The study of electrod processes in molybdenum-containing chloride melts by non-stationary electrochemical methods

В настоящей работе изучаются электродные процессы в молибденсодержащих хлоридных расплавах методами вольтамперометрии: линейной и циклической, квадратно-волновой, хронопотенциометрией и хроноамперометрией. Определяется ионно-координационное состояние молибдена и идентифицируются физико-химические процессы с участием молибдена и его соединений в расплавах на основе хлоридов щелочных металлов.In present research work the electrod processes in molybdenum-containing chloride melts are studied by non-stationary electrochemical methods: linear and cyclic voltammetry, square-wave voltammetry, chronopotentiometry, chronoamperometry. Molybdenum speciation are determined and physical-chemical processes involving molybdenum species are identified in melts based on alkali chloride metals.Программа развития УрФУ на 2013 год (п.1.2.2.3

Electroproduction of nucleon resonances

The unitary isobar model MAID has been extended and used for a partial wave analysis of pion photo- and electroproduction in the resonance region W < 2 GeV. Older data from the world data base and more recent experimental results from Mainz, Bates, Bonn and JLab for Q^2 up to 4.0 (GeV/c)^2 have been analyzed and the Q^2 dependence of the helicity amplitudes have been extracted for a series of four star resonances. We compare single-Q^2 analyses with a superglobal fit in a new parametrization of Maid2003 together with predictions of the hypercentral constituent quark model. As a result we find that the helicity amplitudes and transition form factors of constituent quark models should be compared with the analysis of bare resonances, where the pion cloud contributions have been subtracted.Comment: 6 pages Latex including 5 figures, Invited talk at ICTP 4th International Conference on Perspectives in Hadronic Physics, Trieste, Italy, 12-16 May 200

Elastic Pion Scattering on the Deuteron in a Multiple Scattering Model

Pion elastic scattering on deuterium is studied in the KMT multiple scattering approach developed in momentum space. Using a Paris wave function and the same methods and approximations as commonly used in pion scattering on heavier nuclei excellent agreement with differential cross section data is obtained for a wide range of pion energies. Only for $T_{\pi}>250$ MeV and very backward angles, discrepancies appear that are reminiscent of disagreements in pion scattering on $^3$He, $^3$H, and $^4$He. At low energies the second order corrections have been included. Polarization observables are studied in detail. While tensor analyzing powers are well reproduced, vector analyzing powers exhibit dramatic discrepancies.Comment: 25 pages LATEX and 9 postscript figures in a self-extracting uufile archiv

Development of the expert system prototype "medexpert" for differential disease diagnostics

The task of this article is creation a prototype of expert system "MEDExpert" which will help to doctors in the analysis of collected data about the patient and the diagnosis. The article describes the "MEDExpert" system, intended for informational support of medical solutions in medicine using modern information technologies, in particular, image recognition methods. The system uses a general decision-making technique using a differential series and the analogy method. The main problems of the field of creating medical expert systems were analyzed, and with their help the practical principle of the program part of the system was obtained. An integrated approach was proposed to analyze the data and obtain the necessary information for detecting the disease. The Visual Studio 2015 development environment and C #programming language, as well as a set of Windows Forms graphical tools and the Microsoft SQL Server 2015 database management system implemented the prototype. Computer technology intended for the classification, diagnosis, assessment of the state, analysis of the interaction of regulatory and therapeutic processes, selection, evaluation and correction of therapeutic measures. "MEDExpert" can be used for training specialists

Probing Delta structure with pion electromagnetic production

The Dubna-Mainz-Taipei dynamical model for pion electromagnetic production, which can describe well the existing data from threshold up to 1 GeV photon lab energy, is presented and used to analyze the recent precision data in the $\Delta$ region. We find that, within our model, the bare Delta is almost spherical while the physical Delta is oblate. The deformation is almost saturated by the pion cloud effects. We further find that up to Q^2 = 4.0 (GeV/c)^2, the extracted helicity amplitude A_{3/2} and A_{1/2} remain comparable with each other, implying that hadronic helicity is not conserved at this range of Q^2. The ratio E_{1+}/M_{1+} obtained show, starting from a small and negative value at the real photon point, a clear tendency to cross zero, and to become positive with increasing Q^2. This is a possible indication of a very slow approach toward the pQCD region. Finally, we find that the bare helicity amplitude A_{1/2} and S_{1/2}, but not A_{3/2}, starts exhibiting the scaling behavior at about Q^2 \ge 2.5 (GeV/c)^2.Comment: Invited talk presented at the 2nd Asia-Pacific Conference on Few-Body Problems in Physics, Shanghai, P.R. China, 2002 (10 pages LATEX including 1 table and 5 figures

Isothiocyanates of phosphorus acids, N-phosphorylated thiocarbamates and thioureas

Current data on the synthesis, structures, the activities, and practical applications of the isothiocyanates of tri-coordinate, tetracoordinate, pentacoordinate, and hexacoordinate phosphorus acids and N-phosphorylated and N-thiophosphorylated thiocarbamates, dithiocarbamates, and thioureas are examined and surveyed. © 1985 IOP Publishing Ltd

Nanostructural features of anodic zirconia synthesized using different temperature modes

Nanotubular and nanoporous structures of ZrO 2 were synthesized by potentiostatic anodization with varying the temperatures of anode in the range of T A = 0 - 90 °C and electrolyte in the range of T El = 20 - 50 °C. It was shown that difference between T A and T El had significant influence on growth rate and morphology type of zirconia nanostructures. Optimal parameters of thermal modes for nanotubular ZrO 2 synthesis were discussed. © 2018 Institute of Physics Publishing. All rights reserved.Act 211 Government of the Russian Federation, contract № 02.A03.21.0006, supported the study. R.V.K. thanks RFBR research project № 18-33-01072 for support. A.S.V. and I.A.W. thank Minobrnauki initiative research project № 16.5186.2017/8.9 for support