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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Tolomeyev A.P., Zadereev E.S., Degermendzhy A.G.
Заглавие : Fine stratified distribution of Gammarus lacustris sars (Crustacea: Amphipoda) in the pelagic zone of the meromictic Lake Shira (Khakassia, Russia)
Место публикации : Doklady Biochemistry and Biophysics. - 2006. - Vol. 411, Is. 1. - С. 346-348. - ISSN 16076729 (ISSN) , DOI 10.1134/S1607672906060068
Ключевые слова (''Своб.индексиров.''): fresh water--animal--article--crustacea--demography--ecosystem--physiology--population dynamics--animals--crustacea--demography--ecosystem--fresh water--population dynamics--amphipoda--crustacea--gammarus--gammarus lacustris
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Slabko V.V., Volova T.G., Krasnov P.O., Kuzubov A.A., Shishatskaya E.I.
Заглавие : Surface modification of bioresorbable polymer scaffolds by laser treatment
Место публикации : Biophysics. - 2010. - Vol. 55, Is. 2. - С. 234-238. - ISSN 00063509 (ISSN) , DOI 10.1134/S0006350910020120
Ключевые слова (''Своб.индексиров.''): hydrophilicity--laser irradiation--microbial biocompatible and biodegradable polymers--polyhydroxybuturate--surface properties
Аннотация: The effect of laser irradiation on the properties of the surface of films prepared from a bioresorbable polymer poly(hydroxybuturate) has been studied. To determine the spectral region of the polymer optimal for the effective action of radiation on electron molecular bonds, theoretical investigations have been performed, which have shown that, for modifying the surface of PHB scaffolds, it is expedient to use a vacuum laser at a wavelength of 160 nm. Using laser irradiation at a power from 3 to 30 W, a series of films with modified surface, from roughnesses to perforations, have been obtained. The microstructure and properties of the film surface depending on the mode of irradiation have been examined, and conditions have been found under which the contact marginal angles of film wetting with water can be decreased to 50В° (compared with 76-80В° in starting products). Thus, conditions of laser treatment of PHB scaffolds have been theoretically substantiated and experimentally realized that provide a beneficial effect on the properties of the surface without destroying the structure of the material. В© 2010 Pleiades Publishing, Ltd.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Boyandin A.N., Kalacheva G.S., Rodicheva E.K., Volova T.G.
Заглавие : Synthesis of reserve polyhydroxyalkanoates by luminescent bacteria
Место публикации : Microbiology. - 2008. - Vol. 77, Is. 3. - С. 318-323. - ISSN 00262617 (ISSN) , DOI 10.1134/S0026261708030119
Ключевые слова (''Своб.индексиров.''): biosynthesis--chemical structure--luminescent bacteria--polyhydroxyalkanoates (pha)--bacteria (microorganisms)--photobacterium leiognathi--vibrio harveyi
Аннотация: The ability of marine luminescent bacteria to synthesize polyesters of hydroxycarboxylic acids (polyhydroxyalkanoates, PHA) as reserve macromolecules was studied. Twenty strains from the collection of the luminescent bacteria CCIBSO (WDCM839) of the Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, assigned to different taxa (Photobacterium leiognathi, Ph. phosphoreum, Vibrio harveyi, and V. fischeri) were analyzed. The most productive strains were identified, and the conditions ensuring high polymer yields in batch culture (40-70% of the cell dry mass weight) were determined. The capacity for synthesizing two-and three-component polymers containing hydroxybutyric acid as the main monomer and hydroxyvaleric and hydroxyhexanoic acids was revealed in Ph. leiognathi and V. harveyi strains. The results allow luminescent microorganisms to be regarded as new producers of multicomponent polyhydroxyalkanoates. В© 2008 MAIK Nauka.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Boyandin A.N., Kalacheva G.S., Rodicheva E.K., Volova T.G.
