Bit for the core drilling of nonmetals

© 2015, Allerton Press, Inc. The design of tools for core drilling is considered, along with their applicability. The deficiencies of existing designs when machining composites and wood are analyzed, including flaking and scratching on the machined surface. A tool design with group teeth is proposed. This design effectively cuts fibers and permits chip removal. A benefit of the new tool design is improved quality of the machined surface

Administrative offenses cases number assessment in the Russian regions

Reducing crime is an important objective in the Russian Federation, therefore monitoring the dynamics of offending is relevant and of research interest nowadays. The aim of the article is to analyse the number of administrative offenses cases initiated by officials in the regions of the Russian Federation, as well as the changes that have occurred in the period between 2006 and 2019. In order to obtain a stable classification, all regions of Russia were ranked according to the arithmetic average number of administrative offenses cases for the period indicated. The paper implemented the cluster analysis method to identify typical, similar regions in terms of administrative offenses. The clusters and atypical regions composition according to the number of  administrative offenses cases in the Russian Federation for the analysed period was formed. The deviations of the clusters and regions values from the average Russian level were calculated

THE APPROBATION OF JOINT ANALYSIS OF IMAGES (JPD-METHOD) TO STUDY THE MICRO-INHOMOGENEOUS MATERIALS

The study is devoted to approbation of the quantitative joint images analysis (JPD) for studying the micro-inhomogeneous minerals (zircon, diamond) and materials (active optical fibers, heterostructures) in order to deeper understand features of the texture, physical and chemical properties.Работа выполнена в ЦКП УрО РАН «Геоаналитик» при финансовой поддержке гранта РНФ № №19-77-00074. Авторы благодарны Киселеву П.Г. за обсуждение и реализацию JPD-метода в программном коде

Synthesis of new lipophilic phosphine oxide derivatives of natural amino acids and their membrane transport properties toward carboxylic acids

© 2015 Pleiades Publishing, Ltd. One-pot procedures were developed for the synthesis of lipophilic N-(dialkylphosphorylmethyl) derivatives of natural amino acids with high yields from dioctyl- or didecylphosphine oxide, formaldehyde, and amino acid in the presence of amino acid hydrochloride. The reactions with some amino acids were also effective under catalysis by crown ether. The structure of the isolated N-(dialkylphosphorylmethyl) and N,N-bis(dialkylphosphorylmethyl)amino acids was determined on the basis of 1H, 13C, and 31P NMR and mass spectra; the structure of (S)-N-[(dicyclohexylphosphoryl)methyl]-α-alanine was proved by X-ray analysis, and intermolecular association of its molecules in crystal was characterized. Membrane transport properties of the new phosphorylated amino acids with respect to polyfunctional carboxylic acids were studied, and factors responsible for the efficiency and selectivity of membrane transport of acid substrates were estimated. Selective extraction of glutaric acid through a liquid membrane containing N,N-bis[(dioctylphosphoryl)methyl]-β-alanine was revealed

Synthesis and membrane transport properties of bis(dihexylphosphorylmethyl)-1,4-diaminebutane

© 2016 Taylor & Francis Group, LLC.The membrane-transport properties have been studied. It was found that bis(dihexylphosphorylmethyl)- 1,4-diaminebutane is a good extractant for triply charged metal ions such as Sc(III), Nd(III), and Sm(III). However, it does not exhibit any noticeable selectivity with respect to certain substrates. Bis(dihexylphosphorylmethyl)-1,4-diaminebutane is a good carrier of nitric acid.We have recorded the crystal structure of the complex of the reagent mentioned with the nitric acid

Production of nano-bentonite and the study of its effect on mutagenesis in bacteria Salmonella typhimurium

© 2016, Pleiades Publishing, Ltd.The production of nano-bentonite and its effects on mutation process in the strains of Salmonella typhimurium are studied. It is revealed that nano-bentonite particles essentially differ from bentonite particles in structure, size, and shape. Bentonite particles are cone-shaped and 0.3 to 1.0 μm in size, whereas nanobentonite nanoparticles are oval-shaped and 25 to 95 μm in size. Single particles (less than 10.0%) are irregular polyhedra and 0.6 μm in size. The structure of bentonite consists of separate fragments of constituent minerals composed of packages–lamelee 0.6 μm in size cemented with an amorphous mass. An amorphous mass containing single micrometer-sized packages–lamelee is observed in the structure of the nano-bentonite. It is determined that nano-bentonite does not possess mutagenic activity on microorganisms. The study of antimutagenic potential of nano-bentonite reveals that it possesses a moderate inhibitory effect on mutagenesis caused by mitomycin C, 2,4-dinitrophenylhydrazine, and ethyl methanesulphonate, but does not inhibit genotoxic potential of hydrogen peroxide. The results demonstrate that nano-bentonite is nongenotoxic and can be used for the development of next-generation safe nanotechnological materials

