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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Komogortsev S. V., Iskhakov R. S., Zimin A. A., Korenev S. V., Filatov E. Yu., Shubin Yu. V., Chizhik N. A., Yurkin G.Yu., Eremin E. V.
Заглавие : Correlation of magnetic anisotropy energy and order parameter in nanostructured CoPt particles
Коллективы : Euro-Asian Symposium "Trends in MAGnetism": Nanomagnetism
Место публикации : V Euro-Asian simposium "Trend in MAGnetism": Nanomagnetism: abstracts. - Vladivostok: FEFU, 2013. - С. 70. - ISBN 978-5-7444-3124-2
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Komogortsev S. V., Iskhakov R. S., Zimin A. A., Filatov E. Yu. , Korenev S. V. , Shubin Yu. V. , Chizhik N. A. , Yurkin G.Yu., Eremin E. V.
Заглавие : Correlation of magnetic anisotropy energy and order parameter in nanostuctured CoPt particles
Коллективы : Euro-Asian Symposium "Trends in MAGnetism": Nanomagnetism
Место публикации : V Euro-Asian simposium "Trend in MAGnetism": Nanomagnetism: abstracts. - Vladivostok: FEFU, 2013. - С. 246. - ISBN 978-5-7444-3124-2
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zobov V. E.
Заглавие : Quantum and classical correlations in high-temperature dynamics of two coupled large spins
Место публикации : THEOR. MATH. PHYS. - 2013. - Vol. 177, Is. 1. - P.1377-1389. - ISSN 0040-5779, DOI 10.1007/s11232-013-0110-5
Ключевые слова (''Своб.индексиров.''): generalized measurement--high-temperature approximation--mutual information--quantum correlation--spin coherent state--spin dynamics
Аннотация: We study the dynamical correlations between two coupled spins depending on time and the value of the spin quantum numbers. In the high-temperature approximation, we obtain analytic expressions for the mutual information and the quantum and classical parts of correlations. We consider both orthogonal and nonorthogonal measurements in the basis of spin coherent states. We show that at small times, the quantum part of correlations becomes much less than the classical part as the spin quantum numbers increase, while the situation is quite different at times equal to half the quantum period.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Ignatchenko V. A., Pozdnyakov A. V.
Заглавие : Spectral properties of superlattices with anisotropic inhomogeneities. The transition from 3D to 2D disorder
Коллективы : Moscow International Symposium on Magnetism
Место публикации : Diffusion and Defect Data Pt.B: Solid State Phenomena. - 2012. - Vol. 190. - P.597-600. - ISBN 1012-0394, DOI 10.4028/www.scientific.net/SSP.190.597. - ISBN 9783037854365
Ключевые слова (''Своб.индексиров.''): anisotropic inhomogeneities--dos--green function--superlattice--susceptibility--waves--anisotropic inhomogeneities--continuous transitions--correlation properties--density of state--dynamic susceptibility--inhomogeneities--spectral properties--wave numbers--dos--green's function--magnetic materials--magnetic susceptibility--superlattices--three dimensional--waves--anisotropy
Аннотация: Waves in superlattice (SL) contained inhomogeneities with anisotropic correlation properties are considered. The anisotropy of the correlation during the transition from 3D to 2D disorder is characterized by the parameter ? 1 = k ||/k?-1, where k || and k? are the correlation wave numbers along the axis of the SL and in the plane of the its layers, respectively (r || =k || -1 and r?=k?-1 are the correlation radii). Dependencies of both the dynamic susceptibility and density of states at the continuous transition from the isotropic three-dimensional inhomogeneities (? 1 = 0) to the twodimensional ones (? 1 = -1) have been obtained. В© (2012) Trans Tech Publications.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Komogortsev S. V., Iskhakov R. S., Sheftel E. N., Harin E. V., Krikunov A. I., Eremeeva E. V.
