
  2012年   86474篇
  2011年   83882篇
  2010年   119608篇
  2009年   123614篇
  2008年   66246篇
  2007年   66070篇
  2006年   77457篇
  2005年   72525篇
  2004年   71504篇
  2003年   62553篇
  2002年   51822篇
  2001年   81156篇
  2000年   73099篇
  1999年   78314篇
  1998年   64209篇
  1997年   62633篇
  1996年   59410篇
  1995年   54862篇
  1994年   48844篇
  1993年   45429篇
  1992年   50201篇
  1991年   46648篇
  1990年   43287篇
  1989年   43704篇
  1988年   40351篇
  1987年   39107篇
  1986年   36804篇
  1985年   37506篇
  1984年   37027篇
  1983年   34760篇
  1982年   37605篇
  1981年   35737篇
  1980年   33701篇
  1979年   28100篇
  1978年   27406篇
  1977年   26175篇
  1976年   23257篇
  1975年   21240篇
  1974年   20181篇
  1973年   19221篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
61.
Abstract

Purpose

Financial hardship can be a major cause of distress among persons with cancer, resulting in chronic stress and impacting physical and emotional health. This paper provides an analysis of the lived experience of cancer patients’ financial hardship from diagnosis to post-treatment.  相似文献   
62.
63.
64.
65.
Bortezomib is a novel proteasome inhibitor, which has been successfully used to treat mantle cell lymphoma and multiple myeloma. However, the direct effects of bortezomib on acute promyelocytic leukaemia (APL) have not been fully investigated. In the present study, the WST-8 assay, western blotting, flow cytometry, monodansylcadaverine staining and transmission electron microscopy were performed. It was demonstrated that bortezomib treatment induced a time- and dose-dependent decrease in the viability of NB4 cells. Bortezomib treatment induced cell apoptosis in NB4 cells, as assessed by Annexin V/propidium iodide analysis, and the detection of cleaved caspase-3, cleaved poly(ADP-ribose) polymerase, Bax and Bcl-2 expression. Furthermore, bortezomib treatment induced autophagy in NB4 cells, as indicated by autophagosome formation, p62 degradation, LC3-I to LC3-II conversion and formation of acidic autophagic vacuoles. Notably, autophagy induced by bortezomib was initiated prior to apoptosis. Inhibition of autophagy by knocking down Beclin-1 expression increased bortezomib-induced apoptosis in NB4 cells. Therefore, the present study revealed that the combination of bortezomib and autophagy inhibition may be a potential treatment strategy for APL.  相似文献   
66.
“三全育人”是高校思政教育工作的关键一环,也是中医药高校推动思政教育的重要内容。以“三全育人”为视角对北京中医药大学思想政治教育举措“杏林成长导师”计划路径、内容深入分析,运用统计分析和文献研究方法,剖析该计划对中医学专业大学生的学业、思想和实践等多个层面的现实成效,从而为“三全育人”理念在中医药院校制度建构中的应用提供新的视角与方法。  相似文献   
67.
68.
69.
Major depressive disorder and other neuropsychiatric disorders are often managed with long-term use of antidepressant medication. Fluoxetine, an SSRI antidepressant, is widely used as a first-line treatment for neuropsychiatric disorders. However, fluoxetine has also been shown to increase the risk of metabolic diseases such as non-alcoholic fatty liver disease. Fluoxetine has been shown to increase hepatic lipid accumulation in vivo and in vitro. In addition, fluoxetine has been shown to alter the production of prostaglandins which have also been implicated in the development of non-alcoholic fatty liver disease. The goal of this study was to assess the effect of fluoxetine exposure on the prostaglandin biosynthetic pathway and lipid accumulation in a hepatic cell line (H4-II-E-C3 cells). Fluoxetine treatment increased mRNA expression of prostaglandin biosynthetic enzymes (Ptgs1, Ptgs2, and Ptgds), PPAR gamma (Pparg), and PPAR gamma downstream targets involved in fatty acid uptake (Cd36, Fatp2, and Fatp5) as well as production of 15-deoxy-Δ12,14PGJ2 a PPAR gamma ligand. The effects of fluoxetine to induce lipid accumulation were attenuated with a PTGS1 specific inhibitor (SC-560), whereas inhibition of PTGS2 had no effect. Moreover, SC-560 attenuated 15-deoxy-Δ12,14PGJ2 production and expression of PPAR gamma downstream target genes. Taken together these results suggest that fluoxetine-induced lipid abnormalities appear to be mediated via PTGS1 and its downstream product 15d-PGJ2 and suggest a novel therapeutic target to prevent some of the adverse effects of fluoxetine treatment.  相似文献   
70.
Cognitive Therapy and Research - Despite interest in psychological inflexibility as a marker of suicide risk, no measure of psychological inflexibility specific to SI exists. The present study...  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