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   29236篇
  免费   2433篇
  国内免费   496篇
耳鼻咽喉   482篇
儿科学   1163篇
妇产科学   488篇
基础医学   2762篇
口腔科学   1224篇
临床医学   2971篇
内科学   4593篇
皮肤病学   449篇
神经病学   8165篇
特种医学   459篇
外科学   1385篇
综合类   2014篇
现状与发展   3篇
一般理论   1篇
预防医学   3065篇
眼科学   224篇
药学   1938篇
  7篇
中国医学   462篇
肿瘤学   310篇
  2024年   72篇
  2023年   702篇
  2022年   734篇
  2021年   1532篇
  2020年   1482篇
  2019年   1387篇
  2018年   1353篇
  2017年   1293篇
  2016年   1217篇
  2015年   1109篇
  2014年   1827篇
  2013年   2736篇
  2012年   1428篇
  2011年   1696篇
  2010年   1291篇
  2009年   1355篇
  2008年   1394篇
  2007年   1260篇
  2006年   1107篇
  2005年   874篇
  2004年   779篇
  2003年   799篇
  2002年   638篇
  2001年   461篇
  2000年   404篇
  1999年   368篇
  1998年   347篇
  1997年   304篇
  1996年   237篇
  1995年   228篇
  1994年   198篇
  1993年   178篇
  1992年   189篇
  1991年   137篇
  1990年   145篇
  1989年   85篇
  1988年   97篇
  1987年   94篇
  1986年   74篇
  1985年   115篇
  1984年   78篇
  1983年   61篇
  1982年   54篇
  1981年   50篇
  1980年   33篇
  1979年   37篇
  1978年   35篇
  1977年   29篇
  1976年   17篇
  1975年   12篇
排序方式: 共有10000条查询结果,搜索用时 125 毫秒
51.
52.
53.
ObjectivePilates is used increasingly in a variety of clinical settings. However, there is lack of clarity in the literature as to what is meant by the term. Teachers incorporating apparatus based on the designs of Joseph Pilates (1883–1967) into their practice refer to themselves as Comprehensive Teachers, and this group divides itself further into Classical and Contemporary practice. The aim of this research was to explore the meanings of these terms with Comprehensive Teachers and to develop a framework that reflects current views and practice.MethodOnline international survey of Pilates Teachers through closed Facebook forums. Open questions were used to elicit views of the definition and practice of Pilates, and how standards should be set across the sector.ResultsOf 109 participants, 35% were based in the UK and 32% in the USA; 48% identified as Classical teachers, 32% as Contemporary, 5% as both and 15% as Matwork instructors. A thematic analysis of the qualitative data revealed agreement on the scope and content of Classical and Contemporary Comprehensive Pilates, however the discourse indicated there might be stereotyping about each other's practice. Classical teachers, for example, spoke of their own practice as authentic while Contemporary teachers used terms such as strict and inflexible for Classical practice. However, members of either group may incorporate both Classical and Contemporary approaches within their practice. We have designed a Pilates Teaching Framework to take into account the types of apparatus, the types of exercises and the order in which the exercises are executed.ConclusionsA framework that emphasises Pilates teaching rather than teacher practice is proposed for consistency and clarity when describing Pilates in professional and public contexts.  相似文献   
54.
Children with autism spectrum disorder (ASD) demonstrate limited playfulness. Their difficulty engaging in meaningful interaction with others renders playful engagement in social interactions a challenge. Although little direct evidence exists regarding the promotion of these children’s playful engagement, links can be established with many traits cited in play and social interaction studies. This paper presents the results of a conceptual clarification exercise regarding the key behaviours associated with the construct of playful engagement in preschool-aged children with ASD. Behaviours were identified based on hallmark deficits in early social interactions and play of children with ASD. The analysis revealed the following behaviours: positive affect, engagement, imitation, joint attention, initiation of social interaction, social responsiveness, flexibility, child’s laughter in funny situations and giving and reading non-verbal cues. In conclusion, a conceptually coherent stage has been set for exploring the literature regarding interventions to promote the playful engagement of preschool-aged children with ASD.  相似文献   
55.
Hair shaft disorders, involving dysplastic abnormalities in the shaft, may be either congenital or acquired. Two large categories have been defined according to the presence or not of hair fragility. A diagnosis can usually be made after taking a thorough medical history and performing a physical examination. Trichoscopy has become a useful, cost-effective tool in recent years, particularly for examining the hair of children, because it facilitates inspection without removal of hairs. Structural abnormalities in the hair shaft are sometimes clues to the diagnosis of more complex diseases in which early treatment can improve prognosis. This review describes key features that enable the diagnosis of the most common hair shaft disorders and discusses the various treatments currently available.  相似文献   
56.
57.
《Surgery (Oxford)》2022,40(11):731-737
Disorders of sex development (DSD) occur in 1–2/10,000 live births, with a specific molecular diagnosis only possible in 20% of cases. Presentation is usually at birth, and gender assignment must be avoided before review by an expert multidisciplinary team. Initial investigations allow a working diagnosis to be made within 48 hr. In 46,XY DSD, surgery may be necessary to correct hypospadias, reposition or remove undescended testes, and remove symptomatic Müllerian remnants. In 46,XX DSD, feminizing surgery is performed less frequently than in the past, but genitoplasty may still be indicated. Psychosocial support is required to promote positive adaptation as gender dissatisfaction can occur in certain conditions. Long-term outcome data are sparse.  相似文献   
58.
59.
60.
IntroductionTo disentangle the association between impulsive and compulsive behaviors (ICBs), health-related quality of life (HRQOL), satisfaction with life (SwL), and caregiver distress in dyads of people with Parkinson's disease (PwP) and caregivers.MethodsData used in this study were obtained from the ongoing Norwegian ParkWest study, a population-based longitudinal cohort study of the incidence, neurobiology and prognosis of PD in Western Norway. One hundred and one dyads of PwP free of dementia and their caregivers were included 5 years after PD diagnosis and inclusion in the ParkWest study. Standardized clinical rating scales were used to evaluate ICBs, HRQOL, SwL and caregiver distress.ResultsOf 101 PwP-caregiver dyads, self-reported ICBs were seen in 33% of PwP and only caregiver-reported ICBs in 12% of PwP. PwP-reported ICBs were associated with poorer HRQOL and SwL, whereas ICBs reported by caregivers only were associated with increased caregiver distress, but not poorer HRQOL or SwL in PwP.ConclusionsICBs have adverse effects on HRQOL, SwL and caregiver distress. These findings underpin the need for proper identification and management of ICBs in PwP.  相似文献   
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