Заглавие : Luminous bacteria as potential producers of resorbed polyhydroxyalkanoate polyesters
Место публикации : Doklady Biochemistry and Biophysics. - 2007. - Vol. 416, Is. 1-6. - С. 248-251. - ISSN 16076729 (ISSN) , DOI 10.1134/S1607672907050067
Ключевые слова (''Своб.индексиров.''): photoprotein--polyester--polyhydroxyalkanoic acid--article--bacterium--chemistry--chemoluminescence--classification--genetic procedures--genetics--metabolism--photobacterium--phylogeny--time--bacteria--biosensing techniques--chemiluminescent measurements--luminescent proteins--photobacterium--phylogeny--polyesters--polyhydroxyalkanoates--time factors--bacteria (microorganisms)
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Volova T.G., Mironov P.V., Vasil'ev A.D.
Заглавие : Physicochemical properties of multicomponent poly(hydroxyalkanoates)
Место публикации : Biophysics. - 2007. - Vol. 52, Is. 3. - С. 293-297. - ISSN 00063509 (ISSN) , DOI 10.1134/S0006350907030062
Ключевые слова (''Своб.индексиров.''): hydroxyhexanoate--hydroxyvalerate--poly(hydroxybutyrate)--bacteria (microorganisms)--cupriavidus necator--insectivora
Аннотация: The properties of new five-component poly(hydroxyalkanoates) (PHA) formed by short-and medium-chain monomers synthesized by the bacterium Wautersia eutropha B5786 were studied by X-ray diffraction, IR spectroscopy, differential thermal analysis, and viscometry. The degree of crystallinity of PHA decreased from 72 to 57% as the molar fraction of hydroxyhexanoate increased from 2.5 to 18.0 mol%. The melting temperature (T m) and decomposition temperature (T d) of the multicomponent PHA are lower than those for poly(hydroxybutyrate), whose T m and T d are 168-170 and 260-265В°C, respectively. Both parameters of the multicomponent PHA decrease to 156 and 252В°C, respectively, as the hydroxyhexanoate mole fraction is raised. The effect of hydroxyhexanoate on the physicochemical properties of the PHA is similar to that of hydroxyvalerate observed previously. В© 2007 Pleiades Publishing, Inc.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Volova T.G., Plotnikov V.F., Shishatskaya E.I., Mironov P.V., Vasil'ev A.D.
Заглавие : Physicochemical properties of two-component polyhydroxyalkanoates, 3-hydroxybutyrate-3-hydroxyvalerate copolymers
Место публикации : Biophysics. - 2004. - Vol. 49, Is. 6. - С. 934-942. - ISSN 00063509 (ISSN)
Ключевые слова (''Своб.индексиров.''): hydroxybutyrate-hydroxyvalerate copolymers--physicochemical properties--polyhydroxyalkanoates--structure--bacteria (microorganisms)--cupriavidus necator
Аннотация: A series of two-component polyhydroxyalkanoates composed of hydroxybutyrate-hydroxyvalerate copolymers with different monomer ratio was obtained with the use of bacteria Ralstonia eutropha B5786. The properties of the polyhydroxyalkanoates in comparison with the homopolymer of hydroxybutyric acid were studied by X-ray diffraction analysis, IR spectroscopy, differential thermal analysis, and viscometry. The ratio of crystalline to amorphous phase in the copolymers tends to unity with increasing hydroxyvalerate content. This is accompanied by a decrease in the degree of crystallinity of the copolymers from 70-80 to 45-50%, the dependence is virtually linear within the range, of hydroxyvalerate mole fraction from several to 25-30 mol%. Thermal characteristics, melting temperature (Tm) and decomposition temperature (Td), of the polyhydroxyalkanoate copolymers are lower than those for polyhydroxybutyrate, whose Tm and Td are 168-170 and 260-265В°C, respectively. Both parameters decrease to 150-160 and 200-220В°C, respectively, when the hydroxyvalerate mole fraction is raised. No distinct correlation between polymer composition and molecular weight has been revealed. Copyright В© 2004 by MAIK "Nauka/Interperiodica".
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Belyaev B.A., Volova T.G., Drokin N.A., Shepov V.N.
Заглавие : The SHF dielectric permeability of polyhydroxybutyrate, a degradable biological polymer.
