The article presents the results of studies conducted by the national agency of Afghanistan on ecology and environmental protection and Russian authors of studies on the assessment of air pollution in the city of Kabul. An analysis was carried out for the formation of information on the state of air quality in the city of Kabul, when considering its street-road network as a source of chemical pollution of the air environment. A mathematical model of the dependence of the concentration of fine dust (PM10) on three factors: the speed of wind, humidity and temperature in the winter months of the city of Kabul.

Keywords: Air quality, dust, fine particles, moisture, wind speed, multiple regression coefficient, Fisher criterion

Drying module is a part of any modern gas analysing device. Using the Peltier elements for cooling the gas probe in druying module is a known technical solution. Peltier elements are very energy-intensive things. So the task of calculation of amount of electrical energy which is needed for predetermined temperature decline of gas probe is very topical. The solution of this task is given in the article. With formulas for partial pressure of vapour we can calculate the humidity of gas at the output of drying module. Then we can find the temperature of gas. Finally using the heat balance equation and nomogramms we can calculate the voltage for Peltier element.

Keywords: Peltier element, gas probe, drying process, gas analyzer, heat balance, partial pressure of vapour

The article is devoted to the calculation and assessment of background pollution of the atmosphere srednebalansovogo integral criterion for the studied regions of Volgograd for the years 2010-2013. Assessing the background air pollution, and creating a map of alternative sites for new industrial construction, is determined srednebalansovy integral criterion of pollution of the atmosphere of the study area. This requires calculation of the average concentration of harmful substances in each group summation of polluting the area. The data obtained were built integral and differential distribution function srednebalansovogo integral criterion of atmospheric pollution for Volgograd regions. According to the analysis the greatest volume of air pollution falls on Central and Traktorozavodskiy districts, which corresponds to the results of the calculations of the specific pollution load on the atmosphere of the city.

Keywords: biospheric compatibility, balance method, the biosphere, the technosphere, the atmosphere, the average balance integral criterion

In the article discusses the features of work air handling unit (AHU) based on spray chamber (SC), developed the design of the test bench and presents the results of the tests SC, identify ways to improve them, particularly in the lower part of the workspace was placed plane-parallel packing. It was established experimentally that the efficiency of processes of heat and moisture transfer increased by an average of 6 - 10%.

Keywords: air handling unit, spray chamber , heat and mass transfer, efficiency

The results of analysis of regulatory requirements for dust collection systems based on existing environmental legislation. Development of systems for dust collection and dust extractor is using the tools of quality management. It has established a set of basic technical requirements for systems of dust removal and their parts taking into account modern requirements for energy efficiency.

Keywords: ecology, environmental regulations, dust collection, air quality management, dust collectors, energy efficiency

The sorption capacity of some types of dust in the production of building materials, structures and products. For example, cement and wood dust being suspended in the air of the working area or in the air, absorbs substances higher hazard class.

Keywords: cement dust, wood dust, sorption capacity, fractional composition, hazard class

The article studies the method of the distant measurement of the concentration and the disperse content of the dust in the air of living and working areas in the real time mode. The use of the laser sounding as a highly precise method of measurement and air quality control is based. The results of the implemented research are displayed. The device that was used for the studies of the concentration of the disperse dust content is analyzed. Its use for the control of the air quality of the city atmosphere is based.

Keywords: dust, suspended solids, concentrations, disperse content, working zone, living zone, laser sounding, safe working conditions, ecological monitoring, optical method

One of the most important systems for ensuring the required air quality in Orthodox churches is the ventilation system. Mechanical ventilation is getting contaminated during operation. The air, passing through the air ducts, contains dust particles, including pathogenic bacteria. To prevent bacteria from multiplying in the ventilation system, bactericidal filters must be used. Halls of Orthodox churches belong to public buildings with a large crowd of people with a long stay. Such premises require a bactericidal efficiency of at least 90%. For the ventilation systems of the church of St. Theophan the Recluse, the authors proposed and implemented a device for bactericidal air treatment using ultraviolet radiation. The bactericidal effectiveness of this device was 92%, which is higher than required. The authors recommend using the proposed device for public buildings.

