Справочник "Биофизики России"

Найдено: 69.

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• Krasil’nikov P. M., Paschenko V. Z., Knox P. P., Chamorovsky S. K., Mamedov M. D., Semenov A. J., Zaharova N. I., Ranger G., Rubin A. B. Effect of D₂O and cryosolvents on the redox properties of bacteriochlorophyll dimer and electron transfer processes in Rb. sphaeroides // Bioelectrochemistry. 2001, Vol. 53, No. 2, p. 233-241.
• Li B.-L., Charnov E. L. Diversity-stability relationships revisited: scaling rules for biological communities near equilibrium // Ecol. Modelling, 2001, v. 140, p. 247 - 254.
• Venturino E., Medvinsky A. B. The role of periodic boundary forcing in plankton pattern formation // Ecol. Modelling, 2001, v. 140, p. 255 - 270.
• Hermann A. J., Hinckley S., Megrey B. A., Napp J. M. Applied and theoretical considerations for constructing spatially explicit individual-based models of marine larval fish that include multiple trophic levels // ICES J. Mar. Science, 2001, v. 58, p. 1030 - 1041.
• Megrey B. A., Hinckley S. Effect of turbulence on feeding of larval fishes: a sensitivity analysis using an individual-based model // ICES J. Mar. Science, 2001, v. 58, p. 1015 - 1029.
• Bulychev A. A., Polezhaev A. A., Zykov S. V., Pljusnina T. Yu., Riznichenko G. Yu., Rubin A. B., Janto W., Zykov V. S., Muller S. C. Light-triggered pH Banding Profile in Chara Cells Revealed with a Scanning pH Microprobe and its Relation to Self-Organization Phenomena // J. theor. Biol., 2001, 212, pp. 275-294
  When exposed to light, Characean cells develop a pattern of alternating alkaline and acid bands along the cell length. The bands were identied with a tip-sensitive antimony pH microelectrode positioned near one end of Chara internode at a distance of 50-100 lm from the cell wall. The stage with Chara cell was moved along its longitudinal axis at a computercontrolled speed (100 or 200 microm s^-1) relative to the pH probe over a distance of 50 mm. Under sufficient uniform illumination of the cell (from 100 to 2.5Wm^-2), the homogeneous pH distribution becomes unstable and a banding pattern is formed, the spatial scale of which decreases with the light intensity. If the cell is locally illuminated, bands are formed only in the region of illumination. It is shown that the inhibition of cyclosis by cytochalasin B leads to the disappearance of the banding pattern. The addition of ammonium (weak base) inhibited the banding pattern, whereas acetate (weak acid) alleviated the inhibitory eject of ammonium and restored the pH banding. A model explaining the observed phenomena is formulated in terms of proton concentration outside and bicarbonate concentration inside the cell. It contains two diffusion equations for the corresponding ions with nonlinear boundary conditions determined by ion transport processes across the cell membrane. The model qualitatively explains most of the experimental observations. It describes the dependence of the pattern characteristics on the light intensity and reveals the role of cyclosis in this phenomenon.
• Matorin D. N., Antal T. K., Sharshenova A. A., Tynybekov A. K., Otte M. L., Van de Werf H., Rubin A. B. Monitoring of natural phytoplankton in the Issyk-Kul Lake with the use of a submersible pump-and-probe fluorometer Proc. Int. Conference ‘Human Health and Environment. Strategies and Programmes in New Millenium,’ INTAS, Bishkek, Kyrgyz Republic, May 2001, P. 57- 63
• Robinson B. A., Viswanathan H. S., Valocchi A. J. Efficient numerical techniques for modeling multicomponent ground-water transport based upon simultaneous solution of strongly coupled subsets of chemical components // Adv. Water Res., 2000, v. 23, p. 307 - 324.
• Lobanov A. I., Plyusnina T. Yu., Starozhilova T. K., Riznichenko G. Yu., Rubin A. B. Effects of Electric Field on Spatiotemporal Patterning in the Reaction-Diffusion System // Biophysics. Vol. 45. No.3. 2000. pp. 483-489. Translated from Biofizika; Vol. 45. No.3. 2000. pp. 495-501.
