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1.
Инвентарный номер: нет.
   
   B 93

    Bulanov, N. V.
    Peculiarities of boiling of emulsions with a low-boiling disperse phase [Electronic resource] / N. V. Bulanov, B. M. Gasanov // International Journal of Heat and Mass Transfer. - 2008. - Vol. 51, № 7-8. - P1628-1632
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
BOILING -- NUCLEATION SITE -- HEAT TRAHSFER -- ACTIVATION OF NUCLEATION SITES -- SUPERHEATED LIQUIDS
Аннотация: The heat transfer from thin wires to emulsions with a disperse phase formed from a liquid whose boiling temperature is much lower than the boiling temperature of the disperse medium was investigated. Experiments were conducted at atmospheric pressure on vertical and horizontal wires from 50 to 100 ?m in diameter with n-pentane/glycerine, diethyl ether/water, and freon-113/water and water/oil emulsions.??It was possible to describe the experimental data obtained by one analytical dependence Nu = AArPrM?1[1 ? exp(?JVt)]. The dependence presented was obtained from the proposed model of the chain branched activation of boiling centers in droplets of a superheated liquid. In this case the coefficient J acquires the meaning of the activation rate of these centers.??

\\\\Expert2\\NBO\\International Journal of Heat and Mass Transfer\\2008, v.51, p.1628.pdf
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2.
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   B 93

    Bulanov, N. V.
    Characteristic features of the boiling of emulsions having a low-boiling dispersed phase [Electronic resource] / N. V. Bulanov, B. M. Gasanov // Journal of Engineering Physics and Thermophysics. - 2006. - Vol. 79, № 6. - P1130-1133
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
BOILING
Аннотация: The results of investigation of heat transfer from thin wires to a boiling emulsion, the dispersed phase of which is formed from a liquid with a boiling temperature much lower than the boiling temperature of the dispersion medium, are presented. Two variants of boiling of such an emulsion are possible: boiling of the dispersed phase alone and simultaneous boiling of the dispersed phase and dispersion medium. In the present work, only the first variant has been studied; it is distinguished by the following most important features: high superheat of the dispersed-phase droplets ?Tsup of the emulsion and a wide temperature range of bubble boiling (50–200°C). For conventional heat carriers (pure liquids and solutions), the value of ?Tsup does not exceed 1–10°C, with the bubble-boiling interval lying within the range from 5 to 20°C.

\\\\Expert2\\NBO\\Journal of Engineering Physics and Thermophysics\\2006, v.79, N 6, P.1130.pdf
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3.
Инвентарный номер: нет.
   
   S 66

    Skripov, V. P.
    Kinetic aspect of the life of tensile specimens: A comparison of two approaches [Текст] / V. P. Skripov, V. E. Vinogradov // Journal of Applied Mechanics and Technical Physics. - 2005. - Vol. 46, № 5. - С. 697-701
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
KINETICS ASPECTS
Аннотация: This paper considers two approaches to estimating the life of specimens: kinetic strength theory and homogeneous nucleation theory. Using aluminum as an example, it is shown that homogeneous nucleation theory overestimates the real life of tensile metal specimens by two order of magnitude and gives values close to the theoretical strength of metals. The use of experimental data on the lifetime of a superheated and stretched liquid (hexane) allows one to couple both approaches taking into account the time scale of occurrence of metastability.

\\\\Expert2\\NBO\\Journal of Applied Mechanics and Technical Physics\\2005, v. 46, p.697.pdf
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4.
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   B 74

    Boltachev, G. Sh.
    Influence of the space charge on the configuration of conical spikes on a liquid-metal surface [Текст] / G. Sh. Boltachev, N. M. Zubarev // Europhysics Letters. - 2006. - Vol. 76, № 1. - С. 36-41
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
METAL SURFACE
Аннотация: The influence of the space charge of ions evaporated from the surface of a conical spike that develops on a liquid-metal anode on the spike shape has been studied theoretically. A possibility of the self-similar reduction of the equations that govern the space distributions of the electric field, ion velocity field, and space charge density to a system of ordinary differential equations has been revealed. Its solution, which is compatible with the balance condition for the capillary and electrostatic forces at a free liquid surface, has allowed us to obtain the current-voltage characteristic for a liquid-metal ion source and the current dependence of the cone angle. An increase in emission current leads to a monotonic decrease of the cone angle, which agrees with the available experimental data.

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5.
Инвентарный номер: нет.
   
   B 74

    Boltachev, G. Sh.
    Surface tension at a weakly curved liquid-gas interface [Текст] / G. Sh. Boltachev, V. G. Baidakov // Zhurnal Fizicheskoi Khimii. - 2004. - Vol. 78, № 9. - С. 1576-1583
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
LIQUID-GAS

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6.
Инвентарный номер: нет.
   
   B 16

    Baidakov, V. G.
    Extended version of the Van der Waals capillarity theory [Electronic resource] / V. G. Baidakov, G. Sh. Boltachev // Journal of Chemical Physics. - 2004. - Vol. 121, № 17. - P8594-8601
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
VAN-DER-WAALS CHAIN-MOLECULE FLUID
Аннотация: An extended version of the van der Waals capillarity theory describing the liguid-vapor interface in the temperature range from the triple to the critical point is suggested. A model functional of thermodynamic potential for a two-phase Lennard-Jones system taking into account the effect of the highest degree terms of gradient expansion has been constructed. The identity of the thermodynamic and the mechanical definition of Tolman’s length has been proved in the framework of the adopted form of functional. The properties of nuclei of the liquid and the vapor phase are described. The paper determines: the work of formation of a nucleus, density profiles, size dependences of the surface tension, and the parameter ? in the Gibbs-Tolman-Koenig-Buff equation.© 2004 American Institute of Physics.

