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求paper2，再谢！http://onlinelibrary.wiley.com/doi/10.1002/masy.19910420119/pdf

求paper2，再谢！http://onlinelibrary.wiley.com/doi/10.1002/masy.19910420119/pdf# Chemistry - 化学

c*a2017-01-03 08:01

1 楼

发信人: myelsa (我的理解不一定对), 信区: Belief
标题: 摩門經.摩爾門書（1-3)因為我知道主的慈悲和恆久忍耐
发信站: BBS 未名空间站 (Fri Jun 11 11:24:05 2010, 美东)
第一章
阿摩龍指示摩爾門神聖紀錄的事──尼腓人與拉曼人之間爆發戰爭──三位尼腓人被帶
走──邪惡、不信、邪術、巫術猖獗。約主後三二一年至三二六年。
1 我，摩爾門，將我看到和聽到的事作成紀錄，稱為摩爾門書。
2 大約在阿摩龍為主藏起紀錄的時期，他到我這裡來（當時我大約十歲，按照我同胞
的學習方式開始受了一些教育）；阿摩龍對我說：我看你是個認真的孩子，也敏於觀察
；
3 因此，等你二十四歲左右的時候，我希望你要記得你觀察到的這人民的事情；到了
那個年紀，你就去安德地一個叫歇姆的山丘上；我在那裡為主存放了與這人民有關的所
有神聖鐫文。
4 看啊，你要取出尼腓片帶著，其餘的則留在原處；你要在尼腓片上刻寫你觀察到的
這人民的所有事情。
5 我，摩爾門，是尼腓的後代（我父親的名字也叫摩爾門），我記得阿摩龍命令我的
事。
6 事情是這樣的，我十一歲

d*y2017-01-03 08:01

2 楼

http://onlinelibrary.wiley.com/doi/10.1002/masy.19910420119/pdf
Article
Inhibiting or cocatalytic effect of water and other additives on cationic
polymerization of cyclodimethylsiloxanes
Authors
P. Sigwalt,
C. Gobin,
P. Nicol,
M. Moreau,
M. Masure
First published: March 1991Full publication history
DOI: 10.1002/masy.19910420119View/save citation
Cited by: 14 articlesCitation tools
Funding Information
Abstract
Cyclodimethylsiloxanes such as hexamethylcyclotrisiloxane (D3) and
octamethyl-cyclotetrasiloxane (D4) have quite different reactivities and
generally do not give the same types of cyclic products. An examination of
analogies and differences between these two monomers is made in the case of
initiation by trifluoromethane sulfonic acid, for both the formation of
water during the reaction and the effect of water and other additives. The
differences in the formation of water are much less than was expected and
perhaps not really significant. A second analogy is that for both monomers,
the retarding or inhibiting effect of water is much stronger when it is
premixed with the acid rather than mixed in situ, this being attributed in
this last case to a possible competition between monomer and water for the
first reaction with acid. From the variation of the rates when the mole
ratio [H2O]/[Acid] increases, it is concluded that for the initiation
reaction water is a retarder or inhibitor for both monomers while for
propagation it is an inhibitor for D4 but a very effective cocatalyst for D3
. After a comparison of the effects of added water, silanol and triflic
esters on propagation reaction and cyclics formation for these two monomers,
and a discussion of the possible active centres, it is concluded that the
mechanism of propagation should be different for D3.