Vol 8, No 4-3 (2014)
- Year: 2014
- Articles: 8
- URL: https://ogarev-online.ru/2074-0530/issue/view/3738
Articles
Integrated approach to the technical condition of the process equipment
Abstract
An integrated approach, based on the account of the probabilistic properties of a technical condition of the process equipment for example, evaluate the technical condition of cylindrical hydrocyclone with the use of either Bayesian. Provides diagnostic symptoms and associated diagnoses state. Discuss the results of estimates of the probabilities of the states, depending on the combination of selected features.
Izvestiya MGTU MAMI. 2014;8(4-3):5-10
5-10
The elemental and fractional composition of humic substances in sediments of lakes of the taiga zone of the Tyumen region
Abstract
This work is devoted to definition of fractional and element structure and type of the humic substances emitted from 9 exemplars of ground deposits of lakes of a taiga zone of the Tyumen region. The fractionating of humic substances was carried out by a pyrophosphate method. Elemental analysis method used for the determination of carbon, hydrogen, nitrogen and oxygen. Calculated atomic ratio H:C, O:C and C:N. The predominant type of humus in the sediments is humate and fulvate-humate, which indicates that the flow of the process of organic matter humification sediments predominantly in comparison with mineralization.
Izvestiya MGTU MAMI. 2014;8(4-3):11-15
11-15
Evaluating the effectiveness of cell selection in lawns growing in high copper content in the environment
Abstract
The technology of turf grass Agrostis stolonifera, resistant to copper. Obtained bentgrass plants that are resistant to copper-tion shown preserving stability in most plants. Descendants of four of the five investigation, when the wind blows regenerated bentgrass showed that higher-lerantnost to copper. Therefore, demonstrated the efficacy of the use of glue-accurate selection, resistance to otselektirovannomu symptoms persist in subsequent generations. Obtained plants which are tolerant to copper, possess you-sokimi decorative qualities and can be used to develop varieties tolerant to this metal.
Izvestiya MGTU MAMI. 2014;8(4-3):15-19
15-19
Centers of collective use of laboratory equipment: main tasks and their realization
Abstract
This article covers up-to-date issues of solution of prioritized scientific tasks when the centers of collective use of laboratory equipment performing programs of scientific research and the programs of realization of prioritized scientific tasks are used.
Izvestiya MGTU MAMI. 2014;8(4-3):19-24
19-24
Analytical method of determining the extreme positions of special mechanisms using software systems
Abstract
Developed at the Department of Mechanical Engineering of the University of TMM software systems are designed to teach students analytical methods for solving problems of the course project or course work. These tasks are tasks kinematic analysis of mechanisms, power calculation and dynamic studies of the mechanisms. A distinctive feature of the applied analytical methods is that they are not focused on the types of mechanisms and groups of Assur, which is easy to obtain exact analytical solutions. Widely used graphical visualization of the solutions that allows you to compare the results of these solutions of TMM, with the results obtained by traditional methods.
Izvestiya MGTU MAMI. 2014;8(4-3):24-31
24-31
Description of multicomponent rectification based on extended principle of maximum entropy
Abstract
The paper is concerned with features of the rectification process calculation for non-ideal mixtures in which non-ideal properties appear only as the difference in sizes of microparticles (athermal mixtures). The method is based on principle of maximum entropy. The information entropy of the complex experiment involving conditional probabilities and terms of entropy is used as the plausibility criterion. It is revealed connections between the activity coefficients of the athermal mixture and relative volumes of microparticles.
Izvestiya MGTU MAMI. 2014;8(4-3):31-44
31-44
Preventing the formation of scaling in the water cycle
Abstract
The problems of scaling in the cooling equipment of synthetic ammonia production. Theoretical and experimental study on the choice of a method of preventing the formation of scale (scale formation). Shows a diagram of connections with anti-scale methods of thermal resistance, given the physico-chemical phenomena at the ground level of functioning of chemical engineering systems and properties of water-technological system (PTS). Selected reagent method using complexing to control scaling in heat exchange equipment at low degrees of supersaturation crystallizing systems. The boundaries and applicability of formal statistical models in the description of the Cree-crystallization of sparingly soluble salts from solutions through the formation of the nuclear complex. On the basis of theoretical and experimental studies determined the dose and conditions of entry-hydroxyethyl reagent denfosfonovoy acid (HEDP) and its zinc complex Zn-HEDP in vodoobo-cycle company commander in the production of synthetic ammonia (branch "Nitrogen" of "UCC" URALCHEM"). Presents chemical compositions of sediments and the results of processing the back of the cooling water solutions HEDP, which increased performance capacitor turbocharger syngas to normative values.
Izvestiya MGTU MAMI. 2014;8(4-3):44-56
44-56
57-58