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   5045篇
  免费   733篇
  国内免费   63篇
耳鼻咽喉   16篇
儿科学   64篇
妇产科学   35篇
基础医学   306篇
口腔科学   163篇
临床医学   393篇
内科学   428篇
皮肤病学   60篇
神经病学   214篇
特种医学   95篇
外科学   505篇
综合类   1415篇
预防医学   820篇
眼科学   22篇
药学   428篇
  36篇
中国医学   703篇
肿瘤学   138篇
  2024年   31篇
  2023年   229篇
  2022年   545篇
  2021年   658篇
  2020年   489篇
  2019年   346篇
  2018年   281篇
  2017年   270篇
  2016年   225篇
  2015年   193篇
  2014年   495篇
  2013年   334篇
  2012年   307篇
  2011年   312篇
  2010年   216篇
  2009年   159篇
  2008年   172篇
  2007年   137篇
  2006年   101篇
  2005年   89篇
  2004年   49篇
  2003年   49篇
  2002年   32篇
  2001年   23篇
  2000年   14篇
  1999年   11篇
  1998年   11篇
  1997年   8篇
  1996年   7篇
  1995年   9篇
  1994年   4篇
  1993年   6篇
  1992年   3篇
  1991年   2篇
  1990年   3篇
  1989年   1篇
  1988年   2篇
  1987年   3篇
  1986年   3篇
  1985年   3篇
  1983年   1篇
  1982年   2篇
  1981年   1篇
  1980年   1篇
  1978年   1篇
  1977年   1篇
  1973年   1篇
  1970年   1篇
排序方式: 共有5841条查询结果,搜索用时 31 毫秒
61.
目的:梳理与明确黑龙江省县域医联体建设中的关键问题,为黑龙江省县域医联体建设提供参考意见。方法:文献分析法、社会网络分析法等。结果:黑龙江省县域医疗体系在政策和相关卫生资源的配置上存在医疗资源薄弱、县域医联体政策、配套措施不足等问题;医联体成员间、医生间利益分配和激励机制不足、农村基层医疗机构服务能力不足以及政府对于医共体财政补助不足是目前被学者们普遍认同的关键问题。结论:重构利益分配和激励机制、以政策与相关配套措施推动县域医联体建设、补齐县级医院短板是黑龙江省县域医联体建设的必要之举。  相似文献   
62.
生物物质的介电测量技术   总被引:1,自引:0,他引:1  
本文根据传输线法介电测量原理建立起100KHz~500MHz频率范围的生物物质介电测量系统,该系统由网络分析仪、同轴线腔式传感器及测温控温装置等组成,并由计算机实现自动采样与分析。对测量误差的来源作了详细分析,一定修正和补偿条件下,本文制做的腔式传感器适用于整个频率范围。对人全血和人脑组织等高含水量物质的介电常数测量误差小于3%,电导率误差小于2%。  相似文献   
63.
浅析医院网络的建设与应用   总被引:1,自引:0,他引:1  
杨瑾 《医学信息》2008,21(3):319-321
本文论述了医院中网络建设的策略和原则,并从网络在医院中的应用入手详细阐述医院网络规划的策略、网络技术选择策略、医院网络的维护与保障策略.并针对医院对网络建设的规划不完整加以分析.  相似文献   
64.
本文对校园网的教学应用范围、两种组成模式作了简要的介绍,指出校园网的快速建设和发展,对教学、科研、建立新的教学模式、改革教学内容、方法、推进素质教育等方面起到了积极重要的作用,离不开管理层观念的转变及长期支持。并对网络软件资源开发、建设、管理进行了建设性的讨论。  相似文献   
65.
This paper examines the hospital accreditation system in Taiwan, Republic of China. The paper describes the historical evolution of accreditation; preliminary teaching hospital accreditation; hospital and teaching hospital accreditation; issues and problems; and perspectives and challenges.  相似文献   
66.
