Zobrazeno 1 - 10
of 110
pro vyhledávání: '"Valentin G. Badelin"'
Publikováno v:
Russian Journal of Physical Chemistry A. 94:731-737
The behavior of L-histidine (His) in an aqueous buffer solution (pH 7.4) is studied via densimetry and differential scanning calorimetry. The densities and specific heat capacities of solutions of the amino acid are determined in the 288.15–313.15
Publikováno v:
Russian Journal of General Chemistry. 89:2235-2238
The calorimetric method was employed to measure the heat effects of the interaction of isonicotinic and picolinic acids with HNO3in aqueous solutions over different pH ranges at 298.15 K and ionic strengths of 0.5, 1.0, and 1.5 against potassium nitr
Publikováno v:
Journal of Thermal Analysis and Calorimetry. 139:3683-3689
The enthalpies of l-carnosine interaction with solutions of hydrochloric acid have been measured by calorimetric method in the presence of NaCl at 298.15 K and ionic strength as high as 0.25, 0.50 and 0.75 mol dm−3. The enthalpies of acid dissociat
Publikováno v:
Russian Journal of Physical Chemistry A. 93:1729-1732
The enthalpies of interaction between L-asparagine with HNO3 and НCl in aqueous solutions with different pH values at a temperature of 298.15 K and ionic strengths of 0.5–1.5 are measured calorimetrically using different background electrolytes. T
Publikováno v:
Journal of Solution Chemistry. 48:1309-1317
The dissolution enthalpies ( $$\Delta_{\text{sol}} H_{\text{m}}$$ ) of dl-α-alanyl-dl-α-valine (AlaVal) and dl-α-alanyl-dl-α-norleucine (AlaNln) in aqueous solutions of dodecyl sulfate (SDS) at SDS concentration of mSDS = 0.05 mol·kg−1 and pep
Autor:
Elena Yu. Tyunina, Valeriya V. Tyunina, Valentin G. Badelin, Vladimir V. Rybkin, Alexandr V. Krasnov
Publikováno v:
The Journal of Chemical Thermodynamics. 135:287-295
We report sublimation enthalpies of sulfur-containing amino acids, l - and dl -methionine, investigated by Knudsen’s effusion method with mass spectrometric vapor composition control. The fragmentation of molecules under electron ionization (EI) wa
Enthalpy Characteristics of N-Methylglycine Dissolution in Some Aqueous–Organic Mixtures at 298.15 K
Autor:
Valentin G. Badelin, V. I. Smirnov
Publikováno v:
Russian Journal of Physical Chemistry A. 93:1465-1470
The enthalpies of N-methylglycine dissolution in aqueous solutions of acetonitrile (AN), 1,4-dioxane (DO), acetone (AC), and dimethylsulfoxide (DMSO) at a mole fraction of an organic solvent x2 of 0‒0.25 and T = 298.15 K. The results of the experim
Publikováno v:
Russian Journal of Physical Chemistry A. 93:674-681
Heat capacities of aqueous solutions of anionic surfactant sodium decyl sulfate in the 0.28–0.42 mol kg−1 range of molar concentrations and the 278–363 K range of temperatures are studied via precision adiabatic differential scanning microcalor
Publikováno v:
The Journal of Chemical Thermodynamics. 131:40-48
The heterocyclic ligand–amino acid complexes used as models of drug binding with plasma proteins have been studied. In this paper, we report the new data on densities and heat capacities of uracil and nicotinic acid in aqueous buffer solutions (pH
Publikováno v:
Journal of Molecular Liquids. 278:505-511
Interactions between the aromatic amino acid ( l -histidine) and heterocyclic ligands (uracil, nicotinic acid) in pure water (pH 5.4) and in aqueous buffer solutions (pH 7.4) were studied by calorimetry and UV–vis spectroscopy. Stability constants