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   52510篇
  免费   4474篇
  国内免费   2734篇
耳鼻咽喉   451篇
儿科学   748篇
妇产科学   713篇
基础医学   7262篇
口腔科学   1239篇
临床医学   5668篇
内科学   8955篇
皮肤病学   830篇
神经病学   3700篇
特种医学   1885篇
外国民族医学   18篇
外科学   6272篇
综合类   6283篇
现状与发展   3篇
一般理论   9篇
预防医学   3114篇
眼科学   1361篇
药学   5304篇
  23篇
中国医学   1542篇
肿瘤学   4338篇
  2024年   86篇
  2023年   477篇
  2022年   1248篇
  2021年   1584篇
  2020年   1124篇
  2019年   1054篇
  2018年   1383篇
  2017年   1270篇
  2016年   1192篇
  2015年   1655篇
  2014年   2043篇
  2013年   2106篇
  2012年   3016篇
  2011年   3098篇
  2010年   1923篇
  2009年   1526篇
  2008年   2322篇
  2007年   2389篇
  2006年   2320篇
  2005年   1979篇
  2004年   1633篇
  2003年   1515篇
  2002年   1308篇
  2001年   2750篇
  2000年   2731篇
  1999年   2341篇
  1998年   1030篇
  1997年   762篇
  1996年   542篇
  1995年   502篇
  1994年   458篇
  1993年   341篇
  1992年   1129篇
  1991年   1023篇
  1990年   878篇
  1989年   963篇
  1988年   865篇
  1987年   815篇
  1986年   746篇
  1985年   649篇
  1984年   419篇
  1983年   346篇
  1982年   197篇
  1981年   147篇
  1980年   123篇
  1979年   210篇
  1973年   93篇
  1972年   92篇
  1971年   94篇
  1968年   83篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
21.
22.
Y Q Li  W Yuan  S L Zhang 《中国中西医结合杂志》1992,12(12):719-21, 737, 708
Xiao Er Ke Chuan Ling Oral Liquid (KCL) is a Chinese herbal preparation consisted of 10 herbs such as Prunus armeniacae, Scutelaria baicalensis, Lonicera japonica etc. 30 children suffering from bronchopneumonia and/or acute bronchitis were treated with KCL (treated group) and another 30 cases were treated with penicillin and aminophylline (control group). Results: cure rate and effective rate in treated group was 26.6%, and 93.3% respectively. While in control group was 30% and 96.6% respectively. No significant differences were seen between them(P > 0.05). The pharmacodynamic experiment showed KCL had potent pharmacological action. The experiment on tracheal fragment of Guinea pig in vitro showed it caused moderately strong smooth muscle relaxation, through inhibition the effect of histamine and acetylcholine. Asthma induction experiment of Guinea pig in vivo showed KCL could significantly prolong the latent period of asthma and alleviate asthmatic symptom. Ammonium water cough induction experiment in mice showed it may apparently prolong cough latent period and reduce times of cough relapse and alleviate cough symptom. KCL had potent antipyretic effect on fever model induced by triple vaccine in rabbits. Bacteriostatic and antiviral experiment in vitro showed the drug had quite strong inhibitory effects for Streptococcus hemolyticus, Staphylococcus aureus, Flexners Dysentery bacillus, Diplococcus pneumoniae and Pseudomonas aeruginosa, and it could potently inhibit the respiratory syncytial virus. KCL is an effective drug in treating bronchopneumonia and acute bronchitis.  相似文献   
23.
Y R Zhao  D F Zhang  C Q Pan 《中华内科杂志》1992,31(11):686-8, 730
Viral markers were studied in 79 cases of viral hepatitis with hepatic failure. The results were shown as follows: 8 cases were positive for anti-HAV IgM (10.12%); 76 cases positive for HBsAg or anti-HBc IgM (96.20%) and 41 cases positive for anti-HCV antibodies (51.89%). Among those with anti-HCV positive, 35 cases were co-infected with HBV, 5 cases with HAV and/or HCV, only one was infected with HCV alone 2 cases were HD-Ag positive (2.52%) and one not identified (1.27%). With the reference of clinical findings, patients co-infected with HBV/HCV or anti-HBc IgM positive were more critical and usually entail higher mortality. In cases with HCV co-infections, the positive HBV replication markers seems to be reduced. Hepatic failure without HBV replicative markers had a high rate of hepatic coma as well as poor outcome.  相似文献   
24.
25.
26.
The promoting effect of the Chinese medicinal herb, Wikstroemia chamaedaphne and Tung oil extracts (WC and HHPA) on carcinoma of uterine cervix induced by HSV-2 or MCA in mice was studied. The results showed that WC and HHPA extracts were not carcinogenic themselves. After carcinogen HSV-2 and MCA treatment, WC and HHPA were added separately. The inducing rates by HSV-2 increased from 7.4% to 21.1% and 26.3%, those by MCA increased from 56.5% to 82.8% and 84.4%. There was a significant difference between the combined groups and groups with HSV-2 or MCA only. The experimental results suggest that these two kinds of extracts play a promoting effect on carcinogenesis. The relation between the carcinogenesis of uterine cervix or nasopharynx and WC or HHPA extracts is discussed.  相似文献   
27.
Bipolar disorder (manic depressive disease) affects 1% of the United States population. These persons suffer from prolonged episodes of extreme elation and depression. There is a significant incidence of dental pathosis and a need for dental care among these patients. The medications used for the treatment of this disease, their physiologic effects, and their interactions with the drugs used in dentistry are reviewed.  相似文献   
28.
29.
30.
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