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1.
A study of
the properties and efficacy of microparticles based on P(3HB) and P(3HB/3HV) loaded with herbicides / R. Vijayamma, H. J. Maria, S. Thomas [et al.]> // J. Appl. Polym. Sci. - 2022. -
Vol. 139
,
Is. 10
. - Ст. 51756,
DOI
10.1002/app.51756. - Cited References: 58. - This work was supported by Project “Agropreparations of the new generation: a strategy of construction and realization” (Agreement No 074-02-2018-328) in accordance with Resolution No 220 of the Government of the Russian Federation of April 9, 2010, “On measures designed to attract leading scientists to the Russian institutions of higher learning”. Instruments of Krasnoyarsk Regional Center of Research Equipment of Federal Research Center «Krasnoyarsk Science Center SB RAS» were used . - ISSN 0021-8995
Кл.слова (ненормированные):
biodegradable
--
drug delivery systems
--
microparticles
Аннотация:
The wide use of pesticides in agriculture has caused uncontrolled distribution of these chemicals in the environment, calling for the development and investigation of new environmentally friendly formulations, which would reduce human impact on nature. In the present study, the metribuzin (MET), tribenuron-methyl (TBM), and fenoxaprop-P-ethyl (FPE) herbicides were encapsulated in microparticles of degradable microbial polymers – polyhydroxyalkanoates (PHAs) – of two types – poly-3-hydroxybutyrate [P(3HB)] and poly(3-hydroxybutyrate-co-3-hydroxyvalerate [P(3HB/3HV)]. The use of P(3HB) resulted in higher yields of microparticles (63% to 79%) and larger sizes of the particles, whose average diameter was 0.60 ± 0.06–0.75 ± 0.11 μm, while the average diameter of copolymer particles varied between 0.43 ± 0.12 and 0.55 ± 0.05 μm. Encapsulation efficiency was rather determined by the type of herbicide and its solubility, varying from 24.7% to 48.2%. In vitro herbicide release from microparticles to water was affected by herbicide solubility and PHA chemical composition. The readily soluble MET showed the highest release rate, and over 30 days, 64% and 78% of the encapsulated amounts were released from P(3HB) and P(3HB/3HV) microparticles, respectively. High herbicidal activity of microparticles loaded with metribuzin and tribenuron-methyl was demonstrated in the laboratory stands of the Elsholtzia ciliata weed plant.
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Держатели документа:
Institute of Fundamental Biology and Biotechnology, Siberian Federal University, Krasnoyarsk, Russian Federation
International and Inter University Centre for Nanoscience and Nanotechnology, Mahatma Gandhi University, Kottayam, India
Institute of Biophysics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, Krasnoyarsk, Russian Federation
Krasnoyarsk Regional Center of Research Equipment of Federal Research Center “Krasnoyarsk Science Center SB RAS”, Krasnoyarsk, Russian Federation
L.V. Kirensky Institute of Physics, Federal Research Center “Krasnoyarsk Science Center SB RAS”, Krasnoyarsk, Russian Federation
Scientific Laboratory, Reshetnev Siberian State University of Science and Technology, Krasnoyarsk, Russian Federation
Доп.точки доступа:
Vijayamma, R.; Maria, H. J.; Thomas, S.; Shishatskaya, E. I.; Kiselev, E. G.; Nemtsev, I. V.;
Немцев
,
Иван
Васильевич
; Sukhanova, A. A.; Volova, T. G.
}
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2.
Nemtsev, I. V.
Ab initio study of the magnetic, optical and electronic properties of spinel Co3O4 within DFT and GW approaches / I. V. Nemtsev, V. S. Zhandun> //
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. H.P17. - P. 99-101. - Cited References: 3. - This work was supported by the “BASIS” Foundation for Development of Theoretical Physics and Mathematics, and the Krasnoyarsk Regional Fund of Science and Technology Support according to the participation in the VII Euro-Asian Symposium “Trends in Magnetism”: EASTMAG-2019 . - ISBN 978-5-9500855-7-4
Перевод заглавия:
Влияние температуры на вызванный примесями переход s+- - s++ в многозонной модели сверхпроводников на основе железа
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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russia
Доп.точки доступа:
Ovchinnikov, S. G. \чл. конс. ком.\; Овчинников, Сергей Геннадьевич; Volkov, N. V. \чл. конс. ком.\; Волков, Никита Валентинович; Dzebisashvili, D. M. \чл. прогр. ком.\; Дзебисашвили, Дмитрий Михайлович; Zhandun, V. S.; Жандун, Вячеслав Сергеевич;
Немцев
,
Иван
Васильевич
; 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"(7 ; 2019 ; Sept. ; 8-13 ; Ekaterinburg); "Trends in MAGnetism", Euro-Asian Symposium(7 ; 2019 ; Sept. ; 8-13 ; Ekaterinburg)
Нет сведений об экземплярах (Источник в БД не найден)
}
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3.
Nemtsev, I. V.
