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   3195篇
  免费   270篇
  国内免费   13篇
耳鼻咽喉   9篇
儿科学   40篇
妇产科学   27篇
基础医学   353篇
口腔科学   27篇
临床医学   799篇
内科学   268篇
皮肤病学   9篇
神经病学   269篇
特种医学   54篇
外科学   164篇
综合类   186篇
一般理论   2篇
预防医学   1012篇
眼科学   5篇
药学   205篇
中国医学   16篇
肿瘤学   33篇
  2024年   19篇
  2023年   124篇
  2022年   170篇
  2021年   208篇
  2020年   193篇
  2019年   221篇
  2018年   202篇
  2017年   178篇
  2016年   163篇
  2015年   134篇
  2014年   206篇
  2013年   295篇
  2012年   159篇
  2011年   168篇
  2010年   137篇
  2009年   126篇
  2008年   119篇
  2007年   119篇
  2006年   76篇
  2005年   58篇
  2004年   44篇
  2003年   38篇
  2002年   27篇
  2001年   27篇
  2000年   20篇
  1999年   23篇
  1998年   20篇
  1997年   17篇
  1996年   21篇
  1995年   22篇
  1994年   15篇
  1993年   10篇
  1992年   8篇
  1991年   6篇
  1989年   9篇
  1988年   9篇
  1986年   6篇
  1985年   5篇
  1984年   6篇
  1983年   4篇
  1981年   3篇
  1980年   6篇
  1979年   11篇
  1978年   4篇
  1976年   9篇
  1975年   4篇
  1974年   3篇
  1973年   7篇
  1972年   4篇
  1971年   3篇
排序方式: 共有3478条查询结果,搜索用时 15 毫秒
1.
PurposeAccording to the social determinants of health framework, income inequality is a potential risk factor for adverse mental health. However, few studies have explored the mechanisms suspected to mediate this relationship. The current study addresses this gap through a mediation analysis to determine if social support and community engagement act as mediators linking neighbourhood income inequality to maternal anxiety and depressive symptoms within a cohort of new mothers living in the City of Calgary, Canada.MethodsData collected at three years postpartum from mothers belonging to the All Our Families (AOF) cohort were used in the current study. Maternal data were collected between 2012 and 2015 and linked to neighbourhood socioeconomic data from the 2006 Canadian Census. Income inequality was measured using Gini coefficients derived from 2006 after-tax census data. Generalized structural equation models were used to quantify the associations between income inequality and mental health symptoms, and to assess the potential direct and indirect mediating effects of maternal social support and community engagement.ResultsIncome inequality was not significantly associated with higher depressive symptoms (β = 0.32, 95%CI = −0.067, 0.70), anxiety symptoms (β = 0.11, 95%CI = −0.39, 0.60), or lower social support. Income inequality was not associated with community engagement. For the depression models, higher social support was significantly associated with lower depressive symptoms (β = −0.13, 95%CI = −0.15, −0.097), while community engagement was not significantly associated with depressive symptoms (β = 0.059, 95%CI = −0.15, 0.27). Similarly, for the anxiety models, lower anxiety symptoms were significantly associated with higher levels of social support (β = −0.17, 95%CI = −0.20, −0.13) but not with higher levels of community engagement (β = 0.14, 95%CI = −0.14, 0.41).ConclusionThe current study did not find clear evidence for social support or community engagement mediating the relationship between neighbourhood income inequality and maternal mental health. Future investigations should employ a broader longitudinal approach to capture changes in income inequality, potential mediators, and mental health symptomatology over time.  相似文献   
2.
3.
4.
Children with autism spectrum disorder (ASD) demonstrate limited playfulness. Their difficulty engaging in meaningful interaction with others renders playful engagement in social interactions a challenge. Although little direct evidence exists regarding the promotion of these children’s playful engagement, links can be established with many traits cited in play and social interaction studies. This paper presents the results of a conceptual clarification exercise regarding the key behaviours associated with the construct of playful engagement in preschool-aged children with ASD. Behaviours were identified based on hallmark deficits in early social interactions and play of children with ASD. The analysis revealed the following behaviours: positive affect, engagement, imitation, joint attention, initiation of social interaction, social responsiveness, flexibility, child’s laughter in funny situations and giving and reading non-verbal cues. In conclusion, a conceptually coherent stage has been set for exploring the literature regarding interventions to promote the playful engagement of preschool-aged children with ASD.  相似文献   
5.

