A new biphenyl glycoside along with six known compounds were isolated from the water soluble fraction of the fresh leaves of Eriobotrya japonica. Its structure
目前眼外伤是仅次于白内障的主要致盲原因之一。随着白内障摘出人工晶状体植入与玻璃体切除术的发展,眼外伤的治疗在不断得到完善。本文对我院自1990年2月至1995年4月间56例外
11月13日 晴 读三国,领略刘备、关羽和张飞桃园三结义的豪情宏志,惊讶曹操“宁教我负天下人,休教天下人负我”的无情无义,感受性情各异的三国人物在战场上的辉煌和颓败……三国人物之中,最令人喜爱的可能就是诸葛亮了。他的神機妙算和博学多才令人欣赏,他的忠心耿耿和严于律己令人赞叹。 论忠。对于诸葛亮,我们最熟悉的情节莫过于刘备为之三顾茅庐,而使得诸葛亮“由是感激,遂许先帝以驱驰”的故事。刘备曾去隆中
我有一个十分要好的朋友,她的皮肤白白的,头发很顺,嘴巴也不大,只可惜她带了副眼镜.rn她不但是我的朋友,还是我的同学.她的优点很多:聪明、说了就做、敢做敢当……而且对自己
Silica, alumina, and activated carbon supported iron-cobalt catalysts were prepared by incipient wetness impregnation. These catalysts have been characterized b
The asymmetric oxidation of sulfides catalyzed by WO3 and 30% H2O2 in the presence of salan as chiral ligands under heterogeneous conditions is described. The r
At present,most of the students have difficulty in English reading,such as reading slowly,low comprehension and so on.In order to improve their reading speed an
向科学技术要安全向安会生产要效益关海鸥(哈尔滨市建设安全站)近日,哈尔滨市建筑业在黑龙江省第一建筑公司施工的哈尔滨电机厂科技楼,召开了“向科学技术要安全,向安全生产要效益
轻微的泪小管阻塞采用泪道插管术多能治愈,但阻塞较重者难以奏效。笔者采用切除阻塞段泪小管后将两断端重新吻合的方法治疗下泪小管阻塞33例35眼,效果理想,报告如下。一、临床资料1.一
The hydrogen bonding interactions between N-methylformamide and primary,secondary,and tertiary alcohols have been studied using the FTIR spectroscopic method.Th