Using the structure extraction method for analyzing data from spectrometric gamma-ray logging

The possibility of using the method of revealing structure (MRS) in the analysis of spectrometric gamma-ray logging data in the problem of lithological dissection of the section is investigated

The iridium double perovskite Sr2YIrO6 revisited: A combined structural and specific heat study

Recently, the iridate double perovskite Sr$_2$YIrO$_6$ has attracted considerable attention due to the report of unexpected magnetism in this Ir$^{5+}$ (5d$^4$) material, in which according to the J$_{eff}$ model, a non-magnetic ground state is expected. However, in recent works on polycrystalline samples of the series Ba$_{2-x}$Sr$_x$YIrO$_6$ no indication of magnetic transitions have been found. We present a structural, magnetic and thermodynamic characterization of Sr$_2$YIrO$_6$ single crystals, with emphasis on the temperature and magnetic field dependence of the specific heat. Here, we demonstrate the clue role of single crystal X-ray diffraction on the structural characterization of the Sr$_2$YIrO$_6$ double perovskite crystals by reporting the detection of a $\sqrt{2}a \times \sqrt{2}a \times 1c$ supercell, where $a$, $b$ and $c$ are the unit cell dimensions of the reported monoclinic subcell. In agreement with the expected non-magnetic ground state of Ir$^{5+}$ (5d$^4$) in Sr$_2$YIrO$_6$, no magnetic transition is observed down to 430~mK. Moreover, our results suggest that the low temperature anomaly observed in the specific heat is not related to the onset of long-range magnetic order. Instead, it is identified as a Schottky anomaly caused by paramagnetic impurities present in the sample, of the order of $n \sim 0.5(2)$ \%. These impurities lead to non-negligible spin correlations, which nonetheless, are not associated with long-range magnetic ordering.Comment: 20 pages, 10 figure

The inversion of correlation between γ-effect values and dihedral angle: nontraditional chairboat conformational equilibrium in seven- and eight-membered dithioacetals

13C NMR γ-anti effect data versus dihedral angle RCXC (X=O, S; R=Me, Ph, t-Bu) in a series of six eight-membered cyclic acetals and dithioacetals are summarized. The inversion of Lambert's correlation, determined for carbocycles, has been derived. X-Ray data for chair and boat forms of eight-membered cyclic dithioacetals is presented and the equilibrium of these structures is discussed. © 1989

2,4-Diorganyl 1,3,2,4-dithiadiphosphetane-2,4-disulfides, their structure and S-silyl dithiophosphonic derivatives

© 2016 Taylor & Francis Group, LLC.Novel 2,4-diorganyl 1,3,2,4-dithiadiphosphetane-2,4-disulfideswere prepared by the reactions of tetraphosphorus decasulfide with butylphenyl ether or 3-brominephenyl-1-isoamyl ether in 1,2-dichlorobenzene. Their structures were established by X-ray single crystal diffraction. Chiral S-trimethylsilyl dithiophosphonates were prepared by the reactions of 2,4-diorganyl 1,3,2,4-dithiadiphosphetane-2,4-disulfides with trimethyl silyl ethers of monoterpenols. Unsaturated S-trimethylsilyl dithiophosphonates were synthesized by the reactions of 2,4-diorganyl 1,3,2,4-dithiadiphosphetane-2,4-disulfides with O-trimethylsilyl ethers of geraniol, nerol, and (R,S)-linalool. S-Esters of dithiophosphonic acids, which possessed antimicrobial activity, were prepared by the reactions of chiral S-trimethylsilyl dithiophosphonateswith orthoformiates, acetals and thioacetals

