نتایج جستجو برای: 1 2 10

تعداد نتایج: 4376156  

Journal: :Professions and Professionalism 2020

2010
Yan-Shu Liang Shuai Mu Ying Liu Deng-Ke Liu

The title compound, C(15)H(17)ClNO(2)S(+)·C(10)H(15)O(4)S(-)·C(3)H(6)O, was synthesized by N-alkyl-ation of α-amino-(2-chloro-phen-yl)acetate with 2-thienylethyl p-toluene-sulfonate, followed by reaction with (+)-camphor-10-sulfonic acid. In the crystal, the cations and anions are linked through N-H⋯O hydrogen bonds. The thio-phene ring of the cation was found to be disordered over two sites, w...

2008
Michael R. Douglas Shamit Kachru

We review recent work in which compactifications of string and M theory are constructed in which all scalar fields (moduli) are massive, and supersymmetry is broken with a small positive cosmological constant, features needed to reproduce real world physics. We explain how this work implies that there is a “landscape” of string/M theory vacua, perhaps containing many candidates for describing r...

Journal: :Acta Crystallographica Section E Structure Reports Online 2012

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