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Processing of detonation diamonds with metal-containing high-frequency arc plasma and their properties / G. N. Churilov [et al.] // Fuller. Nanotub. Carbon Nanostruct. - 2012. - Vol. 20, Is. 4/7 SI. - P. 611-615, DOI 10.1080/1536383X.2012.657014. - Cited References: 5. - The work was partially supported by RFBR foundation (project 09-03-00383). . - ISSN 1536-383X

РУБ Chemistry, Physical + Nanoscience & Nanotechnology + Materials Science, Multidisciplinary + Physics, Atomic, Molecular & Chemical

Кл.слова (ненормированные):
Nanodiamond -- nanoparticle -- metal-containing plasma
Аннотация: This paper describes coating of diamond powder with metal by plasma. Arc plasma was generated in double jet high-frequency argon-operated plasmatron with atomized metal inserts. The diamond powder was added to the plasma in a flow of helium. Copper and nickel coated particles of detonation and industrial diamonds were studied by XRD, XPS, SEM methods and electron magnetic resonance. Results of these studies are presented.

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Держатели документа:
[Churilov, G. N.
Osipova, I. V.
Vnukova, N. G.
Glushenko, G. A.
Petrakovskaya, E. A.] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
[Kolonenko, A. L.
Chiganov, A. S.] Krasnoyarsk State Pedag Univ, Krasnoyarsk, Russia
[Tomashevich, Ye. V.
Zhizhaev, A. M.] Russian Acad Sci, Siberian Branch, Inst Chem & Chem Technol, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Churilov, G. N.; Чурилов, Григорий Николаевич; Osipova, I. V.; Осипова, Ирина Владимировна; Vnukova, N. G.; Внукова, Наталья Григорьевна; Glushchenko, G. A.; Глущенко, Гарий Анатольевич; Petrakovskaya, E. A.; Петраковская, Элеонора Анатольевна; Kolonenko, A. L.; Колоненко, Андрей Леонидович; Chiganov, A. S.; Tomashevich, Y. V.; Томашевич, Евгений Владимирович; Zhyzhaev, A. M.; Жижаев, Анатолий Михайлович
}
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    Развитие математического описания микромагнитной модели ферромагнетика на принципах цифровых систем обработки сигналов / А. В. Изотов [и др.] // Изв. вузов. Физика. - 2013. - Т. 56, № 8/2. - С. 217-220. - Работа выполнена при финансовой поддержке Министерства образования и науки РФ, Госконтракт № 14.513.11.0010, и ФЦП «Научные и научно-педагогические кадры инновационной России 2009−2013 гг.»
   Перевод заглавия: Development of the mathematical description of micromagnetic model of a ferromagnetic on principles of digital systems for signal processing
Кл.слова (ненормированные):
теория микромагнетизма -- цифровая обработка сигналов -- равновесное распределение намагниченности -- микромагнитное моделирование -- micromagnetics -- digital signal processing -- equilibrium magnetization -- micromagnetic simulation
Аннотация: Дано обоснование возможности интеграции методов и техники цифровой обработки сигналов в приложениях теории микромагнетизма. Показано, что математическое описание микромагнитной модели ферромагнетика эквивалентно описанию магнитной системы, представленной в виде последовательного соединения двух многомерных многоканальных фильтров: линейного частотного и нелинейного пространственного.
The paper presents a rationale for integration of methods and techniques of digital signal processing in applications of the micromagnetism theory. It is shown that the mathematical description of the micromagnetic model of a ferromagnetic is equivalent to describing the magnetic system, represented as a series connection of two-dimensional multi-channel filters: the linear frequency and nonlinear spatial filters.

