全文获取类型
收费全文 | 167篇 |
免费 | 3篇 |
专业分类
4篇 | |
综合类 | 14篇 |
农作物 | 16篇 |
水产渔业 | 3篇 |
畜牧兽医 | 132篇 |
植物保护 | 1篇 |
出版年
2019年 | 1篇 |
2017年 | 1篇 |
2016年 | 1篇 |
2015年 | 1篇 |
2014年 | 1篇 |
2013年 | 5篇 |
2011年 | 1篇 |
2010年 | 4篇 |
2009年 | 5篇 |
2008年 | 2篇 |
2006年 | 2篇 |
2004年 | 4篇 |
2003年 | 4篇 |
2002年 | 3篇 |
2001年 | 2篇 |
2000年 | 2篇 |
1999年 | 7篇 |
1998年 | 17篇 |
1997年 | 15篇 |
1996年 | 12篇 |
1995年 | 9篇 |
1994年 | 9篇 |
1993年 | 9篇 |
1992年 | 4篇 |
1991年 | 7篇 |
1990年 | 4篇 |
1989年 | 8篇 |
1988年 | 2篇 |
1987年 | 1篇 |
1986年 | 2篇 |
1985年 | 2篇 |
1984年 | 1篇 |
1983年 | 2篇 |
1982年 | 1篇 |
1981年 | 5篇 |
1980年 | 1篇 |
1979年 | 6篇 |
1976年 | 2篇 |
1970年 | 1篇 |
1967年 | 1篇 |
1964年 | 1篇 |
1956年 | 1篇 |
1955年 | 1篇 |
排序方式: 共有170条查询结果,搜索用时 15 毫秒
91.
Cardiovascular Effects of 1.0, 1.5, and 2.0 Minimum Alveolar Concentrations of Isoflurane in Experimentally Induced Hypothyroidism in Dogs 总被引:1,自引:0,他引:1
R. M. MCMURPHY DVM Diplomate ACVA D. S. HODGSON DVM Diplomate ACVA D. S. BRUYETTE DVM Diplomate ACVIM R. B. FINGLAND DVM MS Diplomate ACVS 《Veterinary surgery : VS》1996,25(2):171-178
This study was performed to determine the cardiovascular responses to isoflurane in euthyroid and hypothyroid dogs. Four healthy mixed-breed dogs were studied prior to thyroidectomy (PRE), 6 months after thyroidectomy (HYP), and after 2 months of oral supplementation with 1-thyroxine (SUP). Heart rate (HR), cardiac output (), stroke volume (SV), systolic, diastolic, mean arterial blood pressure (SAP, DAP, MAP), and total peripheral resistance (TPR) were determined in awake dogs and in the same dogs when end-tidal isoflurane concentrations were 1.28%, 1.92%, and 2.56%. Ventilation was controlled in anesthetized dogs and Paco2 maintained between 38 to 42 mm Hg. Isoflurane caused significant ( P <.05) dose-dependent reduction in , SV, SAP, DAP, and MAP in the PRE, HYP, and SUP dogs. Cardiac output was lower in the HYP dogs than in the PRE or SUP dogs during awake measurement. TPR was increased in the awake HYP dogs compared with the PRE or SUP dogs. During anesthesia, HYP dogs tended to have lower , SV, SAP, and MAP than the PRE or SUP groups, but the only significant reduction was SAP during 1.5 MAC. The cardiovascular responses to isoflurane in hypothyroid dogs are similar to euthyroid animals with a dose-dependent depression in , SV, and arterial pressure. 相似文献
92.
RF Cooper JB Fanselow JKR Weber DR Merkley DB Poker 《Science (New York, N.Y.)》1996,274(5290):1173-1176
Rutherford backscattering spectroscopy (RBS) and microscopy demonstrate that the approximately 1400°C oxidation of levitated droplets of a natural Fe2+-bearing aluminosilicate (basalt) melt occurs by chemical diffusion of Fe2+ and Ca2+ to the free surface of the droplet; internal oxidation of the melt results from the required counterflux of electron holes. Diffusion of an oxygen species is not required. Oxidation causes the droplets to go subsolidus; magnetite (Fe3O4) forms at the oxidation-solidification front with a morphology suggestive of a Liesegang-band nucleation process. 相似文献
93.
94.
95.
96.
97.
98.
DR Fry 《Australian veterinary journal》2004,82(6):350-350
99.
100.
CORYNEBACTERIUM EQUI INFECTION IN AN ADULT HORSE 总被引:2,自引:0,他引:2