全文获取类型
收费全文 | 80241篇 |
免费 | 7946篇 |
国内免费 | 956篇 |
专业分类
耳鼻咽喉 | 390篇 |
儿科学 | 1952篇 |
妇产科学 | 1213篇 |
基础医学 | 7470篇 |
口腔科学 | 1336篇 |
临床医学 | 9978篇 |
内科学 | 9788篇 |
皮肤病学 | 860篇 |
神经病学 | 3780篇 |
特种医学 | 1650篇 |
外国民族医学 | 2篇 |
外科学 | 9459篇 |
综合类 | 14001篇 |
现状与发展 | 4篇 |
一般理论 | 31篇 |
预防医学 | 14422篇 |
眼科学 | 567篇 |
药学 | 5140篇 |
105篇 | |
中国医学 | 4802篇 |
肿瘤学 | 2193篇 |
出版年
2024年 | 102篇 |
2023年 | 1557篇 |
2022年 | 2070篇 |
2021年 | 3363篇 |
2020年 | 3433篇 |
2019年 | 5211篇 |
2018年 | 4690篇 |
2017年 | 3658篇 |
2016年 | 2690篇 |
2015年 | 2716篇 |
2014年 | 5086篇 |
2013年 | 5527篇 |
2012年 | 4602篇 |
2011年 | 4852篇 |
2010年 | 3909篇 |
2009年 | 3516篇 |
2008年 | 3390篇 |
2007年 | 3074篇 |
2006年 | 2808篇 |
2005年 | 1998篇 |
2004年 | 1648篇 |
2003年 | 1429篇 |
2002年 | 1026篇 |
2001年 | 912篇 |
2000年 | 841篇 |
1999年 | 621篇 |
1998年 | 526篇 |
1997年 | 466篇 |
1996年 | 378篇 |
1995年 | 384篇 |
1994年 | 290篇 |
1993年 | 231篇 |
1992年 | 169篇 |
1991年 | 145篇 |
1990年 | 144篇 |
1989年 | 129篇 |
1988年 | 128篇 |
1985年 | 942篇 |
1984年 | 1491篇 |
1983年 | 1164篇 |
1982年 | 1183篇 |
1981年 | 1166篇 |
1980年 | 1022篇 |
1979年 | 899篇 |
1978年 | 697篇 |
1977年 | 496篇 |
1976年 | 674篇 |
1975年 | 568篇 |
1974年 | 479篇 |
1973年 | 446篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
1.
目的分析超长住院患者分布及影响因素,探讨减少超长住院日的措施。方法从江苏省某三甲医院病案管理系统中调取2020年1月1日-2020年12月31日134016例出院患者的住院病案首页资料,对住院时间≥30天的1401例超长住院患者的分布特征进行统计描述,采用Logistic回归模型分析超长住院日的影响因素。结果2020年全院平均住院日为7.13天,其中超长住院患者平均住院日为41.85天。超长住院患者以60岁以上年龄组最多(39.61%);出院科室主要分布在血液科(42.18%)、普通外科(11.85%)、骨科(7.49%)等;疾病类别主要为肿瘤(47.32%)、影响健康状态和与保健机构接触的因素(10.56%)、循环系统疾病(7.07%)等;多因素Logistic回归结果显示,男性(OR=1.188)、离院方式为非医嘱离院或其他(OR=2.046)和死亡病例(OR=3.362)是超长住院的危险因素。结论控制超长住院日对平均住院日影响显著,医院应加强重点人群、重点科室和重点病种管理提高诊疗管理水平,缩短平均住院日。 相似文献
2.
《Research in social & administrative pharmacy》2022,18(9):3694-3698
In this paper, we argue that understanding and addressing the problem of poor-quality medical products requires a more interdisciplinary approach than has been evident to date. While prospective studies based on rigorous standardized methodologies are the gold standard for measuring the prevalence of poor-quality medical products and understanding their distribution nationally and internationally, they should be complemented by social science research to unpack the complex set of social, economic, and governance factors that underlie these patterns. In the following sections, we discuss specific examples of prospective quality surveys and of social science studies, highlighting the value of cross-sector partnerships in driving high-quality, policy-relevant research in this area. 相似文献
3.
4.
【目的】 探讨医学期刊编辑处理生物医学研究伦理问题的方式,为推动确立医学期刊伦理审查规范提供参考。【方法】 通过问卷星向国内医学期刊编辑发放调查问卷,对审稿时和论文出版后处理医学伦理相关问题的方式展开调研。【结果】 共回收问卷230份。调查显示:在审稿阶段,在保护患者隐私方面,英文期刊、中英双语期刊的编辑更注重要求作者提供授权同意相关证明材料;中、英文期刊以及中英双语期刊的编辑对涉及人体试验伦理问题的处理方式都比较规范。但是,对于研究是否获得患者知情同意、动物实验研究是否经过伦理委员会审查、回顾性研究是否需要伦理审查、涉及人的研究是否在临床试验注册中心注册等问题,编辑还需要进一步重视。在论文出版后,编辑发现的医学伦理问题主要是“涉及人的研究未说明是否经过伦理委员会审查”。对论文出版后发现的没有保护患者隐私和没有在临床试验注册中心注册的问题,大部分期刊缺乏相关处理方案。【结论】 编辑应加强对论文知情同意、动物实验伦理、回顾性研究伦理的审查,并审查涉及人的研究是否在临床试验注册中心注册,以推动我国医学期刊的高质量发展。 相似文献
5.
