全文获取类型
收费全文 | 11908篇 |
免费 | 1010篇 |
国内免费 | 33篇 |
专业分类
耳鼻咽喉 | 126篇 |
儿科学 | 462篇 |
妇产科学 | 320篇 |
基础医学 | 1611篇 |
口腔科学 | 135篇 |
临床医学 | 1652篇 |
内科学 | 2055篇 |
皮肤病学 | 133篇 |
神经病学 | 1326篇 |
特种医学 | 235篇 |
外国民族医学 | 1篇 |
外科学 | 1170篇 |
综合类 | 134篇 |
一般理论 | 16篇 |
预防医学 | 1945篇 |
眼科学 | 114篇 |
药学 | 842篇 |
中国医学 | 6篇 |
肿瘤学 | 668篇 |
出版年
2024年 | 24篇 |
2023年 | 155篇 |
2022年 | 182篇 |
2021年 | 355篇 |
2020年 | 267篇 |
2019年 | 402篇 |
2018年 | 429篇 |
2017年 | 358篇 |
2016年 | 395篇 |
2015年 | 361篇 |
2014年 | 493篇 |
2013年 | 682篇 |
2012年 | 945篇 |
2011年 | 987篇 |
2010年 | 489篇 |
2009年 | 391篇 |
2008年 | 702篇 |
2007年 | 737篇 |
2006年 | 647篇 |
2005年 | 598篇 |
2004年 | 558篇 |
2003年 | 496篇 |
2002年 | 462篇 |
2001年 | 154篇 |
2000年 | 152篇 |
1999年 | 147篇 |
1998年 | 104篇 |
1997年 | 75篇 |
1996年 | 87篇 |
1995年 | 65篇 |
1994年 | 53篇 |
1993年 | 75篇 |
1992年 | 98篇 |
1991年 | 88篇 |
1990年 | 87篇 |
1989年 | 86篇 |
1988年 | 57篇 |
1987年 | 52篇 |
1986年 | 57篇 |
1985年 | 47篇 |
1984年 | 43篇 |
1983年 | 25篇 |
1982年 | 22篇 |
1981年 | 22篇 |
1979年 | 23篇 |
1978年 | 26篇 |
1977年 | 12篇 |
1975年 | 23篇 |
1974年 | 23篇 |
1972年 | 23篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
1.
2.
3.
Joseph M. Northey Kate L. Pumpa Clare Quinlan Ashley Ikin Kellie Toohey Disa J. Smee Ben Rattray 《Journal of Science and Medicine in Sport》2019,22(5):580-585
Objectives
The current study investigated the effects of two exercise interventions on cognitive function amongst breast cancer survivors.Design
Pilot randomised-controlled trial.Methods
Seventeen female cancer survivors (mean: 62.9 ± 7.8 years) were randomised into three groups: high-intensity interval training (HIIT, n = 6); moderate-intensity continuous training (MOD, n = 5); or wait-list control (CON, n = 6). The HIIT and MOD groups exercised on a cycle ergometer 3 days/week for 12-weeks. Primary outcomes were cognitive function assessments utilising CogState. Secondary outcomes were resting middle cerebral artery blood flow velocity, cerebrovascular reactivity and aerobic fitness (VO2peak). Data were analysed with General Linear Mixed Models and Cohen’s d effect sizes were calculated.Results
All 17 participants who were randomised were available for follow-up analysis and adherence was similar for HIIT and MOD (78.7 ± 13.2% vs 79.4 ± 12.0%; p = 0.93). Although there were no significant differences in the cognitive and cerebrovascular outcomes, HIIT produced moderate to large positive effects in comparison to MOD and CON for outcomes including episodic memory, working memory, executive function, cerebral blood flow and cerebrovascular reactivity. HIIT significantly increased VO2peak by 19.3% (d = 1.28) and MOD had a non-significant 5.6% (d = 0.72) increase, compared to CON which had a 2.6% decrease.Conclusions
This study provides preliminary evidence that HIIT may be an effective exercise intervention to improve cognitive performance, cerebrovascular function and aerobic fitness in breast cancer survivors. Considering the sample size is small, these results should be confirmed through larger clinical trials. 相似文献4.
Interaction effects between the 5‐hydroxy tryptamine transporter‐linked polymorphic region (5‐HTTLPR) genotype and family conflict on adolescent alcohol use and misuse
下载免费PDF全文
![点击此处可从《Addiction (Abingdon, England)》网站下载免费的PDF全文](/ch/ext_images/free.gif)
5.
6.
7.
Kate Ridley Tim S Olds Alison Hill 《The international journal of behavioral nutrition and physical activity》2006,3(1):10-11
Background
Self-report recall questionnaires are commonly used to measure physical activity, energy expenditure and time use in children and adolescents. However, self-report questionnaires show low to moderate validity, mainly due to inaccuracies in recalling activity in terms of duration and intensity. Aside from recall errors, inaccuracies in estimating energy expenditure from self-report questionnaires are compounded by a lack of data on the energy cost of everyday activities in children and adolescents. This article describes the development of the Multimedia Activity Recall for Children and Adolescents (MARCA), a computer-delivered use-of-time instrument designed to address both the limitations of self-report recall questionnaires in children, and the lack of energy cost data in children. 相似文献8.
Mary C. Gawlicki MBA Margaret C. Reilly MPH Ana Popielnicki BA Kate Reilly MA 《Value in health》2006,9(3):199-204
INTRODUCTION: There are no measures of health-related absenteeism and presenteeism validated for use in the large and increasing US Spanish-speaking population. Before using a Spanish translation of an available English-language questionnaire, the linguistic validity of the Spanish version must be established to ensure its conceptual equivalence to the original and its cultural appropriateness. OBJECTIVE: The objective of this study was to evaluate the linguistic validity of the US Spanish version of the Work Productivity and Activity Impairment questionnaire, General Health Version (WPAI:GH). METHODS: A US Spanish translation of the US English WPAI:GH was created through a reiterative process of creating harmonized forward and back translations by independent translators. Spanish-speaking and English-speaking subjects residing in the US self-administered the WPAI:GH in their primary language and were subsequently debriefed by a bilingual (Spanish-English) interviewer. RESULTS: US Spanish subjects (N = 31) and English subjects (N = 35), stratified equally by educational level, with and without a high school degree participated in the study. The WPAI-GH item comprehension rate was 98.6% for Spanish and 99.6% for English. Response revision rates during debriefing were 1.6% for Spanish and 0.5% for English. Responses to hypothetical scenarios indicated that both language versions adequately differentiate sick time taken for health and non-health reasons and between absenteeism and presenteeism. CONCLUSION: Linguistic validity of the US Spanish translation of the WPAI:GH was established among a diverse US Spanish-speaking population, including those with minimal education. 相似文献
9.
Nawf Sharief Judith E. Kingston Vanessa M. Wright Kate Costeloe 《Pediatric hematology and oncology》1991,8(4):323-327
We describe a familial case of Marfan's syndrome with associated intrathoracic stomach detected during the neonatal period. The patient developed a primitive leukemia at 3 months of age. Acute leukemia in a patient with Marfan's syndrome has not previously been reported. 相似文献
10.