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Your search keyword '"A. S. Khramov"' showing total 8 results
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8 results on '"A. S. Khramov"'

1. DQE and eDQE of the KARS-BKS2 Digital Slot Scan X-Ray System

Author

V. A. Labusov, A. V. Bekhterev, R. V. Kotkov, M. S. Khramov, I. I. Strokov, R. A. Lokhtin, and D. A. P’yanov

Subjects
Physics, Focal point, Null (radio), business.industry, Radiation quality, Biomedical Engineering, X-ray, Medicine (miscellaneous), Radiation, Detective quantum efficiency, Medical Laboratory Technology, Optics, Spatial frequency, business
Abstract

DQE and eDQE were evaluated for a slot scan X-ray system using four standard radiation qualities: RQA3, RQA5, RQA7, and RQA9. The results showed that the system under consideration, KARS-BKS2 fluorograph, provided maximal DQE(u,v) and eDQE(u′,v′) in the case of radiation quality RQA5 and a small focal point. At null spatial frequencies DQE(0) was greater than 40% and eDQE(0) was 35%.

Published
2021
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2. Glucokinase Activators Based on N-Aryl-N′-Pyridin-2-Ylurea Derivatives

Author

S. S. Vakaeva, V. I. Inchina, Irina V. Tarasova, Elena V. Semenova, V. S. Khramov, and Alexander V. Semenov

Subjects
Pharmacology, 010404 medicinal & biomolecular chemistry, chemistry.chemical_compound, chemistry, 010405 organic chemistry, Glucokinase, Stereochemistry, Aryl, Drug Discovery, Pharmacology toxicology, 01 natural sciences, In vitro, 0104 chemical sciences
Abstract

A series of previously undescribed N-aryl-N′-pyridin-2-ylureas were prepared via the reaction of 2-aminopyridines with benzoyl azides and tested in vitro as activators of glucokinase. Statistically significant reductions of glucose levels as compared with controls were demonstrated for several compounds.

Published
2018
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3. Synthetic analogs of active centers of iron-sulfur proteins: Reactions with phosphates

Author

A. V. Il'yasov, V. E. Bel'skii, K. M. Enikeev, S. V. Baires, B. E. Ivanov, A. S. Khramov, and D. É. Vallen

Subjects
chemistry.chemical_compound, chemistry, Iron-sulfur protein, biology, Ligand, Kinetic equations, Diphenyl phosphate, Automotive Engineering, biology.protein, Organic chemistry, General Chemistry, Phosphate, Ferredoxin
Abstract

The interaction of synthetic analogs of active centers of iron-sulfur proteins with phosphates of different structures was studied. It was shown that the process involves ligand exchange and obeys the first-order reaction kinetic equation. The most rapid exchange occurred with the most acidic compound diphenyl phosphate.

Published
1992
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8. Effect of ligand size on size of quadrupole splitting of NQR spectra of complexes of S-alkyl esters of thio- and dithiophosphorous acid with tin tetrahalides

Author

R. A. Manapov, A. A. Muratova, I. A. Safin, A. S. Khramov, I. Ya. Kuramshin, and Sh. Sh. Bashkirov

Subjects
chemistry.chemical_classification, Solid-state physics, Ligand, Inorganic chemistry, chemistry.chemical_element, Thio, Quadrupole splitting, Spectral line, Inorganic Chemistry, chemistry, Materials Chemistry, Physical chemistry, Physical and Theoretical Chemistry, Tin, Alkyl
Published
1974
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