Ab initio study of interrelation between structural, magnetic and optical properties of MnGa2O4 and MnCo2O4 spinels / I. V. Nemtsev, V. S. Zhandun> //
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. K.P27. - P. 364-365. - Cited References: 1. - The reported study was funded by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science to the research project No. 18-42-243019: ”Firstprinciples studies of the polarization, magnetic, electronic, and magnetoelectric properties of functional compounds with a spinel structure containing 3d and 4f ions”. This work has been carried out using computing resources of the federal collective usage center Complex for Simulation and Data Processing for Mega-science Facilities at NRC “Kurchatov Institute”, http://ckp.nrcki.ru/ . - ISBN 978-5-9500855-7-4
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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russia
Доп.точки доступа:
Ovchinnikov, S. G. \чл. конс. ком.\; Овчинников, Сергей Геннадьевич; Volkov, N. V. \чл. конс. ком.\; Волков, Никита Валентинович; Dzebisashvili, D. M. \чл. прогр. ком.\; Дзебисашвили, Дмитрий Михайлович; Zhandun, V. S.; Жандун, Вячеслав Сергеевич;
Немцев
,
Иван
Васильевич
; 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"(7 ; 2019 ; Sept. ; 8-13 ; Ekaterinburg); "Trends in MAGnetism", Euro-Asian Symposium(7 ; 2019 ; Sept. ; 8-13 ; Ekaterinburg)
Нет сведений об экземплярах (Источник в БД не найден)
}
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4.
Nemtsev, I. V.
Ab initio study of the magnetic, optical and electronic properties of spinel Co3O4 within dft and GW approaches / I. V. Nemtsev, V. S. Zhandun> //
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. H.P17. - P. 99-100. - Cited References: 5. - The reported study was funded by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science to the research project no. 18-42-243019: “Firstprinciples studies of the polarization, magnetic, electronic, and magnetoelectric properties of functional compounds with a spinel structure containing 3d and 4f ions”. This work has been carried out using computing resources of the federal collective usage center Complex for Simulation and Data Processing for Mega-science Facilities at NRC “Kurchatov Institute”, http://ckp.nrcki.ru/ . - ISBN 978-5-9500855-7-4
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Читать в сети ИФ
Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russia
Доп.точки доступа:
Ovchinnikov, S. G. \чл. конс. ком.\; Овчинников, Сергей Геннадьевич; Volkov, N. V. \чл. конс. ком.\; Волков, Никита Валентинович; Dzebisashvili, D. M. \чл. прогр. ком.\; Дзебисашвили, Дмитрий Михайлович; Zhandun, V. S.; Жандун, Вячеслав Сергеевич;
Немцев
,
Иван
Васильевич
; 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"(7 ; 2019 ; Sept. ; 8-13 ; Ekaterinburg); "Trends in MAGnetism", Euro-Asian Symposium(7 ; 2019 ; Sept. ; 8-13 ; Ekaterinburg)
Нет сведений об экземплярах (Источник в БД не найден)
}
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5.
Angle-resolved reflection spectroscopy
of high-quality PMMA opal crystal / I. V. Nemtsev [et al.]> // Photonics Nanostruc. Fundam. Appl. - 2018. -
Vol. 28
. - P. 37-44,
DOI
10.1016/j.photonics.2017.11.007. - Cited References: 72. - This study was supported by the Russian Foundation for Basic Research (Grant No. 16-32-00302 мол_а ), by the Council for Grants of the President of the Russian Federation ( SP-317.2015.1 ), by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund to the research project No. 16-42-243059 р_мол_а and No. 16-48-242092 р_офи_м, and by the Program of Foundation for Promotion of Small Enterprises in Science and Technology (No.6662ГУ2015) (“УМНИК” program). We acknowledge the support of Krasnoyarsk Regional Center for Collective Use of SB of RAS for equipment and technique. We thank A. V. Shabanov and O. V. Shabanova for assistance in dispersion preparation. We also thank V. G. Myagkov for useful discussion of the results. . - ISSN 1569-4410
Кл.слова (ненормированные):
PMMA opal
--
Photonic crystal
--
Electron microscopy
--
Angular resolved reflective spectroscopy
Аннотация:
PMMA opal crystal was prepared by a simple hybrid method, which includes sedimentation, meniscus formation and evaporation. We investigated three surfaces of this crystal by angle-resolved reflective light spectroscopy and SEM study. The angle-resolved reflective measurements were carried out in the 400–1100 nm range. We have determined the high-quality ordered surface of the crystal region. Narrow particle size distribution of the surface has been revealed. The average particle diameter obtained with SEM was nearly 361 nm. The most interesting result was that reflectivity of the surface turned out up to 98% at normal light incidence. Using a fit of dependences of the maximum reflectivity wavelength from an angle based on the Bragg–Snell law, the wavelength of maximum 0° reflectivity, the particle diameter and the fill factor have been determined. For the best surface maximum reflectivity wavelength of a 0° angle was estimated to be 869 nm. The particle diameter and fill factor were calculated as 372 nm and 0.8715, respectively. The diameter obtained by fitting is in excellent agreement with the particle diameter obtained with SEM. The reflectivity maximum is assumed to increase significantly when increasing the fill factor. We believe that using our simple approach to manufacture PMMA opal crystals will significantly increase the fabrication of high-quality photonic crystal templates and thin films
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Держатели документа:
Federal Research Centre Krasnoyarsk Scientific Center of the Siberian Branch of Russian Academy of Sciences, Akademgorodok 50, Krasnoyarsk, Russian Federation
Kirensky Institute of Physics, Federal Research Centre Krasnoyarsk Scientific Center of the Siberian Branch of Russian Academy of Sciences, Akademgorodok 50, Krasnoyarsk, Russian Federation
Доп.точки доступа:
Nemtsev, I. V.;
Немцев
,
Иван
Васильевич
; Tambasov, I. A.; Тамбасов, Игорь Анатольевич; Ivanenko, A. A.; Иваненко, Александр Анатольевич; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич
}
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6.
