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Thermomechanical analysis of isora nanofibril incorporated polyethylene nanocomposites / C. Jose, C. H. Chan, T. Winie [et al.] // Polym. - 2021. - Vol. 13, Is. 2. - Ст. 299. - P1-15, DOI 10.3390/polym13020299 . - ISSN 2073-4360
Кл.слова (ненормированные):
Avrami model -- Crystallization -- Mechanical properties -- Polymer-cellulose nanocomposites -- Aliphatic compounds -- Cellulose nanocrystals -- Crystallization kinetics -- Fillers -- Nanocomposites -- Nanofibers -- Polyethylenes -- Viscoelasticity -- Application range -- Cellulose nanofibers -- Composite fabrication -- Physio-chemical properties -- Polyethylene nanocomposites -- Thermo-mechanical analysis -- Uniform dispersions -- Viscoelastic properties -- Cellulose -- Aliphatic Compounds -- Cellulose -- Crystallization -- Fillers -- Plants -- Polyethylene -- Thermoplastics -- Viscoelasticity
Аннотация: The research on cellulose fiber-reinforced nanocomposites has increased by an unprecedented magnitude over the past few years due to its wide application range and low production cost. However, the incompatibility between cellulose and most thermoplastics has raised significant challenges in composite fabrication. This paper addresses the behavior of plasma-modified polyethylene (PE) reinforced with cellulose nanofibers extracted from isora plants (i.e., isora nanofibrils (INFs)). The crystallization kinetics of PE–INF composites were explained using the Avrami model. The effect of cellulose nanofillers on tuning the physiochemical properties of the nanocomposite was also explored in this work. The increase in mechanical properties was due to the uniform dispersion of fillers in the PE. The investigation on viscoelastic properties confirmed good filler–matrix interactions, facilitating the stress transfer. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.

Scopus
Держатели документа:
Newman College, Thodupuzha, Kerala, 685585, India
Faculty of Applied Sciences, Universiti Teknologi MARA, Shah Alam, 40450, Malaysia
International and Inter University Centre for Nanoscience and Nanotechnology, Mahatma Gandhi University, Kottayam, Kerala, 686560, India
School of Energy Materials, Mahatma Gandhi University, Kottayam, Kerala, 686560, India
School of Chemical Sciences, Mahatma Gandhi University, Kottayam, Kerala, 686560, India
Institute of Biophysics of the Siberian Branch of the Russian Academy of Sciences, Siberian Federal University, 79 Svobodnyi Av., Krasnoyarsk, 660041, Russian Federation
Dipartimento di Ingegneria, Universita di Palermo, Viale delle Scienze, Palermo, 90128, Italy
Consorzio INSTM, Firenze, 50121, Italy
Institut Jean Lamour, UMR 7198, CNRS, Universite de Lorraine, Vandoeuvre-les-Nancy, F-54500, France
Facolta di Ingegneria, Universita degli Studi di Enna “Kore”, Cittadella Universitaria, Enna, 94100, Italy
Instituto de Alta Investigacion Universidad de Tarapaca, Casilla 7D, Arica, 1000000, Chile

Доп.точки доступа:
Jose, C.; Chan, C. H.; Winie, T.; Joseph, B.; Tharayil, A.; Maria, H. J.; Volova, T.; Mantia, F. P.L.; Rouxel, D.; Morreale, M.; Laroze, D.; Mathew, L.; Thomas, S.

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Thermomechanical Analysis of Isora Nanofibril Incorporated Polyethylene Nanocomposites / C. Jose, C. H. Chan, T. Winie [et al.] // Polymers. - 2021. - Vol. 13, Is. 2. - Ст. 299, DOI 10.3390/polym13020299. - Cited References:46. - This study (polymer synthesis and investigation) was financially supported by the project "Agro preparations 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 on 9 April 2010, "On measures designed to attract leading scientists to the Russian institutions of higher learning". . - ISSN 2073-4360

РУБ Polymer Science

Кл.слова (ненормированные):
polymer-cellulose nanocomposites -- crystallization -- mechanical -- properties -- Avrami model
Аннотация: The research on cellulose fiber-reinforced nanocomposites has increased by an unprecedented magnitude over the past few years due to its wide application range and low production cost. However, the incompatibility between cellulose and most thermoplastics has raised significant challenges in composite fabrication. This paper addresses the behavior of plasma-modified polyethylene (PE) reinforced with cellulose nanofibers extracted from isora plants (i.e., isora nanofibrils (INFs)). The crystallization kinetics of PE-INF composites were explained using the Avrami model. The effect of cellulose nanofillers on tuning the physiochemical properties of the nanocomposite was also explored in this work. The increase in mechanical properties was due to the uniform dispersion of fillers in the PE. The investigation on viscoelastic properties confirmed good filler-matrix interactions, facilitating the stress transfer.

WOS
Держатели документа:
Newman Coll Educ, Thodupuzha 685585, Kerala, India.
Univ Teknol MARA, Fac Appl Sci, Shah Alam 40450, Malaysia.
Mahatma Gandhi Univ, Int & Inter Univ Ctr Nanosci & Nanotechnol, Kottayam 686560, Kerala, India.
Mahatma Gandhi Univ, Sch Energy Mat, Kottayam 686560, Kerala, India.
Mahatma Gandhi Univ, Sch Chem Sci, Kottayam 686560, Kerala, India.
Siberian Fed Univ, Russian Acad Sci, Siberian Branch, Inst Biophys, 79 Svobodnyi Av, Krasnoyarsk 660041, Russia.
Univ Palermo, Dipartimento Ingn, Viale Sci, I-90128 Palermo, Italy.
Consorzio INSTM, I-50121 Florence, Italy.
Univ Lorraine, CNRS, Inst Jean Lamour, UMR 7198, F-54500 Vandoeuvre Les Nancy, France.
Univ Studi Enna Kore, Facolta Ingn, Cittadella Univ, I-94100 Enna, Italy.
Univ Tarapaca, Inst Alta Invest, Casilla 7D, Arica 1000000, Chile.