Заглавие : Magnetization correlations and random magnetic anisotropy in nanocrystalline films Fe 78Zr 10N 12
Коллективы : Moscow International Symposium on Magnetism
Место публикации : Diffusion and Defect Data Pt.B: Solid State Phenomena. - 2012. - Vol. 190. - P.486-489. - ISBN 9783037854365, DOI 10.4028/www.scientific.net/SSP.190.486
Ключевые слова (''Своб.индексиров.''): magnetic correlations--magnetic force microscopy--nanocrystalline alloys--random magnetic anisotropy--ferromagnetic correlations--magnetic correlation--nanocrystalline films--random magnetic anisotropies--magnetic force microscopy--magnetic materials--nanocrystalline alloys--zirconium--magnetism
Аннотация: The quantitative analysis of static ferromagnetic correlations in nanocrystalline films Fe 78Zr 10N 12 was performed by two methods: the correlation magnetometry technique and magnetic force microscopy. The data, obtained by both methods, prove to be in good agreement. В© (2012) Trans Tech Publications.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Val'kov V. V., Korovushkin M. M.
Заглавие : Lower subband splitting and superconductivity of 2D Hubbard fermions with strong intersite correlations
Коллективы : International Symposium "Nanophysics and Nanoelectronics-2011" (March 2011; Nizhni Novgorod)
Место публикации : Bull. Russ. Acad. Sci. Phys.: Allerton Press, 2012. - Vol. 76, Is. 2. - P.133-135. - ISSN 1062-8738, DOI 10.3103/S1062873812020074
Примечания : Cited References: 6. - This study was supported by Quantum Physics of Condensed Matter program of the Presidium of the Russian Academy of Sciences; the Russian Foundation for Basic Research, project np. 10-02-00251; the federal target program Scientists and Science Teachers of an Innovate Russia, 2009-2013; the Siberian Branch of the Russian Academy of Sciences, complex integration project no. 53; RF Presidential Grant MK-1300.2011.2; and the Siberian Branch of the Russian Academy of Sciences' Lavrent'ev Competition for Young Scientists.
Ключевые слова (''Своб.индексиров.''): coulomb correlations--doping levels--electron structures--fermi state--hubbard--intersite correlation--mean-square fluctuations--spectral intensity--split-off band--subbands--natural sciences
Аннотация: The effect of the strong intersite Coulomb correlations on the formation of an electron structure in the Shubin-Vonsowsky model in the regime of strong one-site correlations is studied. The results reveal a split-off band of the Fermi states. The spectral intensity of this band grows with the enhancement of the doping level and is determined by the mean-square fluctuation of occupation numbers. This changes the structure of the electron density of states qualitatively. © 2012 Allerton Press, Inc.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Balaev D. A., Semenov S. V., Petrov M. I.
Заглавие : Correlation between magnetoresistance and magnetization hysteresis in a granular high-T C superconductor: Impact of flux compression in the intergrain medium
Место публикации : J. Supercond. Nov. Magn.: Springer, 2014. - Vol. 27, Is. 6. - P.1425-1429. - ISSN 1557-1939, DOI 10.1007/s10948-014-2491-6. - ISSN 1557-1947
Примечания : Cited References: 27
Предметные рубрики: HIGH-TEMPERATURE SUPERCONDUCTOR
JOSEPHSON MEDIUM
CRITICAL-STATE
YBA2CU3O7-DELTA
FIELDS
BEHAVIOR
HTSC
COMPOSITES
RESISTANCE
MOTION
Ключевые слова (''Своб.индексиров.''): granular superconductor--josephson medium--effective field--magnetoresistance--magnetization hysteresis
Аннотация: The correlation between experimental magnetic field dependences of magnetoresistance and magnetization hysteresis in granular YBa2Cu3O7 is established. Within the proposed approach, magnetoresistance is assumed to be determined by the effective field in the intergrain boundaries the ensemble of which is considered to be a Josephson medium. The effective field in the intergrain medium can be written in the form B (eff)(H)=H-4 pi M(H)x alpha, where alpha is the parameter of averaged demagnetizing factors of grains and the degree of flux compression. A comparison of experimental magnetoresistance R(H) and magnetization M(H) hysteresis dependences obtained at different external magnetic field sweep rates yields the value alpha similar to 10, which is caused by the flux compression between grains. The proposed model describes well most of the features of the magnetoresistance hysteresis in granular high-T (C) superconductors.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Ignatchenko V. A., Pozdnyakov A. V.
