Doklady of the Academy of Sciences of Belarus, 1996, Vol.40, No.1
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Doklady of the Academy of Sciences of Belarus, 1996, Vol.40, No.1

DOKLADY OF THE ACADEMY OF SCIENCES OF BELARUS
(Doklady Akademii Nauk Belarusi)Published by The Navuka i Tekhnika Publishing House, Minsk, Republic of Belarus

CONTENTS
MATHEMATICS
Likhoded N.A.
A new method for the construction of algorithm parallel forms. pp. 58
Summary: A formalized method for the construction of fixedsize parallel forms for algorithms presented by dependence graphs is proposed. The parallel forms are presented by computation graphs which are the models of twodimensional array processors without interconnections. The problem of the minimization of the height of the parallel forms is considered.
Yemelichev V.A., Kravtsov M.K., Podkopaev D.P.
On radius of quasistability of multicriterial trajectorial problem. pp. 912
Summary: A new type of stability of multicriterial trajectorial problems of discrete optimization to the "small" variations of objective functions has been investigated. The old Pareto optima are saved and the new ones may appear under the consideration of this type of stability.
Kilbas A.A.
Solution of nonlinear AbelVolterra integral equation. pp. 1317
Summary: The uniqueness problem for the solution of one nonlinear AbelVolterra integral equation is studied. Asymptotics of this solution near zero is found provided that free term has special power asymptotic behavior near zero. The conditions to the asymptotic solution to be exact solution of the equation are given.
Yegorov A.A.
On the class of difference schemes for solution of nonlinear parabolic equations on nonorthogonal grids. pp. 1821
Summary: Economic iterative difference schemes for the solution of multidimensional nonlinear heat conduction equation in domains having curveline boundary are proposed.
Shcheglov V.A.
Stability coefficient conditions for linear delay differential equations. pp. 2226
Summary: The aim of the paper is to give new stability and asymptotical stability conditions for x(t) = a(t)x(t)+b(t)x(tr(t)) where a(t) and b(t) may change a sign, be unbounded as well as r(f) may also be unbounded.
Laptinsky V.N.
On representation of twoperiodic solutions of linear partial hyperbolic systems. pp. 2731
Summary: The algorithm for the construction of twoperiodic solutions of linear partial hyperbolic systems is worked out.
Minyuk S.A.
Zerocontrollability in Banach space of linear normal systems in the case of operator with finite spectrum. pp. 3236
Summary: The paper deals with theorems on local and global zerocontrollability in Banach space of linear normal systems in the case of operators A with finite spectrum given restrictions to control.
Tuzikov A.V., Margolin G.L., Grenov A.I.
Convex polygon symmetrization and decomposition via perimetric measure. pp. 3741
Summary: Efficient algorithms for the decomposition as well as for the determination of central, rotation, and reflection symmetry measures of convex polygons are proposed. The algorithms are based on a special representation and corresponding symmetrization transformations of convex polygons.
PHYSICS
Burakov V.S., Raikov S.N.
Investigation of spectral line profiles by intracavity laser spectroscopy method. pp. 4245
Summary: The experimental and theoretical profiles of atomic and ionic absorption lines, obtained by intracavity laser spectroscopy (ICLS) with broadband tunable dye lasers, are studied. The following objects, to be probed in laser cavity, have been chosen: plasmas plume, formed under action of laser radiation on a surface of aluminium target; pulsed electric discharge in helium or xenon; vapourgas medium of thermal atomizer with impurities of barium, caesium and thallium, introduced into a furnace. The shape of line profile, its width, the shift of line centre, resolved line structure are investigated. The efficiency of the ICLS is demonstrated for diagnostics of plasma with a prevalence of different mechanisms of spectral line broadening.
Soika A.K., Boiko B.B., Vashkevich I.M.
Production of quasistatic strong pulsed magnetic fields by the use of an automatic plasma crowbar. pp. 4649
Summary: The paper describes a new method for generating quasistatic strong pulsed magnetic fields with 0.1 s pulse duration in discharge oscillator circuits based on the radial expansion of spark gas discharge channels (a selfmaintained plasma crowbar).
Bogush A.A.
