全文获取类型
收费全文 | 2420203篇 |
免费 | 179735篇 |
国内免费 | 4150篇 |
专业分类
耳鼻咽喉 | 32961篇 |
儿科学 | 78052篇 |
妇产科学 | 64550篇 |
基础医学 | 357691篇 |
口腔科学 | 65531篇 |
临床医学 | 217595篇 |
内科学 | 473622篇 |
皮肤病学 | 53305篇 |
神经病学 | 192243篇 |
特种医学 | 90782篇 |
外国民族医学 | 506篇 |
外科学 | 364667篇 |
综合类 | 48991篇 |
现状与发展 | 12篇 |
一般理论 | 888篇 |
预防医学 | 186900篇 |
眼科学 | 55480篇 |
药学 | 180708篇 |
13篇 | |
中国医学 | 5023篇 |
肿瘤学 | 134568篇 |
出版年
2021年 | 20883篇 |
2019年 | 21121篇 |
2018年 | 28943篇 |
2017年 | 21859篇 |
2016年 | 24384篇 |
2015年 | 27507篇 |
2014年 | 38498篇 |
2013年 | 57270篇 |
2012年 | 79220篇 |
2011年 | 84082篇 |
2010年 | 50027篇 |
2009年 | 47185篇 |
2008年 | 78594篇 |
2007年 | 83543篇 |
2006年 | 83994篇 |
2005年 | 81338篇 |
2004年 | 78108篇 |
2003年 | 75274篇 |
2002年 | 72890篇 |
2001年 | 110710篇 |
2000年 | 113272篇 |
1999年 | 95013篇 |
1998年 | 27785篇 |
1997年 | 24286篇 |
1996年 | 24597篇 |
1995年 | 23216篇 |
1994年 | 21333篇 |
1993年 | 20117篇 |
1992年 | 72915篇 |
1991年 | 71001篇 |
1990年 | 69162篇 |
1989年 | 66458篇 |
1988年 | 60983篇 |
1987年 | 59789篇 |
1986年 | 55873篇 |
1985年 | 53604篇 |
1984年 | 39750篇 |
1983年 | 33815篇 |
1982年 | 20143篇 |
1979年 | 36219篇 |
1978年 | 25900篇 |
1977年 | 21455篇 |
1976年 | 20564篇 |
1975年 | 22119篇 |
1974年 | 26477篇 |
1973年 | 25106篇 |
1972年 | 23482篇 |
1971年 | 22296篇 |
1970年 | 20473篇 |
1969年 | 19547篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
61.
62.
Olga A. Klein Avril Drummond Jacqueline R. Mhizha-Murira Laura Mansford Roshan dasNair 《Neuropsychological rehabilitation》2019,29(4):491-512
While previous randomised controlled trials and meta-analyses offer only limited evidence for the effectiveness of cognitive rehabilitation, qualitative studies examining patient perspectives report more positive outcomes. This meta-synthesis of qualitative studies examined patient perspectives of cognitive rehabilitation for memory, attention, and executive function problems in people with multiple sclerosis. Using set eligibility criteria, we screened electronic databases, reference lists, and academic networks for relevant papers. Seven papers (195 participants) were selected. Two independent researchers conducted quality appraisals of papers. Data analysis, guided by the thematic synthesis approach, yielded six main themes. These suggested that patients benefitted from the group environment in rehabilitation. Cognitive rehabilitation facilitated the participants’ reflection and awareness of their cognitive deficits, and was associated with increased knowledge and understanding of their illness. Increased strategy use was reported and associated with improvements in cognitive functioning and greater confidence and perseverance. Participants reported emotional and social improvements, and felt more optimistic. Overall, these changes had a positive impact on participants’ quality of life. This synthesis of qualitative studies indicates that people with multiple sclerosis who experience cognitive deficits benefit from cognitive rehabilitation programmes. This finding must, however, be viewed in light of the limitations of this meta-synthesis. The meta-synthesis was registered in the PROSPERO database under CRD42017040148. 相似文献
63.
Carlo De-Carolis Geraldine-A. Boyd Luca Mancinelli Stefano Pagano Stefano Eramo 《Medicina oral, patología oral y cirugía bucal》2015,20(2):e205-e210
With easy chemical synthesis from its precursor, methamphetamine (MA) is now widespread in many countries. The abuse of methamphetamine is associated with several negative effects on health, because MA is a neurotoxin and a dangerous central nervous system stimulant. It changes levels of neurotransmitters in the brain, releasing dopamine and inhibiting nor epinephrine uptake which increases sympathetic nervous system activity and can lead to cardiac arrhythmia, hypertension and tachypnea. The consequences of MA abuse are clearly manifested in oral diseases (like “meth mouth”) which is characterised by extensive caries, teeth grinding with ensuing dental wear and trismus. The present review was designed to fill the gap in knowledge about methamphetamine abuse in the European Union (EU) and to illustrate the main clinical effects of prolonged use. After describing the pharmacology and systemic effects of methamphetamine and concentrating on its effects on the mouth, the present review compares the epidemiology and incidence of abuse in the world, particularly the USA and the EU.
Key words:Methamphetamine, “Meth mouth”, drug abuse, oral health. 相似文献
64.
B Maybury A Powell-Chandler N Kumar 《Annals of the Royal College of Surgeons of England》2015,97(3):e37-e38
We report two British cases of liver abscess, due to Klebsiella pneumoniae and associated with synchronous infection elsewhere, which required liver resection for definitive treatment. They illustrate the geographic spread of aggressive K pneumoniae liver infection and demonstrate the importance of early aggressive treatment. 相似文献
65.
66.
Alina Goldenberg B.A. Catalina Matiz M.D. Lawrence F. Eichenfield M.D. 《Pediatric dermatology》2015,32(4):e191-e192
Henna, derived from a combination of natural leaves and coloring additives, is a common decorative dye traditionally used in many Islamic religious celebrations. Para‐phenylenediamine (PPD), a major component of black henna tattoo, is a strong sensitizer and common allergen. We report a case of severe connubial allergic contact dermatitis after black henna heterotransfer in a girl. 相似文献
67.
68.
Loss‐of‐function mutations in the gene encoding filaggrin underlie a Japanese family with food‐dependent exercise‐induced anaphylaxis
下载免费PDF全文
![点击此处可从《Journal of the European Academy of Dermatology and Venereology》网站下载免费的PDF全文](/ch/ext_images/free.gif)
69.
P. A. Hannan J. A. Khan A. Khan S. Safiullah 《Indian journal of pharmaceutical sciences》2016,78(1):2-7
Dosage form is a mean used for the delivery of drug to a living body. In order to get the desired effect the drug should be delivered to its site of action at such rate and concentration to achieve the maximum therapeutic effect and minimum adverse effect. Since oral route is still widely accepted route but having a common drawback of difficulty in swallowing of tablets and capsules. Therefore a lot of research has been done on novel drug delivery systems. This review is about oral dispersible tablets a novel approach in drug delivery systems that are now a day''s more focused in formulation world, and laid a new path that, helped the patients to build their compliance level with the therapy, also reduced the cost and ease the administration especially in case of pediatrics and geriatrics. Quick absorption, rapid onset of action and reduction in drug loss properties are the basic advantages of this dosage form. 相似文献
70.