2304-9782, 2618-8686, 2405-7223 3 177 2013

RAR RUS 9-17 Shaganov Anton shaganovanton@gmail.com 0000-0002-2793-5717 Peter the Great St. Petersburg Polytechnic University Filimonov Alexey filimonov@rphf.spbstu.ru

St. Petersburg, Russian Federation

Ohwada Kenji ohwada@spring8.or.jp Coherent X-ray scattering as technique of nanoregions formation study in model PMNPT10 relaxor The paper describes a method for nanoinhomogeneous materials diagnostics using coherent X-ray (synchrotron) radiation through the example of a model ferroelectric relaxor lead magnesium niobate-lead titanate (PMNPT10). The results of X-ray scattering experiments on PMNPT10 show the presence of foci of polarization in the material both below and above the phase transition temperature. The results of modeling of scattering by simple two-dimensional lattices also are presented. 538.913: 620.22-022.53 nanoinhomogeneous materials ferroelectric relaxor PMNPT10 diagnostics coherent X-ray radiation https://physmath.spbstu.ru/article/2013.20.1/ 01.pdf

RAR RUS 18-28 Komarova Olga olik-komarik@rambler.ru Martynova Olga olya218@yandex.ru Peter the Great St. Petersburg Polytechnic University Gasumyants Vitaly vgas@rphf.spbstu.ru Cerium doping influence on the energy spectrum parameters in the Nd[2–x]Ce[x]CuO[y] system The temperature and concentration dependences of the thermopower in Nd[2–x]Ce[x]CuO[y] (х = 0.025 – 0.250) system have been analyzed using three models of the electron transport, i.e. Xin's two-band model, two band model with a linear T-term and narrow-band model. It is shown, that the best agreement of the experimental and calculated results can be achieved in the framework of the narrow-band model. The model parameters in studied samples were determined and a character of their variation with increasing cerium content was analyzed. This allows us to confirm the validity of the supposition that a new narrow conduction band is formed in the Nd[2]CuO[y] energy spectrum under cerium doping. 538.945 high-temperature superconductors electron transport phenomena energy spectrum doping https://physmath.spbstu.ru/article/2013.20.2/ 02.pdf

RAR RUS 29-41 Veis Alexander alnveis@mail.ru Zhitinskaya Maria m_zhitinskaya@mail.ru Lukyanova Lidia lidia.lukyanova@mail.ioffe.ru Kutasov Vsevolod v.kutasov@mail.ioffe.ru Peculiarities of bismuth telluride  energy spectrum from optical measurements data Spectral dependencies of optical reflection and absorption coefficients in n- and p-Bi[2]Te[3] at T = 300 K have been investigated and analyzed. The band scheme of bismuth telluride corresponded to experimental data was put forward. 621.315.592 bismuth telluride optical reflection and absorption band scheme https://physmath.spbstu.ru/article/2013.20.3/ 03.pdf

RAR RUS 42-47 Borisov Vladimir vladimirl.borisov@gmail.com Borisova Margarita The determination of the carrier mobility in transparent ferroelectric ceramics The surface potential decay in transparent ferroelectric ceramics PLZT-9 determined by charge relaxation processes in ceramics has been studied. The experimental results were analyzed on the basis of dispersive transport model that proposed repeated trapping of charge carriers into deep traps with their consequent thermal releasing and moving through ceramics bulk. The time-dependence of carrier mobility at constant temperature was calculated. 537.226.33 ceramics potential charge relaxation dispersive transport mobility activation energy electron traps https://physmath.spbstu.ru/article/2013.20.4/ 04.pdf

RAR RUS 48-54 Tsakaev Abdul-Vakhab abdul-vahab91@mail.ru Kochereshko Vladimir Vladimir.Kochereshko@mail.ioffe.ru Effects of exciton spatial dispersion in zinc selenide quantum wells The phenomenon of the natural optical activity has been found and studied in ZnSe/ZnSSeMg single quantum well using reflectivity spectra at oblique light incidence. 535.564 gyrotropy natural optical activity spatial dispersion https://physmath.spbstu.ru/article/2013.20.5/ 05.pdf