Заглавие : Spectral properties of superlattices with anisotropic inhomogeneities. The transition from 3D to 1D disorder
Коллективы : Euro-Asian Symposium "Trends in MAGnetism", "Trends in MAGnetism", Euro-Asian Symposium
Место публикации : Diffusion and Defect Data Pt.B: Solid State Phenomena. - 2011. - Vol. 168-169. - P.85-88. - ISSN 1012-0394, DOI 10.4028/www.scientific.net/SSP.168-169.85. - ISSN 9783037850213
Ключевые слова (''Своб.индексиров.''): anisotropic inhomogeneities--dos--green's function--superlattice--susceptibility--waves--anisotropic inhomogeneities--continuous transitions--correlation properties--density of state--dynamic susceptibility--inhomogeneities--spectral properties--susceptibility--wave numbers--differential equations--magnetic susceptibility--superlattices--three dimensional--anisotropy
Аннотация: Waves in the superlattice (SL) contained inhomogeneities with anisotropic correlation properties are considered. The anisotropy of the correlations is characterized by the parameter ? = 1-k? / k ?, where k ? and k? are the correlation wave numbers along the axis of the SL and in the plane of its layers, respectively (r ? k ?-1 and r? = k?-1 are the correlation radii). Dependencies of both the dynamic susceptibility and density of states at the continuous transition from the isotropic three-dimensional inhomogeneities (? = 0 ) to the one-dimensional ones (? =1) have been obtained.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Zobov V. E.
Заглавие : Quantum discord in the central spin model
Коллективы : International Conference on Micro- and Nano-Electronics (Oct. 6-10, 2014; Zvenigorod, Russia)
Место публикации : Proceedings of SPIE: SPIE-Int. Soc. Optical Engineering, 2014. - Vol. 9440. - P.94401E-94401E-8. - ISBN 0277, DOI 10.1117/12.2180727. - ISBN 9781628415551
Примечания : Cited References:30
Предметные рубрики: DECOHERENCE
Ключевые слова (''Своб.индексиров.''): electron-nuclear spin echo--dynamical correlation--mutual information--quantum discord
Аннотация: The quantum properties of dynamic correlations in a system of an electron spin surrounded by nuclear spins under the conditions of free induction decay (FID) and spin echo have been studied. Analytical results for the time evolution of mutual information, classical part of correlations, and quantum part characterized by quantum discord have been obtained within the central spin model in the high-temperature approximation. The same formulas describe the quantum discord in both the FID and the spin echo although the forms of the dependences are different because of difference in the parameters entering into the formulas. Discord of the spin echo compared with the FID has a strong dependence on time at short times, and it tends to zero with decreasing of the magnetic field, whereas in the case of the FID it reaches a plateau.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Knyazev, Yu. V., Kazak N. V., Platunov M. S., Ivanova N. B., Bezmaternykh L. N., Arauzo A., Bartolome J., Ovchinnikov S. G.
Заглавие : Disorder- and correlation-induced charge carriers localization in oxyborate MgFeBO4, Mg0.5Co0.5FeBO4, CoFeBO4 single crystals
Место публикации : J. Alloys Compd.: Elsevier Science, 2015. - Vol. 642. - P.232-237. - ISSN 0925, DOI 10.1016/j.jallcom.2015.04.056. - ISSN 18734669(eISSN)
Примечания : Cited References:32. - This work has been financed by Council for Grants of the President of the Russian Federation (Project Nos. NSh-2886.2014.2, SP-938.2015.5), Russian Foundation for Basic Research (Project Nos. 13-02-00958-a, 13-02-00358-a, 14-02-31051-mol-a). The work of one of coauthors (M.S.P.) was supported by the grant of KSAI "Krasnoyarsk Regional Fund of Supporting Scientific and Technological Activities'' and by the Program of Foundation for Promoting the Development of Small Enterprises in Scientific and Technical Sphere ("UMNIK'' program). Financial support from the Spanish MINECO MAT11/23791 and DGA IMANA project E-34 is acknowledged.
