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71.
In branching theory of solutions of nonlinear equations group analysis methods [Ovsyannikov, Group Analysis of Differential Equations (Nauka, Moscow, 1978); Lectures on the Theory of Group Properties of Differential Equations (Novosibirsk University, Novosibirsk, 1966)] give the general approach for the construction of the complete form of branching equation and its subsequent investigation. These methods are applied here to the general situation of Andronov-Hopf bifurcation when there are some multiple semisimple eigenvalues on imaginary axis. (c) 1997 American Institute of Physics. 相似文献
72.
M. K. Gavurin proposed (RZh Mat. 4B383, 1962) an iteration method based on the theory of perturbations for finding the eigenvalues and eigenvectors of linear operators. The method was developed later by F. Kunert (RZh Mat. 5B815, 1968). In the present note, using results of V. A. Trenogin (RZh Mat. 1B706, 1970), this method is extended to problems of the form (A-B)=0.Translated from Matematicheskie Zametki, Vol. 19, No. 1, pp. 105–108, January, 1976. 相似文献
73.
74.
M. Loginov N. Lebovka O. Larue M. Shynkaryk M. Nonus J.-L. Lanoisellé E. Vorobiev 《Journal of membrane science》2010
In the present work the dead-end filtration of Saccharomyces cerevisiae yeast suspensions disrupted by high voltage electrical discharges (HVED treatment) was investigated. The efficiency of disruption was evaluated using conductivity disintegration index of suspension Z (Z = 0–1) and absorbance spectra of supernatant solutions. The electronic microscopy study, particle sizing and measuring of ζ-potential and turbidity were used to characterize variation of the colloidal properties of a yeast suspension during disruption. The HVED treatment was found to cause an effective disruption of yeast cells and extraction of intracellular proteins and other bio-products. The study of filtration revealed suspension filterability deterioration after disruption. It was shown that filtration behaviour of the HVED-processed suspensions was governed by cake formation, the filtrate volume decreased and the cake resistance increased with increase of Z. For high levels of disruption (Z > 0.99), filtration was governed by membrane fouling. The optimal dosage of polycationic flocculant promoted the formation of flocks and accelerated filtration. However, selected flocculant (poly(diallyldimethylammonium chloride)) provoked binding of bio-product and was inappropriate for using as an agent enhancing extraction from disrupted yeast cells. 相似文献
75.
T. V. Voskoboinikov M. V. Vishnetskaya A. Yu. Loginov B. V. Romanovskii 《Reaction Kinetics and Catalysis Letters》1989,39(2):387-392
Active centers of SiO2 formed during thermolysis of methoxylated silica surface has been studied by ESR. Several types of coordinatively unsaturated silicon atoms, which differ in location and number but show similar reactivity toward various adsorbates, have been found.
, . - , , , H2, CO, O2.相似文献
76.
D. A. Loginov D. V. Muratov Z. A. Starikova P. V. Petrovskii A. R. Kudinov 《Russian Chemical Bulletin》2006,55(9):1581-1584
The reaction of the (borole)rhodium iodide complex [(η-C4H4BPh)RhI]4 with Cp*Li afforded the sandwich compound Cp*Rh(η-C4H4BPh) (4). The reactions of compound 4 with the solvated complexes [Cp*M(MeNO2)3]2+(BF
4
−
)2 gave triple-decker cationic complexes with the central borole ligand [Cp*Rh(η-η5:η5-C4H4BPh)MCp*]2+(BF
4
−
)2 (M = Rh (5) or Ir (7)). The structure of complex 4 was established by X-ray diffraction.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 9, pp. 1525–1527, September, 2006. 相似文献
77.
A. V. Loginov 《Zeitschrift für Physik D Atoms, Molecules and Clusters》1997,41(4):245-249
Experimental excimer continua emitted by electric discharge plasma of krypton and xenon were interpreted as the 1 Σ u + → 1 Σ g + bound-free transitions. The relative populations of the lower vibrational levels of the 1 Σ u + state were derived fitting experimental spectra with the theoretical ones. 相似文献
78.
Will Presented short feature PTFE to product and Russian Producers PTFE. They are shown advantage of chemical protection of the equipment and pipe line PTFE, ways of chemical protection and order of the granting PTFE services by company “Ninth Element” Ltd. 相似文献
79.
S. V. Loginov I. A. Dain V. B. Rybakov E. N. Ofitserov D. A. Gordeev P. A. Storozhenko 《Crystallography Reports》2018,63(1):58-64
Succinic acid salts-tris(2-hydroxyethyl)ammonium succinate (C6H16NO3) 2 + C4H4O 4 2? (monoclinic crystals, sp. gr. P21/c, Z = 4) and tris(2-hydroxyethyl)ammonium hydrogen succinate (C6H16NO3)+C4H5O 4 ? (monoclinic crystals, sp. gr. P21/c, Z = 4)—were synthesized and structurally characterized. The specific features of the three-dimensional structures of tris(2-hydroxyethyl)ammonium salts of succinic acid are considered. The role of interionic electrostatic interactions in the structure stabilization and the formation of products of composition 1: 1 and 1: 2 derived from succinic acid is discussed. 相似文献
80.