RAR RUS 55-59 Pashchenko Vladimir v.paschenko@gmail.com Controlled surface acoustic wave phononic crystal based on induced periodic domains A novel type of controllable phononic crystal controlled by external static electric field that induced periodic domains in ferroelectric thin film has been proposed. Finite element simulation results of frequency dependent of transmission coefficient and dispersion curves at first Brillouin zone are presented. The change of phononic band gap width via changing the electric field which induced the periodic domains in ferroelectric thin film was shown. 534.2, 534-18 controlled phononic crystal induced piezoeffect surface acoustic wave periodic domains ferroelectric film https://physmath.spbstu.ru/article/2013.20.6/ 06.pdf

RAR RUS 60-68 Kozyrev Dmitry diman-mich@yandex.ru Burbaev Timur burbaev@sci.lebedev.ru Electron-hole liquid yellow-green photoluminescence in SiGe tunnel-transparent layers of silicon heterostructures The formation of quasi-two-dimensional multiparticle excitations − biexcitons, electron-hole liquid (EHL) and plasma in tunnel-transparent for electrons SiGe layers of Si/Si0.91Ge0.09/Si heterostructures has been investigated by methods of photoluminescence (PL) in the near-infrared (NIR) and visible spectral ranges. When the PL line form in the visible region was compared with the numerical convolution of the spectrum in the NIR region, corresponding to one-electron transitions in EHL, it was apparent that the radiation in the visible region at low temperatures and high levels of excitation were caused by the two-electron transitions in quasi-two-dimensional EHL. 539.293+539.55 SiGe heterostructures electron-hole liquid two-electron transitions https://physmath.spbstu.ru/article/2013.20.7/ 07.pdf

RAR RUS 69-79 Peter the Great St. Petersburg Polytechnic University Abramov Alexei abramov@runnet.ru Kovalev Gordei E-5484-2014 56020596900 Peter the Great St. Petersburg Polytechnic University Smirnov Evgeny aero@phmf.spbstu.ru

Russia, 195251, St.Petersburg, Polytechnicheskaya, 29

Numerical simulation of circulation of steam-air mixture and film condensation on series of vertical tubes The paper presents results of 3D steady-state RANS computations of turbulent convection of steam-air mixture performing a circulating motion in a confined enclosure under conditions of film condensation of steam on an infinite row of cooled vertical tubes located in the central part of enclosures. The aim of the computations is to study the influence of the distance between the tubes on the flow structure and heat transfer characteristics. Software implementation of the presented mathematical model of the processes under consideration has extended the possibilities of the in-house CFD-code SINF. On the base of the obtained computational results a comprehensive analysis of the structure of the velocity, temperature and concentration fields, as well as the distribution of the heat flux on the surfaces of the tubes is done. 536.25:536.423.4 free convection heat and mass transfer film condensation non-condensable gases numerical simulation turbulence https://physmath.spbstu.ru/article/2013.20.8/ 08.pdf

RAR RUS 80-91 MBN Research Center at Frankfurt Innovation Center of Biotechnology Verkhovtsev Alexei verkhovtsev@mbnexplorer.com

Frankfurt am Main, Germany

MBN Research Center at Frankfurt Innovation Center of Biotechnology Korol Andrei korol@mbnexplorer.com

Frankfurt am Main, Germany

7003387326 0000-0003-1602-6144 MBN Research Center at Frankfurt Innovation Center of Biotechnology Solov'yov Andrei solovyov@mbnresearch.com

3 Altenhöferallee, Frankfurt am Main, 60438, Germany

Theoretical investigation of electron excitations in photoionization of nanoscale carbon-based systems We present the results of investigation of electron excitations in various carbon-based nanoscale systems in the process of photoionization. As a case in point, we consider a number of highly symmetric fullerenes, namely C[20], C[60] and C[80], as well as aromatic hydrocarbons: benzene (C[6]H[6]) and coronene (C[24]H[12]). The calculations are performed within the model approach, based on the plasmon resonance approximation, and the ab initio framework as well. Analysis of the results demonstrates that the main contribution to the photoionization spectra of nanoscale carbon systems is due to collective excitations of delocalized electrons, known as plasmons. Results of the model-based calculations are in close agreement with those of the more accurate quantum-chemical calculations and correspond also to the existing experimental data. 537.56, 544.18 fullerene aromatic hydrocarbon plasmon electron excitations ab initio methods plasmon resonance approximation photoionization https://physmath.spbstu.ru/article/2013.20.9/ 09.pdf

