نتایج جستجو برای: organo sulfur compounds

تعداد نتایج: 256276  

2004
Satish C. B. Myneni

When we think of chlorine, we often relate it to the salt used in food preparation, chloride in the oceans, chlorine gas from swimming pools, and gaseous chlorofluorocarbons that have close links to the depletion of stratospheric ozone. We rarely think of thousands of chlorinated hydrocarbons that exist in the natural systems, several of which are highly toxic to humans (1). The C-Cl bond, comm...

Journal: :Journal of Synthetic Organic Chemistry, Japan 1959

Journal: :Environmental science & technology 2003
Yuji Arai A Lanzirotti S Sutton J A Davis D L Sparks

Recent U.S. government action to lower the maximum concentration levels (MCL) of total arsenic (As) (10 ppb) in drinking water has raised serious concerns about the agricultural use of As-containing biosolids such as poultry litter (PL). In this study, solid-state chemical speciation, desorbability, and total levels of As in PL and long-term amended soils were investigated using novel synchrotr...

2015
Wei-Qiang Liao Yi Zhang Chun-Li Hu Jiang-Gao Mao Heng-Yun Ye Peng-Fei Li Songping D. Huang Ren-Gen Xiong

Inorganic semiconductor ferroelectrics such as BiFeO3 have shown great potential in photovoltaic and other applications. Currently, semiconducting properties and the corresponding application in optoelectronic devices of hybrid organo-plumbate or stannate are a hot topic of academic research; more and more of such hybrids have been synthesized. Structurally, these hybrids are suitable for explo...

Journal: :The Science of Nature 1960

Journal: :Science 2004
Hyung J Kim David W Graham Alan A DiSpirito Michail A Alterman Nadezhda Galeva Cynthia K Larive Dan Asunskis Peter M A Sherwood

Siderophores are extracellular iron-binding compounds that mediate iron transport into many cells. We present evidence of analogous molecules for copper transport from methane-oxidizing bacteria, represented here by a small fluorescent chromopeptide (C45N12O14H62Cu, 1216 daltons) produced by Methylosinus trichosporium OB3b. The crystal structure of this compound, methanobactin, was resolved to ...

Journal: :Journal of the American Chemical Society 2008
Thomas H Graham Casey M Jones Nathan T Jui David W C MacMillan

A critical objective for the continued advancement of the field of asymmetric catalysis is the design and implementation of novel activation modes that allow the invention of unprecedented transformations. Recently, our laboratory introduced a new mode of organocatalytic activation, termed (singly occupied molecular orbital) SOMO catalysis, that is founded upon the transient production of a 3π-...

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