Anisotropy and crystallite
misalignment in textured superconductors / D. M. Gokhfeld, S. V. Semenov, M. I. Petrov [et al.]> // J. Supercond. Nov. Magn. - 2023. -
Vol. 36
,
Is. 1
. - P. 59-65,
DOI
10.1007/s10948-022-06454-8. - Cited References: 21. - This work was supported by the Russian Foundation for Basic Research and the Government of the Krasnoyarsk Territory, Krasnoyarsk Territorial Foundation for Support of Scientific and R&D Activities, project “Superconducting properties of YBCO incorporated by paramagnetic rare-earth elements” No. 20–42–240008 . - ISSN 1557-1939. - ISSN 1557-1947
Кл.слова (ненормированные):
Critical current
--
Anizotropy
--
BSCCO
--
Texture
--
Distribution function
--
Magnetization
--
Hysteresis loop
Аннотация:
A misalignment of anisotropic crystallites causes small values of anisotropy and decreases the critical current density of textured polycrystalline superconductors. To relate the crystallite misalignment and out-plane anisotropy, the magnetic properties of the textured Bi2223 polycrystalline superconductor were investigated. A distribution of orientation angles of crystallites was determined using different data: scanning electron microscopy images and hysteresis magnetization loops when an external magnetic field was applied at different angles with respect to the texturing plane of the sample. It was demonstrated that the standard deviation of the distribution and the magnetic disorder angle of crystallites in textured samples can be determined from the magnetization data in perpendicular directions. These data may be either the irreversible magnetization measured for two different orientations of the sample or the simultaneously measured magnetization projections parallel and perpendicular to the magnetic field.
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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russia
Siberian Federal University, Krasnoyarsk, 660041, Russia
Federal Research Center “Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences”, Krasnoyarsk, 660036, Russia
Доп.точки доступа:
Gokhfeld, D. M.; Гохфельд, Денис Михайлович; Semenov, S. V.; Семенов, Сергей
Васильевич
; Petrov, M. I.; Петров, Михаил Иванович; Nemtsev, I. V.;
Немцев
,
Иван
Васильевич
; Balaev, D. A.; Балаев, Дмитрий Александрович
}
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7.
Asymmetric resonant light
absorption in a chloroplast microstructure / P. S. Pankin, A. V. Shabanov, D. N. Maksimov [et al.]> // J. Opt. Soc. Am. B. - 2023. -
Vol. 40
,
Is. 1
. - P. 87-93,
DOI
10.1364/JOSAB.477110. - Cited References: 45 . - ISSN 0740-3224. - ISSN 1520-8540
Перевод заглавия:
Асимметричное резонансное поглощение света в микроструктуре хлоропласта
Аннотация:
It is shown that in the chloroplast periodic structure with a defect, the resonant absorption of light can be implemented. It is found that the resonant light absorption depends significantly on the position of a defect. In terms of the absorption of light energy, an asymmetric resonator is more efficient than a symmetric one.
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Держатели документа:
Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russia
Siberian Federal University, Krasnoyarsk, 660041, Russia
Siberian State University of Science and Technology, Krasnoyarsk, 660037, Russia
AO NPP Radiosvyaz, Krasnoyarsk, 660021, Russia
Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russia
Доп.точки доступа:
Pankin, P. S.; Панкин, Павел Сергеевич; Shabanov, A. V.; Шабанов, Александр
Васильевич
; Maksimov, D. N.; Максимов, Дмитрий Николаевич; Nabol, S. V.; Наболь, Степан
Васильевич
; Buzin, D. S.; Бузин, Даниил Сергеевич; Krasnov, A. I.; Краснов, Алексей Ильдарович; Romanenko, G. A.; Романенко, Гавриил Александрович; Sutormin, V. S.; Сутормин, Виталий Сергеевич; Gunyakov, V. A.; Гуняков, Владимир Алексеевич; Zelenov, Fyodor V.; Masyugin, Albert N.; Vyatkin, Vladimir P.; Nemtsev, I. V.;
Немцев
,
Иван
Васильевич
; Volochaev, M. N.; Волочаев, Михаил Николаевич; Vetrov, S. Ya.; Ветров, Степан Яковлевич; Timofeev, I. V.; Тимофеев,
Иван
Владимирович
}
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8.
Auger electron spectroscopy
of thin Cr2GeC films / T. A. Andryushchenko, S. A. Lyaschenko, S. N. Varnakov [et al.]> // Phys. Met. Metallogr. - 2023. -
Vol. 124
,
Is. 14
. - P. 1776-1782,
DOI
10.1134/S0031918X2360135X. - Cited References: 33. - The research was supported by the Russian Science Foundation (grant no. 21-12-00226, http://rscf.ru/project/21-12-00226/) . - ISSN 0031-918X. - ISSN 1555-6190
Кл.слова (ненормированные):
МАХ phases
--
chromium germanides
--
epitaxial thin films
--
Auger electron spectroscopy
--
magnetron sputtering co-deposition
Аннотация:
Auger electron spectroscopy was used to determine the phase composition of Cr2GeC MAX phase thin films. A distinctive feature of the formation of carbon-containing MAX phases is the shape of carbon Auger peaks, which is characteristic of metal carbides spectra. Features of the Auger spectra in the presence of secondary phases of chromium germanides are found. Their presence can manifest itself in an increase in the energy of the germanium peaks, which is caused by a chemical shift during the formation of the Cr–Ge bond. Moreover, we have detected the accumulation of electronic charge, which can be explained by the features of the surface morphology.
