ПРИМЕНЕНИЕ МЕТОДА САМОРАСПРОСТРАНЯЮЩЕГОСЯ ВЫСОКОТЕМПЕРАТУРНОГО СИНТЕЗА ДЛЯ ПОЛУЧЕНИЯ ПОРИСТЫХ ВАКУУМНЫХ ВСТАВОК ПЛАНШАЙБ ОБОРУДОВАНИЯ ЭЛЕКТРОННОГО МАШИНОСТРОЕНИЯ

There are given the results of research the process of receiving by method of self-extending high-temperature synthesis of porous vacuum inserts of the faceplates used by production of semiconductor silicon plates at the enterprises of electronic mechanical engineering.Приведены результаты исследования процесса получения методом самораспространяющегося высокотемпературного синтеза пористых вакуумных вставок планшайб, используемых при производстве полупроводниковых кремниевых пластин на предприятиях электронного машиностроения

КЕРАМИЧЕСКИЕ НАНОПОКРЫТИЯ НА СФЕРИЧЕСКИХ ПОРОШКАХ: АЛЬТЕРНАТИВНЫЙ СПОСОБ ПОЛУЧЕНИЯ ПОРИСТЫХ ПОРОШКОВЫХ МАТЕРИАЛОВ

A technology has been developed to obtain porous powder materials on the basis of spherecal powder particles of 12Х18Н10T сorrosion-resistant steel by technological coating deposition on them –condensate from layered and composite Si and (Si + C) or Si and (Mo + Si) nano-layers. Their deformation at points of spherical particles contact creates press forming conditions with sufficient strength rate at pressure below yield point of steel powder (below 200 MPa). The subsequent sintering occurring  with an exothermic reaction in the coating ensures particle sintering in their local heating within 1100–1200 °С temperature range.Разработана технология получения пористых порошковых материалов на основе сферических частиц порошка коррозионностойкой стали 12Х18Н10Т путем нанесения на них технологических покрытий – конденсата из слоистых и композиционных нанослоев Si и (Si + С) или Si и (Мо + Si), деформация которых в точках контакта сферических частиц при давлении ниже предела текучести порошка стали (ниже 200 МПа) создает условия формования прессовки с достаточным уровнем прочности, а последующее реакционное спекание, протекающее с экзотермической реакцией в покрытии, обеспечивает спекание частиц при локальном их разогреве в диапазоне температур 1100–1200 оС.

Tata perayaan pemberkatan rumah

80 hlm.; 19 cm

Magnetresonanstomografins roll i tidig upptäckt av bröstcancer hos kvinnor som är BRCA1 eller BRCA2 genbärare

Validerat; 20130207 (global_studentproject_submitter

Value chain analysis of smallholder milk producer in West Hararghe Zone, Ethiopia

The study was aimed at analyzing milk value chains in West Hararghe zone with 140 producers were randomly selected from list of dairy producer kebeles. Meanwhile, 30 traders from different markets and 30 consumers in Chiro, Bedessa Gemechis and Mieso towns were selected and interviewed. Heckman two stage models were applied to identify determinants of milk market participation and volume of milk supply to the market. The results shows among those variables hypothesized to affect milk market participation decision, distance to the nearest market, crop income and age of household head&nbsp; were negatively and significantly affecting participation decision and also livestock unit is affect participation decision significantly and positively. Land size, improved dairy cows, livestock unit were significantly and positively influencing the value of milk marketed. The value chain analysis revealed that the major value chain actors are input suppliers, producers, collectors, rural and urban wholesalers, retailers, cafes and consumers. It is also found that milk passes through several intermediaries with value added products (boiled milk and yoghurt) before reaching the ultimate users. Therefore, policies aiming at increasing producer’s provision of modern inputs, number of milk cows and improving livestock production of milk cows and change of their attitudes towards milk production and processing, participating to dairy market were recommended to accelerate milk value chains development in the study area.</p

Application of the method of self-extending high-temperature synthesis for receiving porous vacuum inserts of faceplates of electronic mechanical engineering equipment

There are given the results of research the process of receiving by method of self-extending high-temperature synthesis of porous vacuum inserts of the faceplates used by production of semiconductor silicon plates at the enterprises of electronic mechanical engineering