RAR RUS 92-98 Skublov Alexei alex.s@018.net.il Sovkov Vladimir vladimir_sovkov@mail.ru Ivanov Valery v_s_ivanov@mail.ru Triplet states of heavy alkali metal dimers: observation and analysis The latest results on the study of the triplet states of the heavy alkali metal dimers have been summed up. The investigations were aimed at an analysis of the experimental data on the perturbation facilitated optical-optical double resonance (PFOODR) spectroscopy. The technique of such data treatment was described and demonstrated. 539.19 alkali metal dimers adiabatic potentials experimental data analysis https://physmath.spbstu.ru/article/2013.20.10/ 10.pdf

RAR RUS 99-105 Serebryakov Alexander alexs@comita.ru Moroz Andrei andrey.p.moroz@gmail.com 0000-0003-0309-5917 Peter the Great St. Petersburg Polytechnic University Berdnikov Yaroslav berdnikov@spbstu.ru Miller Mikhail iftp@dubna.ru Efremov Yuri iftp@dubna.ru Khrunov Vladimir iftp@dubna.ru The features of the silicon gamma-ray detector amplitude spectra The paper considers the peculiarities in gamma-ray spectra collection by silicon detector. The computer model which takes into account inhomogeneous charge collection in the detector volume allows calculation of correct spectra for essentially different gamma-line energies which coincide with the experimental spectra rather well. The influence of incomplete charge collection in the crystal sensitive volume by amplitude spectra is demonstrated. 519.6, 539.12, 539.1.074 gamma-spectrometry silicon detector computer simulation incomplete charge collection https://physmath.spbstu.ru/article/2013.20.11/ 11.pdf

RAR RUS 106-114 0000-0003-0309-5917 Peter the Great St. Petersburg Polytechnic University Berdnikov Yaroslav berdnikov@spbstu.ru Peter the Great St. Petersburg Polytechnic University Berdnikov Alexander alexber@phmf.spbstu.ru

Russia, 195251, St.Petersburg, Polytechnicheskaya, 29

Yevseyev Valery evs@pnpi.spb.ru Miftakhov Nail' nail@pnpi.spb.ru Nikulin Vladimir vladimir.nikulin@cern.ch Samsonov Vladimir Tarasenkova Olga tarassen@pnpi.spb.ru Muon arm upgrade and beampipe support in ALICE experiment at LHC The paper describes the integration aspects of the ALICE Muon Arm upgrade, the beam-pipe support in particular. Two options were considered. The test bench built in order to estimate the uncertainties in the mechanical analysis caused by the bellow model was described. It was also demonstrated that simple model of the bellows gives reasonable description of the results. 539.1.07;539.1.074 ALICE experiment muon spectrometer beampipe support test bench Large hadron collider https://physmath.spbstu.ru/article/2013.20.12/ 12.pdf

RAR RUS 115-122 Aronova Ekaterina earonova@mail.ioffe.ru Emelyanov Victor resso2003@bk.ru Shvarts Maxim Shvarts M.Z. Prediction of energy performance of multijunction A{3}B{5} photoconverters with optical concentrators in different geographic regions In the paper the simulation of the response of the working parameters of multijunction A{3}B{5} photoconverters with optical concentrators on the change in the spectral composition of the solar radiation in different climatic conditions has been performed. Energy production of the photoconverters in several geographical locations was estimated. It was shown that inaccuracy of prediction of the energy production might be up to 16 % high in the case of neglecting photoconverter efficiency changing under the incident light spectral composition variation. 621.383.4:620.91 solar cell multijunction photoconverter photovoltaic module energy production https://physmath.spbstu.ru/article/2013.20.13/ 13.pdf

RAR RUS 123-129 Mishin Maxim maximvmishin@gmail.com, mmishin@spbstu.ru Peter the Great St. Petersburg Polytechnic University Alexandrov Sergey salexandrov@spbstu.ru Electrical potential distribution along the reactor with atmospheric pressure remote plasma The original design of electrical probe and the investigation techniques for ion flux characteristics have been developed. The measurements were carried out in the reactor equipped remote low temperature plasma generated by radio-frequency (RF) helium discharge (13.56 MHz) at atmospheric pressure. The experimental data on distributions of ion concentrations and electrical potential along the reactor, outside of the discharge gap were given. 533.9 electrical potential remote plasma RF-discharge atmospheric pressure electrical probe ion flux https://physmath.spbstu.ru/article/2013.20.14/ 14.pdf

