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   82700篇
  免费   6543篇
  国内免费   1385篇
耳鼻咽喉   443篇
儿科学   1195篇
妇产科学   829篇
基础医学   3620篇
口腔科学   1572篇
临床医学   13101篇
内科学   6260篇
皮肤病学   793篇
神经病学   3166篇
特种医学   1245篇
外科学   6039篇
综合类   21063篇
一般理论   9篇
预防医学   10211篇
眼科学   488篇
药学   10896篇
  837篇
中国医学   6297篇
肿瘤学   2564篇
  2024年   165篇
  2023年   1409篇
  2022年   2723篇
  2021年   3913篇
  2020年   3982篇
  2019年   3077篇
  2018年   2867篇
  2017年   3115篇
  2016年   3454篇
  2015年   3321篇
  2014年   8309篇
  2013年   7762篇
  2012年   6878篇
  2011年   6836篇
  2010年   5199篇
  2009年   4120篇
  2008年   3970篇
  2007年   3715篇
  2006年   3051篇
  2005年   2250篇
  2004年   1673篇
  2003年   1282篇
  2002年   962篇
  2001年   814篇
  2000年   781篇
  1999年   560篇
  1998年   467篇
  1997年   409篇
  1996年   300篇
  1995年   260篇
  1994年   238篇
  1993年   188篇
  1992年   165篇
  1991年   129篇
  1990年   111篇
  1989年   109篇
  1988年   100篇
  1987年   90篇
  1986年   76篇
  1985年   175篇
  1984年   251篇
  1983年   206篇
  1982年   218篇
  1981年   200篇
  1980年   159篇
  1979年   152篇
  1978年   111篇
  1977年   77篇
  1976年   83篇
  1975年   73篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
51.
52.
《Radiography》2022,28(3):804-810
IntroductionRadiographers are responsible for ensuring safe and effective use of ionising radiation. Through evidence-based practice (EBP), valuable optimisation strategies can be implemented to fulfil these responsibilities. This study aimed to explore radiographers' attitudes, perceptions, and experience of using evidence-based optimisation strategies.MethodsA Grounded Theory approach using in-depth interviews. UK-based radiographers were recruited. Discussions focused on (1) the role of evidence-based optimisation strategies in daily practice, (2) assistance in implementing evidence-based optimisation strategies, and (3) the role of EBP and optimisation strategies in the future. Interviews were transcribed verbatim and analysed using open and axial coding.ResultsParticipants (n = 13) stated that EBP is not frequently used to implement optimisation strategies. Participants relied on the knowledge taught in education settings and their professional skills to optimise in daily practice, alongside departmental protocols. Barriers identified as affecting the implementation of optimisation strategies related to reluctance to change, a lack of support from superiors, and a lack of resources to engage with EBP. Some participants expected the use of optimisation strategies to become unnecessary due to technology advancements.ConclusionThe results indicate that effective operationalisation of EBP is not part of daily practice among radiographers to implement valuable optimisation strategies in daily practice.Implications for practiceThe potential barriers to implementing evidence-based optimisation strategies highlighted in this study suggest that improving access to resources and empowerment of individual radiographers is required to enable radiographers to implement optimisation strategies.  相似文献   
53.
BackgroundThe growing enthusiasm for the use of reverse shoulder arthroplasty (RSA) in the treatment of primary glenohumeral osteoarthritis (GHOA) with an intact rotator cuff is based on data derived from single-center studies with limited generalizability and follow-up. This study compared patient-reported outcomes (PROs) between RSA and total shoulder arthroplasty (TSA) for the treatment of primary GHOA with up to 5-year follow-up and examined temporal trends in the treatment of GHOA between 2012 and 2021.MethodsA retrospective review was performed on patients with primary GHOA undergoing primary arthroplasty surgery from the Surgical Outcomes System global registry between 2012 and 2021. PROs including the American Shoulder and Elbow Surgeons (ASES) score, Single Assessment Numeric Evaluation (SANE) score, and visual analog scale (VAS) for pain were compared between RSA and TSA at 1, 2, and 5 years postoperatively.ResultsA total of 4451 patients were included, with 2693 (60.5%) undergoing TSA and 1758 (39.5%) undergoing RSA. Both RSA and TSA provided clinically excellent outcomes at 1 year postoperatively (ASES: 80.8 ± 17.9 vs. 85.9 ± 15.2, respectively; SANE: 74.8 ± 24.7 vs. 79.5 ± 22.9; VAS pain: 1.3 ± 2.0 vs. 1.1 ± 1.7; all P < .05) that were maintained at 2 years (ASES: 81.3 ± 19.3 vs. 87.3 ± 14.9; SANE: 74.8 ± 26.2 vs. 79.7 ± 24.7; VAS pain: 1.3 ± 2.1 vs. 1.0 ± 1.6; all P < .05) and 5 years (ASES: 81.7 ± 16.5 vs. 86.9 ± 15.3; SANE: 71.6 ± 28.5 vs. 78.2 ± 25.9; VAS pain: 1.0 ± 1.7 vs. 1.0 ± 1.7; all P < .05), with statistical significance favoring TSA. After controlling for age and sex, there was an adjusted difference of 4.5 units in the ASES score favoring TSA (P = .005) at 5 years postoperatively but no differences in adjusted SANE (P = .745) and VAS pain (P = .332) scores. The use of RSA for GHOA grew considerably over time, from representing only 17% of all replacements performed for GHOA in 2012 to nearly half (47%) in 2021 (P < .001).ConclusionRSA as a treatment for GHOA with an intact rotator cuff seems to yield PROs that are largely clinically equivalent to TSA extending to 5 years postoperatively. The observed statistical significance favoring TSA appears to be of marginal clinical benefit based on established minimal clinically important differences and may be a result of the large sample size. Further research using more granular clinical data and examining differences in range of motion and complications is warranted as it may change the value analysis.  相似文献   
54.
