30 Result(s)
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Article
M. V. Fedotova
English
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Article
Investigation of the structure of concentrated aqueous solution of LiCl at low temperatures by the method of integral equations
Peculiarities of the formation of the structure of aqueous LiCl solution (at a salt: water molar ratio of 1:5.3) in the temperature range 298-138 K were studied by the method of integral equations. Analysis of...
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Structural parameters of concentrated aqueous solutions of LiCl under extreme conditions, as calculated by the method of integral equations. Effect of temperature
Peculiarities of structure formation of aqueous LiCl solutions at different salt : water molar ratios (LiCl : n H2O, n = 3.15, 8.05, 14.90) under conditions of isobaric heating (p = 100 bar, T = 298, 323—523 K, Δ
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Article
Relationship between the Structural State of Water and the Character of Ion Hydration in Concentrated 1:1 Aqueous Solutions of Electrolytes in Extreme Conditions
It is suggested that the association parameter A be used as an indicator demonstrating the effect of extremal conditions on the structure of water in the series of solutions
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Article
Structural Properties of Concentrated Aqueous Solutions of Lithium Chloride Near the Critical Point of Water as Calculated by the Integral Equation Method
The integral equation method was used to study structure formation in concentrated aqueous solutions of lithium chloride in the near-critical region (P = 20 MPa, T = 298-623 K). It is found that when the LiCl–H2O...
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Article
Structural Parameters of Concentrated Aqueous Solutions of Lithium Chloride under Extreme Conditions, Determined by the Method of Integral Equations: Effect of Isothermal Compression
The structure formation in aqueous solutions of LiCl, LiCl : nH2O (n = 3.15, 8.05, 14.90), under conditions of isothermal compression (T 523 K, P 100-1500 bar) was studied by the method of integral equations. Iso...
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Structure formation features of water and concentrated aqueous lithium halide solutions at low temperatures from the data of integral equation method
The structure of water and the influence of halide ions on the structure formation of concentrated LiX : H2O (1 : 5; X = Cl, Br, I) solutions at low temperatures were studied by the method of integral equations. ...
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Article
Features of Cation Hydration in Concentrated Aqueous Solutions of MeCl (Me = Li, Na, K, Rb): A Study by the Method of Integral Equations
The structural features of concentrated aqueous solutions of MeCl (Me = Li, Na, K, Rb; molar ratio [salt] : [water] = 1 : 15) at 293 K and 0.1 MPa were studied by the method of integral equations. The calculat...
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Article
Structural Characteristics of Concentrated Aqueous Solutions of Lithium Bromide under Extreme Conditions, Evaluated by the Method of Integral Equations
The influence of temperature (T 298-623 K) at constant pressure (P 200 bar) on the structure of aqueous solutions LiBr:nH2O (n = 15, 8, 4) was studied using the method of integral equations. In the less concentra...
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Article
Specific Structural Features of Concentrated Aqueous Solutions of Potassium Iodide in a Wide Temperature Range
The structural characteristics of concentrated aqueous solutions of KI under the conditions of isobaric heating (P 20 MPa, T 298–623 K) were studied by the method of integral equations. As the temperature is incr...
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Article
Inflammatory degeneration of joint tissue in adjuvant arthritis after intraarticular treatment with the mixture of silver drug and nicotinic acid
Combination intraarticular administration of Poviargol (0.5 mg/kg) and nicotinic acid (1.0 mg/kg) reduced symptoms of local and general inflammation in rats with adjuvant arthritis. We revealed a decrease in m...
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Article
Special features of ion association in concentrated LiCl aqueous solutions at various temperature
The influence of high (up to 623 K) and low (up to 138 K) temperatures on ion association in 18.5–3.7 molar aqueous LiCl solutions was studied. It was found that the ion association in concentrated and highly ...
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Article
Special features of structure formation of sodium chloride concentrated aqueous solution on its passing to supercritical state
Structural properties of aqueous 4.37 M solution of NaCl under sub-and supercritical conditions (p 25 MPa, T 450–750 K) were studied by the method of integral equations in the atom-atom approximation. The passing...
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Article
Dependence of protective functions of Escherichia coli polyamines on strength of stress caused by superoxide radicals
Mechanisms of antioxidant effect of polyamines were studied in dependence on the strength of superoxide stress. Under conditions of weak stress, polyamines from Escherichia coli cultures were shown to function ma...
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Article
Influence of isobaric heating of hydrogen bonding in precritical water
IR spectroscopy and statistical mechanic calculations were used to study the influence of isobaric heating (p 250 bar, T 493–633 K) on H-bond distribution in precritical water. As the temperature rises, the inter...
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Article
The influence of pressure on the structure of aqueous solutions of NaCl over the pressure range 0.1–1000 MPa according to the integral equation method
The influence of pressure (0.1–1000 MPa) on the structure of aqueous solutions of NaCl (1.91–3.08 m) at constant temperatures of 298 and 623 K was studied by the integral equation method. The most substantial ...
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Article
Effect of electrolyte additions and temperature on the structure self-organization of the water subsystem in water-supercritical Co2-NaCl ternary mixtures
The effect of electrolyte additions (6, 15, 23 wt % NaCl) and temperature (T 313–633 K, p 250 bar) on the structural state of the water subsystem in the water-rich phase of the water-supercritical CO2-NaCl ternar...
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Article
Structural parameters of aqueous NaCl in a high-density supercritical state
The paper presents the results of our theoretical study of the structural properties of a solution of NaCl in water, NaCl: 12.7H2O, in a high-density supercritical state (ρ = 0.867 g/cm3). These results are compa...
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Article
Structural parameters of RbBr aqueous solution under nearcritical and supercritical conditions with close densities (∼0.65 g/cm3)
The results of a theoretical investigation for structural properties of diluted RbBr aqueous solution under nearcritical (T = 638 K, p = 38.9 MPa, ρ = 0.65 g/cm3) and supercritical conditions (T = 697 K, p = 63.3...
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Article
Structural parameters of aqueous solutions of potassium fluoride under hydrothermal conditions
The structural parameters of aqueous KF solutions with concentrations of 10 and 20 wt % in the temperature range 473–623 K (p 18.7–24.6 MPa), obtained by the method of integral equations, are presented and compar...
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Article
Features of ion hydration and ion association in sub- and supercritical aqueous solutions of rubidium bromide
Results of investigations by the integral equation method in the XRISM approximation of features of structure formation in sub- and supercritical 0.5 M aqueous solution of RbBr. As the system passes from the s...