RAR RUS 130-135 Babenko Tatiana Golyaeva Anastasia Lobanov Petr Manuylovich Ivan Sidoryuk Oleg O.E.Sidoryuk@gmail.com Quality evaluation for optical glass-ceramics parts using laser phase-shifting interferometry The article is devoted to refinement of the criteria of striae control of optical glass-ceramics, introduction of quantitative characteristics through the use of phase-shifting interferometry techniques with the construction of local wavefront distortion maps in the material volume. 681.787 phase-shifting interferometry striae glass-ceramics wavefront distortion https://physmath.spbstu.ru/article/2013.20.15/ 15.pdf

RAR RUS 136-143 Demkin Vladimir demkin@snrg.ru Ryazan State University named for S.A.Yesenin Stepanov Vladimir vl.stepanov@365.rsu.edu.ru Ryazan State University named for S.A.Yesenin Shadrin Maxim m.shadrin@russia.ru Rapid prototyping systems with laser scanning The article considers the influence of the factors limiting the accuracy of the laser triangulation measuring instruments and especially their applications in rapid prototyping. Particular attention is paid to an abrupt change of the reflection coefficient, the influence of slope and shadow areas. To improve scanning accuracy and reduce the factors that limit the possibilities of triangulation gauges, we propose a new orthogonal to the optical design of the laser sensor. 621.391:681.142 laser triangulation prototyping CNC https://physmath.spbstu.ru/article/2013.20.16/ 16.pdf

RAR RUS 144-150 Emelyanov Alexei emelyanov000@gmail.com 0000-0002-2519-2577 Peter the Great St. Petersburg Polytechnic University Gabdullin Pavel gabdullin_pg@spbstu.ru 0000-0002-3321-7797 Peter the Great St. Petersburg Polytechnic University Arkhipov Alexander arkhipov@rphf.spbstu.ru Peter the Great St. Petersburg Polytechnic University Gnuchev Nikolay nmg@rphf.spbstu.ru Surface morphology and field emission of the magnetron deposited carbon films The influence of growth temperature of carbon films on their surface morphology and field emission has been investigated. Growth temperature range, where carbon-on-silicon films display the emission activity was found. 537.533.2 atomic force microscopy carbon films magnetron deposition surface morphology field emission https://physmath.spbstu.ru/article/2013.20.17/ 17.pdf

RAR RUS 151-155 Kiesewetter Dmitry Ilin Nikita The intensity distributions of the light near the output end of the optical fiber in the presence of optical vortices The effect of rotation of speckle of multimode optical fiber has been confirmed experimentally when moving plane observations along the fiber axis near the surface of the output end. Using the calculation of cross correlation function between the distributions of intensity the angular speed of rotation of speckle was determined. 53.083.91: 535.3 optical fiber optical vortex speckle intensity distribution of light output end of optical fiber https://physmath.spbstu.ru/article/2013.20.18/ 18.pdf

RAR RUS 156-161 Kniazkov Anatoly akniazkov@mail.ru Polarize-optical light modulation An analysis of polarize-optical modulation (POM) of the light flow by electro-optical (EO) medium has been performed. POM without aperiodic transformation and with the transformation of the spectrum was reviewed. It was shown that the electro-optical modulation occured with the transformation of the spectrum. The dependence of the contrast ratio POM of the width of the emission spectrum in the case of one EO medium and the optical transmission of the modulated radiation POM for the two EO mediums were obtained. 535:621.373.8:6 polarize-optical modulation electro-optical medium spectrum conversion contrast modulation https://physmath.spbstu.ru/article/2013.20.19/ 19.pdf

RAR RUS 162-166 Arbuzov Vitaly arbuzov@itp.nsc.ru Bufetov N.S. arbuzov@itp.nsc.ru Aliukaeva Olga aliukaeva@yandex.ru The determination of density and concentration of aqueous solutions of salts by optical way (lithium bromide as an example) The results of investigation into a technique for determination of density and concentration of aqueous solutions of salts through a lithium bromide solution as an example have been presented, using changes of a refractive index that depend on solution density. Refractive index values for LiBr solution depending on concentration and temperature for monochromatic radiation at wavelengths of 660 and 532 nm were obtained. 535.3:536.423.4 absorption refractive index aqueous solution concentration lithium bromide refractometry https://physmath.spbstu.ru/article/2013.20.20/ 20.pdf

