Physics

Interpretaion of Vibrational State for Trinitrophenol Isomers and Conformers

Authors: El’kin P. M., Umansky I. M., Dzhalmukhambetova E. A., Alykova O. M.

On the base of modeling calculations of geometric and electronic structure for trinitrophenol the interpretation of vibrational spectra are propoused.

Rotational Isomeric and Vibrational Spectra of Monomers and Dimers for Acrylic Acid

Authors: El’kin M. D., Erman E. A., Nuralieva D. M.

In frame of method DFT/b3LYP modelling calculation of geometrical structure and vibrational spectra for monomers and dimmers of trans- and cis- isomers of acrylic acid are carried out. The influence of anharmonic resonance effects and intermolecular interection on state and intensities of bands in IR and Raman spectra are researched.

Comparative Analysis of Different Types of Phototherapy in Patients with Lichen Planus

Authors: Slesarenko N. A., Reshetnikova E. M., Reznikova M. A.

Presents clinical-immunological study of 26 patients with lichen planus (LP) (typical manifestations on the skin and mucous membranes). It was found that for the LP characterized by the appearance of the blood of an increased number of lymphocytes with active nuclear chromatin, which testifies to the intensive cellular immune response. Comparative evaluation of clinical effectiveness and impact on the immune response of the two methods of phototherapy (photochemotherapy (PUVA) and narrow-band UVB - therapy (UV-B 311нм)).

Dynamics of the Coupled Nonautonomous Nonlinear Oscillators with Irrational Driving Frequencies Ratio

Authors: Popova E. S., Zakharevich A. M., Seleznev E. P.

In present article the system of the two coupled nonautonomous nonlinear oscillators with irrational driving frequencies ratio is investigated experimentally. The existence regions of the various dynamical types are presented on the external excitation parameter plan. It is shown that in the case of irrational driving frequencies ratio and as result invariance system dynamics due to phases or phase difference of excitation in phase space exist torus, double torus, strange nonchaotic attractor, chaos and hyperchaos only.

Influence of the Co-Phase Harmonis Excitation on the Dynamics of the Two Coupled Period Doubling Systems

Authors: Popova E. S., Seleznev E. P.

The system of two coupled maps under in-phase harmonic forcing is investigated numerically. By calculating of the lyapunov exponent spectrum the structure of control parameters space is investigated, the existence regions of the various multistable states are presented, the structure of the basins of attraction is studed.

Influence of the H-bonding to the Structure and Vibrational Spectrum of 2,3-di-O-nytro-methyl-β-D-glucopyranoside

Authors: Babkov L. M., Ivlieva I. V., Korolevich M. V.

Structural-dynamic models of 2,3-di-O-nytro-methyl-β-D-glucopyranoside and its H-complexes were constructed by density functional method using the functional B3LYP in the basis 6-31G (d). Energies, structures, dipole moments, polarizabilities, frequencies of normal modes in harmonic approximation and IR intensities have been calculated. Interpretation of IR spectrum of the 2,3-di-O-nytromethyl-β-D-glucopyranoside and ethanol complexes is presented in range 600–3700 cm–1.

Hydrogen Bonding and its Influence on the Structure and Vibrational Spectra of Cyclohexanol

Authors: Babkov L. M., Davydova N. A., Moisejkina E. A.

In the range of 600–3600 cm–1 in a wide range of temperatures, in different phase states (plastic phase I, the crystalline phase II and III) IR spectra of cyclohexanol have been measured. Using method of density functional theory (B3LYP) in the basis of 6-31G (d) the structural-dynamic models of conformers of cyclohexanol molecules differing from each other by orientation of hydroxyl group relatively carbonic ring and H-complexes with different structures, which presumably realized in polymorphic modification of cyclohexanol, have been constructed.

Calculation of Thermal Parameters and Technology of Formation MPL Microwave Range

Authors: Afanasyev M. S., Levashov S. A., Mitiagin A. Y., Chucheva G. V., Nabiyev A. E.

The calculation of thermal parameters of super-high frequency microstrip microwave is performed. Calculations showed, that the high thermal conductivity of a diamond enables effective removal of heat from the active zone of microstrip microwave, increasing the output power up to 50 W at 3 GHz frequency without compromising the frequency characteristics of microstrip microwave.

Voltage-capacitance Characteristics of MIS-structures Based on Ferroelectric Films

Authors: Afanasyev M. S., Mitiagin A. Y., Chucheva G. V.

Metal–ferroelectric–semiconductor (MFS) heterostructures are created on n-type and p-type silicon substrates. Electronically-controlled capacitors are realized in MFS heterostructures. Measured parameters of electronically-controlled capacitors at 50 V bias voltage showed, that the stroke of voltage-capacitance characteristics of capacitors on the p-type silicon mirror reflexion of the stroke of voltage-capacitance characteristics of capacitors on the n-type silicon.

Reception of Ultrashort Radio Pulses Propagating in a Dispersion Medium

Authors: Ivanchenko V. A., Kuznetsov V. E., Nikolaev V. V.

Signal spectrum detection algorithm of ultrashort radio pulses sequence propagating in a dispersion medium is developed. Technical implementation of detection device is considered.

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