Предметные рубрики: WARWICKITE
Fe2OBO3
FeBO3
Ключевые слова (''Своб.индексиров.''): transition metal alloys and compounds--disordered system--semiconductors--electrical transport
Аннотация: The temperature dependence of the resistivity of single crystalline Mg1−xCoxFeBO4 samples with x = 0.0, 0.5, 1.0 is investigated for the temperature range (210–400 K). The conduction was found to be governed by Mott variable-range hopping (VRH) in the low-temperature range (T = 210–270 K) and by thermo-activation mechanism in the high-temperature range (T = 280–400 K). Microscopic electronic parameters, such as the density of the localized states near the Fermi level, localization length, the hopping length, and the activation energy have been obtained. The change of the activation energy observed at high-temperature range was attributed to local structure distortions around Fe and Co atoms. The complicated behavior of charge transfer mechanisms is discussed based on two approaches: atomic disorder and electron correlations.Температурная зависимость сопротивления монокристаллических образцов Mg1- XCoxFeBO4 с х = 0,0; 0.5, 1.0 исследована в интервале температур (210-400 К). Было установлено, что проводимость регулируется Мотт-переменной длиной прыжка (VRH) в области низких температур (T = 210-270 К) и термо-активационным механизмом в области высоких температур (Т = 280-400 К). Микроскопические электронные параметры, такие как плотность локализованных состояний вблизи уровня Ферми, длины локализации, длина прыжка, и энергия активации были получены. Изменение энергии активации наблюдается при высокой температурном Диапазоне, что было связано с локальными искажениями структуры вокруг Fe и Co атомов. Сложный механизм поведения переноса заряда обсуждается на основе двух подходов: атомный беспорядок и электронная корреляция.
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11.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Greben'kova Yu.E., Edel'man I. S., Sokolov A. E., Stepanova E. A., Andreev N. V., Chichkov V. I.
Заглавие : Correlation between magnetic and magneto-optical properties of Sr doped PrMnO3 polycristalline films
Коллективы : Moscow International Symposium on Magnetism
Место публикации : Moscow Int. Symp. on Magnet. (MISM-2014): Book of abstracts. - 2014. - Ст.2PO-I2-26. - P.807. - ISBN 978-5-91978-025-0
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12.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Аплеснин, Сергей Степанович, Udod L. V., Sitnikov M. N., Eremin E. V., Molokeev M. S., Tarasova L. S., Yanushkevich K. I., Galyas A. I.
Заглавие : Correlation of the magnetic and transport properties with polymorphic transitions in bismuth pyrostannate Bi2(Sn1 − xCr x)2O7
Коллективы : Russian Foundation for Basic Research [15-02-01445-a], Ministry of Education and Science of the Russian Federation [114090470016]
Место публикации : Phys. Solid State: MAIK Nauka-Interperiodica / Springer, 2015. - Vol. 57, Is. 8. - P.1627-1632. - ISSN 1063-7834, DOI 10.1134/S1063783415080028
Примечания : Cited References: 17. - This study was supported by the Russian Foundation for Basic Research (project no. 15-02-01445-a) and the Ministry of Education and Science of the Russian Federation (state task no. 114090470016).
Предметные рубрики: GAS SENSORS
Bi2Sn2O7
CRYSTAL
Аннотация: The correlation of the electrical, magnetic, and structural properties of Bi2(Sn1 − xCrx)2O7 solid solutions has been investigated for two compositions with x = 0.05 and 0.1. The temperatures of structural phase transitions and anomalies of the electrical resistance in the vicinity of these transitions at temperatures in the range 300 K ˂ T ˂ 1000 K have been determined using differential scanning calorimetry. It has been found that the thermoelectric power changes sign upon the polymorphic transition. The paramagnetic Curie temperature and the chromium-ion spin have been found from the temperature dependence of the magnetic susceptibility in the range 4 K ˂ T ˂ 1000 K and from the field dependence of the magnetic moment in magnetic fields of up to 6 T.
