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   494865篇
  免费   38748篇
  国内免费   10737篇
耳鼻咽喉   6658篇
儿科学   12369篇
妇产科学   8663篇
基础医学   39485篇
口腔科学   13250篇
临床医学   52012篇
内科学   55207篇
皮肤病学   6416篇
神经病学   26888篇
特种医学   12326篇
外国民族医学   40篇
外科学   51431篇
综合类   77952篇
现状与发展   22篇
一般理论   52篇
预防医学   56282篇
眼科学   6595篇
药学   46190篇
  642篇
中国医学   51204篇
肿瘤学   20666篇
  2023年   8296篇
  2022年   12496篇
  2021年   20058篇
  2020年   20321篇
  2019年   24564篇
  2018年   22120篇
  2017年   19178篇
  2016年   16666篇
  2015年   15758篇
  2014年   31807篇
  2013年   33073篇
  2012年   28669篇
  2011年   30877篇
  2010年   24914篇
  2009年   22338篇
  2008年   21274篇
  2007年   21769篇
  2006年   18912篇
  2005年   16318篇
  2004年   13321篇
  2003年   11697篇
  2002年   9199篇
  2001年   8049篇
  2000年   6778篇
  1999年   5662篇
  1998年   4357篇
  1997年   4071篇
  1996年   3476篇
  1995年   3572篇
  1994年   3390篇
  1993年   2782篇
  1992年   2727篇
  1991年   2400篇
  1990年   2129篇
  1989年   1950篇
  1988年   1832篇
  1987年   1599篇
  1986年   1493篇
  1985年   4716篇
  1984年   5753篇
  1983年   4059篇
  1982年   4767篇
  1981年   4134篇
  1980年   3661篇
  1979年   3366篇
  1978年   2884篇
  1977年   2185篇
  1976年   2490篇
  1975年   1837篇
  1974年   1609篇
排序方式: 共有10000条查询结果,搜索用时 21 毫秒
1.
2.
3.
目的:探讨基于虚拟教研室的公共卫生安全素养培育课程构建及实践。方法:选取某医学院校专科护理专业学生(护生)为研究对象,将护理1班45人作为试验组,将护理2班43人作为对照组,对照组对公共卫生安全知识实施线上与线下的常规教学,试验组实施基于虚拟教研室的公共卫生安全素养培育课程。比较两组护生内容掌握情况及学习满意度。结果:试验组护生的学习成绩明显高于对照组(P<0.01),试验组护生对教学的满意度为95.6%(43/45),明显高于对照组(P<0.05)。结论:基于虚拟教研室的公共卫生安全素养培育课程构建既可以广泛促进不同专业教师进行教学研究交流,全面提高教师教书育人能力,又可以使护生在学习过程中接触不同专业、不同领域的知识与技能,注重护生主体作用,提高学习效果和学习满意度。  相似文献   
4.
徐素琴  向邱 《全科护理》2022,20(1):73-76
目的:探讨项目管理在降低呼吸重症监护室(RICU)环境物品表面多重耐药菌检出率中的应用效果。方法:采用目的抽样方法,选取医院呼吸与危重症医学科RICU 17张编制床位、32处高频接触环境物品表面及42名工作人员为观察对象。2019年1月—2019年3月实施RICU常规管理,2019年4月—2019年6月实施项目管理。比较项目管理前后RICU各类别工作人员手卫生依从率、RICU环境物品表面清洁合格率及多重耐药菌检出率。结果:在项目管理后RICU各类别工作人员手卫生依从率均高于项目管理前(P<0.05);项目管理后RICU环境物品表面清洁合格率较项目管理前升高(P<0.05);项目管理后多重耐药菌(MDRO)病人床单位及病区办公区域环境物体表面的耐甲氧西林金黄色葡萄球菌(MRSA)和耐碳青霉烯鲍曼不动杆菌(CRAB)检出率均较项目管理前降低(P<0.05)。结论:项目管理可有效提高RICU各类别工作人员手卫生依从性及环境物品表面清洁合格率,降低RICU环境物品表面多重耐药菌检出率。  相似文献   
5.
目的 基于《国际功能、残疾和健康分类》(ICF)构建智力和发展性残疾儿童青少年身体活动效益系统综述的范畴和PICO架构,探讨智力和发展性残疾儿童和青少年参加身体活动的健康效益。  相似文献   
6.
IntroductionDetailed data on clinical characteristics in children with the omicron strain of SARS-COV-2 are limited.MethodsWe conducted a retrospective observational study of children with COVID-19 at the National Center for Child Health and Development to evaluate the clinical manifestations during and before the emergence of the omicron variant. Only symptomatic patients without underlying diseases were included. Participants were divided into two temporal groups: the “omicron era” (1/2022–2/2022) and the “pre-omicron era,” where the delta variant predominated (7/2021–11/2021). The patients were subclassified into an older vaccine-eligible group (aged 12–17 years), a younger vaccine-eligible group (aged 5–11 years), and a vaccine-ineligible group (aged 0–4 years).ResultsWe compared 113 patients in the omicron era with 106 in the pre-omicron era. Most patients in both eras had non-severe disease, and no patients required mechanical ventilation or died. Among patients aged 0–4 years, sore throat and hoarseness were more common during the omicron era than the pre-omicron era (11.1% vs. 0.0% and 11.1% vs. 1.5%, respectively). Croup syndrome was diagnosed in all patients with hoarseness. Among patients aged 5–11 years, vomiting was more frequent during the omicron era (47.2%) than during the pre-omicron era (21.7%). Cough and rhinorrhea were less common during the omicron era in patients aged 0–4 and 5–11 years, respectively, than during the pre-omicron era.ConclusionsIn children with COVID-19, clinical manifestations differed between the omicron and pre-omicron eras. In the Omicron era, croup syndrome was more frequent in vaccine-ineligible children.  相似文献   
7.
