نتایج جستجو برای: c hπ interaction
تعداد نتایج: 1563823 فیلتر نتایج به سال:
this work is presented in five parts. in the first part preparation of the starting complex [pt(c^n)cl(dmso)], 1, in which c^n = n(1),c(2?)-chelated, deprotonated 2-phenylpyridine, and dmso = dimethylsulfoxide, and its reaction with 1 equiv of the biphosphine ligands bis(diphenylphosphino)amine, dppa, or bis(diphenylphosphino)methane, dppm, to give the complex [pt(c^n)cl(dppa)], 2, or [pt(c^n)c...
and t6 are the isospin raising and lowering single-particle operators. Two main proposals were made to explain this puzzling quenching of the GT strength; ~1! the missing strength is removed to the very high excitation energy of about 300 MeV above the ground state due to the process in which a nucleon is transformed into a D33 resonance, or more precisely the GT strength is removed due to the ...
Spectrophotometric studies of various mixtures of reduced and oxidized forms of myoglobin and cytochrome c revealed that oxymyoglobin is capable of reducing ferricytochrome c at a molar ratio of 1. Other combinations, i.e. oxymyoglobin and ferrocytochrome c; metmyoglobin and ferricytochrome c; or metmyoglobin and ferrocytochrome c showed no spectral change during the time course studied. The pH...
Food iron is absorbed by the intestinal mucosa from two separate pools of heme and nonheme iron. Heme iron, derived from hemoglobin and myoglobin, is well absorbed and relatively little affected by other foods eaten in the same meal. On the other hand, the absorption of nonheme iron, the major dietary pool, is greatly influenced by meal composition. Ascorbic acid is a powerful enhancer of nonhe...
Spectrophotometric studies of various mixtures of reduced and oxidized forms of myoglobin and cytochrome c revealed that oxymyoglobin is capable of reducing ferricytochrome c at a molar ratio of 1. Other combinations, i.e. oxymyoglobin and ferrocytochrome c; metmyoglobin and ferricytochrome c; or metmyoglobin and ferrocytochrome c showed no spectral change during the time course studied. The pH...
the interaction between dmso and alkaline earth perchlorates in anhydrous acetonitrile was investigated by ft-ir spectroscopy. a quantitative study was performed to determine the average number of bonded dmso molecules using v (so) and v (c-s) vibrations. changes in coordination numbers were observed both with increasing atomic numbers and the solvent composition. none of the investigated syste...
in recent years many researchers have been focused on interaction of small molecules with dna. dna is generally the primary intracellular of anticancer drugs, so the interaction between small molecules and dna can cause dna damage in cancer cells, blocking the division of cancer cells and resulting in cell death. the flavonoids are a large group of polyphenolic natural products that are widely ...
In this paper, we have investigated the kaon-deuteron interaction at an incident momentum of 1 GeV/c using the relativistic and non-relativistic Faddeev method for different phenomenological and chiral potentials. By calculating the π∑ invariant mass spectra on different particle channels, we have shown that the trace of Λ(1405) resonance is visible in such spectra. In the present work, the st...
Performance, genericity and flexibility are three valuable qualities for scientific environments that tend to be antagonistic. C++ provides excellent support for both performances and genericity thanks to its support for (class and function) templates. However, a C++ templated library can hardly be qualified as flexible: data of unexpected types cannot enter the system, which hinders user inter...
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