On qdeformation of group vectorparameters. pp. 5054
Summary: It is shown that in the framework of the threedimensional vector parametrization of the classical and quantum groups the transition SL(2.C) (SU(2), SO(3.R)) ® SL_{q}(2.C) (SU_{q}(2), SO_{q}(3.R)) may be reduced to the simple qdeformation of the corresponding vectorparameters.
Maskevich S.A., Sveklo I.F., Yanul A.I., Nabiev I.R., Kivach L.N., Sviridenok A.I.
Longrange action of surface enhanced Raman scattering and atomic force microscopy of annealed silver films. pp. 5559
Summary: The analysis of the influence of thin silver film surface roughness on the parameters of resonant SERS rodamine R6G at different distances to molecule surface has been performed. Annealing was shown to lead to formation of near to uniform island structure films that significantly increases longrange action of resonant SERS.
Novikov V.P., Dymont V.P.
Electrochemical method for synthesis of diamondlike films. pp. 6063
Summary: The carbon films of different structure types (including diamondlike) were synthesized by electrochemical method.
CHEMISTRY
Kuvaeva Z.I., Vodopyanova L.A., Soldatov V.S.
Regularities the transport of silver ion through the strong acid liquid membrane. pp. 6467
Summary: The Ag^{+} mass transport through the liquid membrane impregnated by strong acid was studied. It was shown perspectivity of using strong acid carriers for recovery valuable metals from dilute solutions.
Potkin V.I., Zapolsky V.A., Kaberdin R.V.
Nitration of 2Hpentachloro1,3butadiene. pp. 6871
Summary: The 2Hpentachloro1,3butadiene nitration by mixture of HNO_{3} and H_{2}SO_{4} (or H_{3}PO_{4}) has been investigated. 2Nitrosubstituted pentachlorobutadiene has been obtained with yield of 5860% under optimum conditions [HNO_{3}:H_{2}SO_{4} (or H_{3}PO_{4})=10:13, t = 95100^{o}C]. The trichloroacroleine and trichloroacrylic acid were the byproducts of nitration process. It has been found, that nitrochlorination and chlorination reactions of initial diene are proceeding when the mixture HNO_{3}:H_{2}SO_{4}=1:2 is used. The scheme of byproducts formation is proposed.
BIOLOGY
Kabanova S.N., Kabashnikova L.F., Chaika M.T., Khotyleva L.V.
Characteristic properties of genetic determination of pigment indices in winter hexaploid triticale. pp. 7276
Summary: Winter hexaploid triticale forms distinctive on morphogenesis, pigment content and crop productivity, and their hybrids F_{1} and F_{2} were studied. A reciprocal effect on inheritance of chlorophyll b content per unit of leaf area and pigment amount in the lightharvesting complex of photosystem II was observed. Maximum variation range in F_{2} generation was detected for the chlorophyll b content and chlorophyll a:b ratio.
Sidorovich E.A., Kutas E.N., Brel N.G.
In vitro regeneration from leaf explants of cowberries (Vaccinium vitisidaea). pp. 7780
Summary: Regeneration of Vaccinium vitisidaea L. introduced varieties from leaf tissue in vitro is discussed. The approach designed for direct stem regeneration from leaf mesophyllic cells excludes the possibility for pheno and genotypic variability contrary to those occurring during callus cultivation. It also allows maintenance of variety quality that is extremely important during clonal microreproduction.
Ipatiey V.A., Dvornik A.M., Zhuchenko T.A.
On modeling and prediction of ^{137}Cs migration in hydromorphic soils of forest ecosystems in Belarusian Polesie. pp. 8184
Summary: On the basis of model calculation ^{137}Cs redistribution for the nearest and remote periods has been obtained. The estimates obtained with a great proportion of mobile forms of ^{137}Cs presence in peats taken into account indicate a possibility of the secondary radiation contamination of freshwater through groundwater.
Rudkovskaya E.E., Sokolik A.I., Yurin V.M.
