Chlorination is the most common, and in fact no alternative method of disinfection using in Baghdad water supply system. Thus there is an urgent need to control the trihalomethanes (THMs) in drinking water. One of the objectives of this study is to investigate the content of THMs in Baghdad water supply network. Studies showed that the substantial amount of THMs formed in water distribution system, THMs content tends to increase with the distance from the starting point coupled with a decrease of residual chlorine concentration. It is observed that in summer total THMs concentration growth rate in water supply network was 1.3-1.4 times higher than in winter as well as total amount of THMs increase by 30 percent in summer. It was found that the concentration of total THMs never exceeded 80 μg/l – the level specified in National Primary Drinking Water Regulations: Disinfectants and Disinfection Byproducts (Stage 1) established by USEPA. However, in summer total THMs concentration in the water always exceeded 40 μg/l – the level set in accordance with Stage 2 of this Rule. The most of total THMs (73-80%) were bromine compounds (CHCl2Br, CHClBr2 and CHBr3). It is shown that the most efficient way to reduce THMs in Baghdad water supply network is to use the chlorine dioxide for chlorination.

Keywords: chlorine dioxide, chlorination, drinking water, trihalomethanes (THM), water supply network, water supply system

The represented approach of dynamic process modeling is based on the technology of automatical semantic text analysis. An associative network is forming during text processing. Its key notions, including  lexical and psycholinguistic markers of the analyzed process, are ranked by theirs semantic weight. The weight being multiplied by marker status value at the scale of “good-bad” gives its contribution to the process stage characteristic. Transformation of the accumulated for all of the markers process characteristic from one period of time to another one is characterize a direction of the process.

Keywords: automatical text processing, associative (homogenous semantic) network, process dynamic modeling, social processes, lexical and psycholinguistic markers

A mathematical model of heat transfer processes, the discrete model is based on the finite difference method, and the results of calculations of the temperature distribution also will be developed. In addition the program was created which allows to calculate the distribution of temperature over its entire length for given values ​​of insolation, ambient air temperature and air velocity inside the collector  

Keywords: mathematical modeling, finite difference method, heat transfer processes, solar collector

The article is devoted to identify the causes of specific behavior argillit-like clay clays Sochi suites at bid opening and interaction with water. The article outlines the history of rock formation, from the deposition of the primary clay material on the bottom of the sedimentation basin to convert it into a highly lithified argillaceous rocks, generating mechanism contacts between the clay particles and the type of contacts formed.

Keywords: Argillit-like clay, engineering geology, catagenesis, construction, swelling, the density of the soil, cutting the road

In this paper is presented a method of forming an exact self-similar solution of the problem of calculating the hydrodynamic thrust bearing with an adapted profile support surface and emfiruyuschimi properties in the transient regime of friction. Prepared and conducted evaluation of the main working characteristics: dimensionless load carrying capacity, dimensionless friction force and dimensionless costs. The optimal parameters for the main performance are gotten.

Keywords: thrust bearing, two-layer lubrication, porous layer, the nonstationary problem

A scheme of the experimental setup of the jet air temperature measurement. Experimental results confirm the dependence of the frequency stabilnost pneumatic signal from the flow temperature with a large number of measurements.

Keywords: pneumatics, temperature, piezo, airflow, sensor stuyny

Possibilities of using mathematical programming methods for obtaining optimal solutions of structural units were shown herein. Method of personal optimization based on monotonicity property of the used relations was applied as optimization algorithm. Advisability of using mathematical simulation methods when providing complex safety of construction facilities and reduction of breakdown occurrence is emphasized.

Keywords: optimal design, mathematical simulation, complex safety, personal optimization, plate structures, risk.

The article discusses the stability of the chernozem biological properties in the combined pollution of lead and an alternating magnetic field. Soil parameters such as the activity of catalase and dehydrogenase, soil biomass, soil phytotoxicity are considered. The main contribution to the change in the biological properties of the soil in the combined pollution by lead and an alternating magnetic field makes lead pollution. The contamination alternating magnetic field with a high level of induction (3000 mkTl) over only reduces the amount of lead pollution of soil biomass, but increases the activity of soil enzymes. At a lower level of induction (300-1500 mkTl) with combined pollution increases the activity of enzymes and biomass is virtually identical to the activity only if contaminated with lead. Phytotoxicity indicators of soil pollution with lead and an alternating magnetic field induction of 300 mkTl did not differ from those of soil contamination only lead, but with an increase in the level of induction to the 1500-3000 mkTl phytotoxicity indicators declined in comparison with the lead pollution at 18-27%.

Keywords: soil, combined pollution, alternating magnetic field, lead, biological properties of soils

The dynamic problem  of an anisotropic poroelastic plane under an influence of point source in the steady-state oscillation mode is studied. An analytical solution of the problem as a single integrals over a finite interval is given. Numerical experiments on the construction of solutions are made and the results are compared with the known classical solutions.

Keywords: poroelasticity, vibrations, anisotropy

The possibility of channeling X-ray fluorescence inside the hollow microvascular at the energy of the exciting radiation in the vicinity SiL2, 3 - absorption edge has been researched. Theoretically obtained the angular distribution of the field passing through the microchannels. The calculation model of inhomogeneous waveguide layer with the generation of X-ray fluorescence inside the walls of the microchannels shows the possibility of escape of radiation at large angles.

Keywords: channeling of X-ray fluorescence, microchannel plates, focusing of X-ray radiation

In the article a number of approaches to a flapping wing pilotless vehicle control system synthesis are analyzed. Referred type of pilotless vehicles is possessed of a number of advantages compared to the traditional schemes, but requires a special approach to control system creation because of strong nonlinearity and multicoupling of a controlling object mathematical model. As a result of a control system synthesis approaches analysis a synergetic approach was marked out as the most adequate for the mentioned above type of controlling objects. An idea of prognostics application for the goal of reaching of adaptive control is also set forth. In this case parameters of an object of control and parameters of ambient both are to be forecasted whereby an adaptive behavior of an object of control is expected to be achieved.

Keywords: control system, pilotless vehicle, control theory, “barrier of dimensionality”, synergetic approach, adaptation, prognostic.

The authours is viewed the new method formalization of computing intelligence, which use molecular interaction model  in the cell. The method parametr adjustment is described. The technological reseach of  marketing verbal proposal  marketing strategies example influence on  the number of potential cliens is introduced.

Keywords: Computing intelligence, molecular interaction model in the cell, bad formalizable management strategies, business planning

this article raises the question of choosing a set of machines and shaping the sound of the algorithm sets of machines and mechanism that allowed us to determine the basic design characteristics, the type and number of vehicles, as well as the feasibility of using mechanisms in the construction processes.

Keywords: machines, equipment, technology, organization, set

This paper describes a hardware-based and software system parametric estimation of signals. It`s experimental accuracy was achieved measuring the phase difference between the two quasi-harmonic signals at 10 μrad.  

Keywords: parametric analysis, technical diagnostics, the phase difference

The article is dedicated to development of a mathematical model for evaluation of production assets in smart power grids state for decision support system. The results of equipment state evaluation can be used for prognosis of reliability of the asset and each of its components functioning for the time interval, for which various versions of technical solutions are considered.  

Keywords: decision support system, state assessment, Smart Grid