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   8471篇
  免费   297篇
  国内免费   25篇
耳鼻咽喉   66篇
儿科学   156篇
妇产科学   110篇
基础医学   400篇
口腔科学   127篇
临床医学   2231篇
内科学   631篇
皮肤病学   68篇
神经病学   263篇
特种医学   260篇
外科学   580篇
综合类   1384篇
一般理论   3篇
预防医学   1876篇
眼科学   19篇
药学   377篇
  10篇
中国医学   116篇
肿瘤学   116篇
  2023年   152篇
  2022年   230篇
  2021年   385篇
  2020年   334篇
  2019年   380篇
  2018年   341篇
  2017年   230篇
  2016年   205篇
  2015年   229篇
  2014年   685篇
  2013年   583篇
  2012年   496篇
  2011年   651篇
  2010年   514篇
  2009年   463篇
  2008年   398篇
  2007年   287篇
  2006年   275篇
  2005年   181篇
  2004年   148篇
  2003年   148篇
  2002年   117篇
  2001年   96篇
  2000年   98篇
  1999年   77篇
  1998年   85篇
  1997年   46篇
  1996年   29篇
  1995年   26篇
  1994年   22篇
  1993年   22篇
  1992年   24篇
  1991年   15篇
  1990年   9篇
  1989年   11篇
  1988年   10篇
  1987年   13篇
  1986年   70篇
  1985年   63篇
  1984年   69篇
  1983年   77篇
  1982年   75篇
  1981年   63篇
  1980年   56篇
  1979年   52篇
  1978年   50篇
  1977年   58篇
  1976年   68篇
  1975年   39篇
  1974年   24篇
排序方式: 共有8793条查询结果,搜索用时 31 毫秒
11.
背景 全科医生数量和质量是人力资源管理的两个重要维度,其中,医生数量的新增、保持和流失,是全科人力动态规划、管理和评价的重要考量,也是全科住院医师规范化培训(简称全科住培)的绩效指标。探讨全科住培学员的就业状况及影响因素,可以为今后住培政策和激励机制的制定提供参考,但目前针对非订单定向全科住培学员的相关研究较为缺乏。 目的 了解河南省非订单定向全科住培学员的就业状况,分析学员结业后未从事全科医学相关工作的原因,从而为完善培训管理和人力资源激励机制提供参考。 方法 于2021年8月,采用分层随机整群抽样法,在河南省选取2014—2017年入培且已结业的非订单定向全科住培学员326例进行问卷调查。问卷由课题组自行设计,主要内容为学员的基本信息、全科住培情况、目前工作情况及结业后从事与未从事全科医学相关工作的原因。问卷通过"问卷星"平台发放,由学员自行填写。 结果 共发放问卷326份,回收有效问卷271份(83.1%)。结业后,从事全科医学相关工作者77例(28.4%),从事非全科医学相关工作者194例(71.6%)。多因素Logistic回归分析结果显示,年龄、文化程度、生源类型、全科住培基地所在区域是学员结业后是否从事全科医学相关工作的影响因素(P<0.05)。与结业后未从事全科医学相关工作的学员相比,结业后从事全科医学相关工作学员注册为全科医学专业的比例更高〔70.1%(54/77)比32.0%(62/194),P<0.05〕,在乡镇卫生院/社区卫生服务中心执业的比例更高〔49.4%(38/77)比6.2%(12/194),P<0.05)〕。194例未从事全科医学相关工作的学员中,从事内科学工作者78例(40.2%),从事急诊及危重症医学工作者33例(17.0%),从事外科学工作者17例(8.8%)。不选择从事全科医学相关工作的前3位原因分别为:单位安排〔34.5%(67/194)〕,所在单位没有全科医学科〔29.9%(58/194)〕,薪酬低〔26.8%(52/194)〕。 结论 非订单定向全科住培学员选择从事全科医学相关工作的比例较低,年龄、文化程度、生源类型及基地所在区域是影响因素。建议加大全科医学理念宣传,加快综合医院全科医学科建设,提高全科医生薪酬待遇,以此增加全科医生的职业吸引力。  相似文献   
12.
13.

Background

In the emergency department, rib fractures are a common finding in patients who sustain chest trauma. Rib fractures may be a sign of significant, underlying pathology, especially in the elderly patients where rib fractures are associated with significant morbidity and mortality. To date, no studies have evaluated the ability of ultrasound to detect rib fractures using cadaver models and subsequently use this model as a teaching tool.

Objectives

The purpose of this study was to determine if it is possible to generate rib fractures on cadaver models which could be accurately identified using ultrasound.

Methods

This was a cross-sectional study performed during one session at a cadaver lab. A single hemithorax from four adult cadavers were used as models. Single rib fractures on each of rib five through eight were created. Four subjects, blinded to the normal versus fractured ribs, were asked to identify the presence of a fracture on each rib.

Results

A total of 8 of 16 potential ribs had fractured induced by study staff. Mean accuracy was 55% for all subjects. The overall sensitivity and specificity for detecting rib fractures was 50% (CI: 31.89–68.11) and 59.38% (CI: 35.69–73.55) respectively. The overall PPV and NPV was 55.17% and 54.29% respectively.

