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   37736篇
  免费   2150篇
  国内免费   110篇
耳鼻咽喉   480篇
儿科学   2240篇
妇产科学   748篇
基础医学   4764篇
口腔科学   907篇
临床医学   2631篇
内科学   7793篇
皮肤病学   851篇
神经病学   2060篇
特种医学   836篇
外科学   5323篇
综合类   1363篇
一般理论   15篇
预防医学   2186篇
眼科学   1529篇
药学   3651篇
中国医学   284篇
肿瘤学   2335篇
  2023年   227篇
  2022年   494篇
  2021年   1222篇
  2020年   683篇
  2019年   907篇
  2018年   1124篇
  2017年   803篇
  2016年   1011篇
  2015年   1057篇
  2014年   1447篇
  2013年   1870篇
  2012年   2590篇
  2011年   2615篇
  2010年   1487篇
  2009年   1322篇
  2008年   1920篇
  2007年   1893篇
  2006年   1887篇
  2005年   1489篇
  2004年   1484篇
  2003年   1269篇
  2002年   1087篇
  2001年   839篇
  2000年   877篇
  1999年   742篇
  1998年   327篇
  1997年   223篇
  1996年   233篇
  1995年   227篇
  1994年   185篇
  1993年   156篇
  1992年   503篇
  1991年   411篇
  1990年   447篇
  1989年   398篇
  1988年   363篇
  1987年   362篇
  1986年   352篇
  1985年   325篇
  1984年   267篇
  1983年   226篇
  1979年   233篇
  1978年   150篇
  1977年   181篇
  1976年   144篇
  1975年   172篇
  1974年   183篇
  1973年   183篇
  1972年   174篇
  1971年   161篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
91.
Role of Embolisation in preoperative management of Nasopharyngeal angiofibroma is well established in present day therapeutic modalities. An improvised technique i.e., subselective embolisation has been provided by Interventional radiologists to fortify the therapeutic results. This study compares the final outcome of seven cases, four of which were embolised pre operatively. Each case was dealt with varying surgical approaches.  相似文献   
92.
93.
94.
In the present study 35 patients with preforated and 15 cases with intact ear drums, were studied and eustachian tube function was assessed by Saccharine test. Bortnick-Miller test, and manual impedance audiometry. The merits and demerits of one over the other were evaluated. It was observed thal more than one test when employed provides better information as every test has its own advantages and limitations  相似文献   
95.
Bengal gram seed coat appeared to be a potent hypocholesterolemic/hypolipidemic agent in rabbits. When fed to hypercholesterolemic rabbits, it lowered hepatic cholesterol/lipid much more than in the control group. Aortic lipid levels were rather marginally increased but the increase was less in Bengal gram seed coat fed rabbits. Though seed coat of Bengal gram failed to prevent the development of atherosclerosis in hypercholesterolemic rabbits, but certainly it slowed down the process of its development. The hypocholesterolemic action of Bengal gram seed coat appeared to be due to the increased catabolism and excretion of cholesterol.  相似文献   
96.
Buprenorphine was introduced as a potent analgesic with low abuse potential. Reports of buprenorphine abuse by opiate abusers have accumulated over the years, highlighting its use as a cheap alternative to heroin. The lower potency compared with heroin is being compensated by using a cocktail of buprenorphine with benzodiazepines or cyclizine. This study of 18 cases seen over 3 years broadly confirms these findings. Four cases reported haematemesis during acute withdrawal, a symptom not reported in earlier studies.  相似文献   
97.
Objective: To determine if drip infusion should be discontinued after full recovery of the patient from anaesthesia after minilaparotomy cholecystectomy in uncomplicated cases.Design: A randomised controlled clinical trial on 60 patients, from the waiting list, of cholelithiasis/cholecystitis operated by minilaparotomy cholecystectomy between November 1995 to March 1996. 30 patients did not receive postoperative IV drip infusion and in 30 patients 12–24 hours of standard drip transfusion was continued according to the current practice.Setting: Single Surgical Unit, SS Hospital, Banaras Hindu University, Varanasi, India.Main outcome measure: Recognition of clinical indication for continuation of. IV drip infusion after full recovery from anaesthesia.Results: In the cohorts of 30 patients each who were or were not given IV drip infusion after full recovery from anaesthesia following minilaparotomy cholecystectomy the observations on pulse rate, blood pressure, time to first voiding of urine and time to start first oral intake of fluids were identical. However postoperative urinary retention occured in 6 (20%) patients in whom the IV drip infusion was given.Conclusion: There is no clinical indication to continue IV drip infusion after full recovery from anaesthesia in patients operated for minilaparotomy cholecystectomy.  相似文献   
98.
99.
Serum ceruloplasmin levels were estimated in 81 patients within one week after an attack of acute myocardial infarction. A total of 126 healthy subjects were taken as controls and investigated for this copper containing protein. Results showed that there is an elevation in the levels of serum ceruloplasmin in patients as compared to the controls. Ceruloplasmin levels showed a return to almost normal values in 54 follow-up cases of acute myocardial infarction during the fourth week after infarction.  相似文献   
100.
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