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   1362篇
  免费   115篇
  国内免费   7篇
耳鼻咽喉   3篇
儿科学   3篇
妇产科学   1篇
基础医学   39篇
口腔科学   3篇
临床医学   61篇
内科学   48篇
皮肤病学   6篇
神经病学   22篇
特种医学   6篇
外科学   24篇
综合类   462篇
预防医学   676篇
眼科学   1篇
药学   85篇
中国医学   37篇
肿瘤学   7篇
  2024年   3篇
  2023年   10篇
  2022年   45篇
  2021年   49篇
  2020年   47篇
  2019年   14篇
  2018年   15篇
  2017年   28篇
  2016年   19篇
  2015年   32篇
  2014年   135篇
  2013年   93篇
  2012年   131篇
  2011年   149篇
  2010年   137篇
  2009年   100篇
  2008年   117篇
  2007年   88篇
  2006年   66篇
  2005年   56篇
  2004年   22篇
  2003年   23篇
  2002年   19篇
  2001年   7篇
  2000年   19篇
  1999年   12篇
  1998年   12篇
  1997年   17篇
  1996年   7篇
  1995年   3篇
  1994年   1篇
  1992年   1篇
  1989年   1篇
  1987年   1篇
  1986年   1篇
  1985年   1篇
  1974年   1篇
  1972年   2篇
排序方式: 共有1484条查询结果,搜索用时 125 毫秒
31.
目的了解新疆生产建设兵团基层医生工作倦怠现况,为稳定西部基层卫生队伍提供理论依据。方法采用多阶段分层抽样方法,用马斯勒倦怠问卷对372名医生进行调查。结果有89.2%的医生出现了中度以上的倦怠感;高工作要求、内部及外部工作资源的缺失导致"情绪衰竭"、"消极工作"和低"个人成就感"的倦怠症状。结论需要从长远规划上,通过定向培养、进修培训、对口支援等措施,降低基层卫生人员的倦怠水平。  相似文献   
32.
分析国内外快速康复服务模式现状,结合国情与医院实际情况,充分利用现有人力资源,从团队建设、路径制定、体系推广、效果评价等方面构建了全院快速康复体系。快速康复体系能够促进患者康复,提升医疗护理质量,实践效果良好。  相似文献   
33.
To touch, to be touched… The subject invites to reflexion when one is valid. What is the case for a person with cerebral palsy? How does she touch? What does she feel when she is being touched, massaged? The article refers, in a more global way, to the question of Touch, linked with our sensibility and our sensory experiences in our first relationships and our self-construction. It gives voice to persons suffering from cerebral palsy in the way of testimonies on their feelings of touch. What does it represent for them? How do they speak of their experiences? Their words questions our practices and our relationship to the other person in therapeutic touch and well-being touch, as well as their implications and complementarities.  相似文献   
34.
The Korean construction industry has experienced poor labor productivity and high accident rates. Previous studies have reported that workers’ mental health can cause negative impacts on work performance; thus, enhancing workers’ psychological conditions would help achieve more productive and safer workplaces. This research aimed to understand the level of psychological conditions of construction field-workers using four categories: (1) stress (occupational stress and stress-coping style), (2) personal temperament, (3) emotional disturbance (depression and trait anxiety), and (4) drinking habits. This research used validated questionnaires commonly used in the field of clinical psychology, surveyed 430 respondents from road, bridge, tunnel, subway, and apartment construction sites in Korea, and analyzed the overall psychological tendency of construction workers with the collaboration of professional clinical psychologists using the Z-test, analysis of variance (ANOVA), and cross-tabulation. The research also investigated how the mental conditions differed according to different working conditions, such as demographic information, employment status, work types, work experience, and wage conditions. The results indicated that construction workers suffer from a high level of stress and showed high inclination for problem-focused coping: impulsive, cautious, and dependent on other people. Two out of five construction workers suffer from depression and experience trait anxiety. More seriously, three out of five workers show alcohol-use problems that require clinical attention. This study also revealed the particular psychological problems that occur under different working conditions. The findings can be used to promote the awareness of the importance of construction workers’ mental well-being and to help in setting targets for improvement.  相似文献   
35.