CNF RUS 162-176 Peter the Great St. Petersburg Polytechnic University Morozova Natalia natusmorozovna@gmail.com Vedyaykin Alexey Sabantsev Anton 0000-0003-0836-0732 Peter the Great St. Petersburg Polytechnic University Pobegalov Georgiy lwdrums@gmail.com Murashov Sergey smurashov@cef.spbstu.ru 0000-0003-0562-0156 Peter the Great St. Petersburg Polytechnic University Khodorkovskii Mikhail khodorkovskii@gmail.com Membrane tether formation from human hepatocytes For the first time to our knowledge the mechanical properties (membrane tension and apparent viscosity) of human hepatocyte (HepG2 cell line) membranes were measured by membrane tether formation using optical trap. Membrane tension and apparent membrane viscosity were measured to be 40 ± 3 pN and 0.27±0.07 pN·s/µm respectively. The developed procedure can be used to study connections between liver cell membrane mechanics and different factors, including ethanol and drug consumption, aging, pathological processes, etc. 57.086.2 membrane tether formation optical trap HEPG2 cell membrane hepatocytes https://physmath.spbstu.ru/article/2013.20.21/ 21.pdf

CNF RUS 177-181 Skvortsov Nikita aelu@yandex.ru Samoilov Vladimir deanery@mphf.spbstu.ru Larionov Ivan larionov_ivanvl@mail.ru Boldyrev Alexander Doc.Boldyrev@yandex.ru An effective sorbent for elimination  endotoxin in biological products of genetically engineered genesis and biological liquids An effective sorbent designed to eliminate endotoxin from biological fluids and products has been developed. A highly permeable biocompatible matrix based on regenerated cellulose was used as a base of the sorbent. The efficiency of the sorbent for endotoxin from model solutions and protein solutions were estimated. 615.012.8 sorbent elimination endotoxin biological products genetic engineering protein solution biocompatible matrix https://physmath.spbstu.ru/article/2013.20.22/ 22.pdf

CNF RUS 182-189 Nikonorova Natalia n-nikonorova2004@mail.ru E-4237-2014 12784708700 0000-0001-9050-4453 Peter the Great St. Petersburg Polytechnic University Kapralova Victoria kapralova2006@yandex.ru

Russia, 195251, St.Petersburg, Polytechnicheskaya, 29

Herzen State Pedagogical University of Russia Castro Arata Rene recastro@mail.ru Zhuravlev Dmitry superzhmur@gmail.com Dielectric relaxation of grafted polyimides with long polytretbuthylmethacrylate side chains Molecular mobility of polyimide brushes, grafed polymers with long polytretbuthylmethacrylate side chains, was investigated by dielectric method. In the glassy state two local relaxation processes, β and β1, whose molecular mobility depends weakly on side chain lengths, were found. In the viscous elastic state the α cooperative relaxation process caused by segmental motion of side chains was observed. For the α process, the molecular mobility decreases with the length of polytretbuthylmethacrylate side chains. 541(64+14):539.199 polyimide brushes molecular mobility relaxation time dielectric spectroscopy https://physmath.spbstu.ru/article/2013.20.23/ 23.pdf

CNF RUS 190-201 Alekseenko Sergei sn-alekseenko@yandex.ru Shemyakina Tatiana sh_tat@mail.ru Dontsowa Marina dontsowa.marina2011@yandex.ru Nonlocal resolvability conditions for systems  of the first order partial differential equations Conditions of a nonlocal resolvability of the Cauchy problem for a system of two quasilinear first order partial differential equations are received. The investigation of the considered problem is based on the method of an additional argument. 517.9 quasilinear first order partial differential equations cauchy problem method of additional argument https://physmath.spbstu.ru/article/2013.20.24/ 24.pdf

CNF RUS 202-211 Gorev Boris gorevbv@yandex.ru Panamarev Victor panva@qde.ru The integrated characteristics method for calculation of a bend of design Possibility of use of integrated characteristics on a bend [1] for calculation of forming process and relaxations of details with a constant thickness from sheet and plates having surfaces close to developable from anisotropic alloys with different resistance to a stretching and compression at a flat stress state in the creep conditions is proved. The technique of definition of functional dependences parameters from processing of experimental diagrams on a pure bend of rectangular beams and torsion of square plates for calculation process of plates bending with use of the relationship between rates of change curvature and the moments for orthotropic materials in the assumption of identical properties on a stretching and compression is spent [2]. 539.374+376 integrated characteristics method forming creep bending single and double curvatures flat stress state https://physmath.spbstu.ru/article/2013.20.25/ 25.pdf

