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Общее количество найденных документов : 7
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Predictive radioecological mathematical model of the Yenisei river / A. G. Degermendzhi, L. G. Kosolapova, V. M. Belolipetskij // Radiatsionnaya Biologiya. Radioekologiya. - 2002. - Vol. 42, Is. 4. - С. 433-439 . - ISSN 0869-8031
Кл.слова (ненормированные):
Cesium -- Contamination -- Mathematical models -- Phosphorus -- Radioisotopes -- River pollution -- Cesium 137 -- Phosphorus 32 -- Radioecology -- The Yenisei river -- Ecosystems -- Bacteria (microorganisms) -- fresh water -- article -- ecosystem -- pollutant -- Russian Federation -- theoretical model -- Ecosystem -- Fresh Water -- Models, Theoretical -- Radioactive Pollutants -- Russia
Аннотация: A one-dimensional mathematical model of the Yenisei river ecosystem including hydrological, ecosystem and radioecologicl blocks has been developed. The model was used to evaluate contribution of different processes (transfer by water masses, dilution, radioactive decay, bioaccumulation) into self-purification of the river water from a radiation pollution. The pollution density of ecosystem components (bacteria, phyto-, zooplankton, phyto-, zoobenthos, detritus) with 137Cs and 32P is calculated.

Scopus
Держатели документа:
Inst. of Biophysics, Siberian Branch, RAS, Akademgorodok, Krasnoyarsk, 660036, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Degermendzhi, A.G.; Kosolapova, L.G.; Belolipetskij, V.M.

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The "quantization" of sensitivity coefficients is preserved in microbial populations heterogeneous with respect to growth rate and age / V. M. Nekrasov, A. V. Chernychev, A. G. Degermendzhy // Doklady Biological Sciences. - 2006. - Vol. 406, Is. 1-6. - P91-93, DOI 10.1134/S0012496606010261 . - ISSN 0012-4966
Кл.слова (ненормированные):
algorithm -- article -- bacterium -- biodiversity -- growth, development and aging -- population dynamics -- theoretical model -- time -- Algorithms -- Bacteria -- Biodiversity -- Models, Theoretical -- Population Dynamics -- Time Factors

Scopus
Держатели документа:
Institute of Chemical Kinetics and Combustion, Siberian Division, Russian Academy of Sciences, Institutskaya ul. 3, Novosibirsk, 630090, Russian Federation
Institute of Biophysics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Nekrasov, V.M.; Chernychev, A.V.; Degermendzhy, A.G.

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Methodology of biospherics for theoretical sciences and practical use. / N. S. Pechurkin, T. Maryasova // Life support & biosphere science : international journal of earth space. - 2000. - Vol. 7, Is. 2. - P219-224 . - ISSN 1069-9422
Кл.слова (ненормированные):
article -- biomass -- ecosystem -- energy metabolism -- food chain -- microclimate -- theoretical model -- Biomass -- Ecological Systems, Closed -- Ecosystem -- Energy Metabolism -- Food Chain -- Life Support Systems -- Models, Theoretical
Аннотация: This article deals with some methodological aspects of biospherics connected with theoretical sciences development and prospective use for practical application. Properties of experimental objects, methods and goals of biospherics as synthesising science have been discussed. The problem of stability of incomplete (natural and artificial) ecosystems has been considered. The concept of the ecosystem health based on effective functioning of different types of ecosystems has been developed.

Scopus
Держатели документа:
Institute of Biophysics, SBRAS, Krasnoyarsk, Russia. : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Pechurkin, N.S.; Maryasova, T.

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Mathematical modeling of population dynamics of unstable plasmid-containing bacteria during continuous cultivation in a chemostat / V. V. Ganusov, A. V. Bril'kov, N. S. Pechurkin // Biofizika. - 2000. - Vol. 45, Is. 5. - С. 908-914 . - ISSN 0006-3029
Кл.слова (ненормированные):
article -- bioreactor -- Escherichia coli -- fermentation -- genetics -- growth, development and aging -- Photobacterium -- plasmid -- theoretical model -- Bioreactors -- Escherichia coli -- Fermentation -- Models, Theoretical -- Photobacterium -- Plasmids
Аннотация: A structural approach to studying the regularities of the population dynamics of unstable recombinant bacterial strains in a chemostat was elaborated. The approach is based on the mathematical modeling of cell distribution in a population with different numbers of plasmid copies. The effect of decreased selective preference of plasmidless variants of the recombinant strain in the chemostat, which is related to a decrease in the number of plasmid copies in cells upon long-term incubation was analyzed. It is shown that the time of half-elimination of plasmids from the bacterial population in the steady state in the chemostat T1/2 does not depend on the maximum number of plasmid copies in cells N but is determined only by the mean time of generation g and the probability of the loss of one plasmid copy tau. The dependence of the preference of bacterial plasmidless variants on the efficiency of expression of genes cloned into plasmids in chemostat was analyzed using the recombinant strain E. coli Z905, whose plasmids pPHL-7 contain cloned genes for the luminescence system of marine luminescing bacteria Photobacterium leiognathi.

Scopus
Держатели документа:
Institute of Biophysics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, Russia. : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Ganusov, V.V.; Bril'kov, A.V.; Pechurkin, N.S.