Доп.точки доступа:
Jose, Cintil; Chan, Chin Han; Winie, Tan; Joseph, Blessy; Tharayil, Abhimanyu; Maria, Hanna J.; Volova, Tatiana; La Mantia, Francesco Paolo; Rouxel, Didier; Morreale, Marco; Laroze, David; Mathew, Lovely; Thomas, Sabu; La, Francesco Paolo; project "Agro preparations of the new generation: a strategy of construction and realization" [074-02-2018-328]; Government of the Russian Federation [220]

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Thermal, mechanical and biodegradation studies of biofiller based poly-3-hydroxybutyrate biocomposites / S. Thomas [et al.] // Int. J. Biol. Macromol. - 2019, DOI 10.1016/j.ijbiomac.2019.11.112 . - Article in press. - ISSN 0141-8130
Кл.слова (ненормированные):
Biocomposite -- Environmental degradation -- Physical properties -- Poly-3-hydroxybutyrate
Аннотация: Biodegradable poly-3-hydroxybutyrate [P(3HB)] and natural fillers - clay, peat, and birch wood flour – were used to prepare powdered composites to form pellets and granules. Pellets were produced by cold pressing of polymer and filler powder whereas granules were produced from the powders wetted with ethanol. Characterization techniques like IR spectroscopy, differential scanning calorimetry, X-ray analysis, mechanical analysis and electron microscopy were employed to study the properties of the initial P(3HB) and fillers and the composites. Analysis of the IR spectra of the composites showed the absence of chemical bonds between the components, i.e. the composites were physical mixtures. Young's moduli of the pellets prepared from initial materials varied considerably, and the highest value was obtained for P(3HB) pellets (350 MPa). Studies of biodegradation of composite pellets and granules in the soil for 35 days showed that the residual mass of the pellets had decreased to 68% for P(3HB); 56.4% for P(3HB)/peat; 67% for P(3HB)/wood flour, and 64% for P(3HB)/clay; granules exhibited a similar mass loss, residual mass of the granules of P(3HB) was 68.4%, P(3HB)/peat 46.4%; P(3HB)/wood flour 77%, and P(3HB)/clay 74%. This shows the significance of the material as an eco-friendly composite without sacrificing its mechanical properties. © 2018

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Держатели документа:
Siberian Federal University, 79 Svobodnyi Av., Krasnoyarsk, 660041, Russian Federation
International and Interuniversity Centre for Nano Science and Nano technology, Kottayam, Kerala, India
Institute of Biophysics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50/50 Akademgorodok, Krasnoyarsk, 660036, Russian Federation
L.V. Kirensky Institute of Physics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 43/50 Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Federal Research Center Krasnoyarsk Scientific Center of the Siberian Branch of Russian, Academy of Sciences, 50 Akademgorodok, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Thomas, S.; Shumilova, A. A.; Kiselev, E. G.; Baranovsky, S. V.; Vasiliev, A. D.; Nemtsev, I. V.; Kuzmin, A. P.; Sukovatyi, A. G.; Avinash, R. P.; Volova, T. G.

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Thermal, mechanical and biodegradation studies of biofiller based poly-3-hydroxybutyrate biocomposites / S. Thomas, A. A. Shumilova, E. G. Kiselev [et al.] // Int. J. Biol. Macromol. - 2020. - Vol. 155. - P1373-1384, DOI 10.1016/j.ijbiomac.2019.11.112. - Cited References:38. - This studywas financially 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".; The surface of the samples was investigated using a scanning electron microscope Hitachi TM-3000 in the Joint Instrument Use Center at the Krasnoyarsk Scientific Center of Siberian Branch of Russian Academy of Sciences. . - ISSN 0141-8130. - ISSN 1879-0003

РУБ Biochemistry & Molecular Biology + Chemistry, Applied + Polymer Science
Рубрики:
FORMULATIONS
   POLYHYDROXYALKANOATES
   POLYHYDROXYBUTYRATE
   SOIL
Кл.слова (ненормированные):
Poly-3-hydroxybutyrate -- Biocomposite -- Physical properties -- Environmental -- degradation
Аннотация: Biodegradable poly-3-hydroxybutyrate [P(3HB)] and natural fillers - clay, peat, and birch wood flour - were used to prepare powdered composites to form pellets and granules. Pellets were produced by cold pressing of polymer and filler powder whereas granules were produced from the powders wetted with ethanol. Characterization techniques like IR spectroscopy, differential scanning calorimetry, X-ray analysis, mechanical analysis and electron microscopy were employed to study the properties of the initial P(3HB) and fillers and the composites. Analysis of the IR spectra of the composites showed the absence of chemical bonds between the components, i.e. the composites were physical mixtures. Young's moduli of the pellets prepared from initial materials varied considerably, and the highest value was obtained for P(3HB) pellets (350 MPa). Studies of biodegradation of composite pellets and granules in the soil for 35 days showed that the residual mass of the pellets had decreased to 68% for P (3HB); 56.4% for P(3HB)/peat; 67% for P(3HB)/wood flour, and 64% for P(3HB)/clay; granules exhibited a similar mass loss, residual mass of the granules of P(3HB) was 68.4%, P(3HB)/peat 46.4%; P(3HB)/wood flour 77%, and P (3HB)/clay 74%. This shows the significance of the material as an eco-friendly composite without sacrificing its mechanical properties. (C) 2019 Published by Elsevier B.V.

WOS
Держатели документа:
Siberian Fed Univ, 79 Svobodnyi Av, Krasnoyarsk 660041, Russia.
Int & Interuniv Ctr Nano Sci & Nano Technol, Kottayam, Kerala, India.
Krasnoyarsk Sci Ctr SB RAS, Inst Biophys SB RAS, Fed Res Ctr, 50-50 Akademgorodok, Krasnoyarsk 660036, Russia.
Krasnoyarsk Sci Ctr SB RAS, LV Kirensky Inst Phys SB RAS, Fed Res Ctr, 43-50 Akademgorodok, Krasnoyarsk 660036, Russia.
Russian Acad Sci, Siberian Branch, Krasnoyarsk Sci Ctr, Fed Res Ctr, 50 Akademgorodok, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Thomas, Sabu; Shumilova, A. A.; Kiselev, E. G.; Baranovsky, S., V; Vasiliev, A. D.; Nemtsev, I., V; Kuzmin, Andrei Petrovich; Sukovatyi, A. G.; Avinash, R. Pai; Volova, T. G.; Nemtsev, Ivan; Government of the Russian Federation [220]; Project "Agropreparations of the new generation: a strategy of construction and realization" [074-02-2018-328]

