Search Results - "Kovalenko N. O."

The Dependencies of X-Ray Conductivity and X-Ray Luminescence of ZnSe Crystals on the Excitation Intensity by Pavlova, N. Yu, Kovalenko, N. O., Alizadeh, M., Degoda, V. Ya

“…This work studies the conductivity and luminescence of ZnSe single crystals under X-ray irradiation. The experimentally derived lux-ampere characteristics of…”
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Gene expression of H+-pumps in plasma and vacuolar membranes of corn root cells under the effect of sodium ions and bioactive preparations by Kovalenko, N O, Palladina, T A

“…Four isoforms of H+-ATPase of plasma membrane: MHA1, MHA2, MHA3, MHA4 are expressed in the corn seedling roots with prevalence of genes MHA3 і MHA4. The…”
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Effect of adaptogenic preparations on Na+/H+-antiporter function in plasma membrane of corn root cells under salinity conditions by Kovalenko, N O, Bilyk, Zh I, Palladina, T O

“…Salinity is a hard stress factor for plant organisms which negative effect is caused chiefly by sodium toxic for plants. Plant cells try to remove Na+ from…”
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Effect of the Structure and Acidity of Zeolites on the Synthesis of Solketal from Glycerol and Acetone by Kovalenko, O. N., Simentsova, I. I., Panchenko, V. N., Timofeeva, M. N.

“…A study is performed to establish the main factors that allow regulation of the activity and selectivity of the synthesis of solketal from glycerol and…”
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Acid Activation of Montmorillonite as a Way of Controlling Its Catalytic Behavior in the Synthesis of Solketal from Glycerol and Acetone by Kovalenko, O. N., Simentsova, I. I., Panchenko, V. N., Timofeeva, M. N.

“…The effect of acid activation with 0.125–0.5 M Н 2 SO 4 , HCl, and HNO 3 on the physicochemical properties and catalytic performance of natural clay (the…”
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Aluminium Oxide Catalysts and Supports Synthesized by Thermal Activation Technology by Isupova, L. A., Kovalenko, O. N., Andreeva, A. V., Vedernikov, O. S., Lamberov, A. A., Pimerzin, A. A., Reznichenko, I. D., Tyschenko, V. A., Kleimenov, A. V., Parmon, V. N.

“…A study is performed of the main ways of preparing aluminum oxides; the advantages of products of the thermal activation of hydrargillite (gibbsite) for…”
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Spectroscopic and laser properties of bulk iron doped zinc magnesium selenide Fe:ZnMgSe generating at 4.5 - 5.1 µm by Doroshenko, M E, Osiko, V V, Jelínková, H, Jelínek, M, Šulc, J, Němec, M, Vyhlídal, D, Čech, M, Kovalenko, N O, Gerasimenko, A S

“…The Fe:Zn(1-x)Mg(x)Se (x = 0.19, 0.27, and 0.38) solid solutions spectroscopic properties were investigated and laser oscillations were achieved for the first…”
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2.3- and 4.4-μm Lasing in Cr, Fe:Zn1 –xMnxSe (x = 0.3) Single Crystal Pumped by Q-Switched Er:YLF Laser at 1.73 μm by Říha, A., Doroshenko, M. E., Jelínková, H., Němec, M., Jelínek, M., Šulc, J., Vyhlídal, D., Kovalenko, N. O., Terzin, I. S.

“…Novel Cr 2+ and Fe 2+ co-doped Zn 1– x Mn x Se ( x = 0.3) crystal with Cr 2+ to Fe 2+ ions concentration ratio of about 1 : 2 (both doping ions concentration…”
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Effect of the Porous Structure of a Catalyst on the Rate of Its Deactivation in the Claus Reaction by Khanaev, V. M., Borisova, E. S., Kalinkin, P. N., Kovalenko, O. N.

“…The effect produced by the content of different size pores and the diameter of a catalyst grain on the deactivation rate has been estimated based on the…”
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Effect of micropores on the effective diffusion coefficient by Khanaev, V. M., Borisova, E. S., Kalinkin, P. N., Kovalenko, O. N.

