全文获取类型
收费全文 | 38067篇 |
免费 | 2182篇 |
国内免费 | 121篇 |
专业分类
耳鼻咽喉 | 555篇 |
儿科学 | 883篇 |
妇产科学 | 796篇 |
基础医学 | 5208篇 |
口腔科学 | 3663篇 |
临床医学 | 2605篇 |
内科学 | 7705篇 |
皮肤病学 | 908篇 |
神经病学 | 3235篇 |
特种医学 | 900篇 |
外国民族医学 | 6篇 |
外科学 | 4066篇 |
综合类 | 201篇 |
一般理论 | 10篇 |
预防医学 | 4545篇 |
眼科学 | 654篇 |
药学 | 2844篇 |
中国医学 | 358篇 |
肿瘤学 | 1228篇 |
出版年
2023年 | 340篇 |
2022年 | 345篇 |
2021年 | 1167篇 |
2020年 | 840篇 |
2019年 | 1115篇 |
2018年 | 1584篇 |
2017年 | 1120篇 |
2016年 | 1104篇 |
2015年 | 1217篇 |
2014年 | 1576篇 |
2013年 | 2021篇 |
2012年 | 3180篇 |
2011年 | 3583篇 |
2010年 | 1714篇 |
2009年 | 1180篇 |
2008年 | 2457篇 |
2007年 | 2466篇 |
2006年 | 2000篇 |
2005年 | 1922篇 |
2004年 | 1833篇 |
2003年 | 1523篇 |
2002年 | 1193篇 |
2001年 | 688篇 |
2000年 | 703篇 |
1999年 | 524篇 |
1998年 | 159篇 |
1997年 | 94篇 |
1996年 | 84篇 |
1995年 | 85篇 |
1994年 | 90篇 |
1993年 | 78篇 |
1992年 | 193篇 |
1991年 | 179篇 |
1990年 | 158篇 |
1989年 | 143篇 |
1988年 | 148篇 |
1987年 | 105篇 |
1986年 | 115篇 |
1985年 | 135篇 |
1984年 | 68篇 |
1983年 | 59篇 |
1979年 | 77篇 |
1978年 | 59篇 |
1974年 | 57篇 |
1973年 | 58篇 |
1970年 | 78篇 |
1969年 | 94篇 |
1968年 | 68篇 |
1967年 | 67篇 |
1966年 | 62篇 |
排序方式: 共有10000条查询结果,搜索用时 36 毫秒
1.
Marc Evans MD Susanne Engberg MD Mads Faurby MSc João Diogo Da Rocha Fernandes MSc Pollyanna Hudson MSc William Polonsky PhD 《Diabetes, obesity & metabolism》2022,24(3):377-390
We designed a systematic literature review to identify available evidence on adherence to and persistence with antidiabetic medication in people with type 2 diabetes (T2D). Electronic screening and congress searches identified real-world noninterventional studies (published between 2010 and October 2020) reporting estimates of adherence to and persistence with antidiabetic medication in adults with T2D, and associations with glycaemic control, microvascular and/or macrovascular complications, hospitalizations and healthcare costs. Ninety-two relevant studies were identified, the majority of which were retrospective and reported US data. The proportions of patients considered adherent (median [range] 51.2% [9.4%-84.3%]) or persistent (median [range] 47.7% [16.9%-94.0%]) varied widely across studies. Multiple studies reported an association between greater adherence/persistence and greater reductions in glycated haemoglobin levels. Better adherence/persistence was associated with fewer microvascular and/or macrovascular outcomes, although there was little consistency across studies in terms of which outcomes were improved. More adherent and more persistent patients were typically less likely to be hospitalized or to have emergency department visits/admissions and spent fewer days in hospital annually than less adherent/persistent patients. Greater adherence and persistence were generally associated with lower hospitalization costs, higher pharmacy costs and lower or budget-neutral total healthcare costs compared with lower adherence/persistence. In conclusion, better adherence and persistence in people with T2D is associated with lower rates of microvascular and/or macrovascular outcomes and inpatient hospitalization, and lower or budget-neutral total healthcare expenditure. Education and treatment strategies to address suboptimal adherence and persistence are needed to improve clinical and economic outcomes. 相似文献
2.