Держатели документа:
Институт физики им. Л.В. Киренского СО РАН

Доп.точки доступа:
Изотов, Андрей Викторович; Izotov, A.V.; Беляев, Борис Афанасьевич; Belyaev, B. A.; Сержантов, Алексей Михайлович; Serzhantov, A.M.; Валиханов, М. М.; Боев, Н. М.; Поленга, С. В.
}
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    Fundamental basis of production and application of biodegradable polyhydroxyalkanoates / T. G. Volova [et al.] // J. Sib. Fed. Univ. Biol. - 2012. - Vol. 5, Is. 3. - P. 280-299 ; Журн. СФУ. Сер. "биология"
   Перевод заглавия: Фундаментальные основы производства и применения биодеградируемых полигидроксиалканоатов
Кл.слова (ненормированные):
biopolymers -- polyhydroxyalkanoates -- substrates -- synthesis -- properties -- processing -- biomedical applications -- биополимеры -- полигидроксиалканоаты -- субстраты -- синтез -- свойства -- обработка -- медико-биологическое применение
Аннотация: Microbial polyhydroxyalkanoates (PHAs) have long been studied due to their potential for replacement of petroleum-based plastic. The study addresses the effect of different conditions of carbon nutrition on synthesis of polyhydroxyalkanoates by the bacterium Ralstonia eutropha. First and foremost, PHAs are carbon storage compounds for many organisms. There are still many aspects of the physiology of PHA accumulation and degradation that are still not understood. Measurements of key P3HBrelated enzyme activities throughout cell growth reveal correlations of acetoacetyl-CoA reductase and synthase enzyme activity maxima with P3HB biosynthesis. The investigation addressed kinetic parameters of growth and accumulation of polyhydroxyalkanoates and gas exchange parameters of the culture of the CO-resistant strain of the hydrogen bacteria Ralstonia eutropha B 5786 cultivated on synthesis gas - a product of gasification of brown coals. The results were compared with those obtained by growing the bacteria on electrolytic hydrogen and it was concluded that synthesis gas can be successfully used to produce PHAs. In experiments with wild-type strain it has been first found that under mixotrophic growth conditions - CO2 + co-substrate (alcanoic acids) - bacteria can synthesize multi-component PHAs, consisting of short- and medium-chain-length monomers with carbon chains containing 4 to 8 atoms. It has been shown that PHA composition is determined by the type of the co-substrate. Fatty acids with odd number of carbons induce bacteria to synthesize multi-component PHAs with 3-hydroxybutyrate, 3-hydroxyvalerate, and 3-hydroxyhexanoate as major monomers and 3-hydroxyheptanoate and 3-hydroxyoctanoate as minor, occasionally occurring, ones. Fatty acids with even number of carbons induce synthesis of not only their respective monomers (3-hydroxyhexanoate and 3-hydroxyoctanoate) but also 3-hydroxyvalerate, making possible synthesis of four-component PHAs, containing 3-hydroxybutyrate and 3-hydroxyhexanoate as major components. A family of short- and medium-chain-length four- and five-component PHAs has been synthesized and their physicochemical and biomedical-properties examined.
Полигидроксиалканоаты (ПГА) - перспективные материалы, которые могут заменить пластмассы на углеводородной основе, и они исследуются уже в течение длительного времени. Данная работа рассматривает воздействие различных условий углеродного питания на синтез полигидроксиалканоатов бактериями Ralstonia eutropha. Прежде всего ПГА являются запасными веществами для многих организмов. Многие аспекты физиологии накопления и разрушения ПГА остаются пока не изученными. Измерение активности ключевых ферментов 3ПГБ на протяжении роста клетки показывает связь максимумов активности ацетоацетил-КоА редуктазы и синтазы с биосинтезом 3ПГБ. Были исследованы кинетические параметры роста и накопления полигидроксиалканоатов и параметры газообмена культуры штамма водородных бактерий Ralstonia eutropha B 5786, устойчивого к СО, при культивировании на синтез-газе - продукте газификации бурых углей. Проведено сравнение полученных результатов с данными, полученными при выращивании бактерий на электролитическом водороде, и показано, что синтез-газ может успешно применяться для получения ПГА. В экспериментах с природным штаммом бактерий впервые было показано, что при миксотрофных условиях роста - CO2 + дополнительный субстрат (алкановые кислоты) - бактерии способны синтезировать многокомпонентные ПГА, состоящие из коротко- и среднецепочечных мономеров с длиной цепи от 4 до 8 атомов углерода. Показано, что состав ПГА зависит от типа дополнительного субстрата. Жирные кислоты с нечётным количеством атомов углерода стимулируют бактерии синтезировать многокомпонентные ПГА, состоящие из таких основных компонентов, как 3-гидроксибутират, 3-гидроксивалерат и 3-гидроксигексаноат, и второстепенных, эпизодических компонентов: 3-гидроксигептаноата и 3-гидроксиоктаноата. Жирные кислоты с чётным количеством атомов углерода стимулируют синтез как соответствующих им мономеров (3-гидроксигексаноата и 3-гидроксиоктаноата), так и 3-гидроксивалерата, что позволяет получать четырёхкомпонентные ПГА, содержащие 3-гидроксибутират и 3-гидроксигексаноат в качестве основных компонентов. Было синтезировано семейство коротко- и среднецепочечных четырёх- и пятикомпонентных ПГА и проведено исследование их физико-химических и медико-биологических свойств.

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Доп.точки доступа:
Volova, T. G.; Волова, Татьяна Григорьевна; Shishatskaya, E. I.; Шишацкая, Екатерина Игоревна; Zhila, N. O.; Жила, Наталья Олеговна; Киселев, Евгений Геннадьевич; Kiselev, E. G.; Mironov, P. V.; Vasil'ev, A. D.; Васильев, Александр Дмитриевич; Peterson, I. V.; Петерсон, Иван Викторович; Sinskey, A. J.

}
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    Влияние фотонной обработки и температуры на проводимость In2O3 пленок, полученных автоволновым окислением / И. А. Тамбасов [и др.] // Вестник СибГАУ. - 2013. - № 3. - С. 103-106. - Работа выполнена частично при финансовой поддержке ФЦП «Исследования и разработки по приоритетным направлениям развития научно-технологичного комплекса России на 2007-2013 годы» (госконтракт № 14.513.11.0023), а также Министерства образования и науки Российской Федерации (договор № 02.G25.31.0043) . - ISSN 1816-9724
   Перевод заглавия: The impact of the photon processing and temperature on the conductivity of In2O3 films produed with autowave oxidation
Кл.слова (ненормированные):
ТОНКИЕ ПЛЕНКИ -- ОКСИД ИНДИЯ -- АВТОВОЛНОВОЕ ОКИСЛЕНИЕ -- УЛЬТРАФИОЛЕТОВОЕ ОБЛУЧЕНИЕ -- THIN FILMS -- INDIUM OXIDE -- AUTO-WAVE OXIDATION -- ULTRAVIOLET IRRADIATION
Аннотация: Пленки оксида индия были синтезированы автоволновой реакцией окисления на покровном стекле, кварце и монокристалле MgO. Толщина пленки измерялась с помощью режима «cross-section» сканирующего электронного микроскопа и составляла ~300 нм. Оптическая ширина запрещенной зоны оксида индия была ~3.5 эВ. Исследования сопротивления In2O3 пленки от температуры в теневых условиях показали, что при нагревании до 100 0С сопротивление увеличивается на ~10 %. Показано, что при фотооблучении происходит резкое уменьшение электрического сопротивления пленок, максимальное изменение которого составило 52 % при комнатной температуре. Определены две скорости релаксации сопротивления пленок после прекращения облучения 15 Ом/сек первые 30 сек и 7 Ом/сек в остальное время. Сделано предположение, что фотовосстановление является доминирующим механизмом, ответственным за изменения проводимости пленок.
Indium oxide films were synthesized by auto-wave oxidation reaction on the cover glass, quartz and single crystal MgO. The film thickness was measured with a mode «cross-section» scanning electron microscope and was ~ 300 nm. Optical band gap of indium oxide was ~3.5 eV. The study of In2O3 film resistance versus temperature in the dark conditions showed that when heated to 100 °C the resistance increases by about 10 %. It is shown that the_ films electric resistance decreases sharply under photo radiation and the maximum change was 52 % at room temperature. The two film resistance relaxation rates after irradiation have been determined to be 15 Ohm/s the first 30 seconds and 7 Оhm/s f for the rest, respectively. On the basis of the above stated the authors suggest that the photo reduction is the dominant mechanism responsible for the changes in conductivity of In 2O 3 films.