Keywords: Orthodox church, church buildings, ventilation of religious buildings, bactericidal treatment of air, ultraviolet radiation, air disinfection, bactericidal effectiveness

In article the sections method offered by professor Azarov V. N. for assessment of fractional composition of the dust arriving on air Wednesday is considered. Application of this method when processing results of the dispersive analysis of cement dust is described.

Keywords: dust, pass function, fraction, diameter of a section, probabilistic corridor of distribution

In article the analysis of technological processes of repair construction works as sources of formation of fine dust is carried out. Results of pilot studies according to fractional composition and concentration of dust in urban air environment around carrying out such works are given

Keywords: dust, dust emissions, concentration, fractional structure, fine particles

Results of the researches on assessment of pollution of urban air environment conducted by foreign and Russian authors by fine dust of a natural origin are given in article

Keywords: quality of air, dust, fine particles, natural origin, atmosphere

In article questions of nonlinear interaction of acoustic waves in the air environment in the course of distribution are considered. Is shown that the nonlinearity coefficient in the air environment considerably exceeds that in water therefore generation of secondary waves in the air environment is more effective than in water. The main characteristics of interaction pay off. For realization of the parametrical antenna for information transfer the narrow beam offers to use as converters in the rating antenna high-frequency loudspeakers with high sensitivity in the radiation mode. For reduction of level of side petals in the characteristic of an orientation of the antenna of a rating are given the recommendation about an arrangement of converters in the antenna of a rating and to their coordination with Wednesday by means of acoustic loud-hailers. As initial parameters for calculations passport data of loudspeakers get out. Characteristics of the parametrical antenna at its arrangement in air streams are analyzed. Interaction of waves in a stream is described by the non-uniform wave equation in which the member from a convective derivative estimates influence of a stream. Are considered the non-uniform equations for various working out the resultant generated signal the parametrical antenna in the environment with an air stream. Expressions for calculation of additives to the signals generated in a homogeneous environment for distribution of waves of a stream perpendicular and parallel to the direction are removed. It is shown that the air stream in a near zone of the antenna of a rating increases amplitude of the secondary waves generated by nonlinear interaction. Recommendations about use of the parametrical antenna for information transfer in the air environment are made.

Keywords: parametrical antenna, air environment, rating converter, air stream, wave equation

According to meteorological studies found natural growth of air temperature, coincident in timing with the beginning of a geomagnetic storm. The data were analyzed according to the temperature of about one hundred meteorological stations. Based on this analysis, it was established phenomenon of short-term (30-60 min) growth of surface layer air temperature during the beginning of the magnetic storm, the detected azimuthal drift of the temperature gradient after the start of geomagnetic storms

Keywords: the low-latitude thermosphere, geomagnetic storm, temperatura air, temperaturny gradient, growth temperature

Negative environmental impacts from the enterprises of construction materials industry could be evaluated by the volume of emissions into the atmosphere suspended solid particles with different aerodynamic diameters. The Problem solution of raising the level of atmosphere protection from the negative effects of pollution sources mostly depends on getting and processing information about particulate dust characteristics. Dispersed composition of dust make possible to design the better way for improving the protection level of air pollution by fine particles dust.

Keywords: particle, dispersed, particulate, gypsum, emissions, pollution source, dust emissions,unorganized, efficiency, concentration, air

Increasing the level of protection of the air environment of the fine dust is to address the issue of selection of the optimal operating parameters of dust collectors used in emission control systems to the atmosphere building industries. At various stages of the process of building production generated dust emissions have different particulate composition. This complicates the process of collecting dust removal equipment parameters and requires the detailed experimental studies. In this paper we consider the procedure experimental studies fractional breakthrough on different types of plaster dust production; provides recommendations to reduce the number of required tests; received the minimum possible value of the fractional dust breakthrough, regression models to calculate the fractional slip of dust of various fractions

Keywords: slippage,dust collector, fractional, cleaning, dust, efficiency, dispersed, options, gypsum