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Absorption spectra of the purple nonsulfur bacteria light-harvesting complex: A DFT study of the B800 part / L. V. Begunovich, E. A. Kovaleva, M. M. Korshunov, V. F. Shabanov // J. Photochem. Photobiol. A: Chem. - 2024. - Vol. 450. - Ст. 115454, DOI 10.1016/j.jphotochem.2023.115454. - Cited References: 42. - This work was supported by the state assignment of the Ministry of Science and Higher Education of the Russian Federation. Authors would like to thank Information Technology Centre, Novosibirsk State University for providing access to their supercomputers. L.V.B. would like to thank Irkutsk Supercomputer Center of SB RAS for providing the access to HPC-cluster «Akademik V.M. Matrosov» (Irkutsk Supercomputer Center of SB RAS, Irkutsk: ISDCT SB RAS; http://hpc.icc.ru, accessed 20.10.2023) . - ISSN 1010-6030. - ISSN 1873-2666
Кл.слова (ненормированные):
Photosynthesis -- LH2 -- Light harvesting -- Rhodoblastus acidophilus -- Bacteriochlorophyll -- DFT -- DFTB -- Optical spectra
Аннотация: We’ve studied the B800 part of Rhodoblastus acidophilus light-harvesting complex (LH2) by several quantum chemical techniques based on the density functional theory (DFT) and determined the specific method and a minimal reliable model suitable for further studies of the LH2. In addition to bacteriochlorophyll a molecules, the minimal model includes two α and one β chain amino acids. Within the model, we are able to reproduce the contribution of the B800 ring of nine bacteriochlorophyll a molecules to the near infrared Qy absorption band. We also discuss the use of hybrid DFT calculations for precise energy and optical estimations and DFT-based tight binding (DFTB) method for the large-scale calculations. Crucial importance of Hartree-Fock exchange interaction for the correct description of B800 peak position was shown.

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Держатели документа:
Federal Research Center KSC SB RAS, Krasnoyarsk, Russia
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russia

Доп.точки доступа:
Begunovich, L. V.; Kovaleva, E. A.; Korshunov, M. M.; Коршунов, Максим Михайлович; Shabanov, V. F.; Шабанов, Василий Филиппович
}
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Biofunctionaized magnetic nanodiscs applied in medicine / A. Е. Sokolov, A. V. Lukyanenko, R. V. Moryachkov [et al.] // 1st International Conference APRICOT 2023 : book of abstracts. - 2023. - P. 47-48. - Cited References: 4. - Красноярский рег. фонд науки, № 2022060108781

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Держатели документа:
Kirensky Institute of Physics, FRC KSC SB RAS
Krasnoyarsk State Medical University
Federal Research Center KSC SB RAS
JSC «NPP «Radiosviaz»

Доп.точки доступа:
Sokolov, A. Е.; Соколов, Алексей Эдуардович; Lukyanenko, A. V.; Лукьяненко, Анна Витальевна; Moryachkov, R. V.; Морячков, Роман Владимирович; Zabluda, V. N.; Заблуда, Владимир Николаевич; Borus, A. A.; Борус, Андрей Андреевич; Zamay, T.; Замай, Татьяна; Luzan, N. A.; Galeev, R. G.; Masyugin, A. N.; Zelenov, F. V.; Zamay, S. S.; Замай С. С.; “Magnetic nanomaterials in biomedicine: synthesis and functionalization”, International conference(1 ; 2023 ; March 1-4 ; Yeravan, Armenia)
}
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Karavaisky, A. Yu.
Dielectric model of the upper organic layer of forest soils for a frequency of 435 MHz / A. Yu. Karavaisky, Y. I. Lukin // Izv. Atmos. Ocean. Phys. - 2023. - Vol. 59, Is. 9. - P. 1208-1219, DOI 10.1134/S0001433823090104. - Cited References: 57. - We are grateful to Cand. Sci. (Phys.–Math.) K.V. Muzalevskii, Head of the Laboratory of Remote Sensing Radiophysics, for supporting this work, as well as to I.V. Savin for selecting the studied soil samples. - The study was performed within the framework of the state assignment of the Ministry of Science and Higher Education of Russia, project no. 0287-2021-0034 . - ISSN 0001-4338. - ISSN 1555-628X
Кл.слова (ненормированные):
dielectric model -- moisture -- temperature -- organic soil -- frozen soil -- thawed soil
Аннотация: A dielectric model based on the refractive dielectric model of the mixture of thawed and frozen forest organic soils in the root zone for a frequency of 435 MHz has been developed. The model is created on the basis of dielectric measurements of four soils whose organic matter content varies in the range from 15 to 31%. The dielectric measurements are carried out in the range of the gravimetric moisture from 0 to 0.6 g/g and temperature range from –30 to 25°C. The coefficient of determination (R2) between values calculated by themodel and measured values of the real (ε') and imaginary (ε'') parts of complex dielectric permittivity is 0.97. The normalized root-mean-square error is 16 and 21% for the real and imaginary parts of the complex dielectric permittivity, respectively. This dielectric model may be applied in remote sensing algorithms when retrieving the value of forest soil moisture in the root zone from radar and radiometric data.