BackgroundMindfulness interventions can improve psychological distress and quality of life (QoL) in cancer survivors. Few mindfulness programs for cancer recovery exist in Southeastern U.S. The primary objective of this study was to assess the feasibility of a modified mindfulness-based stress reduction (MBSR) program for breast cancer patients in Birmingham, Alabama. The secondary objective was to explore potential program effects on mindfulness skills and QoL.MethodsThis study was a prospective, quasi-experimental feasibility study conducted over 10 months at a university hospital. Feasibility was achieved if 80% of eligible patients screened enrolled in the study and 70% of enrolled patients attended all 8 program sessions. Effectiveness was estimated by changes in mindfulness and QoL indicators measured with validated scales administered at 3 time points and assessed with a non-parametric Friedman test. Sessions included meditation, yoga, and an attention practice called body scan. There were 3 groups of 2–5 patients.ResultsThe sample totaled 12 patients. Forty-four percent (12/27) of eligible patients enrolled in the study, and two out of 12 enrolled patients completed 8 program sessions, resulting in 16.7% (2/12) retention. However, more than half (66.7%) of participants completed at least 7 sessions. Between baseline and 8-week follow-up, patients demonstrated statistically significant improvements in distress, general wellbeing, and fatigue-related QoL.ConclusionsFeasibility objectives were not achieved. However, a majority of participants (66.7%) completed 7 of 8 program sessions. Program effects were promising for distress, fatigue, and wellbeing. Results warrant further research on MBSR-like programs for breast cancer patients in Alabama.  相似文献   
67.
This study demonstrates that gating of responses of the rostral dorsal accessory olive (rDAO) to somatosensory stimulation varies across the estrous hormone cycle of the rat. The rDAO has been suggested as an error or event signal generator for the cerebellar cortex. Selective sensory gating of input to this structure may underlie this error signalling function. In the present study, as many as 23 single neurons were recorded simultaneously from either the forepaw or the snout areas of the rDAO. Responses of these neurons to electrical stimulation of peripheral afferents were determined during active movement or non-movement conditions. These results were then compared across the estrous cycle or after administration of the estrous hormones 17 -estradiol (E2) and/or progesterone (P) to rats on diestrus or following E2 priming. Elevations in circulating estrous hormones produced greater excitatory responses of rDAO neurons to stimulation during non-movement, and, conversely, enhanced inhibition of rDAO activity during active movement of the stimulated peripheral area compared with control diestrous conditions, suggesting that selective gating processes to the rDAO are enhanced by estrous hormones. The results of this study suggest that the night of behavioral estrus is associated with enhanced selective sensory gating processes associated with improved detection and processing of error signals.  相似文献   
68.
The therapeutic alliance is a well-studied construct factor that is important to outcome in many forms of individual therapy. Therapeutic alliance has been rarely studied in group therapy and results in addiction treatment have been mixed. In this paper, we studied the presence of a therapeutic alliance in Network Therapy: an approach that uses peer and family support in addiction treatment. Twenty-one participants undergoing Network Therapy for cocaine addiction were observed on videotape, and were rated on therapeutic alliance using the Working Alliance Inventory and the Penn Helping Alliance Rating Scale. Results showed a significant positive correlation between therapeutic alliance and outcome as measured by the percentage of cocaine-free urine toxicology screens and by eight consecutive cocaine-free urines.  相似文献   
69.
建立中药复方用半仿生提取研究的技术平台   总被引:5,自引:0,他引:5       下载免费PDF全文
半仿生提取法(SBE法)是针对中药药效物质提取中存在的 “唯成分论”和“通则论”,采用“灰思维方式”将整体药物研究法与分子药物研究法相结合,从生物药剂学的角度为经消化道给药的中药制剂创立的一种提取新技术。经对多种中药及其复方的研究,结果皆提示:半仿生提取法有可能替代(WE法水提取法);(SBAE法半仿生提取醇沉淀法)有可能替代(WAE法水提醇沉淀法)。本文以黄连解毒汤和慈航丹为例,对建立中药复方半仿生提取研究的技术平台作了介绍。  相似文献   
70.
本文以中药滴剂生产过程的优化为目标,以某大型中药集团企业的滴剂生产过程为背景,为实现滴丸制剂过程数字化进行了理论与应用上的探索,其中,为制剂过程建立了多个机理模型:通过辨识建立数据模型,对生产过程进行分析,给出了相应的优化方案;对难以直接测量的滴制速度这一关键参数,提出了多种软测量算法,利用粒子群算法优化模糊控制器,构建了一个实用的滴速模糊控制系统;设计与构建了数据采集分析平台和制剂过程生产测控系统。  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