Vol 8, No 3-3 (2014)
- Year: 2014
- Articles: 20
- URL: https://journals.eco-vector.com/2074-0530/issue/view/3739
Articles
5-7
Method for determination of kinetic parameters of oxidation of ground carbon materials
Abstract
The features of thermal methods for the determination of kinetic parameters of oxidation of carbon materials are considered in the article. A modified method for the determination of kinetic parameters on the basis of the quantities characterizing the steady state of a system is suggested.
Izvestiya MGTU MAMI. 2014;8(3-3):7-13
7-13
E-learning systemfor teaching the management of hard alloy producing
Abstract
The paper deals with the synthesis of e-learning system which allows to explore and to manage the process of obtaining hard alloys. The results of scientific studies of the synthesis of hard alloys based on the model of sintering of hard alloys are presented. A library of mathematical models and a system of e-learning system for management of processes of obtaining hard alloys are developed.
Izvestiya MGTU MAMI. 2014;8(3-3):14-20
14-20
Mathematical modeling of regeneration of granular filter material from petroleum
Abstract
The article is devoted to mathematical modeling of the process of regeneration of granular filter material from oil by aqueous solution of surface active agent. The regeneration process was carried out under laboratory conditions. Experimental data characterizing macrokinetics of filter regeneration have been derived from accumulation of particles of petroleum fractions carried out of the filter with a washing liquid. According to these data, kinetic curve of temporal variation of the average film thickness of contamination was plotted.
Izvestiya MGTU MAMI. 2014;8(3-3):20-24
20-24
25-31
31-34
Direction of modification of components for pyrotechnic low-gas compositions
Abstract
The article describes the superdispersed and nanostructured metal fuel, oxidants and combustion modifiers for better combustion characteristics and performance of pyrotechnic low-gas compositions. The authors studied the dependence of combustion characteristics (voltage, current, time characteristics and burning rate) of a pyrotechnic element from the nature and content of ultra-and nanoscale powders of aluminum, boron, iron oxides and copper obtained by the method of arc plasma decanting.
Izvestiya MGTU MAMI. 2014;8(3-3):35-38
35-38
Methodology for determination of mass fraction of active substance in ultraand nano-dispersed metal fuels by combustion calorimetry
Abstract
The paper considers the possibility of combustion calorimetry method for determination of mass fraction of a substance in metal fuel and shows disadvantages of methods established by the normative documentation. Method of sample preparation, conducting the experiment and the mathematical processing of measurement results are worked out. Efficiency of the developed method has been confirmed by experimental results of analysis of superdispersed and nanostructured metal fuel.
Izvestiya MGTU MAMI. 2014;8(3-3):38-43
38-43
Influence of salinity on bioconcentration and genotoxicityof heavy metals for Asteria srubens L. sea stars
Abstract
The paper provides comparative analysis of bioconcentration levels of metals in body and formation of micronuclei in cells of Asterias rubens L sea stars coelomic fluid under the influence of mixture of iron, lead, copper and cadmium in normal (25,7‰) and low salinity (21‰), as salinity can significantly affect the expression of toxic properties of substances. Low salinity increases genotoxicity of metals and disrupts the immune response. There were not observed any significant differences in the level of bioconcentration in different salinity conditions.
Izvestiya MGTU MAMI. 2014;8(3-3):43-49
43-49
49-53
Working substances of high heat pumps. Current state of affair and development trends
Abstract
The article describes working substances that meet the requirements for use in high-temperature vapor compression heat pumps, which work on the reverse Rankine thermodynamic cycle. The comparison of the thermodynamic efficiency of working substances in the temperature range of single-stage heat pump distiller was made.
Izvestiya MGTU MAMI. 2014;8(3-3):53-58
53-58
58-62
Process of production Аgrostis stolonifera l. plants, resistant to high concentrations of lead via cell engineering
Abstract
The technology of production Agrostis stolonifera lawn grass resistant to salts of lead was developed. For the production of plants tolerant to lead the direct selection circuit was used. This circuit compromises culturing the callus over two passages in the modified MS medium with 650 mg/l of lead, regeneration and rooting plants on MS medium with 650 mg/l of lead. The obtained plants remained high decorative quality at high concentrations of lead and may be used as starting shapes upon receipt of varieties tolerant to this metal.
Izvestiya MGTU MAMI. 2014;8(3-3):62-65
62-65
Production management model on the principles of environmental safety and results of its testing
Abstract
The substantiation of the need for environmental policy in the management of industrial activity was proposed. There were proposed the model and the basic tools of enterprise management on the principles of environmental safety. Comparative assessment indicators were summarized, system for calculating environmental and economic efficiency was identified. All the results work when starting a new production and during subsequent modernization. Recommended innovations were tested at industrial plant. Analysis of the results confirmed the effectiveness of the use of innovative methods of management. Numerical indicators that determine economic impact by improving manufacturing operations in the monetary and material terms are shown.
Izvestiya MGTU MAMI. 2014;8(3-3):65-70
65-70
Universal algorithm of preparation of soil samples for determination of hazardous chemicals
Abstract
Hazardous chemicals (HC) with enterprises into the soil and accumulate it. As a consequence, fertility of contaminated soil is reduced and the risk of chronic and serious diseases increases of population when using for agricultural purposes. When the chemical analysis on content of HC in soil the most time consuming is the operation of sample preparation, the implementation of which depends on availability of appropriate methodologies, and on staff qualification. To select the method of argumentation and workflow preparation of soil samples, there is developed algorithm allowing preparation of soil samples of unknown composition for analysis for presence of HC in conditions of absence of a priori information about the sample.
Izvestiya MGTU MAMI. 2014;8(3-3):70-72
70-72
73-81
Optimization of production of carbon black by using idealized model of the reactor
Abstract
The limiting options to improve the efficiency of the production of carbon black for recycling schemes with and without recirculation of the exhaust gas into the reactor. "Limit" is evaluated in terms of the use of an idealized model, which does not take into account the carbon gasification reaction products. For optimization the use of economic optimality criterion. An interpretation of the conditions obtained optimal management of technological regime of the reactor, taking into account the impact of the regime in power consumption.
Izvestiya MGTU MAMI. 2014;8(3-3):81-88
81-88
88-94
94-99
Stabilization system for illumination of the working area
Abstract
The existing lighting system offices usually perform tasks relay control - turn on/off lights. More intelligent systems allow you to set the desired light level, but require expensive equipment. The system continuously maintain the level of illumination on the basis of cheap component base.
Izvestiya MGTU MAMI. 2014;8(3-3):99-101
99-101