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Thermal properties of diamond/carbon composites / A. Vlasov [et al.] // Diamond and Related Materials. - 2000. - Vol. 9: 10th European Conference on Diamond, Diamond-like Materials, Carbon Nanotubes, Nitrides and Silicon Carbide (12 September 1999 through 17 September 1999, Prague, Czech Republic, Is. 3-6. - P1104-1109, DOI 10.1016/S0925-9635(99)00256-3 . - ISSN 0925-9635
Кл.слова (ненормированные):
Diamond composites -- Laser flash technique -- TEM -- Thermal conductivity -- Grain size and shape -- Laser applications -- Nanostructured materials -- Phonons -- Thermal conductivity of solids -- Transmission electron microscopy -- Diamond composites -- Laser flash technique -- Industrial diamonds -- carbon -- composite -- diamond -- thermal conductivity
Аннотация: The thermal conductivity, k, of diamond/carbon composites with different ratios of sp 2/sp 3-bonded carbon is measured by the laser flash technique. The thermal conductivity of nanocomposites containing 6 nm diamond particles falls within the range of k=0.003-0.017 W/cmK at room temperature. The thermal conductivity increases while nanopores are gradually filled with pyrolytic carbon (pyrocarbon/diamond mass ratio variation of 0.0-0.5). Transmission electron microscopy data reveal a fairly uniform mixture of two carbon phases, the diamond and matrix having similar grain sizes. Estimates show that the phonon free path is limited by dimensions of carbon matrix layer. Thermal data for coarse-grain (1-2 ?m) composites are also given for comparison. (C) 2000 Elsevier Science S.A. All rights reserved.

Scopus
Держатели документа:
General Physics Institute, 38 Vavilov Str., Moscow 117942, Russian Federation
Ctrl. Res. Institute of Materials, 8 Paradnaya Str., St. Petersburg, Russian Federation
Institute of Crystallography, Leninsky prosp. 59, Moscow, Russian Federation
Institute of Biophysics, Krasnoyarsk 660036, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Vlasov, A.; Ralchenko, V.; Gordeev, S.; Zakharov, D.; Vlasov, I.; Karabutov, A.; Belobrov, P.

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The effect of the pesticide delivery method on the microbial community of field soil / S. Prudnikova, N. Streltsova, T. Volova // Environ. Sci. Pollut. Res. - 2020, DOI 10.1007/s11356-020-11228-7 . - Article in press. - ISSN 0944-1344
Кл.слова (ненормированные):
Biodegradable polymer -- P(3HB)-degrading microorganisms -- Pesticides -- Poly-3-hydroxybutyrate -- Slow release formulations -- Soil microorganisms
Аннотация: The study deals with the effects of herbicides (metribuzin, tribenuron-methyl, fenoxaprop-P-ethyl) and fungicides (tebuconazole, epoxiconazole, azoxystrobin) applied to soil as free pesticides or as slow release formulations embedded in a biodegradable composite matrix on the structure of the soil microbial community. The matrix consisted of a natural biopolymer poly-3-hydroxybutyrate [P(3HB)] and a filler—one of the natural materials (peat, clay, and wood flour). The soil microbial community was characterized, including the major eco-trophic groups of bacteria, dominant taxa of bacteria and fungi, and primary P(3HB)-degrading microorganisms, such as Pseudomonas, Bacillus, Pseudarthrobacter, Streptomyces, Penicillium, and Talaromyces. The addition of free pesticides adversely affected the abundance of soil microorganisms; the decrease varied from 1.4 to 56.0 times for different types of pesticides. The slow release pesticide formulations, in contrast to the free pesticides, exerted a much weaker effect on soil microorganisms, no significant inhibition in the abundance of saprotrophic bacteria was observed, partly due to the positive effects of the composite matrix (polymer/natural material), which was a supplementary substrate for microorganisms. The slow release fungicide formulations, like the free fungicides, reduced the total abundance of fungi and inhibited the development of the phytopathogens Fusarium and Alternaria. Thus, slow release formulations of pesticides preserve the bioremediation potential of soil microorganisms, which are the main factor of removing xenobiotics from the biosphere. © 2020, Springer-Verlag GmbH Germany, part of Springer Nature.

Scopus
Держатели документа:
Siberian Federal University, 79 Svobodny pr, Krasnoyarsk, 660041, Russian Federation
Institute of Biophysics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50/50 Akademgorodok, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Prudnikova, S.; Streltsova, N.; Volova, T.

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The effect of the pesticide delivery method on the microbial community of field soil / S. Prudnikova, N. Streltsova, T. Volova // Environ. Sci. Pollut. Res. - 2020, DOI 10.1007/s11356-020-11228-7. - Cited References:119. - This study was financially supported by the Ministry of Science and Higher Education of the Russian Federation, project "Agropreparations of the new generation: a strategy of construction and realization" (Agreement No 074-02-2018-328). . - Article in press. - ISSN 0944-1344. - ISSN 1614-7499

РУБ Environmental Sciences
Рубрики:
CONTROLLED-RELEASE
2,4-DICHLOROPHENOXYACETIC ACID
DEGRADATION
Кл.слова (ненормированные):
Soil microorganisms -- Pesticides -- Slow release formulations -- Biodegradable polymer -- Poly-3-hydroxybutyrate -- P(3HB)-degrading -- microorganisms
Аннотация: The study deals with the effects of herbicides (metribuzin, tribenuron-methyl, fenoxaprop-P-ethyl) and fungicides (tebuconazole, epoxiconazole, azoxystrobin) applied to soil as free pesticides or as slow release formulations embedded in a biodegradable composite matrix on the structure of the soil microbial community. The matrix consisted of a natural biopolymer poly-3-hydroxybutyrate [P(3HB)] and a filler-one of the natural materials (peat, clay, and wood flour). The soil microbial community was characterized, including the major eco-trophic groups of bacteria, dominant taxa of bacteria and fungi, and primary P(3HB)-degrading microorganisms, such asPseudomonas,Bacillus,Pseudarthrobacter,Streptomyces,Penicillium, andTalaromyces. The addition of free pesticides adversely affected the abundance of soil microorganisms; the decrease varied from 1.4 to 56.0 times for different types of pesticides. The slow release pesticide formulations, in contrast to the free pesticides, exerted a much weaker effect on soil microorganisms, no significant inhibition in the abundance of saprotrophic bacteria was observed, partly due to the positive effects of the composite matrix (polymer/natural material), which was a supplementary substrate for microorganisms. The slow release fungicide formulations, like the free fungicides, reduced the total abundance of fungi and inhibited the development of the phytopathogensFusariumandAlternaria. Thus, slow release formulations of pesticides preserve the bioremediation potential of soil microorganisms, which are the main factor of removing xenobiotics from the biosphere.

