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   226019篇
  免费   20004篇
  国内免费   4637篇
耳鼻咽喉   3318篇
儿科学   4351篇
妇产科学   3816篇
基础医学   17465篇
口腔科学   7637篇
临床医学   24630篇
内科学   21239篇
皮肤病学   2478篇
神经病学   10941篇
特种医学   5945篇
外国民族医学   11篇
外科学   22018篇
综合类   35447篇
现状与发展   9篇
一般理论   24篇
预防医学   31813篇
眼科学   2086篇
药学   21332篇
  446篇
中国医学   26260篇
肿瘤学   9394篇
  2024年   963篇
  2023年   4575篇
  2022年   8416篇
  2021年   11184篇
  2020年   11061篇
  2019年   12249篇
  2018年   10919篇
  2017年   9407篇
  2016年   8558篇
  2015年   7901篇
  2014年   15314篇
  2013年   16048篇
  2012年   13543篇
  2011年   14482篇
  2010年   11649篇
  2009年   10242篇
  2008年   9525篇
  2007年   9579篇
  2006年   8115篇
  2005年   6869篇
  2004年   5694篇
  2003年   4999篇
  2002年   3865篇
  2001年   3238篇
  2000年   2905篇
  1999年   2341篇
  1998年   1900篇
  1997年   1705篇
  1996年   1354篇
  1995年   1272篇
  1994年   1145篇
  1993年   1024篇
  1992年   936篇
  1991年   839篇
  1990年   731篇
  1989年   705篇
  1988年   656篇
  1987年   585篇
  1986年   540篇
  1985年   1799篇
  1984年   2079篇
  1983年   1300篇
  1982年   1720篇
  1981年   1197篇
  1980年   1023篇
  1979年   905篇
  1978年   744篇
  1977年   564篇
  1976年   699篇
  1975年   483篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
131.
肝包虫病是流行于世界畜牧业发达地区的常见人畜共患性寄生虫病。文章介绍了肝包虫病的症状体征、诊断依据,以及各种治疗方法,以期对该病的防治提供参考。  相似文献   
132.
This paper compares experiences of breastfeeding outside the home for women living in low-income and high-income neighborhoods of the same city. Our findings are based on an analysis of 22 interviews with breastfeeding mothers (11 in each of two study areas) undertaken in Bristol, UK in 2017. We extend existing scholarship by showing how experiences of breastfeeding vary not only at the regional level but between local areas of the same city, and outline how our findings can inform policy. We advance literature on maternal bodies by exploring how local “landscapes” of breastfeeding emerge as mothers encounter and negotiate different socio-material landscapes and locally-differentiated norms about “appropriate” maternal embodiment. We argue that these variegated interactions can lead to different orientations to space and forms of spatial practice on the part of breastfeeding mothers, as well as different kinds of maternal identities.  相似文献   
133.
134.
135.
Continuous management improvement should be an aspiration for all public sector organizations. External comparison or benchmarking identifies good practices in similar organizations. For public health services, it is not easy to obtain such indicators. The objectives of this paper are to describe the process of conducting a benchmarking exercise for a public health agency, and to share its results. For this purpose, agencies that may be compared were identified, and their websites were searched for annual reports or other documents with indicators of the activities or results of public health services. Limitations and contextual aspects of the indicators of the different organizations were identified, as well as ways to improve their comparability. Finally, a set of 19 indicators is proposed, as an initial core for quality management comparisons.  相似文献   
136.
《Enfermería clínica》2020,30(3):136-144
The implementation of Best practice guidelines is effective in improving clinical practice and reducing clinical variability. The Best Practice Guidelines of the Ontario Nurses Association have been implemented in Spain since 2012 following the principles of the Canadian programme of the Best Practice Spotlight Organisations® (BPSO®). The Nursing and Healthcare Research Unit (Investén-isciii) coordinates this programme in Spain, having been nominated BPSO Host by the Ontario Nurses Association.Four strategies were followed: translation of the Best Practice Guidelines, dissemination of same and of the programme, implementation of the Best Practice Guidelines and assessment of the results in competitively selected centres, and, finally, the development of sustainability mechanisms.Implementation is based on the theoretical Knowledge to Action model, which establishes a cycle of 6 phases: identification of the problem and training of selected BPSO®; adaptation to the local context; assessment of facilitators and barriers; adaptation and implementation of interventions; monitoring and evaluation of results, and sustainability. Each of these phases incorporate evidence-based elements that promote the effectiveness of implementation, such as the competitive selection of candidates to participate in the programme, selection by the institution of the guidelines to be implemented, leadership by nurses with a multi-professional approach, planning of the process from work structures that are non-vertical but with the support of the institution, the simultaneous use of multiple strategies, ongoing assessment and feedback of results. All of which is mentored and supported by the BPSO Host.There are currently 27 institutions in Spain of different characteristics that implement a total of 20 clinical guidelines. The scope and structure of the programme has recently been extended with regional BPSO Host coordinating centres, which has brought the number of institutions to 36 and the number of implemented clinical guidelines to 22.The programme has had a positive impact on organisations and the system, on care processes and on patient health. This is evidenced by enriched evidence-based professional practice, the promotion of collaborative networking and by improved patient health outcomes and the quality of care provided.  相似文献   
137.
BackgroundDistal radial access (DRA) has been proposed to improve procedure ergonomics and favor radial artery patency. Although promising data, nothing is known on evolving hand function after DRA.ObjectivesThis study sought to comprehensively evaluate hand function in patients undergoing DRA.MethodsReal-world patients undergoing DRA undertook a thorough multimodality assessment of hand function implementing multidomain questionnaires (Disabilities of the Arm, Shoulder and Hand and Levine-Katz), and motor (pinch grip test) and sensory (Semmes-Weinstein monofilaments test) examinations of both hands. All assessments were performed at preprocedural baseline and planned at 1-, 6-, and 12-month follow-up (FU). Adverse clinical and procedural events were documented too.ResultsData of 313 patients (220 men, age 66 ± 10 years) from 9 international centers were analyzed. The Disabilities of the Arm, Shoulder and Hand and the Levine-Katz scores slightly improved from baseline to FU (P = 0.008 and P = 0.029, respectively). Pinch strength mildly improved from baseline to FU (P < 0.001 for both the left and right hands). Similarly, touch pressure threshold appeared to faintly improve in both the left and right hands (P < 0.012 for all the sites). For both motor and sensory function tests, comparable findings were found for the DRA hand and the contralateral one, with no significant differences between them. Repeated assessment of all tests over all FU time points similarly showed lack of worsening hand function. Access-related adverse events included 19 harmless bleedings and 3 forearm radial artery and 3 distal radial artery occlusions. None affected hand function at FU.ConclusionsIn a systematic multidimensional assessment, DRA was not associated with hand function impairment. Moreover, DRA emerges as a safe alternative vascular access.  相似文献   
138.
139.
140.
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