  A model is proposed that describes electrodiffusion in the layer adjacent to the cell membrane. The model takes into account chemical reactions at the membrane, Coulomb interactions between particles, their random motion (diffusion), and the effect of an external electric field. Linear analysis of the model shows a possibility of spatiotemporal patterning in the presence of an applied electric field. The dissipative structures formed in the presence and the absence of the electric field differ in a number of characteristics. First, the former structure drifts. Its slow drift proceeds unidirectionally. While it drifts, the number of its structural elements varies. Second, isolated soliton-like structures may emerge in this system. as the dispersion relation contains not only even, but also odd powers of the wavenumber k. In addition to Turing-type diffusion instability, dispersion instability may arise in the presence of an external electric field, also causing spatiotemporal patterning.
• Riznichenko G. Yu., Lebedeva G. V., Demin O. V., Belyaeva N. E., Rubin A. B. Levels of Regulation of Photosynthetic Processes // Biophysics, 2000, Vol. 45, No.3., pp. 440-448
  Basic mechanisms of kinetic regulation of photosynthetic processes are considered. These mechanisms provide strict light-dependent regulationof electron transport in photosynthetic reaction centers and more flexible regulation at the level of interaction between pboeosystems, transmembrane fluxes of ions, and coupling with dark reactions of the Calvin cycle. A generalized mathematical model was constructed. This model consolidates the modern knowledge about photosynthetic processes in higher plants. The general principlesof multilevel regulation of photosynthetic processes are discussed.
• De Bruin H. A. R., Ronda R. J., Van De Wiel B. J. H. Approximate solutions for the Obukhov length and the surface fluxes in terms of bulk Richardson numbers // Boundary-Layer Meteorol., 2000, v. 95, p. 145 - 157.
• Thingstad T. F., Havskum H., Kaas H., Nielsen T. G., Riemann B., Lefevre D., Williams P. J. le B. Bacteria-protist interactions and organic matter degradation under P-limited conditions: Analysis of an enclosure experiment using a simple model // Limnol. Oceanogr., 1999, v. 44, p. 62 - 79.
• Blinov V. M., Resenchuk S. M., Uvarov D. L., Chirikova G. B., Denisov S. I., Kisselev L. L. INVARIANT SECONDARY STRUCTURE OF LEFT AND RIGHT MONOMERS OF ALU REPEATS IN HUMAN GENOME //Международная школа "Современные проблемы теоретической биофизики". Тезисы. М., 1998.
• Cockburn B., Shu C.-W. The Runge-Kutta discontinuous Galerkin method for conservation laws V. Multidimensional systems // J. Comput.Phys., 1998, v. 141, p. 199 - 244.
• Fedorov B. B., Esipova N. G. DISTRIBUTION OF DIPOLE MOMENTS IN TERTIARY STRUCTURES OF GLOBULAR PROTEINS //Международная школа "Современные проблемы теоретической биофизики". Тезисы. М., 1998.
• Goryacheva E. A., Gorokhov V. V., Korvatovsky B. N., Knox P. P., Paschenko V. Z., Tusov V. B. MECHANISMS OF DYNAMIC INTERACTIONS OF THE COFACTORS WITH WATER-PROTEIN SURROUNDING IN THE RC FROM BACTERIUM Rb.sphaeroides ON PICOSECOND TIME-SCALE //Международная школа "Современные проблемы теоретической биофизики". Тезисы. М., 1998.
• Kendall B. E., Fox G. A. Spatial structure, environmental heterogeneity, and population dynamics: analysis of the coupled logistic map // Theor. Popul. Biol., 1998, v. 54, p. 11 - 37.
• Ananko E. A., Kolpakov F. A., Kolesov G. B., Kolchanov N. A. AUTOMATIC GENERATION OF GENE NETWORKS SCHEMES FROM FORMALIZED DESCRIPTION IN THE GENENET DATABASE //Международная школа "Современные проблемы теоретической биофизики". Тезисы. М., 1998.
• Ananko E. A., Kel A. E., Kel O. V., Ignatieva E. V., Podkolodnaya O. A., Merkulova T. I., Merkulov I. L., Stepanenko V. M., Busygina T. V., Kozlova O. N., Kochetov A. V., Kolpakov F. A., Kolesov G. B., Lavryushev S. V., Grigorovich D. A., Podkolodny N. L., Frolov A. S. TRANSCRIPTION REGULATORY REGIONS DATABASE (TRRD) AS A GLOBAL INFORMATION SYSTEM ON TRANSCRIPTION REGULATION OF EUKARYOTIC GENES //Международная школа "Современные проблемы теоретической биофизики". Тезисы. М., 1998.
• Lazareva B., Haussler D. CONSENSUS SAMPLER FOR MULTIPLE DNA ALIGNMENT //Международная школа "Современные проблемы теоретической биофизики". Тезисы. М., 1998.

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