The Mixing and Segregation Effects During Shear Deformation of Cohesionless Particulate Solids (in English) Text of paper (pdf-file)
Key words and phrases:
electronic measurement equipment; intertesting interval; metrological characteristic.
Abstract: The paper examines various kinds of mathematical models of temporal variation of metrological characteristics; the optimum kind of models with the application of rational interpolation is selected. Extrapolation of the constructed analytical dependences on the area of the future values of the operating time allows defining indicators of metrological reliability as well as intertesting intervals.
Key words and phrases: camcorder; control; system.
Abstract: The camcorder as an intelligent sensor can be used in automatic control systems for production processes. The functional scheme of automatic control system with camcorder can give information about time delays in reverse link system.
Key words and phrases: admissible basis solution; Dantzig’s method; initial simplex-table; research into operations.
Abstract: The paper specifies Dantzig’s method to determine the initial admissible basis for linear programming tasks with its subsequent application to the construction of the initial simplex-table.
Key words and phrases: adjustable parameters vector; iteration algorithm of control; forecasting model; sensitivity equation; cycle of trajectory correction.
Abstract: The paper offers iterative algorithm of control over finite condition of the nonlinear dynamic object and its realization on the example of the fighter direction to the air target with the specified aspect angle. Due to the forecasting model application which involves both the object model and the sensitivity equations to determine the corrections to the adjustable parameters vector, the task of terminal control is solved without the procedures of numerical differentiation in the course of determining the sensitivity of object coordinated to the control parameters, thus improving the accuracy and stability of the control algorithm.
Key words and phrases: capillary-porous material; diffusion coefficient; galvanic converter of solvent content in solid phase; non-destructive control; polar solcent.
Abstract: Automatic system of nondestructive control over solvent diffusion coefficient in fine products made of capillary-porous materials is studied. This system enables automatic experiment running, measurement and monitoring of all experimental data in real time as well as desired parameter calculation according to elaborated algorithm.
Key words and phrases: cold flow; energy-saving; heat transformation; hot flow; Ranque-Hilsch vortex effect; vortex tube.
Abstract: The paper studies the possibilities of the application of Ranque-Hilsch vortex tubes in chemical engineering, primarily in energy-saving drying processes under high temperature and productivity. The need for the experimental testing of the specific cases is justified. The selected data table and the published characteristics of experimental, working in practice and developed plants are used to analyze and select the lab solutions.
Key words and phrases: computer-aided design; informational and logical model; mathematical model; pipeline routing.
Abstract: In the article the statement of the problem of choosing the optimal spatial arrangement of trails of the technological pipelines within the plant premises, taking into account existing standards and design rules is considered.
Key words and phrases: equation of the frequency; impedance boundary; mathematical modeling; method of D-partitions; stability boundaries.
Abstract: The paper studies the stability of the system pipeline–load with regard for the heterogeneity of flow properties in the longitudinal coordinate investigated. The boundaries of stability regions are identified. The comparison with the homogeneous case is made.
Key words and phrases: mass transfer; Monte-Carlo method; spontaneous interfacial turbulen
Abstract: The paper presents the approximation technique of kinetic curves of mass transfer using Monte-Carlo method in conditions of spontaneous interfacial turbulence. Its applicability boundaries are determined via numerical experiments.
Key words and phrases: active zone; settling velocity; purification efficiency; electrocyclone.
Abstract: The paper presents the deduction of criteria equation enabling to calculate the purification efficiency in electrocyclone.
Key words and phrases: supercritical water; hydrogen link; molecular
Abstract: The paper presents the research into hydrogen bonding in sub- and supercritical water in the area close to the saturation curve under the constant pressure of 30 and 50 MPa and constant temperature of 673 K. The method of molecular dynamics using the model potential TIP4P-HB is applied to the calculation of topological characteristics of hydrogen link: the average number of hydrogen links per water molecule, the degree of hydrogen bonding, distribution of molecules by the number of hydrogen links. Their change depending o the temperature, density and pressure is examined.
Key words and phrases: chalcone; Schiff bases; UV and infrared spectra of chalcone derivatives.
