Центральная Научная Библиотека УрО РАН

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   П 46

    Пожарская, Г. И.
    Диффузия броуновских частиц в критической области расслаивания раствора альфа, альфа/штрих-лутидин-вода [] = Diffusion of Brownian Particles in the Critical Region of a,a'-Lutidine-Water Solution Separation / Г. И. Пожарская, С. П. Самохин, В. П. Скрипов // Журнал физической химии. - 1996. - Т. 70, N4. - С. 652-654

ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
ДИФФУЗИЯ РАСТВОРА -- ЧАСТИЦЫ БРОУНОВСКИЕ -- БРОУНОВСКИЕ ЧАСТИЦЫ -- расслаивание растворов -- РАСТВОР АЛЬФА, АЛЬФА/ШТРИХ-ЛУТИДИН-ВОДА -- АЛЬФА, АЛЬФА/ШТРИХ-ЛУТИДИН-ВОДА -- АЛЬФА, АЛЬФА/ШТРИХ-ЛУТИДИН-ВОДА-ЛАТЕКС -- АЛЬФА, АЛЬФА/ШТРИХ -- ЛУТИДИН -- ВОДА -- ЛАТЕКС -- СПЕКТРОСКОПИЯ КОРРЕЛЯЦИОННАЯ -- КОРРЕЛЯЦИОННАЯ СПЕКТРОСКОПИЯ -- ОБЛАСТЬ ГОМОГЕННАЯ -- ГОМОГЕННАЯ ОБЛАСТЬ -- ТОЧКА КРИТИЧЕСКАЯ -- КРИТИЧЕСКАЯ ТОЧКА
Аннотация: Методом корреляционной спектроскопии исследована серия растворов альфа, альфа/штрих-лутидин-вода-латекс в гомогенной области существования раствора альфа, альфа/штрих-лутидин-вода в окрестности критической точки расслаивания 10 в -4.5 степени < эпсилон = [T-Tc]Tc < 10 в -2.5 степени. Определены коэффициенты диффузии раствора и броуновских частиц

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   Б 79

    Болтачев, Г. Ш.
    Термодинамические свойства азота, аргона, кислорода и их смесей в области фазового перехода жидкость-газ [] = The thermodynamic properties of nitrogen, argon, oxygen, and their mixtures in the region of the liquid-gas phase transition / Г. Ш. Болтачев, В. Г. Байдаков // Журнал физической химии. - 2006. - V. 80, N 4. - 594-597: рис., табл. - Библиогр: с. 597 (9 назв.) . - ISSN 0044-4537

ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
ФАЗОВЫЙ ПЕРЕХОД ЖИДКОСТЬ-ГАЗ -- МЕТАСТАБИЛЬНЫЕ ОБЛАСТИ -- ЛАБИДЬНЫЕ ОБЛАСТИ -- спинодали -- ОБЛАСТИ ЛАБИЛЬНЫЕ -- ОБЛАСТИ МЕТАСТАБИЛЬНЫЕ
Аннотация: Предложена процедура построения уравнения состояния для метастабильных и лабильных областей при переходе жидкость-газ. Достигнуто согласованное описание р,Т и калорических свойств. Локализованы положения спинодалей как чистых флюидов, так и их смесей

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   Б 18

    Байдаков, В. Г.
    О механизме формирования зародышей новой фазы в области сильной метастабильности [] = On the Mechanism of Formation of Nuclei of a New Phase in a Region of Strong Metastability / В. Г. Байдаков // Доклады Академии наук. - 2004. - Т. 394, N 2. - С. 179-182. - Библиогр.: с. 182 (11 назв.) . - ISSN 0869-5652

ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
ФИЗИКА -- ЗАРОДЫШЕОБРАЗОВАНИЕ -- МЕТАСТАБИЛЬНОСТЬ -- НУКЛЕАЦИЯ ГОМОГЕННАЯ -- ГОМОГЕННАЯ НУКЛЕАЦИЯ -- КОМПЬЮТЕРНОЕ МОДЕЛИРОВАНИЕ -- МОДЕЛИРОВАНИЕ КОМПЬЮТЕРНОЕ -- СПИНОДАЛИ

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   S 89

    Vshivkov, S. A.
    Effect of molecular dimensions of components on phase transitions in solutions of oligomeric polyethers / S. A. Vshivkov, M. Z. Faizullin // Polymer Science. Series A. - 2009. - Vol.51, №9. - С. 974-978

ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
POLYMER-SOLVENT INTERACTION -- POLYSTYRENE -- REGION
Аннотация: The molecular masses and intrinsic viscosities of a series of oligomeric poly(propylene glycols) have been studied by light scattering, analysis of chain ends, viscometry, and the cloud-point method. Phase diagrams are plotted and the Flory-Huggins thermodynamic interaction parameters and the second virial coefficients are calculated for oligomeric poly(propylene glycol)-n-alkane systems. The effects of the molecular dimensions of components on their mutual solubility and positions of boundary curves are determined. UCST decreases with an increase in the size of poly(propylene glycol) macromolecules and increases with an increase in the size of n-alkane mol

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   V 76


    Vitrification of liquid inclusions in hcp 3He-4He crystal: The role of an intermediate bcc phase [Electronic resource] / N. P. Mikhin, A. P. Birchenko, A. P. Neoneta, E. Y. Rudavskii, V. G. Baidakov // Journal of Low Temperature Physics. - 2014. - Vol.175, № 1-2. - 154-159. . - Bibliogr. : p. 159 (11 ref.)

ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
NMR -- RELAXATION TIMES -- SOLID HELIUM
Аннотация: The phase structure of the rapidly quenched solid helium samples is studied by the NMR technique in dilute 3He-4He mixtures at 1.35-1.8 K. The pulse NMR method is used to measure the spin-lattice and spin-spin relaxation times for all coexisting phases. An additional spin-lattice relaxation process is found just before vitrification of the liquid inclusions in hcp matrix. The relaxation rate of the new process coincides with that of bcc solid. It has been found that the new relaxation process is observed only in the temperature region of the phase diagram where an equilibrium bcc phase exists. After the liquid inclusions vitrification has been completed, the contribution from the bcc phase is not detected. The spin-lattice relaxation times in all of coexisting phases are discussed

\\\\expert2\\nbo\\Journal of Low Temperature Physics\\2014, v.175, p. 154-159.pdf
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10.

11.

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   S 68

    Smolyak, B. M.
    The effect of ac magnetic fields on the lifting power of levitating superconductors / B. M. Smolyak, G. V. Ermakov, L. I. Chubraeva // Superconductor Science and Technology. - 2007. - Vol.20, №4. - С. 406-411

ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
LEVITATION FORCE -- SUPERCONDUCTING SUSPENSION -- LIFTING FORCE
Аннотация: This study deals with the decrease in the levitation force under the action of an ac field up to the frequency at which oscillations of the superconducting suspension are limited by inertia. The lifting force was measured as a function of the ac field amplitude and the exposure time. It was shown that the force quickly decreased at the moment the ac field was applied and then continued diminishing, but at a lower rate. A qualitative model was proposed, taking into account two effects of the ac field on the magnetization of the levitating superconductor: a complete destruction of the critical state in some section of the superconductor (to a depth λac) and the initiation of a faster magnetic relaxation in the region where the induction gradient is preserved

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12.

13.

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   S 68

    Smolyak, B. M.
    Slowing-down of the vortex motion in the flux creep process by counter forces exerted on the vortex ends [Electronic resource] / B. M. Smolyak, M. S. Zakharov // Superconductor Science and Technology. - 2012. - Vol.25, №12. - С. 125019. - Bibliogr. : p. 125019 (15 ref.)

ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
BIPOLAR CURRENTS -- CRITICAL STATE -- FERROMAGNETS
Аннотация: The effect of the suppression of flux creep in a high-temperature superconductor by counter forces exerted on the vortex ends was studied. These forces, acting in the opposite direction to the process of vortex diffusion, arise when the magnetized sample is put into a nonuniform magnetic field. The source of the field should be placed near the surface of the superconductor where the flux line ends are located. The critical states in a disk sample placed near a ferromagnet or permanent magnets were calculated. The results of the calculations verify the bipolar current structure and, therefore, the existence of counter Lorentz forces in the near-surface region. It was shown that in addition to the Lorentz force it is necessary to take into account the magnetic force acting on the vortex ends in the external nonuniform magnetic field. Depending on the direction of this force, the magnetic relaxation slows down or accelerates

\\\\expert2\\NBO\\Superconductor Science and Technology\\2012. V. 25, N12. P. 125019.pdf
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14.

15.