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Институт физики им. Л.В. Киренского СО РАН

Доп.точки доступа:
Тамбасов, Игорь Анатольевич; Tambasov, I.A.; Немцев, Иван Васильевич; Nemtsev, I.V.; Савранский, Д. С.; Мацынин, Алексей Александрович; Matsynin, A.A.; Ежикова, Е. В.
}
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Moiseenko, E. T.
Solid-state synthesis and atomic ordering in thin Cu/Au films (Atomic Ratio, Cu : Au = 3 : 1) / E. T. Moiseenko, R. R. Altunin, S. M. Zharkov // Bull. Russ. Acad. Sci.: Phys. - 2012. - Vol. 76, Is. 10. - P. 1149-1151, DOI 10.3103/S1062873812100073 . - ISSN 1062-8738
Кл.слова (ненормированные):
Atomic ordering -- Atomic ratio -- Bi-layer -- In-situ transmission -- Nano films -- Solid-state synthesis -- Space Groups -- Atoms -- Gold -- In situ processing -- Transmission electron microscopy -- Copper
Аннотация: In situ transmission electron microscopy investigations of the processes of solid-state synthesis and atomic ordering in bilayer Cu/Au nanofilms (atomic ratio, Cu : Au = 3 : 1) are conducted. It is found that solid-state synthesis starts at 170В°C. A Cu 3Au atomic-disordered structure (Fm3m space group; lattice con- stant, a = 3.76 В± 0.01 A) forms at 280В°C. Annealing the film for 1 hour at 380В°C produced a Cu 3AuI (L1 2 type) atomic-ordered superstructure, a Pm-3m space group, and lattice constant, a = 3.76 В± 0.01 a in the bulk of the film.

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Публикация на русском языке Моисеенко, Евгений Тимофеевич. Твердофазный синтез и атомное упорядочение в тонкопленочной системе Cu/Au (атомное соотношение Cu : Au = 3 : 1) [Текст] / Е. Т. Моисеенко, Р. Р. Алтунин, С. М. Жарков // Изв. РАН. Сер. физич. - 2012. - Т. 76 № 10. - С. 1279-1282

Держатели документа:
L.V. Kirensky Institute of Physics, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Altunin, R. R.; Алтунин, Роман Русланович; Zharkov, S. M.; Жарков, Сергей Михайлович; Моисеенко, Евгений Тимофеевич
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    Enhancing coherent nonlinear-optical processes in nonmagnetic backward-wave materials / A. K. Popov [et al.] // Appl. Phys. A. - 2012. - Vol. 109, Is. 4. - P. 835-840, DOI 10.1007/s00339-012-7390-8. - Cited References: 35. - This work was supported in part by the U.S. National Science Foundation under Grant No. ECCS-1028353, by the US Air Force Office of Scientific Research under Grant No. FA9550-12-1-298; by the Presidium of the Russian Academy of Sciences under Project No. 24.31, by the Ministry of Science under Federal Research Program No. 14.V37.21.0730 and by the Siberian Division of the Russian Academy of Sciences and Siberian Federal University under Integration Project No. 101; and by the Academy of Finland and Nokia through the Center-of-Excellence program. . - ISSN 0947-8396
Рубрики:
NEGATIVE-INDEX METAMATERIALS
   LEFT-HANDED METAMATERIALS
   2ND-HARMONIC GENERATION
   PARAMETRIC AMPLIFICATION
   COMPENSATING LOSSES
   OSCILLATOR
Аннотация: Novel concepts of nonlinear-optical (NLO) photonic metamaterials (MMs) are proposed. They concern with greatly enhanced coherent NLO energy exchange between ordinary and backward waves (BWs) through the frequency-conversion processes. Two different classes of materials which support BWs are considered: crystals that support optical phonons with negative group velocity and MMs with specially engineered spatial dispersion. The possibility to replace plasmonic NLO MMs enabling magnetic response at optical frequencies, which are very challenging to engineer, by the ordinary readily available crystals, are discussed. The possibility to mimic extraordinary NLO frequency-conversion propagation processes attributed to negative-index MMs (NIMs) is shown in some of such crystals, if optical phonons with negative group velocity and a proper phase-matching geometry are implemented. Here, optical phonons are used as one of the coupled counterparts instead of backward electromagnetic waves (BEMWs). The appearance of BEMWs in metaslabs made of carbon nanotubes, the possibilities and extraordinary properties of BW second harmonic generation in such MMs is another option of nonmagnetic NIMs, which is described too. Among the applications of the proposed photonic materials is the possibility of creation of a family of unique BW photonic devices such as frequency doubling metamirror and Raman amplifiers with greatly improved efficiency.

