Attitude Diagrams for the Description of the Attitude Drift of Torquefree Asymmetric Gyros

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Analysis of the process of immersion of kernels in liquids with different specific mass

In a grain pile there is material other than grain including poisonous ergot sclerotia. Grain and sclerotia of ergot by linear dimensions and speed of soaring have similar characteristics. Complete separation of grain from ergot by these properties in a single process is impossible. Cleaning seeds from ergot sclerotia with the specific mass less than the specific mass of grain is possible in a salt solution. To mechanize the separation of ergot sclerotia from rye seeds by the wet method, there is an urgent need in the development of an appropriate device. Under study was an immersion in water (ρzh = 1.0∙103 kg/m3 ) and aqueous solutions of sodium chloride (NaCl) with a specific mass ρzh = 1.09∙103 and 1.15∙103 kg/m3 of individual rye grains with their specific mass ρz = 1.2...1.5∙103 kg/m3 , length lz = 5.0...10.0 10-3 m, width в = 1.4...3.6∙10-3 m and thickness δ = 1.2...3.5∙10-3 m. Theoretical studies were carried out on the basis of mathematical modeling methods using the laws of hydrodynamics, which were confirmed by experimental studies with winter rye grains of the Falenskaya 4 variety with a specific mass ρz = 1.1...1.3 103 kg/m3 , length lz = 5.0...8.0∙10-3 m, width в = 1.4...3.6∙10-3 m and thickness δ = 1.2...3.5∙10-3 m. It has been established that the calculated values of the immersion velocity of cylindrical kernels and spheroidal kernels in comparison with the experimental values in water (ρzh = 1.0∙103 kg/m3 ) is not more than 2%, and in aqueous solutions of sodium chloride (NaCl) the specific mass ρzh = 1.09∙103 and 1.15∙103 kg/m3 – 7 and 10%, respectively. This approach to determining the speed of immersion of grain in liquid can be used in the development of the machine for cleaning grain according to specific mass using wet method to substantiate its structural and technological parameters

Viscosity and electric conductivity of melt system of CaO – Al2O3 - B2O3

It was studied the viscosity and electric conductivity of the melt system CaO - Al2O3 - B2O3. On the base of experimental data it was created the mathematical model of studied features dependence on chemical structure of melt and temperature. There were created the computer programs which allow to calculate the temperature range at 1 823 – 1 973 K. There were constructed the triaxial diagrams based on models. It was found the reduction of viscosity and extension of electric conductivity of melt CaO - Al2O3 by adding B2O3

Erstarren eines antriebslosen dissipativen Modellkreisels

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Strukturelle Resonanzen und die Lagedrift drehmomentfreier Kreiselsatelliten

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Dynamik dissipativer Kreisel

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Role discovery in node-attributed public transportation networks: the model description

Modeling public transport systems from the standpoint of the theory of complex networks is of great importance to improve their efficiency and reliability. An important task here is to analyze the roles of nodes and weighted links in the network, respectively modeling groups of public transport stops and their linking routes. In previous works, this problem was solved based on only topological and geospatial information about the presence of routes between stops and their geographical location which led to the problem of uninterpretability of the discovered roles. In this article, to solve the problem, the model additionally considers information about the social infrastructure around the stops and discovers topological, geospatial, and infrastructure roles jointly. The public transport system is modeled using a special weighted network — with node attributes where nodes are non-overlapping groups of stops united by geospatial location, node attributes are vectors containing information about the social infrastructure around stops, and weighted links integrate information about the distance and number of transfers in routes between stops. To identify the model, it is sufficient to use only open urban data on the public transport system. Role discovery for stops is carried out by clustering network nodes in accordance with their topological and attributive features. An extended model of the public transport system and a new approach to solving the problem of discovering the roles of stops, providing interpretability from the topological, geospatial and infrastructural points of view, are proposed. The model was identified on the open data of Saint Petersburg about metro stations, trolleybus and bus stops as well as organizations and enterprises around the stations and stops. Based on the data, balanced parameters for grouping stops, assigning link weights and constructing attribute vectors are found for further use in the role discovery task. The results of the study can be used to identify transport and infrastructure shortcomings of real public transport systems which should be considered to improve the functioning of these systems in the future

Cytoprotection as an available means in the therapy of occupational diseases (literature review)

In this article presents a literature review of the use of cytoprotective drugs in the treatment of occupational pathology. The possibilities and prospects of using cytoprotectors in the complex therapy of occupational diseases are considered. The most frequent cases of the use of drugs of this group in occupational pathology are presented, their main effects are highlighted, hypotheses are formulated about the further prospects of using drugs of this group in the treatment of occupational diseases.В статье представлен литературный обзор применения цитопротективных препаратов при лечении профпатологии. Рассмотрены возможности и перспективы применения цитопротекторов в составе комплексной терапии профессиональных заболеваний. Приведены наиболее частые случаи применения препаратов данной группы в профпатологии, выделены их основные эффекты, сформулированы гипотезы о дальнейших перспективах использования препаратов данной группы в терапии профессиональных заболевани

Commissioning of the World's First Domestic Third-Generation Nuclear Reactor “Hualong One” as a Stimulus to Start Competing with Nuclear Power with its Solar-Wind Segment on the Way to Decarbonizing China

В 2020 г. в Китае число проектов по установке ветряных и солнечных электростанций росло намного быстрее, чем эти показатели в атомной энергетике, от которой ожидается аналогичный успех, прогноз которого подкреплен своевременным введением в коммерческую эксплуатацию первого в мире полностью отечественного ядерного реактора третьего поколения “Hualong One”. По причине сдачи данного объекта в срок, себестоимость его реализации снизилась, и теперь Китай планирует повторить это в нескольких внутригосударственных проектах и за рубежом, тем самым начав конкуренцию атомной энергетики с ее солнечно-ветровым сегментом на пути декарбонизации страны в рамках достижения цели нулевого уровня выбросов углерода к 2060 г.In 2020, the number of wind and solar power installation projects in China grew much faster than these figures for nuclear power, which is expected to be similarly successful, a forecast reinforced by the timely commissioning of the world's first fully domestic, third-generation nuclear reactor, “Hualong One”. Because this facility was delivered on time, its cost of implementation has fallen, and China now plans to repeat this in several domestic projects and abroad, thereby beginning to compete with nuclear power with its solar-wind segment on the road to decarbonizing the country as part of its goal of zero carbon emissions by 2060