نتایج جستجو برای: hexamethylenetetramine bromine
تعداد نتایج: 2569 فیلتر نتایج به سال:
Based on first-principles calculations, we study the structural, electronic, and magnetic properties of two-dimensional silicene saturated with hydrogen and bromine atoms. It is found that the fully saturated silicene exhibits nonmagnetic semiconducting behavior, while half-saturation on only one side with hydrogen or bromine results in the localized and unpaired electrons of the unsaturated Si...
1 6. The interpretation of the growth of these plants by Mendelian factors is further strongly supported by the distribution of the standard deviations of the plants with different relative sizes. Thus it has been shown that the extreme plants which would be more nearly homozygous and for this reason less variable are, as a matter of fact, some 50 per cent less variable than the plants in the m...
An experimental route to identify and separate geometric isomers by means of coincident Coulomb explosion imaging is presented, allowing isomer-resolved photoionization studies on isomerically mixed samples. We demonstrate the technique on cis/trans 1,2-dibromoethene (C2H2Br2). The momentum correlation between the bromine ions in a three-body fragmentation process induced by bromine 3d inner-sh...
A procedure is presented for measuring bromide in serum filtrates, after protein has been precipitated with a HCI-tungstate reagent. The bromide in the filtrate isoxidized to bromate with hypochlorite. The resulting bromate reacts with added bromide to release bromine. Bromine reacts with rosaniline to form bromorosaniline, which is measured colorimetrically. The method is specific, sensitive, ...
In a combined radioactive isotope study, Nae, Ke, bromine space and total body water were measured in a group of fourteen hypothyroid subjects. These were compared with a 'control' group. Total body water and Nae were found to be increased in the hypothyroid subjects. In seven subjects, the measurements were repeated after treatment with thyroid hormone. Most of the subjects lost weight and sho...
We found that elemental iodine and bromine are converted to trihalide nucleophiles (triiodine and tribromide anion, respectively) in the presence of catalytic amounts of meso-tetraphenylporphyrins (H2TPP). Therefore a highly regioselective method for the synthesis of beta-haloalcohols through direct ring opening of epoxides with elemental iodine and bromine in the presence of H2TPPs as new cata...
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