Intensification of heat transfer during spinodal decomposition of a superheated aqueous oligomer solution

The heat conduction of an aqueous solution of polypropylene glycol in the region of stable and unstable states was studied by the method of pulse isothermal impact on a substance with a characteristic time of 100 ms. It has been shown that the short-Term superheating of a homogeneous solution not only above the liquid-liquid equilibrium temperature (low critical solution temperature), but also above the diffusion spinodal is fundamentally possible. The negative character of the deviation of the heat conduction of a solution from the additive law calculated from the heat conduction of the pure components at a given temperature was revealed. The signs of manifestation of spinodal decomposition accompanied by a significant intensification of heat transfer were found. © Published under licence by IOP Publishing Ltd

THERMOPHYSICAL MONITORING OF MOISTURE IN HYDRAULIC LIQUIDS

The technique of fast thermal control has been applied for the examination of samples of hydraulic liquids with a water content from 0,1 to 3,5 %. Appropriate operating modes of the measuring device were found.Работа выполнена в рамках проекта РФФИ № 16-08-00381 и проекта комплексной программы Уральского отделения РАН № 18-2-2-3

THERMAL CONDUCTIVITY OF OVERHEATED BINARY SOLUTIONS

In this work we investigate the following hypothesis: placement of a second substance in the pure system leads to the appearance of additional thermal resistance. In order to prove it, a we used temperature plateau method. By means of which, we determined the values of the additional thermal resistance of the following solutions: isopropanol-water, isopropanol-ethylene glycol, isopropanol-triethylene glycol, and triethylene glycol-water. Experiments were carried out at atmospheric pressure and temperatures of the samples up to 180 °С

Электроинструмент для введения спиц в кость

Техническое решение относится к медицинской технике, в частности к инструменту с электрическим приводом для проведения травматологических и ортопедических хирургических операций. Предназначено для введения в кость армирующих спиц или упруго гибких стержней путем периодического ударного воздействия

Typological classification of health groups of schoolboys with comorbidity and behavioural risk factors

The purpose of study is estimation of a state of health by typological classification Complex examination of 142 girls and 116 boys in the age of 14-17 years has shown, that 2,1 % of girls and 11,2% of boys have la type of the status of health without risk factors. Premorbid types (lla, lib, lie) were in 20,4% and 25,9% accordingly. Among schoolboys persons with monomorbid (40,9% and 43,0 %) and bimorbid (23,9% and 12,1%) types of the status of health (Ilia and lllb) prevailed. Comorbidity is revealed in 68,3% of girls and 52,3% of boys. A prevailing pathology were dysplasia of connective tissue.Цель исследования оценить состояние здоровья подростков в соответствии с типологической классификацией. Комплексное обследование 142 девонек и 116 мальчиков в возрасте 14-17 лет показало, что 2,1 % девочек и 11,2% мальчиков относятся к la типу статуса здоровья без факторов риска. Преморбидные типы (На, НЬ, Не) были в 20,4% и 25,9% соответственно. Среди школьников преобладали лица с мономорбидным (40,9% и 43,0%) и биморбидным (23,9% и 12,1 %) типами статуса здоровья (Ша и lllb). Коморбидная патология выявлена в 68,3% девочек и 52,3% мальчиков. Преобладающей патологией была дисплазия соединительной ткани

THERMAL CONDUCTIVITY OF FLUORINATED SOLUTIONS OF UNSATURATED HYDROCARBONS WITH A POSITIVE EXCESS VOLUME

Solutions of perfluorinated compounds and unsaturated hydrocarbons are highly nonideal systems. A decrease in the thermal conductivity of solutions relative to their additive values in the entire concentration range and their correlation with the values of excess volumes were found.Работа выполнена при финансовой поддержке РФФИ, грант № 19-38-90075