Change in transport properties of immobilized cell plasmalemma of algae under alginate effect. pp. 8589
Summary: The influence of one of polysaccharides used for cell immobilization  alginate  on the transport characteristics of an algae cell plasmalemma was investigated. Immobilization of microalgae Chlorella was shown to result in 2.5fold increase in the nitrate uptake rate in cell with polysaccharide playing a decisive role. In model experiments on Characea algae cells Nitella a number of alginate effects was revealed, an essential increase in unselective conductance of plasmalemma  ionic leakage being a basic one. The assumption was made that alginate effects are due to inclusion of its lowmolecular fractions in membrane that finally results in loosening lipid bilayer causing the observed effects.
Strumilo E.S., Rozhko A.V., Vinogradov V.V.
Sensitivity of mitochondrial NADPspecific isocitrate dehydrogenase (ICDH) from rabbit adrenals to Ca^{2+}. pp. 9092
Summary: Free Ca^{2+} and not bound to calmodulin was shown to be of regulatory significance for mitochondrial NADPICDH. Physiological micromolecular Ca^{2+} concentrations influenced the affinity of NADPICDH to substratum.
EARTH SCIENCES
Lukashev V.K., Anoshko Ya.I., Sivchik V.V., Khavryuk N.N.
Nickel distribution in soils of natural and urbanized landscapes in Belarus. pp. 9397
Summary: Against a background of low regional percent abundance of nickel for soddy  podzolic and swampy soils in Belarus an increase in the content of this element in soils of towns (up to 16 times) and soil depletion of personal plots in countryside (2,2fold) are observed that can affect people's health.
Azhgirevich L.F., Kruchek S.A., Levy M.G., Obukhovskaya T.G., Streltsova G.D.
Oil shales in deposits of Rechitsa River horizon of the Upper Devonian in Zhlobin saddle. pp. 98101
Summary: Oil shales have been investigated within Zhlobin area of diatremes occurrence. They are represented by three genetic types: 1) oil shales with a clayey component; 2) oil shales with a clayey  carbonate mineral component; 3) oil shales with carbonate (calcite) mineral component. The shales were formed in caldera lakes that preceded Rechitsa sea transgression.
Aksamentova N.V.
Magmatism and tectonic position of the Early Proterozoic OsnitskMikashevichi volcanicplutonic belt. pp. 102107
Summary: Geological correlations and petrogeochemical features of magmatic rocks of the Early Proterozoic OsnitskMikashevichi belt are described. Intracontinental position and long manystage development of this belt under complicated geodynamic conditions are substantiated.
Vysotsky E.A., Petrova N.S.
Characteristic properties of carnallite deposit structure and composition of the Pripyat River flexure. pp. 108113
Summary: In the Upper Famennian saltbearing formation twelve carnallite deposits, abundant in the west and the north of the Pripyat River depression have been revealed. Close paragenesis of carnallite rocks and halopelite was typical. Carnallite crystallization took place, as a rule, in movable and intensively deflecting sites of terrain in the evaporitic basin bed.
Zhoglo V.G., Pletnev A.A.
Estimation of aquiclude filtration properties for forecasting underground water quality near a source of pollution. pp. 114117
Summary: A new effective method of assessment of aquiclude filtration properties in bedded stationary underground water flow is suggested in the article.
TECHNICAL SCIENCES
Yashcheritsyn P.I., Shipko A.A., Kheifets M.L., Popok N.N.
Improvement of production systems on the basis of creating conditions for selforganization of technological processes and objects. pp. 118121
Summary: The paper deals with production system development that provides complex automatization, the stages of the production analysis being proposed for the purpose of creating conditions for selforganization of production objects and processes.
Kuzei A.M.
Interaction in the AlCuSn system under superfast cooling. pp. 122125
Summary: The methods of calorimetry, electron microscopy were used to study an interaction which occurs in the Al8Cu3Sn alloy produced by a centrifugal alloy atomization. It is established that a free tin is not present in the alloy. The formation of threecomponent compounds in Alrich region is possible due to changing a mechanism of an interatomic interaction in a system which has an excess free energy.
Migun N.P., Azuni M.A.
Characteristic properties of mass transfer in lineend conic immersed capillaries. pp. 126129
Summary: The phenomenon of twoway filling of conical capillaries with water bidistillate and ethanol has been studied experimentally. Some new peculiarities of this phenomenon clearing up its physical nature were obtained. It was established that under some conditions the phenomenon was accompanied by air bubble displacement towards the channel exit.
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