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Публикация на русском языке Каравайский, Андрей Юрьевич. Диэлектрическая модель верхнего органического слоя лесных почв для частоты 435 МГц [Текст] / А. Ю. Каравайский, Ю. И. Лукин. - 16 с. // Исслед. Земли из космоса. - 2023. - № 3. - С. 81-96

Держатели документа:
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036 Russia

Доп.точки доступа:
Lukin, Y. I.; Лукин, Юрий Иванович; Каравайский, Андрей Юрьевич
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Effect of cobalt concentration on the magnetic properties of the Co1–xMgxFe2O4 nanocrystals / O. S. Ivanova, I. S. Edelman, S. G. Ovchinnikov [et al.] // JETP Lett. - 2024. - Vol. 119, Is. 2. - P. 104-110, DOI 10.1134/S0021364023603457. - Cited References: 26. - The research was carried out at the expense of the Russian Science Foundation Grant # 23-22-10025, https://rscf.ru/project/23-22-10025/, Krasnoyarsk Regional Science Foundation . - ISSN 0021-3640. - ISSN 1090-6487
Аннотация: Nanoparticles of Co1–xMgxFe2O4 with x equal to 0, 0.2, 0.4, 0.6, 0.8 and 1.0 have been synthesized. For all values of x, they are nanocrystals with a cobalt ferrite structure and an average linear size (56 ± 3) nm. Based on the analysis of the Mossbauer effect spectra, the Co2+ ions were shown to occupy only octahedral positions at all values of x. The experimentally obtained dependence of the nanoparticles magnetization on x corresponds to the dependence calculated using the Mossbauer effect data, except for the sample with x = 1.0. The effective magnetic anisotropy constant estimated for 0 K from the analysis of the coercive force temperature dependences decreases from 5.27 × 106 at x = 0 to 1.29 × 106 erg/cm3 at x = 0.8 and drops sharply to 4 × 104 erg/cm3 at x = 1.0

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Публикация на русском языке Влияние концентрации кобальта на магнитные свойства нанокристаллов семейства Co1–xMgxFe2O4 [Текст] / О. С. Иванова, И. С. Эдельман, С. Г. Овчинников [и др.]. - 7 с. // Письма в ЖЭТФ. - 2024. - Т. 119 Вып. 2. - С. 111-117

Держатели документа:
Kirensky Institute of Physics, Federal Research Center “Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences”, 660036, Krasnoyarsk, Russia
Siberian Federal University, 660041, Krasnoyarsk, Russia
Amity University Haryana, 122413, Gurugram, Haryana, India

Доп.точки доступа:
Ivanova, O. S.; Иванова, Оксана Станиславовна; Edelman, I. S.; Эдельман, Ирина Самсоновна; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Thakur, A.; Thakur, P.; Sukhachev, A. L.; Сухачев, Александр Леонидович; Knyazev, Yu. V.; Князев, Юрий Владимирович; Ivantsov, R. D.; Иванцов, Руслан Дмитриевич; Molokeev, M. S.; Молокеев, Максим Сергеевич
}
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Effect of local coulomb interaction on majorana corner modes / S. V. Aksenov, A. D. Fedoseev, M. S. Shustin, A. O. Zlotnikov // 8th International conference on supercondactivity and magnetism (ICSM2023) : abstract book. - 2023. - P. 454. - Cited References: 4. - РНФ № 22-22-20076

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Держатели документа:
Kirensky Institute of Physics, FRC KSC SB RAS

