The decision on occupations of production tasts with application a case technology

In article are considered purpose, essence case-technology and his (its) methods of the teaching in engineering graphВ статье рассмотрены сущность кейс-технологии и методика её преподавания в инженерной график

Case-technology as a means of development of technical thinking of students on engineering schedule

Рассмотрена актуальность развития технического мышления студентов при обучении инженерной графикеIn the article the urgency of development of technical thinking of students when teaching engineering graphic

Education throughout all life: readiness of a graduator to professional activity in a changing conditions of production

The article deals with the concept, essence and features of e-learning in the system of continuous vocational education. The experience of the college with the e-learning system "Universarium" is describedВ статье рассмотрены понятие, сущность и особенности электронного обучения в системе непрерывного профессионального образования. Описан опыт работы колледжа с системой электронного обучения «Универсариум

CASE TECHNOLOGY AS A MEANS OF FORMING COMMON COMPETENCIES IN ENGINEERING GRAPHICS

The article discusses the use of case technologies in the study of engineering graphics, and indicates its role in the formation of General competencies.В статье рассматривается использование кейс-технологий при изучении инженерной графики, указана её роль в формировании общих компетенций

Structural features of Ni-Cr-Si-B materials obtained by different technologies

This study considers the structural features of Ni-Cr-Si-B (Ni - base; 15.1 % Cr; 2 % Si; 2 % B; 0.4 % C) materials obtained by different methods. The self-fluxing coatings were deposited by plasma spraying on the tubes from low carbon steel. Bulk cylinder specimens of 20 mm diameter and 15 mm height were obtained by spark plasma sintering (SPS). The structure and phase composition of these materials were investigated by optical microscopy (OM), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray diffractometry (XRD). The major phases of coatings and sintered materials are [gamma]-Ni, Ni[3]B, CrB and Cr[7]C[3]. We demonstrate that the particle unmelted in the process of plasma spraying or SPS consist of [gamma]-Ni-NEB eutectic and also CrB and Cr[7]C[3] inclusions. The prolonged exposure of powder to high temperatures as well as slow cooling rates by SPS provide for the growth of the structural components as compared to those of plasma coatings materials. High cooling rates at the plasma spraying by melted particles contribute to the formation of supersaturated solid solution of Cr, Si and Fe in [gamma]-Ni. The structure of the melted particles in sintering material has gradient composition: the core constituted of Ni grains of 10 μm with [gamma]-Ni-Ni[3]B eutectic on the edges. The results of the experiment demonstrate that the sintering material has a smaller microhardness in comparison with plasma coatings (650 and 850 MPa, respectively), but at the same time the material has higher density (porosity less than 1 %) than plasma coatings (porosity about 2.. .3 %)

Investigation of the structure and microhardness of Mo-Fe-C coatings obtained by the electron beam injected in the atmosphere

In this work 'Mo-Fe-C' coatings fabricated on medium carbon steel by non-vacuum electron beam cladding were investigated. The structure of coatings and transition zones were studied by scanning electron microscopy (SEM). It was shown that an increase of Fe percentage in the cladding mixture led to a decrease of the eutectic volume fraction in the coating and was accompanied by the formation of the gradient structure between the coating and a substrate material. Measurements of microhardness in the cross section of samples revealed that the cladding of a 'Mo-C powder mixture contributed to a 4.5-fold increase of microhardness

Investigation of the structure and microhardness of Mo-Fe-C coatings obtained by the electron beam injected in the atmosphere

In this work 'Mo-Fe-C' coatings fabricated on medium carbon steel by non-vacuum electron beam cladding were investigated. The structure of coatings and transition zones were studied by scanning electron microscopy (SEM). It was shown that an increase of Fe percentage in the cladding mixture led to a decrease of the eutectic volume fraction in the coating and was accompanied by the formation of the gradient structure between the coating and a substrate material. Measurements of microhardness in the cross section of samples revealed that the cladding of a 'Mo-C powder mixture contributed to a 4.5-fold increase of microhardness

Method for Simplified Simulation of the Pseudo-Viscosity of the Flows with Solid Particles

The short review of the solid phase pseudo-viscosity CFD-simulation methods is presented. The simplified method based on Einstein's equation, experimental data approximation, and the multiphase mixture model for the solid phase pseudo-viscosity simulation is proposed. The results of the experimental verification of the proposed method are presented, its terms of use are determined. © Published under licence by IOP Publishing Ltd

Dynamics of endothelial function indexes in patients with post-Covid syndrome using a combination drug of ethylmethylhydroxyperidine succinate/vitamin B6

Aim: to evaluate endothelial function in patients after COVID-19 before and after treatment with combination drug of ethylmethylhydroxyperidine succinate (EMHPS)/vitamin B