WOS
Держатели документа:
Siberian Fed Univ, 79 Svobodny Pr, Krasnoyarsk 660041, Russia.
Krasnoyarsk Sci Ctr SB RAS, Inst Biophys SB RAS, Fed Res Ctr, 50-50 Akademgorodok, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Prudnikova, Svetlana; Streltsova, Nadezhda; Volova, Tatiana; Ministry of Science and Higher Education of the Russian Federation, project "Agropreparations of the new generation: a strategy of construction and realization" [074-02-2018-328]

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Specific features in the change of electrical resistivity of carbon nanocomposites based on nanodiamonds under neutron irradiation / S. K. Gordeev [et al.] // Phys. Solid State. - 2013. - Vol. 55, Is. 7. - P1480-1486, DOI 10.1134/S1063783413070147. - Cited References: 24. - This study was supported by the Ministry of Education and Science of the Russian Federation (state contract nos. 14.518.11.7028 and 16.518.11.7034) and the Russian Foundation for Basic Research (project no. 10-02-00576). . - 7. - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
NANOPARTICLES
Аннотация: The physical properties of bulk composite materials consisting of nanodiamond, pyrolytic carbon, and nanopores were investigated. Samples were irradiated in a channel of the reactor by fast neutrons (E 0.5MeV) in ampoules with helium and in an aqueous medium. The dependences of the electrical transport properties of materials with different compositions on the dose of irradiation with fast neutrons were studied. A nonmonotonic change in the electrical resistivity with an increase in the neutron fluence was revealed. Possible explanations were offered for the observed dependence of the electrical resistivity on the neutron fluence, in particular, those related to the physical processes occurring in surface states of the three-phase system of the nanocomposite.

Держатели документа:
[Gordeev, S. K.
Korchagina, S. B.] Cent Res Inst Mat, St Petersburg 191014, Russia
[Konopleva, R. F.
Chekanov, V. A.
Belyaev, S. P.
Golosovskii, I. V.] Natl Res Ctr Kurchatov Inst, Konstantinov Petersburg Nucl Phys Inst, Gatchina 188300, Leningrad Oblas, Russia
[Denisov, I. A.
Belobrov, P. I.] Siberian Fed Univ, Russian Acad Sci, Siberian Branch, Inst Biophys, Krasnoyarsk 660036, Russia
[Belyaev, S. P.] St Petersburg State Univ, St Petersburg 199034, Russia : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Gordeev, S.K.; Konopleva, R.F.; Chekanov, V.A.; Korchagina, S.B.; Belyaev, S.P.; Golosovskii, I.V.; Denisov, I.A.; Belobrov, P.I.

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Properties of Bacterial Cellulose Composites with Silver Nanoparticles / I. P. Shidlovskiy [et al.] // Biophysics. - 2018. - Vol. 63, Is. 4. - P519-525, DOI 10.1134/S0006350918040188 . - ISSN 0006-3509
Кл.слова (ненормированные):
:bacterial cellulose -- antibacterial activity -- composites -- hydrothermal synthesis -- silver nanoparticles
Аннотация: Abstract: Composites of bacterial cellulose, which were synthesized in a culture of the strain of acetic acid bacteria Komagataeibacter xylinus VKPM B-12068, with silver nanoparticles were produced hydrothermally by varying the concentrations of AgNO3 in the medium. The presence of silver in the composites was confirmed by elemental analysis. An increase in the number of silver nanoparticles in the composite from 1.08 to 9.1 wt % (from 0.044 to 0.370 mg/cm2) was shown under increasing AgNO3 concentration in the medium from 0.0001 to 0.01 M. The structure, properties of the surface, and the physicochemical properties of the composites depending on the silver content were investigated using scanning electron microscopy, differential scanning calorimetry, X-ray diffraction, and a water contact-angle measurement system. Using the disk-diffusion method, it was shown that the resulting composites have a pronounced antibacterial activity against pathogenic microflora E. coli, Ps. eruginosa, and St. aureus. © 2018, Pleiades Publishing, Inc.

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Держатели документа:
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Shidlovskiy, I. P.; Shumilova, A. A.; Shishatskaya, E. I.; Volova, T. G.

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10.

Production of a Composite Based on Alumina Nanofibers and Detonation Nanodiamonds for Creating Phenol Indication Systems / N. O. Ronzhin, E. D. Posokhina, E. V. Mikhlina [et al.] // Dokl. Chem. - 2019. - Vol. 489, Is. 1. - P267-271, DOI 10.1134/S001250081911003X . - ISSN 0012-5008
Аннотация: Abstract: A composite of alumina nanofibers (ANF) and modified detonation nanodiamonds (MDND) was produced by mixing aqueous suspensions of the components in a weight ratio of 5 : 1 with subsequent incubation of the mixture for 15 min at 32°C. It was assumed that the formation of the composite is ensured by the difference of the zeta potentials of the components, which is negative for MDND and positive for ANF. Vacuum filtration of the mixture through a fluoroplastic filter (pore diameter 0.6 ?m) formed disks 40 mm in diameter, which were then heat-treated at 300°C to impart structural stability to the composite. Scanning electron microscopy detected that the obtained composite has a network structure, in which MDND particles are distributed over the surface of ANF. It was determined that the MDND particles incorporated in the composite catalyze the phenol–4-aminoantipyrine–H2O2 oxidative azo coupling reaction to form a colored product (quinoneimine). The applicability of the composite to repeated phenol detection in aqueous samples was demonstrated. © 2019, Pleiades Publishing, Ltd.

Scopus
Держатели документа:
Institute of Biophysics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, AkademgorodokKrasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Institute of Computational Modeling, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, AkademgorodokKrasnoyarsk, 660036, Russian Federation
Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, AkademgorodokKrasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Ronzhin, N. O.; Posokhina, E. D.; Mikhlina, E. V.; Simunin, M. M.; Nemtsev, I. V.; Ryzhkov, I. I.; Bondar, V. S.

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11.