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Доп.точки доступа:
Popov, A. K.; Shalaev, M. I.; Myslivets, S. A.; Мысливец, Сергей Александрович; Slabko, V. V.; Слабко, Виталий Васильевич; Nefedov, I. S.; International conference on metamaterials, photonic crystals and plasmonics(3 ; 2012 ; 19-22 apr ; Paris, France)
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Unidirectional amplification and shaping of optical pulses by three-wave mixing with negative phonons / A. K. Popov [et al.] // Appl. Phys. A. - 2013. - Vol. 115, Is. 2. - P. 523-529, DOI 10.1007/s00339-013-8078-4. - Cited References: 32. - This work was supported in parts by the US Air Force Office of Scientific Research under Grant No. FA950-12-1-298, by the US National Science Foundation under Grant No. ECCS-1028353, by the Presidium of the Russian Academy of Sciences under Grant No. 24-31 and by the Russian Federal Program on Science, Education and Innovation under Grant No. 14.A18.21.1942. . - ISSN 0947-8396. - ISSN 1432-0630

РУБ Materials Science, Multidisciplinary + Physics, Applied
Рубрики:
LEFT-HANDED METAMATERIALS
   2ND-HARMONIC GENERATION
   INDEX METAMATERIALS
   NONLINEAR OPTICS
   PARAMETRIC AMPLIFICATION
   COMPENSATING LOSSES
   BACKWARD WAVES
   OSCILLATOR
   CRYSTALS
Аннотация: A possibility to greatly enhance frequency-conversion efficiency of stimulated Raman scattering is shown by making use of extraordinary properties of three-wave mixing of ordinary and backward waves. Such processes are commonly attributed to negative-index plasmonic metamaterials. This work demonstrates the possibility to replace such metamaterials that are very challenging to engineer by readily available crystals which support elastic waves with contra-directed phase and group velocities. The main goal of this work was to investigate specific properties of indicated nonlinear optical process in short-pulse regime and to show that it enables elimination of fundamental detrimental effect of fast damping of optical phonons on the process concerned. Among the applications is the possibility of creation of a family of unique photonic devices such as unidirectional Raman amplifiers and femtosecond pulse shapers with greatly improved operational properties.

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Держатели документа:
Univ Wisconsin, Stevens Point, WI 54481 USA
Purdue Univ, Birck Nanotechnol Ctr, W Lafayette, IN 47907 USA
Siberian Fed Univ, Krasnoyarsk 660041, Russia
Russian Acad Sci, Inst Phys, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Popov, A. K.; Попов, Александр Кузьмич; Shalaev, M. I.; Шалаев, Михаил Игоревич; Myslivets, S. A.; Мысливец, Сергей Александрович; Slabko, V. V.; Слабко, Виталий Васильевич; US Air Force Office of Scientific Research [FA950-12-1-298]; US National Science Foundation [ECCS-1028353]; Presidium of the Russian Academy of Sciences [24-31]; Russian Federal Program on Science, Education and Innovation [14.A18.21.1942]
}
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Shauro, V. P.
Exact solutions for time-optimal control of spin I=1 by NMR / V. Shauro // Quantum Inf. Process. - 2015. - Vol. 14, Is. 7. - P. 2345-2355, DOI 10.1007/s11128-015-0999-8. - Cited References:34. - The author thanks V.E. Zobov for fruitful discussions. This study was supported by the Russian Foundation for Basic Research, Project No. 14-07-31086. . - ISSN 1570. - ISSN 1573-1332. -

РУБ Physics, Multidisciplinary + Physics, Mathematical
Рубрики:
QUANTUM COMPUTATION
SYSTEMS
Кл.слова (ненормированные):
Quantum gate -- Qutrit -- Time-optimal control -- Nuclear magnetic resonance
Аннотация: We consider the problem of time-optimal control of quadrupole nucleus with the spin I = 1 by NMR. In contrast to the conventional methods based on selective pulses, the control is implemented using nonselective pulses separated by free-evolution intervals. Using the Cartan decomposition, the system of equations is obtained for finding parameters of a control field. Partial time-optimal solutions for the important single-qutrit gates (selective rotations and quantum Fourier transform) are found. The strong dependence of minimum gate implementation times on global phase of the gate is observed. The analytical values of minimum times are consistent with the numerical data.

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Шауро, Виталий Павлович; Russian Foundation for Basic Research [14-07-31086]
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    Effects of processing parameters on the morphology, structure, and magnetic properties of Cu1-xFexCr2Se4 nanoparticles synthesized with chemical methods / R. D. Ivantsov [et al.] // J. Alloys Compd. - 2015. - Vol. 650. - P. 887-895, DOI 10.1016/j.jallcom.2015.08.017. - Cited References: 36. - The paper was partially supported by the Russian Foundation for Basic Research (grant #14-02-01211), by the President of Russia (grant #NSh-2886.2014.2), and by the Ministry of Education and Science of the Russian Federation (grant #2014/71/1763 in the framework of the state assignment for the Siberian Federal University for 2014-2016). We also thank the Ministry of Science and Technology of Taiwan and the Siberian Branch of RAS (MOST 102-2112-M-153 -002 -MY3) for financial support. . - ISSN 0925-8388
   Перевод заглавия: Влияние параметров получения на морфологию, структуру и магнитные свойства наночастиц Cu1-xFexCr2Se4, синтезированных химическими методами

РУБ Chemistry, Physical + Materials Science, Multidisciplinary + Metallurgy & Metallurgical Engineering
Рубрики:
CuCr2Se4 SINGLE-CRYSTALS
   TRANSPORT-PROPERTIES
   CHROMIUM SPINELS
   NANOSTRUCTURES
   DIFFRACTION
   Li
Кл.слова (ненормированные):
Copper selenide -- Magnetic nanoparticles -- Visible magnetic circular dichroism
Аннотация: Cu1-xFexCr2Se4 nanoparticles with x = 0, 0.2, and 0.4 were synthesized via thermal decomposition of metal nitrate or chloride salts and selenium powder using different precursor compositions and processing details. Single crystalline nano-belts or nano-rods coexist in the synthesized powder samples with hexagon-shaped plates in dependence on the precursor composition. The belts gathered into conglomerates forming "hierarchical" particles. Visible magnetic circular dichroism (MCD) of Cu1-xFexCr2Se4 nanoparticles embedded into a transparent matrix was investigated for the first time. The similarity of the MCD spectra of all samples showed the similarity of the nanoparticles electronic structure independent of their morphology. Basing on the MCD spectral maxima characteristics, electron transitions from the ground to the excited states were identified with the help of the conventional band theory and the multi-electron approach. © 2015 Elsevier B.V.