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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, 660036, Krasnoyarsk, Russia
Доп.точки доступа:
Andryushchenko, T. A.; Андрющенко, Татьяна Александровна; Lyashchenko, S. A.; Лященко, Сергей Александрович; Varnakov, S. N.; Варнаков, Сергей Николаевич; Lukyanenko, A. V.; Лукьяненко, Анна Витальевна; Nemtsev, I. V.;
Немцев
,
Иван
Васильевич
; Yakovlev, I. A.; Яковлев,
Иван
Александрович; Shevtsov, D. V.; Шевцов, Дмитрий Валентинович; Maximova, O. A.; Максимова, Ольга Александровна; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич
}
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9.
Bacterial cellulose (BC)
and BC composites: Production and properties / T. G. Volova, S. V. Prudnikova, E. G. Kiselev [et al.]> // Nanomaterials. - 2022. -
Vol. 12
,
Is. 2
. - Ст. 192,
DOI
10.3390/nano12020192. - Cited References: 113. - This research was financially supported by the State Assignment of the Ministry of Science and Higher Education of the Russian Federation No. FSRZ-2020-0006 . - ISSN 2079-4991
РУБ
Chemistry, Multidisciplinary + Nanoscience & Nanotechnology + Materials Science, Multidisciplinary + Physics, Applied
Рубрики:
SILVER NANOPARTICLES
GLUCONACETOBACTER-HANSENII
MICROBIAL CELLULOSE
Кл.слова (ненормированные):
bacterial cellulose
--
composites
--
production
--
properties
Аннотация:
The synthesis of bacterial cellulose (BC) by Komagataeibacter xylinus strain B-12068 was investigated on various C-substrates, under submerged conditions with stirring and in static surface cultures. We implemented the synthesis of BC on glycerol, glucose, beet molasses, sprat oil, and a mixture of glucose with sunflower oil. The most productive process was obtained during the production of inoculum in submerged culture and subsequent growth of large BC films (up to 0.2 m2 and more) in a static surface culture. The highest productivity of the BC synthesis process was obtained with the growth of bacteria on molasses and glycerol, 1.20 and 1.45 g/L per day, respectively. We obtained BC composites with silver nanoparticles (BC/AgNPs) and antibacterial drugs (chlorhexidine, baneocin, cefotaxime, and doripenem), and investigated the structure, physicochemical, and mechanical properties of composites. The disc-diffusion method showed pronounced antibacterial activity of BC composites against E. coli ATCC 25922 and S. aureus ATCC 25923.
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Держатели документа:
Siberian Fed Univ, Sch Fundamental Biol & Biotechnol, 79 Svobodny Pr, Krasnoyarsk 660041, Russia.
RAS, Krasnoyarsk Sci Ctr SB, Fed Res Ctr, Inst Biophys SB, 50-50 Akademgorodok, Krasnoyarsk 660036, Russia.
RAS, Krasnoyarsk Sci Ctr SB, Fed Res Ctr, LV Kirensky Inst Phys SB, 50-38 Akademgorodok, Krasnoyarsk 660036, Russia.
Russian Acad Sci, Siberian Branch, Krasnoyarsk Sci Ctr, Fed Res Ctr, 50 Akademgorodok, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Sch Petr & Gas Engn, 79 Svobodny Pr, Krasnoyarsk 660041, Russia.
Доп.точки доступа:
Volova, Tatiana G.; Prudnikova, Svetlana V.; Kiselev, Evgeniy G.; Nemtsev, I. V.;
Немцев
,
Иван
Васильевич
; Vasiliev, A. D.; Васильев, Александр Дмитриевич; Kuzmin, Andrey P.; Shishatskaya, Ekaterina I.; Ministry of Science and Higher Education of the Russian Federation [FSRZ-2020-0006]
}
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10.
Biodegradable microcarriers for
herbicide delivery / S. Thomas, R. V, H. J. Maria [и др.]> //
Биотехнология новых материалов - окружающая среда - качество жизни : материалы IV Международной научной конференция : Красноярск, 10–13 октября 2021 г. - Красноярск, 2021. - С. 156-159
Перевод заглавия:
Биоразлагаемые микроносители для доставки гербицидов
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Доп.точки доступа:
Thomas, S.; V, R.; Maria, H. J.; Kiselev, E. G.; Киселев, Евгений Геннадьевич; Nemtsev, I. V.;
Немцев
,
Иван
Васильевич
; "Biotechnology of new materials - environment - quality of life", International scientific conference(4 ; 2021 ; Oct. ; Krasnoyarsk (on-line)); "Биотехнология новых материалов - окружающая среда - качество жизни", международная научная конференция(4 ; 2021 ; окт. ; Красноярск (on-line)); Сибирский федеральный университет
}
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11.
Biodegradable polyhydroxyalkanoates formed
by 3- and 4-hydroxybutyrate monomers to produce nanomembranes suitable for drug delivery and cell culture / T. G. Volova, A. V. Demidenko, A. V. Murueva [et al.]> // Technologies. - 2023. -
Vol. 11
,
Is. 4
. - Ст. 106,
DOI
10.3390/technologies11040106. - 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) . - ISSN 2227-7080
Кл.слова (ненормированные):
degradable polyhydroxyalkanoates
--
copolymers P(3HB-co-4HB)
--
electrostatic molding
--
membranes
--
microstructure and properties
--
drugs
--
release kinetics
--
antibacterial activity
--
fibroblast proliferation
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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Держатели документа:
Institute of Biophysics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50/50 Akademgorodok, 660036 Krasnoyarsk, Russia
Institute of Fundamental Biology and Biotechnology, Siberian Federal University, 79 Svobodnyi av., 660041 Krasnoyarsk, Russia
Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50 Akademgorodok, 660036 Krasnoyarsk, Russia
L.V. Kirensky Institute of Physics, 50/12 Akademgorodok, 660036 Krasnoyarsk, Russia
Chemistry Engineering Centre, ITMO University, Kronverkskiy Prospekt, 49A, 197101 Saint Petersburg, Russia
Доп.точки доступа:
Volova, Tatiana G.; Demidenko, Aleksey V.; Murueva, Anastasiya V.; Dudaev, Alexey E.; Nemtsev, I. V.;
Немцев
,
Иван
Васильевич
; Shishatskaya, Ekaterina I.
