SCIENTIFIC ABSTRACT KHAIMOV, Z.S. - KHAIN, V.YA.

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CIA-RDP86-00513R000721710003-0
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December 31, 1967
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SCIENTIFIC ABSTRACT
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On Use of Portable P~raaida for S/00 60/000/'C-_-, -4/1-i24 Points of Second- and Third-order Triangulation B007YB123 truck of the type ZIS-5. Angular measurements made from the:3r, pyramids in 1959 proved to be as exact as observations made from signals. The best observers are mentionedt Comrade V. N. Sudarikov and V. D. Madakalov. The pyramidg described here are far more useful than simple signals. This fact is illustrated by a calculation of savings. At the same time the necessary modifications of the construction of those outer pyramids are pointed out, and a few recommendations are given. There are 3 figures and 1 table. Card 2/1, KRAIMDV, Z.S., assistent Analysis of triangulation data by methods of mathematical statistics. Izv. vys. ucheb. zav.; geod. i aerof. no.3: 37-52 '63. (MRA 17:1) 1. Moskovskiy institut inzhenerov geodezii, aerdfotos"yemki i kartografii. (Y) ( -V- T F Ft -)-E USSR / Mechanical Properties of Crystals and Polycrystallic E-9 Compounds. Ab5 Jour Ref Zhur - Fizika, No 4, 1957, No 94og Author Aleksandrov, K.S., Khaimoy-Mallkov, V,Ya. "I Inst Institute of Cryat&Uo-g-r-aTEv-,-Xc-aU~.my~of Sciences USSR Title Rotation of Plane of Polarization of Elastic Shear Waves Orig Pub : Kristallografiya, 1956, 1, No 3P 373-374 Abstract : In a crystal specimen of rock salt, appro)d tely 100 mm long, cut in the E110] direction and twisted about this direction by 90P, there was sent a short t1trasonic pulse of shear wa- ves at a frequency of 1.67 Mc. The receiver of a Y-section from the other end of the specimen received the ultrasonic vibrations passing through the crystal, which after amplifi- cation were applied to the plates of an oscillograph. It was shown that the twisted crystal of rock salt rotates the plane of oscillations of the particles '-n the shear wave (plane of polarization) by an angle that equals approidma- Card 1/2 USSR / Mechanical Properties of Crystals and Polycrystalic E-9 Compounds. Abs Jour : Ref Zhur - Fizika, No 4, 1957, No 94o9 Abstract : tely the angle of twist of the specimen. This phenomenon was observed only for those directions of propagation twist axis), where there is a difference in the velocities of the two shear waves and where the directions of their displace- ment are fixed. Similar investigations with rock-salt crys- tals, beaten out along the cleavages, did not produce the above effect. Card 2/2 19 11)12 elab v, - ";~) // /' /~, e* ~/ 1"" ~ w I AKULRNDr, Ye.M.; BAGDASAROV, Kh.S.; KHAIMOV-RALIKOV. Y.Yr-, _ Effect of mechanical stirring and ultrasonic vibrAtions on the . -1 process of adsorption of Impurities by monocrystmir. Kristpllo- graftia 2 n0-1:197-199 '57. . (MW 1(1:7) 1. Institut kristallografti Akademii nauk SSSR. (Grystmls--Growth) V, USSR/Physical Chemistry - Crystals. B-,'; Abs Jour : Referat Zhur - Khimiya, No 1, 1958, 272 Author : Kh.S. Bagdasarov, V.Ya. Khaimov-Mal'kov. Inst e- Title Some Experimental Data ConcerninG Formation Natwe of Etching Figures in Ultrasonic Field. Orig Pub Kristallografiya, ?Qj7, 2, No 2, 309-3010 Abstract Whiel studying the ca ..'0. . A,.e formation of etching fi- gures on the NaCl cr~ ur.ace during ultrasonic irra- diation, the authors ~-.,& .,rAi a sharp drop of the tensil strength of NaCl crystals in solution (aic!) at an ultra- sonic irradiation of the frequency of 22 kilocycles, and the absence of this effect, if the frequency had been 717 kilocycles. Both these phenomena are explained by the formation of microfissures, called cavitation, on the crystal surface, which serve as "germs" of etching fi,-ures. Card 1/1 AUTHOR: Khaimov-!jal'kov V.Ya. SOV/-/0-3-4-14/'26 ------------- TITIE: On the Question of the Growth of Crystals in Porous Media (K Yoprosu o roste kristalloy v poristykh sredakh) PERIODICAL: Kristallogafiya, 1958, Vol 3, Nr 47 pp 488-493 (USSR) ABSTRACT: The growth of crystals in porous media is of,,ary great practical importance in, for example, the freezing of soil, the formation of gypsum in clay, the setting of cement, etc. The crystallisation pressure for growth from solution is given by: V = kT v__l log t/Co andft,om a melt by: -W = dT Q/ToV where Q is the heat of or7stallisation, T 0 is the melting point, dT is the super-cooling, CIC 0 is the supersaturation, v is the specific volume. These derive from Thomson's expression. Experiments were Cardl/3 carried out in silica gel where the pore size is about SOV/70-3-4-14/26 On the Question of the Growth of Crystals in Porous Media 4. 