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Gurevich, Y. L.
Self-assembly of superparamagnetic ferrihydrite nanoparticles / Y. L. Gurevich, Yu. I. Mankov, R. G. Khlebopros // Dokl. Phys. - 2013. - Vol. 58, Is. 11. - P. 478-481, DOI 10.1134/S1028335813110104. - Cited References: 15. - This work was supported by the Russian Foundation for Basic Research, project nos. 08-08-00427_a and 10-08-00278_a, and by the Siberian Branch, Russian Academy of Sciences, Integration project no. 21. . - ISSN 1028-3358

РУБ Mechanics + Physics, Multidisciplinary
Рубрики:
CHAINS
CLUSTERS
Аннотация: A study was conducted to estimate the possibility of formation of chains of superparamagnetic nanoparticles of iron oxyhydroxides synthesized in a bacteria culture. The self-assembly of biogenic nanoparticles distinguished by low values of magnetization and small sizes is assumed to proceed due to the forces of magnetic dipole dipole interaction as an initial mechanism of aggregation and exchange-interaction forces, which provide the stability of chains. The microphotographs demonstrate the self-assembly of anisotropic cobalt-doped ferrihydrite nanoparticles in aggregates of ellipsoidal shape with sizes of about 550 × 300 nm and a platelike shape of 50-100 nm thick. The aggregates, in turn, are combined from blocks, which include a restricted number of nanoparticles of about 5 nm in diameter and have the shape of rods of 50-100 × 12 nm in size. The energy of degaussing fields of chains is reasonably high, which forces them to form two and three dimensional structures in which the compensation of such fields is provided.

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Публикация на русском языке Самосборка суперпарамагнитных наночастиц ферригидрита. - [S. l. : s. n.]

Держатели документа:
Russian Acad Sci, Siberian Branch, Krasnoyarsk Sci Ctr, Krasnoyarsk 660036, Russia
Russian Acad Sci, Kirenskii Inst Phys, Siberian Branch, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk 660041, Russia;

Доп.точки доступа:
Mankov, Yu.I.; Маньков, Юрий Иннокентьевич; Khlebopros, R. G.; Хлебопрос, Рэм Григорьевич; Russian Foundation for Basic Research [08-08-00427_a, 10-08-00278_a]; Siberian Branch, Russian Academy of Sciences, Integration project [21]
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Ferritization of industrial waste water and microbial synthesis of iron-based magnetic nanomaterials from sediments / M. I. Teremova [et al.] // Environ. Prog. Sustain. Energy. - 2016. - Vol. 35, Is. 5. - P. 1407-1414, DOI 10.1002/ep.12368. - Cited References:26. - The work has been carried out with support of grant of RFFI No 10-08-01278 and DST-ILTP-A.2.61 under DST-RFBR Indo-Russian Long term Collaborative Project. Authors are grateful to P.P. Pustoshilov, N.M. Kuchin, O.A. Bayukov, A.P. Puzyr and Lobova T.I. for assistance in experiment performance and valuable remarks. . - ISSN 1944-7442. - ISSN 1944-7450

РУБ Green & Sustainable science & Technology + Engineering, Environmental + Engineering, Chemical + Engineering, Industrial + Environmental Sciences
Рубрики:
ACIDITHIOBACILLUS FERROOXIDANS CELLS
POT MULTICOMPONENT SYNTHESIS
Кл.слова (ненормированные):
industrial wastes -- ferritization -- bacteria -- magnetic -- ferrihydrite -- nanoparticles
Аннотация: The precipitation of iron and associated heavy metals in industrial waste water and in model solution using ferritization and aerobic bacterial culture was investigated. Magnetic sediments extractable by magnetic separation (specific saturation magnetization of 16–36.8 G cm3/g) were produced by precipitation of iron by ferritization method at рН (8–10) and 60–80°С for 15–30 min. Nanoparticles of ferrihydrite or ferric hydroxide doped with associated metals (Co, Ni) were produced under precipitation of ferric iron in model solution with bacteria at the temperature 26–34°С. The radii of synthesized particles are 1–5 nm and nanoparticles of ferrihydrite are superparamagnetic in both un-doped and doped (Co, Ni, Zn) sets. Dispersed structure of biogenic nanoparticle sols, their magnetic and other properties were studied by atomic force microscopy, X-ray small-angle scattering, X-ray diffraction, electron magnetic resonance, Mössbauer and X-ray photoelectron spectroscopy.

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Держатели документа:
Russian Acad Sci, Siberian Branch, Krasnoyarsk Sci Ctr, Krasnoyarsk, Russia.
Russian Acad Sci, Inst Phys, Siberian Branch, Krasnoyarsk, Russia.
Russian Acad Sci, Boreskov Inst Catalysis & Chem Technol, Siberian Branch, Novosibirsk, Russia.
Russian Acad Sci, Inst Catalysis, Siberian Branch, Novosibirsk, Russia.
Siberian Fed Univ, Krasnoyarsk, Russia.
Natl Met Lab, CSIR, Jamshedpur, Bihar, India.

