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   11482篇
  免费   844篇
  国内免费   204篇
耳鼻咽喉   62篇
儿科学   360篇
妇产科学   53篇
基础医学   1409篇
口腔科学   119篇
临床医学   1022篇
内科学   1700篇
皮肤病学   240篇
神经病学   1096篇
特种医学   415篇
外科学   2619篇
综合类   1162篇
预防医学   373篇
眼科学   218篇
药学   720篇
  3篇
中国医学   396篇
肿瘤学   563篇
  2023年   185篇
  2022年   262篇
  2021年   408篇
  2020年   423篇
  2019年   370篇
  2018年   351篇
  2017年   373篇
  2016年   362篇
  2015年   334篇
  2014年   637篇
  2013年   825篇
  2012年   567篇
  2011年   667篇
  2010年   486篇
  2009年   552篇
  2008年   530篇
  2007年   572篇
  2006年   518篇
  2005年   455篇
  2004年   428篇
  2003年   383篇
  2002年   276篇
  2001年   268篇
  2000年   218篇
  1999年   189篇
  1998年   151篇
  1997年   178篇
  1996年   169篇
  1995年   132篇
  1994年   123篇
  1993年   91篇
  1992年   116篇
  1991年   86篇
  1990年   90篇
  1989年   70篇
  1988年   56篇
  1987年   64篇
  1986年   73篇
  1985年   65篇
  1984年   63篇
  1983年   31篇
  1982年   43篇
  1981年   34篇
  1980年   32篇
  1979年   30篇
  1978年   23篇
  1977年   25篇
  1975年   21篇
  1973年   27篇
  1972年   22篇
排序方式: 共有10000条查询结果,搜索用时 375 毫秒
1.
2.
3.
糖尿病渐以年轻化的趋势呈现,糖尿病周围神经病变(DPN)是糖尿病最常见的慢性并发症之一,因其高致残率严重影响病患的生活品质。本文简单阐述糖尿病周围神经病变的病因,并就中医药的角度对该病的治疗概况进行综述,以期为临床诊治提供新见解和新研究策略。  相似文献   
4.
5.
6.

Background

There is a need for a peripheral nerve model on which surgeons-in-training can simulate the repair of nerve injuries at their own pace. Although practicing on animal models/cadavers is considered the “gold standard” of microsurgical training, the proposed model aims to provide a platform for improving the technical skills of surgical trainees prior to their practice on cadaver/animal models. In addition, this model has the potential to serve as a standardized test medium for assessing the skill sets of surgeons.

Methods

Several formulations of silicone were utilized for the design and fabrication of a model which realizes the hierarchical structure of peripheral nerves. The mechanical properties were characterized via the Universal Testing Machine; the damage caused by the needle on the entry sites was assessed through scanning electron microscopy (SEM).

Results

Mechanical properties of the formulations of silicone were tested to mimic human peripheral nerves. A formulation with 83.3?wt% silicone oil and 0.1?wt% cotton fiber was chosen to be used as nerve fascicles. Both 83.3?wt% silicone oil with cotton fiber and 66.6?wt% silicone oil without fiber provided a microsuturing response similar to that of epineurium at a wall thickness of 1?mm. SEM also confirmed that the entry of the needle did not introduce significant holes at the microsuturing sites.

Conclusions

The proposed peripheral nerve model mimicked human tissues mechanically and cosmetically, and a simulation of the repair of a fifth-degree nerve injury was achieved.  相似文献   
7.
8.
It is important to determine when to use and when to avoid calcineurin inhibitors (CNIs). CNIs are associated with kidney dysfunction in some, but not all, transplant recipients. CNI-sparing protocols have their own drug-specific limitations. Two major clinical series suggest the benefit of routine CNI-sparing approaches, but our review suggests weaknesses in both. Ongoing studies are needed to determine which subgroups of recipients will benefit from CNIs.  相似文献   
9.
人胚雪旺细胞组织工程神经修复坐骨神经缺损的实验研究   总被引:1,自引:0,他引:1  
目的:探索人胚雪旺细胞作为组织工程的种子细胞修复周围神经缺损的可行性。方法:通过组织工程方法用PLGA导管和polyglactin 910纤维负载人胚雪旺细胞预先构置好人工神经,然后用于修复大鼠20mm的坐骨神经缺损,并与神经切断后原位缝合以及用单纯的PLGA导管进行修复的实验组进行对照。通过活体肢体功能观察、靶器官肌肉测量、电生理检测、辣根过氧化物酶示踪、连续组织切片图像分析以及透射电镜等检查神经再生情况。结果:人工神经修复组神经再生良好,效果接近于神经原位缝合组,明显优于单纯的PLGA导管修复组。结论:人胚雪旺细胞构建的人工神经可以修复20mm的周围神经缺损。  相似文献   
10.
Campath-1H (alemtuzumab) induction was used for renal transplantation in combination with sirolimus as immunosuppression. We previously reported a high (28%) rate of early rejection with this regimen, and now report 3-year outcomes. Twenty-nine patients were recipients of either deceased donor or non-HLA (Human Leukocyte Antigen) identical living donor primary renal allografts. Clinical parameters including infection, malignancy, kidney function, and kidney histology were followed prospectively for 3 years. Three-year cumulative graft and patient survival were 96% and 100%, respectively. Twenty patients were maintained on steroid-free immunosuppressive regimens, and 15 patients were maintained on monotherapy for immunosuppression (12 on sirolimus). No serious infectious complications were observed and two patients developed basal cell skin cancer. The 3-year results of our initial pilot study demonstrate good graft (96%) and patient (100%) outcomes. Campath-1H induction has yielded a high proportion of patients maintained on immunosuppressive monotherapy (57%) without serious infectious- and no malignancy-related complications. The reported regimen yielded novel insights into both Campath-1H and sirolimus therapy in renal transplantation. Because of the higher incidence of early rejection, we recommend a modified strategy of immunosuppression including a brief course of a calcineurin inhibitor.  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