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   1298693篇
  免费   101246篇
  国内免费   2144篇
耳鼻咽喉   18702篇
儿科学   45017篇
妇产科学   35687篇
基础医学   184376篇
口腔科学   34244篇
临床医学   113072篇
内科学   262890篇
皮肤病学   28494篇
神经病学   101334篇
特种医学   51957篇
外国民族医学   669篇
外科学   200410篇
综合类   27723篇
现状与发展   2篇
一般理论   397篇
预防医学   97241篇
眼科学   28575篇
药学   96738篇
  2篇
中国医学   2571篇
肿瘤学   71982篇
  2019年   9975篇
  2018年   14298篇
  2017年   10678篇
  2016年   11632篇
  2015年   13187篇
  2014年   18185篇
  2013年   27450篇
  2012年   37723篇
  2011年   39811篇
  2010年   23703篇
  2009年   22561篇
  2008年   37714篇
  2007年   40416篇
  2006年   40524篇
  2005年   39321篇
  2004年   38413篇
  2003年   37138篇
  2002年   36423篇
  2001年   64268篇
  2000年   66765篇
  1999年   56642篇
  1998年   15272篇
  1997年   13856篇
  1996年   14286篇
  1995年   13548篇
  1994年   12828篇
  1993年   11839篇
  1992年   44666篇
  1991年   43561篇
  1990年   42307篇
  1989年   40192篇
  1988年   36977篇
  1987年   36314篇
  1986年   33694篇
  1985年   32343篇
  1984年   24188篇
  1983年   20338篇
  1982年   11757篇
  1981年   10730篇
  1979年   21410篇
  1978年   14860篇
  1977年   12579篇
  1976年   11732篇
  1975年   12663篇
  1974年   14695篇
  1973年   14141篇
  1972年   12967篇
  1971年   11748篇
  1970年   11063篇
  1969年   10038篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
1.
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   
2.
3.
4.
5.
6.
7.
BackgroundTotal hip and knee arthroplasties are increasingly performed operations, and routine follow-up places huge demands on orthopedic services. This study investigates the effectiveness, patients’ satisfaction, and cost reduction of Virtual Joint Replacement Clinic (VJRC) follow-up of total hip arthroplasty and total knee arthroplasty patients in a university hospital. VJRC is especially valuable when in-person appointments are not advised or feasible such as during the COVID-19 pandemic.MethodsA total of 1749 patients who were invited for VJRC follow-up for knee or hip arthroplasty from January 2017 to December 2018 were included in this retrospective study. Patients were referred to VJRC after their 6-week postoperative review. Routine VJRC postoperative review was undertaken at 1 and 7 years and then 3-yearly thereafter. We evaluated the VJRC patient response rate, acceptability, and outcome. Patient satisfaction was measured in a subgroup of patients using a satisfaction survey. VJRC costs were calculated compared to face-to-face follow-up.ResultsThe VJRC had a 92.05% overall response rate. Only 7.22% required further in-person appointments with only 3% being reviewed by an orthopedic consultant. VJRC resulted in an estimated saving of £42,644 per year at our institution. The patients’ satisfaction survey showed that 89.29% of the patients were either satisfied or very satisfied with VJRC follow-up.ConclusionVJRC follow-up for hip and knee arthroplasty patients is an effective alternative to in-person clinic assessment which is accepted by patients, has high patient satisfaction, and can reduce the cost to both health services and patients.  相似文献   
8.
9.
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   
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