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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gluck M., Kolovsky A. R., Korsch H. J.
Заглавие : A quantum cable car for Wannier-Stark ladders
Место публикации : Phys. Lett. A. - 2000. - Vol. 276, Is. 1-4. - P.167-174. - ISSN 0375-9601, DOI 10.1016/S0375-9601(00)00656-3
Примечания : Cited References: 13
Предметные рубрики: DYNAMIC LOCALIZATION
BLOCH PARTICLE
AC FIELDS
DC
STATES
STATISTICS
LIFETIME
Ключевые слова (''Своб.индексиров.''): wannier-stark ladder--induced transitions--induced transitions--wannier-stark ladder--article--energy--oscillation--quantum mechanics--time--transport kinetics
Аннотация: This Letter studies the dynamics of transitions between the levels of a Wannier-Stark ladder induced by a resonant periodic driving. The analysis of the problem is done in terms of resonance quasienergy states, which take into account the metastable character of the Wannier-Stark states. It is shown that the periodic driving creates from a localized Wannier-Stark state an extended Bloch-like state with a spatial length varying in time as similar to t(1/2). Such a state can find applications in the field of atomic optics because it generates a coherent pulsed atomic beam. (C) 2000 Elsevier Science B.V. All rights reserved.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Volova, Tatiana G., Demidenko, Aleksey V., Murueva, Anastasiya V., Dudaev, Alexey E., Nemtsev I. V., Shishatskaya, Ekaterina I.
Заглавие : Biodegradable polyhydroxyalkanoates formed by 3- and 4-hydroxybutyrate monomers to produce nanomembranes suitable for drug delivery and cell culture
Колич.характеристики :23 с
Место публикации : Technologies. - 2023. - Vol. 11, Is. 4. - Ст.106. - ISSN 22277080 (eISSN), DOI 10.3390/technologies11040106
Примечания : Cited References: 116. - his research was funded by State Assignment of the Ministry of Science and Higher Education of the Russian Federation (project No. 0287-2021-0025)
Аннотация: Biodegradable polyhydroxyalkanoates, biopolymers of microbiological origin, formed by 3- and 4-hydroxybutyrate monomers P(3HB-co-4HB), were used to obtain nanomembranes loaded with drugs as cell carriers by electrospinning. Resorbable non-woven membranes from P(3HB-co-4HB) loaded with ceftazidime, doripinem, and actovegin have been obtained. The loading of membranes with drugs differently affected the size of fibers and the structure of membranes, and in all cases increased the hydrophilicity of the surface. The release of drugs in vitro was gradual, which corresponded to the Higuchi and Korsmeyer-Peppas models. Antibiotic-loaded membranes showed antibacterial activity against S. aureus and E. coli, in which growth inhibition zones were 41.7 ± 1.1 and 38.6 ± 1.7 mm for ceftazidime and doripinem, respectively. The study of the biological activity of membranes in the NIH 3T3 mouse fibroblast culture based on the results of DAPI and FITC staining of cells, as well as the MTT test, did not reveal a negative effect despite the presence of antibiotics in them. Samples containing actovegin exhibit a stimulating effect on fibroblasts. Biodegradable polyhydroxyalkanoates formed by 3-hydroxybutyrate and 4-hydroxybutyrate monomers provide electrospinning non-woven membranes suitable for long-term delivery of drugs and cultivation of eukaryotic cells, and are promising for the treatment of wound defects complicated by infection.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Barinov G. I., Babkin Y. V.
Заглавие : Influence of high-pressure thermal-treatment on the phase compound and phase-transformation kinetics of a system magnetite-wustite
Место публикации : Izvestiya vysshikh uchebnykh zavedenii Fizika. - 1990. - Vol. 33, Is. 5. - P.95-96. - ISSN 0021-3411; \b Russian Physics Journal; \b Известия высших учебных заведений. Физика
Примечания : Cited References: 4
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Chzhan A. V., Podorozhnyak S. A., Rudenko R. Yu.