The discussion paper will focus on continuity of care relating to previous NZ research, specifically to transitioning complex preterm infants from NICU to home based on parent experiences, and on the practice developments that have occurred, to ensure optimal health outcomes. Previous NZ research discovered parent desire a consistent service delivery for the entire transition journey from NICU and at home.An informative and comprehensive opportunity has occurred for reflective professional practice, evaluation, development and implementation which have transpired in positive change through innovative practice developments and support change implementation in Wellington, NZ. This has resulted in the articulation of a model of care that has both embraced and integrated parental desires for a continuity of care process for complex preterm infants. This has been achieved by having the same Discharge Facilitator/Key Case Manager present within the NICU and external to the NICU for Home-based infants for the entire transition journey.The paper will focus and emphasis additional practice development changes and furthermore, will present a real purpose, for other countries to learn of such practice developments that have exemplified a celebratory success for families of Wellington, NZ.  相似文献   
8.
【目的】 对术语使用情况进行调研,找出术语使用不规范的问题,为提升我国科技期刊术语规范化水平、推进科技期刊高质量发展提供依据。【方法】 采用回顾性调查方法,选择18种科技期刊2020年全年刊出的所有文章,调查其中术语使用差错情况。【结果】 术语相关差错主要涉及术语使用规范问题、术语编校规范问题及专有名词术语规范问题,具体差错类型比较多样化,不利于期刊质量及影响力的提升,应引起论文作者及期刊工作者的高度重视。术语相关差错中,术语使用规范问题最为突出;术语使用规范问题的各种类型中,术语形音义相近而误的现象最为突出。【结论】 我国科技期刊术语规范化水平有待提升,需要引起重视。  相似文献   
9.
《Vaccine》2022,40(52):7604-7612
Background and ObjectiveVaccine uptake during pregnancy remains low. Our objectives were to describe 1) development and adaptation of a clinician communication training intervention for maternal immunizations and 2) obstetrics and gynecology (ob-gyn) clinician and staff perspectives on the intervention and fit for the prenatal care context.MethodsDesign of the Motivational Interviewing for Maternal Immunizations (MI4MI) intervention was based on similar communication training interventions for pediatric settings and included presumptive initiation of vaccine recommendations (“You’re due for two vaccines today”) combined with motivational interviewing (MI) for hesitant patients. Interviews and focus group discussions were conducted with ob-gyn clinicians and staff in five Colorado clinics including settings with obstetric physicians, certified nurse midwives (CNMs), and clinician-trainees. Participants were asked about adapting training to the ob-gyn setting and their implementation experiences. Feedback was incorporated through iterative changes to training components.ResultsInterview and focus group discussion results from participants before (n = 3), during (n = 11) and after (n = 25) implementation guided intervention development and adaptation. Three virtual, asynchronous training components were created: a video and two interactive modules. This virtual format was favored due to challenges attending group meetings; however, participants noted opportunities to practice skills through role-play were lacking. Training modules were adapted to include common challenging vaccine conversations and live-action videos. Participants liked interactive training components and use of adult learning strategies. Some participants initially resisted the presumptive approach but later found it useful after applying it in their practices. Overall, participants reported that MI4MI training fit well with the prenatal context and recommended more inclusion of non-clinician staff.ConclusionsMI4MI training was viewed as relevant and useful for ob-gyn clinicians and staff. Suggestions included making training more interactive, and including more complex scenarios and non-clinician staff.  相似文献   
10.
目的 评价多功能套针浮刺疗法对神经根型颈椎病的临床疗效。方法 选取256例神经根型颈椎病患者,按随机数字表法分为观察组与对照组各128例。观察组应用多功能套针浮刺疗法进行干预,对照组为常规针刺治疗。两组患者均治疗7天。分别于治疗前后观察两组患者的简化McGill疼痛问卷(SF-MPQ)、国际标准颈椎功能障碍指数(NDI)和田中靖久颈椎病症状20分法量表评分,并于治疗结束后3个月观察复发率。结果 两组患者治疗后的SF-MPQ量表评分、NDI量表评分及田中靖久颈椎病症状20分法评分与治疗前相比均有改善(P<0.05),且观察组优于对照组(P<0.05);两组患者于治疗后3个月随访,SF-MPQ量表评分与治疗后相比均有改善,且观察组优于对照组(P<0.05);观察组临床疗效总有效率为96.88%,愈显率为81.25%;对照组总有效率为78.13%,愈显率为46.88%,观察组优于对照组(P<0.05)。结论 应用多功能套针浮刺疗法治疗神经根型颈椎病临床疗效显著,见效较快,可有效降低其复发率,且作用稳定,效果持久,值得临床推广应用。  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