The article is devoted to the mathematical modeling of the plant`s development. The graph theory is used to model the plant objects with different types of branching and its growth.

Keywords: model, the plant object, stem, directed graph

  The paper offers a solution to the general problem of circuit synthesis for n-MOS transistor level band pass filter based on current amplifier with a limited transmission coefficient. The possibility of optimal choice of the parametric compromise. The results of modeling circuit in Cadence Virtuoso environment component-based workflow SGB25VD.

Keywords: CMOS transistor, a band pass filter, a selective amplifier, system on chip, gain, voltage-to-current

Post-war reconstruction of the city of Rostov-on-Don to be divided in to two stages from 14 February 1943. to 1946 and from 1946 to 1956., restore to different choices and features of design and construction. Up to 1946. rehabilitation works are mainly ofthe nature of small repairs of small houses and decoration of apartments. To restor elarge objects started at the end of 1946. A commission was established to restore,which was engaged in the survey of destroyed buildings and made decision sab out the method of recovery. Methods: repair, reconstruction with elements of restoration and reconstruction. Among design organizations involved in the restoration of Rostov special place"Gorproekt."

Keywords: restoration, repair, reconstruction, restoration, method

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A theoretical study of the mechanism of mixed (semifluid) the interaction of the solid lubricant lubricants shell rods with contact "wheel-rail." Methods for determination of the average standard resource shell lubricating grease solid rods and medium wear hard shell shell lubricants rods in various combinations shells at different ranges of temperatures. A fundamentally new way of tribology hard shell lubricants rods "shell holder - movie." Determined on the basis of laboratory tests the new composition of lubricating rods having good lubricity and increased resource consumption less lubrication at elevated temperatures of contact compared to a typical sample of lubricating rods.
Keywords: Mixed lubrication, solid lubricants shell cores, contact "wheel-rail", the average standard resource lubricant, the average wear of the shell, a new way of tribology "shell holder - movie."

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An analysis of the use of pumped storage plants on the territory of the Chechen Republic, in order to load balancing of electricity consumed by the hour of day and seasons. The characteristics of the main rivers of greatest interest in hydropower development of the country. 
Keywords: electricity, energy, renewable energy, pumped storage power plant.

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The analysis of resource use solar and wind energy Chechen Republic, with the prospect of their use as renewable energy. Characterized wind potentials and solar radiation, as mountain and plains in the republic in the various seasons. 
Keywords: renewable energy, electricity, energy, gross potential, technical potential.

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