05.00.00 Technical science
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Description
The article presents the mathematical models of technological modes of crushing, drying and pressing in the production of pellets from wood raw material with a high degree of rot
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INSPECTION OF THE TECHNICAL CONDITIONS OF THE “ROSTOV SEA” RESERVOIR DAM TO ASSESS ITS SAFETY
DescriptionCalculation of the dam destruction risk due to filtration processes is made. Calculation algorithm of the destruction risk of a uniform ground dam is worked out. Recommendations on the improvement of the dam technical conditions are given
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Description
The results of irrigation flumes stale survey will indisructive methods are considered on the example of Azov irrigation system. Especially it is noted the possibility of georadar survey application to hydrotechnical structures.
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FORMATION AND CONTROL OF TRIHALO-METHANES IN THE DRINKING WATER OF BAGHDAD
DescriptionThe article is devoted to the formation and transfor-mation of trihalomethanes (THMs) in water supply system of Baghdad (Iraq). The results of research work show the dependences of THMs concentration in the tap water on the distance from water treatment plants, chlorine residual and water temperature. It is shown that the way to reduce THMs in Baghdad water supply network is to use the chlorine dioxide for chlorination as well as sorption treatment in case of preliminary chlorination
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PROCESSING XML-DOCUMENTS INTO JAVA EE
DescriptionThe article presents programming ways for XML processing by Java EE 6 and Glassfish v3 server
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SUBSTANTIATION OF MODERNIZED TRUCK-AND-TRAILER DESIGN EFFICIENCY
DescriptionThe possibility of timber underway operations productivity increase through using cross-country truck-and-trailer combination sets with active trailers is given
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JUSTIFICATION OF SPAR ROADS JUNCTION ANGLES TO THE FOREST ROADS
DescriptionThe zone of attraction of hauling branches in an allocation scheme based on the roads in "herringbone" forest resources is divided into 'near' and 'distant' parts with respect to location of contiguity point to forest road. In the "distant" part at certain parameters of cutting area, it is advisable to lay spar roads to a branch at an angle equal to the optimal angle of junction of branch to line, which reduces the cost of removal of wood on the branch. In the "near" part, as well as in forked and combined schemes of road allocation in forest resources , spar roads should be run under the best angles determined by established analytical relationship to reduce the cost of removal of wood
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JUSTIFICATION OF SUNFLOWER SEED CLEANING SCHEME ON AIR-SIEVE GRAIN CLEANING MACHINES
DescriptionA set of actions aimed at preserving seed quality is the task of primary importance, which is expected to produce effective results. To implement this task it is necessary to prepare high-quality seeds by cleaning and sorting sunflower seeds on air-sieve grain cleaning machines. To determine the rational scheme of cleaning sunflower seed piles of the ‘Lakomka’ variety on the air-sieve grain cleaning machine ‘MVU-1500’ a qualitative analysis has been carried out. Cleaning sunflower seeds is carried out by an air stream by one or two sieves for separating large impurities and by two sieves, one of which separates milled seeds into the overseeding ,with the second dividing the whole seeds. In such a scheme of cleaning sunflower seeds, purity corresponds to the 3rd class of seed material and has some disadvantages. The disadvantages are as follows: the gathering seeds in sieve Ø5.0 have low individual weight and the sieves show low quality of work. To facilitate the work of the sowing sieves a grading sieve is installed, which will separate 50% of the seeds into the gathering. The size of the openings in the grading sieve is selected with the help of the correlation table. The sieve for sunflower seed variety ‘Lakomka ‘will be Ø 3.6, which will select the most valuable seeds with weight above 90 g from the purified material thus improving the productivity and performance of the sowing sieves. A promising scheme of cleaning sunflower seeds is the air flow rate equal to 4.43 m/s, with one grading sieve of Ø 3.6 and two sieves of Ø 7 and Ø 3.6 mm in grain cleaning machines that will allow you to get high quality seed material that meets the requirements of GOST(Russian national standard) for seed material
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Description
In the article, we present existing approaches to the study of the optimal composition of technological systems. We have justified a new method of improving the reliability and the efficiency of technological systems of grain harvesting based on application of mass service theory. An engineering methodology for the substantiation of structure of the technological complex of agro-climatic conditions has been developed. In this case, the basis is the method proposed by S. D. Shepelev and G. A. Okuneva. To justify the structure of the technological complex of agro-climatic conditions of the Krasnodar region we have developed a mathematical optimization model, as criteria of which the losses from downtime of combine harvesters and transport vehicles have been taken. On the basis of the developed technique co-dependence on the number of combine harvesters «Torum-740» from the capacity of vehicles and coefficient for their use for the Northern zone of the Krasnodar region has been found
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FEATURES OF THE SUBSTANTIATION OF MEANS FOR ANTIEROSION PROCESSING OF SOIL
DescriptionThis article considers factors which are necessary for considering at application of the minimum processing of soil. The scheme of power saving processing of soil and the scheme of the minimum processing of soil in a crop rotation with good water penetration are offered