Доп.точки доступа:
Aksenov, S. V.; Аксенов, Сергей Владимирович; Fedoseev, A. D.; Федосеев, Александр Дмитриевич; Shustin, M. S.; Шустин, Максим Сергеевич; Zlotnikov, A. O.; Злотников, Антон Олегович; International Conference on Supercondactivity and Magnetism(8 ; 2023 ; May 4-11 ; Ölüdeniz-Fethiye, Turkey)
}
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    Effects of endohedral Gd-containing fullerenols with a different number of oxygen substituents on bacterial bioluminescence / E. A. Stepin, E. S. Sushko, N. G. Vnukova [et al.] // Int. J. Mol. Sci. - 2024. - Vol. 25, Is. 2. - Ст. 708, DOI 10.3390/ijms25020708. - Cited References: 102. - This research was funded by the State Assignment of the Ministry of Science and Higher Education of the Russian Federation, project No. 0287-2021-0020, and partly supported by the Russian Science Foundation No. 23-26-10018, Krasnoyarsk Regional Science Foundation . - ISSN 1661-6596. - ISSN 1422-0067
   Перевод заглавия: Влияние эндоэдральных Gd-содержащих фуллеренолов с различным числом кислородных заместителей на биолюминесценцию бактерий
Кл.слова (ненормированные):
endohedral fullerenol -- gadolinium -- bioluminescence -- bacterial bioassay -- toxicity -- enzymatic bioassay -- reactive oxygen species -- density functional tight binding method -- fourier-transform infrared spectroscopy
Аннотация: Gadolinium (Gd)-containing fullerenols are perspective agents for magnetic resonance imaging and cancer research. They combine the unique paramagnetic properties of Gd with solubility in water, low toxicity and antiradical activity of fullerenols. We compared the bioeffects of two Gd-containing fullerenols with a different number of oxygen groups—20 and 42: Gd@C82O20H14 and Gd@C82O42H32. The bioluminescent bacteria-based assay was applied to monitor the toxicity of fullerenols, bioluminescence was applied as a signal physiological parameter, and bacterial enzyme-based assay was used to evaluate the fullerenol effects on enzymatic intracellular processes. Chemiluminescence luminol assay was applied to monitor the content of reactive oxygen species (ROS) in bacterial and enzymatic media. It was shown that Gd@C82O42H32 and Gd@C82O20H14 inhibited bacterial bioluminescence at >10?1 and >10?2 gL?1, respectively, revealing a lower toxicity of Gd@C82O42H32. Low-concentration (10?3–10?1 gL?1) bacterial bioluminescence activation by Gd@C82O42H32 was observed, while this activation was not found under exposure to Gd@C82O20H14. Additional carboxyl groups in the structure of Gd@C82O42H32 were determined by infrared spectroscopy and confirmed by quantum chemical calculations. The groups were supposed to endow Gd@C82O42H32 with higher penetration ability through the cellular membrane, activation ability, lower toxicity, balancing of the ROS content in the bacterial suspensions, and lower aggregation in aqueous media.

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Держатели документа:
Biophysics Department, School of Fundamental Biology and Biotechnology, Siberian Federal University, 660041 Krasnoyarsk, Russia
Institute of Biophysics SB RAS, FRC KSC SB RAS, 660036 Krasnoyarsk, Russia
Institute of Physics SB RAS, FRC KSC SB RAS, 660036 Krasnoyarsk, Russia
Department of Solid State Physics and Nanotechnology, School of Engineering Physics and Radioelectronics, Siberian Federal University, 660074 Krasnoyarsk, Russia
Department of Physical and Inorganic Chemistry, School of Non-Ferrous Metals and Materials Science, Siberian Federal University, 660025 Krasnoyarsk, Russia
Laboratory for Digital Controlled Drugs and Theranostics, FRC KSC SB RAS, 660036 Krasnoyarsk, Russia

