Bykhovtsev V. E.
The computer analysis of a deflection of ceilings and stability of joint units of buildings with a wide step of cross bearing walls and columns. pp. 5--8
Summary: The results of computer modeling of a deflection of ceilings of buildings with a wide step of cross bearing walls and columns are presented. Multiempty plates of ceilings are examined as three-dimensional objects and can be In a stage of linear and nonlinear deformation The original method of finite element and an object-oriented modeling in DELPHI environment is applied
Yarovaya A. V., Starovoitov S. A.
A trilateral rod on elastic base. pp. 9--12
Summary: Formulation of the problems of the strained of sandwich beam on elastic foundation has been suggested. Analytic solution has been obtained. Numerical results are presented for the fixed beam.
CALCULATIONS AND MODELLING
Izmailov V. V., Novoselova M. V.
Simulation of mechanical and electrical processes of disperse material compaction. Report 3. Theoretical models for the calculation of specific electrical resistance of disperse material. pp. 13--17
Summary: The models of conductive disperse structures have been proposed theoretical dependences have been obtained for the calculation of the conductivity of porous disperse material with vacancies It is shown, that the conductivity of porous disperse structure depends on it relative density and on the degree of granule tarnishing Theoretical and experimental values of conductivity have been compared for molybdenum and tungsten specimens.
Sokolkin Yu. V. Chekalkin A. A., Eltyshev V. V.
Analysis of moment functions of the statistical structure of erosive tracks left by a water jet. pp. 18--22
Summary: Microstructure of an erosive track resulted from the action of a high-pressure water jet has been studied by the statistical processing methods. Moment functions have been constructed to describe microstructure of different erosive tracks. Random functions describing microstructure of erosive tracks can be related to homogeneous and ergodic from the statistical viewpoint.
MATERIALS
Vyentsek Zd.
Adhesive joints of oxidized aluminum alloys based on Shnyder's method. pp. 23--26
Summary: Preparations of the surface to making the glue junctions refers the structural builds of the conversional thin layers which are made by chemical and electrochemical methods. Leading part for anodic thin layers realizes regularity and perpendicularity of cells AL2O3 with maximum polarities. The work compositioin presents the original technological successes, large meaning for indastrial practices.
Kozlov G. V., Burya A. I., Dolbin I. V., Kholodilov O. V.
A effectivity of nonchain inhibition of thermooxidative degradation in polyethylenes: the fractal analysis of inhibitor particles structure. pp. 27--30
Summary: A effectivity of nonchain inhibition of thermooxidative degradation in polyethylenes: the fractal analysis of inhibitor particles structure.
The structural analysis of oxygen acceptor (mixture Fe/FeO) action at polyethylenes stabilization is represented. In framework of the fractal model is shown, that the main factors, determining a stabilization effect, are a local order degree change and screening action of acceptor particles surface.
Kudryavtsev I. A., Bogdanov V. P., Vasiliev A. A.
Study of interaction mechanism between Ca(OH)2 solution with CO2 in air. pp. 31--34
Summary: There was studied kinetics of carbonation of calcium hydroxide solutions of different concentration in contact with air. Results obtained gave possibility to find out peculiarities of kinetics and interaction mechanism of Ca(OH)2 with CO2 under static and hydrodynamic conditions dependence upon phase border square, electrolyte thickness, initial concentration ot Ca(OH)2 Peculiarities of mechanism gave opportunity to change some ideas about interaction of CO2 with pore moisture of solid calcium cilicates.
Mozheiko Yu. M., Storozhuk I. P., Pesetskii S. S.
Preparation and properties of polybuty terephthalate-polytetramethylene oxide block copolymers. pp. 35--40
Summary: Polyblock block-copolymers of polybutylene terephthalate (PBT) and polytetramethylene oxide (PTMO) were synthetized in melt by means of polycondensation. The molecular weight of the PTMO blocks is 1000 and 2000; their concentration in the block-copolymer varied between 10 and 65 wt.%. The effect of the PTMO soft blocks concentration on the physical, chemical and mechanical properties of the block-copolymers is discussed in this paper.
TECHNOLOGIES
Avsiyevich A. M., Spiridonov N. V.
The finishing mechanical treatment features of plasma-sprayed coatings from diffusely alloyed self-fluxing powders on the iron base. pp. 41--44
Summary: The mechanical treatment features of plasma-sprayed coatings from diffusely alloyed self-fluxing powders on the iron base - new kind of materials used for plasma spraying -- are discussed on the paper. The grinding is an optimal technology for finishing mechanical treatment of this coatings. The grinding schedules, that secures the chipping elimination of coating elements and the best roughness of coating surface, have been founded. The minimal allowance value for mechanical treatment, which secures the roughness elimination, and spraying conditions, that secure the minima] roughness of coating after spraying, have been determined.
Vegera A. I., Petrova V. A.
Intensification of oil deparaffinization process by using knitted filtermedia PTTF. pp. 45--51
Summary: The review of optimization methods in oil deparaffinization process and researching results of application knitted filtermedia PTTF for this process is given. It is established that special filtermedia - knitted materials - have shown better technological and economical characteristics according to the oil paraffin removing process.
Vereshchagin M. N., Shepelevich V. G., Ostrikov O. M., Cybrankova S. N.
