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Ballistic Auto-Correlation Interferometry

Authors: Vacas-Jacque P., Ryabukho V. P., Strojnik M., Tuchin V. V., Paez G.

We propose the implementation of a ballistic auto-correlation interferometer (BAI) for the assessment of biological tissues. We develop the theory of the interferometric technique, and demonstrate that a method to isolate ballistic from forward-scattered contributions is of central importance. We, therefore, propose theoretically and experimentally a non-linear grating-based angular filter. A monochromatic source incident on a ruled grating, positioned at grazing diffraction, is followed by a narrow slit to conform the proposed system.

IR Spectrum of the Methyl-β-D-Glucopyranoside and its Interpretation on Basis Structural-Dynamic Model Construction

Authors: Babkov L. M., Korolevich M. V., Moisejkina E. A.

Structural-dynamic models of the methyl-β-D-glucopyranoside molecule are constructed by density functional method in bases 6-31 G(d), 6-31+G (d, p). Energies, structures, dipole moments, polarizabilities, frequencies of normal modes in harmonic approximation and IR intensities have been calculated. Interpretation of IR absorption spectrum is presented in range 400-3700 cm^(-1). Advantages of model, which was constructed, compared with model, which bases on using valence-force field method and valency-optical theory, are discussed.

The Vibrationai Spectra of 2-Biphenylmethanol and their Interpretation by Using of Molecul Structural-Dynamical Model Taking into Account Mechanical Anharmonicity

Authors: Babkov L. M., Uspenskiy K. E., Davydova N. A.

Using hybrid density functional (B3LYP/6-31 (d)) the calculation of the geometry, electro-optical parameters, quartic force field and vibrational spectra of the 2-biphenylmethanol molecule were performed. The vibrational analysis was implemented and the full interpretation of its IR (400-3800 cm^(-1)) and Raman (50-3600 cm^(-1)) spectra was given.

Structure-Dinamic Modeles of Cyclopropane and Cyclopentene

Authors: El’kin M. D., Dzhalmukhambetova E. A.

Fashionable calculations of geometric and vibrational spectra of cyciopentane and cyclopentene are carried out. Nonplanar conformation for five-member cycle of molecule is cofirmed.

Cryptography from the Physicist's Point of View

Authors: Zayko Y. N.

The results of treating of crypto algorithms such as DES (USA) and GOST 28147-89 (Russia) with the help of nonlinear dynamics methods are presented. Point maps which are generated by the blocks of substitutions (S-blocks) are investigated. The phenomenon of return is demonstrated. The ergodicity of these maps are treated. An estimation of quality of S-block could be made by maps of first return. The results of statistical treating of S-biocks are presented.

About Conditionality of Nonlinear Responce of Miogenic Response of Afferent Arteriola for Irregular Self-Sustained Oscillations of Nephron Proximal Pressure

Authors: Pavlova O. N., Postnov D. E.

By means of nonlinear dynamics and time series analysis we investigate the possible mechanisms for the onset of chaotic selfsustained dynamics in nephron tubular pressure that is observed experimentally. Our results suggests that the miogenic constriction mechanism of afferent arteriola plays the key role providing the nonlinear response on temporal variation of filtration rate.

Identification of Action Potentials of Small Neuron Ensembles Using Wavelet-Analysis and Neural Networks Method

Authors: Tupitsyn A. N., Nazlmov A. I., Alexyi A. N.

A possibility to solve the problem of automatic identification of neuronal spikes in the extracellularly recorded electrical potentials is discussed that is based on a combined approach assuming application of neural networks and the discrete wavelet-transform. Efficiency of the combined approach is illustrated in the analysis of experimental data.

On Conservation Lows for Energy and Momentum in Electromagnetic Field in Media and Under Plane Wave Diffraction on Conducting Plate

Authors: Davidovich M. V.

The general nonstationary balance equations for energy and momentum densities of field-matter system based on rigorous nonstationary approach for their definitions with dependence from the field creation prehistory have been obtained. Also the transport velocities of these densities have been derived. The concrete examination and detailed consideration have been performed for simplest dispersion low which is defined by the conductivity connected with the dissipation.

The Resonant Mechanism of Excitation Exchange Spin Waves in Layered Monolithic Ferrite-Ferrite Structures

Authors: Tikhonov V. V.

It is found out high (up to 80% and more) efficiency of pulse transformation of exchange spin waves (ESW) and a sound in implanted YIG films. Impulses ESW extended deep into YIG film and were reflected from its opposite surface. Resonant effects colinear and noncolinear transformations ESW are investigated. It is shown, that these effects have long character that allows to reach high efficiency of transformation of energy of fast and slow types of waves even at weak intensity of radiation ESW.

Signal Propagation in Nerve Fiber

Authors: Zayko Y. N.

In this article a problem of signal propagation in nerve fiber is considered. Ohm’s losses and heat processes are taken into account. These permit to join two stages (metabolic and non-metabolic) of propagation and Na+ and K+ ions transmission through cell membrane connected with propagation. Electrodynamics of nerve fiber is described by telegraph equations with losses. Heat processes in fiber are described by an equation of entropy transfer. Ion motion at metabolic stage against the electro-chemical potential is described by negative conductance, responsible for the escape flow.

