Tit le Role of counter-ions in background electrolyte for the analysis of cat iongenic weak electrolytes and amino acids in neutral aqueous solut ions by capillary electrophoresis with electrokinet ic inject ion Author(s) Hattori, Takanari / Fukushi, Keiichi / Hirokawa, Takeshi Citat ion Journal of Chromatography A,1326:130-133 Issue date 2014-01-24 Resource Type Journal Art icle / 学術雑誌論文 Resou...

A estabilidade relativa do dicátion 1,3-desidro-5,7-adamantanediila é atribuída a sua aromaticidade tridimensional. Contudo, sua natureza eletrônica não é bem conhecida. A fim de entendê-la melhor, os die monocátions do adamantanodiil e alguns de seus análogos foram estudados utilizando a teoria de átomos e moléculas (AIM). Eles foram comparados com análogos de adamantano não-aromáticos. Os res...

Methyl parathion hydrolase (MPH, E.C.3.1.8.1), isolated from the soil-dwelling bacterium Pseudomonas sp. WBC-3, is a Zn(II)-containing enzyme that catalyzes the degradation of the organophosphate pesticide methyl parathion. We have determined the structure of MPH from Pseudomonas sp. WBC-3 to 2.4 angstroms resolution. The enzyme is dimeric and each subunit contains a mixed hybrid binuclear zinc...

Protonated aromatic aldehydes and methyl ketones 1a-10a, carrying initially the proton at the carbonyl group, are prepared by electron impact-induced loss of a methyl radical from 1-arylethanols and 2-aryl-2-propanols, respectively. The aryl moiety of the ions corresponds to a benzene group, a naphthalene group, a phenanthrene group, a biphenyl group, and a terphenyl group. respectively, each s...

Carnosine is a dipeptide compound that is found in many dietary supplements and food products. Carnosine has many functions in the body, such as alleviating oxidative stress on tissues by acting as an antioxidant compound. Carnosine, therefore, has important anti-aging properties. Carnosine is also capable of forming protective sequestration structures around heavy metal ions; this process of c...

The role of counter ions and ion dissociation in establishing the equilibrium swelling of balanced and unbalanced polyampholytic hydrogels has been investigated experimentally and theoretically. The swelling dependence on both the net charge offset and the external bath salt concentration has been examined using an acrylamide based polyampholytic hydrogels. By careful consideration of the swell...

roethylene and generally less than 15 mol % of perfluorovinyl ether units that are terminated with a sulfonic acid exchange site. The most widely studied PFSI and the focus of this study, Nafion, is a product of the E. I. DuPont Chemical Company (Fig. 1). The polar perfluoroether side-chains containing the ionic sulfonate groups aggregate, thus leading to a nanophase-separated morphology where ...