Shaping of cutting part of angle milling cutters with nonzero geometry

Angle milling cutters with zero and nonzero geometry have been analyzed, as well as their advantages and disadvantages. Analysis of methods of treating cutting part of angle cutters has been made. The shaping process of cutting parts of angle milling cutters with non-zero geometry has been discussed in detail. Issues of designing these angle cutters have been considered and dependencies have been shown for defining their geometric parameters as well as the parameters required for machine setup for manufacturing the cutters. © IDOSI Publications, 2014

Formation of initial data of the workpiece batch in simulation modelling precision forming

© Published under licence by IOP Publishing Ltd. Modern simulation model is limited to the creation of items. However, in actual production, we often have significantly more manufacturing products. In the article the question of the formation of the initial batch data is raised. This will more accurately simulate the processing of the party details

The modern methods of increase of management efficiency of small and medium businesses

The article contains the analysis of dynamics of development of the subjects of small and medium businesses in the Russian Federation. Despite the measures of the state policy of Russia in relation to the development of small and medium businesses the reduction in the number and turnover in this sphere is found out. The key factors of successful entrepreneurial activities have been analyzed. The modern methods of increase of efficiency of activities in small and medium businesses have been offered. The possibilities of receiving the state support of businesses, use of the services of business consultants and more traditional methods of management optimization - business planning, optimization of strategy and structure of an organization, receiving supplementary education in the chosen field of activities have been considered. As the most common problem for small business is the limited financial resources, we have focused on finding free or cheap ways of optimization of activities as well as opportunities for reduction of expenses in this work. One of the effective ways of increasing efficiency is the use of the modern information technologies including the cloud services. The comparative analysis of several services, offered in Russia, as well as prospects for their development has been performed. The analysis has revealed that the cloud services are still undiscovered reserves for many Russian and foreign firms

Systematization of accuracy indices variance when modelling the forming external cylindrical turning process

© Published under licence by IOP Publishing Ltd. The article considers the problem of accuracy deviation systematization for external cylindrical turning, proposed a hierarchical approach to the evaluation of these deviations, an approach to the analysis of nesting accuracy metrics, as well as, the common scheme of identification of deviations of the accuracy metrics for party billets in external machining were proposed

Fungi, Source of Biologically Active Substances with Important Application in Agricultural Fields

Eleven species (dried fruiting bodies) Fomitopsis pinicola, Cerrena unicolor, Piptoporus betulinus, Daedaleopsis tricolor, Stereum subtomentosum, Funalia trogii, Phellinus cinereus, Trametes versicolor, T. pubescens, T. gibbosa and Ganoderma applanatum were used to extract biologically active compounds (BACs) as crude fungal extracts (CFEs) in distilled water (diH2O) which was further studied to evaluate their impact on the rate of seeds germination, biosynthesis of photosynthetic pigments, biomass formation and in tomato seedlings length (Solanum lycopersicum, cv. Dubrava). The results showed that xylotrophic mushrooms are a source of potential biologically active compounds useful for agriculture. © 2022 Author(s).The work was partly supported by RFBR, Russia (Project No. 19-516-45006) and DST, India (INT/RUS/RFBR/363) and the Ministry of Science and Higher Education of the Russian Federation (Agreement No. 02.A03.21.0006)

Gravity compensation in complex plasmas by application of a temperature gradient

Micron sized particles are suspended or even lifted up in a gas by thermophoresis. This allows the study of many processes occurring in strongly coupled complex plasmas at the kinetic level in a relatively stress-free environment. First results are presented. The technique is also of interest for technological applications.Comment: 4 pages, 4 figures, final version to be published in Phys. Rev. Let

Fungi, source of biologically active substances with important application in agricultural fields

The work was partly support by RFBR, Russia (Project № 19-516-45006) and DST, India (INT/RUS/RFBR/363) and the Ministry of Science and Higher Education of the Russian Federation (Agreement № 02.A03.21.0006)

Impact of Fungal Biologically Active Substances on Plant Growth

In this study, effects of Inonotus obliquus, Fomes fomentarius, Fomitopsis pinicola and Trichaptum pergamenum extracts on plant functions have been investigated. Barley, cucumber and tomato seeds were grown in Petri dishes containing filter paper, petri dishes have been moistened with the solutions of biologically active substances from the fungal extracts from the above-mentioned fungi species; the control petri dishes were moistened with distilled water. The impact of extracts on seeds germination seedling growth, photosynthetic pigments contents, biomass formation of shoots and roots have been determined. © 2019 Author(s).The research was supported by The Ministry of Education and Science of the Russian Federation Agreement no. 02.A03.21.0006

Enhanced magneto-optic properties in sputtered Bi-containing ferrite garnet thin films fabricated using oxygen plasma treatment and metal oxide protective layers

© 2020 by the authors. Licensee MDPI, Basel, Switzerland. Magneto-optic (MO) imaging and sensing are at present the most developed practical applications of thin-film MO garnet materials. However, in order to improve sensitivity for a range of established and forward-looking applications, the technology and component-related advances are still necessary. These improvements are expected to originate from new material system development. We propose a set of technological modifications for the RF-magnetron sputtering deposition and crystallization annealing of magneto-optic bismuth-substituted iron-garnet films and investigate the improved material properties. Results show that standard crystallization annealing for the as-deposited ultrathin (sputtered 10 nm thick, amorphous phase) films resulted in more than a factor of two loss in the magneto-optical activity of the films in the visible spectral region, compared to the liquid-phase grown epitaxial films. Results also show that an additional 10 nm-thick metal-oxide (Bi2O3) protective layer above the amorphous film results in ~2.7 times increase in the magneto-optical quality of crystallized iron-garnet films. On the other hand, the effects of post-deposition oxygen (O2) plasma treatment on the magneto-optical (MO) properties of Bismuth substituted iron garnet thin film materials are investigated. Results show that in the visible part of the electromagnetic spectrum (at 532 nm), the O2 treated (up to 3 min) garnet films retain higher specific Faraday rotation and figures of merit compared to non-treated garnet films

Engineering and geological conditions of dam construction

The article presents studies of the engineering-geological conditions of dam construction, consisting of the structure of river valleys and slopes, conditions of rock occurrence, geotechnical and filtration properties of rocks, and geological conditions of the dam construction site. A classification of valley types with schemes, classification of rocks about the location of dams, and types of tectonic structure of valleys about the construction of dams are presented. Conclusions are drawn about the most favorable and unfavorable conditions for the construction of dams