《Journal of the Academy of Nutrition and Dietetics》2022,122(12):2288-2294
BackgroundDental caries is the most common chronic childhood disease. Past studies revealed that grandparents provide their grandchildren with cariogenic foods and beverages (eg, those with free sugars and/or modified starches). Qualitative research can help identify what drives this phenomenon.ObjectiveOur aim was to examine mothers’ explanations for why grandparents in north central and central Appalachia give their grandchildren cariogenic foods and beverages.DesignA qualitative study on children’s oral health in Pennsylvania and West Virginia from 2018 through 2020 was performed. In-person, semi-structured interviews were conducted. Qualitative data from interviews were recorded, transcribed, and then coded using NVivo. Data analysis for this study was performed using thematic analysis with iterative theme development.Participants/settingThe participants were 126 mothers of children aged 3-5 years from West Virginia (n = 66) and Pittsburgh, PA (n = 60).Main outcome measuresMothers’ perspectives about why grandparents give their grandchildren cariogenic foods and beverages were analyzed.ResultsIn the study sample, 85% of mothers (n = 107/126) named at least 1 of their children’s grandparents as a member of their social network responsible for their children’s oral health. From these interviews, 85% of mothers (n = 91/107) discussed that grandparents gave their grandchildren cariogenic foods and beverages. The mothers described the following 4 themes to explain why grandparents gave their grandchildren cariogenic foods and beverages: privilege of the grandparent role; responsibilities of the grandparent role; symbol of care and affection; and limited consideration or understanding of the detrimental impact.ConclusionsGrandparents play a role in giving their grandchildren cariogenic foods and beverages, which could potentially contribute to childhood caries. Research is needed to develop effective social interventions to help some grandparents understand the implications of a cariogenic diet on their grandchildren’s oral health and/or decrease their provision of cariogenic foods and beverages. 相似文献
6.
Edwin van der Pol Joshua A. Welsh Rienk Nieuwland 《Journal of thrombosis and haemostasis》2022,20(1):245-251
The Extracellular Vesicle Flow Cytometry Working Group ( http://www.evflowcytometry.org ) is formed by members of the International Society for Extracellular Vesicles (ISEV), the International Society for Advancement of Cytometry (ISAC), and the International Society on Thrombosis and Haemostasis (ISTH). This working group of flow cytometry experts develops guidelines for best practices regarding flow cytometry detection of extracellular vesicles. To improve rigor and standardization, this working group published a framework outlining the minimal information to report about a flow cytometry experiment on extracellular vesicles (MIFlowCyt-EV) in the Journal of Extracellular Vesicles, the ISEV journal, in 2020. In parallel, an article explaining MIFlowCyt-EV was published in Cytometry Part A, one of the ISAC journals, and now will be introduced to the ISTH as an SSC Communication in the Journal of Thrombosis and Haemostasis. The goal of this SSC Communication is to explain why flow cytometry is becoming the instrument of choice to characterize single extracellular vesicles, the obstacles that have been identified and (mostly) overcome by developing procedures to calibrate flow cytometers, and the relevance of reporting minimal information to improve reliability and reproducibility of experiments in which flow cytometers are used for characterization of extracellular vesicles. 相似文献
7.
8.
目的 了解江苏省省级专科护士工作投入现状及影响因素,为针对性管理提供参考。方法 采用一般资料调查问卷与专科护士工作投入量表对2 472名省级专科护士进行调查分析。结果 专科护士工作投入总均分为4.06±0.46;多元线性回归分析显示,性别、聘任方式、专科类别、工作类型、出任专科护理门诊、论文发表是专科护士工作投入的影响因素(P<0.05,P<0.01)。结论 专科护士工作投入水平较高,其影响因素较多,护理管理者应关注专科护士专业开展现况,采取针对性措施支持专科护理的有效开展,从而进一步提高专科护士的工作投入水平。 相似文献
9.
基于国家深化高等院校课程建设的新时代视域,提升课程质量成为高校教育教学发展的重要任务。地方医学院校作为基层卫生人才的培养摇篮,构建科学合理的课程质量监控体系愈发迫切。本文分析了我国高等院校课程质量监控体系存在的问题,结合地方医学院校办学特点和广州医科大学工作实践,探索构建了集“多样化监控方法、全维度监控指标、闭环式反馈机制、多层级文化建设”为一体的课程质量监控体系,为同类院校提供实际参考。 相似文献
10.
《Radiography》2022,28(2):353-359
Patient contact shielding has been in use for many years in radiology departments in order to reduce the effects and risks of ionising radiation on certain organs. New technologies in projection imaging and CT scanning such as digital receptors and automatic exposure control (AEC) systems have reduced doses and improved image consistency. These changes and a greater understanding of both the benefits and the risks from the use of shielding have led to a review of shielding use in radiology. A number of professional bodies have already issued guidance in this regard. This paper represents the current consensus view of the main bodies involved in radiation safety and imaging in Europe: European Federation of Organisations for Medical Physics, European Federation of Radiographer Societies, European Society of Radiology, European Society of Paediatric Radiology, EuroSafe Imaging, European Radiation Dosimetry Group (EURADOS), and European Academy of DentoMaxilloFacial Radiology (EADMFR). It is based on the expert recommendations of the Gonad and Patient Shielding (GAPS) Group formed with the purpose of developing consensus in this area. The recommendations are intended to be clear and easy to use. They are intended as guidance, and they are developed using a multidisciplinary team approach. It is recognised that regulations, custom and practice vary widely on the use of patient shielding in Europe and it is hoped that these recommendations will inform a change management program that will benefit patients and staff. 相似文献