Заглавие : Influence of solid acidity on growth kinetics, structure and magnetic properties of CoP films during chemical deposition
Коллективы : Российская академия наук, Уральское отделение РАН, Институт физики металлов им. М. Н. Михеева Уральского отделения РАН, Уральский федеральный университет им. первого Президента России Б.Н. Ельцина, Российский фонд фундаментальных исследований, Euro-Asian Symposium "Trends in MAGnetism", "Trends in MAGnetism", Euro-Asian Symposium
Место публикации : Euro-asian symposium "Trends in magnetism" (EASTMAG-2019): Book of abstracts/ чл. конс. ком.: S. G. Ovchinnikov, N. V. Volkov [et al.] ; чл. прогр. ком. D. M. Dzebisashvili [et al.]. - 2019. - Vol. 2. - Ст.J.P38. - P.254-255. - ISBN 978-5-9500855-7-4 (Шифр В33/E12-125657784)
Примечания : Cited References: 3
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Chzhan A. V., Podorozhnyak S. A., Patrin G. S., Rudenko R. Yu., Onufrienok V. V.
Заглавие : Influence of solution acidity on growth kinetics, structure and magnetic properties of Co-P films, obtained by chemical deposition
Коллективы : Euro-Asian Symposium "Trends in MAGnetism"
Место публикации : J. Phys. Conf. Ser. - 2019. - Vol. 1389, Is. 1. - Ст.012116. - ISSN 1742-6588, DOI 10.1088/1742-6596/1389/1/012116. - ISSN 1742-6596 (eISSN)
Примечания : Cited References: 21
Аннотация: The results of studies of the effect of solution acidity on the growth kinetics, structure and magnetic properties of Co-P films obtained by chemical deposition are presented. It was shown that the growth of Co-P films in the low pH region occurs mainly due to the growth of crystallite sizes, and in the high pH region, due to an increase in the nucleation rate. From the analysis of the chemical equilibrium of redox reactions, taking into account the balance of citrate and hydroxyl complexes of Co, a qualitative explanation of the features of the change in the rate and nature of the deposition of Co atoms from pH is proposed.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Lamonova K.V., Zhitlukhina E.S., Babkin R.Y., Orel S.M., Pashkevich Y.G., Ovchinnikov S. G.
Заглавие : Intermediate-spin state of a 3D ion in the octahedral environment and generalization of the Tanabe - Sugano diagrams
Место публикации : The Journal of Physical Chemistry A (Dynamics, Kinetics, Environmental Chemistry, Spectroscopy, Structure, Theory): American Chemical Society, 2011. - Т. 115, № 46. - С. 13596-13604. - ISSN 1089-5639, DOI 10.1021/jp2071265. - ISSN 1520-5215(eissn)
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zharkov S. M., Altunin R. R., Yumashev V. V., Moiseenko E. T., Belousov O. V., Solovyov L. A., Volochaev M. N., Zeer G. M.
Заглавие : Kinetic study of a solid-state reaction in Ag/Al multilayer thin films by in situ electron diffraction and simultaneous thermal analysis
Коллективы : Russian Science Foundation, RussiaRussian Science Foundation (RSF) [181300 080]
Место публикации : J. Alloys Compd. - 2021. - Vol. 871. - Ст.159474. - ISSN 0925-8388, DOI 10.1016/j.jallcom.2021.159474. - ISSN 1873-4669(eISSN)
Примечания : Cited References: 47. - This work was supported by the Russian Science Foundation, Russia under grant #181300 080
Предметные рубрики: STRUCTURAL PHASE-TRANSFORMATIONS
COMMITTEE RECOMMENDATIONS
ICTAC KINETICS
Аннотация: A solid-state reaction process in Ag/Al multilayer thin films has been investigated by the methods of in situ electron diffraction, simultaneous thermal analysis, transmission electron microscopy and X-ray diffraction with the aim of studying the phase formation kinetics of intermetallic compounds. The sequence of the phase transformations in the solid-state reaction has been established: Ag+Al→(Ag)+(Al)→(Ag)+δ-Ag2Al→μ-Ag3Al. The process of the solid-state interaction has been shown to consist of two steps; each of them is described by a kinetic model of the nth order reactions with autocatalysis. The kinetic parameters of the autocatalytic process of the phase formation for δ-Ag2Al and µ-Ag3Al, have been determined, in particular, their apparent activation energy: 126 kJ/mol and 106 kJ/mol, respectively.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Azarapin N. O., Khritokhin N. A., Atuchin V. V., Gubin A. A., Molokeev M. S., Mukherjee S., Andreev O. V.
