全文获取类型
收费全文 | 69977篇 |
免费 | 5564篇 |
国内免费 | 898篇 |
专业分类
耳鼻咽喉 | 408篇 |
儿科学 | 1165篇 |
妇产科学 | 790篇 |
基础医学 | 3277篇 |
口腔科学 | 1318篇 |
临床医学 | 11454篇 |
内科学 | 6076篇 |
皮肤病学 | 763篇 |
神经病学 | 3100篇 |
特种医学 | 1187篇 |
外科学 | 5637篇 |
综合类 | 13936篇 |
一般理论 | 2篇 |
预防医学 | 8739篇 |
眼科学 | 407篇 |
药学 | 10099篇 |
293篇 | |
中国医学 | 5227篇 |
肿瘤学 | 2561篇 |
出版年
2024年 | 197篇 |
2023年 | 1226篇 |
2022年 | 2342篇 |
2021年 | 3329篇 |
2020年 | 3332篇 |
2019年 | 2903篇 |
2018年 | 2696篇 |
2017年 | 2865篇 |
2016年 | 3206篇 |
2015年 | 3019篇 |
2014年 | 7187篇 |
2013年 | 6978篇 |
2012年 | 5792篇 |
2011年 | 5528篇 |
2010年 | 4096篇 |
2009年 | 3198篇 |
2008年 | 2896篇 |
2007年 | 2714篇 |
2006年 | 2158篇 |
2005年 | 1669篇 |
2004年 | 1306篇 |
2003年 | 1035篇 |
2002年 | 833篇 |
2001年 | 723篇 |
2000年 | 692篇 |
1999年 | 500篇 |
1998年 | 418篇 |
1997年 | 356篇 |
1996年 | 255篇 |
1995年 | 220篇 |
1994年 | 196篇 |
1993年 | 156篇 |
1992年 | 129篇 |
1991年 | 101篇 |
1990年 | 94篇 |
1989年 | 95篇 |
1988年 | 80篇 |
1987年 | 77篇 |
1986年 | 71篇 |
1985年 | 168篇 |
1984年 | 249篇 |
1983年 | 205篇 |
1982年 | 218篇 |
1981年 | 195篇 |
1980年 | 157篇 |
1979年 | 151篇 |
1978年 | 110篇 |
1977年 | 76篇 |
1976年 | 80篇 |
1975年 | 73篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
31.
Summary UK health policy requires child and adolescent mental health service providers to demonstrate that their services are effective.
The FOCUS project has been developed to improve the availability and accessibility of research evidence and innovation, to
support purchasers in the effective commissioning of services and to help providers base service provision on evidence of
effectiveness and develop methods of evaluation. 相似文献
32.
O. A. MIRGHANI† E. O. EL AMIN† M. E. S. ALI† H. S. OSMAN‡ B. HAMAD§ 《Medical education》1988,22(4):314-316
The community-based course presented is a longitudinal course running through four semesters in the Faculty of Medicine, University of Gezira, Sudan. Students combine their regular work in primary health care centres with attachments to a number of families in Wad Medani town. They continue to visit these families regularly throughout their entire medical course with the aim of studying them and helping them with some of their medical and psychosocial problems. 相似文献
33.
Reviews major activities of the Editor and changes in the Journalof Pediatric Psychology (JPP) for issues published in 1993 through1997. Significant trends and accomplishments are reviewed, includingthe increased use of Special Issues and Special Sections tohighlight current pediatric psychological research. Articlespublished during the term are analyzed interms of article typeand population type Comarisons are made to earlier trends inJPP publication as reported by Roberts (1 992). 相似文献
34.
CM Reid M. Nelson P. Beckinsale P. Ryan LMH Wing LJ Beilin MA Brown GLR Jennings CI Johnston J. Marley JJ McNeil TO Morgan J. Shaw ID Steven MJ West 《Clinical and experimental pharmacology & physiology》1997,24(5):370-373
1. The present study aimed to determine the feasibility of conducting a 5 year cardiovascular outcome trial of the treatment of 6000 elderly hypertensive patients in Australian general practices. 2. General practitioners (GPs) were invited to participate by mail and personal follow-up. Patient records were reviewed to identify subjects for a blood pressure (BP) screening programme. Blood pressure was measured on three occasions and eligible subjects were included if the average BP was 160 mmHg systolic or 90 mmHg diastolic if systolic BP was 140 mmHg. 3. Seven hundred and forty-one GPs were approached and 89 were enrolled in the study (12% of mail invites and 75% of those receiving a personal contact). In 16 practices where screening was completed, 82 000 records were reviewed to identify 4% patients eligible for screening. Twenty-two per cent of eligible subjects attended screening. Of 1938 subjects screened, 180 (9%) had BP 5=160/90 mmHg. Forty-seven percent of subjects (n = 916) were receiving antihypertensive therapy and 184 (20%) were withdrawn from therapy. One hundred and sixteen (63%) of these subjects had BP return to study entry levels within 6 weeks. Fifty-seven newly diagnosed and 81 previously treated subjects were randomized (7% of the screened population). 4. Based on the high participation rate of GPs, the response rate of patients to attend a BP screening programme and the 7% randomization to screening ratio for entry into the study, the ANBP2 pilot study has demonstrated that it is feasible to recruit subjects from Australian general practices to a cardiovascular outcome trial. 相似文献
35.