АНАЛИЗ ИНФОРМАЦИОННОЙ БАЗЫ И СИСТЕМЫ ПОКАЗАТЕЛЕЙ СТАТИСТИКИ МИГРАЦИОННОГО ДВИЖЕНИЯ НАСЕЛЕНИЯ В СОВРЕМЕННОЙ РОССИИ

In article classification of possible optionsof impact of population shift on a socialand economic situation developed, andthe directions of improvement of information base of the Russian migratorystatistics offered.Встатьебыларазработанаклассификация возможных вариантов воздействия миграциинаселения насоциально-экономическуюобстановку, атакжепредложенынаправлениясовершенствования информационной базы российской миграционной статистики

In-situ temperatures and thermal properties of the East Siberian Arctic shelf sediments: Key input for understanding the dynamics of subsea permafrost

Significant reserves of methane (CH4) are held in the Arctic shelf, but the release of CH4 to the overlying ocean and, subsequently, to the atmosphere has been believed to be restricted by impermeable subsea permafrost, which has sealed the upper sediment layers for thousands of years. Our studies demonstrate progressive degradation of subsea permafrost which controls the scales of CH4 release from the sediment into the water-atmospheric system. Thus, new knowledge about the thermal state of subsea permafrost is crucial for better understanding of the permafrost -hydrate system and associated CH4 release from the East Siberian Arctic Shelf (ESAS) – the broadest and shallowest shelf in the World Ocean, which contains about 80% of subsea permafrost and giant pools of hydrates. Meanwhile, the ESAS, still presents large knowledge gaps in many aspects, especially with respect to subsea permafrost distribution and physical properties of bottom sediments. New field data show that the ESAS has an unfrozen (ice-free) upper sediment layer, which in-situ temperature is −1.0 to −1.8 °C and 0.6оС above the freezing point. On one hand, these cold temperature patterns may be related to the presence of subsea permafrost, which currently primarily occurs in the part of the ESAS that is shallower than 100 m, while ice-bearing sediments may also exist locally under deeper water in the Laptev Sea. On the other hand, the negative bottom sediment temperatures of −1.8 °C measured on the Laptev Sea continental slope sediments underlying water columns as deep as down to 330 m may result from dissociation of gas hydrates or possibly from dense water cascading down from the shelf. In contrast, data collected on recent expeditions in the northern Laptev shelf, zones of warmer bottom temperatures are coinciding with methane seeps, likely induced by seismic and tectonic activity in the area. These warm temperatures are not seen in the East Siberian Sea area, not even in areas of methane seeps, yet with little seismic activity. The thermal conductivity and heat capacity of bottom sediments recorded in the database of thermal parameters for the ESAS areas mainly depend on their lithification degree (density or porosity), moisture content, and particle size distribution. The thermal conductivity and heat capacity average about 1.0 W/(m·K) and 2900 kJ/(m3·K), with ±20% and ±10% variance, respectively, in all sampled Arctic sediments to a sub-bottom interval of 0–0.5 m

The Opposition of Orthodoxy Images in the Russian Cinema of the 21st Century: Origins and Causes

In this article the question about influence of experience in «deliberate» USSR atheism on religiosity of modern Russian citizens is raised. The theme comes to light in relationships of religion and cinema and also through contradictions in Orthodoxy questions for modern Russian citizens in the cinema.В данном тексте поднимается вопрос о влиянии опыта нарочитого атеизма СССР на религиозность современного россиянина. Тема раскрывается через отражение тех или иных тенденции в отношении религии через кинематограф и то, как искусство кино способно выразить противоречия в вопросе православия для современного гражданина России

Religious foundation of cosmism by N. F. Fedorov

The article is devoted to the philosophy of cosmism. Fedorov, who first turned to the idea of conquering the universe, bearing in mind not only the speculative universe, but also the astronomical universe. He builds his doctrine on the necessity of an absolute synthesis of science, religion, art and philosophy.Статья посвящена философии космизма Н. Ф. Фёдорова, который первым обратился к идее покорения Вселенной, имея в виду при этом не только умозрительную Вселенную, а также Вселенную астрономическую. Cвое учение он выстраивает на необходимости абсолютного синтеза науки, религии, искусства и философии