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   9195篇
  免费   1123篇
  国内免费   56篇
耳鼻咽喉   24篇
儿科学   131篇
妇产科学   63篇
基础医学   313篇
口腔科学   569篇
临床医学   1296篇
内科学   888篇
皮肤病学   64篇
神经病学   204篇
特种医学   46篇
外科学   407篇
综合类   893篇
现状与发展   2篇
一般理论   23篇
预防医学   4664篇
眼科学   65篇
药学   545篇
  16篇
中国医学   36篇
肿瘤学   125篇
  2024年   47篇
  2023年   288篇
  2022年   442篇
  2021年   648篇
  2020年   616篇
  2019年   495篇
  2018年   410篇
  2017年   424篇
  2016年   415篇
  2015年   427篇
  2014年   634篇
  2013年   859篇
  2012年   561篇
  2011年   601篇
  2010年   501篇
  2009年   386篇
  2008年   395篇
  2007年   348篇
  2006年   337篇
  2005年   278篇
  2004年   221篇
  2003年   188篇
  2002年   138篇
  2001年   106篇
  2000年   94篇
  1999年   80篇
  1998年   65篇
  1997年   54篇
  1996年   44篇
  1995年   37篇
  1994年   25篇
  1993年   21篇
  1992年   16篇
  1991年   15篇
  1990年   24篇
  1989年   15篇
  1988年   24篇
  1987年   5篇
  1986年   11篇
  1985年   21篇
  1984年   6篇
  1983年   5篇
  1982年   5篇
  1981年   6篇
  1980年   8篇
  1979年   4篇
  1976年   5篇
  1975年   4篇
  1974年   5篇
  1973年   5篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
1.
2.
3.
4.
评价天津市各辖区基本公共卫生服务的资源配置效率,寻求有效的资源配置措施和方法,为进一步优化卫生资源配置提供参考依据。方法利用数据包络分析,对天津市16辖区的基本公共卫生服务进行效率评价。结果天津市基本公共卫生服务的资源配置效率整体不高,仅有5辖区达到了规模最优,多数区非DEA有效,且投入过剩与产出不足并存。结论为了达到最优的基本公共卫生服务效率,政府及各级基本公共卫生服务机构必须有效地完善、落实相关政策,优化资源投入结构,统筹地区差异,加强资源供给管理,提高资源利用效率。  相似文献   
5.
6.
7.
Aim:   In the last three decades, the segment of population aged 60 years and older has more than doubled in Brazil. People aged 80 years and older are expected to be the fastest-growing segment in the near future. This aim of this study was to analyze the legal structures currently in place in Brazil and to provide a framework for care policies and practices towards older-adults.
Methods:   This article focuses on past and present major socioeconomic burdens on this segment of the Brazilian population as well as on public achievements to overcome inequities.
Results:   Both the public health and the social security systems have been directed to provide preferential assistance to the aged. Nonetheless, the elderly remain the most impoverished segment of Brazil and carry the burden of an overall lack of specialized services. Moreover, socioeconomic inequalities and population diversity in Brazil affects elderly care, adding complexity to this unique scenario.
Conclusion:   Brazil has adopted legal hallmarks that substantially shifted public practices towards the elderly segment from a philanthropic status to a legitimate right for care and assistance. The demographic transition that took place provides an opportunity for innovative solutions in public policies for older adults in a developing economic environment.  相似文献   
8.
OBJECTIVE: To evaluate the user experience and acceptability of an electronic patient monitoring system. SETTING AND PARTICIPANTS: 822 Military and civilian personnel at a health clinic at a major US military headquarters used an Internet and telephone-based electronic monitoring system to report vaccination-site responses and symptoms after receiving the smallpox vaccination. Focus groups of vaccinees were conducted to help develop a survey about the experience that was distributed to 379 vaccinees (96% completion rate). RESULTS: Users of the electronic monitoring system reported that it was fast and easy to use and reported they would use a system like this again and recommend an electronic monitoring system to a friend or relative. Most users (84%) were comfortable with a physician tracking their vaccine reaction using their electronic reports, but only half (51%) were comfortable with eliminating the post-vaccination follow-up visit with their health-care provider based on their electronic reports. CONCLUSIONS: This electronic monitoring system was well received by vaccinees and allowed health-care providers to track the status of vaccinees. However, vaccinees were not comfortable replacing a physician visit with electronic monitoring, at least for the smallpox vaccination. A monitoring system like this may be useful in public health settings, such as mass vaccination or prophylaxis during a bioterrorism event, a pandemic influenza outbreak, or another public health emergency.  相似文献   
9.
公共关系与新闻传播紧密相连 ,有什么样的新闻传播 ,就有什么样的公共关系。公共关系的活动过程 ,主要就是一个组织与公众之间进行信息传播和沟通的过程。能否有效地利用各种新闻传播媒介 ,造就有利的舆论环境 ,是能否成功地组织开展各类公共关系活动的关键  相似文献   
10.
Objectives: In this study, the authors tested whether electromagnetic interference (EMI) is able to impair correct electrocardiogram analysis and produce false‐positive shock advice from automated external defibrillators (AEDs) when the true rhythm is sinus. Methods: Nineteen healthy subjects were used to test five AEDs available on the Austrian market in a prospective, open, and sequence‐randomized study. The primary outcome variable was the absolute number of shocks advised in the presence of EMI. The secondary outcome was the number of impaired analyses caused by incorrectly detected patient movements or electrode failure. Results: Of 760 tests run, 18 (2.37%) cases of false‐positive results occurred, and two of five AEDs recommended shocks in the presence of sinus rhythm. Of 760 tests run, no electrode failures occurred. There were 27 occurrences (3.55%) of motion detected by an AED in the presence of strong electromagnetic fields. Conclusions: AED models differ in their response to EMI; it may be useful to consider specific safety requirements for areas with such fields present. Working personnel and emergency medical services staff should be informed about potential risks and the possible need for patient evacuation before AEDs are attached and shock recommendations are followed.  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