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1.
The synthetic samples of nickel olivine were measured in the temperature range 100–630 K by the X-ray powder diffraction method. Temperature dependencies of molar volumes and coefficients of bulk thermal expansion of liebenbergite were determined. Interpolation and extrapolation of the experimental data were performed by the procedure based on the Debye–Mie–Gruneisen theory of solid body in the range from 50 to 2000 K, and the Gruneisen coefficient and Debye temperature were calculated. Heat capacity and its behavior in accordance with temperature were evaluated.
相似文献2.
3.
Yuliya Terentyeva Ye. Yu. Stepanenko A. M. Rashevska P. Yu. Koval 《Molecular Crystals and Liquid Crystals》2020,698(1):65-77
AbstractThe results of an experimental study of luminescence of an aqueous solution of adenosine triphosphate (ATP) at room temperature are presented. High-temperature fluorescence of low- and high-concentrated solution was experimentally detected and analyzed. The shape of the fluorescence spectrum, the excited state lifetime and the temperature behavior of the emission intensity indicate the formation in the high-concentrated solution of rather stable dimer-like complexes, which can form excimer states. 相似文献
4.
Ivanov Yu. F. Koval N. N. Akhmadeev Yu. H. Uglov V. V. Shugurov V. V. Petrikova E. A. Krysina O. V. Prokopenko N. A. Azhazha I. I. 《Russian Physics Journal》2022,64(12):2207-2213
Russian Physics Journal - The method for deposition of high entropy alloy (HEA) films is discussed. It consists in the film deposition on a substrate in vacuum from multi-component gas-metal plasma... 相似文献
5.
Evgeniya V. Polyakova Olga V. Shuvaeva Olga S. Koshcheeva Yuliya E. Tyutereva Ivan P. Pozdnyakov 《Electrophoresis》2021,42(6):719-724
Arsenic aromatic compounds including p-arsanylic acid (pASA) are still widely used in a number of countries as the feed additives in animal breeding resulting in its entering the environment. Under the influence of oxidizing agents or UV radiation, pASA undergoes transformations leading to generation of inorganic arsenic species that are more mobile and toxic than organic ones. On the one hand, an approach based on the treatment of contaminated waters by UV irradiation seems perspective for their detoxification, but the feasibility of this approach depends on the composition of the products forming as a result of photodegradation. In the present work, a CZE was applied for the study of the pASA degradation process during stationary (308 nm) photolysis in the presence of Fe(III)-oxalate complex. A developed assay allowed controlling the parent compounds and also As-containing products of pASA degradation, presented mainly by arsenate and arsenite ions. It was found that the main inorganic derivatives of the pASA photolytic conversions are presented by arsenate and arsenite ions whose ratio depends on the initial amount of pASA and reaction conditions. 相似文献
6.
Azatyan V. V. Alymov M. I. Prokopenko V. M. Abramov S. K. Kazanskii V. B. 《Kinetics and Catalysis》2022,63(4):412-417
Kinetics and Catalysis - The kinetic characteristics of propagating flame were shown to depend on the chemical properties of the contacting solid surface and on the rates of heterogeneous... 相似文献
7.
A technique is developed to determine the critical stresses and natural frequencies of shallow ribbed shells with a rectangular planform and the corresponding buckling wave and natural modes. The effect of discrete rib arrangement on these characteristics is studied by numerical examples. 相似文献
8.
A technique is proposed to determine the natural frequencies of rib-reinforced cylindrical shells with low shear stiffness. The equations of motion based on the Timoshenko model are used. The influence of the transverse shear moduli of the shell and ribs on the minimum natural frequencies and corresponding modes is studied by way of numerical examples. It is shown that the effect of the discrete ribs is different from that predicted by the classical theory of ribbed shells__________Translated from Prikladnaya Mekhanika, Vol. 41, No. 4, pp. 66–74, April 2005. 相似文献
9.
Gimranov Dmitriy R. Abdullina Aisylu F. Sevast’yanova Ekaterina V. Petrova Yuliya Yu. 《平面色谱法杂志一现代薄层色谱法》2015,28(5):343-351
JPC – Journal of Planar Chromatography – Modern TLC - The thin-layer chromatography (TLC) procedures of metal cations, modified with amines and cationic surfactant micelles, followed by... 相似文献
10.
Irina Balakhnina Nikolay Brandt Andrey Chikishev Natalia Rebrikova Yuliya Yurchuk 《Applied Physics A: Materials Science & Processing》2014,117(4):1865-1871
Old paper samples are bleached using pulsed laser radiation with a wavelength of 532 nm. The ablation products of five paper samples that differ by composition and production dates are studied using Raman microspectroscopy. Cellulose, protein, calcite, titanium dioxide (anatase, rutile, and brookite), quartz, lazurite, bonattite, and dolomite are identified as ablation products. 相似文献