نتایج جستجو برای: tris diluter
تعداد نتایج: 11465 فیلتر نتایج به سال:
The 1 : 1 mixture of tris(trimethylsilyl)phosphine and tris(2,3,5,6-tetrafluorophenyl)borane behaves as frustrated Lewis pair (FLP) and shows H(2) and sequential two-step double CO(2) activation with subsequent Me(3)Si group transfer.
D(3h)-symmetrical tripodal tris(malonate) tethers have been used for the synthesis of [60]fullerene tris-adducts with an e,e,e addition pattern bearing topologically distinct polar and equatorial addend zones that can selectively be deprotected.
Easy-to-make tripodal tris-thiourea receptors based upon tris(2-aminoethyl)amine are capable of chloride/bicarbonate transport and as such represent a new class of bicarbonate transport agent.
Cultures of Escherichia coli growing exponentially in Trisacetate medium were subjected to nutritional shift-up and the pool size of guanosine 5’-diphosphate-3’-diphosphate (ppGpp) as well as the rates of protein synthesis and net RNA synthesis were determined. In the shift to a rich medium (glucose plus 19 amino acids plus hypoxanthine) the basal level of ppGpp falls immediately with a decay c...
Our laboratory has been examining the mechanisms whereby chemicals are mutagenic in short-term in-vitro assays yet are not carcinogenic in 2-year rodent bioassays. Previous studies indicated that mutagenic carcinogens increased the amount of cell turnover in the target organ, but that mutagenic noncarcinogens failed to do so. The present study compares the incidence of cell proliferation in spe...
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