Chalub Lucas Orbolato Nunes Gabriel Pereira Ferrisse Túlio Morandin Strazzi-Sahyon Henrico Badaoui Dos Santos Paulo Henrique Gomes-Filho João Eduardo Cintra Luciano Tavares Angelo Sivieri-Araujo Gustavo 《Clinical oral investigations》2022,26(4):3343-3356
Clinical Oral Investigations - The objective of this systematic review and meta-analysis (SRM) was to answer the question whether the use of ultrasonic irrigation (UI) results in less postoperative... 相似文献
3.
Penelas Alice Gonçalves da Silva Eduardo Moreira Fedozzi Julia Mattos Alves Amanda Cypriano Orem Paulo Roberto Barros Poskus Laiza Tatiana Feitosa Victor Pinheiro Guimarães José Guilherme Antunes 《Odontology / the Society of the Nippon Dental University》2022,110(3):569-576
Odontology - This study aimed at evaluating the influence of glass-fiber post (GFP) relining with composites of different opacities on resin cement layer thickness (CLT), bond strength (BS) to root... 相似文献
4.
5.
José Azevedo Patrícia Padrão Maria J. Gregório Carla Almeida Nuno Moutinho Nanna Lien Renata Barros 《Journal of nutrition education and behavior》2019,51(3):326-334
Objective
Assess the impact of a web-based gamification program on nutrition literacy of families and explore differences in impact by socioeconomic status.Design
Quasi-experimental.Setting
Thirty-seven kindergartens from Portugal.Participants
Eight hundred seventy-seven families.Intervention
Web-based social network of participants' interactions, educational materials, apps and nutritional challenges, focused on fruit, vegetables, sugar, and salt.Main Outcome Measures
Parental nutrition literacy (self-reported survey – 4 dimensions: Nutrients, Food portions, Portuguese food wheel groups, Food labeling).Analysis
General linear model – Repeated measures was used to analyze the effect on the nutrition literacy score.Results
Families uploaded 1267 items (recipes, photographs of challenges) and educators uploaded 327 items (photographs, videos) onto the interactive platform. For the intervention group (n?=?106), the final mean (SD) score of nutrition literacy was significantly higher than the baseline: 78.8% (15.6) vs 72.7% (16.2); P < .001, regardless of parental education and perceived income status. No significant differences in the scores of the control group (n?=?83) were observed (final 67.8% [16.1] vs initial 66.4% [15.6]; P?=?.364).Conclusions and Implications
Gamified digital interactive platform seems to be a useful, easily adapted educational tool for the healthy eating learning process. Future implementations of the program will benefit from longer time intervention and assessment of the eating habits of families before and after intervention. 相似文献6.
7.
8.
F.R.L. Sato C.A.A. Lima G. Tralli R.A. da Silva 《International journal of oral and maxillofacial surgery》2019,48(2):233-238
The aim of this study was to evaluate the correlation between clinical signs and symptoms of patients with internal derangement of the temporomandibular joint (TMJ) and arthroscopic findings. The study included a sample of 67 patients who underwent TMJ arthroscopy. The variables evaluated were the arthroscopic findings of synovitis, chondromalacia, adhesion, and roofing. The Spearman correlation index was used to correlate these findings with the clinical signs and symptoms of internal derangement of the TMJ, namely maximum mouth opening, pain (visual analogue scale, VAS), and the Wilkes classification. The mean age of the population was 36.16 years, and 85% were female. There was a correlation between pain and synovitis (P = 0.0029, r = 0.3508), between mouth opening limitation and the amount of adhesion (P = 0.0004, r = ?0.4084), and between Wilkes classification and the presence of chondromalacia and disc displacement (P = 0.001, r = 0.374 and P = 0.0045, r = ?0.3357, respectively). No correlation was found between age and the presence of chondromalacia (P = 0.3444, r = 0.1147). Patients who had worse pain symptoms had more advanced stages of synovitis, and the increased presence of adhesions was associated with limitations in mouth opening. Furthermore, those with more advanced Wilkes stages had greater disc displacement and more severe stages of chondromalacia. 相似文献
9.
10.
Gutierre Marcela Usberti Telles João Paulo Mota Welling Leonardo Christiaan Rabelo Nícollas Nunes Teixeira Manoel Jacobsen Figueiredo Eberval Gadelha 《Neurosurgical review》2021,44(4):2091-2097
Neurosurgical Review - Cellular response to TBI is a mixture of excitotoxicity, neuroinflammation, and cell death. Biomarkers that can track these lesions and inflammatory processes are being... 相似文献