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   8309篇
  免费   833篇
  国内免费   12篇
耳鼻咽喉   388篇
儿科学   469篇
妇产科学   377篇
基础医学   641篇
口腔科学   486篇
临床医学   786篇
内科学   1842篇
皮肤病学   204篇
神经病学   674篇
特种医学   310篇
外科学   1714篇
综合类   62篇
一般理论   1篇
预防医学   285篇
眼科学   266篇
药学   379篇
中国医学   24篇
肿瘤学   246篇
  2024年   22篇
  2023年   211篇
  2022年   147篇
  2021年   320篇
  2020年   233篇
  2019年   280篇
  2018年   593篇
  2017年   474篇
  2016年   604篇
  2015年   440篇
  2014年   686篇
  2013年   863篇
  2012年   749篇
  2011年   794篇
  2010年   606篇
  2009年   318篇
  2008年   269篇
  2007年   214篇
  2006年   209篇
  2005年   153篇
  2004年   109篇
  2003年   117篇
  2002年   114篇
  2001年   119篇
  2000年   102篇
  1999年   91篇
  1998年   51篇
  1997年   29篇
  1996年   15篇
  1995年   16篇
  1994年   17篇
  1993年   10篇
  1992年   15篇
  1991年   16篇
  1990年   14篇
  1989年   20篇
  1988年   13篇
  1987年   16篇
  1986年   13篇
  1985年   10篇
  1984年   9篇
  1983年   10篇
  1982年   3篇
  1981年   4篇
  1979年   4篇
  1974年   3篇
  1970年   3篇
  1967年   2篇
  1963年   2篇
  1959年   2篇
排序方式: 共有9154条查询结果,搜索用时 31 毫秒
61.
62.
63.
Rocuronium is a non-depolarizing neuromuscular blocking agent which is associated with injection pain and induces withdrawal movement of the injected hand or arm or generalized movements of the body after intravenous injection. The aim of this randomized study was to compare the efficacy of pretreatment with oral dexketoprofen trometamol (Arvelles®; Group A) with placebo (Group P) without tourniquet to prevent the withdrawal response caused by rocuronium injection. The study cohort comprised 150 American Society of Anaesthesiologists class I–III patients aged 18–75 years who were scheduled to undergo elective surgery with general anesthesia. The patients response to rocuronium was graded using a 4-point scale [0 = no response; 1 = movement/withdrawal at the wrist only, 2 = movement/withdrawal involving the arm only (elbow/shoulder); 3 = generalized response]. The overall incidence of withdrawal movement after rocuronium injection was significantly lower in Group A (30.1 %) than in Group P (64.6 %) (p < 0.001). The incidence of score 0 withdrawal movements was higher in Group A (69.9 %) than in Group P (35.4 %), that of score 1 withdrawal movements was similar between groups (Group A 21.9 %; Group B 26.1 %) (p = 0.560) and that of score 2 withdrawal movements was lower in Group A (8.2 %) than in Group P (38.5 %) (p < 0.001). There were no score 3 withdrawal movements in either group (p > 0.05). These results demonstrate that the preemptive administration of dexketoprofen trometamol can attenuate the degree of withdrawal movements caused by the pain of the rocuronium injection.  相似文献   
64.
65.
A series of new compounds containing formyl and imine group were synthesized. New formyl-substituted compounds were prepared by the reaction of 1,2-bis(bromomethyl)benzene with benzaldehyde derivatives in the presence of NaOH. New bis-crown ether imine compounds were prepared by the condensation of corresponding aldehydes with 4′-aminobenzo-15-crown-5. Sodium complexes of the bis-crown ethers form crystalline 2:1 (Na+:ligand) stoichiometries were also been synthesized. The prepared compounds were structurally confirmed by analytical and spectral data and evaluated for their antibacterial and antifungal activities. The results show that the antibacterial activity of compounds including o-methoxy group was significantly higher against S. epidermis compared to the other studied antimicrobial group.  相似文献   
66.
Kounis syndrome is a life-threatening medical condition that causes severe allergic reaction and acute coronary syndrome. Benzathine penicillin G is one of the most widely used antibiotics in clinical practice, but it can enhance both allergic and hypersensitivity complications. In this report, we describe the case of a 42-year-old man admitted to our hospital who presented with cryptic tonsillitis accompanied by angioneurotic edema, chest pain, and electrocardiographic variations. The patient was diagnosed with Kounis syndrome and treated with oral antihistamines and prednisolone. He was discharged following a complete recovery and regression of electrocardiographic abnormalities within 72 hours.  相似文献   
67.
68.
69.
70.
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