Заглавие : Kinetics and mechanism of BaLaCuS3 oxidation
Место публикации : Crystals. - 2023. - Vol. 13, Is. 6. - Ст.903. - ISSN 20734352 (eISSN), DOI 10.3390/cryst13060903
Примечания : Cited References: 65. - The work was partially carried out using the resources of the Research Resource Center “Natural Resources Management and Physico-Chemical Research” (Tyumen University) with financial support from the Ministry of Science and Higher Education of the Russian Federation (contract No. 05.594.21.0019., Unique identification number RFMEFI59420X0019). M.S. Molokeev was supported by the Tyumen Oblast Government, as part of the West-Siberian Interregional Science and Education Center’s project No. 89-DON (3)The authors would like to thank the staff of the Engineering Center of the Tyumen State University (special Alexej V. Matigorov) for their help in carrying out physical and chemical tests
Аннотация: The oxidation reactions of BaLaCuS3 in the artificial air atmosphere were studied at different heating rates in the temperature range of 50–1200 °C. The oxidation stages were determined by DSC-TG, XRD and IR–vis methods. The kinetic characteristics of the proceeding reactions were obtained with the use of the Kissinger model in a linearized form. Compound BaLaCuS3 was stable in the air up to 280 °C. Upon further heating up to 1200 °C, this complex sulfide underwent three main oxidation stages. The first stage is the formation of BaSO4 and CuLaS2. The second stage is the oxidation of CuLaS2 to La2O2SO4 and copper oxides. The third stage is the destruction of La2O2SO4. The final result of the high-temperature treatment in the artificial air atmosphere was a mixture of barium sulfate, copper (II) oxide and La2CuO4. The mechanism and stages of BaLaCuS3 oxidation and further interactions of the components were discussed.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : BABKIN E. V., CHARYEV A. A., DROBOTENKO V. V., VYSHINSKAYA L. I.
Заглавие : KINETICS OF METAL-INSULATOR PHASE-TRANSITION IN VO2-N FILMS
Место публикации : Solid State Commun.: PERGAMON-ELSEVIER SCIENCE LTD, 1988. - Vol. 65, Is. 4. - P241-243. - ISSN 0038-1098, DOI 10.1016/0038-1098(88)90778-8
Примечания : Cited References: 6
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Slyusareva E. A., Sizykh A. G., Gerasimova M. A., Slabko V. V., Myslivets S. A.
Заглавие : Laser photolysis of fluorone dyes in a chitosan matrix
Место публикации : Quantum Electron.: Turpion LTD, 2012. - Vol. 42, Is. 8. - P.687-692. - ISSN 1063-7818, DOI 10.1070/QE2012v042n08ABEH014860
Примечания : Cited References: 32
Предметные рубрики: POLY(VINYL ALCOHOL) MATRIX
XANTHENE DYES
ROSE-BENGAL
FLUORESCENCE PROPERTIES
DELAYED FLUORESCENCE
ORGANIC-MOLECULES
TRIPLET-STATE
EXCITATION
ABSORPTION
PHOSPHORESCENCE
Ключевые слова (''Своб.индексиров.''): laser photolysis--fluorescein--dibromofluorescein--eosin y--erythrosin b--rose bengal--chitosan--photobleaching kinetics--two-step absorption
Аннотация: Kinetics of laser-induced photobleaching of fluorone dyes (fluorescein, dibromofluorescein, eosin Y, erythrosin B, Rose Bengal) is studied in a chitosan matrix. For all dyes the bleaching kinetics at the intensities of laser radiation 0.7 — 11.9 W cm-2 demonstrates quasi-monomolecular behaviour. The results are analysed using a kinetic model, based on the four-level (S0, S1, T1, Tn) scheme of the dye with chemically active triplet states taken into account. It is shown that the rate constants of the chemical reaction involving higher triplet states in the dyes studied amount to (3.9 — 18.6) × 106 s-1 and exceed the analogous values for the reaction involving the first lower triplet states by nine orders of magnitude. The rate of reaction involving the first triplet states appeared to be higher by one — two orders of magnitude than that in the case of higher triplet states involved because of low population of the latter. The possible mechanism of dye bleaching with participation of chitosan that consists in reduction of the dye to the leuco form by transfer of hydrogen from the chitosan matrix is discussed.
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