10-7 c. Chrome alum arlstals were grown in the gel and exainination showed that the crystals do not ac*,6,ually penetrate the gel; secondly, that the crystal13 push the gel away, straining it and sometimes producing cracks and, thirdly, that these cracks indicate the maximum strains to occur at the points of the crystals. Pyramidal forms of the crystals tend to predominate. Na--! crystals growing on the surface of a gel were also examinett. Thej appeared to be columnar with piles of platy crystals growing mushroomwise on their tops. The crystallisation pressure was measured. It is concluded that the growth of crystals in a porous medium is satisfactorily explained by the formulae quoted. Acknowledgments to Academician A.V. Shubnikov, N.N.Sheftall Oard 2/3 SOMO-3-4-14,126 On the Question of the Growth of Crystals in Porous Media. and to A.A. Chernov. There are 14 figures and 10 references, 8 of which are Soviet and 2 German. ASSOCIATION: Institut kristallografii AN SSSR (Institute of Crystallography of the Ac.Sc.USSR) SUBMITTED: April 25, 1958 Card 3/3 )a 'ALIF , V.ya., Cand Phys Math SCi -- (diSs) "Study , . I KRAII,J011-11, OV 4-0, - Ij \! iid- _- ' - - - ---i- of crystallization pressure. (pressure of tine crystal,#, the phenonenon of self-purifying)-" mos, 19593 12" ',)P Unst of Crystallography c;f Acad Sci USSR). 150 cO.'es (KL 35-593 112) - 11 - 14 0- , 73o 0 I r; I ~ ,I J _0 - 3/058/62/001)/005/069/119 A061/A101 AUTHOR: Khaimov-Mallkov,_V. Ya. TITIZ: A contribution to the thermodynamics of crystallization pressure PERIODICAL: fleferativnyy zhurnal, Fizika, no. 5, 1962, 10, abstract 5E83 (V ob. "Rost kristallov. T. 2", Mosoow, AN SSSR, 1959, 5 - 16) =T-. Conclusions from and an evaluation of the thermodynamic conditions of phase transition accompanied by the repulsion of foreign particles due to crys- tallization pressure are presented. A thermodynamic analysis of phase-transfor- mation has been made on models to which single-phase preszure has been appli.~d ad- ditionally. Prom the conditions of equilibrium in sIngle-component sy6tems it iz concluded that crystallizatiori pressure must rise with the degree of' supercooling, practically regardless of the symbol of the repelling crystal face. Under othar- wise equal conditions, crystals subjected to elastic stresses displev a melting temperature lower thLn that of unstressed crystals. However, the change of this temperature is independent of the sign of elastic deformation. In dilute solu- tions, crystallization pressure is independent of the properties of both the sol- Card 1VP A contribution to the ... S/058/6Z/O()0/005/06.9/119 A061/A101 vent and the substance. Crystallization pressure rises with supersaturation. It provides an explanation of the repulsion of foreign particles from the faces of a growing single crystal. A. M-akarevich [Abstracter's note: Complete translation] III Card 2/2 S/058/6P/000/009/017/009 A006/A101 AUTHOR: Khaimov-Mallkov, V. Ya. TITM: On the problem of experimentally determining the magnitude of crystallization pressure PEMODICAL.- Referativnyy zhurnal, Fizika, no. 9, 1962, 8, abstract SE59 (In collection: "Host'kris.tallov. T. 2", Moscow, AN S~ZR, 1959, 17 - 25) Coe TEXT: The author reproduced experiments to determine crystallization pressure with the aid of various methods, for the purpose of discovering the causes of sharp discrepancies in experimental results obtained preViousiy. The conclusion is drawn that experiments made by the Correi..; method (G. Correns, W. Stbinborn, '1Z. Kristallogr.11, 1939, v. A101, 117) yield correct results,in respect to the order of magnitude. The magnitude of crystallization pre5sure can not be evaluated from the capture or repulsion of obstacles by growing crys- tals,since in these phenomena conditions of crystal,feed play the decisive part. - (Abstracter's notel Complete translation] Yu. Krishtal Card 1/1 SQ170-4-1-20126 AtTHOR: Khaiqqy7Mq1'.koY.