Влияние исходной термической обработки на особенности ультрамелкозернистой структуры, сформированной в стали 06МБФ методом кручения под давлением

A homogeneity of strength properties (microhardness) through the specimens and the peculiarities of an ultrafine-grained structure produced in low-carbon steel Fe-Mo-Nb-V-C by cold high-pressure torsion were studied depending on initial heat treatment of steel. As a result of high-pressure torsion, the microhardness of steel was increased up to 6,0-7,7 GPa (in the middle part of disk radii), and the mean (sub)grain size was reduced to ?91-100 nm

Оценка влияния векового хода температур на земной поверхности на геотермический режим материнских отложений южной палеоклиматической зоны Западной Сибири

Цель исследований - оценить влияние палеоклимаического хода температур на земной поверхности на геотермический режим материнских отложений баженовской свиты юга Западной Сибири, на примере Верх-Тарского месторождения Новосибирской области. Оценка влияния векового хода температур выполнена на основе анализа результатов палеотемпературного моделирования. Использование при реконструкциях «местного» векового хода температур, построенного для южной палеоклиматической зоны, уточняет показатель плотности ресурсов

Разработка автоматизированной системы управления параметрами микроклимата производственного помещения

Состояние здоровья человека, его работоспособность зависят от микроклимата в помещении. В данной работе проводилась разработка системы поддержания параметров микроклимата в промышленном помещении на базе логического контроллера ОВЕН ПЛК 160. Была разработана математическая модель системы и рассчитаны параметры настройки регулятора. Также проводились исследования системы на внешнее воздействие.The state of a person's health, his performance depends on the microclimate in the room. In this work, the development of a system for maintaining the parameters of the microclimate in an industrial room based on the OWEN PLC 160 logic controller was carried out.A mathematical model of the system was developed and the parameters of the controller settings were calculated. The system was also studied for external effects

Cobalt(II) membrane-extraction by DP-8R/Exxsol D100 using pseudo-emulsion based hollow fiber strip dispersion (PEHFSD) processing

The transport of cobalt(II) from acidic sulphate solutions through PEHFSD was investigated using the extractant DP-8R in Exxsol D100. The acidic feed solution containing Co(II) was passed through the tube side, and pseudo-emulsions of DP-8R/Exxsol D100 and sulphuric acid was passed through the shell side in counter-current mode, using a single microporous hydrophobic polypropylene hollow fiber contactor for extraction and stripping. In PEHFSD the aqueous strip (sulphuric acid) solution was dispersed in the organic membrane solution in a reservoir tank with an impeller stirrer to form a strip dispersion. This pseudo-emulsion phase is circulated from the tank to the membrane module to provide a constant supply of the carrier solution to the membrane micropores. Several hydrodynamic and chemical parameters, such as variation in feed pH (3–7), cobalt concentration in feed (0.17–1.7 10 3 M), carrier concentration (0.16–1.28 M), etc., were investigated. Mass transfer modelling was performed and the validity of the model was evaluated with experimental data. Moreover, the system was applied in the cobalt purification of synthetic lithium solutions derived from the processing of rechargeable batteries, with cobalt/lithium separation factor values around 25.To the CSIC (Spain) for support. Dr. I. Garcia-Diaz acknowledged the research contract JAEDOC_09_00893 received from CSIC (Spain).Peer reviewe

Chemical composition of soils and of vegetation of roadside phytocenosis of Tobolsk

Article presents the results the study of anthropogenic roadside phytocenoses city of Tobolsk. Studied the state of herbaceous vegetation. As a result of work done carried out: a) the selection of sites with anthropogenic impact; b) description of the composition of the grass; c) defines the main pollutants (Cu, Cd, Co, Pb, Cr, As, Ni) and their accumulation in the soil and total biomass of observing sites. Comparative analysis, obtained by different methods, will serve as the basis for the development of a comprehensive evaluation system. The results can be used to assess the extent of human impact on ecosystems and plant communities roadside predict the degree of likely changes in them. Forecast results will determine the necessary system of measures aimed at improving the sustainability of plant communities