618 research outputs found

    Issues of forensic inquiries and preliminaries in investigating ecological crimes

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    The article touches upon current theoretical and practical issues of forensic inquiries and preliminaries’ proceedings in the process of ecological crimes’ investigation. Moreover, the authors highlight the peculiarities of investigations’ classifications, their role, place and comprehensiveness.peer-reviewe

    Differences in behaviour of adsorbed water in kaolinites and montmorillonites in temperature range from -90°C to +140°C by dielectric spectroscopy

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    Two different types of natural layer aluminosilicates (clay minerals), montmorillonite with the exchangeable K+ and Ni2+ cations and kaolinite with the exchangeable K+ and Ba2+ cations, were investigated by dielectric spectroscopy. The different effects of water adsorption in montmorillonites and kaolinites on the dielectric response were observed in wide temperature (-90°C ÷ +140°C) and frequency (1 Hz ÷ 1 MHz) ranges. The influence of the nature of the hydration centers on adsorbed water dynamics and influence of ions nature on the activation energy values of the relaxation processes were discussed

    Two types of adsorbed water in natural montmorillonites at low temperatures by dielectric spectroscopy

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    Dielectric spectroscopy was applied to natural clay mineral - montmorillonite with the exchangeable K+ and Ni2+ cations where the effect of water adsorption in the samples on the dielectric response was examined in the temperature from -115°C to -75°C and frequency from 1 Hz to 1 MHz ranges. Two relaxation processes (1 and 2) were revealed. The process 1 was related to the adsorbed ordered water structures formed on the interior surface of interlayer channels while the relaxation process 2 was attributed to the disordered water structures built between two surface water monolayers

    Legitimation of University in Modern Culture

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    The authors propose to consider university as a significant cultural topos. The significance of the topos is provided by the narrative integrated in it. It reflects the values and inscribes the university into the current cultural situation. The authors give several historical examples to support their thesis that this narrative is a response to external cultural challenges. The current situation is rife with such challenges, and therefore, the creation of a legitimizing narrative for the university turns out to be quite problematic. The authors study the influence of such factors as massification of education, media communication, social, demographic changes, etc. Examples of modern Russian and foreign universities demonstrate self-legitimization process of the university and show its visual part. The universities represent their own position, history and current values by creating their own visual code. The authors adduce as examples modern universities’ websites with the visual images that are presented on their title pages. Based on this material, the authors draw a conclusion about the main modern strategies of self-legitimation of the university as positioning on the scales: tradition and innovation, loyalty to the government and independence from it, history and community

    TREATMENT OF EXPERIMENTAL PERIODONTITIS BY TERPENE-CONTAINING MEDICATION

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    Therapeutic effect of terpenoidisobornylacetate-containing preparation Antiran on the inflammatory process in paradontium in 56 white outbread rats was researched. Animals of control group wasn't provide the treatment, animals of treatment group had antibiotic dialysis from 1st till 3rd day, ultrasound curettage with Antiran solution on the 4th day, Antiran dialysis in the paradontium tissues for 20 minutes OD from 5th to 14th day. Inflammatory process was studied using morphological methods. It was showed that Aniran arrests an inflammation, prevents secondary alteration of tissues, promotes reparative processes and recovery of damaged tissues

    Problems of Higher School Didactics: Uncut Pages

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    Higher education today is not going through the best of times: decisions taken in the educational process at various levels (Federal Laws “On Education in the Russian Federation” of 29.12.2012 No 273-FZ and “On Amendments to the Federal Law “On Education in the Russian Federation” on the education of students” of 31.07.2020 No 304-FZ, Federal State Educational Standards of Higher Education, etc.), related to global changes taking place in society and in the world in recent decades, were made without careful didactic study. This cannot help to improve the quality of specialist training. Teachers are forced to work “by trial and error”, producing countless didactic documents. At present, identification of didactic problems in the educational process of higher educational institutions is extremely relevant due to the expansion of the field of didactic research in higher school pedagogy.The aim of the authors was to analyze some of the most relevant didactic phenomena in the digital reality that have not yet received proper understanding. As a result of the analysis, some important didactic problems of higher education are identified, concerning goal-setting, compliance of teaching with classical didactic principles, organization of distance learning in electronic informational and educational environment, mixed and project-based learning. The article also dwells on psychological problems of Internet content assimilation and “non-contact” interaction between the subjects of the educational process, etc. The most promising areas of didactic research in higher education, including the development of interdisciplinary contacts, are highlighted

    The power supply system model of the process submersible device with AC power transmission over the cable-rope

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    A practical problem of power supply system modeling for the process submersible device with AC power transmission over the cable-rope was considered. The problem is highly relevant in developing and operation of submersible centrifugal pumps and submersibles. The results of modeling a symmetrical three-phase power supply system and their compliance with the real data are given at the paper. The obtained results in the mathematical and simulation models were similar

    Mathematical model for the power supply system of an autonomous object with an AC power transmission over a cable rope

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    A modeling problem of the power system, which provides an AC power transmission to a submersible device over the conducting rope, was considered. The power supply system units and their parameters are described. The system multi-dimensional mathematical model in the variables state space with regard to the nonlinear characteristic of system elements is proposed

    The percolation phenomenon and fractal dimension of natural silicates

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    © (2015) Trans Tech Publications, Switzerland. Many physical effects, such as dc conductivity and percolation, depend on the morphology of the silicate structure and its relationship to adsorbed water. These effects play an important role in numerous technological applications, in geology, oil-extracting industry, and other practical fields. In this study, all the samples: natural montmorillonite, kaolinite, and ?linoptilolite with different exchangeable cations in their structures, - were stored in ambient air humidity. The investigation was carried by using two separate techniques, namely Dielectric Spectroscopy and a fractal analysis of electron micrographs. The aims of this work were to analyze the complex relaxation behavior of the relaxation process in temperature range -70°C ÷ 70°C and to determine the fractal dimensions of silicates from the dielectric response at percolation. Dielectric measurements in the frequency range of 1 Hz ÷ 1 MHz were performed using a BDS 80 Dielectric Spectrometer based on an Alpha Impedance Analyzer (Novocontrol). The micrographs were analyzed using a special Matlab based program. The analysis of aspects of the dielectric relaxation spectra related to percolation was used for the determination of the numerical characteristics of geometric heterogeneity of natural silicates. The percolation temperatures of the studied samples were determined. The percolation phenomenon in the silicates is related to the transfer of the electric excitation within the developed network of open pores due to the migration of protons and ions along the surface of connected pores on the outer surfaces of the granules. The analysis of these processes allows one to extract the fractal dimensions associated with the migration of charge carriers within the porous medium. Fractal dimensions of the silicates calculated in two ways: from dielectric spectroscopy study and from fractal analysis of the micrographs, - are in good agreement with each other. It was demonstrated that conventional method of the spatial fractal dimension determination using fractal analysis of electron micrographs leads to overestimation in the case of spatial fractal bounded by a surface fractal. The dielectric spectroscopy method is free from such overestimation
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