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Biospherics: a new science / N. Pechurkin // Life support & biosphere science : international journal of earth space. - 1994. - Vol. 1, Is. 2. - P85-87 . - ISSN 1069-9422
Кл.слова (ненормированные):
article -- astronomy -- human -- microclimate -- Russian Federation -- space flight -- theoretical model -- Earth (Planet) -- Ecological Systems, Closed -- Humans -- Life Support Systems -- Models, Theoretical -- Russia -- Space Flight
Аннотация: The experience of human existence in the last few decades shows clearly that developed civilizations come into greater and greater antagonism with nature. Modern technology cannot on its own coexist easily with the biosphere without destroying key biological components. The necessity of comprehending the laws of development of the biosphere as a single whole is becoming more and more obvious and urgent. Because it is so precious and fragile, the biosphere cannot be subjected to any direct study which may harm it. Therefore this science depends on the study of analogs and small models such as artificial ecological systems with differing degrees of complexity and closure. On such model ecosystems we can (and must) study both the particular laws of development of individual elements and components of the ecosystems, and the general principles of turnover of the entire biospheric system. As this new science is being formed, it is necessary to develop the scientific basis of harmonizing the relationship of humanity and nature, to open the path to the next phase, termed the noosphere by Vernadsky. The principal objects of study are closed ecological systems, from simple microsystems to more sophisticated human life-support systems under extreme conditions on the Earth and in space. Biospherics by its very nature knows no political boundaries, and is by necessity an international effort. As such, it is deserving of support both intellectually and economically from all peoples.

Scopus
Держатели документа:
Institute of Biophysics (Siberian Branch of Russian Academy of Sciences), International Center for Closed Ecological Systems, Krasnoyarsk, Russia. : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Pechurkin, N.

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Untangling metabolic and spatial interactions of stress tolerance in plants. 1. Patterns of carbon metabolism within leaves / K. Y. Biel [et al.] // Protoplasma. - 2010. - Vol. 245, Is. 1. - P49-73, DOI 10.1007/s00709-010-0135-7 . - ISSN 0033-183X
Кл.слова (ненормированные):
Carbon metabolism -- Leaf anatomy -- Leaf form and function -- Maximal ecological utility -- Photosynthesis -- Stress tolerance Spinacia oleracea -- aspartate aminotransferase isoenzyme 1 -- bicarbonate -- carbon -- carbon dioxide -- catalase -- chlorophyll -- malate dehydrogenase -- oxygen -- ribulosebisphosphate carboxylase -- vegetable protein -- article -- enzymology -- histology -- light -- metabolism -- oxidation reduction reaction -- photosynthesis -- physiological stress -- physiology -- plant leaf -- spinach -- theoretical model -- Aspartate Aminotransferase, Cytoplasmic -- Bicarbonates -- Carbon -- Carbon Dioxide -- Catalase -- Chlorophyll -- Light -- Malate Dehydrogenase -- Models, Theoretical -- Oxidation-Reduction -- Oxygen -- Photosynthesis -- Plant Leaves -- Plant Proteins -- Ribulose-Bisphosphate Carboxylase -- Spinacia oleracea -- Stress, Physiological -- Spinacia oleracea
Аннотация: The localization of the key photoreductive and oxidative processes and some stress-protective reactions within leaves of mesophytic C3 plants were investigated. The role of light in determining the profile of Rubisco, glutamate oxaloacetate transaminase, catalase, fumarase, and cytochrome-c-oxidase across spinach leaves was examined by exposing leaves to illumination on either the adaxial or abaxial leaf surfaces. Oxygen evolution in fresh paradermal leaf sections and CO2 gas exchange in whole leaves under adaxial or abaxial illumination was also examined. The results showed that the palisade mesophyll is responsible for the midday depression of photosynthesis in spinach leaves. The photosynthetic apparatus was more sensitive to the light environment than the respiratory apparatus. Additionally, examination of the paradermal leaf sections by optical microscopy allowed us to describe two new types of parenchyma in spinach-pirum mesophyll and pillow spongy mesophyll. A hypothesis that oxaloacetate may protect the upper leaf tissue from the destructive influence of active oxygen is presented. The application of mathematical modeling shows that the pattern of enzymatic distribution across leaves abides by the principle of maximal ecological utility. Light regulation of carbon metabolism across leaves is discussed. В© 2010 Springer-Verlag.

Scopus
Держатели документа:
Institute of Basic Biological Problems, Russian Academy of Sciences, Pushchino, Moscow Region 142290, Russian Federation
Biosphere Systems International Foundation, Oro Valley, AZ 85755, United States
International Scientific Centre for Organism Extreme States Research, Krasnoyarsk Scientific Centre, Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation
Institute of Forest, Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation
Institute of Biophysics, Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation
Biocompatible Plant Research Institute, College of Natural Sciences, California State University, Chico, CA 95929-0555, United States : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Biel, K.Y.; Fomina, I.R.; Nazarova, G.N.; Soukhovolsky, V.G.; Khlebopros, R.G.; Nishio, J.N.

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Biophysical aspects of the biosphere impact on global climate. / D. A. Semenov, R. G. Khlebopros // Doklady. Biochemistry and biophysics. - 2002. - Vol. 387. - P338-339 . - ISSN 1607-6729
Кл.слова (ненормированные):
carbon monoxide -- article -- atmosphere -- biophysics -- chemistry -- climate -- greenhouse effect -- kinetics -- temperature -- theoretical model -- Atmosphere -- Biophysics -- Carbon Monoxide -- Climate -- Greenhouse Effect -- Kinetics -- Models, Theoretical -- Temperature

Scopus
Держатели документа:
Institute of Biophysics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036 Russia. : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Semenov, D.A.; Khlebopros, R.G.

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