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Lopatin, V. N.
Modelling optical properties of organic-mineral complexes in water ecosystems / V. N. Lopatin, N. V. Shepelevich, I. V. Prostakova // J. Phys. D. - 2005. - Vol. 38, Is. 15. - P. 2556-2563, DOI 10.1088/0022-3727/38/15/005. - Cited References: 22 . - ISSN 0022-3727

РУБ Physics, Applied
Рубрики:
SCANNING FLOW-CYTOMETRY
   LIGHT-SCATTERING
   STRATIFIED SPHERE
   PARTICLES
   INDEX
Кл.слова (ненормированные):
Approximation theory -- Ecosystems -- Inverse problems -- Light scattering -- Mathematical models -- Refractive index -- Suspensions (fluids) -- Water -- Generalization -- Integral light scattering indicatrix -- Organic-mineral complexes -- Spherical particles -- Complexation
Аннотация: Characteristics of organic-mineral complexes have been theoretically and experimentally studied in the paper, based on the method of integral light scattering indicatrix. Modelling of optical properties was realized using models of the coated spherical particles with a shell which is constant and changeable in the refractive index profile. General regularities have been revealed and generalized parameters for the method of integral light scattering indicatrix have been suggested.

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Держатели документа:
Res Inst Ecol Fish Breeding & Terraneous Biosyst, Krasnoyarsk 660017, Russia
Russian Acad Sci, Siberian Div, Inst Computat Modeling, Krasnoyarsk 660036, Russia
ИВМ СО РАН
Research Institute of Ecology of Fish-Breeding and Terraneous Biosystems, Krasnoyarsk, 66017, Russian Federation
Institute of Computational Modeling, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Shepelevich, N. V.; Prostakova, I. V.
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    Closed ecosystems as the means for the outer space exploration by men (Experimental results, perspectives) / I. I. Gitelzon, I. A. Terskov, B. G. Kovrov [et al.] // 32nd International Astronautical Congress : proceedings. - 1981. - Ст. IAF-81-164. - Bibliogr. at the end of the art.
   Перевод заглавия: Замкнутые экосистемы как средство освоения космоса человеком (экспериментальные результаты, перспективы)
Аннотация: Ecological expansion of man in space supposes the creation of considerably closed system of matter turnover within the spacecraft. The results of the experiment in the system - man - higher plants where atmosphere water and considerable part of food were regenerated are considered. The positive role of the supplement the biological processes of synthesis with physical and chemical processes of non-decomposing substances destruction is shown. The conclusion is made on the necessity of utilization of solar energy for realization photosynthesizing life-support systems in cosmos.

Материалы конгресса
Держатели документа:
USSR Academy of Sciences

Доп.точки доступа:
Gitelzon, I. I.; Гительзон, Иосиф Исаевич; Terskov, I. A.; Терсков, Иван Александрович; Kovrov, B. G.; Ковров, Борис Григорьевич; Lisovsky, H. M.; Лисовский, Генрих Михайлович; Sidko, F. Ya.; Сидько, Федор Яковлевич; Okladnikov, Yu. N.; Окладников, Юлий Николаевич; Trubachev, I. N.; Трубачев, Иван Николаевич; Pankova, I. M.; Панькова, Инна Максимовна; Gribovskaya, I. V.; Грибовская, Илиада Владимировна; Denisov, G. V.; Денисов, Геннадий Васильевич; Shilenko, M. P.; Шиленко, Мария Петровна; International Astronautical Congress(32 ; 1981 ; Sept. 6-12 ; Rome, Italy); Международный конгресс по астронавтике(32 ; 1981 ; 6-12 сент. ; Рим)
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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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