Доп.точки доступа:
Teremova, M. I.; Petrakovskaya, E. A.; Петраковская, Элеонора Анатольевна; Romanchenko, A. S.; Tuzikov, F. V.; Gurevich, Y. L.; Tsibina, O. V.; Yakubailik, E. K.; Якубайлик, Эдуард Константинович; Abhilash; RFFI [10-08-01278]; DST-RFBR Indo-Russian Long term Collaborative Project [DST-ILTP-A.2.61]
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The influence of nanoparticles of biogenic ferrihydrite on the rooting of lignified cuttings of the Ledebour willow / V. L. Bopp [et al.] // Biophysics. - 2018. - Vol. 63, Is. 4. - P. 621-628, DOI 10.1134/S0006350918040036. - Cited References: 38. - This study was supported by the Russian Foundation for Basic Research, the Government of the Kras-noyarsk krai, and the Krasnoyarsk regional foundation for support of scientific and technical activities under the research project no. 16-48-242158. . - ISSN 0006-3509
Аннотация: The influence of nanoparticles of biogenic ferrihydrite on the root formation of lignified cuttings of the Ledebour willow (Salix ledebouriana Trautv.) was investigated. The rooting of stem cuttings was performed in water using a phytohormone (indoyl-3-acetic acid) and nanoparticles. In comparison with the variants of incubation of cuttings in water and in a solution containing indolyl-3-acetic acid, the number and total length of the adventitious roots after 5 and 15 days of rooting were greatest in the cuttings treated with nanoparticles. In the early period of root development, increased levels of free radicals and intensities of the hyperfine structure lines of Mn2+ cleavage were recorded in the EPR spectra of plant tissues (lenticels of cuttings of treated with nanoparticles). The latter is related to the activity of manganese-containing superoxide dismutase. The response of cuttings to the treatment with nanoparticles was recorded by EPR before manifestation of adventitious root primordium initiation and development.

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Публикация на русском языке Влияние наночастиц биогенного ферригидрита на окоренение одревесневших черенков ивы ледебура [Текст] : статья / В. Л. Бопп [и др.] // Биофизика. - 2018. - Т. 63 № 4. - С. 786-794

Держатели документа:
Krasnoyarsk State Agrarian University, Krasnoyarsk, 660049, Russian Federation
Krasnoyarsk Science Center Federal Research Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Bopp, V. L.; Mistratova, N. A.; Petrakovskaya, E. A.; Петраковская, Элеонора Анатольевна; Gurevich, Y. L.; Teremova, M. I.; Khlebopros, R. G.
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    Bukhanov, E. R.
    A study of wheat wax optical properties / E. R. Bukhanov, Y. L. Gurevich, K. A. Shabanova // Photonics & Electromagnetics Research Symposium - Fall (PIERS - Fall) : IEEE, 2019. - P. 2890-2897. - (Progress in Electromagnetics Research Symposium), DOI 10.1109/PIERS-Fall48861.2019.9021781. - Cited References: 36
   Перевод заглавия: Изучение оптических свойств воска пшеницы

РУБ Engineering, Electrical & Electronic + Physics, Applied
Рубрики:
DIMENSIONAL PHOTONIC CRYSTALS
BLUE-GREEN FLUORESCENCE
Аннотация: Epicuticular waxes are a multifunctional interface between a plant and the environment. In this paper wheat leaves wax has been studied. Wax isolation was carried out using the method of gradual freezing in water followed by slow thawing. The morphology of the samples obtained was observed with a Hitachi SU3500 electron microscope. The structure period is determined by the nanotubes diameter which equals 150-200 nm. Random orientation of their long axes in the layer allows using a one-dimensional model to calculate the transmission spectrum of a photonic crystal with the help of the transfer matrix method. While making the calculations a defect that may be caused by possible interlayer heterogeneity also must be taken into account. Numerical modeling made it possible to identify the stop zone and the defective mode. Intense fluorescence appears in the optical area of the wax layer under ultraviolet radiation, thus increasing the efficiency of photosynthesis.

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Держатели документа:
Kirensky Inst Phys Fed Res Ctr KSC SB RAS, Krasnoyarsk, Russia.
Fed Res Ctr KSC SB RAS, Krasnoyarsk, Russia.
Reshetnev Siberian State Univ Sci & Technol, Krasnoyarsk, Russia.

Доп.точки доступа:
Gurevich, Y. L.; Shabanova, K. A.; Буханов, Евгений Романович; Photonics and Electromagnetics Research Symposium - Fall(2019 ; Dec 17-20 ; Xiamen, China)
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