全文获取类型
收费全文 | 4036篇 |
免费 | 303篇 |
国内免费 | 31篇 |
专业分类
耳鼻咽喉 | 39篇 |
儿科学 | 120篇 |
妇产科学 | 66篇 |
基础医学 | 523篇 |
口腔科学 | 67篇 |
临床医学 | 420篇 |
内科学 | 920篇 |
皮肤病学 | 46篇 |
神经病学 | 381篇 |
特种医学 | 201篇 |
外科学 | 634篇 |
综合类 | 21篇 |
一般理论 | 1篇 |
预防医学 | 211篇 |
眼科学 | 47篇 |
药学 | 358篇 |
中国医学 | 4篇 |
肿瘤学 | 311篇 |
出版年
2023年 | 26篇 |
2022年 | 37篇 |
2021年 | 103篇 |
2020年 | 64篇 |
2019年 | 105篇 |
2018年 | 119篇 |
2017年 | 80篇 |
2016年 | 95篇 |
2015年 | 114篇 |
2014年 | 156篇 |
2013年 | 178篇 |
2012年 | 307篇 |
2011年 | 278篇 |
2010年 | 173篇 |
2009年 | 152篇 |
2008年 | 251篇 |
2007年 | 254篇 |
2006年 | 260篇 |
2005年 | 242篇 |
2004年 | 210篇 |
2003年 | 228篇 |
2002年 | 219篇 |
2001年 | 17篇 |
2000年 | 20篇 |
1999年 | 23篇 |
1998年 | 49篇 |
1997年 | 45篇 |
1996年 | 28篇 |
1995年 | 23篇 |
1994年 | 17篇 |
1993年 | 17篇 |
1992年 | 11篇 |
1991年 | 12篇 |
1989年 | 12篇 |
1988年 | 26篇 |
1986年 | 14篇 |
1985年 | 20篇 |
1984年 | 15篇 |
1983年 | 18篇 |
1982年 | 10篇 |
1981年 | 21篇 |
1980年 | 18篇 |
1978年 | 12篇 |
1977年 | 16篇 |
1976年 | 19篇 |
1975年 | 12篇 |
1973年 | 18篇 |
1965年 | 10篇 |
1964年 | 10篇 |
1960年 | 11篇 |
排序方式: 共有4370条查询结果,搜索用时 46 毫秒
91.
Georgia R. Gore‐Langton Matthew Cairns Yves Daniel Compaor Issaka Sagara Irene Kuepfer Issaka Zongo Mariken M. de Wit Amadou Barry Modibo Diarra Amadou Tapily Samba Coumare Ismail Thera Frederic Nikiema R. Serge Yerbanga Rosemonde M. Guissou Halidou Tinto Alassane Dicko Daniel Chandramohan Brian Greenwood Jean Bosco Ouedraogo 《Tropical medicine & international health : TM & IH》2020,25(6):740-750
92.
A novel biodegradable stent applicable for use in congenital heart disease: Bench testing and feasibility results in a rabbit model
下载免费PDF全文
![点击此处可从《Catheterization and cardiovascular interventions》网站下载免费的PDF全文](/ch/ext_images/free.gif)
93.
94.
95.
Kyoko Kawasaki Julia Freimuth Dominique S. Meyer Marie M. Lee Akiko Tochimoto-Okamoto Michael Benzinou Frederic F. Clermont Gloria Wu Ritu Roy Tom G. W. Letteboer Johannes Kristian Ploos van Amstel Sophie Giraud Sophie Dupuis-Girod Gaeten Lesca Cornelius J. J. Westermann Robert J. Coffey Jr. Rosemary J. Akhurst 《Proceedings of the National Academy of Sciences of the United States of America》2014,111(21):7723-7728
96.
Florian Grahammer Nora Haenisch Frederic Steinhardt Lukas Sandner Malte Roerden Frederic Arnold Tomke Cordts Nicola Wanner Wilfried Reichardt Dontscho Kerjaschki Markus A. Ruegg Michael N. Hall Pierre Moulin Hauke Busch Melanie Boerries Gerd Walz Ferruh Artunc Tobias B. Huber 《Proceedings of the National Academy of Sciences of the United States of America》2014,111(27):E2817-E2826
97.