}
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12.
Biodegradable polymer casting
films for drug delivery and cell culture / A. V. Murueva, A. E. Dudaev, E. I. Shishatskaya [et al.]> // Giant. - 2024. -
Vol. 19
. - Ст. 100314,
DOI
10.1016/j.giant.2024.100314. - Cited References: 112. - The study was funded by State Assignment of the Ministry of Science and Higher Education of the Russian Federation (project No. FWES-2021–0025) . - ISSN 2666-5425
Кл.слова (ненормированные):
Degradable polyhydroxyalkanoates
--
Copolymers P(3HB--3HV) and P(3HB--4HB)
--
Solvent casting films
--
Microstructure and properties
--
Drugs
--
Release kinetics
--
Antibacterial activity
--
Keratinocytes proliferation
Аннотация:
In this work, for the first time, films were obtained based on biodegradable polyhydroxyalkanoates (PHAs) - a copolymer of 3-hydroxybutyrate-co-3-hydroxyvalerate P(3HB-co-3HV) and a copolymer of 3-hydroxybutyrate-co-4-hydroxybutyrate P(3HB-co-4HB), containing drugs of different chemical structure and action - antibiotics (ceftazidime, doripenem), antiseptic (chlorhexidine) and tissue regeneration stimulator (Actovegin) for drug delivery and cell culture. Using SEM, AFM and measuring the contact angles of water wetting, it is shown how PHAs composition and loading of films of P(3HB-co-3HV) and P(3HB-co-4HB) with drugs affect the porosity, roughness indicators and adhesive properties of the surface. The constructed films are a depot form of drug, the release of which in vitro is realized for a long time, without burst releases, corresponds to Korsmeyer-Peppas and Higuchi models with diffusion character. Films loaded with antibiotics have pronounced antibacterial activity and suppress the development of pathogens S. aureus and E. coli, without a pronounced negative effect on the adhesion and proliferation of epidermal cells. In the cultures of human keratinocytes HaCaT it was shown that the presence of actovegin, as well as ceftazidime in the films, exhibits a stimulating effect, increasing their number. The results demonstrate the suitability of the depot-films for cellular technologies and are promising for the reconstruction of tissues complicated by infection.
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Держатели документа:
Institute of Biophysics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50/50 Akademgorodok, Krasnoyarsk 660036, Russia
Siberian Federal University, 79 Svobodnyi av., Krasnoyarsk 660041, Russia
Infochemistry Scientific Centre, ITMO University, Lomonosova St. 9, St. Petersburg 191002, Russia
Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50 Akademgorodok, Krasnoyarsk, 660036, Russia
L.V. Kirensky Institute of Physics, Federal Research Center “Krasnoyarsk Science Center SB RAS, 50/12 Akademgorodok, Krasnoyarsk, 660036, Russia
Доп.точки доступа:
Murueva, A. V.; Dudaev, A. E.; Shishatskaya, E. I.; Ghorabe, F. D. E.; Nemtsev, I. V.;
Немцев
,
Иван
Васильевич
; Lukyanenko, A. V.; Лукьяненко, Анна Витальевна; Volova, T. G.
}
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13.
Biodegradation of microbial
plastic poly(3-hydroxybutyrate) in soil ecosystems at different latitudes / S. V. Prudnikova, E. G. Kiselev, A. V. Demidenko [et al.]> // Giant. - 2024. -
Vol. 18
. - Ст. 100288,
DOI
10.1016/j.giant.2024.100288. - Cited References: 96. - The study was funded by State Assignment of the Ministry of Science and Higher Education of the Russian Federation (project No. FWES-2021-0025) . - ISSN 2666-5425
Кл.слова (ненормированные):
Poly(3-hydroxybutyrate)
--
Degradability
--
Red soil
--
Chernozem
--
Climatic conditions
--
Soil microorganisms
Аннотация:
The features of the degradation of the "green" plastic poly(3-hydroxybutyrate) [P(3HB)] in the soil of various geographical regions were studied: in red ferralitic soil under tropical conditions (Kerala, India) and in chernozem soil under conditions of a sharply continental climate (Eastern Siberia, Russia). Significant differences in the chemical composition, temperature, and humidity of the studied soils were revealed. The number of bacteria and mycelial fungi in the Siberian chernozem was higher than in the red soil of India, from 2-3 to 10 or more times. The degradation of P(3HB) films in the chernozem occurred faster than in the red soil, which was drier, with a low content of humus and minerals, and fewer microorganisms than the chernozem. The half-life of polymer samples in Siberia and India was 64.8 and 126.4 days, respectively. During degradation, a decrease in the molecular weight and an increase in the degree of crystallinity of polymer samples were revealed, which indicates a more active biodegradation of the amorphous phase of the polymer by soil microorganisms. The primary degraders of the polymer have been isolated and identified, and it has been shown that the complexes of degrading bacteria and fungi in different types of soils did not have common species. Despite the presence of species with pronounced depolymerase activity, the rate of film degradation in red ferralitic soils was slowed down by unfavorable environmental conditions. The obtained results confirm the importance of studying the process of PHA degradation in natural conditions.
