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   1875篇
  免费   210篇
  国内免费   11篇
耳鼻咽喉   5篇
儿科学   15篇
妇产科学   20篇
基础医学   73篇
口腔科学   17篇
临床医学   176篇
内科学   165篇
皮肤病学   69篇
神经病学   40篇
特种医学   36篇
外科学   65篇
综合类   222篇
预防医学   1103篇
眼科学   6篇
药学   53篇
中国医学   16篇
肿瘤学   15篇
  2024年   2篇
  2023年   25篇
  2022年   44篇
  2021年   75篇
  2020年   90篇
  2019年   60篇
  2018年   77篇
  2017年   73篇
  2016年   59篇
  2015年   76篇
  2014年   134篇
  2013年   171篇
  2012年   126篇
  2011年   118篇
  2010年   123篇
  2009年   88篇
  2008年   83篇
  2007年   92篇
  2006年   81篇
  2005年   60篇
  2004年   67篇
  2003年   46篇
  2002年   36篇
  2001年   33篇
  2000年   24篇
  1999年   17篇
  1998年   21篇
  1997年   12篇
  1996年   16篇
  1995年   19篇
  1994年   19篇
  1993年   43篇
  1992年   23篇
  1991年   15篇
  1990年   4篇
  1989年   9篇
  1988年   8篇
  1987年   6篇
  1986年   4篇
  1985年   3篇
  1984年   3篇
  1983年   2篇
  1982年   2篇
  1981年   3篇
  1980年   2篇
  1977年   1篇
  1976年   1篇
排序方式: 共有2096条查询结果,搜索用时 15 毫秒
1.
2.
目的:构建外科医护人员加速康复外科认知量表并检验其效度及信度。方法:采用文献回顾法和德尔菲法(Delphi)形成初始版量表;采用方便抽样法抽取335名外科医生与外科护士为研究对象,进行量表条目筛选与量表效度及信度检验。结果:“外科医护人员加速康复外科认知量表”由4个维度、19个条目构成。量表水平的内容效度指数为0.88,条目水平的内容效度指数为0.86~1.00;验证性因子分析因子载荷系数为0.69~0.95,χ2/df为3.97、比较拟合指数为0.91、修正拟合指数为0.91、Tucker-Lewis指数为0.89、相对拟合指数为0.86、简约赋范拟合指数为0.75、近似均方根误差为0.12;量表Cronbach'sα系数为0.97,维度的Cronbach'sα系数为0.89~0.96;量表Spearman-Brown系数为0.89,维度的Spearman-Brown系数为0.89~0.95;量表重测信度系数为0.88,维度的重测信度系数为0.70~0.86。结论:外科医护人员加速康复外科认知量表具有良好的效度及信度。  相似文献   
3.
Objectives:The demographic changes in Europe underline the need for an extension of working lives. This study investigates the importance of physical work demands and psychosocial work factors for working beyond the state pension age (65 years).Methods:We combined data from three cohorts of the general working population in Denmark (DWECS 2005 and 2010, and DANES 2008), where actively employed workers aged 55–59 years replied to questionnaires about work environment and were followed until the age of 66 years in the Danish AMRun register of paid employment. Using logistic regression analyses, we calculated prevalence ratios (PR) and 95% confidence intervals (CI) for the association between physical and psychosocial work factors and working beyond state pension age, adjusted for age, sex, cohort, cohabiting, sector, income, vocational education, working hours, lifestyle, and previous sickness absence.Results:Of the 2884 workers aged 55–59 years, 1023 (35.5%) worked beyond the state pension age. Higher physical work demands was associated with a lower likelihood (PR 0.69, 95% CI 0.58–0.82) and a good psychosocial work environment was associated with higher likelihood (average of 7 items: PR 1.81, 95% CI 1.49–2.20) of working beyond state pension age. Stratified analyses did not change the overall pattern, ie, a good overall psychosocial work environment – as well as several specific psychosocial factors – increased the likelihood of working beyond state pension age, both for those with physically active and seated work.Conclusion:While high physical work demands was a barrier, a good psychosocial work environment seems to facilitate working beyond state pension age, also for those with physically active work.  相似文献   
4.
5.
目的探讨手术室工勤员主管和护士长协作管理模式在手术室工勤员管理中的应用效果。方法于2019年开始设置工勤员主管1名,协作护士长进行工勤员管理。评价实施前后管理效果。结果实施协作管理模式后,工勤员月质量考核分、手术室环境卫生检查得分、医护人员及工勤员满意度评分显著高于管理前(均P<0.01),工作缺陷减少。结论工勤员主管和护士长协作管理模式有利于提高手术室工勤员工作质量,提高工勤员和医护人员满意度。  相似文献   
6.
Objective:The aim of this study was to explore the association between occupational exposure to diesel exhaust and polycyclic aromatic hydrocarbons (PAH), respectively, and breast cancer subtypes.Methods:The study included 38 375 women <70 years with incident breast cancer, identified in the Danish Cancer Registry, and 5 breast cancer-free controls per case who were randomly selected from the Danish Civil Registration System and matched on year of birth. Full employment history was obtained for all study subjects from a nationwide pension fund, and exposure to diesel exhaust and PAH was assessed using a job exposure matrix. Conditional logistic regression was used for estimation of odds ratios (OR) with adjustment for reproductive factors and socioeconomic status.Results:No noteworthy associations were observed for overall breast cancer in women exposed to diesel exhaust. However, diesel exhaust modestly elevated the risk of estrogen receptor negative breast tumors before age 50 [OR 1.26, 95% confidence interval (CI) 1.09–1.46]. Duration– and dose–response relationships were further observed for this subtype in this age group. No notable risk patterns were generally observed for PAH exposure.Conclusion:Occupational exposure to diesel exhaust may increase the risk of early-onset estrogen receptor negative breast tumors in women. Future studies exploring this association are warranted.  相似文献   
7.