Abstract: Condensation of 4-(N,N-dimetihylamino)chalcone with aromatic amines in alkaline medium results in Schiff bases. The nature of reaction products is confirmed by UV and IR spectra.
Key words and phrases: ammonium chloride; assessment; diammonium phosphate; eutonic solution; monoammonium phosphate; phase diagram; sections method; water-salt system.
Abstract: The paper presents the improved method for the determination of the compositions of invariant solution and solid phases, which are in the state of equilibrium with it illustrated by the 4-component water-salt system || Cl– — H2O at 25 °Ñ. The new assessment procedure of the invariant composition based on the data of the ternary systems is given.
Key words and phrases: chemical adsorption; dynamics; mass transfer; mass transfer coefficient; superoxide.
Abstract: The paper presents analytical solutions to the equation of chemical adsorption dynamics; the parameters of the equations for the regenerative substances on the basis of superoxides and absorbers on the basis of hydroxides of alkaline metals are determined.
Key words and phrases: carbon dioxide; ñhemical adsorber; chemisorbent; degree of transformation; elastic substrate; energy of activation; kinetiks chemical reaction.
Abstract: It is investigated kinetiks absorption carbon dioxide ÑÎ2 limy chemisorbent in static conditions at various values. The equation for the description kinetiks adsorptions is picked up and kinetic parameters of reaction of interaction chemisorbent with carbon dioxide are determined.
Key words and phrases: eigenvector; matrix of symmetric terms; positive matrix; positive eigenvalue; type of positive matrix.
Abstract: A classical result of Perron existence of a dominant positive eigenvalue of a positive matrix is generalized to a wider class of matrices that admit the existence of negative elements.
Key words and phrases: volt-ampere characteristic; heterojunction structure; silicon; contact potential difference; cadmium sulfide; technology; photosensitivity; photoelectric converter.
Abstract: This article describes the results of the research into photoelectrical characteristics of CdS/Si(p) heterojunction structures, produced by the technology of cadmium sulfide film deposition in aqueous solutions. It studies the possibility of application of these heterojunction structures as photoelectric converter of solar energy.
Key words and phrases: field effect; primary measuring converter; semiconductor; thermo sensitive element.
Abstract: The paper describes the results of the research into the influence of mechanical load and temperature on the semiconducting structures. The algorithm of calculation of optimal electro physical and design parameters of the proposed converter is presented. The issue of thermo compensation in the measurements of the plastic flow size is examined.
Key words and phrases: qualitative index; mixing; mixing effect; total value of the shear.
Abstract: The dependence for the total deformation shear calculation for the mixing process, which makes it possible to estimate the quality of the obtained composite, is determined.
Key words and phrases: autographed decrees; the Building charter; civil engineering; imperor’s decrees; management of building business; regular town-planning; rural housing construction; town-planning legislation; town-planning policy.
Abstract: The article is devoted to the town-planning policy of the Russian empire in the field of rural housing construction. Standard sources of legal control of rural town-planning in the XVIII–XIX centuries are defined and analyzed, from the moment the first acts of the all-Russian legislation came out to the beginning of the XX century.
Key words and phrases: carbon nanotubes; catalyst; CVD.
Abstract: The paper studies the influence of temperature, composition and feed rate of gas on the yield and parameters of carbon nanotubes obtained by chemical vapor deposition from hydrocarbons.
Key words and phrases: mathematical modeling; quality management; multi-criteria synthesis; composite materials; structuring; optimization of structure and properties.
Abstract: Composite materials of special purpose are represented as complex technical systems. The new approach to multi-criteria synthesis of composite materials as to control task is offered. On the basis of this approach optimization of properties and structures of the composite materials with improved protective properties from the influence of aggressive environments and ionizing radiations applied to the objects heavy and nuclear industries is carried out.
Key words and phrases: electrical safety of village circuits; fault search time; one-phase earth connection; outgoing circuits areas; relay protection devices; shortcut location detection; uninterruptible power supply.
Abstract: Although the fact of earth connection is not a sign of emergency mode operation it can eventually be modified into this mode – the mode of double earth connection. The paper proposes the technique improving the reliability of the power supply of consumers and the safety of electrical circuits with insulated neutral by the prompt detection of the damaged area location in the circuit.
