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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : RYABUSHKIN D. S., MOSKVICH Y. N., SERGEEV N. A.
Заглавие : SLOW MOLECULAR MOTIONS AND SOLID ECHO IN HYDRATE CRYSTALS
Место публикации : Phys. Lett. A: ELSEVIER SCIENCE BV, 1987. - Vol. 121, Is. 7. - P357-359. - ISSN 0375-9601, DOI 10.1016/0375-9601(87)90306-9
Примечания : Cited References: 16
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Erkaev N. V., Shaidurov V. A., Semenov V. S., Langmayr D., Biernat H. K.
Заглавие : Peculiarities of Alfven wave propagation along a nonuniform magnetic flux tube
Место публикации : Phys. Plasmas: AMER INST PHYSICS, 2005. - Vol. 12, Is. 1. - Ст.12905. - ISSN 1070-664X, DOI 10.1063/1.1833392
Примечания : Cited References: 18
Предметные рубрики: HYDROMAGNETIC-WAVES
TRANSFER EVENTS
FIELD
SLOW
Ключевые слова (''Своб.индексиров.''): algebra--approximation theory--boundary conditions--electric conductivity--electric field effects--integral equations--magnetic flux--magnetohydrodynamics--perturbation techniques--polarization--vectors--velocity measurement--alfven wave propagation--axial symmetry--magnetic flux tubes--magnetosonic pulses--wave propagation
Аннотация: Within the framework of the assumption of large azimuthal wave numbers, the equations for Alfven and slow magnetosonic waves are obtained using frozen-in material coordinates. These equations are specified for the case of a nonuniform magnetic field with axial symmetry. Assuming a meridional polarization of the magnetic field and velocity perturbations, the effects of Alfven wave propagation are analyzed which are related to geometric characteristics of a nonuniform magnetic field: (a) A finite curvature radius of the magnetic field lines and (b) convergence of magnetic field lines. The interaction between the Alfven and magnetosonic waves is found to be strongly dependent on the curvature radius of the magnetic tube and the local plasma beta parameter. The electric field amplitude and the length scale of a wave front are found to increase very strongly in the course of the Alfven wave propagation along a converging magnetic flux tube. Also studied is a temporal decrease of the wave perturbations which is caused by dissipation at the conducting boundary. (C) 2005 American Institute of Physics.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : MOSKVICH Y. N., PONOMARENKO A. V., ZOBOV V. E.
Заглавие : MEASUREMENT OF SLOW MOTIONS IN SOLIDS WITH STRONG DIPOLE INTERACTION USING MULTIPULSE SEQUENCE
Место публикации : Phys. Lett. A: ELSEVIER SCIENCE BV, 1984. - Vol. 105, Is. 7. - P380-382. - ISSN 0375-9601, DOI 10.1016/0375-9601(84)90287-1
Примечания : Cited References: 12
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Volova T. G., Kiselev E. G., Baranovskiy S. V., Zhila N. O., Prudnikova S. V., Shishatskaya E. I., Kuzmin A. P., Nemtsev I. V., Vasiliev A. D., Thomas S.
Заглавие : Degradable poly(3-hydroxybutyrate)—the basis of slow-release fungicide formulations for suppressing potato pathogens
Место публикации : Polymers. - 2022. - Vol. 14, Is. 17. - Ст.3669. - ISSN 20734360 (ISSN), DOI 10.3390/polym14173669
Примечания : Cited References: 118
Аннотация: Three-component slow-release fungicide formulations with different modes of action of the active ingredients for suppressing potato pathogens were constructed for the first time. The difenoconazole, mefenoxam, prothioconazole, and azoxystrobin fungicides were embedded in the degradable polymer P(3HB)/birch wood flour blend and examined using SEM, IR spectroscopy, X-ray analysis, DTA, and DSC. Results showed that no chemical bonds were established between the components and that they were physical mixtures that had a lower degree of crystallinity compared to the initial P(3HB), which suggested different crystallization kinetics in the mixtures. The degradation behavior of the experimental formulations was investigated in laboratory micro-ecosystems with pre-characterized field soil. The slow-release fungicide formulations were prolonged-action forms with a half-life of at least 50–60 d, enabling gradual and sustained delivery of the active ingredients to plants. All slow-release fungicide formulations had a strong inhibitory effect on the most common and harmful potato pathogens (Phytophthora infestans, Alternaria longipes, Rhizoctonia solani, and Fusarium solani).
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Zobov V. E., Moskvich Yu. N., Ponomarenko A. V.
