首页 | 官方网站   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   6795篇
  免费   569篇
  国内免费   33篇
医药卫生   7397篇
  2024年   6篇
  2023年   171篇
  2022年   392篇
  2021年   507篇
  2020年   485篇
  2019年   461篇
  2018年   375篇
  2017年   264篇
  2016年   293篇
  2015年   285篇
  2014年   522篇
  2013年   416篇
  2012年   513篇
  2011年   501篇
  2010年   326篇
  2009年   335篇
  2008年   255篇
  2007年   263篇
  2006年   199篇
  2005年   131篇
  2004年   102篇
  2003年   80篇
  2002年   50篇
  2001年   43篇
  2000年   29篇
  1999年   25篇
  1998年   20篇
  1997年   8篇
  1996年   13篇
  1995年   13篇
  1994年   10篇
  1993年   10篇
  1992年   9篇
  1991年   5篇
  1990年   9篇
  1988年   3篇
  1986年   2篇
  1985年   18篇
  1984年   27篇
  1983年   19篇
  1982年   25篇
  1981年   24篇
  1980年   15篇
  1979年   24篇
  1978年   22篇
  1977年   24篇
  1976年   18篇
  1975年   12篇
  1974年   20篇
  1973年   14篇
排序方式: 共有7397条查询结果,搜索用时 15 毫秒
151.
152.
153.
154.
【目的】 探讨学术期刊数字出版产业链中的市场主体利益分配失衡问题的解决方案,以满足各方的合理利益诉求。【方法】 运用文献法、个案研究法等,对我国学术期刊数字出版产业链上、中、下游市场主体之间利益分配失衡的现状及原因进行分析。【结果】 数据库平台企业的双边市场地位与商业模式、学术期刊数字出版产品特性与收费模式、主管部门监管不到位、行政力量推动下的非完全市场化运行机制、版权维护动力不足,以及尊重知识产权意愿不强是当前学术期刊数字出版产业链利益分配失衡的主要原因。【结论】 充分发挥主管单位与行业协会监管职能、对数据库平台企业进行改革、引入区块链技术、构建基于版权保护的利益分配机制等是平衡各方利益的有效对策。  相似文献   
155.
156.
目前世界范围内政府管理公立医院的管理制度及公益性制度安排主要有3种,本文主要比较美国、英国、新加坡等国家公立医院管理体制,探讨国外公立医院公益性制度安排,以期对我国公立医院改革及公立医院回归公益性实现路径提出行之有效的建议.  相似文献   
157.
《Alzheimer's & dementia》2014,10(4):468-476.e3
BackgroundThe Ministry of Health, Labour, and Welfare of the Japanese national government announced a “Five-Year Plan for Promotion of Measures Against Dementia (Orange Plan)” in September 2012. This article described features of the Japanese dementia strategy in comparison with international dementia policies.MethodsAn international comparative study was implemented on national dementia policies to seek suggestions for Japanese national strategy. The study consisted of a bibliographical survey, a field survey, and an online case vignette survey in several countries.ResultsThe Japanese health- and social-care system had multiple access points in the dementia care pathway, as did Australia, France, South Korea, and the Netherlands. Contrary to Japan, a simplified access point was observed in Denmark, England, and Sweden. The Orange Plan aimed to establish specific health-care services, social-care services, and the coordination of agencies for persons with dementia. However, fragmentation remains in the dementia care pathway.ConclusionThe national government should examine fundamental revisions in health, social-care services, and advocacy in joint initiatives with Alzheimer's Association Japan to improve the national dementia strategy.  相似文献   
158.
《Vaccine》2018,36(36):5449-5453
The world was never so close to reach the polio eradication: only 37 cases notified in 2016 in only three countries, but the game is not yet at the end. The risk of polio outbreaks in the EU is smaller than it has ever been in the past, but it is not so small that we can ignore it. The EU MS must remain alert and plan and prepare for managing polio events or outbreaks because of the possible dire consequences. The IPV only vaccination schedule universally applied in EU has achieved satisfactory coverage, but constantly leaving small accumulating pockets of susceptible individuals. Moreover the IPV only schedule is not an absolute barrier against poliovirus silent transmission as demonstrated in the recent Israel outbreak. The availability of annually revised S.O.P. from WHO GPEI on the identification and response of a polio event, without local poliovirus transmission or a polio outbreak with sustained transmission, helps and challenge EU countries to update their polio national preparedness plans. The EU/EEA area, in fact, is a peculiar area regarding the polio risk both for its vaccination policy, the large polio vaccines manufactures and the constant immigration from areas at polio high risk, but also EU include cultural and financial potentials crucial to sustain the polio end game strategy and reach the benefit of a world without polio risk. Poliovirus eradication will continue to be challenged as long as there is the worldwide presence of polioviruses in laboratories and vaccine production plants. Most of the world’s OPV vaccines are produced in the EU and many laboratories and research centers store and handle polio viruses. EU Member States are engaged actively in implementing the poliovirus biocontainment plans that are part of the polio eradication strategy and to certify the destruction of poliovirus strains and potentially contaminated biological materials.  相似文献   
159.
《Vaccine》2018,36(39):5811-5818
Globally, infant and childhood vaccine uptake rates are not high enough to control vaccine preventable diseases, with outbreaks occurring even in high-income countries. This has led a number of high-, middle-and low income countries to enact, strengthen or contemplate mandatory infant and/or childhood immunization to try to address the gap. Mandatory immunization that reduces or eliminates individual choice is often controversial. There is no standard approach to mandatory immunization. What vaccines are included, age groups covered, program flexibility and rigidity e.g. opportunities for opting out, penalties or incentives, degree of enforcement, and whether a compensation program for causally associated serious adverse events following immunization exists vary widely. We present an overview of mandatory immunization with examples in two high- and one low-income countries to illustrate variations, summarize limited outcome data related to mandatory immunization, and suggest key elements to consider when contemplating mandatory infant and/or child immunization. Before moving forward with mandatory immunization, governments need to assure financial sustainability, uninterrupted supply and equitable access to all the population. Other interventions may be more effective and less intrusive than mandatory. If mandatory is implemented, this needs to be tailored to fit the context and the country’s culture.  相似文献   
160.
Purpose of the studyThe prevalence of frailty is expected to increase worldwide in parallel with demographic ageing. Despite this, little is known about the prevalence in different populations particularly community-based samples. This cross-sectional study evaluates the prevalence of frailty in a community-dwelling older adult population and describes a methodology to plan community-based interventions.MethodologyA random sample of 1331 older adults, resident in the Lazio-Region of Italy, were screened by trained public health nurses (PHNs) by administering a validated questionnaire (the Functional Geriatric Evaluation questionnaire). Prevalence of frailty was calculated using the Final Synthetic Score derived from the questionnaire’s Final Score. Variables associated with frailty were selected through univariate and multivariate statistical analysis.ResultsPrevalence of frail (FS  10,≤50) and very frail (FS < 10) individuals was 13.9% and 7.6% respectively. Variables associated with frailty were age (older than 85 years), disability, living alone or the presence of a paid carer, lower education and neurological disorders like stroke, dementia, Parkinson disease and other neuropsychiatric diseases; Anaemia or cancer were also associated with a higher prevalence of frailty.DiscussionThe study provide a comprehensive picture of the prevalence of frailty and factors associated to this condition in community-dwelling older adults. On the basis of the study results, a plan of community-based services could address the needs of care of the elderly population. A trained team of PHNs may be the most appropriate personnel to carry out multidimensional frailty assessment in this setting.  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-23

京公网安备 11010802026262号