РУБ Chemistry, Multidisciplinary
Рубрики:
NANOPARTICLES
GRAPHENE
Аннотация: A composite of alumina nanofibers (ANF) and modified detonation nanodiamonds (MDND) was produced by mixing aqueous suspensions of the components in a weight ratio of 5 : 1 with subsequent incubation of the mixture for 15 min at 32 degrees C. It was assumed that the formation of the composite is ensured by the difference of the zeta potentials of the components, which is negative for MDND and positive for ANF. Vacuum filtration of the mixture through a fluoroplastic filter (pore diameter 0.6 mu m) formed disks 40 mm in diameter, which were then heat-treated at 300 degrees C to impart structural stability to the composite. Scanning electron microscopy detected that the obtained composite has a network structure, in which MDND particles are distributed over the surface of ANF. It was determined that the MDND particles incorporated in the composite catalyze the phenol-4-aminoantipyrine-H2O2 oxidative azo coupling reaction to form a colored product (quinoneimine). The applicability of the composite to repeated phenol detection in aqueous samples was demonstrated.

WOS
Держатели документа:
Russian Acad Sci, Siberian Branch, Krasnoyarsk Sci Ctr, Inst Biophys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Siberian Branch, Inst Computat Modeling, Krasnoyarsk Sci Ctr, Krasnoyarsk 660036, Russia.
Russian Acad Sci, Siberian Branch, Krasnoyarsk Sci Ctr, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Ronzhin, N. O.; Posokhina, E. D.; Mikhlina, E. V.; Simunin, M. M.; Nemtsev, I. V.; Ryzhkov, I. I.; Bondar, V. S.; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [18-29-19078 mk]

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12.

Poly-3-hydroxybutyrate/chitosan composite films and nonwoven mats / A. A. Sukhanova, A. E. Murzova, A. N. Boyandin [et al.] // Int. J. Biol. Macromol. - 2020. - Vol. 165. - P2947-2956, DOI 10.1016/j.ijbiomac.2020.10.177 . - ISSN 0141-8130
Кл.слова (ненормированные):
Chitosan -- Composites -- Films -- Nonwoven mats -- Physicochemical properties -- Poly-3-hydroxybutyrate -- Tissue engineering
Аннотация: Composite films and nonwoven mats of the poly-3-hydroxybutyrate and chitosan natural polymers were prepared and investigated. DSC and FTIR techniques were used to confirm that P(3HB) blending with chitosan resulted in a decrease in P(3HB) crystallinity to 47% and 62% in the films and nonwoven mats, respectively. Scanning electron microscopy showed that addition of chitosan induced changes in the surface morphology of the composite films and a reduction in the diameter of ultrafine fibers in the nonwoven mats from 800 nm to 460 nm. The values of water contact angle for films (53°) and nonwoven mats (50.6°) suggested that chitosan enhanced hydrophilic properties and moisture absorption capacity of the composite materials. On the other hand, P(3HB) showed its reinforcing ability and improved the physical/mechanical properties of chitosan. The work included studies of in vitro biodegradation of the composite specimens and their ability to maintain cell growth and attachment in NIH 3T3 fibroblast culture. © 2020

Scopus
Держатели документа:
Reshetnev Siberian State University of Science and Technology, 31 Krasnoyarsky Rabochy Av., Krasnoyarsk, 660037, Russian Federation
Siberian Federal University, 79 Svobodnyi Av., Krasnoyarsk, 660041, Russian Federation
Institute of Biophysics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50/50 Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Federal Research Center Krasnoyarsk Scientific Center of the Siberian Branch of Russian Academy of Sciences, 50 Akademgorodok, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Sukhanova, A. A.; Murzova, A. E.; Boyandin, A. N.; Kiselev, E. G.; Sukovatyi, A. G.; Kuzmin, A. P.; Shabanov, A. V.

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13.

Poly-3-hydroxybutyrate/chitosan composite films and nonwoven mats / A. A. Sukhanova, A. E. Murzova, A. N. Boyandin [et al.] // Int. J. Biol. Macromol. - 2020. - Vol. 165. - P2947-2956, DOI 10.1016/j.ijbiomac.2020.10.177. - Cited References:54. - This study was carried out as part of the State Assignment of the Ministry of Education and Science of the Russian Federation to the team of the research laboratory "Intellectual Materials and Structures" within the project "Development of the methods for modifying polymer matrices containing particulate and fibrous fillers of various origins for creating smart multifunctional materials" (subject number FEFE-2020-0015). . - ISSN 0141-8130. - ISSN 1879-0003

РУБ Biochemistry & Molecular Biology + Chemistry, Applied + Polymer Science
Рубрики:
BIODEGRADABLE POLY-3-HYDROXYBUTYRATE
BIOMEDICAL APPLICATIONS
BACTERIAL
Кл.слова (ненормированные):
Composites -- Poly-3-hydroxybutyrate -- Chitosan -- Films -- Nonwoven mats -- Physicochemical properties -- Tissue engineering
Аннотация: Composite films and nonwoven mats of the poly-3-hydroxybutyrate and chitosan natural polymers were prepared and investigated. DSC and FTIR techniques were used to confirm that P(3HB) blending with chitosan resulted in a decrease in P(3HB) crystallinity to 47% and 62% in the films and nonwoven mats, respectively. Scanning electron microscopy showed that addition of chitosan induced changes in the surface morphology of the composite films and a reduction in the diameter of ultrafine fibers in the nonwoven mats from 800 nm to 460 nm. The values of water contact angle for films (53 degrees) and nonwoven mats (50.6 degrees) suggested that chitosan enhanced hydrophilic properties and moisture absorption capacity of the composite materials. On the other hand, P(3HB) showed its reinforcing ability and improved the physical/mechanical properties of chitosan. The work included studies of in vitro biodegradation of the composite specimens and their ability to maintain cell growth and attachment in NIH 3T3 fibroblast culture. (c) 2020 Published by Elsevier B.V.