Key words and phrases:homogeneous alkaline catalyst; mathematical model; methanolysis of vegetable oil; vortex layer of ferromagnetic particles
Abstract: The paper presents the mathematical model for the process of methanolysis of vegetable oil in the presence of the homogeneous alkaline catalyst in the vortex layer apparatus of ferromagnetic particles. The mathematical model includes the hydrodynamics equation of reaction mixture, Ampere-Maxwell equation for the description of the electromagnetic field in the apparatus and the equations of the hetero-geneous liquid phase reactions of nucleophylic substitution producing methyl ethers of higher aliphatic acid
Key words and phrases: distillery slop; distillery slop processing; distillery industry; ecology.
Abstract: The paper describes the problems of recycling of distillery industry waste, it gives the review of the existing and perspective technologies of distillery slop processing; their advantages and disadvantages are compared, the recommendations with reference to the Russian manufacturing realities are made.
Key words and phrases: data communication technologies; electronic textbook; professional training.
Abstract: The paper studies the application of electronic textbook in the course of chemistry; activation of cognitive learning activity of students through the use of electronic textbook in educational process is analyzed.
Key words and phrases: educational institution; educational environment; cause-and-effect Ishikawa diagram; educational services market; labor market; capacity for innovation formation.
Abstract: TThe paper is concerned with the educational institution capacity for innovation formation and development as the basis of steady competitive position in the educational services market. The paper studies the possibility of application of cause-and-effect Ishikawa diagram for visualization and analysis of causes and factors which contribute to the capacity for innovation formation and development; the diagram was initially developed as a tool of quality management. The most significant external and internal factors and their influence on the stability of development of the educational institution are analyzed.
Key words and phrases: acceptable control; external influence; fundamental matrix; provision of crediting; set of combinations; size of main assets; system of the differential equations; vector function.
Abstract: The mathematical model of change of the capital stock size is constructed. The necessary and sufficient conditions for control when the model has the solution, defining development of the branches of economy with the given level of consumption are specified.
Key words and phrases: costs; costs behavior; useful and useless costs; ways of costs splitting.
Abstract: The division of costs into fixed and variable is of particular importance in accounting as the availability of such groups of costs provides an objective evaluation of the company performance efficiency. It justifies the need for clarification of the essence of fixed and variable costs essence and the examination of their behavior.
Key words and phrases: competency approach; competency framework; enter-prise of military-industrial complex; human resources management.
Abstract: The article concerns the competency building approach as the way of human resources management. According this method we can obtain precise definition of the precise definition and behavioral requirements to be lodged employees depending on their professions and positions. The competency framework enables to unify the requirements to the staff members and work out common standards of corporate behavior, the basis for staff assessment and promotion.
Key words and phrases: context; evaluation object; evaluative regulation; reverse regulation.
Abstract: Elements of evaluative regulation as a means of assessing economic situation in a journalistic text are considered in this paper. Evaluative regulation allows revealing the specific character the economic situation.
Key words and phrases: elections; electoral process; laws interpretation; New Economic Policy; political control; public prosecution; Soviets.
Abstract: The paper presents the realistic interpretation of legal norms of electorship by the local authorities in the course of the campaign aimed at the “Soviets’ revival”; it is illustrated by the materials of Tambov province. It is shown, that executing the state function of political control, both the Executive Committee of the Provincial Government and the Public Prosecution were not direct in their actions as it is interpreted by present-day authors, who equate the political control with the totalitarianism manifestations.
Key words and phrases: autobiography; Christianity; creativity; forgiveness; genre; hard times; history; intertext; motive; national soul; prophecy; quintessence; repentance.
Abstract: Dostoevsky’s intertext in V.E. Maksimov’s creative work is examined. The two novels by Maksimov are considered: «A Farewell from Nowhere» and «Wander to Death», which are close in the ideology and genre. The comparison of two main characters of novels is made, the influence of the novel by F.M. Dostoevsky «Demons» on the development ideological axiological structure of Maksimov’s works is considered.