Покращення основних показників трансформаторів з витими нероз’ємними магнітопроводами шляхом зміни формування кругових витків обмотки

Introduction. With the adoption of standards to reduce losses in transformers it is necessary to change the design of transformers that remain unchanged. Further energy saving is possible with the use of non-traditional technical solutions for the improvement of transformers. Problem. In order to reduce idle losses, the curved magnetic circuits of power transformers are carried out in the form of low-volume circuits. Windings are injected into assembled magnetic conductors by shuttle machines. The shuttle of windings provides technological gaps in winding windows, which results in an increase in size, metal capacity and losses. Goal. Rationale for transformer performance improvement by excluding process gaps in winding windows. Methodology. The definition of the change in transformer indicators is performed using optimization functions of the dimensionless indicators of the technological level. The adequacy of the functions is confirmed by the calculation of the mass of the electromagnetic system and the losses of the transformer. The figures of the compact analogue are calculated from the named serial analogue. Results. The result is a reduction in mass and a loss in the compactness of the transformer. Originality. The improvement of the indicators and the simplification of the winding technology are provided by a change in the design of insulating frames of winding coils. Winding on the rods is ensured by rotating the outer part of the composite insulating frame. Practical significance. Replacement the design of the windings of transformer with power of 40 kVA of 1000 V voltage class with a spatially twisted, small-dimensional magnetic conductor on a compact analogue leads to a reduction in mass and overall dimensions by 15 % and (17-18) %. Efficiency increases by 0.3 %.Виконано аналіз конструктивно-технологічних особливостей електромагнітних систем трансформаторів з витими нероз’ємними магнітопроводами і круговими утворюючими контурами стрижнів та обмоткових витків. Запропоновано конструкцію обмоткової котушки з зовнішньою рухомою та внутрішньою нерухомою частинами опорно-ізоляційного каркасу та заміну вмотки витків на технологію намотки. Показано, що використання замість човникової вмотаної конструкції виконання обмотки з зовнішньою частиною ізоляційного каркаса, що обертається, призводить до поліпшення масогабаритних і енергетичного показників трансформатора

О СОСТОЯНИИ ЗДРАВООХРАНЕНИЯ В РЕГИОНАХ СИБИРИ И ВЫПОЛНЕНИИ ПОСЛАНИЯ ПРЕЗИДЕНТА РОССИЙСКОЙ ФЕДЕРАЦИИ ФЕДЕРАЛЬНОМУ СОБРАНИЮ РОССИЙСКОЙ ФЕДЕРАЦИИ ОТ 12 ДЕКАБРЯ 2013 ГОДА

The aim of the study was to identify the key problems of regional health services in the Siberian Federal district and justification of the priority directions of their decision. For the first time using the method of expert estimations conducted a study of health problems in the Federal district, identified key issues, as well as justifies the priority directions of their decisions. The study was conducted on the basis of statistical materials of the health authorities of the regions of Siberian Federal district, as well as expert assessments. Identified key health issues and priorities of their decision. Based on the systematic work of the expert community and across government levels defined key for the regions of Siberia health problems and justify the priority directions of their solutions tailored to focus efforts in the social sphere, which will allow to coordinate policies in the health sector on the territory of the Siberian Federal district, which in turn, will increase its effectiveness.Целью исследования было определение ключевых проблем регионального здравоохранения в Сибирском федеральном округе (СФО) и обоснование приоритетных направлений их решения. Впервые с использованием метода экспертных оценок проведено изучение проблем здравоохранения в федеральном округе, выявлены ключевые проблемы, а также обоснованы приоритетные направления их решения. Исследование проведено на основе статистических материалов органов управления здравоохранением регионов СФО, а также экспертных оценок. Определены ключевые проблемы здравоохранения и приоритетные направления их решения. На основе системной работы экспертного сообщества и органов государственного управления разных уровней определены ключевые для регионов Сибири проблемы здравоохранения и обоснованы приоритетные направления их решения с учетом фокусных усилий в социальной сфере, что позволит скоординировать политику в сфере здравоохранения на территории СФО, что, в свою очередь, позволит повысить ее эффективность

СПЕЦІАЛЬНІ ПИТАННЯ МАТЕМАТИЧНОГО ОПИСУ ТА МОДЕЛЮВАННЯ ДИНАМІКИ ЕЛЕКТРОПРИВОДІВ ДОПОМІЖНОГО ОБЛАДНАННЯ АВТОМОБІЛІВ

Presented the mathematical model of automobile electric ventilator, realized as independent excitation DC motor. Obtained model uses accessible technical references data and provides research of transient and steady state of typical on-board automobile equipment.Представлено математичну модель автомобільного електровенилятора, реалізованого як двигун постійного струму незалежного збудження. Отримана модель використовує доступні довідникові дані та забезпечує дослідження перехідних та усталених режимів типового бортового автомобільного устаткування

Venous thromboembolic complications

The article is devoted to the current issues of diagnosis of deep vein thrombosis of the lower extremities, provides updated recommendations on the choice of drugs in the treatment of deep vein thrombosis of the lower extremities in various clinical situation

Functional bread enreached with regional bioactive food additives

The scientific work presents materials of theoretical and experimental substantiation of the use of regional bioactive food additives, namely wild plants of the legume family (Fabaceae), permitted for use in the food industry: sweet clover (Melilotus officinalis), red meadow clover (Trifolium pratense), white acacia (Robinia pseudoacacia) in the production of functional foods [1]. Experimental studies of the safety indicators of food wild-growing plants (FWP) have been carried out. It was found that the studied FWP growing in ecologically clean areas of the North Ossetia-Alania are distinguished by a low mass fraction of toxic substances. Two fractions of cellulose were investigated: 1 - water-soluble (pectic acid, pectin, methylcellulose); 2 - water-insoluble (protopectin, cellulose, hemicellulose). The increased content of dietary fiber in WGP powders has been established, corresponding to the physiological norms of satisfying the daily requirement for FWP and, in this regard, indicating the expediency of using functional food in formulations for the prevention and treatment of diabetes mellitus, obesity, and atherosclerosis. The sorption capacity of WGP powders with respect to lead has been investigated. All studied powders of WGP modification products are characterized by high sorption capacity. The technologies of flour products with the addition of FWP powders have been developed. The results of clinical and preclinical studies of the developed functional bread show a corrective effect of glycemic blood parameters, as well as a decrease in the lead content in the blood of fed laboratory rat pups by almost two times, compared with the control