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Держатели документа:
Reshetnev Siberian State Univ Sci & Technol, 31 Krasnoyarsky Rabochy Av, Krasnoyarsk 660037, Russia.
Siberian Fed Univ, 79 Svobodnyi Av, Krasnoyarsk 660041, Russia.
Krasnoyarsk Sci Ctr SB RAS, Inst Biophys SB RAS, Fed Res Ctr, 50-50 Akademgorodok, Krasnoyarsk 660036, Russia.
Russian Acad Sci, Fed Res Ctr, Siberian Branch, Krasnoyarsk Sci Ctr, 50 Akademgorodok, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Sukhanova, A. A.; Murzova, A. E.; Boyandin, A. N.; Kiselev, E. G.; Sukovatyi, A. G.; Kuzmin, A. P.; Shabanov, A., V; Ministry of Education and Science of the Russian FederationMinistry of Education and Science, Russian Federation [FEFE-2020-0015]

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14.

Novel spray-dried PHA microparticles for antitumor drug release / A. Shershneva [et al.] // Dry. Technol. - 2018. - Vol. 36, Is. 11. - P1387-1398, DOI 10.1080/07373937.2017.1407940. - Cited References:67. - This work was supported by the state budget allocated to the fundamental research at the Russian Academy of Sciences: [Project no. AAAA-A17- 117013050028-8]. . - ISSN 0737-3937. - ISSN 1532-2300

РУБ Engineering, Chemical + Engineering, Mechanical
Рубрики:
DRYING METHOD
   IN-VITRO
   BIODEGRADABLE NANOPARTICLES
   ORAL
Кл.слова (ненормированные):
5-Fluorouracil -- efficiency -- microparticles -- paclitaxel -- polyhydroxyalkanoates -- spray-drying
Аннотация: The production of poly-3-hydroxybutyrate (P3HB) and poly-3-hydroxybutyrate/polyethylene glycol (PEG)-based microparticles, loaded with antitumor drugs paclitaxel (PTX) and 5-Fluorouracil (5-FU) by spray-drying technique, was investigated. The average diameter of microparticles was found to be 3.4 +/- 0.5 pm and zeta potential was about -44 mV. The addition of surfactant PEG did not show any effect on the morphological characteristics of the particles. But the chemical structure of drug influenced on the properties. Microparticles had heterogeneous pores on the surface when the hydrophobic PTX was encapsulated. It was established that the addition of surfactant positively influenced on the properties of particles and led to the loading of 5-FU directly into the matrix. This is confirmed by the results of electron microscopy and dynamics of drug release in vitro. As a whole, the release profiles of PTX and 5-FU from composite P3HB/PEG microparticles were less than from P3HB microparticles. The results of the morphological evaluation of Hela cells demonstrated that the use of cytostatic drugs loaded in P3HB microparticles induces morphological changes associated with apoptosis (chromatin condensation, core fragmentation, margination of nucleus). Thus, the obtained results can serve as the basis for the development of new antitumor drugs of prolonged action, intended for various modes of administration.

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Держатели документа:
Siberian Fed Univ, Inst Fundamental Biol & Biotechnol, 79 Svobodny, Krasnoyarsk 660041, Russia.
SB RAS, Inst Biophys, Fed Res Ctr, Krasnoyarsk Sci Ctr, Tomsk, Russia.

Доп.точки доступа:
Shershneva, Anna; Murueva, Anastasiya; Nikolaeva, Elena; Shishatskaya, Ekaterina; Volova, Tatiana; Russian Academy of Sciences [AAAA-A17- 117013050028-8]

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15.

Low-temperature argon and ammonia plasma treatment of poly-3-hydroxybutyrate films: Surface topography and chemistry changes affect fibroblast cells in vitro / R. A. Surmenev [et al.] // Eur Polym J. - 2019. - Vol. 112. - P137-145, DOI 10.1016/j.eurpolymj.2018.12.040 . - ISSN 0014-3057
Кл.слова (ненормированные):
Cell adhesion -- Dielectric barrier discharge -- Plasma treatment -- Surface etching -- Wetting behaviour -- Ammonia -- Argon -- Cell adhesion -- Cell culture -- Chemical modification -- Contact angle -- Dielectric materials -- Electric discharges -- Fibroblasts -- Mammals -- Nitrogen plasma -- Plasma applications -- Surface roughness -- Surface treatment -- Temperature -- Topography -- Ammonia plasma treatment -- Dielectric barrier discharges -- Different proportions -- Plasma treatment -- Poly-3-hydroxybutyrate -- Poly3-hydroxybutyrate (PHB) -- Surface etching -- Wetting behaviour -- Wetting
Аннотация: Poly-3-hydroxybutyrate (PHB) films were plasma-treated using pure NH3, pure Ar or mixtures of the two different proportions (20%, 30%, 40%, 50%, 70% NH3 in Ar). Surface chemistry and surface topography changes of PHB films were observed after plasma processing in all plasma regimes. The XPS results confirmed the absence of chemical modification in the case of pure Ar plasma treatment. Nitrogen-containing groups (e.g., N–C[dbnd]O) were detected on the surfaces of P3HB films treated with NH3-containing plasma. The surfaces of the untreated P3HB films were hydrophobic, and plasma treatment turned the surfaces hydrophilic, irrespective of the treatment. A significant decrease in the contact angle and an increase in the free surface energy were observed. An insignificant surface ageing effect was observed when P3HB samples were exposed to air for 10 days. In NIH 3T3 mice fibroblast cells, cell adhesion was significantly improved after plasma treatment in an Ar atmosphere, which is likely related to the fact that there was a surface ? potential of 88.6 mV at neutral pH, causing a cleavage of the polymer chains and an increase in surface roughness. © 2018 Elsevier Ltd

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Держатели документа:
Physical Materials Science and Composite Materials Centre, National Research Tomsk Polytechnic University, Tomsk, 634050, Russian Federation
Fraunhofer Institute for Interfacial Engineering and Biotechnology IGB, Stuttgart, 70569, Germany
Synchrotron Radiation Facility ANKA, Karlsruhe Institute of Technology, 76344 Eggenstein-Leopoldshafen, Germany
Institute of Biophysics of Siberian Branch of Russian Academy of Sciences, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50/50 Akademgorodok, Krasnoyarsk, 660036, Russian Federation
School of Fundamental Biology and Biotechnology, Siberian Federal University, 79 Svobodny pr., Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Surmenev, R. A.; Chernozem, R. V.; Syromotina, D. S.; Oehr, C.; Baumbach, T.; Krause, B.; Boyandin, A. N.; Dvoinina, L. M.; Volova, T. G.; Surmeneva, M. A.

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16.

