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   10505篇
  免费   982篇
  国内免费   151篇
耳鼻咽喉   42篇
儿科学   303篇
妇产科学   89篇
基础医学   951篇
口腔科学   164篇
临床医学   2005篇
内科学   887篇
皮肤病学   62篇
神经病学   635篇
特种医学   252篇
外科学   626篇
综合类   1450篇
现状与发展   1篇
一般理论   10篇
预防医学   2848篇
眼科学   74篇
药学   709篇
  10篇
中国医学   255篇
肿瘤学   265篇
  2024年   25篇
  2023年   216篇
  2022年   378篇
  2021年   513篇
  2020年   473篇
  2019年   517篇
  2018年   490篇
  2017年   409篇
  2016年   381篇
  2015年   408篇
  2014年   848篇
  2013年   953篇
  2012年   721篇
  2011年   773篇
  2010年   616篇
  2009年   511篇
  2008年   493篇
  2007年   480篇
  2006年   446篇
  2005年   325篇
  2004年   247篇
  2003年   243篇
  2002年   162篇
  2001年   126篇
  2000年   114篇
  1999年   89篇
  1998年   88篇
  1997年   68篇
  1996年   54篇
  1995年   51篇
  1994年   46篇
  1993年   34篇
  1992年   39篇
  1991年   38篇
  1990年   29篇
  1989年   28篇
  1988年   20篇
  1987年   16篇
  1986年   18篇
  1985年   16篇
  1984年   20篇
  1983年   14篇
  1982年   19篇
  1981年   14篇
  1980年   16篇
  1979年   12篇
  1978年   5篇
  1976年   10篇
  1974年   6篇
  1968年   7篇
排序方式: 共有10000条查询结果,搜索用时 515 毫秒
1.
2.
3.
4.
5.
The objective of this paper was to assess the link between premature mortality and a combination of neighbourhood contextual (environmental and health) and compositional (socioeconomic and demographic) characteristics. We statistically and spatially examined six environmental variables (ultrafine particles, carcinogenic and non-carcinogenic pollutants, pollution released to air, tree cover, and walkability index), six health service indicators (number health providers, breast, colorectal and cervical cancer screening uptake rates, student nutrition program uptake rates, and healthy food index), and eight socioeconomic indicators (total income, Gini coefficient, two age categories – below and above 40 years, proportion of females to males, visible minorities, Indigenous peoples, education, less than grade 9) among 140 neighbourhoods of the City of Toronto in Ontario (Canada). We applied principal component analysis to identify patterns and to reduce the number of explanatory variables into combined component axes that represent unique variation in these confounded and overlapping factors. We then applied regression analysis to model the relationship between the indices of enviro-health and socioeconomics and their potential relationship with premature mortality. Residual spatial analysis was used to investigate any remaining spatial structure (such as neighbourhoods with higher residual premature mortality rates). Neighbourhood Equity Index was correlated with our enviro-health and socioeconomic indices. Premature mortality within neighbourhoods was predicted by poor cancer screenings, pollution, lack of tree canopy, increased uptake of student nutrition programs and high walkability index. A negative association between premature mortality and pollution was associated low walkability index and presence of visible minorities within neighbourhoods. There was some unexplained residual spatial variation in our model of premature mortality - especially along the shores of Lake Ontario and in neighbourhoods with major highways or road corridors: premature mortality in Toronto neighbourhoods was higher than expected along highway-corridor neighbourhoods and shorelines. Our analysis revealed a significant relationship between neighbourhood contextual features – both environmental and health – and premature mortality, suggesting that these contextual components of neighbourhoods can predict rates of urban premature mortality in Toronto.  相似文献   
6.
目的 探讨健康支持性环境中的不同特征变量对四川省农村人群的不同血压水平的影响。方法 采用多阶段整群抽样的方法,随机抽取四川省7个县(区)8400名的18岁以上常住居民为调查对象。问卷调查一般人口学特征、身体活动行为特征和环境等信息。采用标准方法测量身高、体重、腰围和血压。采用无序多分类logistic回归分析。结果 本调查人群中共检出正常高值血压者4270例,检出率为50.83%,标化率为37.02%,平均年龄(56.22±14.89)岁;高血压患者1498例,检出率为17.83%,标化率为7.92%,平均年龄(65.26±11.28)岁。无序多分类logistic回归结果显示,住宿环境好、获得运动方面的健康信息和参与中等强度活动150Symbol~A@300min/周是正常高值血压和高血压人群的共同保护因素;住宿便利(OR=0.789, 95%CI:0.649~0.958, P=0.017)、医疗服务可及性便利(OR=0.686, 95%CI:0.509~0.924, P=0.013)、对健身步道和健身广场满意为高血压人群的保护因素。结论 多途径合理构建健康支持性环境,对农村正常高值血压者和高血压患者具有保护作用,对遏制农村高血压的流行现状起到一定作用。  相似文献   
7.
本文从理论与临床实践2方面总结了占永立教授从咽论治IgA肾病的经验。占教授将Ig A肾病分为3型进行辨证论治:1)肺气不足,热毒扰咽证; 2)脾气虚弱,热邪客咽证; 3)肾阴亏虚,余热留咽证。治疗上以清热解毒利咽为主,兼以扶正,根据病情灵活选方用药,取得较好的临床疗效。  相似文献   
8.
9.
10.
《Enfermería clínica》2020,30(3):136-144
The implementation of Best practice guidelines is effective in improving clinical practice and reducing clinical variability. The Best Practice Guidelines of the Ontario Nurses Association have been implemented in Spain since 2012 following the principles of the Canadian programme of the Best Practice Spotlight Organisations® (BPSO®). The Nursing and Healthcare Research Unit (Investén-isciii) coordinates this programme in Spain, having been nominated BPSO Host by the Ontario Nurses Association.Four strategies were followed: translation of the Best Practice Guidelines, dissemination of same and of the programme, implementation of the Best Practice Guidelines and assessment of the results in competitively selected centres, and, finally, the development of sustainability mechanisms.Implementation is based on the theoretical Knowledge to Action model, which establishes a cycle of 6 phases: identification of the problem and training of selected BPSO®; adaptation to the local context; assessment of facilitators and barriers; adaptation and implementation of interventions; monitoring and evaluation of results, and sustainability. Each of these phases incorporate evidence-based elements that promote the effectiveness of implementation, such as the competitive selection of candidates to participate in the programme, selection by the institution of the guidelines to be implemented, leadership by nurses with a multi-professional approach, planning of the process from work structures that are non-vertical but with the support of the institution, the simultaneous use of multiple strategies, ongoing assessment and feedback of results. All of which is mentored and supported by the BPSO Host.There are currently 27 institutions in Spain of different characteristics that implement a total of 20 clinical guidelines. The scope and structure of the programme has recently been extended with regional BPSO Host coordinating centres, which has brought the number of institutions to 36 and the number of implemented clinical guidelines to 22.The programme has had a positive impact on organisations and the system, on care processes and on patient health. This is evidenced by enriched evidence-based professional practice, the promotion of collaborative networking and by improved patient health outcomes and the quality of care provided.  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