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   2100篇
  免费   144篇
  国内免费   32篇
耳鼻咽喉   8篇
儿科学   87篇
妇产科学   26篇
基础医学   233篇
口腔科学   88篇
临床医学   213篇
内科学   467篇
皮肤病学   40篇
神经病学   151篇
特种医学   188篇
外科学   212篇
综合类   57篇
一般理论   3篇
预防医学   145篇
眼科学   36篇
药学   168篇
中国医学   5篇
肿瘤学   149篇
  2023年   18篇
  2022年   52篇
  2021年   99篇
  2020年   52篇
  2019年   65篇
  2018年   94篇
  2017年   52篇
  2016年   54篇
  2015年   66篇
  2014年   73篇
  2013年   87篇
  2012年   134篇
  2011年   109篇
  2010年   109篇
  2009年   97篇
  2008年   83篇
  2007年   109篇
  2006年   87篇
  2005年   92篇
  2004年   64篇
  2003年   69篇
  2002年   60篇
  2001年   32篇
  2000年   22篇
  1999年   21篇
  1998年   54篇
  1997年   42篇
  1996年   36篇
  1995年   33篇
  1994年   12篇
  1993年   26篇
  1992年   15篇
  1991年   15篇
  1990年   21篇
  1989年   19篇
  1988年   24篇
  1987年   23篇
  1986年   17篇
  1985年   18篇
  1984年   13篇
  1983年   10篇
  1982年   16篇
  1981年   6篇
  1980年   12篇
  1979年   5篇
  1978年   11篇
  1977年   7篇
  1976年   9篇
  1975年   8篇
  1970年   4篇
排序方式: 共有2276条查询结果,搜索用时 78 毫秒
1.

Background

The Lancet Commission on Global Surgery highlighted global surgical need but offered little insight into the specific surgical challenges of children in low-resource settings. Efforts to strengthen the quality of global pediatric surgical care have resulted in a proliferation of partnerships between low-and middle-income countries (LMICs) and high-income countries (HICs). Standardized tools able to reliably measure gaps in delivery and quality of care are important aids for these partnerships. We undertook a systematic review (SR) of capacity assessment tools (CATs) focused on needs assessment in pediatric surgery.

Methods

A comprehensive search strategy of multiple electronic databases was conducted per PRISMA guidelines without linguistic or temporal restrictions. CATs were selected according to pre-defined inclusion criteria. Articles were assessed by two independent reviewers. Methodological quality of studies was appraised using the COSMIN checklist with 4-point scale.

Results

The search strategy generated 16,641 original publications, of which three CATs were deemed eligible. Eligible tools were either excessively detailed or oversimplified. None used weighted scores to identify finer granularity between institutions. No CATs comprehensively included measures of resources, outcomes, accessibility/impact and training.

Discussion

The results of this study identify the need for a CAT capable of objectively measuring key aspects of surgical capacity and performance in a weighted tool designed for pediatric surgical centers in LMICs.

Type of Study

Systematic Review.

Level of Evidence

II.  相似文献   
2.
3.
4.
5.
Effects of capsaicin in temporomandibular joint arthritis in rats   总被引:8,自引:0,他引:8  
Temporomandibular joint (TMJ) arthritis was induced in female Lewis rats by unilateral injection of a suspension of heat-killed Mycobacterium butyricum in paraffin oil into the TMJ. Control rats received paraffin oil by the same route. Arthritic and control rats were pretreated either with capsaicin or denervation of the mandibular branch of the trigeminal nerve. Tissues were collected for neuropeptide extraction and analysed by radioimmunoassay and reverse-phase high-performance liquid chromatography. In all groups, the levels of substance P- (SP), calcitonin gene-related peptide- (CGRP) and neuropeptide Y- (NPY) like immunoreactivity (LI) were higher in the trigeminal ganglia than in the TMJs. In control rats, capsaicin significantly lowered the levels of SP-LI in the trigeminal ganglia and TMJ, but not CGRP-LI and NPY-LI. In the arthritic rats, capsaicin pretreatment significantly lowered the SP-LI and CGRP-LI in the trigeminal ganglia and TMJ, but not the NPY-LI. In the trigeminal ganglia the unilateral denervation significantly lowered SP-LI in control rats, and in arthritic rats SP-LI and CGRP-LI. On the denervated side of the arthritic TMJ, NPY-LI, SP-LI and CGRP- LI were significantly lowered as compared to the arthritic control rats and to the contralateral side. In this rat model, pretreatment with capsaicin and surgical denervation decreased the neuropeptide content in the trigeminal ganglia and the TMJ. The results clearly demonstrate a close interaction between increased neuropeptide release from sensory and sympathetic neurones after induction of arthritis in the rat.  相似文献   
6.
7.
8.
麦冬类中药组织切片计算机三维重建图鉴   总被引:9,自引:0,他引:9  
利用计算机技术实现麦冬类中药组织连续切片三维重建与动态显示,为计算机辅助生药学鉴定和教学提供了新的三维图像技术和研究资料。  相似文献   
9.
用混合粘合剂碳糊电极测定丁螺环酮   总被引:6,自引:1,他引:5  
用混合粘合剂碳糊电极测定丁螺环酮张正奇,曾鸽鸣,刘传桂,黎艳飞(湖南大学化学化工系,长沙410082)碳糊电极无毒,制作方便,表面更新容易,应用电位范围广,在药物分析中已有应用[1~5]。我们在液体石腊中加入添加剂,组成混合粘合剂,可显著改善电极的检...  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