\\\\Expert2\\NBO\\Journal of Chemical Physics\\2004, v.121, p.8594, V. G. Baidakov.pdf
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7.
Инвентарный номер: нет.
   
   B 74

    Boltachev, G. Sh.
    Space charge influence on the angle of conical spikes developing on a liquid-metal anode [Electronic resource] / G. Sh. Boltachev, N. M. Zubarev, O. V. Zubareva // Physical Review E: Statistical, Nonlinear, and Soft Matter Physics. - 2008. - Vol. 77, № 5-2. - P056607/1-056607/10
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
ARGON
Аннотация: The influence of the space charge of ions emitted from the surface of a conical spike on its shape has been studied. The problem of the calculation of the spatial distributions of the electric field, ion velocity field, and the space charge density near the cone tip has been reduced to the analysis of a system of ordinary differential equations. As a result of numerical solution of these equations, the criterion for the balance of the capillary and electrostatic forces on the conic surface of a liquid-metal anode has been determined. It has allowed us to relate the electrical current flowing through the system, the applied potential difference, and the cone angle. We have compared the results of our calculations with available experimental data concerning emission from the surface of pure liquid gallium, indium, tin, and some liquid alloys, such as Au+Si, Co+Ge, and Au+Ge. On the basis of the proposed model, explanations have been given for a number of specific features of the emissive behavior of different systems.

\\\\Expert2\\NBO\\Physical Review E\\2008, v.77, N 5, p.056607.pdf
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8.
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   C 74

   
    Computer study of physical properties of silicon nanostructures [Текст] / A. E. Galashev, I. A. Izmodenov, A. N. Novruzov, O. A. Novruzova // Semiconductors. - 2007. - Vol. 41, № 2. - С. 190-196
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
PHYSICAL PROPERTIES
Аннотация: The method of molecular dynamics is applied to the study of variations in the physical properties of vitreous and amorphous silicon nanoparticles when heated from 300 to 1700 K. The nanoparticles consist of 300, 400, and 500 atoms. The energy and the average length of the Si-Si bond are calculated, and the average number of bonds per atom is determined. Thermally induced strains tend to change the distribution of the excess potential energy among the concentric layers in the nanoparticles. It is shown that, energetically, the most preferential layer is the middle spherical layer of the “warm” nanoparticle. The temperature behavior of the radial and tangential components of the atomic mobility coefficient in the concentric layers is considered. It is established that there is a liquid layer at the nanoparticle surface in the vicinity of the transition to melting. The vitrified Sin nanoparticles are kinetically more stable than the similar-sized amorphous particles.

\\\\Expert2\\NBO\\Semiconductors (ФТП)\\2007, v.41, N 2, p.190.pdf
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9.
Инвентарный номер: нет.
   
   N 64

    Nikitin, E. D.
    Critical Temperatures and Pressures of 12 Phthalates Using the Pulse-Heating Method [Текст] / E. D. Nikitin, A. P. Popov, Yu. G. Yatluk // Journal of Chemical & Engineering Data. - 2006. - Vol. 51, № 4. - С. 1326-1330
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
CRITICAL TEMPERATURES
Аннотация: The critical temperatures and pressures of phthalates with the straight side alkyl chains C6H4?1,2-[COO(CH2)nH]2 (n is from 1 to 11) as well as bis(2-ethylhexyl) phthalate have been measured. No literature data are available for the critical properties of phthalates. Since phthalates decompose at temperatures well below their critical temperatures, the method of pulse heating of a wire probe immersed into the liquid under study has been used. The method minimizes the effect of thermal decomposition because residence times are only from (0.035 to 1) ms. The experimental critical properties of phthalates have been compared with the values calculated using the group-contribution methods by Constantinou and Gani and Marrero and Gani. ??

\\\\Expert2\\NBO\\Journal of Chemical and Engineering Data\\2006, v.51, p.1326.pdf
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10.
Инвентарный номер: нет.
   
   N 64

    Nikitin, E. D.
    Critical Pressures and Temperatures of n-Diaminoalkanes (C2 to C12) [Текст] / E. D. Nikitin, A. P. Popov, Yu. G. Yatluk // Journal of Chemical & Engineering Data. - 2006. - Vol. 51, № 2. - С. 609-111
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
CRITICAL PRESSURES
Аннотация: The critical temperatures and pressures of eight n-diaminoalkanes NH2(CH2)nNH2 with n = 2, 3, 4, 6, 8, 9, 10, and 12 have been measured. The method of pulse heating of a wire probe immersed into the liquid under study has been used. Residence times are from (0.03 to 1) ms. The critical properties of diaminoalkanes have been estimated by the group-contribution methods by Joback and Reid, Constantinou and Gani, and Marrero and Gani. These properties have also been calculated using a method based on the assumption that the functions describing the dependence of the critical properties of homologous series on the number of mers in a molecule should be self-similar and provide the scaling behavior for long-chain molecules. The last method provides the best accuracy in calculating the critical properties of diaminoalkanes. For this method, the average absolute errors are equal to 0.4 % for the critical temperature and about 2 % for the critical pressure. ??

\\\\Expert2\\NBO\\Journal of Chemical and Engineering Data\\2006, v.51, p.609.pdf
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