Central Asian Journal of Theoretical and Applied Science
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Experimental Analysis of Municipal Solid Waste
No full textAs the quantity of municipal solid waste (MSW) increases with economic growth, problems arise in regard to sustainable management solutions. Thermal treatment presents a valid option for reducing the amounts of post-recycling waste to be landfilled. Incineration technology, besides reducing the total volume of waste and making use of the chemical energy in MSW for power generation, has negative environmental impact from high emission of pollutants. Recent policy to tackle climate change and resources conservation stimulated the development of renewable energy and landfill diversion technology, thereby giving gasification technology development renewed importance. In this work a two-dimensional CFD model for MSW gasification was developed and an Eulerian–Eulerian approach was used to describe the transport of mass, momentum and energy for the solid and gas phases. This model is validated using experimental data from the literature. The numerical results obtained are in good agreement with the reported experimental results
Влияние Схемы Посадки На Рост И Урожайность Малины
No full textВ научной статье приводится экспериментальный материал по изучению влияния схем размещения в плантации ремонтантного сорта малины Редвинг на развитие и продуктивность растений в первый, и второй год вегетации. Исследованием выявлено преимущество загущенного размещения растений по схеме 2,0х0,3 метра в сравнении с разреженной посадкой по схеме 2,5х0,5 м., при которой средний урожай за два года эксплуатации плантации составил 63,1 ц/га, что в 1,9 раза больше, чем при разреженной посадке (2,5х0,5 м)
Особенности Конструкции Котельного Оборудования И Повышения Эффективности Сгорания Топлива
No full textПредставлены топочные устройства малых котлов и эффективность использования топлива. На основе анализа технологической схемы устройства котла рассмотрены вопросы повышения эффективности использования энергии и даны рекомендации
Spectroscopy: An Important Tool for Structural Illustration of Heterocyclic Drugs
No full textSpectroscopy is the investigation and measurement of spectra produced by matter interacting with or emitting electromagnetic radiation. Originally, spectroscopy was defined as the study of the interaction between radiation and matter as a function of wavelength. Now, spectroscopy is defined as any measurement of a quantity as a function of wavelength or frequency. During a spectroscopy experiment, electromagnetic radiation of a specified wavelength range passes from a source through a sample containing compounds of interest, resulting in absorption or emission. During absorption, the sample absorbs energy from the light source. During emission, the sample emits light of a different wavelength than the source’s wavelength.
In absorption spectroscopy, the sample’s compounds are excited by the electromagnetic radiation provided by a light source. Their molecules absorb energy from the electromagnetic radiation, become excited, and jump from a low energy ground state to a higher energy state of excitation. A detector, usually a photodiode, on the opposite side of the sample records the sample’s absorption of wavelengths, and determines the extent of their absorption. The spectrum of a sample’s absorbed wavelengths is known as its absorption spectrum, and the quantity of light absorbed by a sample is its absorbance.
Each molecule within a sample will only absorb wavelengths with energies corresponding to the energy difference of the present transition. In simpler terms, this means that a molecule that jumps from ground state 1 to excited state 2, with an energy difference of ΔE, will allow other wavelengths to pass through until it can absorb radiation from a wavelength that corresponds to ΔE. Light that passes through to the photodiode without any absorption is called Stray Radiant Energy, or stray light. Absorption that occurs due to an energy difference between the two states is called an absorption line, and a collection of absorption lines creates an absorption spectra. The frequency of each absorption line in an absorption spectra tells us about the sample’s molecular structure, and can be influenced by factors such as stray light, environmental temperature, and electromagnetic fields
Эффективности Использования Мультимедийных Электронных Ресурсов В Вузе
No full textВ настоящее время основное внимание в области цифровых технологии фокусируется на проблемах создания и использования, эффективных мультимедийных электронных ресурсов. Для достижения полноты и качества использования, научных и практических знаний в образова-тельной системе требуется создать эффективную электронную платформу информационного обеспечения. В статью рассматриваются основные направления и эффективности использования мультимедийных электронных ресурсов в вузе
Improvement of the Technology of Liquefaction of A500 Low – Carbon Steel Alloy in an Electric ARC Furnace
No full textWe can say that the mode of liquefaction of steel alloy in an electric arc furnace was considered, in which quality steel alloys were obtained by adding different types of flux to the composition of the alloy during the liquefaction process. Modern electric arc furnaces can be divided into three categories: direct arc EAF, indirect arc EAF, and induction furnaces. 2 – as shown in the picture. All types of electric arc furnaces are designed for liquefaction of steel and alloy at high temperature, and their refractory lining is covered with basic or acidic materials. The electrodes of ordinary electric arc furnaces are cylindrical and the lining is basic
Роль Сезонных Солнечных Аккумуляторов В Экономии Топливных Ресурсов
No full textВ нынешний период дефицита ресурсов органического топлива представителям отрасли рекомендуется уделить особое внимание вопросу экономии и рационального использования топлива
The Clinical and Physiological Condition Ostriches with "Panaroot-98"
No full textThe article describes the effectiveness and influence of the drug "Panaroot-98" on the clinical and physiological indicators of 24 month-old ostriches: development, weight gain
Processing of Layout Tails of Gold-Extracting Plants
No full textIn this article, we have studied stale tailings of gold recovery factories. Which contains the minerals gold, silver and iron oxide. After studying, we can decide in what ways to recycle these tails. The results of the study of the possibility of utilizing the sands of the tailing dump formed as a result of the production activities of the gravitational, flotation and magnetic gold recovery factories are presented. This article focuses on the extraction of precious metals from the gold-mining factories. This is mainly due to the use of gravitation techniques at the Chadaksо gold-smelting plant, where the experiments were conducted in a research laboratory and collected
Теплобмен При Структурном Режиме Движены Влзко-Пластичны Жидкостей В Круглой Цилиндрической Трубе
No full textВ данной работе рассматривастоя теплообмен при движен- ия влзко-растичной жидкости в цилиндрической трубе