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   7617篇
  免费   933篇
  国内免费   78篇
耳鼻咽喉   109篇
儿科学   157篇
妇产科学   93篇
基础医学   307篇
口腔科学   130篇
临床医学   778篇
内科学   1358篇
皮肤病学   62篇
神经病学   391篇
特种医学   138篇
外国民族医学   1篇
外科学   803篇
综合类   595篇
预防医学   2385篇
眼科学   55篇
药学   822篇
  2篇
中国医学   45篇
肿瘤学   397篇
  2024年   7篇
  2023年   160篇
  2022年   203篇
  2021年   365篇
  2020年   410篇
  2019年   455篇
  2018年   460篇
  2017年   414篇
  2016年   305篇
  2015年   308篇
  2014年   511篇
  2013年   701篇
  2012年   452篇
  2011年   498篇
  2010年   366篇
  2009年   321篇
  2008年   328篇
  2007年   361篇
  2006年   288篇
  2005年   257篇
  2004年   254篇
  2003年   194篇
  2002年   191篇
  2001年   162篇
  2000年   119篇
  1999年   92篇
  1998年   75篇
  1997年   53篇
  1996年   66篇
  1995年   36篇
  1994年   23篇
  1993年   36篇
  1992年   20篇
  1991年   25篇
  1990年   21篇
  1989年   17篇
  1988年   12篇
  1987年   11篇
  1986年   6篇
  1985年   7篇
  1984年   13篇
  1983年   4篇
  1982年   6篇
  1981年   4篇
  1980年   5篇
  1979年   2篇
  1978年   1篇
  1976年   3篇
排序方式: 共有8628条查询结果,搜索用时 15 毫秒
991.
992.
医院药品DDD数排序分析的原理及利用   总被引:677,自引:55,他引:622  
邹豪  邵元福 《中国药房》1996,7(5):215-217
本文较全面地介绍了WHO推荐使用的以DDD数为指标的药物利用研究方法,对该方法的基本原理和具体方法作了深入的说明,在此基础上,利用DDD数分析方法对1992~1994年军队10家综合性医院的药品消耗进行了统计分析,在分析中本研究尝试使用"日用药金额"作药品费用高低的尺度,并进一步提出了用"相同治疗类别药品日用药金额参考值"(日用药金额)来考察某类药品的用药费用的社会平均水平。  相似文献   
993.
Unexpected out-of-hospital cardiac arrest is in most cases due to ventricular fibrillation or rapid ventricular tachycardia. The usual therapeutic strategy in survivors starts with drug treatment, in case of failure followed by nonpharmacological therapy, which may include catheter ablation, ablative surgery, and finally defibrillator implantation. In most cases, this strategy is long lasting and very expensive. Implantation of a defibrillator as a first choice therapy may be cost effective, especially if the probability of successful drug treatment is low. However, cost-effective aspects have been studied only retrospectively and in models. In 1989 we started a prospective cost-effectiveness analysis of implantation of the automatic implantable cardioverter defibrillator (AICD) as first choice therapy ("early" AICD implantation) in successfully resuscitated postinfarct patients. Evaluation is being done in a randomized way with one group having early AICD implantation and the other group following the usual conventional therapeutic strategy. We compare medical, economic, and quality-of-life aspects. As of June 1992, 46 patients have entered the study. Totally 60 patients will be included. Results are expected in 1993 and will be expressed as cost effectiveness ratios in both study arms.  相似文献   
994.