Заглавие : Nonequidistant multipulse sequence for study of slow atomic motions in solids
Коллективы : Soviet-indian symposium on actual problems of magnetic resonance spectroscopy of inorganic materials, Академия наук СССР, Indian national academy of sciences, Академия наук Таджикской ССР
Место публикации : Proceedings of the 1st soviet-indian symposium on actual problems of magnetic resonance spectroscopy of inorganic materials. - Dushanbe, 1982. - P.204-205
Примечания : Библиогр.: 5
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Janoschek M., Fischer P., Schefer J., Roessli B., Pomjakushin V., Meven M., Petricek V., Petrakovskii G. A., Bezmaternykh L. N.
Заглавие : Single magnetic chirality in the magnetoelectric NdFe3((BO3)-B-11)(4)
Разночтения заглавия :авие SCOPUS: Single magnetic chirality in the magnetoelectric NdFe3( 11BO3 )4
Место публикации : Phys. Rev. B: AMER PHYSICAL SOC, 2010. - Vol. 81, Is. 9. - Ст.94429. - ISSN 1098-0121, DOI 10.1103/PhysRevB.81.094429
Примечания : Cited References: 55
Предметные рубрики: NEUTRON-DIFFRACTION
PHASE-TRANSITIONS
SLOW-NEUTRONS
CRYSTAL
NDFE3(BO3)(4)
EXTINCTION
NUCLEAR
ORDER
MNSI
ANTIFERROMAGNETS
Аннотация: We have performed an extensive study of single crystals of the magnetoelectric NdFe3 ((BO3)-B-11)(4) by means of a combination of single-crystal neutron diffraction and spherical neutron polarimetry. Our investigation did not detect significant deviations at low temperatures from space group R32 concerning the chemical structure. With respect to magnetic ordering our combined results demonstrate that in the commensurate magnetic phase below T-N approximate to 30 K all three magnetic Fe moments and the magnetic Nd moment are aligned ferromagnetically in the basal hexagonal plane but align antiferromagnetically between adjacent planes. The phase transition to the low-temperature incommensurate (IC) magnetic structure observed at T-IC approximate to 13.5 K appears to be continuous. By means of polarized neutron studies it could be shown that in the incommensurate magnetic phase the magnetic structure of NdFe3((BO3)-B-11)(4) is transformed into a long-period antiferromagnetic helix with single chirality. Close to the commensurate-incommensurate phase transition third-order harmonics were observed, which in addition indicate the formation of magnetic solitons.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bulgakov E. N., Pichugin K. N., Sadreev A. F.
Заглавие : All-optical light storage in bound states in the continuum and release by demand
Коллективы : Russian Scientific Foundation [14-12-00266]
Место публикации : Opt. Express: Optical Society of America, 2015. - Vol. 23, Is. 17. - P.22520-22531. - ISSN 1094-4087, DOI 10.1364/OE.23.022520
Примечания : Cited References: 45. - This work was supported by Russian Scientific Foundation through Grant 14-12-00266. We acknowledge discussions with D.N. Maksimov
Предметные рубрики: TRAPPED RAINBOW STORAGE
COUPLED-MODE THEORY
CRYSTAL WAVE-GUIDE
SLOW LIGHT
FANO RESONANCE
METAMATERIALS
MICROCAVITY
CAVITIES
Аннотация: In the framework of the temporal coupled mode theory we consider bound states embedded in the continuum (BSC) of photonic crystal waveguide as a capacity for light storage. A symmetry protected BSC occurs in two off-channel microresonators positioned symmetrically relative to the waveguide. We demonstrate that the symmetry protected BSC captures a fraction of a light pulse due to the Kerr effect as the pulse passes by the microresonators. However the amount of captured light is found to be strongly sensitive to the parameters of the gaussian light pulse such as basic frequency, duration and intensity. In contrast to the above case the BSC resulted from a full destructive interference of two eigenmodes of a single microresonator accumulates a fixed amount of light dependent on the material parameters of the microresonator but independent of the light pulse. The BSCs in the Fabry-Perot resonator show similar effects. We also show that the accumulated light can be released by a secondary pulse. These phenomena pave a way for all-optical storage and release of light. (C) 2015 Optical Society of America
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Arkhipkin V. G., Myslivets S. A.
Заглавие : Switching from normal to anomalous dispersion in photonic crystal with Raman gain defect
Место публикации : Opt. Lett.: Optical Society of America, 2014. - Vol. 39, Is. 7. - P.1803-1806. - ISSN 0146-9592, DOI 10.1364/OL.39.001803. - ISSN 1539-4794
Примечания : Cited References: 30. - This work was supported in part by the RAS Grants No. 24.29 and No. 24.31, by SB RAS Grants No. 43, No. 101, and by NSC of Taiwan and SB RAS through a joint project.
