495 research outputs found

    ΠŸΡ€ΠΎΠ΅ΠΊΡ‚ Ρ†Π΅Ρ…Π° магнийтСрмичСского восстановлСния бСриллия, ΠΏΡ€ΠΎΠΈΠ·Π²ΠΎΠ΄ΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎΡΡ‚ΡŒΡŽ 30 Ρ‚ΠΎΠ½Π½ Π² Π³ΠΎΠ΄

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    Π”Π°Π½Π½Ρ‹ΠΉ Π΄ΠΈΠΏΠ»ΠΎΠΌΠ½Ρ‹ΠΉ ΠΏΡ€ΠΎΠ΅ΠΊΡ‚ посвящСн ΠΏΡ€ΠΎΠ΅ΠΊΡ‚ΠΈΡ€ΠΎΠ²Π°Π½ΠΈΡŽ Ρ†Π΅Ρ…Π° для получСния мСталличСского бСриллия ΠΏΡ€ΠΎΠΈΠ·Π²ΠΎΠ΄ΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎΡΡ‚ΡŒΡŽ 30 Ρ‚ΠΎΠ½Π½ Π² Π³ΠΎΠ΄. Π’ Ρ…ΠΎΠ΄Π΅ ΠΏΡ€ΠΎΠ΅ΠΊΡ‚Π° ΠΏΡ€ΠΎΠ²Π΅Π΄Ρ‘Π½ Π»ΠΈΡ‚Π΅Ρ€Π°Ρ‚ΡƒΡ€Π½Ρ‹ΠΉ ΠΎΠ±Π·ΠΎΡ€ ΡΡƒΡ‰Π΅ΡΡ‚Π²ΡƒΡŽΡ‰ΠΈΡ… ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΎΠ² получСния мСталличСского бСриллия, ΠΏΡ€ΠΎΠ°Π½Π°Π»ΠΈΠ·ΠΈΡ€ΠΎΠ²Π°Π½Ρ‹ ΠΈΡ… основныС достоинства ΠΈ нСдостатки. Из извСстных ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΎΠ² Π²Ρ‹Π±Ρ€Π°Π½ магнийтСрмичСский ΠΌΠ΅Ρ‚ΠΎΠ΄ получСния бСриллия Π² ΠΈΠ½Π΄ΡƒΠΊΡ†ΠΈΠΎΠ½Π½ΠΎΠΉ ΠΏΠ΅Ρ‡ΠΈ. По Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Π°ΠΌ ΠΌΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π»ΡŒΠ½ΠΎΠ³ΠΎ баланса ΠΏΡ€ΠΎΠΈΠ·Π²Π΅Π΄Π΅Π½ Π°ΠΏΠΏΠ°Ρ€Π°Ρ‚ΡƒΡ€Π½Ρ‹ΠΉ ΠΈ гидравличСский расчёты ΠΈΠ½Π΄ΡƒΠΊΡ†ΠΈΠΎΠ½Π½ΠΎΠΉ ΠΏΠ΅Ρ‡ΠΈ. ΠšΡ€ΠΎΠΌΠ΅ Ρ‚ΠΎΠ³ΠΎ, ΠΏΡ€Π΅Π΄Π»ΠΎΠΆΠ΅Π½Π° Ρ„ΡƒΠ½ΠΊΡ†ΠΈΠΎΠ½Π°Π»ΡŒΠ½Π°Ρ схСма Π°Π²Ρ‚ΠΎΠΌΠ°Ρ‚ΠΈΠ·Π°Ρ†ΠΈΠΈ производства, рассмотрСны основныС опасности ΠΈ врСдности.This thesis project is dedicated to the design shop for beryllium metal production capacity of 30 tons per year. The project conducted a literature review of existing methods of producing metal beryllium, analyzed their main advantages and disadvantages. Of the known methods of obtaining a method selected beryllium with magnesium in an induction furnace. As a result of the material balance carried Apparatus and hydraulic calculations of the induction furnace. In addition, the proposed functional automation of production scheme, the basic risks and hazards

