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   149362篇
  免费   31173篇
  国内免费   2389篇
耳鼻咽喉   5175篇
儿科学   5369篇
妇产科学   2367篇
基础医学   2918篇
口腔科学   1463篇
临床医学   26533篇
内科学   46894篇
皮肤病学   7414篇
神经病学   14647篇
特种医学   6311篇
外科学   40747篇
综合类   240篇
现状与发展   72篇
预防医学   6980篇
眼科学   3320篇
药学   860篇
中国医学   6篇
肿瘤学   11608篇
  2024年   684篇
  2023年   4777篇
  2022年   1170篇
  2021年   3047篇
  2020年   6002篇
  2019年   2122篇
  2018年   7347篇
  2017年   7301篇
  2016年   8372篇
  2015年   8364篇
  2014年   15425篇
  2013年   15537篇
  2012年   5342篇
  2011年   5331篇
  2010年   10278篇
  2009年   14169篇
  2008年   5667篇
  2007年   3890篇
  2006年   6367篇
  2005年   3650篇
  2004年   2925篇
  2003年   1913篇
  2002年   1998篇
  2001年   3787篇
  2000年   3000篇
  1999年   3199篇
  1998年   3630篇
  1997年   3452篇
  1996年   3354篇
  1995年   3207篇
  1994年   1937篇
  1993年   1560篇
  1992年   1371篇
  1991年   1410篇
  1990年   1059篇
  1989年   1173篇
  1988年   1017篇
  1987年   848篇
  1986年   883篇
  1985年   716篇
  1984年   544篇
  1983年   522篇
  1982年   515篇
  1981年   399篇
  1980年   364篇
  1979年   313篇
  1978年   332篇
  1977年   405篇
  1975年   281篇
  1972年   304篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
91.
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   
92.
93.
94.
95.
96.
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   
97.
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   
98.
99.
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