Search Results - "Rakhmatullin, R. R."

EPR study of nanocrystalline CeO2 exhibiting ferromagnetism at room temperature by Rakhmatullin, R. M., Pavlov, V. V., Semashko, V. V.

“…Electron paramagnetic resonance (EPR) spectroscopy complemented with X‐ray diffraction, X‐ray fluorescence, and optical spectroscopy was used to study…”
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Study of the effect of hull geometry on the towing resistance of motor ferries when overcoming water obstacles by Mesropyan, A. V., Rakhmatullin, R. R.

“…Objective . The article studies the influence of the hull geometry on the towing resistance and speed of ferry vehicles on the water when overcoming water…”
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Detection of quasi-periodic processes in repeated measurements: New approach for the fitting and clusterization of different data by Nigmatullin, R., Rakhmatullin, R.

“…•New algorithm for detection of the quasi-periodic processes (QP) is suggested.•The physical meaning of the generalized Prony’s decomposition is found.•The…”
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Modeling working processes of the marine thruster of the PMM-2M ferry-bridge machine by Mesropyan, A. V., Platonov, E. A., Rakhmatullin, R. R.

“…Objective . The article deals with aspects of modeling the working processes occurring in marine thrusters of amphibious vehicles, taking into account the…”
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Room temperature ferromagnetic‐like response in “bulk” Y‐doped CeO2 by Rakhmatullin, R. M., Sen, S.

“…Strong ferromagnetic‐like response is observed at room temperature in “bulk”‐ and nano‐crystalline Y‐doped CeO2. The saturation magnetization for “bulk” (∼600…”
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Magnetic properties of doped CaF2 powders by Rakhmatullin, R.M., Semashko, V.V., Lovchev, A.V., Rodionov, A.A., Gilmutdinov, I.F., Kiiamov, A.G.

“…Room-temperature “ferromagnetism” found last decades in nonmagnetic nanoparticles is a puzzle that is not solved yet. In this work we report about the…”
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Synthesis and Antitumour Activity of Hybrid Compounds Based on 4-Aminophenylarsonic Acid and Spatially Hindered Phenols by Bukharov, S V, Rakhmatullin, R R, Zamaletdinova, D M, Bogdanov, A V, Voloshina, A D

“…One of the main modern approaches to the creation of effective drugs is the design of new biologically active substances containing two or more pharmacophore…”
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Biologically Active Symmetric and Asymmetric Dicationic Bis(isatin hydrazones): What is Better―To Complicate or Simplify the Spacer? by Bogdanov, A. V., Voloshina, A. D., Amerkhanova, S. K., Tsivileva, O. M., Rakhmatullin, R. R., Mironov, V. F.

“…The reaction of bisisatins containing a 1,ω-alkylene, -arylene, or -alkyluracil spacer with ammonium acetohydrazides gave a series of symmetric and asymmetric…”
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Synthesis and Antitumor Activity of Hybrid Compounds Based on Aryl-Substituted Isatins and 2-Chloroethynyl (4-(Dimetylamino)phenyl)(2-hydrazinyl-2-oxoethyl)phosphinate by Bogdanov, A. V., Ivanova, A. A., Voloshina, A. D., Rakhmatullin, R. R., Samorodov, A. V., Valiullina, Z. A., Krylova, I. D., Bukharov, S. V.

“…New phosphorus-containing isatin-3-hydrazones were synthesized by the condensation reaction of 5-substituted isatins with 2-chloroethyl…”
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Relationship Between the Volume of Benzyl Substituent in Isatin-3-acylhydrazones and Their Antimicrobial Activity by Bogdanov, A. V., Voloshina, A. D., Khamatgalimov, A. R., Rakhmatullin, R. R., Samorodov, A. V., Valiullina, Z. A., Mironov, V. F.

“…Water-soluble ammonium salts were prepared by the reaction of new sterically hindered isatin derivatives with analogues of Girard's reagents. The resulting…”
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Development of a Method for Predicting the Quality of Petroleum Coke by Rakhmatullin, I. R., Sidenev, D. M., Akhmetov, A. F., Gaysina, A. R.

“…The development of algorithms that ensure manufacture of products of the required quality under minimal involvement of maintenance personnel is a relevant task…”
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EPR, optical, and dielectric spectroscopy of Er-doped cerium dioxide nanoparticles by Rakhmatullin, R. M., Kurkin, I. N., Pavlov, V. V., Semashko, V. V.

“…authoren authoren The cerium dioxide nanoparticles doped at low level with Er ions and with grain sizes of about 22 and 300 nm were comprehensively studied…”
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Calculations for Coking Chamber Designs with Various Feedstock Charging Methods by Rakhmatullin, I. R., Sokolova, V. V.

“…The efficiency of various designs of devices for charging feedstock into coking chambers of delayed coking plants is analyzed by hydrodynamic and thermal…”
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Degradation of Spacecraft’s Temperature-Control Coatings during Deposition of Thin Au Films by Nadiradze, A. B., Panasova, G.V., Rakhmatullin, R. R., Smirnov, V. A.

“…Degradation of temperature-control coatings (TCC) of “solar reflector” type caused by deposition of Au thin films was studied. “Mirror” OSO-S type coating and…”
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A Method for Express Analysis of Mechanical, Erosion, and Contaminating Impact of Plasma Jet of Electric Propulsion Thruster onto the Large Object of Space Debris by Blyakharskii, S. S., Blyakharskii, Ya. S., Nadiradze, A. B., Rakhmatullin, R. R.

“…A method for express analysis of mechanical, erosion and contaminating impact of plasma jet of an electric propulsion thruster onto the large object of space…”
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EPR evidence of surface paramagnetic defects formation due to annealing of LaF3 nanoparticles by Rakhmatullin, R.M., Pudovkin, M.S., Semashko, V.V.

“…An EPR technique and optical measurements have been applied to study LaF3 nanoparticles doped with 7% of Pr3+ ions. It has been found that vacuum annealing of…”
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The role of trimethylamine-N-oxide in the development of cerebrovascular disease (brief review) by Kutlubaev, M. A., Rakhmatullin, A. R., Kutlubaeva, R. F.

“…Trimethylamine-N-oxide (TMO) is one of the best studied metabolites of the gut microbiota. It increases the risk of stroke and dyscirculatory encephalopathy,…”
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Post-COVID Syndrome in Children: One-Time Survey Study of Parents’ Opinion by Shagieva, Dilara R., Kutlubaev, Mansur A., Rakhmatullin, Airat R.

“…Background. COVID-19 symptoms often persist for a long time, it indicates the post-COVID syndrome development. Its frequency in children population is…”
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Predictors of In-Hospital Mortality Among Patients with COVID-19 Related Stroke by Rakhmatullin, Airat R., Kutlubaev, Mansur A., Khayrullin, Amir T.

“…Introduction. COVID-19-related stroke is associated with a significantly higher mortality than COVID-19 or stroke alone. Mechanisms underlying the increased…”
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EPR Evidence of Unusual Dopant Valency States in Nanocrystalline Er-doped CeO2 by Rakhmatullin, R. M., Aminov, L. K., Kurkin, I. N., Pöppl, A.

“…The structure and oxidation state of the Er dopant cation in CeO 2 single crystal and nanocrystals with size ranging from 22 to 300 nm are studied using…”
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