Доп.точки доступа:
Stepin, E. A.; Sushko, E. S.; Сушко, Екатерина Сергеевна; Vnukova, N. G.; Внукова, Наталья Григорьевна; Churilov, G. N.; Чурилов, Григорий Николаевич; Rogova, A. V.; Tomilin, F. N.; Томилин, Феликс Николаевич; Kudryasheva, N. S.
}
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Ferromagnetic silicides and germanides epitaxial films and multilayered hybrid structures: Synthesis, magnetic and transport properties / A. S. Tarasov, A. V. Lukyanenko, I. A. Yakovlev [et al.] // Bull. Russ. Acad. Sci.: Phys. - 2023. - Vol. 87, Suppl. 1. - P. S133-S146, DOI 10.1134/S1062873823704518. - Cited References: 54. - The authors thank the laboratory of Magnetic MAX Materials created under Megagrant project (agreement no. 075-15-2019-1886) for providing experimental equipment and the Collective Use Center at the Krasnoyarsk Scientific Center (Siberian Branch, Russian Academy of Sciences) for assistance. The authors also thank Professor B.A. Belyaev for FMR calculations. - Supported by the Russian Science Foundation, grant no. 23-22-10033, https://rscf.ru/project/23-22-10033/, Krasnoyarsk Regional Fund of Science . - ISSN 1062-8738. - ISSN 1934-9432
Кл.слова (ненормированные):
iron silicide -- manganese germanide -- MBE -- FMR -- electronic transport -- spintronics
Аннотация: Planar and vertical hybrid structures, which combine ferromagnetic and semiconductor layers are essential for implementation and study of spin transport phenomena in semiconductors, which is crucial for the advancement and development of spintronics. We have developed approaches for the synthesis of Fe3 + xSi1 – x epitaxial thin films and demonstrated the spin accumulation effect in multiterminal devices based on Fe3 + xSi1 – x/Si. Fe3 + xSi1 – x/Ge/Fe3Si and Fe3 + xSi1 – x/Ge/Mn5Ge3 multilayer hybrid structures were synthesized on a Si(111) substrate, study of their structural, magnetic and transport properties were performed. The effect of synthesis conditions on the growth of epitaxial structures and on their magnetic and transport properties was discussed. The results obtained may prove valuable in the development and fabrication of spintronic devices.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center “Krasnoyarsk Scientific Center”, Siberian Branch, Russian Academy of Sciences, 660036, Krasnoyarsk, Russia
Institute of Engineering Physics and Radio Electronics, Siberian Federal University, 660041, Krasnoyarsk, Russia
Federal Research Center “Krasnoyarsk Scientific Center”, Siberian Branch, Russian Academy of Sciences, 660036, Krasnoyarsk, Russia

Доп.точки доступа:
Tarasov, A. S.; Тарасов, Антон Сергеевич; Lukyanenko, A. V.; Лукьяненко, Анна Витальевна; Yakovlev, I. A.; Яковлев, Иван Александрович; Tarasov, I. A.; Тарасов, Иван Анатольевич; Bondarev, I. A.; Бондарев, Илья Александрович; Sukhachev, A. L.; Сухачев, Александр Леонидович; Shanidze, L. V.; Шанидзе, Лев Викторович; Smolyakov, D. A.; Смоляков, Дмитрий Александрович; Varnakov, S. N.; Варнаков, Сергей Николаевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Volkov, N. V.; Волков, Никита Валентинович
}
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    Titova, V. R.
    Growing single crystalsof NdSc3(BO3)4 rare-earth oxyborates from melt-solution with huntite structure / В. Р. Титова // Магнитные материалы. Новые технологии : тез. докл. IX Байкал. междунар. конф. BICMM-2023 / чл. прогр. ком.: S. S. Aplesnin [et al.] ; чл. орг. ком. R. S. Iskhakov [et al.]. - Иркутск, 2023. - P. 204, DOI 10.26516/978-5-9624-2178-0.2023.1-207. - Библиогр.: 2. - РНФ № 22-12-20019 ; Красноярский региональный фонд науки . - ISBN 978-5-962402178-0
   Перевод заглавия: Выращивание монокристаллов NdSc3(BO3)4 редкоземельных оксиборатов из раствора-расплава со структурой хантита