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Держатели документа:
Kirensky Institute of Physics, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
National Pingtung University, Pingtung City, Pingtung County, Taiwan

Доп.точки доступа:
Ivantsov, R. D.; Иванцов, Руслан Дмитриевич; Edelman, I. S.; Эдельман, Ирина Самсоновна; Zharkov, S. M.; Жарков, Сергей Михайлович; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Petrov, D. A.; Петров, Дмитрий Анатольевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Lin, C.-R.; Li, O.; Tseng, Y.-T.
}
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10.

Ruzicka, Z.
Database approach to develop and validate the Soil Moisture and temperature retrieval algorithm using SMOS radiometric data / Z. Ruzicka, K. V. Muzalevskiy // Int. Sib. Conf. on Control and Communicat. (SIBCON 2015) : Proceedings : IEEE-Institute Electrical and Electronics Engineers, 2015, DOI 10.1109/SIBCON.2015.7146965 . - ISBN 9781479971022 (ISBN)
Кл.слова (ненормированные):
Arctic tundra -- Database management system -- SMOS -- Soil moisture -- Soil temperature -- Algorithms -- Data handling -- Database systems -- Information systems -- Management information systems -- MATLAB -- Moisture -- Numerical methods -- Radiometry -- Soil moisture -- Soil surveys -- Soils -- Temperature -- Arctic tundra -- Automated processing -- North Slope of Alaska -- Retrieval algorithms -- SMOS -- Soil Moisture and Ocean Salinity (SMOS) -- Soil temperature -- Temperature retrieval -- Search engines
Аннотация: This paper describes the information system, which has been developed for the storing and automated processing of the Soil Moisture and Ocean Salinity (SMOS) Level 1C radiometric and Level 2 soil moisture data over space and time. The information system contains the database for storing the data and the interface for automated processing. That interface has been developed to provide access to these specific data from the database within the Matlab numerical computing environment used for the realization of algorithms and methods. The developed information system helps to speed up the processing of SMOS data in regional scale over a long period of time, and has successfully been used for the validation of soil temperature and moisture retrieval algorithms over the North Slope of Alaska and Yamal peninsula. © 2015 IEEE.

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Доп.точки доступа:
Muzalevskiy, K. V.; Музалевский, Константин Викторович; Ружичка, Зденек; International Siberian Conference on Control and Communications(11 ; 2015 ; May 21-23 ; Omsk)
}
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11.

Popov, A. K.
Nonlinear-optical frequency-doubling metareflector: pulsed regime / A. K. Popov, S. A. Myslivets // Appl. Phys. A. - 2016. - Vol. 122, Is. 1. - P. 1-6, DOI 10.1007/s00339-015-9534-0. - Cited References: 20. - This material is based upon work supported in part by the US Army Research Laboratory and the US Army Research Office under Grant Number W911NF-14-1-0619, by the National Science Foundation under Grant Number ECCS-1346547 and by the Russian Foundation for Basic Research under Grant RFBR 15-02-03959A. We thank I. S. Nefedov, A. E. Boltasseva, and V. M. Shalaev for inspiring inputs. . - ISSN 0947-8396

РУБ Materials Science, Multidisciplinary + Physics, Applied
Рубрики:
NEGATIVE-INDEX METAMATERIALS
   LEFT-HANDED METAMATERIALS
   2ND-HARMONIC GENERATION
   PARAMETRIC AMPLIFICATION
Аннотация: The properties of backward-wave second-harmonic metareflector operating in pulse regime are investigated. It is made of metamaterial which enables phase matching of contra-propagating fundamental and second-harmonic waves. References are given to the works that prove such a possibility. Physical principles underlying differences in the proposed and standard settings as well as between continuous-wave and pulsed regimes are discussed. Pulsed regime is more practicable and has a broader scope of applications. A set of partial differential equations which describe such a reflector with the account for losses are solved numerically. It is shown that unlike second-harmonic generation in standard settings, contra-propagating pulse of second harmonic may become much longer than the incident fundamental one and the difference grows with decrease in the input pulse length as compared to thickness of the metaslab. The revealed properties are important for applications and may manifest themselves beyond the optical wavelength range.

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Birck Nanotechnology Center, Purdue University, West Lafayette, IN, United States
Institute of Physics, Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Myslivets, S. A.; Мысливец, Сергей Александрович
}
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12.

Gokhfeld, D. M.
Asymmetric hysteresis loops, critical current and scale / D. M. Gokhfeld // 9th International Workshop on Processing and Applications of Superconducting (RE)BCO Large Grain Materials (PASREG 2015) : book of abstacts. - 2015. - P65

Материалы конференции

Доп.точки доступа:
Гохфельд, Денис Михайлович; International workshop on processing and applications of superconducting (RE)BCO large grain materials(9 ; 2015 ; sept. ; 2-4 ; Liège, Belgium)
}
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13.