Conclusions

In this pilot study, subjects were not able to detect induced rib fractures using ultrasound on cadaver models. The use of this model as a teaching tool in the detection of rib fractures requires further investigation.  相似文献   
14.
As one of the overreaching goals of Healthy People 2030, addressing the social determinants of health (SDOH) to reduce health disparities is a nationwide concern, with objectives informed by interdisciplinary teams of experts. However, there remains much discussion regarding the roles of healthcare providers in addressing SDOH. While current guidance suggests that all members of the healthcare team must be empowered to address SDOH, current guidance explicitly references physicians, nurses, social workers and staff, and do not specifically include pharmacists. While pharmacists are taught about the impact of SDOH in pharmacy curricula, actionable strategies for pharmacists to address SDOH in practice have not been clearly outlined. Pharmacists have multifaceted interactions with patients and may be influential in meeting individual patient needs, identifying social risk factors, and addressing upstream causes of health disparities. This paper proposes a framework for the role of pharmacists in addressing the SDOH through strategies at the patient, practice, and community levels. The concepts presented in this paper are meant to serve as a launch point for discussion and to promote the inclusion of pharmacists in the conversations around sustainable efforts to achieve health equity. This framework is not intended to limit the scope of pharmacists in addressing SDOH – on the contrary, it is our hope that this outline may be used to expand the education of future healthcare professionals regarding their role in addressing the social determinants of health.  相似文献   
15.

Objective

To explore from a gender perspective the association with subjective health of the interaction between education and household arrangements within the framework of social determinants of health placed at the micro and mezzo levels.

Methods

The data comes from the Spanish sample of the European Union Statistics on Income and Living Conditions for 2014. Independent logistic regression models for men and women were run to analyze the association with subjective health of the interaction between education and household arrangements. An additive model was run to assess possible advantages over the interaction approach.

Results

The interaction models show a lower or even no significant effect on health of household arrangements usually negatively associated with health among individuals with high education, displaying specific patterns according to sex.

Conclusions

Health profiles of women and men are more precisely drawn if both social determinants of health are combined. Among the women, the important role was confirmed of both social determinants of health in understanding their health inequalities. Among the men, mainly those with low educational achievement, the interaction revealed that the household was a more meaningful social determinant of health. This could enable the definition of more efficient public policies to reduce health and gender inequalities.  相似文献   
16.
BackgroundThere is limited information about the long-term outcome of obstructive sleep apnea (OSA) diagnosed in children and adolescents for educational and social factors. Here, we estimate the long-term socioeconomic outcome and health care costs of OSA.MethodsThe historical case-control cohort study included Danish individuals with OSA diagnosed in childhood or adolescence between 1994 and 2015. Health care costs and socioeconomic data were obtained from nationwide administrative and health registers. A total of 5419 were diagnosed during this period; of these we traced 1004 patients who we compared with 4085 controls (mean index age, 10.2 years; Standard Deviation (SD), 5.6 years) until the age of 20 years. Controls were matched for age, gender, and residency.ResultsComparing the OSA patient and control groups at age 20 years we found: 1) lower parental educational level; 2) significantly lower educational level also after adjustment for parental educational level; 3) lower school grade-point averages; 4) lower employment rate and lower income, which was not fully compensated when transfer payments were considered; and 5) patients' initial health care costs were higher due to higher morbidity. Patients showed higher mortality rates than controls (Hazard Ratio (HR) = 7.63, 95% CI = 4.87–11.95, P < 0.001).ConclusionsOSA in children and adolescent is associated with a significant influence on morbidity, mortality, educational level, grading, social outcome, and welfare consequences.  相似文献   
17.
18.
This paper analyses the methodological issues inherent in evaluating healthcare education and considers approaches for addressing these.Recent policies have exhorted practitioners to base their practice on evidence; however in healthcare education the evidence base is not extensive. Whilst educational evaluation has advanced in the last decades, standardised designs and toolkits are not available. Each evaluation has different aims and occurs in specific contexts, thus the design has to fit the circumstances, yet meet the challenge of scientific credibility. Indicators of educational processes and outcomes are not scientifically verified; no toolkit of standardised ‘off-the-shelf’ valid, reliable and sensitive measures exists. The evidence base of educational practice is largely derived from small-scale, single case studies; the majority of measures are self-devised, unvalidated tools of unproven reliability, thus meta-synthesis is not appropriate and results are not generalisable. Healthcare educational evaluators need valid and reliable assessments of both knowledge acquisition and its application to practice. The need to establish and explain attribution, i.e. the relationship between educational inputs and outcomes is complex and requires experimental/quasi-experimental design. In addition, educational evaluators face the pragmatic challenge of practice in healthcare contexts, where confounding variables are hard to control and resources are scarce.  相似文献   
19.
This report describes a model for identifying sets of teaching abilities considered to be effective for medical school teaching staff, based on roles teachers assume and functions they are expected to perform as instructors. The specification of these teaching abilities was the first step in the development of a comprehensive course on Medical Instruction at the Basic Institute of Medical and Agricultural Biology of the State University of Sao Paulo, Botucatu, Brazil, where the senior author is employed. The work was based on the assumption that medical school teachers are expected to assume a variety of teaching roles and that identification and specification of the abilities that define their roles can result in more effective and efficient teaching.  相似文献   
20.
Changing issues in the field of preschool education will be discussed, set in the context of two of my studies which have been concerned with children with special needs in 'ordinary' preschool education, one 'pre-Warnock' in Scotland, and the other 'post-Warnock' in the West Midlands. The concept of special needs will then be widened to include children for whom English is a second language, and also gifted children. Finally, the discussion is extended to early education rather than preschool education with a discussion of the dangers of treating preschool education in isolation.  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