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Держатели документа:
Siberian Federal University, 79 Svobodny pr, Krasnoyarsk 660041, Russia
Institute of Biophysics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50/50 Akademgorodok, Krasnoyarsk 660036, Russia
Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50 Akademgorodok, Krasnoyarsk 660036, Russia
L.V. Kirensky Institute of Physics, 50/12 Akademgorodok, Krasnoyarsk 660036, Russia
International and Interuniversity Centre for Nano Science and Nano Technology, Mahatma Gandhi University, Kottayam 686560, India
Доп.точки доступа:
Prudnikova, S. V.; Kiselev, E. G.; Demidenko, A. V.; Nemtsev, I. V.;
Немцев
,
Иван
Васильевич
; Shishatskaya, E. I.; Thomas, S.; Volova, T. G.
}
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14.
Biosynthesis and properties
of a P(3HB-co-3HV-co-4HV) produced by Cupriavidus necator B-10646 / N. O. Zhila, K. Y. Sapozhnikova, E. G. Kiselev [et al.]> // Polymers. - 2022. -
Vol. 14
,
Is. 19
. - Ст. 4226,
DOI
10.3390/polym14194226. - Cited References: 77. - The study was funded by State Assignment of the Ministry of Science and Higher Education of the Russian Federation (project No. 0287-2021-0025) . - ISSN 2073-4360
Кл.слова (ненормированные):
Cupriavidus necator B-10646
--
γ-valerolactone
--
biomass concentration
--
content and composition of copolymers
--
P(3HB-co-3HV-co-4HV)
--
physicochemical properties
--
films
--
surface properties
Аннотация:
Synthesis of P(3HB-co-3HV-co-4HV) copolymers by the wild-type strain Cupriavidus necator B-10646 on fructose or sodium butyrate as the main C-substrate with the addition of γ-valerolactone as a precursor of 3HV and 4HV monomers was studied. Bacterial cells were cultivated in the modes that enabled production of a series of copolymers with molar fractions of 3HV (from 7.3 to 23.4 mol.%) and 4HV (from 1.9 to 4.7 mol.%) with bacterial biomass concentration (8.2 ± 0.2 g/L) and PHA content (80 ± 2%). Using HPLC, DTA, DSC, X-Ray, SEM, and AFM, the physicochemical properties of copolymers and films prepared from them have been investigated as dependent on proportions of monomers. Copolymers are characterized by a reduced degree of crystallinity (Cx 38–49%) molecular weight characteristics Mn (45–87 kDa), and Mw (201–248 kDa) compared with P(3HB). The properties of the films surface of various composition including the porosity and surface roughness were studied. Most of the samples showed a decrease in the average pore area and an increase in their number with a total increase in 3HV and 4HV monomers. The results allow scaling up the productive synthesis of P(3HB-co-3HV-co-4HV) copolymers using Cupriavidus necator B-10646.
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Scopus
Держатели документа:
Institute of Biophysics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50/50 Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Basic Department of Biotechnology, School of Fundamental Biology and Biotechnology, Siberian Federal University, 79 Svobodnyi Av, Krasnoyarsk, 660041, Russian Federation
L.V. Kirensky Institute of Physics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50/38 Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Federal Research Center “Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences”, 50 Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Доп.точки доступа:
Zhila, N. O.; Sapozhnikova, K. Y.; Kiselev, E. G.; Nemtsev, I. V.;
Немцев
,
Иван
Васильевич
; Lukyanenko, A. V.; Лукьяненко, Анна Витальевна; Shishatskaya, E. I.; Volova, T. G.
}
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15.
Bulk CoNiFe-SiB amorphous
and nanostructured alloys produced by plasma spray deposition and dynamic compaction: formation of soft magnetic properties / E. A. Denisova> //
Phys. Procedia. - 2015. -
Vol. 75
. - P. 1238-1243,
DOI
10.1016/j.phpro.2015.12.136. - Cited References: 9. - This work was supported by Russian Foundation of Basic Research 15-08-06673 and RFBR-KRFS 15-42-04171 . - ISSN 1875-3892
Перевод заглавия:
CoNiFe-SiB, полученные методами плазменного напыления и динамического компактирования: формирование магнитомягких свойств
Кл.слова (ненормированные):
bulk nanostructured materials
--
dynamic compaction
--
plasma spray deposition
--
magnetic properties
Аннотация:
The bulk nanostructured Co58Ni10Fe5B16Si11 alloys were prepared by dynamic compaction and plasma spray deposition techniques. The investigation of structure and magnetic properties of bulk samples was carried out by X-ray diffraction, electron microscopy and correlation magnetometry. The bulk samples produced by both methods can be characterized as a heterophase system. The highest value of permeability 20 · 103 for plasma spraying coating is achieved when volume fraction of nanocrystalline phase with Curie temperature Tc ∼ 640 K is increased to 30%. The magnetic characteristics, such as the saturation magnetization, the Bloch constant, the local magnetic anisotropy field, the ferromagnetic resonance linewidth, and the coercivity remain unchanged after both compaction techniques. It was shown that the plasma spraying method allows to obtain bulk magnetically soft materials with magnetic parameters that are not inferior to the characteristics of a thermally treated rapidly quenched ribbon with the same composition.
Scopus
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,
Читать в сети ИФ
Доп.точки доступа:
Denisova, E. A.; Денисова, Елена Александровна; Kuzovnikova, L. A.; Кузовникова, Людмила Александровна; Iskhakov, R. S.; Исхаков, Рауф Садыкович; Kuzovnikov, A.; Lepeshev, A. A.; Nemtsev, I. V.;
Немцев
,
Иван
Васильевич
; Saunin, V. N.; Telegin, S. V.; Bondarenko, G. N.; Mal'tsev, V. K.; Мальцев, Вадим Константинович; International Conference on Magnetism(20 ; 2015 ; Jul ; 5-10 ; Barselona, Spain)
}
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16.