    Молостов, Илья Петрович.
    Применение технологии NVIDIA CUDA для численного моделирования распространения электромагнитных импульсов / И. П. Молостов, В. В. Щербинин // Известия АлтГУ. - 2015. - Т. 1, Вып. 1. - С. 39-43, DOI 10.14258/izvasu(2015)1.1-06. - Библиогр.: 7 . - ISSN 1561-9443
   Перевод заглавия: Application of NVIDIA CUDA technology for numerical simulation of electromagnetic pulses propagation
Кл.слова (ненормированные):
распространение электромагнитных импульсов -- вычисления общего назначения на графических процессорах -- electromagnetic pulse propagation -- general-purpose graphics processing units
Аннотация: Рассмотрено численное решение задачи распространения электромагнитного импульса в двумерной прямоугольной области, ограниченной идеально проводящими стенками, содержащей идеально проводящий объект произвольной формы. Вычислительный алгоритм реализован на основе метода конечных разностей во временной области с использованием программно-аппаратной технологии МУ1Б1Л СиБЛ. Исследованы особенности реализации метода конечных разностей для расчетов на графическом процессоре, в частности рассмотрен способ организации хранения в видеопамяти массивов значений компонент поля в точках дискретизированного пространства. Представлены численные результаты моделирования рассеяния импульса с плоским фронтом в квадратной области, содержащей цилиндрический объект. Проведен сравнительный анализ производительности разработанного алгоритма при выполнении на центральном и графическом процессорах. Показано, что для данного алгоритма применение вычислений на графических процессорах обеспечивает существенный прирост производительности.
In this paper, a numerical solution of electromagnetic pulse propagation for the case of two-dimensional rectangular area bounded by perfectly conducting walls with included perfectly conducting various-shape object has been considered. A numerical algorithm has been developed using finite difference in time-domain with NVIDIA CUDA technology implementation. A finite difference method implementation for the case of computation by graphical processor has been considered. The results of numerical modeling of a plane wave pulse scattering in the square waveguide with included cylindrical object has been shown. Comparative analysis of the performance for CPU and GPU has been carried out. It is shown, that the FDTD method computation by graphical processor provides a sufficient gain in the performance.

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Держатели документа:
Институт физики им. Л.В. Киренского СО РАН

Доп.точки доступа:
Щербинин, Всеволод Владиславович; Scherbinin, V. V.; Molostov I. P.
}
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14.

    Ultrafine particles derived from mineral processing: A case study of the Pb-Zn sulfide ore with emphasis on lead-bearing colloids / Y. Mikhlin [et al.] // Chemosphere. - 2016. - Vol. 147. - P. 60-66, DOI 10.1016/j.chemosphere.2015.12.096. - Cited References: 47. - This research was supported by the Russian Science Foundation, Grant No. 14-17-00280. . - ISSN 0045-6535
   Перевод заглавия: Ультрадисперсные частицы, полученные при переработке минерального сырья: комплексный анализ колчеданной руды Pb-Zn и коллоидных частиц, содержащих свинец

РУБ Environmental Sciences
Рубрики:
GALENA DISSOLUTION
   METALLIC COPPER
   NANOPARTICLES
   SOIL
   ENVIRONMENT
   SEPARATION
   TRANSPORT
   FLOTATION
   WATER
   SIZE
Кл.слова (ненормированные):
Lead sulfide -- Lead-zinc ore -- Lead sulfide -- Ultrafine particles -- Aquatic nanoparticles
Аннотация: Although mining and mineral processing industry is a vast source of heavy metal pollutants, the formation and behavior of micrometer- and nanometer-sized particles and their aqueous colloids entered the environment from the technological media has received insufficient attention to date. Here, the yield and characteristics of ultrafine mineral entities produced by routine grinding of the Pb-Zn sulfide ore (Gorevskoe ore deposit, Russia) were studied using laser diffraction analysis (LDA), dynamic light scattering (DLS) and zeta potential measurement, microscopy, X-ray photoelectron spectroscopy, with most attention given to toxic lead species. It was revealed, in particular, that the fraction of particles less that 1 ?m in the ground ore typical reaches 0.4 vol. %. The aquatic particles in supernatants were micrometer size aggregates with increased content of zinc, sulfur, calcium as compared with the bulk ore concentrations. The hydrodynamic diameter of the colloidal species decreased with time, with their zeta potentials remaining about -12 mV. The colloids produced from galena were composed of 20-50 nm PbS nanoparticles associated with lead sulfate and thiosulfate, while the surface oxidation products at precipitated galena were largely lead oxyhydroxides. The size and zeta potential of the lead-bearing colloids decreased with time down to about 100 nm and from -15 mV to -30 mV, respectively. And, conversely, lead sulfide nanoparticles were mobilized before the aggregates during redispersion of the precipitates in fresh portions of water. The potential environmental impact of the metal-bearing colloids, which is due to the large-scale production and relative stability, is discussed. © 2015 Elsevier Ltd.

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Держатели документа:
Inst. of Chemistry and Chemical Technology, Siberian Branch of the Russian Academy of Sciences, Akademgorodok, 50/24, Krasnoyarsk, Russian Federation
Siberian Federal University, Svobodny pr. 79, Krasnoyarsk, Russian Federation
Kirensky Institute of Physics, Siberian Branch of the Russian Academy of Sciences, Akademgorodok 50/38, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Mikhlin, Y.; Vorobyev, S.; Romanchenko, A.; Karasev, S.; Karacharov, A.; Zharkov, S. M.; Жарков, Сергей Михайлович
}
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15.

REM-containing silicate concentrates / V. F. Pavlov [et al.] // IOP Conf. Ser.: Mater. Sci. Eng. : IOP Publishing, 2016. - Vol. 112, Is. 1, DOI 10.1088/1757-899X/112/1/012030
Кл.слова (ненормированные):
Aluminosilicates -- Rare earth elements -- Rare earths -- Silicates -- A-stable -- Aluminosilicate materials -- Chemical compositions -- Complex processing -- Ferromanganese oxides -- Mineral acid -- Rare earth metals -- X-ray amorphous -- Geochemistry
Аннотация: A new method of advanced complex processing of ores containing rare-earth elements (REE) is proposed to obtain porous X-ray amorphous aluminosilicate material with a stable chemical composition which concentrates oxides of rare-earth metals (REM). The ferromanganese oxide ores of Chuktukon deposit (Krasnoyarsk Region, RF) were used for the experiment. The obtained aluminosilicate material is appropriate for treatment with 5 - 15% solutions of mineral acids to leach REM. © Published under licence by IOP Publishing Ltd.