МЕТАБОЛИЗМ ПЕРИТУМОРОЗНОЙ ЗОНЫ И АЛЬТЕРАЦИЯ NMDAИ AMPA-РЕЦЕПТОРОВ ГЛУТАМАТА В ПАТОГЕНЕЗЕ ГЛИОМ ПОЛУШАРИЙ БОЛЬШОГО МОЗГА

Examined 12 patients with gliomas of the big hemispheres of a brain. Used immunoenzyme method for semiquantitative determination of the level of autoantibodies to NR2A-subunit of NMDA- and GluR1-subunit of AMPA-receptors of glutamate. All patients were performed positron emission tomography of the brain with 2 radiopharmaceuticals: 2-[18F] fluoro-2-deoxy-D-glucose and L-[methyl-11C]-methionine. Features of alteration of NMDA- and AMPA-receptors of a glutamate and sequence of changes of a metabolism in a perifocal zone in gliomas of the cerebral hemispheres are studied. It is shown pre-emptive increase the level of autoantibodies to GluR1- subunit of AMPA-receptors of glutamate in patients with gliomas, current with epileptic syndrome.Метаболизм перитуморозной зоны и альтерация NMDA-и AMPA-рецепторов глутамата в патогенезе глиом полушарий большого мозга Обследованы 12 больных глиомами полушарий большого мозга. Использован иммуноферментный метод полуколичественного определения уровня аутоантител к NR2A субъединице NMDA- и GluR1-субъединице AMPA-рецепторов глютамата. Всем больным была выполнена позитронно-эмиссионная томография головного мозга с 2 радиофармпрепаратами: 2-[18F]Фтор-2-дезокси-D-глюкозой и L-[метил-11С]-метионином. Изучены особенности альтерации NMDA- и AMPA-рецепторов глутамата и последовательность изменений метаболизма в перифокальной зоне глиом полушарий большого мозга. Показано преимущественное повышение уровня аутоантител к GluR1-субъединице AMPA-рецепторов глютамата у больных с глиомами, текущими с эпилептическим синдромом

ОСОБЕННОСТИ ДИНАМИКИ МОТОРНЫХ И ТРЕВОЖНО-ДЕПРЕССИВНЫХ РАССТРОЙСТВ В ВОССТАНОВИТЕЛЬНОМ ПЕРИОДЕ ИНСУЛЬТА

Aim. In the article the estimation of motive and anxiously-depressed disorders is conducted for patients during first-year after the carried stroke.Materials and methods. Rehabilitation measures in the groups of comparison were conducted in different periods of rehabilitation and had different multipleness (1 and 2 courses of rehabilitation).On results research the features of renewal of separate parameters of motive activity (degrees of paresis, myotonus, skill of walking and fine motor skills of brush), anxiously-depressed disorders and quality of life of post-stroke patients are educed.Цель. Оценка двигательных и тревожно-депрессивных расстройств у 107 пациентов в течение первого года после перенесенного инсульта.Материал и методы. Реабилитационные мероприятия в группах сравнения проводились в разные восстановительные периоды и имели различную кратность (один и два курса реабилитации).Результаты. По результатам исследования выявлены особенности восстановления отдельных параметров двигательной активности (степени пареза, мышечного тонуса, навыка ходьбы и мелкой моторики кисти), тревожно-депрессивных расстройств и качества жизни постинсультных больных

The structure of 1-phenyl-3-benzoylamino-4-benzoylpyrazol-2-in-5-one

Crystal and molecular structure of 1-phenyl-3-benzoylamino-4-benzoylpyrazol-2-in-5-one as a product of the benzoylation of 1-phenyl-3-benzoylaminopyrazol-2-in-5-one was characterised by X-ray single crystal diffraction. It is shown that 1-phenyl-3-benzoylamino-4-benzoylpyrazol-2-in-5-one exists in the solid phase in an NH-tautomeric form, which is stabilised by two intramolecular hydrogen bonds and one intermolecular bond with the solvate dioxane molecule, the latter being used as a solvent for recrystallisation. © 2002 Elsevier Science B.V. All rights reserved

Time based radar signal analysis revealing nature and properties of surface scans

To clarify subsurface properties, it is necessary to investigate the time base of the signal. However, it is often necessary to solve the problem of determining the structure of only the surface layer. Our method addresses this problem. Advantages of the method: 1. Highlights homogeneous areas in terms of surface conditions 2. It can process large data on profile measurements in an almost continuous mode, using any one (or a small amount) information signal attribute. 3. There is no need for desk data processing, interpretation. 4. This method uses a signal of any nature. Here we explore if it is possible to obtain more information about the quality and state of the object by not only looking at a single time-based measurement, but instead looking at consecutive measurements as from a stream. By studying the structure of the stream and the changes in it, properties like moisture content can be revealed. A method is proposed for fingerprinting radar signals and detecting the boundaries of homogeneous media during a scan along changing objects properties

Research of physicochemical properties of balm for oral cavity with active peptides

The results of measurements of pH, buffer capacity for acid and base, surface tension, specific conductivity and osmolality of an aqueous solution of oral balm containing peptides are presented. The interrelation of physicochemical parameters of the solution with its antiseptic properties is described.Приведены результаты измерений водородного показателя, буферной емкости по кислоте и по основанию, поверхностного натяжения, удельной электропроводности и осмомоляльности водного раствора бальзама для полости рта, содержащего пептиды. Описана взаимосвязь физико-химических показателей раствора с его антисептическими свойствам