98.
99.
Martinez-Gomez D Gomez-Martinez S Ruiz JR Diaz LE Ortega FB Widhalm K Cuenca-Garcia M Manios Y De Vriendt T Molnar D Huybrechts I Breidenassel C Gottrand F Plada M Moreno S Ferrari M Moreno LA Sjöström M Marcos A;HELENA Study Group 《Atherosclerosis》2012,221(1):260-267
ObjectiveAtherogenesis involves an inflammatory process that occurs early in life even though clinical symptoms are not observed until adulthood. Two important protective factors for low-grade inflammation may be physical activity (PA) and fitness. We examined the independent associations of objective and subjective measurements of PA and fitness with low-grade inflammation in European adolescents.MethodsA total of 1045 adolescents, aged from 12.5 to 17.5 years old from 10 European cities, were selected from the HELENA-Cross-Sectional Study. Objectively-measured and self-reported PA variables were obtained by accelerometry and the International PA Questionnaire for Adolescents, respectively. Overall, cardiorespiratory, muscular and motor fitness variables were assessed by standardized field-based fitness tests and the International Fitness Scale. C-reactive protein (CRP), complement factors 3 (C3) and 4 (C4), interleukin-6 and TNF-α inflammatory markers were measured.ResultsObjectively-measured vigorous PA was inversely associated with C3 (β = ?0.094, P = 0.021) but it did not remain significant after any objective fitness indicator was included in the model. Other objectively measured or self-reported assessments of PA were not significantly associated with inflammatory markers. All objective measures of fitness were inversely associated with CRP, C3 and C4, whereas only self-reported motor fitness remained significantly associated with C3, C4 and TNF-α. All these observations were independent of age, sex, city and body mass index or waist circumference.ConclusionHigh PA in adolescence may play an indirect role on lessening low-grade inflammation through improvements in fitness. 相似文献
100.
Merabet N Bellien J Glevarec E Nicol L Lucas D Remy-Jouet I Bounoure F Dreano Y Wecker D Thuillez C Mulder P 《Journal of molecular and cellular cardiology》2012,52(3):660-666
The study addressed the hypothesis that soluble epoxide hydrolase (sEH) inhibition, which increases cardiovascular protective epoxyeicosatrienoic acids (EETs), exerts beneficial effects in an established chronic heart failure (CHF) model. In CHF rats, left ventricular (LV) function, perfusion and remodeling were assessed using MRI and invasive hemodynamics after 42-day (starting 8 days after coronary ligation) and delayed 3-day (starting 47 days after coronary ligation) treatments with the sEH inhibitor AUDA (twice 0.25 mg/day). Delayed 3-day and 42-day AUDA increased plasma EETs demonstrating the effective inhibition of sEH. Delayed 3-day and 42-day AUDA enhanced cardiac output without change in arterial pressure, thus reducing total peripheral resistance. Both treatment periods increased the slope of the LV end-systolic pressure-volume relation, but only 42-day AUDA decreased LV end-diastolic pressure, relaxation constant Tau and the slope of the LV end-diastolic pressure-volume relation, associated with a reduced LV diastolic volume and collagen density. Delayed 3-day and, to a larger extent, 42-day AUDA increased LV perfusion associated with a decreased LV hypoxia-inducible factor-1alpha. Both treatment periods decreased reactive oxygen species level and increased reduced-oxidized glutathione ratio. Finally, MSPPOH, an inhibitor of the EET-synthesizing enzyme cytochrome epoxygenases, abolished the beneficial effects of 3-day AUDA on LV function and perfusion. Augmentation of EET availability by pharmacological inhibition of sEH increases LV diastolic and systolic functions in established CHF. This notably results from short-term processes, i.e. increased LV perfusion, reduced LV oxidative stress and peripheral vasodilatation, but also from long-term effects, i.e. reduced LV remodeling. 相似文献