Low-field electron emission of diamond/pyrocarbon composites / A. V. Karabutov [et al.] // Journal of Vacuum Science and Technology B: Microelectronics and Nanometer Structures. - 2001. - Vol. 19: 13th International Vaccum Microelectronics Conference (14 August 2000 through 17 August 2000, Guangzhou, Is. 3. - P965-970, DOI 10.1116/1.1368669 . - ISSN 1071-1023
Кл.слова (ненормированные):
Carbon nanotubes -- Chemical bonds -- Chemical vapor deposition -- Composite materials -- Diamond films -- Electric conductivity -- Electron emission -- Electron energy levels -- Hysteresis -- Interfaces (materials) -- Raman scattering -- Semiconducting diamonds -- Semiconductor quantum wells -- Transmission electron microscopy -- X ray diffraction analysis -- X ray photoelectron spectroscopy -- Pyrocarbon composites -- Nanostructured materials
Аннотация: The properties of field electron emission for diamond/pyrocarbon nanocomposites produced from diamond particles surrounded by a pyrocarbon matrix were studied. Low-threshold emissions at fields of ?1 V/?m with no activation or hysterisis in the current versus voltage (I/V) behaviour were observed for the materials. Scanning tunneling-field emission microscopy was used to study the mechanisms of low-field electron emission from the composites, and a model based on quantum well effect at the diamond/graphite interface was proposed and discussed.

Scopus
Держатели документа:
General Physics Institute, Vavilova str. 38, Moscow 117942, Russian Federation
Central Research Institute of Materials, Paradnaya str. 8, St. Petersburg 191014, Russian Federation
Institute of Biophysics, Krasnoyarsk 660036, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Karabutov, A.V.; Frolov, V.D.; Konov, V.I.; Ralchenko, V.G.; Gordeev, S.K.; Belobrov, P.I.

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17.

Extraction of Nanochitin from Marine Resources and Fabrication of Polymer Nanocomposites: Recent Advances / B. Joseph, R. M. Sam, P. Balakrishnan [et al.] // Polymers. - 2020. - Vol. 12, Is. 8. - Ст. 1664, DOI 10.3390/polym12081664. - Cited References:128. - This study was financially supported by project "Agro preparations of the new generation: a strategy of construction and realization" (agreement number 074-02-2018-328) in accordance with resolution number 220 of the Government of the Russian Federation of 9 April 2010, "On measures designed to attract leading scientists to the Russian institutions of higher learning." S.C.M.F. is the recipient of an E2S UPPA Research Partnership Chair (MANTA: Marine Materials) supported by the "Investissements d'Avenir" French program managed by ANR (ANR-16-IDEX-0002), the Region Nouvelle-Aquitaine and the Communaute d'Agglomeration du Pays Basque, France. . - ISSN 2073-4360

РУБ Polymer Science
Рубрики:
NATURAL-RUBBER NANOCOMPOSITES
ELECTROSPUN PVDF MEMBRANE
ALPHA-CHITIN
Кл.слова (ненормированные):
nanochitin -- biodegradable -- marine -- reinforcement -- polysaccharides
Аннотация: Industrial sea food residues, mainly crab and shrimp shells, are considered to be the most promising and abundant source of chitin. In-depth understanding of the biological properties of chitin and scientific advancements in the field of nanotechnology have enabled the development of high-performance chitin nanomaterials. Nanoscale chitin is of great economic value as an efficient functional and reinforcement material for a wide range of applications ranging from water purification to tissue engineering. The use of polymers and nanochitin to produce (bio) nanocomposites offers a good opportunity to prepare bioplastic materials with enhanced functional and structural properties. Most processes for nanochitin isolation rely on the use of chemical, physical or mechanical methods. Chitin-based nanocomposites are fabricated by various methods, involving electrospinning, freeze drying, etc. This review discusses the progress and new developments in the isolation and physico-chemical characterization of chitin; it also highlights the processing of nanochitin in various composite and functional materials.

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Держатели документа:
Mahatma Gandhi Univ, Int & Inter Univ Ctr Nanosci & Nanotechnol, Kottayam 686560, Kerala, India.
Bishop Moore Coll, Res & Post Grad Dept Chem, Mavelikara 690110, Kerala, India.
Plant Lipids Pvt Ltd, Cochin 682311, Kerala, India.
Siberian Fed Univ, Russian Acad Sci, Inst Biophys, Krasnoyarsk 660041, Russia.
Univ Pau & Pays Adour, Inst Interdisciplinary Res Environm & Mat IPREM, IPREM, CNRS,E2S UPPA, F-64600 Anglet, France.
Mahatma Gandhi Univ, Sch Energy Mat, Kottayam 686560, Kerala, India.

Доп.точки доступа:
Joseph, Blessy; Sam, Rubie Mavelil; Balakrishnan, Preetha; Maria, Hanna J.; Gopi, Sreeraj; Volova, Tatiana; Fernandes, Susana C. M.; Thomas, Sabu; Government of the Russian Federation [074-02-2018-328, 220]; "Investissements d'Avenir" French programFrench National Research Agency (ANR) [ANR-16-IDEX-0002]; Region Nouvelle-AquitaineRegion Nouvelle-Aquitaine; Communaute d'Agglomeration du Pays Basque, France

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18.

Effect of nanoparticles in growth of test - Bacteria / S. V. Stolyar, L. A. Chekanova, R. N. Yaroslavtsev [et al.] // Journal of Physics: Conference Series : Institute of Physics Publishing, 2019. - Vol. 1399: International Scientific Conference on Applied Physics, Information Technologies and Engineering 2019, APITECH 2019 (25 September 2019 through 27 September 2019, ) Conference code: 156053, Is. 2. - Ст. 022029, DOI 10.1088/1742-6596/1399/2/022029
Кл.слова (ненормированные):
Coefficient of performance -- Hematite -- Industrial water treatment -- Nanomagnetics -- Nanoparticles -- Nickel compounds -- Nickel-Phosphorus -- Silver compounds -- Testing -- Water conservation -- Anti-microbial properties -- Klebsiella pneumoniae -- Magnetic composites -- Magnetic nano-particles -- Magnetic particle -- Pseudomonas aeruginosa -- Staphylococcus aureus -- Water treatment facilities -- Bacteria
Аннотация: Confident effect of five magnetic composite nanoparticles (FeP@Ag, FeP@Pd, CoP, NiP, Fe2O3@A) on growth of test bacteria colonies (Acinetobacter baumannii, scherichia coli, Klebsiella pneumoniae, Pseudomonas aeruginosa, Staphylococcus aureus) in five replicates each is considered. Reliable inhibitors of colonies of all five test bacteria were nanoparticles FeP@Ag. CoP nanoparticles are reliable inhibitors of growth of 4 test bacteria (except for test bacteria Escherichia oli). NiP nanoparticles are reliable inhibitors of growth of 2 test bacteria: Escherichia oli and Klebsiella pneumoniae. Bacteria Escherichia oli were most sensitive to the effect of magnetic nanoparticles; and bacteria Pseudomonas aeruginosa and Staphylococcus aureus were most resistant to the effect of magnetic nanoparticles. The prospects of the method are in the possibility of multiple reuse of the magnetic particles with antimicrobial properties for bacterial decontamination of the studied sources of water and removal of magnetic nanoparticles from the treated liquids by electromagnet. The method can find use in water treatment facilities for household, Industrial and medical wastes. © Published under licence by IOP Publishing Ltd.

