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   430篇
  免费   12篇
  国内免费   10篇
耳鼻咽喉   13篇
儿科学   15篇
妇产科学   2篇
基础医学   46篇
口腔科学   17篇
临床医学   46篇
内科学   101篇
皮肤病学   15篇
神经病学   3篇
特种医学   7篇
外科学   63篇
综合类   38篇
预防医学   32篇
眼科学   5篇
药学   30篇
中国医学   2篇
肿瘤学   17篇
  2023年   3篇
  2021年   11篇
  2018年   4篇
  2015年   11篇
  2014年   21篇
  2013年   18篇
  2012年   16篇
  2011年   19篇
  2010年   9篇
  2009年   15篇
  2008年   9篇
  2007年   19篇
  2006年   30篇
  2005年   11篇
  2004年   12篇
  2003年   19篇
  2002年   8篇
  2001年   13篇
  2000年   6篇
  1999年   12篇
  1998年   10篇
  1997年   13篇
  1996年   13篇
  1995年   7篇
  1994年   7篇
  1993年   7篇
  1992年   4篇
  1991年   9篇
  1990年   11篇
  1989年   9篇
  1988年   4篇
  1987年   9篇
  1986年   8篇
  1985年   5篇
  1984年   4篇
  1983年   3篇
  1982年   3篇
  1981年   2篇
  1980年   2篇
  1979年   3篇
  1978年   3篇
  1974年   7篇
  1973年   3篇
  1972年   2篇
  1969年   4篇
  1968年   2篇
  1967年   2篇
  1966年   3篇
  1959年   6篇
  1956年   2篇
排序方式: 共有452条查询结果,搜索用时 328 毫秒
1.
2.
3.
4.
Thirty-five cardiomyoplasty procedures were performed in five patients with dilated and 30 patients with ischemic cardiomyopathies. Russian-made cardiomyostimulators (CMS) were implanted in these patients. Twenty-one patients underwent a one-step procedure using a left thoracotomy for cardiomyoplasty, while in 14 patients, a two-step procedure that included a mid-line sternotomy was carried out. During the average follow-up period of 9 ± 2.1 months, studies were carried out that showed in survivors improved clinical functional status and decreased heart failure symptoms. Evidence of revascularization of the ischemic myocardium from the latissimus dorsi muscle (LDM) wrap was obtained by angiography and radioactive scintigraphy. In five patients, the CMS had to be removed due to complications, and in all these patients, their clinical functional status deteriorated following the cessation of cardiomyostimulation.  相似文献   
5.
ABSTRACT: A Male rabbit was immunized with rat testicular cytochrome (Cyt) ct and mated with normal, unimmunized females. The matings resulted in abnormal pregnancies: no offspring or stillborn or undersized liveborn offspring weighing 25–30 gm each. Another unusual observation was that fur-pulling behavior, normally exhibited by pregnant female rabbits at the end of the gestational period, was absent in all of these pregnancies. Therefore, immunization of a normal rabbit with testicular cyt ct appeared to interfere with physiological and behavioral aspects of pregnancy in normal female rabbits. The immunological basis of these findings remains to be determined.  相似文献   
6.
We studied myocardial biopsy specimens from the right atrium of cardiological patients with different degree of cardiac ischemia obtained during surgery. No inducible HSP70 stress proteins were detected in atrial cardiomyocytes of patients with the WPW syndrome without signs of ischemic injuries of the heart. These proteins were detected in the myocardium of coronary patients. Their expression was more intense in patients with coronary disease paralleled by the development of myocardial dyskinesia. Two-dimensional electrophoresis showed only acid HSP70 but no alkaline isoforms in coronary patients even with pronounced dyskinesia. Presumably, alkaline HSP70 isoforms are present in the myocardium directly involved in the dyskinesia zone.Translated from Byulleten Eksperimentalnoi Biologii i Meditsiny, Vol. 138, No. 10, pp. 412–415, October, 2004  相似文献   
7.
8.
We determined the distribution of DR4 subtypes in 309 DQB1*0302-positive haplotypes found in insulin-dependent diabetes mellitus (IDDM) patients and 70 control haplotypes present only in healthy family members. An increased frequency of DRB1*0401 allele (74.4% vs. 55.7%, P = 0.003) and a decrease of DRB1*0404 allele (23.6% vs. 40.0%, P = 0.0064) was revealed. A further analysis of extended haplotypes demonstrated strong linkages between various B alleles and DRB1*04 subtypes. HLA-B39 was more frequent in DRB1*0404–DQB1*0302-positive IDDM haplotypes compared with control ones (37.0% vs. 14.3%, P = 0.049), suggesting an involvement of the region telomeric to HLA-DRB1 in the susceptibility to IDDM.  相似文献   
9.
Ovarian apoplexy was established in 41 (2.6%) of 1581 women operated upon with diagnosis "acute appendicitis". Apoplexy of the right ovary was found in 26 women, of the left one--in 7 women. Seven patients had bilateral ovarian apoplexy associated with acute appendicitis. In ovarian apoplexy urgent operations are indicated. In 29 women operations were started by the Volkovich-Diakonova incision, in 12 cases median laparotomy was used. Appendectomy is necessary when inflammation of the vermiform process is suspected.  相似文献   
10.
目的:研究国产美罗培南用于抗感染治疗的临床疗效和安全性.方法:将30例中、重度急性细菌性感染患者按随机对照平行法分成2组,治疗组14例,给予美罗培南0.5g,q8h,静脉滴注;对照组16例,给予泰能(亚胺培南/西司他丁)1.0g,q8h,静脉滴注.两药疗程均为7~10d.结果:两组的临床痊愈率均为50%;临床有效率治疗组和对照组分别为85.7%和87.5%;细菌清除率分别为84.6%和85.7%;不良反应发生率分别为14.3%和18.8%.以上指标两组差异均无显著性(P>0.05).结论:国产新药美罗培南用于抗感染治疗安全有效.  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