CNF RUS 212-219 Larichkin Alexei larichking@gmail.com Gorev Boris gorevbv@yandex.ru The constructing shear strains from the pure torsion of round solid samples Through the example of titanium VT-9 and aluminium alloys (D16T, AK4-1T, AMG-6M) the possibility of describing the creep and fracture on torsion of solid round samples has been demonstrated. The power law of creep was used. The kinetic creep equation in the energy form describes three stages of creep. Satisfactory agreement between the experimental and settlement data was obtained. 539.3 creep shear strain pure torsion round solid shaft kinetic equation https://physmath.spbstu.ru/article/2013.20.26/ 26.pdf

CNF RUS 220-229 Ganin Pavel ganin-pavel@rambler.ru Schmidt Alexander alexander.schmidt@mail.ioffe.ru Estimation of diameter of the smallest secondary droplets taking into  consideration a number of break up tеsts of the largest droplets in the apparatus with stirring This investigation is devoted to substantiation of the smallest droplets presence in polydisperse emulsion in a liquid – liquid system with stirring. A model of the smallest size secondary droplets formation is proposed: a break up of the largest droplets in a three secondary droplets, the model taking into consideration the number of tests per a break up during a time of droplets presence in the stirring zone. Calculated values are compared with known experimental data. 532.517.4 : 532.529.5 + 63 turbulent flow liquid – liquid break up of droplets number of tests fine fraction mechanizm of formation https://physmath.spbstu.ru/article/2013.20.27/ 27.pdf

CNF RUS 230-236 Sanin Andrey andreylsanin@yandex.ru Semyonov E.A. seaman2003@tut.by Quantum two-dimensional oscillators with Pallen – Edmonds coupling  potential The numerical integration of the non-stationary two-dimensional Schrodinger equation was carried out. In the context of quantum wave-packets, dynamical means, frequency spectra, uncertainty relations, autocorrelators there were studied the dynamical properties for two quantum oscillators coupled by the Pallen – Edmonds potential. In the regime of the weak coupling the many-frequency oscillations are generated, the spectral component number is increased at amplification of coupling. 530.145 coupled oscillators Pallen – Edmonds potential frequency response two-dimensional Schrodinger equation https://physmath.spbstu.ru/article/2013.20.28/ 28.pdf

CNF RUS 237-244 Charikov Yuri y.charikov@yandex.ru Globina Veronika gvi1109@gmail.com Sklyarova Elena sklyarova.mhd@mail.ioffe.ru Hard X-ray time delay spectra of solar flares: BATSE spectrometer data A time delays of X-rays in the energy range of 20 – 200 keV registered by BATSE spectrometer during a space flight of CGRO have been considered. Pair wise correlation functions for all time series with a significant count rates were computed. Delay spectra are based via X-ray energy for different phases of flares. In the initial phase of the burst the delays increase monotonically with increasing energy. At the peak of the radiation pattern of the spectrum of different bursts is changing: from U-shaped to monotonically decreasing. On the decay phase of the count rate the delay spectra rather repeat the same of the maximum. A comparison of the delay spectra to the delays, following the models of the transport of the accelerated electrons were carried out. 523.985.3 sun flares hard X-ray time delays BATSE spectrometer https://physmath.spbstu.ru/article/2013.20.29/ 29.pdf

CNF RUS 245-249 Morachevski Andrey morachevski@mail.ru Firsova Elena Academician Pavel Ivanovich Walden (On the occasion of his 150th birthday) The article is devoted to a life and scientific activities of P.I. Walden (1863 – 1957), who was an outstanding chemist and a historian of chemistry. He took part in the foundation of Polytechnical Institute in Saint Petersburg, then was a rector of Riga Polytechnical Institute, an ordinary academician of Petersburg Academy of Science, a foreign honorary member of the Academy of Science of the USSR. The scientist is known, first of all, for his works on physical chemistry and electrochemistry of non-aqueous solutions as well on stereo-chemistry. 001+54 Walden Riga polytechnical institute academy of science of Petersburg physical chemistry https://physmath.spbstu.ru/article/2013.20.30/ 30.pdf