    ΠŸΡ€ΠΎΠ΅ΠΊΡ‚ энСргоблока АЭБ ΠΏΠΎΠ²Ρ‹ΡˆΠ΅Π½Π½ΠΎΠΉ манСврСнности

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    Выпускная квалификационная Ρ€Π°Π±ΠΎΡ‚Π° 132 с., 29 рисунков, 25 Ρ‚Π°Π±Π»ΠΈΡ†, 35 источников, 6 ΠΏΡ€ΠΈΠ»ΠΎΠΆΠ΅Π½ΠΈΠΉ. ΠšΠ»ΡŽΡ‡Π΅Π²Ρ‹Π΅ слова: атомная станция, ядСрный Ρ€Π΅Π°ΠΊΡ‚ΠΎΡ€, Ρ‚Π΅ΠΏΠ»ΠΎΠ½ΠΎΡΠΈΡ‚Π΅Π»ΡŒ, насыщСнный ΠΏΠ°Ρ€, ΠΏΠ°Ρ€ΠΎΠ³Π΅Π½Π΅Ρ€Π°Ρ‚ΠΎΡ€, паротурбинная установка. ΠžΠ±ΡŠΠ΅ΠΊΡ‚ΠΎΠΌ исслСдования являСтся атомная станция с ΡƒΠ»ΡƒΡ‡ΡˆΠ΅Π½Π½Ρ‹ΠΌΠΈ характСристиками манСврСнности, прСдназначСнная для Π³Π΅Π½Π΅Ρ€Π°Ρ†ΠΈΠΈ элСктричСской ΠΈ Ρ‚Π΅ΠΏΠ»ΠΎΠ²ΠΎΠΉ энСргии Π² суточном Π³Ρ€Π°Ρ„ΠΈΠΊΠ΅ рСгулирования ЦСль Ρ€Π°Π±ΠΎΡ‚Ρ‹ – оптимизация Ρ€Π°Π±ΠΎΡ‚Ρ‹ АЭБ Π² Ρ€Π΅ΠΆΠΈΠΌΠ°Ρ… суточного рСгулирования. Π’ процСссС выполнСния ΠΏΡ€ΠΎΠ΅ΠΊΡ‚Π° ΠΏΡ€ΠΎΠ²ΠΎΠ΄ΠΈΠ»ΠΈΡΡŒ исслСдования экономичСского эффСкта ΠΎΡ‚ внСдрСния Π³ΠΈΠ΄Ρ€ΠΎΠΌΡƒΡ„Ρ‚Ρ‹ Π½Π° ΠΏΡ€ΠΈΠ²ΠΎΠ΄Π΅ ΠΏΠΈΡ‚Π°Ρ‚Π΅Π»ΡŒΠ½Ρ‹Ρ… насосов. Π’ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Π΅ исслСдования ΠΏΠΎΠ΄Ρ‚Π²Π΅Ρ€ΠΆΠ΄Π΅Π½Ρ‹ оТидания экономичСского эффСкта, ΠΎΠΏΡ€Π΅Π΄Π΅Π»Π΅Π½Π° экономия элСктричСской энСргии Π½Π° собствСнныС Π½ΡƒΠΆΠ΄Ρ‹.Graduation thesis 132 p., 29 figures, and 25 tables, 35 sources of, 6 applications. Key words: nuclear power station, nuclear reactor, coolant, saturated steam, steam generator, steam turbine. The object of study is the nuclear power plant with improved manoeuvrability, designed for generation of electric and thermal energy in a daily chart regulation The work purpose is optimization of NPP operation in the modes involved. In the process of implementation of the project was undertaken to study the economic effect of the introduction of the fluid coupling on the drive of feed pump. The study confirmed the expectations of economic benefits, identified savings of electric energy for own needs

    ΠžΠΏΡ€Π΅Π΄Π΅Π»Π΅Π½ΠΈΠ΅ ΠΏΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€ΠΎΠ² ΠΊΠΎΠ»Π΅Π±Π°Π½ΠΈΠΉ Π² элСктроприводах постоянного Ρ‚ΠΎΠΊΠ° с ΠΈΠΌΠΏΡƒΠ»ΡŒΡΠ½Ρ‹ΠΌ Ρ€Π΅Π³ΡƒΠ»ΠΈΡ€ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ скорости

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    AbstractA comprehensive experimental approach has been used to assess the interrelation of CO2-mediated chemical reactions and transport properties in pelitic rocks. Sorption values on shale samples (P<20 MPa, 50 ∘C) were high with maximum amounts of ∼44 kg/t. These capacities did not correlate with the organic carbon content, indicating sorption on and/or reaction with mineral components. Further, crushed shale samples were exposed to CO2 in the presence of water at 15 MPa and 50 ∘C for different time periods, showing significant changes in mineral composition. Reaction equilibrium was reached within periods of less than a month. Some of the caprock lithotypes could represent a significant sink for CO2 deposited in the subsurface and could reduce the risk of leakage to the surface

