Russian Journal of Physical Chemistry B
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Effect of treatment in supercritical CO2 on the composition and structure of tealeaf and cellulose
Russian Journal of Physical Chemistry B - Tập 5 - Trang 1167-1172 - 2012
The influence of the pretreatment procedures with supercritical CO2 (SC-CO2) on
the elemental composition of tealeaf is studied. Fourier-transform infrared
absorption spectroscopy is used to examine the effect of SC-CO2 on the structure
of Chinese green tea and cellulose.
Synchronized Detection of X-Ray and Secondary Fluorescent Radiation of a Sample by Monophoton Sensors
Russian Journal of Physical Chemistry B - Tập 17 - Trang 796-800 - 2023
The structure of a device designed to detect X-ray and optical photons ascending
from a sample irradiated with synchrotron radiation or X-ray tube radiation and
the principles of its operation are described. The operation of the device
consists of determining the delay time of the specified optical photons relative
to the X-ray photons. Block diagrams of the main components of the device,
outlinin...
Effects of the Interaction of Microwave Radiation with the Atmosphere on the Passive Remote Sensing of the Earth’s Surface: Problems and Solutions (Review)
Russian Journal of Physical Chemistry B - Tập 12 - Trang 725-748 - 2018
The main problems in the remote passive location of positions on the Earth’s
surface are reviewed in detail. The first is related to the source of incoherent
microwave radiation represented by a layer of two-temperature nonequilibrium
ionospheric plasma at an altitude of ca. 80–110 km, which is located below a low
Earth-orbiting satellite and formed under the influence of solar activity. As a
resu...
Effectiveness of the third body in the direct recombination of ions
Russian Journal of Physical Chemistry B - Tập 8 - Trang 261-271 - 2014
The dynamics of the three-body recombination of the Cs+ and Br− ions with the
formation of products with the lowest internal energy in the presence of the
neutral atoms R = Hg, Xe, and Kr as third bodies is studied. The efficiency of
the process is characterized by the effectivity function, which represents the
dependence of the internal energy of the nascent molecule on the ion encounter
energy a...
Effect of the humidity on the uptake of NO3 on coatings composed of MgCl2 · 6H2O and MgBr2 · 6H2O and mixtures thereof with NaCl
Russian Journal of Physical Chemistry B - Tập 4 - Trang 399-407 - 2010
The reactive uptake of NO3 radicals on the surface of wetted individual X salts
and of wetted X-NaCl salts (X = MgCl2 · 6H2O and MgBr2 · 6H2O) at [H2O] = 2 ×
1012−2 × 1015 cm−3 and NO3 (4.8 × 1012 cm−3) was studied using a reactor with a
movable insert covered with a salt coating in combination with a mass
spectrometer for monitoring the initial reactant and products. The probabilities
of NO3 upta...
Nonlinear Kinetic Conservation Laws in Nonlinear Chemical Reactions
Russian Journal of Physical Chemistry B - Tập 15 - Trang 954-959 - 2022
A method is developed for establishing new nonlinear kinetic conservation laws
in chemical reactions proceeding in an open isothermal gradientless reactor
according to nonlinear mechanisms that include the stages of the transformation
of the initial substances, while disregarding the stages of their formation.
These laws are a kind of multiexperimental autonomous kinetic invariants that
can be obt...
Anomalous diffusion in the dynamics of complex processes
Russian Journal of Physical Chemistry B - - 2009
It is shown that complex signals represented in the form of time series of
measured dynamic variables can contain chaotic components whose time changes can
be described as anomalous diffusion processes. To determine the parameters of
such processes, procedures for the extraction of low-frequency and
highest-frequency flicker-noise components, which are flicker-noise spectroscopy
characteristics, s...
The chiral effect of adsorption of univalent atoms and diatomic molecules on the surface of carbon nanotubes
Russian Journal of Physical Chemistry B - Tập 6 - Trang 448-454 - 2012
Quantum-chemical semiempirical calculations were performed of the adsorption of
fluorine and hydrogen atoms and molecules on the surface of single-layered
carbon nanotubes with various diameters. Semiempirical quantum-chemical MNDO
calculations were based on the model of a molecular cluster with boundary
pseudoatoms. The energy characteristics of adsorption were determined. Changes
in physical pro...
Gasless combustion wave with extremely high excess enthalpy under heat loss conditions
Russian Journal of Physical Chemistry B - Tập 5 - Trang 110-115 - 2011
A numerical experiment on investigation of a gasless combustion wave propagating
at the limit due to a high excess enthalpy in the heating zone is performed.
Under heat loss conditions, waves emerge on the surface of the combustion front,
causing changes in the rate of chemical reactions similar to those realized on
the burning surface of propellants and explosives.
The Mutual Influence of the Turbulence Coefficient and Reynolds Number on the Formation of a Turbulent Process: 1. The Randomness Coefficient
Russian Journal of Physical Chemistry B - - 2023
The equations of multimoment hydrodynamics, supplemented by stochastic
components, are used to study the chaotic distortion of a regular flow in the
wake of a sphere. The mutual influence of the Reynolds number and the intensity
of weak disordered perturbations in the incident flow, characterized by the
turbulence coefficient, is investigated. The calculations show that the
turbulent flow pattern ...
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