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13.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Zobov V. E.
Заглавие : Quantum discord in the central spin model
Коллективы : International Conference on Micro- and Nano-Electronics , International Conference on Micro- and Nano-Electronics (Oct. 6-10, 2014; Zvenigorod, Russia)
Место публикации : International Conference "Micro- and Nanoelectronics – 2014". - 2014. - Ст.q2-06
Примечания : Cited References:30
Ключевые слова (''Своб.индексиров.''): electron-nuclear spin echo--dynamical correlation--mutual information--quantum discord
Аннотация: The quantum properties of dynamic correlations in a system of an electron spin surrounded by nuclear spins under the conditions of free induction decay (FID) and spin echo have been studied. Analytical results for the time evolution of mutual information, classical part of correlations, and quantum part characterized by quantum discord have been obtained within the central spin model in the high-temperature approximation. The same formulas describe the quantum discord in both the FID and the spin echo although the forms of the dependences are different because of difference in the parameters entering into the formulas. Discord of the spin echo compared with the FID has a strong dependence on time at short times, and it tends to zero with decreasing of the magnetic field, whereas in the case of the FID it reaches a plateau.
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14.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Krylov A. S., Krylova S. N., Vtyurin A. N.
Заглавие : Raman spectroscopy study of phase transitions by dynamic temperature mode
Коллективы : International Symposium on Two-Dimensional Correlation Spectroscopy, Конференция по двухразмерной корреляционной спектроскопии
Место публикации : The 8th Int.l Symp. on TwoDimensional Correlation Spectroscopy (2DCOS-8): program, abstracts of lectures. - 2015. - P.17
Аннотация: Temperature investigations of structural phase transition in solids usually carried out at the static temperature mode. Temperature of the sample is stabilizing for a time, since the sample temperature changed and then do a spectra acquisition. Another possibility is to use the dynamic temperature mode (DTM). Temperature of the sample during DMT constantly changing with a law const t T = ∂ ∂ . The basic DTM concept and advantages of technique with addition few recent examples of investigations will be presented. Example 1. Investigation the mechanism of structure ordering in Rb2KMoO3F3 using Raman technique. [1] The line width behavior of fully symmetric Mo−O vibrations in [MoO3F3] 3− octahedral shown in Figure 1 and it indicates that processes connected with the phase transition are spread over about 20 K in the cooling regime and over about 15 K in the heating regime. In the low temperature phase, the line is wider, indicating that the anionic octahedra are more disordered in this phase compared with initial one. The experimental data also reveals strong variations of the transition region as a function of cooling/heating rate, this range varies from 20 to 65 K at the cooling regime and 15 to 18 K at the heating regime. Example 2. Investigation of the phase transition mechanism in K3Na(CrO4)2 single crystal by Raman spectroscopy. Figure 2 demonstrate condensation of two soft modes under phase transition.
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15.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Krylov A. S., Krylova S. N., Goryainov S. V., Laptash N. M., Vtyurin A. N.
