The article considers the questions of interrelation between preparatory and main works in forest harvesting. It also examines a method of monitoring of their effectiveness with the use of geographic information systems considering the evaluation of forest offence during these works.
Keywords: organization of forest management, forest offence, geographic information system, preparatory works, forest logging
The process of sylvinite ores desliming with ultrasonic treatment is considered. The influence of frequency, intensity and duration of impact to the insoluble rest removal efficiency of sylvinite ores crystals is defined. The optimum mode of sylvinite ores desliming with ultrasonic treatment is established.
Keywords: desliming, desliming degree, sylvinite ore, ultrasonic treatment, insoluble rest
In article the refined method of calculation gamma percentage fatigue resource of an arrow shovel excavator for population of final volume, by means analytical method of definition parameters of Weibull distribution is offered.
The made computing experiment has shown that the developed method allows to receive gamma percentage value of a fatigue resource of an arrow shovel excavator by means of transition from the sample data to the population data.
Keywords: a resource, an arrow, shovel excavator, population, Weibull
This article is dedicated to the land’s resources management, exposing to drawing and flooding as a result of water level lifting in reservoirs and rivers during the floods and heavy showers. The dangerous nature processes inflict great damage to environment, so they need identical administrative decisions.
Keywords: Land’s resources, damage, management of land’s resources.
The current stage of development of the sphere of telecommunications services is accompanied by a side effect - electromagnetic pollution. Until recently, the effects of hygienically significant levels of electromagnetic radiation (EMR) were subjected to only a certain number of people associated with professional activities. At the present time due to the powerful development of the telecommunications market in Russia is necessary to speak about the impact of EMR on the entire population. It should be noted that the growth of telecommunications services in Russia are far ahead of all forecasts. In this regard, there is an urgent need for monitoring the electromagnetic environment in the locations of radio transmission of technical objects.
Keywords: electromagnetic ecology, electromagnetic pollution, zones limits building, sanitary protection zones
This paper discusses the problem of controlling the characteristics of sonar multibeam receiver antennas. Hydro acoustic means, such as side-scan sonar, profiler, sonar, multibeam sonar, are used extensively for remote determination of the parameters of media for environmental management. In the article the technique of controlling the phase-frequency characteristics of the receiving antennas multibeam echoes sounders. The study method allows the measurement of the phase-frequency characteristics of antennas in a hydro acoustic tank which size is less than length of a near field of the reception aerial.
Keywords: Conservancy, multibeam echo-sounder, seabed research, underwater acoustic
The main directions of regional impact on the solution of a question of food supply of the population of the region are considered from the local regional budget.targets of a diversification of management are presented by innovative activity of the industrial enterprise.
Keywords: food supply of the region, measure of regulation of food supply, structure of actions for regulation of food supply by local authorities
In the model aeration tank and pilot conditions, there are shown the effectiveness of ceramic aerators made of Artik tufa which is mined in the Republic of Armenia and determined technological parameters of biological and oxidative purification of waste water in the continuous and discontinuous mode of aeration.
Keywords: aerators tuff, continuous and discontinuous mode of aeration, Artik field, biological and oxidative purification, waste water, process parameters.
The state of the atmospheric air in such industrial cities of the Rostov region, as Belaya Kalitva, Donetsk, Kamensk-Shakhtinsky over the last 10 years (2003-2012). Identified main pollution sources and priority pollutants. Analysis of the concentrations of pollutants in areas of concentration of industrial enterprises, on highways and in dwelling zones. It is established that industrial cities are specific «geochemical provinces», in which abnormally elevated concentrations of many chemical elements. On the background of the decrease of the role of industrial enterprises in the air pollution increases the role of motor transport
Keywords: Anthropogenous influence, industrial production, ecological situation, environment, an ecosystem, the industry, transport, pollution.
The state of surface water in such industrial cities of the Rostov region, as Belaya Kalitva, Donetsk, Kamensk-Shakhtinskiy. Identified the main sources of their pollution and priority pollutants. Analysis of the concentrations of pollutants in R. Sowing. Donets river and its tributaries. It is established that the water management situation in the industrial cities remains unfavourable, and the level of water pollution is assessed as «dirty»
Keywords: Anthropogenous influence, industrial production, ecological situation, environment, an ecosystem, the industry, transport, pollution, water objects.
In this paper a form of expression in the matrix to determine the unknown ratios in double rows, appoksimiruyuschih displacement of a point of the middle surface of the shell, which is used in calculating the shell variation-energy method
Keywords: envelope variation-energy method, the minimum total potential energy of the system, movement, deformation.
In operation the case of distribution of an ultrasonic wave in a water pipe located in the dense ground and subject to activity of radial pressure of a ground is viewed.
Keywords: acoustics, monitoring, ground, distribution, wave, water pipe
The article presents the author's method of evaluation competitiveness of construction technologies. The main factors that have influence on the choice of the most competitive construction technology are indicated. The paper contains suggestions on forming the aggregation of local criteria intended for complex estimation of efficiency of any construction technologies. Expediency of vector optimization of competitive technologies is substantiated. The field of rational application of research results is shown
Keywords: construction technologies, complex estimation of efficiency, competitiveness, local and global criteria.
In operation the case when the cylindrical pipe is not completely filled by water is viewed, the ultrasonic radiator is located on a shell of a water pipe. It is shown, that for the given case, it is expedient to view the symmetrical and assymetric modes of distribution of an ultrasonic wave.
Keywords: acoustics, emitter, wave, water pipe
This paper presents a method of constructing microwave selective amplifiers, which allows control Q and voltage gain at the frequency of quasi-resonance. The presented architecture selective amplifiers for SiGe process technology have low power consumption.
Keywords: RC-filter, good quality, controlled selective amplifier, gain, frequency quasi-resonance