全文获取类型
收费全文 | 5314篇 |
免费 | 211篇 |
国内免费 | 43篇 |
专业分类
耳鼻咽喉 | 335篇 |
儿科学 | 97篇 |
妇产科学 | 195篇 |
基础医学 | 376篇 |
口腔科学 | 143篇 |
临床医学 | 690篇 |
内科学 | 569篇 |
皮肤病学 | 120篇 |
神经病学 | 328篇 |
特种医学 | 242篇 |
外科学 | 640篇 |
综合类 | 606篇 |
一般理论 | 1篇 |
预防医学 | 633篇 |
眼科学 | 43篇 |
药学 | 329篇 |
15篇 | |
中国医学 | 83篇 |
肿瘤学 | 123篇 |
出版年
2023年 | 70篇 |
2022年 | 130篇 |
2021年 | 196篇 |
2020年 | 196篇 |
2019年 | 330篇 |
2018年 | 322篇 |
2017年 | 203篇 |
2016年 | 150篇 |
2015年 | 148篇 |
2014年 | 304篇 |
2013年 | 421篇 |
2012年 | 275篇 |
2011年 | 310篇 |
2010年 | 256篇 |
2009年 | 225篇 |
2008年 | 246篇 |
2007年 | 190篇 |
2006年 | 186篇 |
2005年 | 142篇 |
2004年 | 96篇 |
2003年 | 77篇 |
2002年 | 79篇 |
2001年 | 49篇 |
2000年 | 50篇 |
1999年 | 48篇 |
1998年 | 35篇 |
1997年 | 30篇 |
1996年 | 26篇 |
1995年 | 24篇 |
1994年 | 22篇 |
1993年 | 12篇 |
1992年 | 10篇 |
1991年 | 13篇 |
1990年 | 7篇 |
1988年 | 11篇 |
1987年 | 14篇 |
1986年 | 11篇 |
1985年 | 78篇 |
1984年 | 88篇 |
1983年 | 58篇 |
1982年 | 53篇 |
1981年 | 49篇 |
1980年 | 46篇 |
1979年 | 55篇 |
1978年 | 44篇 |
1977年 | 34篇 |
1976年 | 34篇 |
1975年 | 39篇 |
1974年 | 34篇 |
1973年 | 30篇 |
排序方式: 共有5568条查询结果,搜索用时 16 毫秒
61.
于纪航 《预防医学文献信息》2013,(2):205-207
随着高校招生规模的不断扩大,家庭贫困的学生人数也在逐年攀升,这成为了国家、社会和高校共同关注的问题。2007年,国家颁布了《关于建立健全普通本科高校、高等职业学校和中等职业学校家庭经济困难学生资助政策体系的意见》。新资助政策体系的建立,虽然在实践中起到一定积极作用,但在具体实施过程中陆续暴露出界定及资助标准单一、经济困难学生自身认识不足等问题。 相似文献
62.
63.
《Global public health》2013,8(7):745-768
Since 2002, ageing populations worldwide have received increasing attention by global policy-makers. However, resources committed by inter-governmental donors and US-based private foundations in support of ageing-related policies and interventions in non-Organisation for Economic Co-operation and Development (OECD) countries have remained minimal during this decade and, where mobilised, have rarely responded to actual country-level demographics and institutional capacities. We argue that this lag between issue recognition and effective resource mobilisation, while mirroring known dynamics in global agenda-setting, has also been caused by a depiction of ageing as a uniform trend across the Global South. We develop and apply a comprehensive analytical framework to assess the state of ageing dynamics at the country level and uncover substantial regional and sub-regional variation. In response, we suggest replacing complexity reduction in the interest of issue recognition with targeted support for a more nuanced research agenda and policy debate on country-specific ageing dynamics in order to inform and catalyse effective international assistance. 相似文献
64.
65.
《International journal of audiology》2013,52(5-6):277-282
The main advantages of wearing 2 ear level hearing aids are the possibilities of directional hearing and of avoiding the acoustical head shadow. These effects are rather easy to measure. There exists another effect which would seem, at first sight, to be of major importance: The fact that in an environment of hampering sounds one understands better with 2 ears than with only 1: the cocktail party effect (CPE).As in already described [Kuyper and de Boer, 1969] there are many ways to measure and even to define the CPE. The most natural way (and the best if one investigates hearing aids) is to use loudspeakers. Carhart [1965] describes a method which avoids the effect of head shadow. Unfortunately it was impossible for us to obtain in double prothetized subjects an effect which was greater than the variance.In order to avoid this variance we improved a method developed by Feldmann in 1963, and in this way succeeded in obtaining significant results for each single subject.Applying this method on prothetized subjects, forced us to use the telephone coil instead of the microphone of the post-aural hearing-aids. 相似文献
66.