《Radiography》2021,27(4):1094-1098
IntroductionEducation and training strategies in Therapeutic Radiography are challenged in recruiting and retaining students in the profession. Clinical oncology centres are often viewed as stressful environments for students due to rapid advances in technology and reported bullying and harassment. Educators continue to work with clinical partners in developing strategies to promote resilience and reduce negative attitudes. The overall aim of this project was to explore the use of Triple R sessions as a new method of student reflection.MethodsThe Review, Reflect and Re-focus (Triple R) sessions were designed to enable students to learn from their clinical experiences and; apply their understanding and positivity when they return to clinical placement. Eleven sessions were completed across 7 student cohorts in one academic year. Qualitative data was collected from feedback forms, as well as academic field notes, and analysed thematically.ResultsTwo main themes focused on: (1) staff interactions and (2) student expectations. Results showed that Triple R sessions were helpful in drawing out the experiences of students in a positive way to reflect on their own development. The sessions enabled critical self-analysis and improved problem-solving skills, particularly evident during peer discussions.ConclusionTriple R sessions explored the influence of a positive approach on students' perceptions of their overall placement. Evaluation of the data indicated that, following academic and peer discussion, students' perceptions tended to be a more positive overall view of their placement.Implications for practiceTriple R sessions can be used in academic and clinical environments to enable positive student interactions.  相似文献   
55.
56.
57.
背景 全科医生数量和质量是人力资源管理的两个重要维度,其中,医生数量的新增、保持和流失,是全科人力动态规划、管理和评价的重要考量,也是全科住院医师规范化培训(简称全科住培)的绩效指标。探讨全科住培学员的就业状况及影响因素,可以为今后住培政策和激励机制的制定提供参考,但目前针对非订单定向全科住培学员的相关研究较为缺乏。 目的 了解河南省非订单定向全科住培学员的就业状况,分析学员结业后未从事全科医学相关工作的原因,从而为完善培训管理和人力资源激励机制提供参考。 方法 于2021年8月,采用分层随机整群抽样法,在河南省选取2014—2017年入培且已结业的非订单定向全科住培学员326例进行问卷调查。问卷由课题组自行设计,主要内容为学员的基本信息、全科住培情况、目前工作情况及结业后从事与未从事全科医学相关工作的原因。问卷通过"问卷星"平台发放,由学员自行填写。 结果 共发放问卷326份,回收有效问卷271份(83.1%)。结业后,从事全科医学相关工作者77例(28.4%),从事非全科医学相关工作者194例(71.6%)。多因素Logistic回归分析结果显示,年龄、文化程度、生源类型、全科住培基地所在区域是学员结业后是否从事全科医学相关工作的影响因素(P<0.05)。与结业后未从事全科医学相关工作的学员相比,结业后从事全科医学相关工作学员注册为全科医学专业的比例更高〔70.1%(54/77)比32.0%(62/194),P<0.05〕,在乡镇卫生院/社区卫生服务中心执业的比例更高〔49.4%(38/77)比6.2%(12/194),P<0.05)〕。194例未从事全科医学相关工作的学员中,从事内科学工作者78例(40.2%),从事急诊及危重症医学工作者33例(17.0%),从事外科学工作者17例(8.8%)。不选择从事全科医学相关工作的前3位原因分别为:单位安排〔34.5%(67/194)〕,所在单位没有全科医学科〔29.9%(58/194)〕,薪酬低〔26.8%(52/194)〕。 结论 非订单定向全科住培学员选择从事全科医学相关工作的比例较低,年龄、文化程度、生源类型及基地所在区域是影响因素。建议加大全科医学理念宣传,加快综合医院全科医学科建设,提高全科医生薪酬待遇,以此增加全科医生的职业吸引力。  相似文献   
58.
59.
60.
目的培养脊柱及相关疾病推拿治疗的应用型人才。方法采用编写应用型教材、把教室转移到诊室和示教室、教材-案例“逼真”教学法、创造学生在临床真实环境下的动手操作机会和产-学-研相结合教学法等手段和方法,在内容改革上纳入目前医院和社会机构多使用的规划教材之外的手法技术、现代康复技术和世界各地的脊柱手法技术,拓宽知识面,与临床应用接轨;发挥考试的导向功能,通过改革考试和评价方法,切实培养应用型人才。结果教学效果良好,有效提升了学生临床适应能力和社会生存能力。结论以就业为导向的脊柱及相关疾病的推拿教学模式值得进一步探索。  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