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Доп.точки доступа:
Pavlov, V. F.; Павлов, Вячеслав Фролович; Shabanova, O. V.; Шабанова О. В.; Pavlov, I. V.; Павлов И. В.; Pavlov, M. V.; Павлов М. В.; Shabanov, V. F.; Шабанов, Василий Филиппович; International symposium on fundamental aspects of rare-earth elements mining and separation and modern materials engineering(2 ; 2015 ; Sept. ; 7-15)
}
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16.

Gokhfeld, D. M.
Critical current density and trapped field in HTS with asymmetric magnetization loops / D. Gokhfeld // J. Phys. Conf. Ser. - 2016. - Vol. 695, Is. 1. - Ст. 012008, DOI 10.1088/1742-6596/695/1/012008. - Cited References: 19 . - ISSN 1742-6588
Кл.слова (ненормированные):
Critical current density (superconductivity) -- Critical currents -- Current density -- Critical state models -- Field dependence -- Grain size -- Hysteresis curve -- Magnetization loops -- Superconducting grains -- Trapped field -- Trapped magnetic field -- Superconducting materials
Аннотация: Applications of the extended critical state model are considered. The trapped magnetic field, the penetration field and the field dependence of the critical current density are analysed. The critical current density and the trapped field in superconducting grains depend on the grain size. Asymmetry of the hysteresis curves relative to the M = 0 axis is related to the scale of the current circulation. © Published under licence by IOP Publishing Ltd.

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Доп.точки доступа:
Гохфельд, Денис Михайлович; International Workshop on Processing and Applications of Superconducting (RE)BCO Large Grain Materials(9th ; 2 - 4 Sept. 2015)
}
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17.

Thermal expansion, phase diagrams and barocaloric effects in (NH4)(2)NbOF5 / M. . Gorev [et al.] // J. Phys.: Condens. Matter. - 2010. - Vol. 22, Is. 18. - Ст. 185901, DOI 10.1088/0953-8984/22/18/185901. - Cited References: 17. - This work was supported in part by the Krasnoyarsk Regional Foundation for Support of Scientific and Scientific-Technological Investigations and RFBR in the framework of project 'Siberia' (Grant No. 09-02-98001), and the Council on Grants from the President of the Russian Federation for Support of Leading Scientific Schools (project No. Nsh-1011.2008.2). . - ISSN 0953-8984

РУБ Physics, Condensed Matter
Рубрики:
CRYSTAL-STRUCTURE
   SOLID-STATE
   OXYFLUORIDE
   TRANSITION
   ANION
Кл.слова (ненормированные):
Antiferromagnets -- Ferromagnets -- Heat capacities -- High stress -- Intermediate phase -- Pippard relations -- Structural phase transition -- Transition temperature -- Uniaxial pressures -- Financial data processing -- Phase diagrams -- Phase transitions -- Thermal stress -- Tools -- Thermal expansion
Аннотация: The thermal expansion along the a, b and c axes of a (NH4)(2)NbOF5 crystal was measured from 120 to 300 K. Anomalies of alpha(T) associated with previously reported phase transitions Cmc2(1) -> C-2 -> I a were observed along all directions at T-1 = 259.3 K and T-2 = 220.5 K. The analysis of thermal expansion and heat capacity in the frame of the Pippard relations has permitted us to determine the uniaxial pressure derivatives of the transition temperatures dT/d sigma(i). The T-sigma(i) phase diagrams have shown a tendency for the intermediate phase to disappear at high stress along the b and c axes. Intensive and extensive barocaloric effects near the structural phase transitions were found to be comparable with the caloric parameters of some ferroelectrics, ferromagnets and antiferromagnets.

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Держатели документа:
[Gorev, Michail
Bogdanov, Evgeny
Flerov, Igor] Russian Acad Sci, Siberian Div, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
[Gorev, Michail
Flerov, Igor] Siberian Fed Univ, Inst Engn Phys, Krasnoyarsk 660041, Russia
[Laptash, Nataly] Russian Acad Sci, Far Eastern Div, Inst Chem, Vladivostok 690022, Russia
ИФ СО РАН
LVKirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, Akademgorodok 660036, Russian Federation
Institute of Engineering Physics, Siberian Federal University, av. Svobodny 79, Krasnoyarsk 660041, Russian Federation
Institute of Chemistry, Far Eastern Division, Russian Academy of Sciences, Vladivostok 690022, Russian Federation

Доп.точки доступа:
Gorev, M.; Bogdanov, E. V.; Богданов, Евгений Витальевич; Flerov, I. N.; Флёров, Игорь Николаевич; Laptash, N. M.
}
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18.

Berggren, K. F.
Crossover from regular to irregular behavior in current flow through open billiards / K. F. Berggren, A. F. Sadreev, A. A. Starikov // Phys. Rev. E. - 2002. - Vol. 66, Is. 1. - Ст. 16218, DOI 10.1103/PhysRevE.66.016218. - Cited References: 36 . - ISSN 1539-3755

