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   1080篇
  免费   47篇
  国内免费   3篇
耳鼻咽喉   8篇
儿科学   55篇
妇产科学   21篇
基础医学   121篇
口腔科学   34篇
临床医学   61篇
内科学   131篇
皮肤病学   70篇
神经病学   26篇
特种医学   60篇
外科学   118篇
综合类   282篇
预防医学   42篇
眼科学   4篇
药学   41篇
  1篇
中国医学   4篇
肿瘤学   51篇
  2023年   5篇
  2022年   9篇
  2021年   25篇
  2020年   18篇
  2019年   12篇
  2018年   21篇
  2017年   16篇
  2016年   20篇
  2015年   34篇
  2014年   43篇
  2013年   38篇
  2012年   51篇
  2011年   52篇
  2010年   72篇
  2009年   56篇
  2008年   63篇
  2007年   53篇
  2006年   62篇
  2005年   40篇
  2004年   49篇
  2003年   29篇
  2002年   40篇
  2001年   33篇
  2000年   30篇
  1999年   24篇
  1998年   29篇
  1997年   31篇
  1996年   30篇
  1995年   17篇
  1994年   23篇
  1993年   8篇
  1992年   9篇
  1991年   9篇
  1990年   3篇
  1989年   8篇
  1988年   7篇
  1987年   5篇
  1986年   9篇
  1985年   6篇
  1984年   3篇
  1982年   6篇
  1981年   4篇
  1980年   2篇
  1978年   5篇
  1977年   2篇
  1976年   4篇
  1974年   2篇
  1973年   3篇
  1972年   2篇
  1969年   3篇
排序方式: 共有1130条查询结果,搜索用时 47 毫秒
61.
62.
63.
64.
Objective : To evaluate the efficacy of biliary‐enteric bypass in the palliation of malignant hilar biliary obstruction. Materials and Methods : Records of 19 patients from 1995 to 1998 were reviewed. There were 13 patients with cholangiocarcinoma and 6 patients with carcinoma of the gallbladder. Single biliary‐enteric bypass had been performed in 13 of the patients; the rest had more than one biliary‐enteric anastomosis. Results : The 30‐day mortality was 21% (4/19 patients). Bile leakage occurred in 2 patients, leading, in both, to fatality. Excluding the 30‐day mortality, the median survival of patients with carcinoma of the gallbladder and cholangiocarcinoma was 116 days (43–200) and 202 days (47–1207), respectively. The mean hospital stay was 31 days (13–59) and all patients were discharged with their symptoms relieved and a drop in bilirubin of at least two‐thirds their pre‐operative level. The late complication rate was 26.7% (4/15 patients). Conclusion : Biliary‐enteric bypass is effective in the palliation of symptoms of patients suffering from unresectable hilar biliary obstruction, although it carries considerable mortality and morbidity. Stenting, rather than surgery, should be considered for patients with unresectable gallbladder cancer.   相似文献   
65.
66.
Between May 1988 and November 1992 the data from 52 patients with tuberculous meningitis (TBM) were noted down for their symptoms and signs, BCG vaccines, PPD tests; clinical, laboratory, radiologic and microbiologic findings. These data were discussed by means of literature knowledge. Cranial computed tomography (CT) demonstrated hydrocephalus (HC) in 98% of the patients. There was a statistically significant difference among the clinical stages on admission in respect to prognosis (P < 0.05). In addition, there was also a significant relationship between prognosis and HC (P < 0.05). However, we did not find any significant relationship between parenchymal involvement, basilar meningitis and prognosis (P > 0.05).  相似文献   
67.
68.
69.
70.

Background

BCG vaccine is considered to have immunoprophylactic potential in leprosy. However controversy exists about the extent of prophylaxis it provides. In view of this, a study was undertaken to see the evolution of disease in established cases of leprosy who were already vaccinated with BCG and to compare it with the cases of leprosy who were not vaccinated with BCG.

Methods

114 newly diagnosed cases of leprosy were studied. Patients were divided into two groups-BCG vaccinated and non-vaccinated. Clinical diagnosis of leprosy was confirmed by bacteriological and histopathological studies in each case. All patients were given standard anti leprosy treatment and were evaluated monthly for a minimum period of one year.

Results

All the cases were males in the age group of 20 to 50 years. 25.4% of cases had received BCG vaccine and 74.6% were not vaccinated for the same. No significant difference was observed in the incidence of different types of leprosy in vaccinated and non-vaccinated groups. 25.9% cases in non-vaccinated group developed lepra reaction as compared to 13.8% in vaccinated group. The incidence of deformities and disabilities in vaccinated group was only 10.3% as against 18.8% in non-vaccinated group. The rate of bacillary clearance appeared faster in vaccinated group.

Conclusions

Although there is no significant difference in the pattern of different types of leprosy in BCG vaccinated and non-vaccinated cases, there is reduction in the incidence of reactions as well as deformities and disabilities in BCG vaccinated cases as compared to non-vaccinated cases.Key Words: BCG Vaccine, Leprosy  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