Заглавие : Phase transitions in (NH4)2MoO2F4 crystal
Коллективы : International symposium on twodimensional correlation spectroscopy
Место публикации : The 8th Int.l Symp. on TwoDimensional Correlation Spectroscopy (2DCOS-8): program, abstracts of lectures. - 2015. - Ст.P21. - P.50
Аннотация: The mechanisms of temperature and high pressure phase transitions have been studied by Raman spectroscopy. At room temperature (NH4)2MoO2F4 crystals has rhombic symmetry (space group Cmcm, Z = 4). The crystal has phase transitions at the temperatures T1 = 269,8 K and T2 = 180 K (space group Pnma) [1, 2]. Room temperature (296 K) experiments under high hydrostatic pressure up to 3.6 GPa have been carried out. Experimental data indicates a phase transition into a new high-pressure phase for (NH4)2MoO2F4 at 1.2 GPa. All the changes observed are reversible and can be reproduced with different samples taken from the same crystallization, within the experimental error (about 0.05 GPa). Raman spectra of small non-oriented crystals ranging from 10 to 350 K have been observed. The experiment shows molecular groups [MoO2F4] 2- and ammonium in high temperature phase are disordered. The changes of the Raman spectrum have been found in the range corresponding to the ammonium vibrations below temperature T2. Figure shows transformation of the ntensity with temperature. The first temperature phase transition is related to the ordering molecular octahedron groups [MoO2F4] 2-Second phase transitions are associated with the ordering of ammonium.
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16.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Aleksandrovsky A. S.
Заглавие : Nonlinear optical processes and DUV generation in random domain structures of SBO
Коллективы : Conference on Lasers and Electro-Optics
Место публикации : Conference on Lasers and Electro-Optics Europe - Technical Digest/ Conference on Lasers and Electro-Optics (2015 ; may ; 10–15 ; San Jose, California, US): IEEE-Institute Electrical and Electronics Engineers, 2015. - Vol. 2015-August. - Ст.7184028. - ISBN 9781557529688 (ISBN), DOI 10.1364/CLEO_SI.2015.STh3H.1
Примечания : Cited References: 3
Предметные рубрики: CRYSTAL
Ключевые слова (''Своб.индексиров.''): correlation--nonlinear optics--optical diffraction--optical frequency conversion--optical harmonic generation--ultrafast optics
Аннотация: Random domain structures in orthorhombic strontium tetraborate (α-SBO) are capable in enhancing nonlinear optical conversion efficiency for large variety of processes throughout all transparency window of this material, down to 121 nm. Properties of the material, origin of domains, frequency doubling and autocorrelation measurements, conversion of supercontinuum to UV and continuously tunable VUV generation are described. Prospects of biphoton field generation in α-SBO are discussed. © 2015 OSA.
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17.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Шайдуров, Александр Алексеевич, Акатов, Андрей Владиславович, Щербинин, Всеволод Владиславович, Хорев, Николай Германович, Момот, Андрей Павлович, Неймарк, Михаил Израилевич, Беллер, Александр Викторович
Заглавие : Определение статистически значимых факторов эмболии при тромбозе вен нижних конечностей
Место публикации : Известия АлтГУ. - 2015. - Т. 2, Вып. 1. - С. 169-174. - ISSN 1561-9443, DOI 10.14258/izvasu(2015)1.2-31
Примечания : Библиогр.: 6
Ключевые слова (''Своб.индексиров.''): статистические методы анализа данных--корреляционный анализ--дискриминантный анализ--тромбоз системы нижней полой вены--тромбоэмболия легочной артерии--statistical methods of data analysis--correlation analysis--discriminant analysis--thrombosis of the inferior vena cava--pulmonary embolism
Аннотация: Рассматривается возможность оценки факторов эмболизации при тромбозе системы нижней полой вены. В качестве инструментария используются статистические однопараметрические и многопараметрические методы анализа данных. Несмотря на то, что современная терапия позволяет предупредить возникновение тромботического события, ее проведение сопряжено с опасностью развития кровотечений. Хирургическое лечение тромбоза вен нижних конечностей также является сложным по технике выполнения оперативным вмешательством, с далеко не однозначными показаниями и противопоказаниями. Предполагается, что у больных имеются предрасполагающие факторы к возникновению этого осложнения. В силу этого выявление факторов, способствующих возникновению эмбологенности, явилось целью нашего исследования. Для выявления факторозависимо-сти тромбоэмболии легочной артерии и показателей конституции, возраста, пола, анализов венозной крови, гемостаза и сопутствующей патологии в случайной выборке был проведен корреляционный анализ. Для установления возможных комбинаций параметров, оказывающих влияние на наличие тромбоэмболии легочной артерии, осуществлен дискриминантный анализ данных.In the paper, the identifiability of embolization factors due to thrombosis of inferior vena cava using one-parameter and multi-parameter statistical methods is investigated. Despite the fact that modern therapy can prevent the occurrence of thrombotic events, its delivery entails a hemorrhage risk. Surgical treatment of lower limbs venous thrombosis is complicated due to the technique of surgical intervention with indications and contraindications being far from unambiguous. It is assumed that patients have predisposing factors to such complications. Therefore, the goal of the study is to identify the embologenic factors. To reveal the dependencies between pulmonary embolism and bodily constitution, age, sex, test results of venous blood, hemostasis, and comorbidity, a correlation analysis has been conducted in a random sample. Further, a discriminant analysis has been performed for identification of the potential combination of parameters that characterize the pulmonary embolism.