Место публикации : Doklady Biophysics. - 2000. - Vol. 370-372. - С. 9-12. - ISSN 00124974 (ISSN)
Ключевые слова (''Своб.индексиров.''): hydroxybutyric acid--polymer--article--chemistry--electricity--electromagnetic field--temperature--electromagnetic fields--electrostatics--hydroxybutyrates--polymers--temperature
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gladyshev M.I., Sushchik N.N., Makhutova O.N., Dubovskaya O.P., Buseva Z.F., Fefilova E.B., Semenchenko V.P., Kalachova G.S., Kononova O.N., Baturina M.A.
Заглавие : Differences in fatty acid composition of cladocerans and copepods from cold and warm lakes
Место публикации : Doklady Biochemistry and Biophysics. - 2013. - Vol. 451, Is. 1. - С. 183-186. - ISSN 16076729 (ISSN) , DOI 10.1134/S1607672913040042
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gladyshev M.I., Sushchik N.N., Makhutova O.N., Kalachova G.S., Malyshevskaya K.K.
Заглавие : Differences in fatty acid composition of food and tissues of grayling from the Yenisei River
Место публикации : Doklady Biochemistry and Biophysics. - 2012. - Vol. 445, Is. 1. - С. 194-196. - ISSN 16076729 (ISSN) , DOI 10.1134/S1607672912040035
Ключевые слова (''Своб.индексиров.''): fatty acid--animal--article--female--fish--food analysis--male--metabolism--animals--fatty acids--female--fishes--food analysis--male
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gladyshev M.I., Kharitonov A.Y., Popova O.N., Sushchik N.N., Makhutova O.N., Kalacheva G.S.
Заглавие : Quantitative estimation of dragonfly role in transfer of essential polyunsaturated fatty acids from aquatic to terrestrial ecosystems
Место публикации : Doklady Biochemistry and Biophysics. - 2011. - Vol. 438, Is. 1. - С. 141-143. - ISSN 16076729 (ISSN) , DOI 10.1134/S1607672911030094
Ключевые слова (''Своб.индексиров.''): unsaturated fatty acid--animal--article--chemistry--ecosystem--female--insect--male--animals--ecosystem--fatty acids, unsaturated--female--insects--male--anisoptera (dragonflies)
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11.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gladyshev M.I., Semenchenko V.P., Dubovskaya O.P., Fefilova E.B., Makhutova O.N., Buseva Z.F., Sushchik N.N., Baturina M.A., Razlutskij V.I., Lepskaya E.V., Kalacheva G.S.
Заглавие : Effect of Water Temperature on the Content of Essential Polyunsaturated Fatty Acids in Freshwater Zooplankton
Место публикации : Doklady Biochemistry and Biophysics. - 2011. - Vol. 437, Is. 1. - С. 57-59. - ISSN 16076729 (ISSN) , DOI 10.1134/S1607672911020013
Ключевые слова (''Своб.индексиров.''): docosahexaenoic acid--fresh water--icosapentaenoic acid--unsaturated fatty acid--water--animal--article--chemistry--copepod--environmental monitoring--metabolism--temperature--zooplankton--animals--copepoda--docosahexaenoic acids--eicosapentaenoic acid--environmental monitoring--fatty acids, unsaturated--fresh water--temperature--water--zooplankton
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12.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gladyshev M.I., Lepskaya E.V., Sushchik N.N., Makhutova O.N., Kalacheva G.S.
Заглавие : Differences in fatty acid composition between smolts of Sockeye Salmon and adults migrated from sea to lake for spawning
Место публикации : Doklady Biochemistry and Biophysics. - 2010. - Vol. 430, Is. 1. - С. 29-32. - ISSN 16076729 (ISSN) , DOI 10.1134/S1607672910010096
Ключевые слова (''Своб.индексиров.''): fatty acid--fresh water--sea water--animal--article--chemistry--cytology--female--male--metabolism--muscle--physiology--population migration--reproduction--salmon--sea--animal migration--animals--fatty acids--female--fresh water--male--muscles--oceans and seas--reproduction--salmon--seawater--oncorhynchus nerka
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13.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gladyshev M.I., Sushchik N.N., Makhutova O.N., Kalacheva G.S., Kolmakova A.A., Kravchuk E.S., Dubovskaya O.P.
