18 Result(s)
within
A. N. Ignat’ev
English
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Article
Method of Automated Synthesis of Optimal Heat Exchange Network (HEN) Based on the Principle of Fixation of Variables
A new approach to the synthesis of a multistage heat exchange network is proposed based on the principle of fixation of variables. This principle enables one to reduce a discrete-continuous programming problem...
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Article
Characteristics of Changes in the Ozone Content in the Upper Stratosphere over Moscow during the Cold Half-Years of 2014–2015 and 2015–2016
The results of ground-based microwave measurements of the stratospheric ozone profiles over Moscow during the cold half-years of 2014–2015 and 2015–2016 are presented. The causes of the observed changes in the...
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Article
Variations in the Ozone Concentration in the Stratosphere over Moscow due to Dunamic Processes in the Cold Period of 2015–2016
New data on variations in vertical distribution of stratospheric ozone overMoscow in the cold half-year of 2015–2016 are presented. This period differed significantly from previous winters in a number of strat...
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Article
Influence of strong sudden stratospheric warmings on ozone in the middle stratosphere according to millimeter wave observations
This paper reports the study data on variations in the ozone content in the middle stratosphere over Moscow based on millimeter wavelength observations during a range of midwinter sudden stratospheric warmings...
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Article
Technique of Time-Frequency Analysis of a Series of Measurements of the Radiation Spectra of Night Mesospheric Ozone in the Millimetric Wavelength Range
A technique of time-frequency analysis of unevenly sampled data sets is developed to study variations in the night mesospheric ozone emission spectra obtained from ground-based millimeter-wave observations. Ba...
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Article
Features of interannual variations of ozone in the middle stratosphere over Moscow according to observations at millimeter waves
The features of interannual variations of ozone in the middle stratosphere over Moscow in cold half-years since 1995 to 2015 are considered. These features are most pronounced in two separated groups of winter...
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Article
Variations of the vertical ozone distribution over Moscow during sudden stratospheric warming in winter 2012–2013
The new results of remote sensing of atmospheric ozone over the Moscow region in the cold half-year of 2012–2013, including the period of major sudden stratospheric warming are presented. Methods for analyzing...
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Article
Features of the altitude-time distribution of ozone over Moscow during the strong ozone depletion in spring 2011 and during the statospheric warming in 2010 according to observations at millimeter wavelengths
The new observational data at millimeter wavelengths of the vertical distribution of stratospheric ozone over Moscow during the significant ozone depletion in the Northern Hemisphere in spring 2011 and during ...
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Article
Study of ozone concentration variations in the upper stratosphere using millimeter wave spectroscopy methods
New results of the study of ozone concentration variations in the upper stratosphere over Moscow in the layer at a height of 40 km, which is most sensitive to anthropogenic impacts, are presented. Changes in t...
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Article
Remote sensing of atmospheric ozone at millimeter waves
We present new results of remote sensing of the vertical distribution of ozone at millimeter waves using the FIAN (P.N. Lebedev Institute of Physics, Russian Academy of Sciences) high-sensitivity spectroradiom...
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Article
Millimeter radio wave monitoring of the vertical distribution of ozone over Moscow
The results ofmonitoring of the vertical distribution of ozone (VDO) over Moscow using millimeter waves are presented. The features of the altitude-time distribution of ozone, which reflects the ozonosphere ev...
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Article
The role of radical and molecular reactions in the processes of ozonization of aqueous solutions of non-dissociating compounds
A theoretical approach to determining regions where ozonation proceeds by radical and molecular mechanisms is proposed. Ozonation of aqueous solutions of non-dissociating substances in open and closed reactors...
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Article
Mathematical simulation as a method to study the influence of oxygen, hydrogen peroxide, and phosphate and carbonate ions on the kinetics of ozone decomposition in aqueous solution
The influence of oxygen, hydrogen peroxide, and phosphate and carbonate ions on the kinetics of ozone decomposition in an aqueous solutions was studied by using mathematical simulation. The apparent rate const...
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Article
Spectral instrumentation for monitoring atmospheric ozone at millimeter waves
A spectroradiometer operating in the 2-mm wavelength range for monitoring the ozonosphere from the Earth’s surface is described. Unique data on the vertical ozone distribution in layers of the stratosphere and...
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Article
A rate equation for a gas-liquid bimolecular reaction at low gas concentrations
The film model was used to suggest an equation that could be used to describe kinetics when the rate of a chemical reaction is first-order in the dissolved gas and dissolved substance with which the dissolved ...
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Article
An equation for the rate of a first-order gas-liquid reaction
An equation is suggested for describing the kinetics of gas-liquid reactions first order with respect to the dissolved gas without assumptions on the reaction control mode (kinetic, diffusion, etc.). The equat...
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Article
Modeling of the calculation of the atmospheric chlorine monoxide content from the data of ground-based observations at millimeter waves
Computer modeling of the calculation of the content of chlorine monoxide in the atmosphere is performed. Radiation spectra of the substance that are measured at 204 GHz with an optimized ground-based spectrora...
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Article
Designing 1.5-and 2-mm waveband radio spectrometers with optimized performance for atmospheric research
Performance of 142-and 204-GHz radio spectrometers is optimized for remote sensing of ozone and chlorine monoxide in the Earth’s atmosphere by means of computer simulation. Versions of spectrometers with one b...