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18.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Якубайлик, Эдуард Константинович, Балаев, Александр Дмитриевич, Ганженко, Игорь Михайлович, Бутов, Павел Юрьевич
Заглавие : Корреляция магнитных свойств и содержания железа в продуктах мокрой магнитной сепарации
Место публикации : Изв. вузов. Черн. металлургия: Нац. исслед. технол. ун-т "МИСиС", 2015. - Т. 58, № 10. - С. 744-748. - ISSN 0368-0797, DOI 10.17073/0368-0797-2015-10-744-748
Примечания : Библиогр.: 10
Ключевые слова (''Своб.индексиров.''): мокрая сепарация--слив--концентрат--удельная намагниченность насыщения--удельная магнитная восприимчивость--wet separation--discharge--concentrate--specific saturation magnetization--specific magnetic susceptibility
Аннотация: Изучено изменение одного из основных параметров мокрого магнитного обогащения - содержания железа - и магнитных характеристик продуктов по технологической схеме обогащения Абагурской обогатительной фабрики (от слива классификаторов до концентрата 2-й стадии). Количество железа в пробах заметно растет с уменьшением крупности частиц. Приращение содержания железа магнетитового по схеме составляет 27,43 %, удельная намагниченности насыщения σ возрастает на 25,8 А·м2/кг; в поле сепарации Н = 175 кА/м прирост удельной намагниченности насыщения аналогичен - 25,76 А·м2/кг. Значения удельной магнитной восприимчивости χ в концентрате в сравнении со сливом выше. С ростом напряженности поля сепарации удельная восприимчивость продуктов уменьшается в несколько раз. По всей схеме обогащения наблюдается пропорциональность значений содержания железа и магнитных параметров продуктов. Учитывая эту закономерность, магнитные характеристики продуктов можно использовать для контроля и регулирования технологических режимов процессов мокрого магнитного обогащения.The change of one of the main parameters of wet magnetic concentration – the iron content and magnetic characteristics of products made by the concentration technological scheme of Abagur Enrichment Plant (from classifi er discharge to concentrate of the 2nd stage) has been studied. The iron content in the samples is growing signifi - cantly with the decrease of the particle coarseness. The increment of iron magnetite by the scheme is 27.43 %, the specifi c value of saturation magnetization σs increases by 25.8 A·m2/kg. The growth of specifi c magnetization in the separation fi eld H = 175 kA/m is similar – 25.76 A·m2/kg. The values of specifi c magnetic susceptibility χ in the concentrate are higher in comparison with the discharge. The specifi c product susceptibility decreases in several times with the growth of separation fi eld strength. Throughout the concentration scheme the quantity proportionality of iron content and magnetic parameters of products is observed. Taking into an account all the regularities, magnetic characteristics of the products can be used to control and regulate the process of technological modes of wet magnetic separation processes.
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19.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Aleksandrovsky A. S., Vyunishev A. M., Zaitsev A. I., Pospelov G. I., Slabko V. V.