РУБ Physics, Fluids & Plasmas + Physics, Mathematical
Рубрики:
PHASE SINGULARITIES
   NODAL POINTS
   WAVE-FIELDS
   QUANTUM
   STREAMLINES
   CONDUCTANCE
   VORTICES
   CHAOS
Кл.слова (ненормированные):
Eigenvalues and eigenfunctions -- Mathematical models -- Networks (circuits) -- Random processes -- Resonance -- Signal processing -- Spurious signal noise -- Bursting time series -- Coherence resonance -- Power spectrum -- Stochastic resonance -- Chaos theory
Аннотация: We discuss signatures of quantum chaos in terms of distributions of nodal points, saddle points, and streamlines for coherent electron transport through two-dimensional billiards, which are either nominally integrable or chaotic. As typical examples of the two cases we select rectangular and Sinai billiards. We have numerically evaluted distribution functions for nearest distances between nodal points and found that there is a generic form for open chaotic billiards through which a net current is passed. We have also evaluated the distribution functions for nodal points with specific vorticity (winding number) as well as for saddle points. The distributions may be used as signatures of quantum chaos in open systems. All distributions are well reproduced using random complex linear combinations of nearly monochromatic states in nominally closed billiards. In the case of rectangular billiards with simple sharp-cornered leads the distributions have characteristic features related to order among the nodal points. A flaring or rounding of the contact regions may, however, induce a crossover to nodal point distributions and current flow typical for quantum chaos. For an irregular arrangement of nodal points, as for example in the Sinai billiard, the quantum flow lines become very complex and volatile, recalling chaos among classical trajectories. Similarities with percolation are pointed out.

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Держатели документа:
Linkoping Univ, Dept Phys & Measurement Technol, S-58183 Linkoping, Sweden
LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
ИФ СО РАН
Dept. of Phys. and Msrmt. Technology, Linkoping University, S-581 83 Linkoping, Sweden
Kirensky Institute of Physics, 660036, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Sadreev, A. F.; Садреев, Алмаз Фаттахович; Starikov, A. A.
}
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19.

Morozov, E. V.
New insight into the wax precipitation process: in situ NMR imaging study in a cold finger cell / E. V. Morozov, O. V. Falaleev, O. N. Martyanov // Energy Fuels. - 2016. - Vol. 30, Is. 11. - P. 9003-9013, DOI 10.1021/acs.energyfuels.6b01535. - Cited References: 69. - This research was performed with the financial support of the Russian Science Foundation (Project No. 15-19-00119). . - ISSN 0887-0624
Кл.слова (ненормированные):
Cells -- Crude oil -- Cytology -- Deposits -- Diffusion -- Gelation -- Magnetic resonance imaging -- Ostwald ripening -- Phase separation -- Polymer blends -- Deposit formation -- Deposit structures -- Diffusion controlled growth -- Dominant mechanism -- Lower temperatures -- Morphology and dynamics -- Phase-separation process -- Temperature regimes -- Image processing
Аннотация: A cold finger cell intended for the wax deposition measurements was fabricated and integrated into an NMR imaging probe for the noninvasive study of wax precipitation processes in situ. The cell was first tested with a model system; then, a series of experiments with different thermal gradients applied to the cell were performed for a waxy crude oil. NMR imaging of the operating cell revealed the formation of a deposit with the morphology and dynamics strongly correlating with the temperature regime. At higher temperatures of cold finger, the incipient wax gel ages uniformly, giving rise to the hard and thin inner layer of deposit accompanied by a branched loosely consolidated outer layer. Conversely, the lower temperatures facilitate formation of a thick deposit which no longer ages uniformly and slow down the diffusion-controlled growth of the branched deposit structure. The results obtained are consistent with the majority of the data previously reported. Thus, gelation of the wax at temperatures below the cloud point and subsequent thermal-driven diffusion processes are considered to be the dominant mechanisms of the deposit formation. The counter diffusion and Ostwald ripening aging concepts were found to be relevant in the case of the cold finger study and account for the phenomena observed in this work. The information obtained via NMR imaging is highly complementary to the results obtained by other techniques that can aid in understanding the essential processes behind the wax precipitation phenomena. The approach developed can be effectively extended to study any thermal-driven phase separation process. © 2016 American Chemical Society.

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Держатели документа:
Kirensky Institute of Physics, Siberian Branch of the Russian Academy of Sciences, Akademgorodok 50/38, Krasnoyarsk, Russian Federation
Institute of Chemistry and Chemical Technology, Siberian Branch of the Russian Academy of Sciences, Akademgorodok 50/24, Krasnoyarsk, Russian Federation
Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, Pr. Ak. Lavrentieva 5, Novosibirsk, Russian Federation
Krasnoyarsk Scientific Centre, Siberian Branch of the Russian Academy of Sciences, Akademgorodok 50, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Falaleev, O. V.; Martyanov, O. N.; Морозов, Евгений Владимирович
}
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20.

Korshunov, M. A.
Boson peak in low-frequency Raman spectra of polymethylmethacrylate / M. A. Korshunov, V. F. Shabanov // Optoelectron. Instrum. Data Proces. - 2016. - Vol. 52, Is. 6. - P. 580-584, DOI 10.3103/S875669901606008X. - Cited References: 23 . - ISSN 8756-6990
Кл.слова (ненормированные):
boson peak -- Raman spectra -- anharmonicity -- modeling
Аннотация: The role of the local field, anharmonicity, and degree of disorder in the formation of the boson peak has been studied. The low-frequency Raman spectrum of a model polymethylmethacrylate crystal with disorder elements was calculated using the method of atom-atom potentials taking into account the effect of local fields on the spectrum. The calculations were carried out for a crystal containing rigid molecules of an isotactic polymethylmethacrylate oligomer and for a structure with flexible molecules. © 2016, Allerton Press, Inc.

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Публикация на русском языке Коршунов, Михаил Анатольевич. Бозонный пик в низкочастотных спектрах комбинационного рассеяния света полиметилметакрилата [Текст] / М. А. Коршунов, В. Ф. Шабанов // Автометрия. - 2016. - Т. 52 № 6. - С. 61-66

Держатели документа:
Kirenskii Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50/38, Krasnoyarsk, Russian Federation
Krasnoyarsk Scientific Center, Akademgorodok 50, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Shabanov, V. F.; Шабанов, Василий Филиппович; Коршунов, Михаил Анатольевич
}
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