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   S 68

    Smolyak, B. M.
    Effects of relaxation in levitating superconductors / B. M. Smolyak, G. N. Perelshtein, G. V. Ermakov (Yermakov) // Cryogenics. - 2002. - Vol.42, №10. - С. 635-644

ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
SUPERCONDUCTORS -- FLUX CREEP -- MAGNETIC LEVITATION
Аннотация: The effect of the magnetic flux creep on the levitation stability of high-temperature superconductors was studied. It was shown experimentally that under a unipolar magnetization the levitation force decreased at a logarithmic velocity characteristic of the creep process. If the current structure was bi- or multi-polar one, which was formed in a sample exposed to a reversing external magnetic field, the force remained unchanged during a certain period of time. The theory of relaxation of magnetization and force for a partial and full penetration of the critical state was considered. It was shown that relaxation decelerated sharply if the region with a current producing the main magnetization was far from the superconductor surface. A concept of an open and internal magnetic relaxation was introduced. The time of the internal relaxation for different reverse depths was estimated. The calculated values approached the experimental values of the levitation stabilization time

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16.

17.

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   S 66

    Skripov, V. P.
    Spontaneous boiling up as a specific relaxation process in polymer solvent systems [Text] / V. P. Skripov, S. E. Puchinscics // Journal of Applied Polymer Science. - 1996. - V. 59, №11. - P1659-1665

ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
КИПЕНИЕ СПОНТАННОЕ -- СПОНТАННОЕ КИПЕНИЕ -- ПРОЦЕСС СПЕЦИАЛЬНЫЙ -- СПЕЦИАЛЬНЫЙ ПРОЦЕСС -- ПРОЦЕСС ОСЛАБЛЕННЫЙ -- ОСЛАБЛЕННЫЙ ПРОЦЕСС -- СИСТЕМА ПОЛИМЕРНАЯ -- ПОЛИМЕРНАЯ СИСТЕМА -- СИСТЕМА РАСТВОРЯЮЩАЯСЯ -- РАСТВОРЯЮЩАЯСЯ СИСТЕМА
Аннотация: The phenomenon of spontaneous bubble nucleation in extremely supersaturated (superheated) polymer–solvent systems has been studied experimentally. Spontaneous boiling-up temperatures T* for polystyrene and poly(ethylene glycol) solutions in a number of solvents have been measured at different values of pressure p and weight fraction of polymer c by the pulse heating method. The heating rate Ṫ varied from 105 to 107 K/s. For all systems studied, the values of T* have been found to increase with increasing p and c. The T*(p, c) dependence is discussed with the use of the data on the degree of compatibility of components. The peculiarities of polymeric solutions manifest themselves in the region c → 1, as follows: (i) an abrupt increase (by 1–2 orders of magnitude) in the slope of the T*(c) dependence, and (ii) the appearance of the dependence of T* values on the heating rate. Our approach to the interpretation of this result assumes a change in the initial composition of a solution in the course of heating due to polymer decomposition. An example of the extended phase diagram of a polymer–solvent system including the kinetic surface of T*(p, c) is given

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18.

19.

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   S 61


    Simulation of noncrystalline silicon nanoparticles: a computer experiment [Текст] / A. E. Galashev, V. A. Polukhin, I. A. Izmodenov, O. R. Rakhmanova // Glass Physics and Chemistry. - 2006. - Vol. 32, № 1. - С. 99-105

ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
SILICON
Аннотация: The physical properties of vitreous and amorphous silicon nanoparticles containing 300, 400, and 500 atoms are investigated by the molecular dynamics method. For a limited number of degrees of freedom, the internal energy of the amorphous phase is often less than the internal energy of the vitreous phase. The structure of the central region of silicon nanoparticles is studied in detail by constructing Voronoi polyhedra, which make it possible to determine the mean length of bonds and their number. The differences between the structures of nanoparticles in the amorphous and vitreous states are determined by the differences in the distribution of angles between Si-Si bonds and the distribution of bond lengths. Local arrangements of atoms in vitreous silicon nanoparticles are characterized by larger variations in the interatomic distances. The self-diffusion coefficients determined from mean-square atomic displacements are smaller for amorphous nanoparticles due to dominant diffusion over dangling Si-Si bonds.

\\\\Expert2\\NBO\\Glass Physics and Chemistry\\2006, v. 32, N. 1, p.99.pdf
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