The object of the development is an experimental installation with pulsed circulation of the coolant in the main circuit for its use as a hydraulic drive of a diaphragm pump used for pumping liquid in the secondary circuit, which increases the energy efficiency of the pump drive for small-scale energy facilities. An installation with pulsed circulation of the coolant with a diaphragm pump was developed, assembled and tested on the basis of a new design of the shock unit with a cam profile, which makes it possible to create an acceleration of the flow at the pump suction. As a result of the experiment, we obtained the dependence of the volume of the pumped liquid on the frequency of operation of the shock unit.

Keywords: energy efficiency, diaphragm pump, shock unit, pump drive, cam, fluid flow, fluid pressure, oscillation frequency

Developed criteria for matching the oscillation frequencies of sensitive elements biaxial functionally integrated micromechanical gyroscopes-accelerometers LL-type. Review the results of modeling.

Keywords: microsystm technology, element base, model, modeling, gyroscope, accelerometer, sensor

Analysis of the effectiveness of the electrophysical activation of foam concrete mixtures was completed. The raw materials and experimental technique are described. Results of estimation of the effectiveness and impact of alternating electric field on the foam concrete mixes was presented. As object of research was made the impact of factors such as the grading of the aggregate and the tension created by the electric field on the physico-mechanical properties of foam concrete made of electroactivated mixtures. Conclusions are made on the basis of the obtained experimental dependencies.

Keywords: Variable electric field, foam-concrete mix, activation, grain size of sand, coefficient of structural quality, gelation, interpore partition

The optimization of the factors affecting the efficiency of Electro-activation of foam concrete mixes is carried out. For this purpose was applied mathematical planning experiment. As varied factors adopted grain size of sand grains, the value of the applied voltage and the duration of treatment. The mathematical models for strength, high density and structural quality are obtained.

Keywords: Variable electric field, foam-concrete mix, coefficient of structural quality,

The results of physico-chemical studies of micro-and macrostructure of fine-grained concrete hard pressing, used for making bread products for pavements . To improve the quality indicators ( bending moments ) in the fine-grained concrete mixtures were introduced damping additives such as ash microspheres - component slag mixtures . The essence is the replacement of the dense grain mixture with an equal volume of mineral supplements. Ash microspheres have a reduced strength and modulus . Of interest are preserved particles of hollow spheres of additive used , they are responsible for the effect of branching cracks. For experimental studies the author has developed a special method for determining the persistence of particles of ash microspheres after exposure compacting pressure. The quantitative ratio between the phases and composition of the mineral phase were determined by X-ray diffraction and optical microscopy.

Keywords: fine-grained concrete, hard pressing, components slag mixtures, ash microspheres, petrographic analysis, damping additives Derivatogram, diffraction, sample cylinders

"This article is devoted to the development of the method for modeling elements of microsystems technology(MST) of membrane type. In this paper perforated membranes are considered and the impact of perforation on the mechanical properties of the membranes is examined. In numerical simulations of the elements it is proposed to use the equivalent mechanical parameters of perforated membranes obtained at the initial stage of the simulation. This will allow to obtain find the optimal parameters of perforation, reduce the time and resource modeling of MST elements. To test the technique numerical experiments were conducted for the two square membranes with sides 1.5 and 3 mm fixed on the contour of the same thickness. We studied the influence of the size of the perforation on the equivalent Young's modulus of the perforated membrane. "

Keywords: microsystems technology, numerical modeling, perforated membrane

In recent years reconstruction of buildings and constructions became one of the main directions in the field of construction. Considering that at reconstruction capital investments it is significantly less, and payback is higher, than at new construction, the share of capital investments in reconstruction will increase.
It is necessary to apply intensive methods of repair and reconstruction of buildings and constructions as one-time costs of reconstruction and repair there are less than one-time costs of new construction in construction production. Considering a significant amount of the factors significantly influencing the organization of construction at reconstruction of buildings and constructions, previously before development of organizational and technological documentation it is necessary to prepare the list of the data necessary for the organization of construction works and to make their analysis which concerns the analysis of projects and the territory of a building site, including situational plans.

Keywords: reconstruction, specifics of the organization, factors, systematization, analysis, feasibility study

Recently, in the process of creating a single information space worsened organization relevant databases in geographically separated units of one company, no common local area network and to allow for working with databases via the Internet. The main solution is to organize the synchronization of electronic data on external media.
The developed application allows an automated procedure to find differences in the databases of reference materials and assortments, add to the database of any of the divisions of the elements that are missing from it, and are available in the other areas.
The present article is intended for those engaged in the organization of a common information space in the field of design and technological preparation of production through the creation and administration of topical databases.  

Keywords: database, reference of materials and assortments, algorithm, synchronization, program, enterprise

  The integrated sensor LR-type on the basis of carbon nanotube is described. Are offered a method of processing of the sensor signals. Results of modelling are represented.

Keywords: Еlement base, microelectromechanical system, design, sensor, gyroscope, accelerometer.

The received results of modelling of a micromechanical sensor of angular speeds and linear accelerations are considered. 

Keywords: microsystm technology, element base, modeling, sensor, gyroscope, accelerometer

Knowledge of the kinetics heat irradiation give more sources for understanding physico-chemical process connected with solidification astringent. On curves of heat irradiation you can traced three stage and then read the kinetic equations describing each of them.

Keywords: kinetics, heat irradiation, speed, stages, astringent

Information about authors of issue №4 p.1 (2012)

Keywords: authors

The paper is devoted to the generalized analysis of the research on the influence of the electric field and organic gelling additives on the properties of foam concrete. It is shown that the transmission of the electric field close to the resonance frequency oscillations of the particles in the binder or the introduction of slip mass gelling components lead to a significant increase in the physical and mechanical characteristics of the foam. 
Keywords: foam, impact properties, field modifiers.

Keywords:

Processes associated with obtaining various purposes silicate materials is always accompanied by energy exchange between the interacting phases. Their thermodynamic analysis is not always possible due to the lack of appropriate reference material. 
This paper proposes a priori estimate of the thermodynamic functions of silicate formation, as well as other oxide minerals, and their crystalline hydrates. 
Keywords: silicates, thermodynamics, functions, education, specific heat.

Keywords:

Information about authors of issue №1 (2012)

Keywords: authors