全文获取类型
| 收费全文 | 242篇 |
| 免费 | 34篇 |
专业分类
| 林业 | 6篇 |
| 农学 | 1篇 |
| 9篇 | |
| 综合类 | 10篇 |
| 农作物 | 6篇 |
| 水产渔业 | 11篇 |
| 畜牧兽医 | 226篇 |
| 园艺 | 2篇 |
| 植物保护 | 5篇 |
出版年
| 2023年 | 1篇 |
| 2020年 | 6篇 |
| 2019年 | 7篇 |
| 2018年 | 11篇 |
| 2017年 | 10篇 |
| 2016年 | 17篇 |
| 2015年 | 6篇 |
| 2014年 | 13篇 |
| 2013年 | 19篇 |
| 2012年 | 7篇 |
| 2011年 | 7篇 |
| 2010年 | 13篇 |
| 2009年 | 8篇 |
| 2008年 | 10篇 |
| 2007年 | 2篇 |
| 2006年 | 8篇 |
| 2005年 | 4篇 |
| 2004年 | 6篇 |
| 2003年 | 3篇 |
| 2002年 | 4篇 |
| 2001年 | 6篇 |
| 2000年 | 4篇 |
| 1999年 | 12篇 |
| 1998年 | 13篇 |
| 1997年 | 15篇 |
| 1996年 | 13篇 |
| 1995年 | 5篇 |
| 1994年 | 1篇 |
| 1993年 | 8篇 |
| 1992年 | 5篇 |
| 1991年 | 4篇 |
| 1990年 | 6篇 |
| 1989年 | 9篇 |
| 1988年 | 9篇 |
| 1984年 | 1篇 |
| 1980年 | 1篇 |
| 1979年 | 1篇 |
| 1974年 | 1篇 |
排序方式： 共有276条查询结果，搜索用时 15 毫秒
41.
ABSTRACTCase history: Medical records were reviewed of horses (n?=?7) undergoing surgery for fracture of one or more facial bones extending into the paranasal sinuses that was repaired primarily within 24 hours of the time of injury using a rotational periosteal flap, between April 2009 and May 2017. A kick from another horse was the cause of the injury of three horses, and one horse was injured when it collided with a tree. The cause of the injury of three horses was unknown.Clinical findings and treatment: Fractures were of the right maxillary bone in two horses, the left maxillary bone in two horses, the left frontal and left nasal bones in two horses, and the right frontal bones in one horse. The fracture of all but one horse was accompanied by an open wound. The fracture of all seven horses was reduced, stabilised, and covered with a rotational, periosteal flap. Surgery was carried out while standing in six horses, and while anesthetised in one horse. All horses had a deficit in the fractured facial bones after the fracture was reduced. Four horses had complications following surgery, but all horses were reported to have excellent cosmetic outcomes and had retuned to their previous level of activity, as reported by their owners.Clinical relevance: Covering a primarily repaired sinofacial fracture of a horse with a rotational periosteal flap resulted in good cosmetic outcomes, and may be especially beneficial if the fracture is accompanied by loss of bone. 相似文献
42.
43.
44.
45.
Encapsulated Stuphylococcus aureus from bovine mastitis 总被引：1，自引：0，他引：1
46.
47.
The effect on the early inflammatory response in the bovine mammary gland of a factor extracted from the cell wall of Staphylococcus aureus was studied. The insoluble factor was extracted from a 3h-culture, and was mixed with S. aureus from an overnight culture (OF) for experimental infection of a lactating quarter. Other quarters were infected with a 3h or an overnight culture (O). Five cows were used in the experiment. The O-quarters showed more severe clinical signs than seen in the 3h-and OF-quarters. Antitrypsin levels and NAGase concentrations were much reduced in the 3h-and OF-quarters. While the cell wall factor profoundly reduced the early inflammatory response, the effect on the final outcome of the infection was not determined. 相似文献
48.
49.
50.
Interspecific comparisons of animal population density to body size has been the subject of active research in the last decade, especially for terrestrial animals when considering particular taxa or taxonomic assemblages. Studies of rocky intertidal communities showed that animal population density scales with body size to the -0.77 power. This relation held within local communities representing a broad array of animal taxa and was not affected by a dramatic alteration in the network of between-species interactions, as revealed by two long-term human exclusion experiments. 相似文献