Bulk CoNiFe-SiB amorphous
and nanostructured alloys produced by plasma spray deposition and dynamic compaction: formation of soft magnetic properties / E. A. Denisova [et al.]> //
20th Int. Conf. on Magnetism (ICM-2015) : book of abstracts. - 2015. - Ст. TU.H-P55
Перевод заглавия:
Объемные аморфные и наноструктурированные сплавы CoNiFe-SiB, полученные плазменным напылением и динамическим компактированием: формирование магнитомягких свойств.
Материалы конференции
Доп.точки доступа:
Denisova, E. A.; Денисова, Елена Александровна; Kuzovnikova, L. A.; Кузовникова, Людмила Александровна; Kuzovnikov, A. A.; Кузовников А. А.; Iskhakov, R. S.; Исхаков, Рауф Садыкович; Lepeshev, A. A.; Лепешев, Анатолий Александрович; Nemtsev, I. V.;
Немцев
,
Иван
Васильевич
; Saunin, V. N.; Telegin, S. V.; International Conference on Magnetism(20 ; 2015 ; Jul ; 5-10 ; Barselona, Spain)
}
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17.
Bulk nanostructured materials
produced by dynamic compaction of composite Co-P/Cu and Al2O3/Co-P core-shell particles / L. A. Kuzovnikova [et al.]> //
VI Euro-Asian Symposium "Trends in MAGnetism" (EASTMAG-2016) : abstracts / ed.: O. A. Maksimova, R. D. Ivantsov. - Krasnoyarsk : KIP RAS SB, 2016. - Ст. P10.19. - P. 487. - This work was supported by Russian Foundation of Basic Research 15-08-06673, 16-03-00256, 16-03-00969 and RFBR-KRFS 15-42-04171 . - ISBN 978-5-904603-06-9
Кл.слова (ненормированные):
dynamic compaction
--
nanostructured materials
--
magnetic properties
Доп.точки доступа:
Kuzovnikova, L. A.; Denisova, E. A.; Денисова, Елена Александровна; Iskhakov, R. S.; Исхаков, Рауф Садыкович; Kuzovnikov, A. A.; Nemtsev, I. V.;
Немцев
,
Иван
Васильевич
; Mal'tsev, V. K.; Мальцев, Вадим Константинович; Институт физики им. Л.В. Киренского Сибирского отделения РАН
Нет сведений об экземплярах
}
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18.
Chemical modification of
films from biosynthetic poly-3-hydroxybutyrate aimed to improvement of their surface properties / A. N. Boyandin, A. A. Sukhanova, E. D. Nikolaeva, I. V. Nemtsev> // Macromolecular Symposia. - 2021. -
Vol. 395
: 4th International Conference on Progress on Polymers and Composites (NOV 26-28, 2020, Electr. Network),
Is. 1
. - Ст. 2000281,
DOI
10.1002/masy.202000281. - Cited References: 11. - This work was carried out by the team of the scientific laboratory "Smart Materials and Structures" within the state assignment of the Ministry of Science and Higher Education of the Russian Federation for the implementation of the project "Development of multifunctional smart materials and structures based on modified polymer composite materials capable to function in extreme conditions" (No. FEFE-2020-0015). The surface of the samples was investigated using a scanning electron microscope Hitachi TM3000 in the Krasnoyarsk Regional Center of Research Equipment of Federal Research Center "Krasnoyarsk Science Center SB RAS" . - ISSN 1022-1360. - ISSN 1521-3900
Перевод заглавия:
Химическая модификация плёнок из биосинтетического поли-3-гидроксибутирата, направленная на улучшение их поверхностных свойств
РУБ
Polymer Science
Кл.слова (ненормированные):
biocompatibility
--
polyhydroxyalkanoates
--
polyhydroxybutyrate
--
polymer modification
Аннотация:
Films from biodegradable poly-3-hydroxybutyrate are treated with chemical reagents to improve their hydrophilicity and biocompatibility. Two approaches are tested: a single treatment with alkali, acids, oxidizing or reducing agents, and a step-by step treatment of the alkali pre-activated surface of polymer films with bromine water and amino-compounds (ammonia or triethylamine). The maximal level of hydrophilicity (the lowest water contact angle and the highest polar component of the surface free energy) is registered after a single treatment with NaOH and after the step-by-step treatment. These samples also showed the best adhesion of mouse fibroblasts of NIH 3T3 line on the film surface. So, the proposed methods can be used to enhance hydropilicity and biocompatibility of biopolymer surface.
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Scopus
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WOS
Держатели документа:
Reshetnev Siberian State Univ Sci & Technol, 31 Krasnoyarsky Rabochy Av, Krasnoyarsk 660037, Russia.
Russian Acad Sci, Siberian Branch, Fed Res Ctr, Inst Biophys,Krasnoyarsk Sci Ctr, 50,Build 50, Krasnoyarsk 660036, Russia.
Russian Acad Sci, Siberian Branch, Int Sci Ctr Studying Extreme States Organism, Fed Res Ctr,Krasnoyarsk Sci Ctr, 50,Build 12-2, Krasnoyarsk 660036, Russia.
Russian Acad Sci, Siberian Branch, Krasnoyarsk Sci Ctr, Fed Res Ctr, 50 Akademgorodok, Krasnoyarsk 660036, Russia.