Introduction

The nature of community pharmacy is changing, shifting from the preparation and distribution of medicines to the provision of cognitive pharmaceutical services (CPS); however, often the provision of traditional services leaves little time for innovative services. This study investigated the time community pharmacists spend on the tasks and activities of daily practice and to what extent they are able to implement CPS-related services in daily practice.

Methods

Self-reporting work sampling was used to register the activities of community pharmacists. A smartphone application, designed specifically for this purpose, alerted participants to register their current activity five times per working day for 6 weeks. Participants also completed an online survey about baseline characteristics.

Results

Ninety-one Dutch community pharmacists provided work-sampling data (7848 registered activities). Overall, 51.5% of their time was spent on professional activities, 35.4% on semi-professional activities, and 13.1% on non-professional activities. The proportion of time devoted to CPS decreased during the workweek, whereas the time spent on traditional task increased.

Discussion and conclusion

This study shows it is feasible to collect work-sampling data using smartphone technology. Community pharmacists spent almost half of their time on semi-professional and non-professional activities, activities that could be delegated to other staff members. In practice, the transition to CPS is hampered by competing traditional tasks, which prevents community pharmacists from profiling themselves as pharmaceutical experts in daily practice.  相似文献   
6.
7.
目的为了探索一套适合我国社区卫生服务机构持续健康发展的护理管理模式,以提高社区护理管理效应。通过专家评定法以及全体护理人员讨论的方法,给予每项护理工作以适当的权重,以此建立社区护理工作绩效量化评价体系,并组织实施。实施后,在社区护理工作方面形成了良好的管理导向,建立了有效的激励机制,提高了护理工作质量、效率和效益。因此,可以认为在社区护理实施工作绩效量化评价体系,是值得推广的一项举措。  相似文献   
8.
In recent years, the surgical profession has attempted to incorporate into clinical practice certain techniques that the airline industry has used to improve safety. These mechanisms have proven to be valuable components of our efforts to ensure that surgical patients receive safe, high-quality care. However, as the authors of “Cost and workforce implications of subjecting all physicians to aviation industry work hour restrictions” note, it would be a mistake to extend aviation's work-hour restrictions to medicine, particularly to resident training programs.  相似文献   
9.
Purpose  There has been increasing interest in the occupational health of workers in small enterprises, especially in developing countries. This study examines the association between psychosocial job characteristics and fatigue, and attempts to identify risk factors for fatigue among workers of small enterprises in southern Taiwan. Methods  A structured questionnaire was administered to workers receiving regular health examinations between August 2005 and January 2006. The questionnaire collected demographic information and data on working conditions, personal health status and life styles. It also collected information on psychosocial job characteristics, fatigue and psychological distress using three instruments. Results  A total of 647 workers with mean age of 43.7 were completed. Probable fatigue was found in 34.6% of the sample. Fatigue was found by multiple logistic regressions to be associated with the lack of exercise, working in shifts, depression score and lack of social support at workplace. Conclusions  This study found associations between life style, psychosocial job characteristics and fatigue. Because the high prevalence of probable fatigue was found in such small enterprises, the authors suggest that a short interview with some quick questionnaires in health checkup for these small enterprise workers are helpful to early detect psychosocial and fatigue problems.  相似文献   
10.
目的:探讨精神疾病患者劳动能力鉴定状况及与其相关问题。方法:分析1998至2002年共187例精神疾病患者的劳动能力鉴定资料,并进行不同年代、不同诊断、不同级别的组问比较。结果:除1998年外,其余各年度基本资料相似;诊断以精神分裂症为主,精神发育迟滞为次;前者的平均年龄最大、病期最短、累计病休时间最长、残疾级别最低,后者反之。结论:劳动能力鉴定应按有关标准执行,但目前仍存在一些有待进一步完善的问题。  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