1. This study deals with the oxidation of organophosphorus amino acid analogues by phenobarbital-induced rabbit liver microsomes. It has been shown that 1-aminoalkylphosphonous and ...1-aminoalkylthiophosphonic acids are converted by P450 to 1-aminoalkylphosphonic acids. 2. Phosphonous analogues of amino acids cause type I spectral changes, and thiophosphonic analogues produce reverse type I changes in different spectra. 3. In the presence of NADPH, the 1-aminoalkylphosphonous acids form the corresponding 1-aminoalkylphosphonic acids by the reaction P-H-->P-OH, as monitored using 1H nmr spectroscopy. 4. Aminoalkylthiophosphonic acids have also proven to be the substrates for the NADPH-dependent monoxygenase system. During the course of oxidative desulphuration 1-aminoalkylphosphonic acids were formed by the reaction P = S-->P = O, as monitored by 31P-nmr spectroscopy. 5. Using resonance Raman (RR) spectroscopy, the interaction of 1-aminoisobutyl-phosphonous acid with P450 was investigated, and characteristic changes in spectral frequencies in the region between 1370 and 1700 cm-1 were demonstrated. These latter changes indicate that substrate binding of organophosphorus compounds leads to alterations in haem conformation and to redistribution of the electron density.
UHF low power rectifier is considered. Influence of nonlinear parts' VAC vs. rectifier parameters is investigated. Conversion efficiency increased 3...10 times by means of resonant tunneling diode ...using. Experimental verification of mathematical model is carried out.
Development of independent electric power supply systems based on micro hydropower plants that use the energy of small waterways involves meeting a variety of controversial requirements. The solution ...shall be quite simple and inexpensive. One of the promising concepts that satisfy the proposed requirements features is a gearless micro hydropower plant, where its axial hydroturbine blade wheel is utilized in conjuntion with an electric arc-type inductor generator.
Active elements are especially interesting for practical application. Active elements creation is unreal without research of nonlinear media properties. For nonlinear media exploration a mathematical ...model is needed. Nano scale physics and electrodynamics is extremely different from even micro scale ones therefore models for bigger wavelength wouldn't be good enough. There are some models for nano scale nonlinear media, for example one could find them in the papers of Mayer for connected nonlinear systems and Maksymov for nonlinear interaction in photon crystal with Kerr nonlinearity. Main disadvantage of their models is low operation speed and that thing, that special materials are needed even for little functionality. This work demonstrates peculiarities of our model for nonlinear media which allows to overcome some drawback of antecedent's works.
Research of multiferroid materials was conducted for the purpose of their possible use in industrial production for radio-electronic information devices 1. It is shown that ordered structures based ...on silica microspheres with embedded magnetic nanoparticles represent one of the most interesting options for implementing multiferroid materials in the form of a 3D lattice of nanoclusters of crystalline multiferroics (iron, manganese and cobalt titanates of the FeTi205, FeTiO3 type), the results of which are presented in the materials of the article 2. The possibility of the existence of a negative real part of the magnetic permeability of such materials under magnetic resonance conditions is not in doubt. Experiments conducted by a group of authors have shown that external fields can significantly change the characteristics of this class of nanomaterials 3-5 and allow them to be used in promising REA developments. Synthesis of multiferroic and multiferroic materials based on previously developed technologies to produce high-quality lattice packings of nanospheres of silica structure of opal SiT2 6, and study of electromagnetic, dielectric, optical, magnetic and other properties of such materials is of great importance due to the prospects of their application, for example, allowed to find out the conditions under which this class of multiferroic media can be used in the creation of an effective electronic information devices that control electromagnetic fields.
The 8.3-GeV resonance in the reaction Upsilon to gamma + zeta is investigated theoretically. The resonance is tentatively identified as a weakly coupled fundamental pseudoscalar A occurring in an ...SU(2) x U(1) gauge-theory model with two spin-0 doublets. The effect of mixing between A and eta(B) is found to ease or avoid cosmological problems encountered in attempting to identify the resonance as a Higgs particle in a minimal weak-interaction model with one scalar doublet.
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