Технолгия очистки отходящих газов при производстве ферросплавов

В статье рассматривается проблема выбросов в атмосферу загрязненных отходящих газов в процессе выплавки ферросплавов. Предложена технологическая схема для очистки газов в ферросплавном производстве.The article considers the problem of emissions of polluted waste gases into the atmosphere during the smelting of ferroalloys. A technological scheme for purification of gases in ferroalloy production is proposed

Об одном алгоритме преобразования компонент связности

This work deals with the chemo-mechanical sub-aperture polishing of glass lenses using spiral tool path and pressure-inflated membrane tools. Current trends in manufacturing precision optics in Europe go to smaller lot sizes and an increasing ratio of custom specific lens design. This requires deterministic processes as well as methods for an analytical process set-up without empirical try-outs. Chemo-mechanical polishing is typically applied for pre-polishing step, which aims for smoothing the surface with moderate shape correction. But due to kinematic effects the spiral-polishing process often shows changes in the radius of curvature, which are right now corrected by empirical try-outs and iterative corrections. This paper suggests an analytical tool for the compensation of these effects and contributes doing so to an efficient pre-polishing of aspheres. A mathematical model calculates the local distribution of material removal. It is based on Preston's equation and takes into account the influence of the major input parameters, such as feed rate, spindle revolutions and spot size. The given results show a significant reduction in shape deviation applying this methods compared to a polishing process without any compensation

Краткий обзор балансирующих устройств активного типа

Balancing active type scheme was shown. Self-balancing device's classification was reported. Keynotes were explored of each mechanism. Mechanism's developing was trained to moving time

Риски в сфере оказания логистических услуг при транснациональных транспортировках

Риски в сфере оказания логистических услуг при транснациональных транспортировках необходимо идентифицировать и минимизировать на стадии подготовки товарной партии к транспортировке; освещены этапы организации транснациональных транспортировок и возникающие на каждом этапе риски, а также способы их минимизации; проанализирована судебная практика для определения наиболее распространённых видов риска при оказании логистических услуг.Risks in the field of providing logistic services for transnational transportation should be identified and minimized at the stage of preparation of the goods lot for transportation; the stages of organization of transnational transportation and the risks arising at each stage, as well as ways to minimize them, are covered; the court practice is analyzed to determine the most common types of risk in the provision of logistics services

Реструктуризация предприятия (на примере ООО «Передвижная механизированная колонна-Томь»)

В процессе исследования определено экономическое содержание процесса реструктуризации предприятия; представлен механизм реализации реструктуризации предприятий; охарактеризованы основные методы оценки эффективности процесса реструктуризации предприятий; проводилась оценка финансового состояния ООО «Передвижная механизированная колона – Томь»; предложен план реструктуризации ООО «Передвижная механизированная колона – Томь» с оценкой его эффективности.The study defined economic content of the enterprise restructuring process; The mechanism of the implementation of the restructuring of enterprises; It describes the main methods for evaluating the effectiveness of the process of restructuring enterprises; evaluated the financial condition of Limited Liability Company «PMK – Tom'»; proposed restructuring plan of Limited Liability Company «PMK – Tom'» with the evaluation of its effectiveness

Динамический структурный фактор для плотной квазиклассической плазмы

Исследованы и проанализированы динамические структурные факторы для плотной квазиклассической плазмы на основе псевдопотенциала, учитывающего эффект дифракции и коллективные эффекты в широком диапазоне температур.The dynamical structure factor for dense semiclassical plasma, which takes into account the diffraction effect in a wide range of densities and temperatures was investigated

Исследовательская деятельность эколого-биологической направленности в НОУ "Эврика" - эффективное средство профессиональной ориентации учащихся

В статье научно-исследовательская деятельность эколого-биологической направленности старшеклассников НОУ "Эврика" г. Нижнего Новгорода рассматривается как одна из значимых инновационных форм профессионального самоопределения. Материалом исследования послужил анализ программ конференции городского научного общества учащихся "Эврика" и судьбы выпускников данного общества. Отмечена тенденция роста популярности эколого-биологических исследований среди старшеклассников г. Нижнего Новгорода и успешное вхождение в профессию выпускников научного общества учащихся.In the article, the research activity of the ecology and biology of senior pupils of the scientific society of the pupils "Eureka" in Nizhny Novgorod is considered as one of the significant innovative forms of professional self-determination. The material of the study was the analysis of the programs of the conference of the city scientific society of the students "Eureka" and the fate of the graduates of this society. The tendency of growth of popularity of ecological and biological researches among senior pupils of Nizhny Novgorod and successful entry into the profession of graduates of the scientific society of students is noted

Precision glass molding. An integrative approach for the production of high precision micro-optics

Miniaturization and integration are the dominating factors for the success of numerous optical devices. Conventional manufacturing processes for the fabrication of precise glass optics by means of grinding and polishing cannot cope the increasing demands in terms of precision, volume and costs. Here, precision glass molding is the enabling technology to meet these demands of the future optical products and applications. Since the market requests further miniaturization and integration of the micro optical components the possession of the entire sequence of processes is absolutely essential. With the accomplished and ongoing developments at the Fraunhofer IPT, the replication of double-sided (a)spherical and (a)cylindrical glass lenses with form accuracies of < 150 nm as well as lens arrays and even freeform optics could be realized. Therefore, a sequence of processes needs to be passed. The FEM-simulation of the molding process which was driven to a point capable to sim ulate even the molding of freeform optics is the first process step. Further on, new mold design concepts were generated to enable the replication of free formed optics. The research works focusing on the mold manufacturing led to sophisticated grinding process strategies able to realized complex mold geometries such as lens arrays. With regard to the coating of the molds, proceedings were developed assuring a defect free and uniform coating which enables the longevity of the molds and therewith helps reducing the final costs per lens. Thus, the precision glass molding becomes more and more interesting even for highly complex mid volume lots, characteristic for European or US optics manufacturer