67.
Patience Seebohm Sarah Chaudhary Melanie Boyce Ruth Elkan Mark Avis Carol Munn‐Giddings 《Health & social care in the community》2013,21(4):391-401
This article explores the contribution of self‐help/mutual aid groups to mental well‐being. Self‐help/mutual aid groups are self‐organising groups where people come together to address a shared a health or social issue through mutual support. They are associated with a range of health and social benefits, but remain poorly understood. This article draws on data from stage one of ESTEEM, a project which runs from 2010 to 2013. Stage one ran from 2010 to 2011 and involved participatory, qualitative research carried out in two UK sites. Twenty‐one groups were purposively selected to include a range of focal issues, longevity, structures and ethnic backgrounds. Researchers carried out 21 interviews with group coordinators and twenty group discussions with members to explore the groups' purpose, nature and development. Preliminary analysis of the data suggested that mental well‐being was a common theme across the groups. Subsequently the data were re‐analysed to explore the groups' contribution to mental well‐being using a checklist of protective factors for mental well‐being as a coding framework. The findings showed that groups made a strong contribution to members' mental well‐being by enhancing a sense of control, increasing resilience and facilitating participation. Group members were uplifted by exchanging emotional and practical support; they gained self‐esteem, knowledge and confidence, thereby increasing their control over their situation. For some groups, socio‐economic factors limited their scope and threatened their future. The article provides an evidence‐base which illustrates how self‐help/mutual aid groups can enhance mental well‐being. If supported within a strategy for social justice, these groups enable people with varied concerns to develop a tailored response to their specific needs. The authors suggest that policy‐makers engage with local people, investing in support proportionate to the needs of different populations, enabling them to develop their own self‐help/mutual aid groups to enhance their sense of mental well‐being. 相似文献
68.
Multicentric reticulohistiocytosis (MRH) is a very rare systemic disease with variable phenotypic presentation and a high rate of misdiagnosis. Here we describe a patient with MRH and extra-mammillary Paget’s disease (EMPD), a diagnosis that has not previously been described in the literature. 相似文献
69.
70.
Sebastián Vargas-Cáceres Nicoletta Cera Pedro Nobre J. Antoni Ramos-Quiroga 《The journal of sexual medicine》2021,18(3):457-466
BackgroundSexual dysfunction among psychotic patients is highly prevalent. However, most research has focused on antipsychotic side effects on sexual functioning.AimTo provide evidence by means of a systematic review of the literature about the impact of psychosis on sexual functioning among unmedicated patients.MethodsSystematic search of MEDLINE (PubMed), Scopus, and Google Scholar for studies that reported sexual functioning among psychotic patients, who were drug-naïve or drug-free for at least 3 weeks before the study. Studies were published in English language between January 1994 and October 2019. We used the approach recommended by PRISMA, and the selection process was carried out by 2 reviewers.OutcomesThe outcome measures were sexual function and sexual dysfunctions.ResultsA total of 734 articles were obtained, 658 were obtained after duplicates were removed, 612 were excluded after reading the title and abstract, and 46 were included for a complete review of the articles. 5 papers were finally included. A total of 770 cases were included in the systematic review. The prevalence of sexual dysfunction in psychosis varied from 16.8% to 70% and in ultra-high state was 50%. It is noteworthy that those ultra–high-risk (prodromal) patients who develop psychosis had higher rates of sexual impairment. Therefore, we found higher rates of sexual dysfunction among untreated patients, both psychotic and ultra-high risk patients, than healthy controls.Clinical ImplicationsThe assessment of sexual behavior should be a part of routine psychiatric examination not only in psychotic but also in ultra–high-risk patients.Strengths & LimitationsThis is the first systematic review about the impact of psychosis on sexual functioning among unmedicated patients. However, scarce and heterogeneous studies were identified.ConclusionsImpaired sexual functioning is common in the onset of psychosis (or during ultra–high-risk state) and prior to the beginning of treatment. This suggests that psychotic symptoms and sexual dysfunction may have common etiological pathways at the psychosocial and neurobiological levels.Vargas-Cáceres S, Cera N, Nobre P, et al. The Impact of Psychosis on Sexual Functioning: A Systematic Review. J Sex Med 2021;18:457–466. 相似文献