全文获取类型
收费全文 | 240篇 |
免费 | 37篇 |
出版年
2020年 | 3篇 |
2019年 | 3篇 |
2018年 | 4篇 |
2017年 | 7篇 |
2016年 | 13篇 |
2015年 | 14篇 |
2014年 | 14篇 |
2013年 | 13篇 |
2012年 | 13篇 |
2011年 | 9篇 |
2010年 | 10篇 |
2009年 | 6篇 |
2008年 | 9篇 |
2007年 | 10篇 |
2006年 | 9篇 |
2005年 | 11篇 |
2004年 | 3篇 |
2003年 | 8篇 |
2002年 | 3篇 |
2001年 | 9篇 |
2000年 | 7篇 |
1999年 | 5篇 |
1998年 | 8篇 |
1997年 | 3篇 |
1996年 | 7篇 |
1995年 | 3篇 |
1994年 | 3篇 |
1992年 | 6篇 |
1991年 | 5篇 |
1990年 | 3篇 |
1989年 | 5篇 |
1988年 | 4篇 |
1987年 | 8篇 |
1986年 | 4篇 |
1984年 | 2篇 |
1983年 | 1篇 |
1982年 | 4篇 |
1981年 | 2篇 |
1980年 | 4篇 |
1978年 | 4篇 |
1977年 | 3篇 |
1975年 | 1篇 |
1974年 | 2篇 |
1973年 | 3篇 |
1972年 | 3篇 |
1969年 | 1篇 |
1968年 | 1篇 |
1967年 | 2篇 |
1965年 | 1篇 |
1934年 | 1篇 |
排序方式: 共有277条查询结果,搜索用时 31 毫秒
21.
22.
23.
Rioux F St-Pierre M Harvey N Moisan S Burhop KE Drapeau G 《Canadian journal of physiology and pharmacology》1998,76(10-11):983-988
Impaired nitric oxide (NO) activity is associated with an increase in blood pressure in rats. Voltage-regulated calcium channels are believed to participate in this hemodynamic event. To further test this hypothesis, we examined the effect of nimodipine and verapamil (calcium antagonists) on the pressor activity of diaspirin-crosslinked hemoglobin (DCLHb), a well-known NO scavenger, in anesthetized rats. Nimodipine, the most potent of the two calcium antagonists used, was also tested against phenylephrine (alpha1-adrenoceptor agonist). The pressor effect of DCLHb was reduced markedly by nimodipine and verapamil, whereas that elicited by phenylephrine, particularly the tonic phase of its pressor response, was resistant to blockade by nimodipine. The bradycardia and tachycardia associated with the pressor effects of DCLHb and phenylephrine, respectively, were not affected by nimodipine. The pressor effect elicited by DCLHb and its alteration by nimodipine were also examined in rats pretreated with 100% O2. This treatment was found to potentiate the pressor effect of DCLHb. However, this synergism did not impair the inhibitory action of nimodipine towards the pressor activity of DCLHb. Altogether these results suggest that the pressor activity of DCLHb in our animal model might involve the participation of voltage-regulated calcium channels. 相似文献
24.
25.
26.
Marijn Rutgers Daniël BF Saris Wouter JA Dhert Laura B Creemers 《Arthritis research & therapy》2010,12(3):R114
Introduction
Intraarticular administration of autologous conditioned serum (ACS) recently demonstrated some clinical effectiveness in treatment of osteoarthritis (OA). The current study aims to evaluate the in vitro effects of ACS on cartilage proteoglycan (PG) metabolism, its composition and the effects on synovial fluid (SF) cytokine levels following intraarticular ACS administration. 相似文献27.
28.
R Gon?alves LA Szmuchrowski LS Prado BP Couto JCQ Machado VO Damasceno JA Lamounier 《Biology of sport / Institute of Sport》2015,32(3):255-260
The aim of this study was to assess the suitability of body mass index, waist circumference, waist-to-height ratio and aerobic fitness as predictors of cardiovascular risk factor clustering in children. A cross-sectional study was conducted with 290 school boys and girls from 6 to 10 years old, randomly selected. Blood was collected after a 12-hour fasting period. Blood pressure, waist circumference (WC), height and weight were evaluated according to international standards. Aerobic fitness (AF) was assessed by the 20-metre shuttle-run test. Clustering was considered when three of these factors were present: high systolic or diastolic blood pressure, high low-density lipoprotein (LDL) cholesterol, high triglycerides, high plasma glucose, high insulin concentrations and low high-density lipoprotein (HDL) cholesterol. A ROC curve identified the cut-off points of body mass index (BMI), WC, waist-to-height ratio (WHtR) and AF as predictors of risk factor clustering. BMI, WC and WHR resulted in significant areas under the ROC curves, which was not observed for AF. The anthropometric variables were good predictors of cardiovascular risk factor clustering in both sexes, whereas aerobic fitness should not be used to identify cardiovascular risk factor clustering in these children. 相似文献
29.
David Gendron Anne-Marie Lemay Claudine Tremblay Laetitia JA Lai Anick Langlois émilie Bernatchez Nicolas Flamand Marie-Renée Blanchet Anthony S Don Ynuk Bossé élyse Bissonnette David Marsolais 《Respiratory research》2015,16(1)