Project management in academic physical education system: benefits analysis

Objective of the study was to analyze benefits of a project management technology for the modern academic physical education syste

Academic physical education benefits for faculty/ research/ management personnel’s progress agendas: survey and analysis

Objective of the study was to survey and analyze the academic physical education service benefits for the faculty/ research/ management staf

Academic physical education system: questionnaire survey to rate student satisfaction

Objective of the study was to analyze the student satisfaction with the academic physical education servic

GTO complex implementation technology for educational system

The study analyzes practical experience of the GTO Complex implementation project at Belgorod State National Research University with a special emphasis on the GTO Complex implementation process control mechanism including the following modules: progress test, regulatory, design and corporate management module

Physical properties of thermoelectric zinc antimonide using first-principles calculations

We report first principles calculations of the structural, electronic, elastic and vibrational properties of the semiconducting orthorhombic ZnSb compound. We study also the intrinsic point defects in order to eventually improve the thermoelectric properties of this already very promising thermoelectric material. Concerning the electronic properties, in addition to the band structure, we show that the Zn (Sb) crystallographically equivalent atoms are not exactly equivalent from the electronic point of view. Lattice dynamics, elastic and thermodynamic properties are found to be in good agreement with experiments and they confirm the non equivalency of the zinc and antimony atoms from the vibrational point of view. The calculated elastic properties show a relatively weak anisotropy and the hardest direction is the y direction. We observe the presence of low energy modes involving both Zn and Sb atoms at about 5-6 meV, similarly to what has been found in Zn4Sb3 and we suggest that the interactions of these modes with acoustic phonons could explain the relatively low thermal conductivity of ZnSb. Zinc vacancies are the most stable defects and this explains the intrinsic p-type conductivity of ZnSb.Comment: 33 pages, 8 figure

Chemistry for Sustainable Development 13 (2005) 603-610 Purification of Drainage Water from Dumps of Solid Household Wastes Using Calcium Oxide for Premembranous Treatment

Abstract Potentiality to use the process of treatment of drainage water from the dumps of solid household waste by calcium oxide as a method of premembranous preparation has been studied. The flow diagram has been developed for purification of drain age water with processing of the resulting slimes into marketable products. The suggested technology assumes the re-use of the obtained products in this technological process and their salvaging within other branches of the n ation al economy. Technological dependences of the variation in the baromembrane processes parameters after a prior reagent purification of drain age water from dumps have been obtained. Tests of a semiindustrial setup have been performed under field conditions

Segregated Network Polymer Composites with High Electrical Conductivity and Well Mechanical Properties based on PVC, P(VDFTFE), UHMWPE, and rGO

The formation of a segregated network structure (wittingly uneven distribution of a filler) is one of the most promising strategies for the fabrication of electrically conductive polymer composites at present. However, the simultaneous achievement of high values of electrical conductivity with the retention of well mechanical properties within this approach remains a great challenge. Here, by means of X-ray photoelectron spectra (XPS), near-edge X-ray absorption fine structure (NEXAFS) spectra, scanning electron microscopy (SEM), dielectric spectroscopy, and compression engineering stress-strain curve analysis, we have studied the effect of a segregated network structure on the electrical conductivity and mechanical properties of a set of polymer composites. The composites were prepared by applying graphene oxide (GO) with ultralarge basal plane size (up to 150 μm) onto the surface of polymer powder particles, namely, poly(vinyl chloride) (PVC), poly(vinylidene fluoride-co-tetrafluoroethylene) (P(VDF-TFE)), and ultrahigh-molecular-weight poly(ethylene) (UHMWPE) with the subsequent GO reduction and composite hot pressing. A strong dependence of the segregated network polymer composites' physical properties on the polymer matrix was demonstrated. Particularly, 12 orders of magnitude rise of the polymers' electrical conductivity up to 0.7 S/m was found upon the incorporation of the reduced GO (rGO). A 17% increase in the P(VDF-TFE) elastic modulus filled by 1 wt % of rGO was observed. Fracture strength of PVC/rGO at 0.5 wt % content of the filler was demonstrated to decrease by fourfold. At the same time, the change in strength was not significant for P(VDF-TFE) and UHMWPE composites in comparison with pure polymers. Our results show a promise to accelerate the development of new composites for energy applications, such as metal-free supercapacitor plates and current collectors of lithium-ion batteries, bipolar plates of proton-exchange membrane fuel cells, antistatic elements of various electronic devices, etc. © 2020 American Chemical Society

Effective Models for the Specular Color Constituent Computing

This paper describes the alternative BRDF (Bidirection reflectance distribution function) models. Main emphasis was done on the models development with simple hardware implementation, based on formulas with low computation complexity. The results, achieved by authors, testify the increase of BRDF approximation accuracy in more than 22 times in comparison with most widespread solution

Закрытие обширного дефекта мягких тканей опорной поверхности стопы с помощью васкуляризованного аутотрансплантата прямой мышцы живота

In the given clinical example, where the patient is a child with an extensive degloving wound of the footplate of the right (not the left) foot, it is demonstrated the possibility of the rehab of the foot's support ability by the method of microsurgical muscle grafting combining with full-thickness skin autodermoplasty. The recovery of support ability of extremity with defects in the tissues of the plantar surface is an actual problem of modern surgery. When there are small and medium-sized defects, it can be used local and regional flaps, but when the defects are extensive, it is needed to create soft tissues anew, and they must be able to withstand multiple physical stresses. In the given clinical example, where the patient is a child with an extensive degloving wound of the footplate of the left foot, it is demonstrated the possibility of the rehab of the foot's support ability by the method of microsurgical muscle grafting combining with full-thickness skin autodermoplasty. В приведенном клиническом примере, где пациентом является ребенок с обширной скальпированной раной опорной поверхности правой, а не левой стопы, продемонстрирована возможность восстановления опорной функции стопы при помощи метода микрохирургической пересадки мышечного аутотрансплантата в сочетании с полнослойной аутодермопластикой. Восстановление опороспособности стопы при дефектах тканей подошвенной поверхности является актуальной проблемой современной хирургии. Если при повреждениях небольших и средних размеров возможно применение местных и регионарных лоскутов, то наличие обширного дефекта требует формирования новых полноценных мягких тканей, способных выдержать постоянные механические нагрузки. В приведенном клиническом примере, где пациентом является ребенок с обширной скальпированной раной опорной поверхности левой стопы, продемонстрирована возможность восстановления опорной функции стопы при помощи метода микрохирургической пересадки мышечного аутотрансплантата в сочетании с полнослойной аутодермопластикой.