Заглавие : Diagnostics of fs pulses by noncollinear random quasi-phase-matched frequency doubling
Место публикации : Appl. Phys. Lett. - 2011. - Vol. 99, Is. 21. - Ст.211105. - ISSN 0003-6951, DOI 10.1063/1.3664094
Примечания : Cited References: 12. - The work was supported by Ministry of Education and Science of Russian Federation (Contract No. 16.740.11.0150); Grant of President of Russian Federation for support of leading scientific schools Grant Nos. SS-4645.2010.2 and RNP.2.1.1.3455 and Projects Nos. 2.5.2 and 3.9.1 of PSB RAS and 27.1 and 5 of SB RAS. A. M. Vyunishev is grateful for the support from Krasnoyarsk Regional Fund of Science and Technical Activity Support.
Ключевые слова (''Своб.индексиров.''): autocorrelation measurement--cross-correlation measurements--fs pulse--noncollinear--nonlinear photonic crystals--nonuniformity--quasi-phase-matched frequency doubling--random structures--tetraborate--vacuum ultraviolets--wide spectral range--band structure--frequency doublers--strontium--photonic crystals
Аннотация: Noncollinear random quasi-phase-matched frequency doubling in nonlinear photonic crystal (NPC) of strontium tetraborate (SBO) can be used for background-free autocorrelation measurements of ultrashort pulses in wide spectral range without any angular tuning of nonlinear photonic crystal. Nonuniformity of reciprocal superlattice vectors spectrum of random structure does not affect the accuracy of measurement. Nonlinear photonic crystals of strontium tetraborate are attractive medium for cross-correlation measurements in deep and vacuum ultraviolet. VC 2011 American Institute of Physics. [doi:10.1063/1.3664094]
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20.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Val'kov V. V., Korovushkin M. M.
Заглавие : Splitting of the lower subband of Hubbard fermions in the Shubin-Vonsowsky model under the influence of strong intersite correlations
Место публикации : J. Exp. Theor. Phys.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2011. - Vol. 112, Is. 1. - P108-120. - ISSN 1063-7761, DOI 10.1134/S1063776110061056
Примечания : Cited References: 26. - We express our deep gratitude to R. O. Zaitsev for numerous remarks and discussions. We are grateful to A. A. Golovnya, A. A. Shklyaev, and V. A. Mitskan for specific advice on the numerical calculations of the mass operator. This work was supported by the "Quantum Condensed Matter Physics" Program of the Presidium of the Russian Academy of Sciences, the Russian Foundation for Basic Research (project no. 10-02-00251), the "Scientific and Scientific-Pedagogical Personnel of Innovational Russian for 2009-2013" Federal Goal-Oriented Program, and the Interdisciplinary Integration Project no. 53 of the Siberian Branch of the Russian Academy of Sciences. One of us (M. K.) thanks Lavrentiev's contest of youth projects of the Siberian Branch of the Russian Academy of Sciences.
Предметные рубрики: NARROW ENERGY BANDS
ELECTRON CORRELATIONS
Ключевые слова (''Своб.индексиров.''): cooper channels--cooper instability--density of electronic state--doping levels--electron concentration--energy structures--hubbard--hubbard operators--interaction energies--intersite correlation--mott-hubbard insulator--nonuniform--renormalization--root mean squares--scattering amplitudes--spectral intensity--split-off band--strongly correlated fermions--sub-bands--doping (additives)--superconducting transition temperature
Аннотация: The diagram technique for Hubbard operators is used to investigate the influence of intersite Coulomb interactions on the energy structure and Cooper instability of strongly correlated fermions. Allowance for intersite correlations in doped Mott-Hubbard insulators is shown to lead to a splitting of the lower subband of Hubbard fermions and to the formation of a band of fluctuation states as soon as the intersite interaction energy becomes comparable to or exceeds the mean kinetic energy. The spectral intensity of the splitoff band is proportional to the root-mean-square fluctuation of the occupation numbers and increases with doping level. The predicted effect changes significantly the structure of the density of electronic states. This leads to a renormalization of the pole of the scattering amplitude in the Cooper channel and manifests itself as a nonuniform (in electron concentration) modification of the dependence of the critical superconducting transition temperature.
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