Заглавие : Efficiency of transfer of essential polyunsaturated fatty acids along trophic chains in aquatic ecosystems
Место публикации : Doklady Biochemistry and Biophysics. - 2009. - Vol. 426, Is. 1. - С. 158-160. - ISSN 16076729 (ISSN) , DOI 10.1134/S1607672909030089
Ключевые слова (''Своб.индексиров.''): essential fatty acid--unsaturated fatty acid--water--article--ecosystem--metabolism--ecosystem--fatty acids, essential--fatty acids, unsaturated--water
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14.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Volkova E.N., Zadereev E.S.
Заглавие : Effect of methyl farnesoate on the change of the reproduction mode in Moina macrocopa (Cladocera)
Место публикации : Doklady Biochemistry and Biophysics. - 2012. - Vol. 447, Is. 1. - С. 282-285. - ISSN 16076729 (ISSN) , DOI 10.1134/S1607672912050158
Ключевые слова (''Своб.индексиров.''): farnesoic acid methyl ester--unsaturated fatty acid--animal--article--cladocera--drug effect--female--parthenogenesis--physiology--reproduction--animals--cladocera--fatty acids, unsaturated--female--parthenogenesis--reproduction
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15.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Rodionova N.S., Petushkov V.N., Belobrov P.I.
Заглавие : Kinetic features of switching of bacterial luciferase from one aldehyde substrate to another
Место публикации : Biophysics. - 1988. - Vol. 33, Is. 3. - С. 424-430. - ISSN 00063509 (ISSN)
Аннотация: In luciferase isolated from luminescing bacteria Vibrio harveyi the authors have studied the dynamics of the luminescence with aliphatic aldehydes C10, C12 and C14 taken in pairs in the reaction with photoreduced flavin mononucleotide (FMN) and in the conjugated system NAD В· H: :FMN-oxidoreductase-luciferase. The kinetic characteristics of endogenous aldehyde have been determined. It is shown that the process of switching of luciferase from one aldehyde substrate to another is dependent on chain length and the order of introducing the aldehydes into the reaction mixture. Analysis of the "matrix of successive perturbations" gave a numerical matrix of the probabilities of oxidation of the aldehydes in the luminescent reaction. An order of preference of the aldehydes on their binding to luciferase is constructed. В© 1989.
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16.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Belobrov P.I.
Заглавие : Behaviour of the residue of glutamic acid on self-organization of protein molecules
Место публикации : Biophysics. - 1975. - Vol. 20, Is. 1. - С. 18-21. - ISSN 00063509 (ISSN)
Ключевые слова (''Своб.индексиров.''): glutamic acid--protein--computer analysis--in vitro study--theoretical study
Аннотация: The method of atom-atom potentials has been used to study the glutamyl dipeptide in ionized (glu-) and non-ionized (glu) states. A calculation has been made with a computer of the conformational maps and the statistical sums of glu and glu-. It was found that on transition of glu glu- fall in the energy exceeds the free energy of initiation of the helix with an increased probability of the helical state of the molecule of glu-. From this it is concluded that glu- may in certain conditions be the embryo of the helix on self-organization of protein. В© 1975.
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17.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Shevyrnogov A.P., Vysotskaya G.S.