-.V..,'Ta. TITLE: On the Question of the Growth of Crystals From Systems Containing Impurities (K voprosu o roste kristallov iz sistem7 soderzhashchikh primesi) PERIODICAL: Kristallografiya, 1959, Vol 4, Nr 1, pp 114 - 118 (USSR) ABSTRACT. It is shown experimentally and theoretically that the action of impurities on the change of crystallisation parameters can lead to the operation of a single-phase (crystallisation) pressure equal in magnitude to the osmotic pressure which these impurities set up. According to Raoult's law, the change in boillng or melting point of a solution containing impurities is given by: 16T ~ kT 2(C I -CII )/q 0 For the growth of crystals it can be put into the form: ~e4T =-kT2(C I - CII )/q i where- Cardl/4 SOV/70-4-1-20/26 On the question of the Grovith of Crystals From Systems Containing Impurities CTI is the concentraticn of impurities in the i-th I growth pyramid; q is the heat of crystallisation; ,A~T is the change in the melting point; T is the melting point of the solvent, k is Boltzmann's constant and 01 and 0 11 are the concentrations of imDuritir in the liquid and solid phases. The crystallisation of alum in the presence of a blue dye (Col.Ind. ql-8) has been studied. Octahedral growth pyramids contain almost no impurities and remain transparent while the cube-fa!,p pyramids have substantially the same concentration of dye as the solution. A pressure can be defined by kT (C VII Card2/4 SOV/70-4-1-20/26 On the Question of the Growth of Crystals From Systems Containing Impurities for an osmotic pressure across a partition whefe vii is the molecular volume of the pure solvent. If there is a pure solvent on one side then: CkT/v By a thermo-dynamic argument: AP - kT(OI - CII)/(vi - vIi which is to be compared with Raoult's law. This was experimentally verified by measuring the rate of growth of alq crystals at various temperatures (from 1?.?5 - 18.55 0). The osmotic pressure of the dye was actually measured by the pressure exerted on a mirror of a Michaelson interferometer which caused a slight displacement of the mirror, It is concluded that the p:ressure should be con- sidered as real. AcknowledgmentG are made to Academician A.V. Shubnikov and Doctor N.N. Sheftall for their advice and to A.A. Fotchenkov and Kh.S. Bagdasarov for their help Card3/4 in experiments. SOV/70-4-1-20/26 .0n ~he Question of the Growth of Crystals From Systems Containing Impurities There are two tables and 6 Soviet references. ASSOCIATION: Institut kristallografii AN SSSR (Instit--,te of Crystallography of the Ac.Sc.. USSR) SUBMITTED. October 13, 1-958 Card 4/4 '-)4.7100 771-15 sov/~(O-4-6-16/3i AUTHORS: Perl'shteyn, V. A. TITLE: c)ncerning the Effect of yarnace Temperature Gradient ot, the Distribution of an Impurity In a Growing Crystal PERIODICAL: Kristallografiya, 1959, Vol 4, Nr 6, pp 9011-907 (USSR) ABSTRACT: This work was presented at the second conference on scintillators in 1957, at Kharlicov. If a molten cylindrical sam 1e is cooled at one end (directed crystallization5, a divisive effect is possible leading to the concentration of the impurity at one or the other end. The concentration CS of the impurity along a length Zo of the crystal may be represented by Eq. (1) If the migration is by con-- vection and by hq. (2) If by diffusion. Card 1/8 Concerning the Effect of Furnace Temperature 77115 'Gradient on the Distribution of an Impurity sov/70-4-6-16/31 in a Growing Crystal Z, C. kc"( 7; C,=Xt Coll +or[jrr-(t-2k)oxpj-1jk(1-k)-Jx x (1 +orf 1(i -2k) (2) Here Co is the initial concentration of.the impurity; k is the coefficient of trapping, equal to CB/Cz 0 (CZ 0being the concentration of the impurity at point Z.); L. is the crystal's length; -C - VZOAD; V is the rate of crystallizationi and D lo the dif- fusion coefficient. Figuro I represents the above rela'tions for k