排序方式： 共有2条查询结果，搜索用时 15 毫秒
1
1.
The title compound 6?-chloro-4?-methylene-3 H-spiro [isoben zofura-1,3?-isochroman], C_(17)H_(13)ClO_2, was prepared and characterized by IR, NMR, HRMS and single-crystal X-ray diffraction. This compound has a bisbenzannulated [5,5]-spiroketals skeleton. It crystallizes in orthorhombic, space group P212121 with a = 13.383(3), b = 7.6120(17), c = 13.793(3) ?, Z = 4, Dc= 1.275 g/cm~3, μ = 0.28 mm~(–1), F(000) = 592, wR = 0.1443 and R = 0.0557. The preliminary biological test showed that the title compound has good anti-bacterial activities in vitro. 相似文献
2.
利用不同剂量的碳离子束辐照处理牛至精油微胶囊，研究对其缓释特性及抗鸡球虫病活性的影响。研究结果表明，通过碳离子束处理的牛至精油微胶囊，其主要活性成分百里香酚和香芹酚含量未发生变化，辐照处理后反应收率及产品的生物活性均提高，其中400 Gy剂量处理的牛至精油微囊的收率和生物活性均最高，收率达68.44%。通过对感染柔嫩艾美耳球虫的小鸡喂食后，其盲肠和十二指肠肿胀明显减轻，血液性内容物明显减少，血便指数在感染的第七天已降为0，抗球虫指数（ACI）达到179.39。The purpose of this study is using different doses of carbon ion beam irradiation on oregano essential oil microcapsules, to investigate function of control release and anticoccidial activity in chickens. The results showed that the content of main components in oregano essential oil microcapsules after carbon ion beam irradiation, thymol and carvacrol, have little change. Moreover, it can obtain more object products and better bioactivity after the irradiation treatment. Among these different doses of irradiation, our findings showed that Microcapsule groups with 400 Gy dose irradiation showed the highest yield (68.44%) and the best anticoccidial activity. After feeding chickens infected with Eimeria tenella, the swelling of caecum and duodenum were significantly mitigated and blood contents were also significantly reduced. The bloody stool index of chickens was as low as zero on the seventh day of infection, and the anticoccidial index (ACI) is 179.39. 相似文献
1