Scopus
Держатели документа:
Federal Research Center, Krasnoyarsk Science Center, Siberian Branch of the Russian Academy of Sciences, Akademgorodok, 50, Krasnoyarsk, Russian Federation
Siberian Federal University, Svobodnyi pr. 79, Krasnoyarsk, Russian Federation
Kirensky Institute of Physics, 50/38 Akademgorodok, Krasnoyarsk, Russian Federation
Institute of Biophysics of the Siberian Branch of the Russian Academy of Sciences, 50/12 Akademgorodok, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Stolyar, S. V.; Chekanova, L. A.; Yaroslavtsev, R. N.; Ladygina, V. P.; Tirranen, L. S.

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19.

Effect of nanoparticles in growth of test - bacteria / S. V. Stolyar, L. A. Chekanova, R. N. Yaroslavtsev [et al.] // INTERNATIONAL SCIENTIFIC CONFERENCE ON APPLIED PHYSICS, INFORMATION : IOP PUBLISHING LTD, 2019. - Vol. 1399: International Scientific Conference on Applied Physics, Information (SEP 25-27, 2019, Siberian Fed Univ, Polytechn Inst, Krasnoyarsk, RUSSIA). - Ст. 022029. - (Journal of Physics Conference Series), DOI 10.1088/1742-6596/1399/2/022029. - Cited References:10 . -

РУБ Engineering, Multidisciplinary + Physics, Applied

Аннотация: Confident effect of five magnetic composite nanoparticles (FeP@Ag, FeP@Pd, CoP, NiP, Fe2O3@AF) on growth of test bacteria colonies (Acinetobacter baumannii, Escherichia coli, Klebsiella pneumoniae, Pseudomonas aeruginosa, Staphylococcus aureus) in five replicates each is considered. Reliable inhibitors of colonies of all five test bacteria were nanoparticles FeP@Ag. CoP nanoparticles are reliable inhibitors of growth of 4 test bacteria (except for test bacteria Escherichia coli). NiP nanoparticles are reliable inhibitors of growth of 2 test bacteria: Escherichia coli and Klebsiella pneumoniae. Bacteria Escherichia coli were most sensitive to the effect of magnetic nanoparticles; and bacteria Pseudomonas aeruginosa and Staphylococcus aureus were most resistant to the effect of magnetic nanoparticles. The prospects of the method are in the possibility of multiple reuse of the magnetic particles with antimicrobial properties for bacterial decontamination of the studied sources of water and removal of magnetic nanoparticles from the treated liquids by electromagnet. The method can find use in water treatment facilities for household, Industrial and medical wastes.

WOS
Держатели документа:
Russian Acad Sci, Siberian Branch, Krasnoyarsk Sci Ctr, Fed Res Ctr, Akademgorodok 50, Krasnoyarsk, Russia.
Siberian Fed Univ, Svobodnyi Pr 79, Krasnoyarsk, Russia.
Kirensky Inst Phys, Akademgorodok 50-38, Krasnoyarsk, Russia.
Russian Acad Sci, Siberian Branch, Inst Biophys, Akademgorodok 50-12, Krasnoyarsk, Russia.

Доп.точки доступа:
Stolyar, S., V; Chekanova, L. A.; Yaroslavtsev, R. N.; Ladygina, V. P.; Tirranen, L. S.

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20.

Constructing Slow-Release Formulations of Metribuzin Based on Degradable Poly(3-hydroxybutyrate) / A. N. Boyandin [et al.] // J. Agric. Food Chem. - 2016. - Vol. 64, Is. 28. - P5625-5632, DOI 10.1021/acs.jafc.5b05896 . - ISSN 0021-8561
Кл.слова (ненормированные):
controlled release -- degradable poly(3-hydroxybutyrate) -- herbicide -- metribuzin -- release kinetics -- Polyethylene glycols -- Weed control -- Controlled release -- Environmental release -- Herbicide release -- Laboratory system -- Matrix formulation -- Metribuzin -- Poly-3-hydroxybutyrate -- Release kinetics -- Herbicides
Аннотация: Experimental formulations of herbicide metribuzin embedded in matrices of degradable natural polymer poly(3-hydroxybutyrate) (P3HB) and its composites with poly(ethylene glycol) (PEG), poly-?-caprolactone (PCL), and wood powder have been prepared in the form of pressed pellets containing 75% polymeric basis (pure P3HB or its composite with a second component at a ratio of 7:3) and 25% metribuzin. Incubation of formulations in soil laboratory systems led to the degradation of the matrix and herbicide release. The most active release of metribuzin (about 60% of the embedded herbicide over 35 days) was detected for the P3HB/PEG carrier compared to the P3HB, P3HB/wood, and P3HB/PCL forms (30-40%). Thus, the study shows that herbicide release can be controlled by the matrix formulation. Metribuzin formulations exerted a significant herbicidal effect on the plant Agrostis stolonifera, used as a weed plant model. Application of these long-term formulations will make it possible to reduce environmental release of chemicals, which will restrict the rate of their accumulation in trophic chains of ecosystems and abate their adverse effects on the biosphere. © 2016 American Chemical Society.

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Держатели документа:
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, 50/50 Akademgorodok, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Boyandin, A. N.; Zhila, N. O.; Kiselev, E. G.; Volova, T. G.

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