Доп.точки доступа:
Boyandin, A. N.; Sukhanova, Anna Alekseevna; Nikolaeva, Elena Dmitrievna; Nemtsev, I. V.;
Немцев
,
Иван
Васильевич
; Ministry of Science and Higher Education of the Russian Federation [FEFE-2020-0015]; International Conference on Progress on Polymers and Composites(4th ; 26-28 Nov. 2020)
}
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19.
Collagen conjugation to
carboxyl-modified poly(3-hydroxybutyrate) microparticles: preparation, characterization and evaluation in vitro / A. V. Murueva, A. M. Shershneva, I. V. Nemtsev [et al.]> // J. Polym. Res. - 2022. -
Vol. 29
,
Is. 8
. - Ст. 324,
DOI
10.1007/s10965-022-03181-5. - Cited References: 45. - This work was supported by the State Assignment of the Ministry of Science and Higher Education of the Russian Federation No. FSRZ-2020–0006 . - ISSN 1022-9760
Кл.слова (ненормированные):
Poly(3-hydroxybutyrate)
--
Collagen
--
Microparticles
--
Surface conjugation
--
Cytotoxicity
Аннотация:
The objective of this study was to produce and characterize collagen conjugated poly(3-hydroxybutyrate) (P3HB) microparticles. The double emulsion solvent evaporation technique was used to fabricate biopolymer microparticles. Alkaline hydrolysis method was used for carboxylation of P3HB microparticles followed by collagen (type I) conjugation using 1-ethyl-3-(3-dime-thylaminopropyl) carbodiimide and N-hydroxysuccinimide cross linkers. The successful chemical modification of P3HB-MP surface was evidenced by XPS analysis and FTIR spectroscopy, confirming an increase in the number of carboxyl groups and covalent bonding of collagen on the surface of functionalized P3HB microparticles (Col-P3HB-MPs). The amount of collagen present on Col-P3HB-MPs microparticles was quantified by the Lowry method. The average diameter and zeta-potential of microparticles were found to be dependent upon the method of preparation. The absence of cytotoxicity of modified Col-P3HB-MPs to fibroblast NIH 3T3 cells in vitro was corroborated by results of MTT assay. Staining with the fluorescent dye showed enhanced adhesion of fibroblasts onto Col-P3HB-MPs compared to the unmodified P3HB-MPs.
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Scopus
Держатели документа:
Institute of Biophysics, Siberian Branch of the Russian Academy of Sciences (IBP SB RAS), 50/50 Akademgorodok, Krasnoyarsk, Russian Federation
Institute of Fundamental Biology and Biotechnology, Siberian Federal University, 79 Svobodny, Krasnoyarsk, 660041, Russian Federation
Federal Research Center Krasnoyarsk Scientific Center of the Siberian Branch of the RAS (FRC KSC SB RAS), 50 Akademgorodok, Krasnoyarsk, 660036, Russian Federation
L.V. Kirensky Institute of Physics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS, 50/38 Akademgorodok, Krasnoyarsk, Russian Federation
Доп.точки доступа:
Murueva, A. V.; Shershneva, A. M.; Nemtsev, I. V.;
Немцев
,
Иван
Васильевич
; Shishatskaya, E. I.; Volova, T. G.
}
Найти похожие
20.
Comparison of the
microstructure and magnetic properties of films and composite powders based on 3-D metal / L. A. Chekanova, N. A. Shepeta, E. A. Denisova [et al.]> // J. Supercond. Novel Magn. - 2022. -
Vol. 35
,
Is. 11
. - P. 3241-3247,
DOI
10.1007/s10948-022-06339-w. - Cited References: 19. - This work was funded by the Russian Foundation for Basic Research, Krasnoyarsk Territory and Krasnoyarsk Regional Fund of Science, project number 20–43-240003 . - ISSN 1557-1939
Кл.слова (ненормированные):
Composition modulated materials
--
Multilayer films
--
Composite powders
--
Anisotropy field
--
Coercivity
--
Electroless deposition
Аннотация:
The comparison between the magnetic properties of materials with different curvature and spatial distribution of nanograins, such as particles (3D spatial distribution) and multilayer films (2D) was carried out. Functionally graded Co(P)/Ni(P) and Co(P)/CoNi(P) specimens have been fabricated by electroless deposition. The magnetic and structural properties are characterized by electron microscopy, X-ray diffraction, ferromagnetic resonance spectroscopy, and vibrating sample magnetometer. It was demonstrated that the interaction between the Ni(P) core and Co(P) shell of particles could form the functionally graded materials with tailored structure and coercive force. Furthermore, it was found that the magnetic parameters (the local anisotropy field, ferromagnetic resonance linewidth, and coercivity) are mainly determined by the artificially created interface boundaries for all grains’ spatial distribution. The magnetic anisotropy field and coercivity of Co(P)/Ni(P) flat films were characterized by lower values than those for spherical shell of particles with the same composition, produced by the same method.
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Scopus
Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
Reshetnev Siberian State University of Science and Technology, Krasnoyarsk, Russian Federation
Krasnoyarsk Railway Transport Institute, Branch of Irkutsk State Transport University, Krasnoyarsk, Russian Federation
Federal Research Center “Krasnoyarsk Science Center, Siberian Branch of the Russian Academy of Sciences”, Krasnoyarsk, Russian Federation
Доп.точки доступа:
Chekanova, L. A.; Чеканова, Лидия Александровна; Shepeta, N. A.; Denisova, E. A.; Денисова, Елена Александровна; Iskhakov, R. S.; Исхаков, Рауф Садыкович; Kuzovnikova, L. A.; Nemtsev, I. V.;
Немцев
,
Иван
Васильевич
}
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