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   159篇
  免费   10篇
  国内免费   3篇
儿科学   1篇
妇产科学   1篇
基础医学   15篇
口腔科学   1篇
临床医学   17篇
内科学   29篇
神经病学   6篇
特种医学   27篇
外科学   11篇
综合类   12篇
预防医学   36篇
眼科学   1篇
中国医学   5篇
肿瘤学   10篇
  2023年   3篇
  2022年   8篇
  2021年   10篇
  2020年   6篇
  2019年   13篇
  2018年   17篇
  2017年   6篇
  2016年   7篇
  2015年   5篇
  2014年   11篇
  2013年   12篇
  2012年   7篇
  2011年   9篇
  2010年   8篇
  2009年   6篇
  2008年   6篇
  2007年   8篇
  2006年   10篇
  2005年   5篇
  2004年   1篇
  2003年   1篇
  2002年   2篇
  2001年   2篇
  2000年   1篇
  1999年   1篇
  1997年   1篇
  1996年   1篇
  1995年   1篇
  1989年   1篇
  1985年   1篇
  1984年   1篇
  1983年   1篇
排序方式: 共有172条查询结果,搜索用时 15 毫秒
1.
CTI和3G技术在120急救指挥中心的应用   总被引:1,自引:1,他引:0  
许崧 《医疗卫生装备》2007,28(6):48-49,51
介绍了120急救指挥中心的结构、计算机电话一体化和卫星定位系统、地理信息系统以及无线通讯系统的功能,分析了CTI和3G技术在120急救指挥中心的实际应用和取得的成效。  相似文献   
2.
3.
Sound exposure data are central for any intervention study. In the case of utilitarian mobility, where studies cannot be conducted in controlled environments, exposure data are commonly self-reported. For short-term intervention studies, wearable devices with location sensors are increasingly employed. We aimed to combine self-reported and technically sensed mobility data, in order to provide more accurate and reliable exposure data for GISMO, a long-term intervention study. Through spatio-temporal data matching procedures, we are able to determine the amount of mobility for all modes at the best possible accuracy level. Self-reported data deviate ±10% from the corrected reference. Derived modal split statistics prove high compliance to the respective recommendations for the control group (CG) and the two intervention groups (IG-PT, IG-C). About 73.7% of total mileage was travelled by car in CG. This share was 10.3% (IG-PT) and 9.7% (IG-C), respectively, in the intervention groups. Commuting distances were comparable in CG and IG, but annual mean travel times differ between  = 8,458 min (σ = 6,427 min) for IG-PT,  = 8,444 min (σ = 5,961 min) for IG-C, and  = 5,223 min (σ = 5,463 min) for CG. Seasonal variabilities of modal split statistics were observable. However, in IG-PT and IG-C no shift toward the car occurred during winter months. Although no perfect single-method solution for acquiring exposure data in mobility-related, naturalistic intervention studies exists, we achieved substantially improved results by combining two data sources, based on spatio-temporal matching procedures.  相似文献   
4.
The aim of this study was to explore effects of a major urban reconstruction on physical activity (PA) behavior by comparing PA intensity hotspots before and after the tunneling of a highway with a new infrastructure prioritized for walking and cycling. In total, 126 individuals participated before and after the tunneling. GPS loggers and accelerometers were used to assess location and PA levels. A geographic information system (GIS) was used to perform optimized hotspot analyses on PA data, both on transport and stationary data points. The results showed several changes in PA hotspots on trip data, even if total PA levels did not change. At follow-up, PA intensity hotspots were more connected, with the new infrastructure as a central connection. This was true for higher and lower educated individuals. Therefore, if changes in the built environment do not result in changes on population-level outcomes, this does not imply that they have no impact on behavior.  相似文献   
5.
Purpose: The purpose of this study is to quantitatively assess the effect of 6 months of supervised adapted physical activity (APA i.e. physical activity designed for people with special needs) on spatio-temporal and kinematic parameters of gait in persons with Multiple Sclerosis (pwMS).

Methods: Twenty-two pwMS with Expanded Disability Status Scale scores ranging from 1.5 to 5.5 were randomly assigned either to the intervention group (APA, n?=?11) or the control group (CG, n?=?11). The former underwent 6 months of APA consisting of 3 weekly 60-min sessions of aerobic and strength training, while CG participants were engaged in no structured PA program. Gait patterns were analyzed before and after the training using three-dimensional gait analysis by calculating spatio-temporal parameters and concise indexes of gait kinematics (Gait Profile Score – GPS and Gait Variable Score – GVS) as well as dynamic Range of Motion (ROM) of hip, knee, and ankle joints.

Results: The training originated significant improvements in stride length, gait speed and cadence in the APA group, while GPS and GVS scores remained practically unchanged. A trend of improvement was also observed as regard the dynamic ROM of hip, knee, and ankle joints. No significant changes were observed in the CG for any of the parameters considered.

Conclusions: The quantitative analysis of gait supplied mixed evidence about the actual impact of 6 months of APA on pwMS. Although some improvements have been observed, the substantial constancy of kinematic patterns of gait suggests that the full transferability of the administered training on the ambulation function may require more specific exercises.
  • Implications for rehabilitation
  • Adapted Physical Activity (APA) is effective in improving spatio-temporal parameters of gait, but not kinematics, in people with multiple sclerosis.

  • Dynamic range of motion during gait is increased after APA.

  • The full transferability of APA on the ambulation function may require specific exercises rather than generic lower limbs strength/flexibility training.

  相似文献   
6.
7.
8.
A cholera outbreak began in Haiti during October, 2010. Spatiotemporal patterns of household-level cholera in Ouest Department showed that the initial clusters tended to follow major roadways; subsequent clusters occurred further inland. Our data highlight transmission pathway complexities and the need for case and household-level analysis to understand disease spread and optimize interventions.  相似文献   
9.
现代120急救指挥中心的设计与建设体会   总被引:1,自引:0,他引:1  
许崧 《重庆医学》2006,35(17):1620-1621
目的 采用现代技术,建立一个高水平的120急救指挥中心。方法 将计算机网络、卫星定位系统、地理信息系统、计算机电话一体化、数字录音系统有机结合起来,成为一个安全、可靠的综合实体。结果 120急救指挥调度目标清晰,有条不紊,服务质量更高。结论 现代技术能有效提高120急救指挥中心的急救效率和成功率。  相似文献   
10.
目的探讨结直肠术前格拉斯哥预后评分(GPS)与结直肠癌患者预后的关系。方法收集2009年3月至2014年3月广州市第一人民医院胃肠外科收治且行根治性手术的205例结直肠癌患者临床病理及随访2年后的生存资料,化疗之前检测C-反应蛋白、清蛋白、癌胚抗原(CEA)、血浆纤维蛋白原(FIB)以及外周血中性粒细胞/淋巴细胞计数(NLR),并对检测结果进行统计分析。结果不同CEA、FIB、NLR分组之间以及肿瘤分期组间GPS评分差异有统计学意义(P0.05)。患者术前CEA升高(OR=2.255,95%CI:1.092~4.658),肿瘤分期越高(OR=7.750,95%CI:3.539~16.973),GPS评分越高(OR=2.911,95%CI:1.298~6.529),术后患者死亡或者复发风险越高。结论术前GPS评分是结直肠癌预后的独立危险因素,GPS评分高提示预后不良。  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