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   39369篇
  免费   2155篇
  国内免费   139篇
耳鼻咽喉   520篇
儿科学   2557篇
妇产科学   694篇
基础医学   4717篇
口腔科学   1108篇
临床医学   2809篇
内科学   7065篇
皮肤病学   1117篇
神经病学   2347篇
特种医学   1176篇
外科学   5939篇
综合类   1273篇
一般理论   17篇
预防医学   2009篇
眼科学   1376篇
药学   3978篇
中国医学   349篇
肿瘤学   2612篇
  2023年   285篇
  2022年   742篇
  2021年   1611篇
  2020年   888篇
  2019年   977篇
  2018年   1382篇
  2017年   1008篇
  2016年   1326篇
  2015年   1331篇
  2014年   1960篇
  2013年   2216篇
  2012年   3110篇
  2011年   3031篇
  2010年   1819篇
  2009年   1428篇
  2008年   2034篇
  2007年   2056篇
  2006年   1873篇
  2005年   1660篇
  2004年   1545篇
  2003年   1311篇
  2002年   1125篇
  2001年   772篇
  2000年   706篇
  1999年   588篇
  1998年   263篇
  1997年   212篇
  1996年   218篇
  1995年   184篇
  1994年   154篇
  1993年   130篇
  1992年   349篇
  1991年   335篇
  1990年   357篇
  1989年   329篇
  1988年   285篇
  1987年   241篇
  1986年   234篇
  1985年   228篇
  1984年   174篇
  1983年   122篇
  1982年   68篇
  1981年   75篇
  1980年   69篇
  1979年   109篇
  1978年   71篇
  1977年   87篇
  1976年   65篇
  1973年   62篇
  1971年   60篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
81.
82.
83.
84.
85.
86.
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   
87.
88.
Estimation of T and B lymphocytes was done in 50 patients of enteric fever, 50 duration matched non enteric fever patients and 50 normal healthy individuals. The difference in both early and late rosette forming T lymphocytes was found to be statistically significant in enteric versus non-enteric patients. Significant difference was also observed in enteric versus normal individuals in case of late rosette forming T lymphocytes.  相似文献   
89.
90.
Even though a variety of adverse effects caused by sweeteners, flavorings, and dyes in susceptible individuals have been reported, there is no good single reference with information about these substances in pediatric antimicrobials. Data on sweeteners, flavorings, and dyes in 91 antimicrobial preparations were collected. Sucrose was present in 74 (85%) of 87 preparations, followed by saccharin in 30 (34%) preparations. Mannitol, lactose, and sorbitol were each present in 7 preparations. None of the preparations were free of sweeteners. Thirty-four (37%) of 91 preparations did not specify the flavoring content. While cherry was the most common flavoring used, there were 25 other flavorings. Thirteen different dyes and coloring agents were used in these antimicrobials. Red dye no. 40 was present in 45% of preparations. Tables detailing sweeteners, flavorings, and dyes in different groups of antimicrobials (amoxicillin, ampicillin, cephalosporins, erythromycin, penicillins, sulfonamides, and others) and adverse effects reported with these inert ingredients are presented. These tables should be helpful to physicians in selecting an antimicrobial containing a different sweetener and/or dye when an adverse reaction occurs.  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