“…The effective diffusion coefficient for catalysts differing in their porous structure has been derived from experimental data on H 2 S conversion in the Claus…”
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Microwave Synthesis of Mgse for Zn1-xMgxse Crystal Growth by Sofronov, D. S., Zagoruiko, Y. A., Kovalenko, N. O., Gerasimenko, A. S., Baumer, V. N., Mateychenko, P. V., Mamalis, A. G., Lavrynenko, S. N.

“…The microwave (MW) synthesis of MgSe in the solid-phase interaction of magnesium and selenium is proposed. The interaction under MW heating starts 120-180…”
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Electrocardiographic predictors of response to cardiac resynchronization therapy of heart failure in patients with dilated cardiomyopathy by Vaĭkhanskaia, T G, Kurushko, T V, Sidorenko, I V, Koptiukh, T M, Gul', L M, Mel'nikova, O P, Golenishcha, V F, Kovalenko, O N

“…The aim of our study was to identify electrocardiographic predictors of response to cardiac resynchronization therapy (CRT) in patients with dilated…”
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Optical and laser characteristics of Сo-doped magnesium-aluminum spinel crystals grown using molybdenum crucible by Nizhankovskyi, S.V., Vovk, O.O., Kozlovskyi, A.A., Sidelnikova, N.S., Siryk, YuV, Kovalenko, N.O., Vorona, I.O., Sofronov, D.S., Skoryk, S.M., Baumer, V.N., Bryleva, K. Yu, Pritula, I.M.

“…Single crystals of Co-doped magnesium-aluminum spinel (MALO:Co) are used for Q-switching of laser radiation at λ = 1.54 μm. Usually, they are grown by the…”
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Fe:ZnMnSe laser active material at 78–300 K: Spectroscopic properties and laser generation at 4.2–5.0 µm by Doroshenko, M.E., Jelínková, H., Osiko, V.V., Jelínek, M., Vyhlídal, D., Šulc, J., Němec, M., Kovalenko, N.O., Gerasimenko, A.S.

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Spectral and lasing characteristics of Fe:Cd1-xMnxTe (x = 01 – 076) crystals in the temperature range 77 to 300 K by Doroshenko, M. E., Osiko, V. V., Jelínková, H., Jelínek, M., Šulc, J., Vyhlídal, D., Kovalenko, N. O., Terzin, I. S.

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Spectroscopic and laser properties of Cr2+ ions in Zn1−xMgxSe solid solutions by Doroshenko, M.E., Osiko, V.V., Jelínková, H., Jelínek, M., Němec, M., Šulc, J., Kovalenko, N.O., Gerasimenko, A.S., Puzikov, V.M.

“…•Novel laser materials generating in the mid-IR 2-3 μm spectral range were investigated.•The materials are based on Cr2+ active ions in ZnMgSe solid…”
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Behavior of some deep oxidation catalysts under extreme conditions. 1. Comparison of resistance to thermal shock and SO2 poisoning by Tsyrulnikov, P.G., Kovalenko, O.N., Gogin, L.L., Starostina, T.G., Noskov, A.S., Kalinkin, A.V., Krukova, G.N., Tsybulya, S.V., Kudrya, E.N., Bubnov, A.V.

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Optical and electro-optical properties of ZnMgSe single crystals by Puzikov, V. M., Zagoruiko, Yu. A., Fedorenko, O. A., Kovalenko, N. O.

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Effect of L-arginine-phosphate doping on structural, optical and strength properties of KDP single crystal by Kostenyukova, E. I.

“…L-arginine-phosphate doped Potassium Dihydrogen Phosphate single crystals with 0.2…4.4 wt.% concentration in the solution was grown on a point seed by the…”
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Mechanical properties of ZnSe : Cr2+ single crystals by Fedorenko, O. A., Zagoruiko, Yu. A., Kovalenko, N. O.

“…The microhardness of single-crystal samples of ZnSe: Cr 2+ with a chromium concentration in the range from 3.3 × 10 17 to 4.0 × 10 19 cm −3 has been studied…”
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