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   2708篇
  免费   174篇
  国内免费   9篇
耳鼻咽喉   33篇
儿科学   123篇
妇产科学   56篇
基础医学   344篇
口腔科学   57篇
临床医学   273篇
内科学   622篇
皮肤病学   86篇
神经病学   308篇
特种医学   143篇
外科学   390篇
综合类   21篇
预防医学   164篇
眼科学   21篇
药学   115篇
中国医学   8篇
肿瘤学   127篇
  2023年   16篇
  2022年   43篇
  2021年   58篇
  2020年   35篇
  2019年   65篇
  2018年   63篇
  2017年   56篇
  2016年   59篇
  2015年   75篇
  2014年   83篇
  2013年   137篇
  2012年   168篇
  2011年   129篇
  2010年   104篇
  2009年   89篇
  2008年   114篇
  2007年   118篇
  2006年   112篇
  2005年   108篇
  2004年   125篇
  2003年   97篇
  2002年   86篇
  2001年   66篇
  2000年   64篇
  1999年   52篇
  1998年   39篇
  1997年   49篇
  1996年   42篇
  1995年   35篇
  1994年   38篇
  1993年   42篇
  1992年   48篇
  1991年   40篇
  1990年   44篇
  1989年   49篇
  1988年   54篇
  1987年   46篇
  1986年   30篇
  1985年   35篇
  1984年   18篇
  1983年   20篇
  1982年   18篇
  1981年   23篇
  1980年   9篇
  1979年   13篇
  1978年   14篇
  1977年   12篇
  1976年   16篇
  1975年   7篇
  1973年   5篇
排序方式: 共有2891条查询结果,搜索用时 15 毫秒
1.
Prevention Science - This study aimed to evaluate the effectiveness of the drug and violence resistance educational program (PROERD) on short-term secondary outcomes, such as intentions to use...  相似文献   
2.
Cidofovir is an acyclic nucleoside phosphonate with broad-spectrum activity against DNA viruses, including human papilloma virus (HPV). However, data on the efficacy of cidofovir in an immunosuppressive setting remain contradictory. We report for the first time on the promotion of the healing of recalcitrant warts in a patient with myelodysplastic syndrome with intravenous cidofovir treatment.  相似文献   
3.
4.
Preoperative screening for potential cardiac complications is crucial in making rational decisions about surgery. A number of classification schemes are available to aid the primary care physician in assessing a patient's perioperative cardiac risk. In general, these schemes enable the physician to place patients in low-risk, moderate-risk and high-risk categories. Patients at low risk can often be safely referred for surgery with minimal preoperative evaluation, while those at potentially high risk frequently need further assessment and medical or surgical treatment of cardiac disease prior to surgery. The classification schemes are most accurate in identifying patients at high risk for perioperative cardiac complications. However, patients with silent underlying cardiac disease are often underclassified with respect to potential risk. For those patients, accurate prediction of perioperative cardiac complications can be challenging.  相似文献   
5.

Background  

Liver transplantation in presence of diffuse portal vein thrombosis is possible by using caval blood as portal inflow, through cavo-portal transposition. However, clinical results are heterogeneous and experimental studies are needed, but similar hemodynamic conditions are difficult to obtain, especially in small animals. Herein we describe a new simple model of cavo-portal transposition in rat.  相似文献   
6.
Isolated pure dislocations of the fifth carpo-metacarpal joint are extremely rare injuries. The dorsal form was described in mere 12 cases. The diagnosis can be easily missed. The lesion is also often overlooked in the routine diagnostic X-ray. Lateral and oblique views are important for the recognition of the true extent of the lesion. Treatment of these injures is still controversial and both closed reduction with percutaneous pinning or open reduction with internal fixation are advocated. The goal of treatment is early reduction and fixation of the metacarpal. Early diagnosis is the key to success. The aim of this paper is to review literature and present two new cases.  相似文献   
7.
8.
The epsilon-sarcoglycan gene (SGCE) on human chromosome 7q21 has been reported to be a major locus for inherited myoclonus-dystonia. Linkage to the SGCE locus has been detected in the majority of families tested, and mutations in the coding region have been found recently in families with autosomal dominant myoclonus-dystonia. To evaluate the relevance of SGCE in myoclonus-dystonia, we sequenced the entire coding region of the epsilon-sarcoglycan gene in 16 patients with either sporadic or familial myoclonus-dystonia. No mutations were found. This study suggests that epsilon-sarcoglycan does not play an important role in sporadic myoclonus-dystonia and supports genetic heterogeneity in familial cases.  相似文献   
9.
10.
Our recent experience with peritonitis in patients over the age of 55 years undergoing continuous ambulatory peritoneal dialysis between 1979 and 1989 is reviewed. Thirty-seven patients in this age group underwent Tenckhoff catheter insertion. Severe catheter-related peritonitis occurred at a rate of 1.41 episodes per patient per year. Overall, there were 61 episodes of peritonitis in 31 patients, with an overall mortality rate of 7%. When systemic signs of sepsis were present, this rate rose to 25%. All deaths were associated with fungal, pseudomonal, or polymicrobial infections. Management of these infections may require aggressive measures including repeated laparotomy for control of sepsis.  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