Search

The trial approbation of the various technological circuits rolling-draged, has shown, that most efficient in conditions of rolling laboratory of Institute of black metallurgy is the technological circuit calibring of tapes with use of a priciple of constant width in a combination to transitions in vertical rolls for prevention current of metal in backlashes of calibre and formation lateral salvage.

There are examined the different technological processes of endless rolling, stipulating for jump welding of slugs into endless string and direct alignment of the processes of continuous casting of slugs and rolling. There are marked the successes of foreign firms on using of the process of endless rolling in the foundry-rolling units.

There are examined the peculiarities of the process of spiral winding for production of steel piston rings at using of new constructions of spiral-winding mashine-tools, working on one-thrust and two-thrust schemas of winding.

Background. Introduction of new methods of diagnosing functional disorders of the upper gastrointestinal tract into children’s practice will reveal the true cause of changes in esophageal motility in its various pathologies, which will significantly change the treatment tactics, since the selection of therapy will be based on the pathogenetic mechanisms of disease development.Our aim was to highlight the capabilities and benefits of high-resolution mano-impedancemetry in comparison with esophagogastroduodenoscopy, which has been studied and used in pediatric practice for a long time, and to prove that only due to a new method for diagnosing esophageal motility disorders, it is possible to determine the cause of dyspeptic complaints in children.Patients and Methods. The results of our own examination of children aged from 7 to 17 years 11 months (n = 23) with clinical manifestations of functional disorders of the upper gastrointestinal tract have been presented.Results. According to the mano-impedancemetry data, it has been found that the time of the substrate in the esophagus (p

Esophageal strictures are the most common complications of bullous epidermolysis in children. Strictures cause the development of dysphagia that prevents oral alimentation and receipt of an adequate amount of nutrients that is accompanied by a violation of nutritional status, weight loss, and delayed physical development of a child. Disturbed swallowing can also cause aspiration syndrome, pneumonia, and airway obstruction. To eliminate dysphagia and reduce the risk of complications, it is necessary to restore esophageal patency. The article describes the results of X-ray with assisted balloon dilatation in 19 children with bullous epidermolysis and dysphagia. It is shown that this method of esophagus recanalization allows to effectively and safely restore oral alimentation of children already in the first day after intervention with a gradual expansion of the diet.

Запропоновано прогнозуюче релейно-векторне регулювання статорного струму для асинхронного електропривода з матричним безпосереднім перетворювачем частоти, для якого методом імітаційного моделювання проведено дослідження електромеханічних та електромагнітних процесів вказаного електропривода в статичних та динамічних режимах.

Запропоновано розрахунки споживаної потужності насосних установок сільськогосподарського призначення для трьох різних способів керування даними установками: з дроселюванням, з водонапірною баштою та частотним керуванням електричного двигуна насоса. Виконано кількісне порівняння енергетичних та економічних показників розглянутих варіантів.