Physics

A History of One «Artefact»

Authors: Zayko Y. N.

A history of the phenomenon of fast oscillations of amplitude and momentary frequency of a signal (pulse) propagating in dispersive media is presented. This history is divided on three periods: first, from its discovery in 60-th of XX Century, second, its oblivion up to the end of XX C., and third – its open discussion from the end of XX C. to present days. A theory of the analytical signal is critically discussed. Some unpublished results are presented.

System’s Analysis of Vibrational Spectra in Dimmers of 5X-Substituted Uracile

Authors: El’kin P. M., Pulin V. F., Berezin V. I.

On based of method DFT/b3LYP for parameters of adiabatic potential for the substituted 5X-uraciles (X = CH3, NH2, F, Cl) the theory of characteristic vibration for monomers and dimmers for the regarded class biomolecules are constructed. The indications of spectral identification for dimmers with strong hydrogen bonds are revealed.

Intensity of Spectral Lines Perturbed Vibrational Transitions States of the Main Absorption Bands Polyatomic Molecules

Authors: Gavva S. P.

Based on the analytic perturbation theory of linear operators using the method of constructing holomorphic functions for transforming the vibrational-rotational Hamiltonian. Built operator function is used to investigate the excited vibrational states and transitions between them. Formulas are obtained for the matrix elements and the absolute intensities of the spectral lines as a function of rotational and vibrational quantum numbers for the main bands of infrared absorption spectra of polyatomic molecules.

Application of Atomic Force Microscopy for Detection of Influence of Antibiotic Upon the Microbial Cell (on the Model of E.coli and I Generation Cephalosporins)

Authors: Yerokhin P. S., Utkin D. V., Kuznetsov O. S., Konnov N. P., Aspen N. A.

Alteration of E.coli cell wall caused by Cefazolin-AKOS was observed atomic force microscopy (AFM). Using semi-contact and contact modes the damaging effect of the Cefazolin-AKOS antibiotic was shown after a 30 minutes exposure. The assessment of physical parameters of cell allow to get more detailed information on the effect of antibiotics on microorganisms.

Investigating Stationary Conditions for Moments of Stochastic Process, Driven by Multiplicative Dichotomous Noise and Featuring Erlang First-order Distribution Function, Conditions Related by Golden Ratio

Authors: Sirotkin O. L.

Conditions for the existence of stationary moments of a stochastic process, satisfying a linear differential stochastic first-order equation, comprising a coefficient, subjected to non-Markov dichotomous noise fluctuations with an arbitrary correlation time, are investigated. It is shown that the existence of stationary moments is related to the golden ratio tying the parameters of the dynamic system and dichotomous noise.

Completeness’ Problem of Being Transmitted Information

Authors: Zayko Y. N.

This article presents an investigation of completeness’ problem of information transmitted by spherical electromagnetic wave from source to receiver. A space–time curvature caused by electromagnetic wave is an origin that influences on completeness. It is shown that that curvature has two parts, gravitational and diffractional ones. Light beam scattering parameters such as scattering angle and capture cross-section due to curvature of space-time are evaluated.

Statistics of Poincare Recurrence with Considering Effect of Fluctuations

Authors: Anishchenko V. S., Astakhov S. V., Boev Y. I., Biryukova N. I., Strelkova G. I.

The basic statistical characteristics of Poincare recurrence are obtained numerically for the logistic map in a chaotic regime. The mean values, variation and recurrence distribution density are calculated and their dependence on a return size is analysed. Afraimovich–Pesin dimension values are obtained. It is verified that the Afraimovich–Pesin dimension corresponds to the Lyapunov exponent. the peculiarities of the influence of noise on the recurrence statistics are studied in local and global approaches.

Photoactivated Disinfection in Treatment of Dental Pathology

Authors: Sitenkov D. E., Izgareva O. A., Kharitonova T. L., Gritsenko E. A.

The results of treatment and prevention in preschool children with inflammatory periodontal diseases. incorporating the lessons of oral hygiene, controlled cleaning of teeth and use of the device «Fotosan». After a preliminary analysis of the oral cavity (OHI-S, PMA), the children of the study were divided into two subgroups, one of which lasted for controlled cleaning of teeth, in the other - combined with the use of photoactivated disinfection. After application of photoactivated disinfection dynamics analysis allowed us to establish the PMA index decreased in preschool children by 92%.

Application of Two-fluid Model for Flow Treating in Pipes of Circle Profile

Authors: Zayko Y. N.

Two-liquid model for description of flows in tubes of circle profile is presented. This model explains well-known experimental fact which consists of growth (approximately in 2 degrees) of critical Reynolds number at which transfer to turbulent regime takes place in comparison with tubes of other profiles. A special characteristic of this model is a set of vortices which separates flow from walls of tube. An electromagnetic analogy with infinitely long solenoid is used for determination of flows’ parameters.

From the Principle of Landauer to the Computer of Landauer

Authors: Zayko Y. N.

In this article questions of the Landauer’s principle application to classical computers are discussed. It is shown that this is connected mainly with the assumption of isothermal condition of switch cells’ (processor’s registers) working. It leads from previous author’s works that this is not true for classical computers. Comparison with data for CISC-processors confirms that processors are working at conditions far from isothermal ones.

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