Influence isochronous and isothermal annealings on structural changes and microhardness well-tried fast of alloy Fe-Cr-Mo-V-B-Si. pp. 52--54
Summary: Influencing isochronous and isothermal annealings on structural changes and microhardness well-tried fast of alloy of a system Fe-Cr-Mo-V-B-Si is studied. Is established, that by critical temperature close by 500 °C. Is rotined, that soak period of alloy Fe-Cr-Mo-V-B-Si at given heating temperature exerts influence on a microhardness and structural changes only on a pioneering stage of an isothermal annealing.
Golovnich A. K.
Features of application information technologies in practice computeraoded design technical systems. pp. 55--58
Summary: The key bases of development ergatic CAD are considered, in which the experience is of the priority automized environment of designing. The difficultly formalizable knowledge and skills of the professional does not allow to create effective computing resources of the engineering analysis. Therefore it is necessary to study possibility of construction the integrated CAD, in which the experience is dissolved in the program shell and becomes her nonseparable part.
Zlotnikov I. I.
Effect of dispersed silicates on thermal processes in polymers. pp. 59--62
Summary: The effect of fine-dispersed silicate fillers on the processes in polymers occurring at heating has been studied, including melting, thermal oxidation and destruction.
Kashtalyan I. A.
Physical parameters of cinematically unstable cutting precess at the turning flexible production modules. pp. 63--67
Summary: The peculiarities of cinematically unstable formation process at the turning flexible production modules are discussed. The results of experimental research of unfixed cutting process parameters influence on power and temperature modes tool firmness are cited.
Kovalevskii A. A., Glukhmanchuk V.V., Tsybulskii V. V., Sorokin V. M.
Research of influence of conditions of deposition on size of a deflection polycrystalline films of germanium. pp. 68--71
Summary: On the basis of study of communication of a deflection of structures Si-SiO2-Si3N4-Ge with conditions of growth polycrystalline films of germanium the ways of decrease of size of a deflection and residual stresses in structures with polycrystalline germanium are offered. With the purpose of reduction of residual stresses in polycrystalline films of germanium is recommended to use thermal or pulse of laser annealing of structures.
Petrovsky B. I.
The choice of structural parameters of mechanized supports for developing Starobinsk potassium deposit. pp. 72--75
Summary: A regularity in distribution of loading on the support over the working area width has been established and a method of determining interaction parameters of the mechanized supports and side strata at developing Starobinsk deposits of potassium salts by the long breakage faces have been determined.
INSTRUMENTS AND TEST METHODS
Belov V. M., Savastenko V. A.
A device for dynamic temperature measurements of spots on frictional contacts of rubbing bodies. pp. 76--79
Summary: A device for dynamic contactless surface temperature measurements has been developed for local heat sources on contacts of rubbing bodies. The device assists in determining linear dimensions of hot spots, temperature distribution over their surfaces and to observe variations in spot dimensions, their location on the friction surface and determine their lifetime.
Vasiliev V. A., Tikhonov A. I.
Economic efficiency of raised accuracy of measurement instruments and tools. pp. 80--82
Summary: An economic estimate is presented of the accuracy of measuring instruments and tools. An interrelation has been established between the measurement accuracy and economic efficiency. A calculation method is proposed to estimate economic efficiency of measurement instruments and devices.
Gubanov V. A., Polyakov A. L., Shcherba V. Ya.
Regularities of mining pressure recovery on potassium stratum bed behind the breakage face in conditions of the third stratum at Starobinsk deposit. pp. 83--87
Summary: As a result of undertaken investigations it has been established that there exist zones of lowered loads (relieving zones) in the end parts of the worked up breakage face. The derived dependence of the relieving zone width upon time passed after termination of breakage works.
Drozdova D. A., Prokopchuk N. R., Abadie Mark J.-M.
The advantages of differential scanning photocalorimetry method in researches of photochemical processes. pp. 88--92
Summary: According to analysis of acrylamide's photoinitiated polymerization the advantages of differential scanning photocalorimetry method (DSP) in investigation of photochemical reactions in comparison with NMR-method were proved The possibilities of DSP-method in researches of processes that occur in compounds under UV-irradiation were described. The possibility of kinetic studies for polyester resin's UV-enring modified by acrylic monomers as well as of calculation basic parameters (reaction constant, activation energy, induction time) of these process was shown.
Yelshina I. A., Abaev G. N., Yelshin A. I.
Determining of a free-water fraction in activated sludge. pp. 93--96
Summary: A method of determining a free-water fraction in activated sludge has been proposed based on laboratory centrifugation results. Calculated data was close to experimental measurements. An algorithm of calculation was developed and may be useful for sludge dewatering processes.
Klimovich L. N.
Linear transducer of resistance strain gauges into sinusoidal signal freguency. pp. 97--99
Summary: The article deals with the analysis of resistance transducers into the frequency of sinusoidal signal and their chief drawbacks are cited. A principal electrical scheme of the new design of the linear transducer of resistance strain gauges into the frequency is shown and its operation principle is described. Experimental results are presented of estimating the major characteristics.
Shcherba V. Ya., Obydenkova T. N.
Determination of parameters of the earth strata movement. pp. 100--103
Summary: Geometrical parameters of the earth strata movement trough have been determined and new in principle methods of estimating the effect of rocks on the earth surface have been developed based on coordinates of a characteristic strata movement trough point.
SCIENTIFIC CHRONICLE
Pesetsky S. S.
Seventh Session of the IAAN Scientific Council for New Materials. pp. 104--107
REVIEWS. p. 108
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