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   191788篇
  免费   32896篇
  国内免费   2726篇
耳鼻咽喉   5578篇
儿科学   6264篇
妇产科学   2850篇
基础医学   8621篇
口腔科学   2181篇
临床医学   29050篇
内科学   57876篇
皮肤病学   8379篇
神经病学   17756篇
特种医学   8017篇
外科学   47871篇
综合类   403篇
现状与发展   72篇
一般理论   6篇
预防医学   8021篇
眼科学   4294篇
药学   3561篇
中国医学   176篇
肿瘤学   16434篇
  2024年   707篇
  2023年   4994篇
  2022年   1660篇
  2021年   3896篇
  2020年   6437篇
  2019年   2757篇
  2018年   8193篇
  2017年   7939篇
  2016年   9207篇
  2015年   9267篇
  2014年   16573篇
  2013年   17032篇
  2012年   7845篇
  2011年   8139篇
  2010年   11816篇
  2009年   15555篇
  2008年   8305篇
  2007年   6757篇
  2006年   9251篇
  2005年   6557篇
  2004年   5949篇
  2003年   4980篇
  2002年   5039篇
  2001年   4187篇
  2000年   3348篇
  1999年   3689篇
  1998年   4359篇
  1997年   4060篇
  1996年   3931篇
  1995年   3678篇
  1994年   2372篇
  1993年   2031篇
  1992年   1653篇
  1991年   1674篇
  1990年   1255篇
  1989年   1375篇
  1988年   1210篇
  1987年   1003篇
  1986年   1008篇
  1985年   847篇
  1984年   697篇
  1983年   634篇
  1982年   631篇
  1981年   548篇
  1980年   483篇
  1979年   385篇
  1978年   427篇
  1977年   470篇
  1975年   325篇
  1972年   333篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
101.
Iron deficiency may exacerbate symptoms in the Restless Legs Syndrome (RLS). We investigated the effect of intravenous iron sucrose or placebo on symptoms in patients with RLS and mild to moderate iron deficit. Sixty patients with primary RLS (seven males, age 46 (9) years, S‐ferritin ≤45 μg/L) recruited from a cohort of 231 patients were randomly assigned in a 12‐months double‐blind, multi‐centre study of iron sucrose 1000 mg (n = 29) or saline (n = 31). The primary efficacy variable was the RLS severity scale (IRLS) score at week 11. Median IRLS score decreased from 24 to 7 (week 11) after iron sucrose and from 26 to 17 after placebo (P = 0.123, N.S. for between treatment comparison). The corresponding scores at week 7 were 12 and 20 in the two groups (P = 0.017). Drop out rate because of lack of efficacy at 12 months was 19/31 after placebo and 5/29 patients after iron sucrose (Kaplan–Meier estimate, log rank test P = 0.0006) suggesting an iron induced superior long term RLS symptom control. Iron sucrose was well tolerated. This study showed a lack of superiority of iron sucrose at 11 weeks but found evidence that iron sucrose reduced RLS symptoms both in the acute phase (7 weeks) and during long‐term follow up in patients with variable degree of iron deficiency. Further studies on target patient groups, dosing and dosing intervals are warranted before iron sucrose could be considered for treatment of iron deficient patients with RLS. © 2009 Movement Disorder Society  相似文献   
102.
103.
104.
105.
106.
Physiologic assessment of diseases of the motor unit from the anterior horn cells to the muscles relies on a combination of needle electromyography (EMG) and nerve conduction studies (NCS). Both require a unique combination of knowledge of peripheral nervous system anatomy, physiology, pathophysiology, diseases, techniques, and electricity is necessary. Successful, high‐quality, reproducible EMG depends on the skills of a clinician in patient interaction during the physical insertion and movement of the needle while recording the electrical signals. These must be combined with the skill of analyzing electric signals recorded from muscle by auditory pattern recognition and semiquantitation. 10 , 52 This monograph reviews the techniques of needle EMG and waveform analysis and describes the types of EMG waveforms recorded during needle EMG. © 2009 Wiley Periodicals, Inc. Muscle Nerve 39: 244–270, 2009  相似文献   
107.
Identification of an individual plays a vital part of any medicolegal investigation. Fingerprint is considered to be the most accurate and reliable indicator in identification.The present study was conducted on 500 South Indian subjects to determine the individuality and the predominant fingerprint pattern among South Indian population. Two-hundred and fifty males and 250 females of South Indian origin were included for this study and rolled prints were taken from all the 10 digits and the same were stored on a proforma.The most frequent fingerprint pattern was ulnar loop in the total population, as well as in the sex wise distribution.  相似文献   
108.
109.
110.
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