首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 46 毫秒
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
~~Journal of Zhejiang University SCIENCE Vol.6A,Nos.1-12 2005 Contents~~  相似文献   

14.
15.
16.
[I].Synthesisandpalladium -catalyzedcross -couplingreac tionoftris[4 - (trimethylsilyl)furan - 3-yl]boroxineandtris[4 -(substituted)furan - 3-yl]boroxine .3,4 -Disubstitutedfuransareimportantbuildingblocksofhet erocycliccompounds,inacontinuationofthestudyonpossibleroutesto 3,4 -disubstitutedfuran ,Iwasinterestedinexploringtheroleofasilylgroupasapotentialdirectinggroupbecausesilylgroupsarewell-knownfortheir ( -donatingcharacter.Theirtendencytostabilizea ( -carbocationthroughtheso -called (p - (…  相似文献   

17.
18.
19.
20.

Pathologizing the Poor: A Framework for Understanding Ruby Payne's Work

The poor person does not exist as an inescapable fact of destiny. His or her existence is not politically neutral, and it is not ethically innocent. The poor are a by-product of the system in which we live and for which we are responsible.

—Gustavo Gutiérrez  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号