Заглавие : Observed trends of chlorophyll concentration in the surface layer of the northern and central Atlantic (1979-1983)
Место публикации : Advances in Space Research. - 1998. - Vol. 22, Is. 5. - С. 701-704. - ISSN 02731177 (ISSN) , DOI 10.1016/S0273-1177(97)01136-8
Ключевые слова (''Своб.индексиров.''): chlorophyll--primary production--remote sensing--atlantic ocean
Аннотация: To preserve and utilize the biosphere it is imperative that we understand the long-term dynamics of the primary production process on our planet. Variability of chlorophyll concentration in the ocean is one of the most important components of this process. However, size and access make its investigation labour-intensive. Dependence of primary production on high variability of hydrophysical phenomena in the ocean (fluctuations of currents, frontal zones, etc.) makes it difficult to locate points to measure chlorophyll concentration dynamics. To locate such quasistationary zones with respect to seasonal dynamics of chlorophyll concentration by satellite data the Institute of Biophysics (Russian Academy of Sciences, Siberian Branch) has developed a geoinformation system. Its use made it possible to locate such zones over the entire ocean. The work shows zones on the Central and Northern Atlantic. They form the ground to analyse perennial dynamics of chlorophyll concentration. The quasistationary zones are proposed for systematic monitoring of phytopigment concentration by space-borne and marine craft.
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18.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Terskov I.A., Gitel'zon I.I., Shevyrnogov A.P.
Заглавие : Measurement of chlorophyll in surface waters from an airplane
Место публикации : Doklady Biophysics. - 1976. - Vol. Vol.226-228. - С. 30-33. - ISSN 00124974 (ISSN)
Ключевые слова (''Своб.индексиров.''): chlorophyll--methodology
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19.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Shevyrnogov A., Vysotskaya G., Shevyrnogov E.
Заглавие : A study of the stationary and the anomalous in the ocean surface chlorophyll distribution by satellite data
Место публикации : International Journal of Remote Sensing. - 2004. - Vol. 25, Is. 7-8. - С. 1383-1387. - ISSN 01431161 (ISSN)
Ключевые слова (''Своб.индексиров.''): chlorophyll--data reduction--oceanography--planets--probability--satellite communication systems--biospheres--remote sensing--chlorophyll--concentration (composition)--remote sensing--satellite data--sea surface
Аннотация: Variability of chlorophyll concentration in the ocean is one of the most important components of the primary production process on the planet. To preserve the biosphere and to make appropriate use of it, it is imperative to have a deep insight into the long-term dynamics of the primary production on the planet. To investigate the dynamics of chlorophyll concentration based on satellite data, the Institute of Biophysics (Russian Academy of Sciences, Siberian Branch) has developed a geoinformation system. It was used to detect the areas in the global ocean that are quasistationary in relation to seasonal dynamics of chlorophyll concentration. Areas such as these, found in the Indian Ocean, are described in this work. These areas form the basis for the analysis of long-term dynamics of chlorophyll concentration. In these quasistationary zones systematic monitoring of phytopigment concentration is conducted by space-borne and marine craft. The work presents long-term satellite-based data on the space distribution of anomalous deviations of chlorophyll concentration in the ocean. An anomaly criterion is proposed and maps of Pacific Ocean areas with a high probability of anomalies are presented. В© 2004 Taylor and Francis Ltd.
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20.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Nesterenko T.V., Tikhomirov A.A., Shikhov V.N.
Заглавие : Influence of excitation light intensity and leaf age on the slow chlorophyll fluorescence transient in radish
Место публикации : Biophysics (Russian Federation). - 2012. - Vol. 57, Is. 4. - С. 464-468. - ISSN 00063509 (ISSN) , DOI 10.1134/S0006350912040136
Ключевые слова (''Своб.индексиров.''): leaf ontogeny--light dependence--slow fluorescence induction--temporal indices--raphanus sativus
Аннотация: The temporal characteristics of the slow phase of chlorophyll fluorescence induction-T0. 5 (half-decay time) and tmin (an integral-based index of the variable emission rate)-as well as the popular amplitude index FP/FS were determined at different excitation light intensities (Iex [400-500 nm] of 20-80 W/m2) in dark-adapted leaves of different age (3-24 days) taken from radish plants grown under continuous light of 100 W/m2 PAR. All the profiles thus obtained were mutually consistent, and the age-related variations were minimized at Iex > 40 W/m2; at that the age-averaged temporal indices proved to be more light-responsive than the standard amplitude ratio. В© 2012 Pleiades Publishing, Ltd.
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