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   835篇
  免费   22篇
  国内免费   11篇
耳鼻咽喉   4篇
儿科学   23篇
妇产科学   8篇
基础医学   128篇
口腔科学   9篇
临床医学   52篇
内科学   237篇
皮肤病学   15篇
神经病学   76篇
特种医学   32篇
外科学   105篇
综合类   2篇
预防医学   11篇
眼科学   1篇
药学   59篇
中国医学   3篇
肿瘤学   103篇
  2024年   1篇
  2023年   7篇
  2022年   13篇
  2021年   19篇
  2020年   10篇
  2019年   5篇
  2018年   14篇
  2017年   12篇
  2016年   17篇
  2015年   19篇
  2014年   23篇
  2013年   34篇
  2012年   52篇
  2011年   55篇
  2010年   27篇
  2009年   29篇
  2008年   39篇
  2007年   55篇
  2006年   39篇
  2005年   47篇
  2004年   53篇
  2003年   61篇
  2002年   80篇
  2001年   2篇
  2000年   11篇
  1999年   8篇
  1998年   18篇
  1997年   10篇
  1996年   18篇
  1995年   12篇
  1994年   12篇
  1993年   4篇
  1992年   8篇
  1991年   9篇
  1990年   9篇
  1989年   4篇
  1988年   9篇
  1987年   1篇
  1986年   2篇
  1983年   2篇
  1982年   4篇
  1981年   2篇
  1980年   3篇
  1979年   3篇
  1978年   1篇
  1977年   2篇
  1975年   1篇
  1973年   1篇
  1970年   1篇
排序方式: 共有868条查询结果,搜索用时 15 毫秒
101.
We examined 55 patients (40 male, 15 female) who were diagnosed from 1987 to 1991 as having early gastric cancer (EGC) stage I according to the general rules of classification of the Japanese Research Society for Gastric Cancer. Of the 55 patients, 42 (30 male, 12 female) were alive in April 1992. The prognosis correlated well with the ratio of neutrophils to lymphocytes (N/L ratio) but not with the total number of white blood cells in the peripheral blood. The patients were divided into two groups according to their N/L ratio. Of the 29 patients with an N/L ratio less than 2, 27 were alive in 1992, whereas only 15 of the 26 patients with an N/L ratio of 2 or more were alive (χ2 analysis, P = 0.0022). We further examined the phenotypes of neutrophils from 29 other patients with EGC at the time of diagnosis before surgical operation. These patients were divided into two groups: 17 patients with a low N/L ratio (less than 2) and 12 patients with a high N/L ratio (2 or more). CD10 and CD35 expressions on neutrophils from the patients with a low N/L ratio were lower than those from the patients with a high N/L ratio. The N/L ratio correlated well with both CD10 and CD35 expression, whereas no correlation was observed between the numbers of neutrophils and the expression of these phenotypes. The respiratory burst of neutrophils from the patients with a high N/L ratio was higher than that of neutrophils from the patients with a low N/L ratio, though there was no correlation in the phagocytic activity between both groups. It was thus suggested that the heterogeneity of neutrophils is, at least partly, related to the prognosis of patients with EGC. Received: 23 October 1997 / Accepted: 15 January 1998  相似文献   
102.
Breast Cancer Research and Treatment - To investigate clinical usefulness of eribulin-based neoadjuvant chemotherapy in triple-negative breast cancer (TNBC) patients. Patients in group A...  相似文献   
103.
International Journal of Clinical Oncology - Napabucasin is an oral NAD(P)H:quinone oxidoreductase 1 bioactivatable agent that generates reactive oxygen species, is hypothesised to affect multiple...  相似文献   
104.
An IgM kappa cold agglutinin reacted with cord blood as well as with adult red blood cells (RBC). The agglutinin reacted strongly with papainized and neuraminidase (RDE)-treated RBC. It resembled anti-Me cold agglutinin in these serological findings. However, the activity of this agglutinin against RBC was markedly decreased in the presence of human milk. The data suggest that the agglutinin is directed against a new glycolipid antigen common to human RBC, termed Om antigen.  相似文献   
105.
106.
The benefit of primary angioplasty for acute myocardial infarction (AMI) is limited by the no-reflow phenomenon, resulting in chronic left ventricular (LV) remodeling. The aim of this study was to evaluate the impact of thrombectomy with the Rescue percutaneous thrombectomy catheter on LV function after AMI. We performed a retrospective study comparing conventional angioplasty with the combination of angioplasty and thrombectomy using the Rescue catheter. The study population was comprised of 109 consecutive patients with AMI who underwent angioplasty and thrombectomy and 86 controls treated with conventional angioplasty. Baseline clinical and lesion characteristics were similar in the 2 groups. Postprocedural restoration of normal flow (Thrombolysis In Myocardial Infarction grade 3) was more frequent in the thrombectomy group (82% vs 69%, p = 0.03). No differences were observed in cardiac events, including death, reinfarction, and target vessel revascularization (thrombectomy vs controls, 27% vs 33%; p = 0.44) or changes in ejection fraction (p = 0.22) during 6-month follow-up. The incidence of LV remodeling, defined as an increase in LV end-diastolic volume index of >20%, was significantly lower in the thrombectomy group (22% vs 44%; p = 0.01). Multiple logistic regression analysis revealed that thrombectomy with the Rescue catheter contributed significantly to reduction of both no-reflow and LV remodeling. In the setting of primary angioplasty, adjunctive pretreatment with a rescue catheter reduces the no-reflow phenomenon and protects against LV remodeling.  相似文献   
107.
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