    Π‘Ρ‚Π΅ΠΏΠ΅Π½ΡŒ ΠΈ Π³Π»ΡƒΠ±ΠΈΠ½Π° Π½Π°ΠΊΠ»Π΅ΠΏΠ° повСрхности отвСрстия ΠΏΡ€ΠΈ Π³Π»ΡƒΠ±ΠΎΠΊΠΎΠΌ свСрлСнии твСрдосплавными свСрлами одностороннСго рСзания

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    A comprehensive set of experimental and analytical methods has been used to characterise the sealing and fluid -transport properties of fine-grained (pelitic) sedimentary rocks under the pressure and temperature conditions of geological CO2 storage. The flow experiments were carried out on cylindrical sample plugs of 28.5 or 38 mm diameter and 10-20 mm length. The capillary sealing effici ncy of the lithotypes was determined by repetitive gas breakthrough experiments to test for reproducibility and to detect petrophysical changes of the rock samples resulting from CO2/water/rock interactions. These tests were performed with both, Helium and sc CO2 on the initially water-saturated sample plugs. Although molecular diffusion is not considered as an efficient leakage mechanism it represents a rate-determining step in mineral reactions and reactive transport. Therefore repetitive CO2 diffusion experiments were carried out on selected samples in the water-saturated state. These measurements provide information on the molecular mobility of CO2 and its hydrolysis products and on the physical and chemical storage capacity of the rock for these species. Before and after each experiment a steady -state fluid flow of water was established across the samples by applying high pressure gradients. This procedure ensured a defined state of saturation. Permeability coefficients derived from these tests were used to detect changes in the transport properties resulting from exposure to CO2. The fluid transport experiments were complemented by petrophysical (BET specific surface area, mercury porosimetry) and mineralogical analyses (X-ray diffraction; XRD ) of the original and post -experiment samples. The experiments revealed significant changes in the transport properties and the sealing efficiency of the samples. The gas breakthrough tests resulted in reduced capillary entry pressures and increased effective gas permeability as a result of repetitive exposure to CO2. Repeated diffusion tests revealed a faster diffusive transport in the second experiment. An increase in water permeability was consistently observed after both, capillary breakthrough tests and diffusi on experiments with CO2. The BET and mercury porosimetry results were not significantly affected by the CO2 treatment. XRD measurements before and after CO2 treatment revealed significant variations in the mineral compositions of the samples upon exposure to CO2. Β© 2009 Elsevier Ltd. All rights reserved

    ΠŸΡ€ΠΎΠ΅ΠΊΡ‚ΠΈΡ€ΠΎΠ²Π°Π½ΠΈΠ΅ оборудования автоцистСрны для примСнСния Π² подраздСлСниях Π΄ΠΎΠ±Ρ€ΠΎΠ²ΠΎΠ»ΡŒΠ½ΠΎΠΉ ΠΏΠΎΠΆΠ°Ρ€Π½ΠΎΠΉ ΠΎΡ…Ρ€Π°Π½Ρ‹ Π½Π° Π±Π°Π·Π΅ ΡΠΏΠ΅Ρ†ΠΈΠ°Π»ΡŒΠ½ΠΎΠ³ΠΎ автомобиля АРБ-14

