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Dissolution of a Mixture of Uranium and Plutonium Compounds
(2021) Selyavskii, V. Y.; Ushakov, D. A.; Fedorov, M. S.; Zhiganov, A. N.; Zozulya, D. V.; Sofronov, V. L.; Eshchev, V. A.; Жиганов (Zhiganov, A. N.), Александр Николаевич; Софронов (Sofronov, V. L.), Владимир Леонидович; Кафедра «Химия и технология материалов современной энергетики» (ХиТМСЭ)
© 2021, Pleiades Publishing, Ltd.Abstract: Results are presented of a study concerned with the dissolution of uranium and plutonium compounds, carried out to diminish the amount of wastes in the form of a scrap formed in manufacture of a mixed nitride uranium-plutonium (MNUP) fuel. The optimal conditions of dissolution in nitric acid of uranium and plutonium compounds contained in the scrap were determined. The influence exerted by the concentration of nitric acid, process temperature, and addition of fluoride ions to the solution on the dissolution process were examined.
Computer vision method for forest fires detection based on rgb images obtained by unmanned motor glider
(2021) Kataev M. Yu.; Kartashov E. Yu.; Карташов (Kartashov, E. K.), Евгений Юрьевич; Кафедра «Машины и аппараты химических и атомных производств» (МАХАП)
The article proposes a method (algorithm) of forest fire detection by means of RGB images obtained by using an unmanned aerial vehicle (motor glid-er). It includes several stages associated with back-ground detection and subtraction and recognition of fire areas by means of RGB colour space. The proposed method was tested using images of forest fires. It is proposed to use unmanned aerial vehicles capable to monitor large areas continuous-ly for several hours. The results of calculations are shown, which demonstrate that the proposed method allows us to detect areas of images occupied by forest fires and may be used in automatic forest fire monitoring systems. © 2021, LLC Editorial of Journal ""Light Technik"". All rights reserved.
The problem of historical interpretation of ancient indo-european noun declensions
(2021) Kazantceva, T. Yu,; Казанцева (Kazantseva, T. Yu. ), Татьяна Юрьевна; Кафедра «Иностранные языки» (ИЯ)
The article examines the features of ancient Indo-European noun declensions. Most of the scientists note the declension paradigm being built according to the stem-building markers which refer to relics of the active class. Due to the source antiquity, it is difficult to restore semantic subgroups of names associated with certain stem-building markers. Therefore, in some languages the preference is given to types of markers while in the rest to other ones. There is a tendency to unify a marker having a common meaning. Little research has been undertaken to identify the grammatical function of ancient German stem-building markers in nothing but, on the one hand, they were a feature of a certain declension, on the other hand, that of certain noun groups. Unfortunately, it does not clarify indoeuropeistics. Many attempts have been made to associate with noun division according to their semantics and to semantize stem-building markers. However, ancient Germanic languages, including Gothic, retained the noun division in the declension paradigm according to a stem-building marker. As for the Gothic language, the concept of basic division coexists with gender division. A lot of animate names should be noted to be concentrated in the declension with unmarked stems according to the concept of gender. The lexical meaning of nouns obviously reflects the former Indo-European state when every living, growing as well as socially significant thing was referred to an animate name. Therefore, the lexical composition of relict declensions is one of the most important elements in clarifying the role and significance of stem-building markers. Logical conclusion is that stem-building markers became formal signs of declensions just over time. At first, these formal signs of declensions were not indifferent to noun semantics and only joined certain names distinguishing them among the others. Lexical analysis of Gothic nouns with stem-building markers convinces of the ancient origin of consonantal elements -j-, -w-, -n-. The consonantal elements of stem-building markers, as classifying signs, cease to perform their semantic function and take a new function of animateness.
Saturation of rocks of the bazhenov formation
(2021) Glotov, A. V.; Michailov, N. N.; Molokov, P. B.; Shaldybin, M. V.; Lopushyak, Yu. M.; Молоков (Molokov, P. B.), Петр Борисович; Кафедра «Химия и технология материалов современной энергетики» (ХиТМСЭ)
© 2021, Neftyanoe Khozyaistvo. All rights reserved.Evaluating of core saturation in case of oil source rocks of the Bazhenov formation by standard methods is not trivial task that hinders systematic mea-surements. An example is the existing method of distilling water in the Zaks (or Dean-Stark) apparatus, which does not allow to determine small amounts of water with high accuracy, in addition, the method is not "in-line"-it takes up to a week for one measurement. This leads to use for reserve calculation and planning mining values of oil saturation, which are not confirmed by actual data or determined on single core samples. The method was of-fered authors, based on combination of thermal and spectrometric tech-niques, let allowed measuring water saturation and oil saturation for core 12 oil fields. The results obtained indicate about significant variation in saturation by cross section of the Bazhenov formation, and the modal values of water saturation exceed those, that are usually used for reserve calculation. «Scale» factor significantly influences on the core properties, and actual values of water saturation may be higher. The degree of mobility of water in open porous space is important value. Established opinion that all water in the Bazhenov formation is associated with clays minerals is not confirmed by specially conducted researches. The dependence of water content and clayi-ness is linear with a high dispersion. The lowest values of water content tend to highly siliceous and carbonate rock, and the water in open voids is rather capillary-bound. The obtained values of chemically bound water released in process decomposition of minerals and transformation organic matter during heating, indicate high water content in closed pores. Studying of the features of water release in the temperature range corresponding to the decomposition (pyrolysis) of organic matter and minerals showed the presence of a large amount of water in closed pores.
Hydride-dehydride fine zirconium powders for pyrotechnics
(2020) Amelichkin I. V.; Knyazeva E. M.; Medvedev R.; Muslimova A. V.; Nefedov. R. A.; Orlov, V. V.; Sachkov, V. I.; Sachkova, A. S.; Zhukov, I. A.; Муслимова (Muslimova, A. V), Александра Валерьевна; Кафедра «Химия и технология материалов современной энергетики» (ХиТМСЭ)
In this paper, the possibility of obtaining fine zirconium powders by the hydrogenation-dehydrogenation method is studied. The main parameters of the technological process that allow obtaining fine zirconium powders for pyrotechnics are determined. Hydrogenation and dehydrogenation of the samples are carried out in a rotating quartz tube placed in a furnace at temperatures of 380° C and 850° C, respectively. Zirconium hydride is milled using tungsten carbide balls to eliminate the presence of impurities. Thus it is possible to obtain a fine zirconium powder with a number-average particle size of 4.527 ± 2.650 μm and a specific surface area of 0.231 m2/g from the initial electrolytic zirconium powder with a number-average particle size of 220 μm and a specific surface area < 0.1 m2/g. The allowed relative error of measuring the specific surface area is ± 5%. Hence it is possible to reduce the particle size of zirconium powder by 54.6 times without changing the composition.