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   370篇
  免费   20篇
  国内免费   2篇
耳鼻咽喉   5篇
儿科学   18篇
妇产科学   12篇
基础医学   23篇
口腔科学   14篇
临床医学   45篇
内科学   108篇
皮肤病学   25篇
神经病学   5篇
特种医学   13篇
外科学   58篇
综合类   5篇
预防医学   14篇
眼科学   10篇
药学   11篇
中国医学   3篇
肿瘤学   23篇
  2023年   6篇
  2022年   9篇
  2021年   13篇
  2020年   6篇
  2019年   14篇
  2018年   19篇
  2017年   10篇
  2016年   23篇
  2015年   22篇
  2014年   19篇
  2013年   22篇
  2012年   32篇
  2011年   28篇
  2010年   23篇
  2009年   10篇
  2008年   17篇
  2007年   27篇
  2006年   23篇
  2005年   16篇
  2004年   10篇
  2003年   12篇
  2002年   8篇
  2001年   2篇
  2000年   2篇
  1999年   3篇
  1998年   2篇
  1997年   1篇
  1995年   1篇
  1993年   2篇
  1992年   3篇
  1991年   1篇
  1989年   2篇
  1988年   1篇
  1987年   1篇
  1986年   1篇
  1985年   1篇
排序方式: 共有392条查询结果,搜索用时 0 毫秒
1.
2.
3.
After surgical therapy of diffuse pigmented villonodular synovitis (DPVNS), recurrence is seen in almost half of the patients. The effectiveness of radiosynovectomy (RSV) in preventing recurrence and complaints of DPVNS is well known. Elbow involvement in DPVNS is a very rare condition; therefore, RSV in elbow hasn’t been experienced widely. The aim of this case report is to show the effectiveness of RSV with rhenium-186 (Re-186) sulfide colloid. We applied Re-186 sulfide colloid to the elbow joint of DPVNS patients six weeks after arthroscopic synovectomy. As a result, the patient did not have any complaints, and our findings are compatible with residue or recurrence on magnetic resonance imaging (MRI) in sixth and twentieth month controls after administration. We concluded that Re-186 is an effective adjuvant therapy for the prevention of recurrence and complaints.  相似文献   
4.
5.
6.
Cardiopulmonary bypass (CPB) contributes to the secretion of anti-inflammatory cytokines that mediate the inflammatory response observed during open heart surgery. In addition to many factors, type of anesthesia management affects immune response and central nervous system in cardiac surgery. The aim of this study was to assess the effect of propofol versus desflurane anesthesia on systemic immune modulation and central nervous system on patients undergoing coronary artery bypass grafting. Forty patients undergoing elective coronary artery bypass graft surgery with CPB were included in this prospective randomized study. Patients were allocated to receive propofol (n?=?20) or desflurane (n?=?20) for maintenance of anesthesia. The blood samples for IL-6, IL-8, TNF-α, and S100β were drawn just prior to the operation before the induction of anesthesia, second before cardiopulmonary bypass, third after CPB, fourth 4 h postoperatively at the ICU. Major finding in our study is that S100β levels were lower in propofol group when compared to desflurane anesthesia. And also immune reaction was less in patients exposed to desflurane anesthesia when compared to propofol anesthesia as indicated by lower plasma concentrations of IL-8 and IL-6. Propofol is more preferable in terms of S100β for anesthetic management for CABG.  相似文献   
7.
8.
Among the different cardiovascular risk factors, lipid abnormalities dominate the high mortality in chronic ambulatory peritoneal dialysis patients. So far, no data comparing the effect of standard glucose-containing, amino acid-containing, and icodextrin-containing peritoneal dialysis solutions on serum lipid concentrations in a chronic ambulatory peritoneal dialysis population are available. To determine the effect of peritoneal dialysis solutions on parameters of lipid metabolism, 67 subjects who had continued their usual dialysis for the last six months were enrolled in the study. Group A consisted of 18 patients who were receiving only glucose-based peritoneal dialysis solutions, group B consisted of 18 patients who were receiving glucose and amino acid-based peritoneal dialysis solutions, and group C consisted of 31 patients who were receiving glucose and icodextrin-based peritoneal dialysis solutions. Serum lipid parameters including total cholesterol, low-density lipoprotein, high-density lipoprotein, triglyceride, and lipoprotein (a) were determined in all groups. No significant difference in serum lipid parameters was found between groups A, B, and C. These results demonstrate the lack of the effect of amino acid or icodextrin-based peritoneal solutions on dyslipidemia of CAPD patients.  相似文献   
9.

Purpose

The present study aimed to evaluate whether combining the magnetic-activated cell sorting (MACS) with density-gradient (DG) or swim-up (SU) sperm separation techniques can improve sperm selection to obtain higher quality spermatozoa.

Methods

Two commonly used sperm selection techniques, SU and DG, were compared to MACS combined with either SU or DG. Spermatozoa obtained from normozoospermic (n?=?10) and oligozoospermic (n?=?10) cases were grouped as SU, DG, SU+MACS, and DG+MACS followed by the analysis of sperm morphology, motility, DNA integrity, and the levels of Izumo-1 and PLCZ proteins.

Results

Although spermatozoa obtained by SU or DG when combined with MACS have improved aspects when compared to SU or DG alone, results did not reach a statistically significant level. Moreover, separation with MACS caused a significant loss in the numbers of total and rapid progressive spermatozoa.

Conclusions

Considering the cost/benefit ratio, MACS application together with traditional techniques may only be preferred in certain cases having higher concentrations of spermatozoa, but it does not seem to be an ideal and practical sperm selection technique for routine use.
  相似文献   
10.
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