Complex Waveforms and Synchronization in Functional Model of Vascular Nephron Tree

Authors: Scherbakov P. A., Astakhov O. V., Postnov D. E.

We suggest functional model that qualitatively describes oscillatory processes in renal autoregulation. Our model consists of ensemble of two-mode oscillators that are coupled by means of two different pathways. The above coupling pathways count both the geometry of ensemble (tree-like structure or local interaction) and the specific action of individual oscillator (energy distribution netrwork or diffusive coupling). We study the typical operating regimes of suggested model as well as transitions between them.

Modeling of Structure and Vibration Spectra for Oxygen Substituted Compounds. 1. Spirits

Authors: El’kin P. M., Shalnova T. A., Grechuhina O. N.

The article describes the methods of accounting of anharmonic resonancies in structural dynamic models oxygen substituted compounds on the example of methanole.

Disclosure of Objects in Multilayared Media by Waveguide Probe

Authors: Davidovich M. V.

The coupled (combined) volume-surface integral equations for waveguide probe terminated into multilayered medium with magnetodielectric or metallic body have been considered and derived. The inverse problem of body disclosure has been formulated and the possibility of cancer detection in the biological tissue has been theoretically investigated and validated using the scanning of probe.

Digital Optical Holography with Virtual Reference Wave

Authors: Ryabukho V. P., Gorbatenko B. B., Maksimova L. A.

Possibility of scattering object image reconstruction bis digital Fourier – specklegram (intensity distribution of scattered field in far area of diffraction, without use of coherent referent wave) is considered. Action of referent wave ~ formation of hologram structure with system of carrying interference fringes, is realized a posteriori at the stage of numerical processing of digital specklegram with using of representation about binary distribution of objective field phase in various speckles.

The Display of Intermolecular Interaction in Uracil Dimmers

Authors: El’kin M. D., Dzhalmukhambetova E. A., Grechuhina O. N.

The model calculations of possible uracil dimmers vibration spectra by density functional method done. The intermolecular interaction mechanism have been by using ab initio quantum calculations of geometrical parameters and adiabatic potentials proposed.

Influence of Time-delay in the Coupling Channel on the Complete Synchronization of Chaos

Authors: Astakhov V. V., Astakhov S. V., Nekhodtseva E. I., Shabunin A. V.

In the current work the influence of delay in a coupling channel on the synchronization of regular and chotic oscillations in discrete maps and continuous time systems is studied. It is established that introduction of time delay in a discrete system prevents synchronization of chaos but allows synchronization of periodic and quasiperiodic oscillations. In a continuous time system with chaotic attractor the introduction of a small delay doesn’t make essential changes in its dynamics however the increasing of delay leads to the reverse period doubling cascade.

The Sine–Gordon Brizer Stochastic Dissoziation in an External Fields

Authors: Lavkin A. G., Mysenko M. B., Antonov I. N.

It is investigated, the Sine–Gordon brizer stochastic dissoziation in the external fields by the maximal Lyapunov parameters method in adiabatic approach. Dependence between the Sine-Gordon brizer dissoziation speed and the maximal Lyapunov parameters values is established.

It is discussed also, the efficiency of the various numerical methods of research of the determined chaos of dynamic systems.

The Irregular Dynamics of the Yang–Mills Fields in Thermostat

Authors: Lavkin A. G., Mysenko M. B., Antonov I. N.

Dynamics of the homogeneous SU (2) Yang–Mills fields in thermostats and at their stochastic quantization are investigated by the Langeven`s sources method.

It is shown, that with growth of temperature the phase transition confinement-deconfinement in chromodynamics takes place, and quantization of the Yang–Mills fields results in increase of radius of correlation (confinement) colors.

The Reseach of Corrections to the Fine Shift of Energy Levels in the Hydrogen-Like Atoms

Authors: Boikova O. A., Baykova N. A., Kleshchevskaya S. V., Tyuhtyaev Y. N.

The method of calculation of the value the thin shifts of energy levels of bound states on a basis relativistic upgraded quasipotential equation is considered. The appropriate perturbation theory permitting to calculate shifts of the energy levels in hydrogen-like atoms with a high accuracy is advanced. We obtained logarithmic corrections about α^6 lnα^(−1) by one photon interaction are obtained, and earlier conventional result is confirmed.

Absorption as an Indication of Vacuum e+–e– Pair Creation in a Strong Nonstationary Electric Field

Authors: Blaschke D. B., Ilyine S. V., Röpke G., Smolyansky S. A.

We discuss the high frequency conductivity and absorption coefficient of an electron – positron plasma (EPP) created from the vacuum in a strong nonstationary electric field (nonstationary Schwinger mechanism). It is shown that the basic contribution here is due to vacuum polarization effects. For subcritical linearly polarised fields, we obtain the general expression for the induced conductivity and the absorption coefficient, which is investigated in a wide range of frequencies from the optical to the γ-ray region.

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