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    ΠΠΊΡ‚ΡƒΠ°Π»ΡŒΠ½ΠΎΡΡ‚ΡŒ Π΄Π°Π½Π½ΠΎΠΉ Ρ€Π°Π±ΠΎΡ‚Ρ‹ Π·Π°ΠΊΠ»ΡŽΡ‡Π°Π΅Ρ‚ΡΡ Π² Ρ‚ΠΎΠΌ, Ρ‡Ρ‚ΠΎ ΠΏΠΎΠΆΠ°Ρ€Ρ‹ с Ρ‚Π΅Ρ‡Π΅Π½ΠΈΠ΅ΠΌ Π²Ρ€Π΅ΠΌΠ΅Π½ΠΈ ΠΎΡ…Π²Π°Ρ‚Ρ‹Π²Π°ΡŽΡ‚ Π±ΠΎΠ»ΡŒΡˆΡƒΡŽ Ρ‚Π΅Ρ€Ρ€ΠΈΡ‚ΠΎΡ€ΠΈΡŽ ΠΈ наносит Π·Π½Π°Ρ‡ΠΈΡ‚Π΅Π»ΡŒΠ½Ρ‹ΠΉ экономичСский ΡƒΡ‰Π΅Ρ€Π± сСльским посСлСниям, ΡƒΠ΄Π°Π»Π΅Π½Π½Ρ‹ΠΌ Π½Π° Π·Π½Π°Ρ‡ΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎΠ΅ расстояниС ΠΎΡ‚ ΠΏΠΎΠ΄Ρ€Π°Π·Π΄Π΅Π»Π΅Π½ΠΈΠΉ ЀПБ МЧБ России. Π’ связи с этим ΡƒΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡ‚ΠΎΠ²Π°Π½ΠΈΠ΅ Π΄ΠΎΠ±Ρ€ΠΎΠ²ΠΎΠ»ΡŒΠ½ΠΎ ΠΏΠΎΠΆΠ°Ρ€Π½Ρ‹Ρ… ΠΊΠΎΠΌΠ°Π½Π΄ Π’Π”ΠŸΠž являСтся Ρ€Π΅ΡˆΠ΅Π½ΠΈΠ΅ΠΌ Π΄Π°Π½Π½ΠΎΠΉ ΠΏΡ€ΠΎΠ±Π»Π΅ΠΌΡ‹. ЦСлью Π΄Π°Π½Π½ΠΎΠΉ Ρ€Π°Π±ΠΎΡ‚Ρ‹ являСтся ΠΏΠΎΠ²Ρ‹ΡˆΠ΅Π½ΠΈΠ΅ эффСктивности вСдСния ΠΏΠΎΠΆΠ°Ρ€ΠΎΡ‚ΡƒΡˆΠ΅Π½ΠΈΡ подраздСлСниями Π’Π”ΠŸΠž.The relevance of this work is that fires over time cover a large area and cause significant economic damage to rural settlements remote from a significant distance from the units of the Federal Emergency Service of Russia. In this regard, the manning of volunteer firefighters VDPO is the solution to this problem. The purpose of this work is to increase the efficiency of firefighting by VDPO units

    ГСология ΠΈ ΠΏΡ€ΠΎΠ΅ΠΊΡ‚ поисковых Ρ€Π°Π±ΠΎΡ‚ Π½Π° Π·ΠΎΠ»ΠΎΡ‚ΠΎ-сСрСбряноС ΠΎΡ€ΡƒΠ΄Π΅Π½Π΅Π½ΠΈΠ΅ участка Π‘Π°Ρ…Ρ‡Π°Π½ МаймандТинской пСрспСктивной ΠΏΠ»ΠΎΡ‰Π°Π΄ΠΈ (Магаданская ΠΎΠ±Π»Π°ΡΡ‚ΡŒ)

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    ΠžΠ±ΡŠΠ΅ΠΊΡ‚ΠΎΠΌ исслСдования являСтся участок Π‘Π°Ρ…Ρ‡Π°Π½ МайманТдинской пСрспСктивной ΠΏΠ»ΠΎΡ‰Π°Π΄ΠΈ (Магаданская ΠΎΠ±Π»Π°ΡΡ‚ΡŒ) ЦСль Ρ€Π°Π±ΠΎΡ‚Ρ‹: ΠΈΠ·ΡƒΡ‡Π΅Π½ΠΈΠ΅ особСнностСй гСологичСского строСния ΠΈ составлСниС ΠΏΡ€ΠΎΠ΅ΠΊΡ‚Π° поисковых Ρ€Π°Π±ΠΎΡ‚ Π½Π° Π·ΠΎΠ»ΠΎΡ‚ΠΎ-сСрСбряноС орудСнСния участка Π‘Π°Ρ…Ρ‡Π°Π½ МаймандТинской пСрспСктивной ΠΏΠ»ΠΎΡ‰Π°Π΄ΠΈ. Π’ процСссС исслСдования ΠΏΡ€ΠΎΠ²ΠΎΠ΄ΠΈΠ»ΠΎΡΡŒ ΠΈΠ·ΡƒΡ‡Π΅Π½ΠΈΠ΅ ΠΈ Π°Π½Π°Π»ΠΈΠ· ΠΎΠΏΡƒΠ±Π»ΠΈΠΊΠΎΠ²Π°Π½Π½ΠΎΠΉ ΠΈ Ρ„ΠΎΠ½Π΄ΠΎΠ²ΠΎΠΉ спСциализированной Π»ΠΈΡ‚Π΅Ρ€Π°Ρ‚ΡƒΡ€Ρ‹.The object of the study is the Sakhchan section of the Maimandzhdinskaya prospective area (Magadan Oblast). The purpose of the study is to study the features of the geological structure and compile a draft search for gold-silver mineralization of the Sakhchan section of the Maymanjin Prospect Area. In the process of research, the analysis and analysis of published and specialized specialized literature
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