全文获取类型
收费全文 | 4617篇 |
免费 | 423篇 |
国内免费 | 53篇 |
学科分类
医药卫生 | 5093篇 |
出版年
2024年 | 24篇 |
2023年 | 123篇 |
2022年 | 196篇 |
2021年 | 272篇 |
2020年 | 246篇 |
2019年 | 263篇 |
2018年 | 227篇 |
2017年 | 190篇 |
2016年 | 162篇 |
2015年 | 156篇 |
2014年 | 334篇 |
2013年 | 489篇 |
2012年 | 257篇 |
2011年 | 309篇 |
2010年 | 213篇 |
2009年 | 218篇 |
2008年 | 207篇 |
2007年 | 181篇 |
2006年 | 160篇 |
2005年 | 118篇 |
2004年 | 113篇 |
2003年 | 53篇 |
2002年 | 63篇 |
2001年 | 43篇 |
2000年 | 41篇 |
1999年 | 34篇 |
1998年 | 37篇 |
1997年 | 30篇 |
1996年 | 33篇 |
1995年 | 37篇 |
1994年 | 31篇 |
1993年 | 27篇 |
1992年 | 22篇 |
1991年 | 23篇 |
1990年 | 19篇 |
1989年 | 16篇 |
1988年 | 16篇 |
1987年 | 21篇 |
1986年 | 14篇 |
1985年 | 17篇 |
1984年 | 10篇 |
1983年 | 4篇 |
1982年 | 6篇 |
1981年 | 6篇 |
1980年 | 8篇 |
1979年 | 8篇 |
1977年 | 5篇 |
1975年 | 2篇 |
1974年 | 3篇 |
1973年 | 3篇 |
排序方式: 共有5093条查询结果,搜索用时 15 毫秒
1.
Jeffrey H. Coben MD 《Academic emergency medicine》2002,9(11):1176-1183
OBJECTIVE: To obtain consensus among a panel of experts on performance measures useful for evaluating the quality of hospital-based domestic violence (DV) programs. METHODS: The Delphi process of consensus development was used with a panel of 18 experts including DV researchers, program planners, and advocates. Three rounds were conducted over a period of six months, with each round involving the completion of a written questionnaire. Panelists were instructed to concentrate on structure and process measures of DV program performance. Health outcome measures were not considered. During each round, panelists rated (scale of 1-5) their level of agreement with each measure, in terms of the measure's usefulness for evaluating hospital-based DV programs. Data were entered into SPSS on a personal computer and frequency distributions, measures of central tendency, and variance were computed for each measure. Consensus development was defined as a reduction in the item-specific variance from one round to the next. RESULTS: A total of 37 performance measures were agreed upon. These measures fell within nine different domains of DV program activities, including: Policies and Procedures, Hospital Physical Environment, Hospital Cultural Environment, Training of Providers, Screening and Safety Assessment, Documentation, Intervention Services, Evaluation Activities, and Collaboration. CONCLUSIONS: A number of measures have been identified as useful for evaluating hospital-based DV programs. Use of these measures should assist researchers, program planners, and administrators in assessing the quality of hospital-based DV programs. 相似文献
2.
This article identifies common characteristics of educationally related programs that form a common basis for understanding and working with gifted programs. Special approaches and programs for educational enrichment as well as specific activities that have been successful are discussed. 相似文献
3.
Couples in remarriages with stepchildren are a significant portion of the marriage population and have unique educational needs regarding aspects of couple functioning within the context of stepfamily development. From a review of the literature, we examine current curricula focused on these couples. Information is offered on implementation issues regarding recruitment, delivery context, facilitator and participant characteristics, and evaluation. 相似文献
4.
探讨安徽省立医院规范临床新技术、新项目管理的做法:一是明确新技术、新项目的管理范畴和管理部门;二是抓好申报与管理的三个环节;三是管理与激励并重,实现两个效益稳步增长.并结合三年来的实践谈自身体会. 相似文献
5.
药物构效关系研究与药物设计中常用计算机软件 总被引:3,自引:0,他引:3
分子力学、量子化学和分子图形学是研究有机药物分子电子特性、空间性质及其与受体相互作用的有力工具。现扼要介绍国内外较常用的量子化学和分子力学及分子图形学有关计算机程序的应用特性。 相似文献
6.
DICOM通讯程序的设计 总被引:3,自引:0,他引:3
本文在研究DICOM协议的基础上,介绍了DICOM通讯的消息结构;从设计出发,分析了DICOM通讯过程的各个技术环节。 相似文献
7.
本文介绍了一种应用微机BASIC语言的屈光学矩阵算法程序,可方便、迅速地解决许多眼科屈光学计算问题,如共轴球面折射系统、共轴球面反射、折射系统、球、柱镜偏心棱镜效应计算和散光柱镜系统的斜交球、柱镜组合计算等等。 相似文献
8.
Effect of Population Aging on the International Organ Donation Rates and the Effectiveness of the Donation Process 总被引:2,自引:2,他引:0
N. Cuende J. I. Cuende J. Fajardo J. Huet M. Alonso 《American journal of transplantation》2007,7(6):1526-1535
This study analyzed the effect of population aging on organ donation for transplants in 43 countries and on the effectiveness of the donation process by comparing the results between Spain and the United States. The percentage of the population aged 65 or over accounted for 33% of the difference in the donation rates between the countries and for 91% of the variation in the rates after age adjustment. However, the level of aging of the Spanish (16.5%) and American (12.3%) populations failed to account for the percentages of deceased donors 65 or over (28% vs. 10%), due to the different age-specific donation rates, much higher in Spain above 50 years. These differences lead to a higher effectiveness of the process in the United States (3.1 transplanted organs per donor vs. 2.5 in Spain), though at lower rates of transplant per million population (73 vs. 87). We conclude that older populations have a greater donation potential as donation rates are strongly associated with population aging. It should therefore be mandatory to adjust donation rates for age before making comparisons. Additionally, effectiveness decreases with older donors, so age should be considered when establishing standards relating to organ donation and effectiveness of the process. 相似文献
9.
10.