OBJECTIVE: To explore the feasibility and cost of promoting fruit consumption among primary schoolchildren across Anglesey, a region in North Wales, UK. DESIGN, SETTING AND SUBJECTS: A postal survey of the head teachers of all 51 primary schools across Anglesey to ascertain their attitudes to promoting fruit consumption and current initiatives in place was conducted. This was followed by a 1-week pilot study in a single primary school to assess parents' support and willingness to bear or share costs, to determine children's fruit preferences, and to calculate fruit waste. Finally, the cost to local government of providing a piece of fruit to each primary schoolchild daily was calculated. RESULTS: A 53% response rate was obtained in the postal survey of primary school head teachers. All respondents expressed an interest in participating in future fruit promotion programmes. Of 27 primary schools, 26 that responded (96.3%) had programmes in place in which 18 had adopted specific food policies. In the pilot study at the single Anglesey primary school, a response rate of 97% from parents who expressed support for fruit promotion in school was obtained. Parents expressed their willingness to pay at least 15 pence per day towards fruit provision at break time for their children if such a service was not provided by local government. If local government was to invest in this initiative, the total cost of providing one piece of fruit per day to all primary school children in Anglesey would be 211,000 pounds per annum (2004 prices; 19 pence per child per day). CONCLUSION: This pilot study shows support by teachers and parents for initiatives to encourage primary schoolchildren to eat more fruit. Waste can be minimized by choosing fruit that children prefer, in this study, grapes, apples and oranges. The decision as to whether local government or parents are asked to pay for fruit provision is political, depending on local socioeconomic circumstances, local government priorities, national education and nutrition policies.  相似文献   
995.
中山市登革热预防控制的经济效益分析   总被引:1,自引:0,他引:1  
目的:通过对中山市登革热预防控制进行经济效益分析,为政府建立登革热预防控制和应急机制的常规经济投入及其效益评价提供科学依据。方法:用流行病学方法对中山市登革热预防控制情况进行调查。用比较分析法对登革热预防控制进行经济效益分析。结果:采取常规措施共投入225390元;发生登革热疫情后,共投入疫情调查处理费212197元;病人的总诊疗费用为86770.9元,平均每例为3099.O元;病人及其家属消耗误工费用为15050元,平均每例为537.5元;中山市登革热预防控制费用效益比率为1:5.7。结论:查出中山市登革热预防和控制费用以及登革热预防控制的经济效益;证明该市实施的登革热预防控制策略取得了良好的经济效益。  相似文献   
996.
本文分析了普治、筛治和组合3种常用血防查治方案费用的效应部份和非效应部份的主要构成因素,并建立了以数学模型表达的评价指标.结果显示:普治方案费用效应的决定因素为人群感染率;筛治方案则以人群感染率和治查费用比为主,其次查病方法的敏感性和特异性亦能产生影响;组合方案的费用效应由分别符合前二者之基本规律的两部份构成.作者认为对查治方案的选择必须兼顾方案的防治效果、可供的查治能量大小和费用使用的合理性等诸个方面.  相似文献   
997.
998.
成本核算是医院经济管理的基础,核算工作的质量直接影响医院成本管理的成效.本文在分析医院成本核算现状的基础上,对医疗成本核算在医院管理中的重点问题及医院成本核算管理的改革思路进行了探讨.  相似文献   
999.
At the present time, the current improvement of technical and dosimetric aspects of radiation oncology has to be evaluated in terms of potential benefit for the patient and the society. For this last point of view, specially designed economic analyses must be performed in order to justify the number of resources involved by these technical improvements. If the question is how the current technical procedures could reduce the risk of undesirable side-effects, the response cannot be immediately drawn from the literature. This paper emphasizes the possibility to evaluate the role of side-effects as endpoints of economic analyses when using special models in medical decision making such as Markov's. Only few oncologic situations are reliable to properly analyze the relationship between sophisticated radiation techniques and the incidence of post-radiation complications. These situations should be selected when prospective economic analyses are planned in the field of radiation therapy.  相似文献   
1000.
采用成本法,以福建省和黑龙江省为现场,测算2001年妇幼保健机构妇幼卫生服务项目实际消耗,并对测算结果进行分析讨论。得出重医疗、轻保健的现状导致了妇幼卫生服务工作数量和质量的下降,妇幼保健服务与人群健康水平提高的关系等,并提出保持妇幼保健机构的独立性,调整卫生资源配置方向等建议和意见。  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