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

Доп.точки доступа:
Аплеснин, Сергей Степанович \чл. прогр. ком.\; Aplesnin, S. S.; Балаев, Дмитрий Александрович \чл. прогр. ком.\; Balaev, D. A.; Овчинников, Сергей Геннадьевич \чл. прогр. ком.\; Ovchinnikov, S. G.; Исхаков, Рауф Садыкович \чл. орг. ком.\; Iskhakov, R. S.; Байкальская международная конференция "Магнитные материалы. Новые технологии"(9 ; 2023 ; сент. ; 11-14 ; Байкальск); "Магнитные материалы. Новые технологии", Байкальская международная конференция(9 ; 2023 ; сент. ; 11-14 ; Байкальск); "Magnetic materials. New tecnologies", Baikal International Conference(9 ; 2023 ; Sept. ; 11-14 ; Baikalsk); Иркутский государственный университет
}
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    Titova, V. R.
    Influence of melt-solution composition on the properties of NdSc3(BO3)4 single crystals / V. R. Titova, I. A. Gudim // XV Cимпозиум с международным участием "Термодинамика и материаловедение" : тез. докладов. - Новосибирск, 2023. - P. 238, DOI 10.26902/THERM_2023_228. - Библиогр.: 1. - РНФ № 22-12-20019 ; Красноярский региональный фонд науки . - ISBN 978-5-901688-27-4
   Перевод заглавия: Влияние состава раствора-расплава на свойства монокристаллов NdSc3(BO3)4

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Держатели документа:
Институт физики им. Л.В. Киренского СО РАН
Институт неорганической химии им. А. В. Николаева СО РАН

Доп.точки доступа:
Gudim, I. A.; Гудим, Ирина Анатольевна; "Термодинамика и материаловедение", симпозиум с международным участием(15 ; 2023 ; 3-7 июля ; Новосибирск); Российское химическое общество им. Д.И. МенделееваНаучный совет РАН по физической химии; Институт неорганической химии им. А.В. Николаева Сибирского отделения РАН; Институт химии твердого тела УрО РАН; Институт химии силикатов им. И. В. Гребенщикова РАН
}
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10.

Influence of the DyxCo1-x–Bi interface on the magnetic properties of DyxCo1-x/Bi/Py three-layer structures / N. N. Kosyrev, G. S. Patrin, Ya. G. Shiyan [et al.] // J. Supercond. Nov. Magn. - 2024. - Vol. 37, Is. 2. - P. 419-424, DOI 10.1007/s10948-024-06690-0. - Cited References: 15. - The authors are grateful to R.Yu. Rudenko for carrying out measurements using an atomic force microscope. - The research was conducted according to the state assignment of the Ministry of Science and Higher Education of the Russian Federation and the Federal State Autonomous Educational Institution of Higher Education Siberian Federal University (No. FSRZ-2023–0008) . - ISSN 1557-1939. - ISSN 1557-1947
Кл.слова (ненормированные):
Multilayer magnetic films -- Exchange interaction -- Exchange bias -- Ellipsometry -- SQUID magnetometry
Аннотация: The interlayer interactions in multilayer systems with a non-magnetic semimetallic interlayer are great of interest. The magnetic and structural properties of the DyxCo1-x/Bi/Py systems (17 ˂ x ˂ 26 at.%) have been studied. The temperature dependences of magnetization in the range 4.2–300 K were measured for the first time. The influence of the bismuth interlayer thickness on the exchange interaction between the DyCo and Py layers was found as well as the critical value of its thickness. The obtained atypical value of the period of exchange bias oscillations was explained by the formation of bismuth compounds with dysprosium–pnictogenides at bismuth thicknesses below the critical value. The interface was investigated by spectral ellipsometry in the range 2–5 eV. The information on the structure of the surface obtained by atomic force microscopy was used to create a multilayer model for fitting experimental ellipsometric data. Analysis of the optical properties showed that pnictogenide Dy3Bi2 is formed at the interface, which affects the general magnetic state of the samples studied.

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Держатели документа:
Institute of Engineering Physics and Radio Electronics, Siberian Federal University, 79 Svobodny Pr., 660041, Krasnoyarsk, Russia
Kirensky Institute of Physics, Federal Research Center KSC Siberian Branch Russian Academy of Sciences, Akademgorodok 50, Building 38, 660036, Krasnoyarsk, Russia
Achinsk Branch of Krasnoyarsk State Agrarian University, Achinsk, Russia

Доп.точки доступа:
Kosyrev, N. N.; Косырев, Николай Николаевич; Patrin, G. S.; Патрин, Геннадий Семёнович; Shiyan, Ya. G.; Шиян, Ярослав Германович; Volchenko, E. N.; Волченко Е. Н.; Yakovchuk, V. Yu.; Яковчук, Виктор Юрьевич; Komarov, V. A.; Комаров, Василий Андреевич; Semenov, S. V.; Семёнов, Сергей Васильевич
}
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