№ 77(3), March, 2012
Public date: 30.03.2012
Archive of journal: Articles count 100, 210 kb
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Description
Qualitative and quantitative composition of the low-molecular carboxylic acids (CA) which were contained in the cultural liquid (CL) of the four strains of Escherichia coli and Salmonella enteritidis var.Issatchenko was investigated. The differences in the composition of the CA were shown, their dynamics during the bacterial growth and their total concentration in CL were strain specific characteristic. The differences in the composition and dynamics of the CA, which are specific only to probiotic and opportunistic strains were revealed
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INFLUENCE OF HILLY TERRAIN SLOPE ON THE VOLUME OF ROAD EARTHWORK
Description
The analytic dependence for slope correction calculation is obtained. This correction is introduced in the formula for calculating the area of earth roadbed cross-section. It allows detailing the volume of road earthwork at the design stage. The correction size depends on the slope steepness as well as cross-sectional parameters of the earth roadbed. The calculations show that the correction size is essential if ratio of slope is 25 or less
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RUSSIAN ELECTRICAL NETWORKS STATE INVENTORY SYSTEM
Description
The article presents description of an advanced asset system for geographically distributed electrical network objects
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RESULTS OF RESEARCHES OF THE DRIVE OF FOREST-PLANTING MACHINE WITH THE IMPROVED SAFETY DEVICE
Description
It is set, as parameters of the safety device and the drive of forest-planting machine influence on the coefficient of exactness of wearing-out
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Description
The article describes the experimental investigation of the density of the gas condensates and their frac-tions in the field of high temperatures and pressures. On the basis of the experimental and theoretical da-ta has developed a new equation of state. The ob-tained generalized equation of state can be used to calculate the density of other natural hydrocarbons
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FORMATION MODEL OF INVENTORY REPAIR MANAGEMENT FOR LOGGING ROADS
Description
The article presents the mathematical model and algorithm searching for the optimum amount in rates of repair materials. These solutions account for the dependence of the transport costs of repair on the volume parties. They include a wide range of changes in the cost per unit volume of material. Solutions provide an effective inventory management in maintenance and repair of logging roads
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Description
In the article, application of methods of self-organizing for identification of processes of weight carrying polluting components of underground waters for the purpose of optimization of technogenic loading on environment is considered
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Description
In this article, the second group of optimum speed of diagrams of moving actuating device of electric drive of alternating current is described. Parameters, condi-tions of existence and analytical dependences of an angle of rotation of actuating device of electric drive of alternating current on time for each of diagrams are defined
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Description
In the article, the way to solve the problem of use of energy of a waste waterway for the purpose of reception of the additional electric power, taking into account ecological factors, is offered. The offered way consists in application of the developed design of hydroelectric power station
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Description
The variant of the decision of a task of management of a transport resource of buses is submitted on the basis of the current information on a condition of a route. The real speed of movement of transport, change of number of the passengers is taken into account. The considered task concerns to a class of extreme tasks on networks and is complicated by a set of restrictions
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