Slips, trips, and falls (STF) represent a serious hazard to workers and occupants in many industries, homes, and communities. Often, the cause of a STF incident is multifactorial, encompassing human, environmental, and task risk factors. A STF-related disability can greatly diminish the occupational capability and quality of life of individuals in both the workplace and the home. Countering STF hazards and risks both on and off the job and on all aspects of control measures is a “total worker safety” matter, a challenging yet tangible undertaking. As the federal organization responsible for conducting research for the prevention of work-related injuries in the United States, the National Institute for Occupational Safety and Health (NIOSH) has been conducting research on STF controls for some decades. Many NIOSH research outcomes have been utilized for STF prevention in workplaces, with potential for prevention in homes as well. This paper summarizes the concept of total worker safety for STF control, NIOSH priority research goals, major activities, and accomplishments, and some emerging issues on STF. The strategic planning process for the NIOSH research goals and some identified research focuses are applicable to the development and implementation of global STF research goals.  相似文献   
36.
The aim of this study was (a) to develop an assessment tool (the Democritos Movement Screening Tool for Preschool Children – DEMOST-PRE), designed to provide preschool educators, clinicians and researchers with information about assessment and screening of the motor proficiency of children aged 4–6 years, as well as the development and control of movement programmes and (b) to assess its factorial validity. First, tool's content and face validity were established and its final structure was determined. Then, the DEMOST-PRE was administered to 435 children (197 girls) aged 48–71 months (M = 60.48 months, SD = 6.98). The factor analysis conducted revealed two distinct components. Present evidence combined with the DEMOST-PRE administrative traits make it promising for preschool aged children's assessment.  相似文献   
37.
The high frequency of fall accidents is a serious problem in Japan. Thus, more stringent countermeasures for preventing falls from scaffolds were developed and incorporated into institutional guidelines. These countermeasures aim to decrease deaths caused by falls from scaffolds. Despite the improvements in such measures, however, the rate of accidental fall deaths remains high in Japan’s construction industries. To improve the rigor of the countermeasures, a committee was established in our institute by the Japan Ministry of Health, Labour, and Welfare. This committee investigated the regulations applied in other countries and evaluated construction industry compliance with existing fall prevention guidelines. After considerable research and discussion, the Occupational Safety and Health Regulations and Guidelines were amended in 2009. The effects of the amended regulations have recently been investigated on the basis of accident reports. This paper describes the investigation and its results. The paper also discusses other research and workplace safety countermeasures for preventing falls and ensuring fall protection from heights.  相似文献   
38.
如何减少医院建设项目的超投资   总被引:1,自引:0,他引:1  
医院建设项目超投资的原因是预算考虑不周,方案制定不细,从而在源头埋下隐患。如何把预算做得周密严谨,如何把握好建筑布局与运行管理和成本的关系,是检验医院管理者的一项艰巨细致的重要工作。可从学习经验、反复论证、把控风险等方面来着手。  相似文献   
39.
目的构建携带小鼠促血管生成素-1(Ang-1)基因的重组腺病毒载体并鉴定。方法化学合成小鼠Ang-1基因经PCR扩增后亚克隆至穿梭质粒,重组质粒转化感受态细胞,所得转化子经PCR电泳分析并测序鉴定,携带外源基因的腺病毒穿梭质粒与携带腺病毒大部分基因组的辅助包装质粒共转染人胚肾细胞系HEK 293细胞,反复冻融获取重组腺病毒,终点稀释法测定重组腺病毒滴度,所得腺病毒转染293T细胞48 h收集培养上清,通过Western Blot分析Ang-1蛋白的表达。结果 PCR产物电泳分析可见大小约1.5 kbp的特征性条带,测序结果显示基因序列与Gen Bank提供的Ang-1序列一致,经HEK293细胞包装后腺病毒滴度为1×109pfu/ml,转染293T细胞后培养上清Western Blot分析可见大小58 k D特征性条带,即转染后能分泌正确大小的重组Ang-1蛋白。结论 Ang-1基因重组腺病毒载体可成功构建,为进一步研究Ang-1蛋白对造血干细胞动员及血管新生的作用提供实验依据。  相似文献   
40.
构建不同筛选特性的HBV X基因真核表达载体   总被引:1,自引:0,他引:1  
目的:构建不同筛选特性的两个HBV X基因真核表达载体.方法:从质粒pEcob6中PCR扩增HBV X全基因,利用pCEP4和pcDNA3.1( )两者多克隆位点的特点,选用pGEM(R)-T Easy Vector构建中间载体pEasy-X,分别酶切后连接特异性片段构建载体pCEP4-X和pcDNA3.1( )-X.结果:从质粒pEcob6成功PCR扩增出HBV X全基因并克隆至质粒pEasy-X,酶切、PCR及测序均证实真核表达载体质粒pCEP4-X和pcDNA3.1( )-X构建成功.结论:具有不同筛选特性的两个HBVX基因真核表达载体业已成功构建.  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