Предметные рубрики: FAST LIGHT-PROPAGATION
SLOW LIGHT
SUPERLUMINALITY
AMPLIFIER
CAVITY
SYSTEM
DELAY
Аннотация: Propagation of a light through a one-dimensional photonic crystal containing a defect layer doped with a Raman gain medium is discussed. We demonstrate all-optically controlled switching from normal to anomalous dispersion in such a structure. A group delay for the transmitted probe (Raman) pulse is investigated. We show that the group velocity of a Raman pulse can be tuned from subluminal to superluminal by varying the intensity of the pump field. (C) 2014 Optical Society of America
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Grigoriev P. D., Korshunov M. M., Mogilyuk T. I.
Заглавие : Slow in-plane magnetoresistance oscillations in multiband quasi-two-dimensional metals
Коллективы : RFBR [16-02-00522, 16-02-00098]; Leading Scientific Schools of the Russian Federation [NSh-2886.2014.2]
Место публикации : J. Supercond. Nov. Magn.: Springer, 2016. - Vol. 29, Is. 4. - P.1127-1132. - ISSN 1557-1939, DOI 10.1007/s10948-016-3373-x. - ISSN 1557-1947(eISSN)
Примечания : Cited References:73. - We are grateful to V.M. Pudalov, I. A. Nekrasov, and S.G. Ovchinnikov for useful discussions. We acknowledge the partial support by RFBR (Grants 16-02-00522 and 16-02-00098) and the President Grant for Government Support of the Leading Scientific Schools of the Russian Federation (NSh-2886.2014.2).
Предметные рубрики: High-temperature superconductivity
High magnetic-fields
Iron-based materials
Conductors
Localization
Weak
Ключевые слова (''Своб.индексиров.''): fermi surface--quantum oscillations--fe-based superconductors--slow--oscillations--magnetoresistance
Аннотация: Slow oscillations (SlO) of magnetoresistance is a convenient tool to measure electronic structure parameters in quasi-two-dimensional metals. We study the possibility to apply this method to multi-band conductors, e.g., to iron-based high-temperature superconducting materials. We show that SlO can be used to measure the interlayer transfer integral in multi-band conductors similar to single-band metals. In addition, the SlO allow to measure and compare the effective masses or the electron scattering rates in various bands.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Rubab N., Erkaev N. V., Langmayr D., Biernat H. K.
Заглавие : Kinetic Alfven wave instability in a Lorentzian dusty magnetoplasma
Коллективы :
Разночтения заглавия :авие SCOPUS: Kinetic Alfv́n wave instability in a Lorentzian dusty magnetoplasma
Место публикации : Phys. Plasmas: AMER INST PHYSICS, 2010. - Vol. 17, Is. 10. - Ст.103704. - ISSN 1070-664X, DOI 10.1063/1.3491336
Примечания : Cited References: 54. - This work is funded by the Higher Education Commission of Pakistan under the HEC-Overseas scholarship program Grant No. Ref: 1-1/PM OS /Phase-II/Batch-I/Austria/2007/. Part of this work was done while N. V. Erkaev was at the Space Research Institute of the Austrian Academy of Sciences in Graz. This work is also supported due to the RFBR Grant No. 09-05-91000-ANF-a. Further support is due to the "Austrian Fonds zur Forderung der Wissenschaftlichen Forschung" under Grant No. P20145-N16.
Предметные рубрики: MAXWELLIAN DISTRIBUTION-FUNCTIONS
FREQUENCY ELECTROMAGNETIC-WAVES
SOLAR-WIND
CHARGE FLUCTUATION
2-STREAM INSTABILITIES
ELECTROSTATIC MODES
SPACE PLASMAS
ION PLASMA
TEMPERATURE
PROPAGATION
Ключевые слова (''Своб.индексиров.''): analytical expressions--dispersion relations--distributed streaming--dust acoustic--dust particle--growth rate of instabilities--magnetized electrons--n-waves--potential theory--slow motion--streaming velocity--theoretical approach--two stream instability--whistler waves--dust--magnetic field effects--plasma waves--stability--acoustic wave propagation
Аннотация: This study presents a theoretical approach to analyze the influence of kappa distributed streaming ions and magnetized electrons on the plasma wave propagation in the presence of dust by employing two-potential theory. In particular, analytical expressions under certain conditions are derived for various modes of propagation comprising of kinetic Alfven wave streaming instability, two stream instability, and dust acoustic and whistler waves. A dispersion relation for kinetic Alfven-like streaming instability has been derived. The effects of dust particles and Lorentzian index on the growth rates and the threshold streaming velocity for the excitation of the instability are examined. The streaming velocity is observed to be destabilizing for slow motion and stabilizing for fast streaming motions. It is also observed that the presence of magnetic field and superthermal particles hinders the growth rate of instability. Possible applications to various space and astrophysical situations are discussed. (C) 2010 American Institute of Physics. [doi:10.1063/1.3491336]
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