Martin F. Ward Angie Titchen Clare Morrell Brendan McCormack Alison Kitson 《Journal of clinical nursing》1998,7(1):29-36
? The paper describes a multiproject practice development programme undertaken over a period of 1 year. ? The background and development of the programme are outlined, whilst attention is paid to the innovatory nature of the work, particularly the use of inductive, deductive and integrated approaches to both change implementation and project supervision. ? The programme was monitored throughout using different data sources and the paper uses evaluative material retrospectively to provide answers to organizational and professional difficulties which arose during the course of the programme. ? The authors conclude that the use of combinations of different models for practice development has potential, but requires careful supervision. ? They also recommend that those involved in practice development are made fully aware of its local or micropolitics, and develop strategies to deal with change before it occurs, not after it has taken place. 相似文献
36.
Anita MacDonald Dr Sandra Warrington Chairman Professional Development Committee 《Journal of human nutrition and dietetics》1990,3(2):71-77
At the present time, there are many fundamental issues coming from the Department of Health or from other national organizations, which will have an effect on the future development of the dietetic profession. The British Diatetic Association (BDA) Professional Development Committee will consider these issues, as and when appropriate, and will publish the information in the form of Briefing Papers.
The first Briefing Paper on 'Quality Assurance' was published by the BDA in November 1989. The second on 'Measuring clinical outcome' is published below. In each case the opinion of BDA members and specialist groups has been sought and the Professional Development Committee wishes to thank individuals and the specialist groups for their comments.
The Briefing Papers are intended to provide information and promote discussion among the membership. I would welcome further comments from readers, which may be directed to the British Dietetic Association Office. 相似文献
The first Briefing Paper on 'Quality Assurance' was published by the BDA in November 1989. The second on 'Measuring clinical outcome' is published below. In each case the opinion of BDA members and specialist groups has been sought and the Professional Development Committee wishes to thank individuals and the specialist groups for their comments.
The Briefing Papers are intended to provide information and promote discussion among the membership. I would welcome further comments from readers, which may be directed to the British Dietetic Association Office. 相似文献
37.
原发性腹膜后脂肪肉瘤20例报告 总被引:1,自引:0,他引:1
自1965年5月至1991年7月共收治原发性腹膜后脂肪肉瘤20例,均经手术及病理证实。20例中完全切除者15例,部分切除者4例,活检1例。肿瘤切除合并肾,肠襻等邻近器官切除者达12例。全组的5年,10年生存率分别是57.1%和20.0%,完全切除组的5年10年生存率分别是63.6%和28.6%。20例病人共进行了48次切除手术。首次手术死亡2例。着重讨论了本病的诊断、治疗和突出的临床特点。 相似文献
38.
39.
颈动脉加压注射复方维脑路通合剂治疗脑梗死180例临床分析 总被引:1,自引:0,他引:1
本科自 2 0 0 0年 6月以来 ,采用颈动脉加压注射复方维脑路通合剂治疗脑梗死 180例 ,并与静脉给药组相比较 ,现总结如下。1 资料与方法1.1 临床资料 治疗组 180例 ,男 117例 ,女 6 3例 ,年龄 37岁~ 76岁 ,平均年龄 5 7.2 0岁。均为颈内动脉系统脑梗死。其中大面积脑梗死 4例 ,脑梗死 85例 ,腔隙性脑梗死 91例。大面积脑梗死组 4例 ,其梗死灶涉及 2个脑叶或以上 ,均无意识障碍及脑疝者 ,在发病 10d后即脑水肿高峰期后开始颈动脉加压注射。治疗组病例选择除下列禁忌 :①严重高血压病(血压≥ 2 6 .6 / 16kPa) ;②脑出血、出血性梗死 ;③严… 相似文献
40.