Showing papers by "Armenian National Academy of Sciences published in 1975"
27 citations
TL;DR: In this paper, the high-temperature oxidation of formaldehyde in the presence of carbon monoxide was investigated to determine the rate constant of the reaction HO2 + CO CO CO2 + OH (10).
Abstract: The high-temperature oxidation of formaldehyde in the presence of carbon monoxide was investigated to determine the rate constant of the reaction HO2 + CO CO2 + OH (10). In the temperature range of 878–952°K from the initial parts of the kinetic curves of the HO2 radicals and CO2 accumulation at small extents of the reaction, when the quantity of the reacted formaldehyde does not exceed 10%, it was determined that the rate constant k10 is
A computer program was used to solve the system of differential equations which correspond to the high-temperature oxidation of formaldehyde in the presence of carbon monoxide. The computation confirmed the experimental results. Also discussed are existing experimental data related to the reaction of HO2 with CO.
23 citations
TL;DR: In this paper, the coupled optical-phonon-plasmon surface waves in a uniaxial polar semiconductor slab are investigated and a number of new surface modes are found which do not occur in cubic materials.
Abstract: The coupled optical-phonon–plasmon surface waves in a uniaxial polar semiconductor slab are investigated. A number of new surface modes are found which do not occur in cubic materials. Some properties of surface magnetoplasmons due to finite size are investigated.
[Russian Text Ignored]
10 citations
TL;DR: Study of the pH dependence of the changes occurring in the circular dichroism and absorption spectra has shown that in the modified proteins, the pyridoxyl phosphate chromophore is rather sensitive to the ionic state of the surrounding medium and serves as a "reporter" group when the relationship between structure and function of the RNAase A active site is being investigated.
7 citations
TL;DR: In the autoxidation of cytochrome c in phosphate buffer as well as in the presence of cardiolipin and Tween-20 superoxide dismutase did not inhibit oxidative processes.
6 citations
TL;DR: Optically transparent garnet single crystals were grown from Lu3Al5O12 melts containing different RE3+ ions and the distribution coefficient of Nd3+ ion was found to be a function of the growth rate Lu2O3-Al 2O3 system studies have been partially carried out Measurements of the lattice data, absorption spectra and comparison with some properties of Y3Al 5O12 single crystals have also been made.
Abstract: Optically transparent garnet single crystals were grown from Lu3Al5O12 melts containing different RE3+ ions The distribution coefficient of Nd3+ ions is found to be a function of the growth rate Lu2O3–Al2O3 system studies have been partially carried out Measurements of the lattice data, absorption spectra and comparison with some properties of Y3Al5O12 single crystals have also been made
Optisch durchsichtige Einkristalle von Granat wurden aus verschiedenen, SE3+-Ionen enthaltenden Lu3Al5O12-Schmelzen gewonnen Der Verteilungskoeffizient der Nd3+-Ionen ist eine Funktion der Geschwindigkeit des Wachstums Die Untersuchungen wurden am System Lu2O3–Al2O3 durchgefuhrt Gitterparameter, Absorptionsspektren wurden bestimmt und ein Vergleich der Eigenschaften einiger Y3Al5O12-Einkristalle vorgenommen
5 citations
5 citations
01 Sep 1975
TL;DR: An approach to the treatment of solvability and unsolvability notions for mass problems defined on finite sets and a formal scale of solver notions for such mass problems will be proposed.
Abstract: We shall describe an approach to the treatment of solvability and unsolvability notions for mass problems defined on finite sets. A formal scale of solvability notions for such mass problems will be proposed. The general approach follows some concepts of J. yon Neumann [fl], A.N.Kolmogorov [2], A.A.Markov [3], S.V. Jablonskir [4], O.B.Lupanov [5]; it is similar to the concepts of A.I~eyer [6] and A.Ehrenfeucht [7] and continues the concepts described in I~8] and [9] ( in square brackets we shall write the numbers of references and in parentheses the numbers of levels of solvability).
2 citations
1 citations
1 citations
TL;DR: In this paper, a formula was proposed for the determination of the rate constant of quadratic destruction of peroxide radicals in polystyrene in the interval from 10 to −75°.
Abstract: 1.
The kinetics of the photoinduced formation and destruction of peroxide radicals {RO2.} of polystyrene in the liquid phase was studied by the ESR method.
2.
A formula was proposed for the determination of the rate constant of quadratic destruction of RO2. in the interval from 10 to −75°.
3.
The kinetic principles of the accumulation of {RO2.} were explained considering cross recombination of peroxide and alkyl radicals; the ratio of the rate constants of reactions of the type of R. + O2 and R. + RO2. was estimated according to the experimental data.
TL;DR: The role of phospholipids in the formation of the various factors of the clotting and anticlotting systems of the blood is discussed.
Abstract: As reflected in the content of total phospholipids (neutral and acid) and the degree of change in thromboplastic activity (TA) as a result of incubation of brain tissue homogenates from normal animals and from animals treated with adrenalin, the brain regions studied can be arranged in the following order: medulla > cerebellum > cerebral cortex. The effects of adrenalin are characterized by a decrease in TA, i.e., by changes opposite to those observed in TA under normal conditions. The role of phospholipids in the formation of the various factors of the clotting and anticlotting systems of the blood is discussed.