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Herald of Dagestan State Technical University. Technical Sciences

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Vol 29, No 2 (2013)
View or download the full issue PDF (Russian)
https://doi.org/10.21822/2073-6185-2013-29-2

INSTRUMENT-MAKING

7-11 735
Abstract

In the article the thermoelectric device, which heated junctions spatially distant from the cold junctions to reduce parasitic losses between the conductive junctions.

11-14 673
Abstract
The article considering the different design options for cooling electronic devices boards.

SEMICONDUCTORY MATERIALS AND INSTRUMENTS

15-21 703
Abstract

When developing a technology of power device’s structure generation the breakdown voltage and the resistance of silicon substrate are constitutive parameters. Modern generation methods allow to create a structure based on fragile materials which behavior directly depends on the breakdown voltage and the resistance of chosen materials in the depth of structure. In this paper the work on determination the crystal’s channel resistance dependence of its structural parameters for the average high-voltage BSIT is done.

THERMOPHYSICS

22-25 641
Abstract

In article are considered various constructive options of devices for cooling of radioelectronic devices working in repeated and short-term modes.

26-33 734
Abstract

Film silicon oxide plays an important role in the process of creating silicon structures and semiconductor devices. The article is devoted to methods of formation of oxide layers, which
include: thermal oxidation, anodizing in electrolytes, pyrolytic deposition (deposition from the gas phase and plasma anodizing or oxidation.

PHYSICAL AND MATHEMATICAL MODELING

34-38 668
Abstract

In article is offered procedural model of the presentation of the knowledges, providing planning the goal-directed behavior of the intellectual systems in process of instrumental activity.

MECHANICS AND MECHANICAL ENGINEERING

39-45 698
Abstract

From the setting of the problem in the transferences for possible cases of equivalent substitution of loads are formulated the necessary and sufficient condition of existence of analogy, allowing to represent the action of forced deformation in the form of sum of influence of surface and bulky forces, bulky forces in the form of sum of influence of surface forces and forced deformations, surface forces in the form of sum of forced deformations and bulky forces.

46-52 682
Abstract

Technology of the fabrication of the shaped milling cutters is described In article before hot pressing and toughness to surfaces. In detail process pressing metallic powder is described for fabrication of the powdered details from carbide steel. The Organized calculation of the dies for cool pressing the shaped milling cutter.

MELIORARION AND HYDROTECHNICAL BUILDINGS

53-57 714
Abstract

In the article the modern condition of drainage systems and irrigated land in Dagestan and tasks to improve the technical condition of irrigation systems for the rational use of irrigation water and increase the productivity of reclaimed lands.

58-64 690
Abstract

In given article on base of the analysis of the literary sources and generalization experimental and натурных given are elaborated main factors, influencing upon process of the transport channel-forming sediments. The Process of the transport channel-forming sediments is one of the complex physical processes, conditioned by ensemble factor: an hydrоmechanical of the features of the water flow and physico-mechanical features alluvium that is a reason of the absence to united theory of this process, difficulties of the multiple accounting methods of the determination of the consuptionsediment and big divergence in result calculation on him.

65-70 717
Abstract

When you select a specific consumption of the dam, the corresponding minimum Noah value crest front of the dam, it is necessary to take into account possible changes of the water level regime due to a General erosion of the river channel for attaching in the downstream. Considering this circumstance, has developed a methodology and computer program for calculation of total washout of the bottom of the riverbed downstream waterworks depending on the specific consumption of the dam. In the course of the research were graphic and analytical depending on the impact of specific economical expenditure on the depth of the total washout for fastening downstream of the spillway dam.

BUILDING AND ARCHITECTURE

71-76 749
Abstract

Аn article deformation properties of a light self – compacting concrete (LSCC) are considered. Its comparison with characteristics of light concrete on porous fillers is given. Creep and LSCC shrinkage are in detail analyzed. Conclusions on work are drawn.

76-81 708
Abstract

The article deals with methods for preparing modified concrete binders and using as a main component composition of anhydrous sodium silicate binder and a filler zircon concentrate. The physical and technical properties of the heat-resistant binders and concrete, consider various ways to improve the physical and operational characteristics and applications of zircon refractory concretes.

81-86 688
Abstract

The paper deals a new structural solution of reinforced glued wooden beam and results of
experimental studies of the bearing capacity of reinforced beams in a special way. We presentthe
design parameters ofprototypebeams, description ofthe experimental setup, results of experimental studies and comparative analysis ofthe stresses anddeflectionsdepending on how the pinching inclined armature.

ADVANCED TECHNOLOGIES

87-91 701
Abstract

The experimental results warming of canned "compote grapes" in an electromagnetic microwave field. Some new modes of heat sterilization using preheating of the grapes in the microwave EMF.
Revealed that the use of pre-microwave heating of berries in the banks before pouring syrup saves heat, shortening heat sterilization regimes compote over 30% and the quality of the finished product.

91-97 696
Abstract

The scientific approach to the question of durability of kinematics - the dynamic pair of cylinder liner - piston rings, which depend primarily on the roughness is considered. In this paper as the optimal roughness values adopted the inverse roughness obtained after the break-in cylinder liners processed by rolling.
The graphs of the weight and linear wears of indicated pairs are shown. A solution for the issue determined by the new technology producer's risk are offered.

97-104 679
Abstract

Developed a calculation-experimental method of determining the initial conditions of road traffic accidents in their consequences in the event of a frontal collision.

105-110 569
Abstract

Osmium complexes by interaction osmium bipyridyl chloride (Os(bipy)2Cl2) and dimmethylbipyridil chloride (Os(dimebipy)2Cl2) with a number of synthesised polymers on the base of 1-(3-aminepropyl)-imidazole, methylmethacrylate, acrylic acid and butylacrylate have been obtained. It have been shown that osmium complexes of the obtained polymers with bipyridyl chloride and dimmethylbipyridil chloride could be used as effective mediators for reagentless amperometric biosensors.

ECONOMIC OF INDUSTRY

111-118 715
Abstract

The article discussesthe possibilityfor the developmentof themechanismcluster formationin the military-industrial complex of Russia, which could significantlyadvance thestate program forthe modernization ofthe military economyandthe implementation of strategicweapons programs.

118-125 758
Abstract

The analysis of opportunities of construction of the enterprises of sphere of services in a countryside in Southern Dagestan is lead. Features and requirements to designing the enterprises of sphere of services in a countryside are considered {examined}. The four-stage concentric model of rational territorial accommodation of the enterprises of sphere of services and the author's approach to an estimation of efficiency of investment civil-engineering designs of objects of sphere of services in a countryside are offered.

125-131 635
Abstract

Development of stock market as instrument of attraction of investments into the industry Development of stock market as instrument of attraction of investments into the region industry In this article need of attraction of investments into the region for the purpose of overcoming of industrial recession and improvement of quality of life of the population, by means of development of stock market is considered. This problem arose in connection with
backwardness of the financial markets that, in turn, results in deficiency of investments in the region.
Realization of a complex of actions of investment resources providing inflow to the region industry is necessary for the solution of a problem of attraction of investment resources.



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ISSN 2073-6185 (Print)
ISSN 2542-095X (Online)