全文获取类型
收费全文 | 46373篇 |
免费 | 3404篇 |
国内免费 | 510篇 |
专业分类
耳鼻咽喉 | 227篇 |
儿科学 | 978篇 |
妇产科学 | 829篇 |
基础医学 | 1455篇 |
口腔科学 | 706篇 |
临床医学 | 9937篇 |
内科学 | 4156篇 |
皮肤病学 | 239篇 |
神经病学 | 901篇 |
特种医学 | 583篇 |
外国民族医学 | 1篇 |
外科学 | 4574篇 |
综合类 | 7120篇 |
现状与发展 | 3篇 |
一般理论 | 3篇 |
预防医学 | 12924篇 |
眼科学 | 213篇 |
药学 | 3687篇 |
122篇 | |
中国医学 | 677篇 |
肿瘤学 | 952篇 |
出版年
2024年 | 95篇 |
2023年 | 972篇 |
2022年 | 1834篇 |
2021年 | 2465篇 |
2020年 | 2816篇 |
2019年 | 1899篇 |
2018年 | 1742篇 |
2017年 | 1685篇 |
2016年 | 1762篇 |
2015年 | 1718篇 |
2014年 | 4147篇 |
2013年 | 3722篇 |
2012年 | 3340篇 |
2011年 | 3388篇 |
2010年 | 2783篇 |
2009年 | 2336篇 |
2008年 | 2355篇 |
2007年 | 2046篇 |
2006年 | 1865篇 |
2005年 | 1450篇 |
2004年 | 1217篇 |
2003年 | 914篇 |
2002年 | 650篇 |
2001年 | 495篇 |
2000年 | 396篇 |
1999年 | 318篇 |
1998年 | 312篇 |
1997年 | 230篇 |
1996年 | 192篇 |
1995年 | 135篇 |
1994年 | 125篇 |
1993年 | 113篇 |
1992年 | 75篇 |
1991年 | 85篇 |
1990年 | 51篇 |
1989年 | 49篇 |
1988年 | 45篇 |
1987年 | 37篇 |
1986年 | 27篇 |
1985年 | 62篇 |
1984年 | 69篇 |
1983年 | 54篇 |
1982年 | 46篇 |
1981年 | 51篇 |
1980年 | 40篇 |
1979年 | 13篇 |
1978年 | 19篇 |
1977年 | 13篇 |
1976年 | 12篇 |
1974年 | 7篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
21.
Stavros Bekas 《Teaching and learning in medicine》2015,27(1):4-11
Phenomenon: The central role of clinical leadership in achieving the vision of quality and productivity could be attained by investing in its development in postgraduate medical education. Approach: A critical review of selected literature is presented. Findings: The author identifies some of the main theoretical constructs related to leadership; the pedagogical underpinning of medical leadership programs; their learning objectives; and the mixture of methods, individual and collective, to achieve them. Insights: How to best develop leadership through medical education remains an open debate. Experiential learning, reflective practice, action learning, and mentoring could provide the foundations of leadership development. Application of the aforementioned should be cautious due to limitations of the concept of leadership as currently promoted and lack of robust evaluation methodologies. 相似文献
22.
23.
24.
M. Zamparas V.C. Kapsalis G.L. Kyriakopoulos K.G. Aravossis A.E. Kanteraki A. Vantarakis I.K. Kalavrouziotis 《Sustainable Chemistry and Pharmacy》2019
At this study a multi-criteria model was developed to examine the available procedures, techniques and methods of handling infectious waste in the large healthcare unit of University Regional General Hospital of Patras, Western Greece. Particularly, this study examined the: a) current legislation and Directives issued for medical waste management at Greece and among the other EU-members, b) contribution of healthcare wastes (HCW) generation rate on social and economic parameters in selected European countries, c) available procedures, techniques, and methods upon the disposal of infectious wastes at the healthcare studied, and, d) propositions for integrated management of such hazardous wastes. Specifically, the Analytic Hierarchy Process (AHP) methodology was applied under pair wise comparison matrices in two stages: 1) the scale factors and the indicators, and 2) the criteria and their sub–criteria. The assessment of these pair wise matrices included the indicators and the sub–criteria. Subsequently, two pair wise comparison matrices, upon a) the “Fulfillment of environmental objectives” indicator and b) the “Energy consumption” sub criterion, were denoted. The AHP methodology yielded good results; however there is still space of improving the environmental performance. The normalized relative weights obtained for the criteria and sub criteria motivated specific actions that have to be handled. Particularly, the results indicated a very good value in environmental management criteria due the values obtained for the commitment towards the environmental policy standards and the waste management procedures. However, further improvements on staff awareness (such as development programs to enhance sensitivity) and more green purchasing suppliers, should be further addressed. 相似文献
25.
Salvatore Greco Beatrice Bonsi Nicol Fabbri 《World Journal of Experimental Medicine》2022,12(5):104-107
Even if the relationships between nutrition and inflammatory bowel disease (IBD) remain underexplored, the current literature is providing, day by day, much more evidence on the effects of various diets in both prevention and treatment of such illnesses. Wrong dietary habits, together with other environmental factors such as pollution, breastfeeding, smoke, and/or antibiotics, are among the theoretical pathogenetic causes of IBD, whose multifactorial aetiology has been already confirmed. While some of these risk factors are potentially reversible, some others cannot be avoided, and efficient treatments become necessary to prevent IBD spread or recurrence. Furthermore, the drugs currently available for treatment of such disease provide low-to-no effect against the symptoms, making the illnesses still strongly disabling. Whether nutrition and specific diets will prove to effectively interrupt the course of IBD has still to be clarified and, in this sense, further research concerning the applications of such dietary interventions is still needed. 相似文献
26.
27.
《Journal of pediatric surgery》2023,58(6):1213-1218
IntroductionEndoscopic surveillance guidelines for patients with repaired esophageal atresia (EA) rely primarily on expert opinion. Prior to embarking on a prospective EA surveillance registry, we sought to understand EA surveillance practices within the Eastern Pediatric Surgery Network (EPSN).MethodsAn anonymous, 23-question Qualtrics survey was emailed to 181 physicians (surgeons and gastroenterologists) at 19 member institutions. Likert scale questions gauged agreement with international EA surveillance guideline-derived statements. Multiple-choice questions assessed individual and institutional practices.ResultsThe response rate was 77%. Most respondents (80%) strongly agree or agree that EA surveillance endoscopy should follow a set schedule, while only 36% claimed to perform routine upper GI endoscopy regardless of symptoms. Many institutions (77%) have an aerodigestive clinic, even if some lack a multi-disciplinary EA team. Most physicians (72%) expressed strong interest in helping develop evidence-based guidelines.ConclusionsOur survey reveals physician agreement with current guidelines but weak adherence. Surveillance methods vary greatly, underscoring the lack of evidence-based data to guide EA care. Aerodigestive clinics may help implement surveillance schedules. Respondents support evidence-based protocols, which bodes well for care standardization. Results will inform the first multi-institutional EA databases in the United States (US), which will be essential for evidence-based care.Level of EvidenceThis is a prognosis study with level 4 evidence. 相似文献
28.
29.
30.