目的 探索护士、医务社工、志愿者“三位一体”护理服务模式在先天性心脏病患儿中的应用效果。 方法 护士、医务社工、志愿者组成护理团队,对住院先天性心脏病患儿及家庭开展游戏治疗服务、心理关爱服务、慈善救助服务、健康宣讲服务及主题活动服务。 结果 2018年1月至2021年12月,游戏辅导2 897例患儿,心理关爱服务764个家庭,慈善救助1 897例患儿,健康宣讲服务2 149例次。2018~2021年住院患者体验与满意度调查满意率分别为98.47%、98.59%、98.67%、98.79%。护士、医务社工、志愿者均认为提高了沟通能力。 结论 护士、医务社工、志愿者“三位一体”护理服务模式从心理、经济、健康教育等方面为患儿及家属提供服务,有效提高了服务对象满意度。  相似文献   
8.
目的 探讨3D打印导向模板辅助下置入空心钉治疗股骨颈骨折的临床效果。方法 回顾性分析2015年3月至2017年12月在我院诊断为股骨颈骨折且需手术的病人,根据手术方式不同进行分组,每组40例。观察组采用3D打印导向模板植入3枚空心钉,对照组采用传统置钉导向器植入空心钉。两组病人均在骨科牵引床辅助“C”型臂X线机透视下完成手术,比较两组的置钉时间、术中导针穿针次数、术中X线透视次数和术中出血量。测量观察组术中所用置钉长度,并与术前通过3D打印模型测量所得的结果进行比较。结果 80例病人均顺利完成手术,未造成血管、神经损伤。观察组术中所用置钉长度与术前通过3D打印模型测量所得的结果相比,准确率在95%以上;观察组病人的置钉时间明显短于对照组,术中穿针次数、术中平均透视次数、术中出血量明显少于对照组(P<0.05)。结论 3D打印导向模板辅助下置入空心钉治疗股骨颈骨折,有利于缩短手术时间,减少术中出血量,提高手术精度,达到良好的手术治疗效果,值得临床推广。  相似文献   
9.
Transmission in hospital settings of seasonal influenza viruses and novel agents such as the Middle East respiratory syndrome coronavirus (MERS-CoV) is well-described but poorly understood. The characterization of potentially infectious bio-aerosols in the healthcare setting remains an important yet ill-defined factor in the transmission of respiratory viruses. Empiric data describing the distribution of bio-aerosols enable discernment of potential exposure risk to respiratory viruses. We sought to determine the distribution of influenza virus RNA emitted into the air by participants with laboratory-confirmed influenza, and whether these emissions had the potential to reach healthcare workers’ breathing zones. Two-stage cyclone bio-aerosol samplers from the Centers for Disease Control and Prevention – National Institute for Occupational Safety and Health were placed 0.5–1.0 m (near field) and 2.1–2.5 m (far field) from infected patient participants, as well as in the corridor immediately outside their rooms. In addition, healthcare worker participants providing care to infected participants were recruited to wear a polytetrafluoroethylene (PTFE) filter cassette in their breathing zones. Viral RNA was detected from the air emitted by 37.5% of the 16 participants infected with influenza virus and distributed both in near and far fields and in all tested particle sizes (<1 µm, 1–4 µm, and >4 µm). Viral RNA was recovered in droplet nuclei and beyond 1 m from naturally-infected participants in the healthcare setting and from the breathing zone of one healthcare worker. There was no correlation between patient participant nasal viral load and recovery of viral RNA from the air, and we did not identify any significant association between RNA detection from the air and patient demographics or clinical presentation. A more substantial study is required to identify patient determinants of virus emission into the air and delineate implications for evidence-based policy for prevention and control.  相似文献   
10.
Background: As professionals, social workers have a special position in relation to considering the needs ofchildren with cancer and their families. Hence, it is important to recognize the experiences and challenges of socialworkers to improve care of their clients. Method: This study was a qualitative content analysis that aimed to determinea comprehensive understanding of pediatric oncology social workers’ experiences in Iran. In total, 19 social workersparticipated in the study. A purposeful sampling method was applied until reaching data saturation. Data were collectedusing semi-structured interviews and field observations. Then, the gathered data were analyzed through face contentanalysis. The study lasted from 2015 to 2017. Finding: Concepts extracted from social workers’ experiences consistedof the nature of oncology work, lack of professional competence, low organizational support and professional inferioritythat were related to main concept of “exhausting and stressful service”. The results indicated that social workers’involvement in stressful and emotionally demanding situations and facing with professional and organizationalchallenges caused personal exhaustion. Conclusion: In addition to explaining the social workers’ experiences andrelated factors, the results emphasize the importance of taking care of service providers to prevent them becomingstressed and exhausted. It is also important to protect patients from the consequences of stressed and exhausted careproviders so further research is recommended to develop specific intervention.  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