05.00.00 Technical science
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Description
This article presents the original data for study designed to determine the effect of individual parameters of machines and technological process of round timber harvesting on the energy consumption data. These data allow us to determine the frontier efficiency of individual processing steps as well as of timber harvesting generally
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INFLUENCE OF STARTING CULTURES IN HAM PRODUCTION TECHNOLOGY
DescriptionFor today, creation of the technologies, allowing lowering the cost price of manufacture of meat products, thus guaranteeing the consumer the same set of quality standards is very important. Due to biotechnology development, working out and introduction of the new technologies focused on an intensification of a complex of difficult biochemical transformations which proceed in meat raw materials by manufacture of sausage products became possible
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STUDY OF VEGETABLE CROPS HYDROSEEDING WITH THE APPLICATIONOF ELECTROACTIVATED WATER
DescriptionThe article shows the results of laboratory and field experimental research of the study of hydroseeding of different vegetables varieties with tap water and elec-troactivated water. It also shows the experimental setup of hydroseeding and electroactivator machines developed by the authors
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INFLUENCE OF A WAY OF CRUSHING ON ACTIVITY OF INGREDIENTS OF CONCRETE MIX
DescriptionThe article presents the results of the researches of the influence of a way of crushing on activity of ingredients of concrete mix. It is shown that sand crushing by method of free kick in a planetary mill of AGO-2 allows not only to raise its specific surface, to receive the demanded particle size distribution, but also to improve quality of a surface of particles by removal, destruction of superficial inactive films. On a new surface of sand excess energy concentrates, the active centers are formed and there is a fixing of germs of new growths of products of hydration of cement in a place of an exit of dislocations to surfaces of crystals of sand that leads to substantial increase of chemical activity and reactionary ability of sand
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REGULARITIES OF DEFLECTION IN THE DIAGONAL AND RADIAL TIRES OF THE GRAIN COMBINE PROPULSIONS
DescriptionThe aim of the study is to investigate the regularities of deflection in the diagonal and radial tires for the grain combine propulsions of high productivity. The research method is experimental. The "tire tester" and specially designed devices for revealing the deflections of the inner and outer tube relative to the rim in the circumferential and radial directions have been used. The outcome indices of the pneumatic-tired wheel are determined with the tire capability to deflect so, that at low - hysteresis losses in the rubber-cord casing and its acceptable tensions, based on a resource, the largest area of contact with supporting base would be created. This circumstance acquires the particular significance developing tires for grain combines of high performance, the deflection regularities of which are poorly studied at present. The analysis of experimental studies showed the feasibility of using the grain combine propulsions instead of the diagonal radial tires of the same size. The resistance to rolling of radial tires 30.5 R-32 is lower than in diagonal tires 30.5 L-32, and the developed contact area due to the increase of length is higher, which reduces sealing effect on the soil
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Description
The article discusses the ways of working of an intelligent system based on hybridization of several technologies of intelligent computations. A model of the hybrid system is represented. The effectiveness of the proposed approach has been proved
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ESTIMATES OF THE INTENSITY OF ARTIFICIAL LIGHTING OF A LED IRRADIATOR OF LETTUCE IN GREENHOUSES
DescriptionCurrently, artificial irradiation of lettuce seedlings is produced with gas discharge lamps that have a low energy efficiency and a significant proportion of the spectrum in the green region. LED chips can be chosen in such a way as to ensure maximum photosynthesis of lettuce with optimal consumption of electrical energy
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METHODS OF ASSESSING THE COMPETENCE OF EXPERTS
DescriptionThe article is devoted to an actual problem: increasing of reliability of expert estimates, due to attraction in group of the most competent experts for carrying out examination. The analysis of application of expert estimation in the field of operation of corporate and telecommunication networks is provided in the article. The technique of an assessment of competence of experts is offered. When assessing the competence of experts the following factors were considered: specialization of the expert, an experience and experience of its work in the field, scientific qualification, existence of scientific works on a perspective of carrying out examination. For identification of a priority of factors at determination of competence of experts it is offered to use a method of the analysis of hierarchies. The necessary number of experts for carrying out examination of objects is defined on the basis of application of the statistical analysis
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Description
The article presents a comparative assessment and peculiarities of nuclear magnetic relaxation characteristics of rapeseed and sunflower lecithin. It was established, that lecithin’s nuclear magnetic relaxation characteristics, namely, protons’ spin-spin relaxation time and amplitudes of nuclear magnetic relaxation signals of lecithin components, depend on content of oil’s fat acids and phospholipids, contained in the lecithin. Comparative assessment of protons’ spin-spin relaxation time of rapeseed and sunflower lecithin components showed, that for their identification protons’ spin-spin relaxation time of the lecithin’ first component at 40°C and 60°C temperature, when differences in values of protons’ spin-spin relaxation time of the sunflower and rapeseed lecithin’ first component are most obvious, should be used as an analytical parameter. Comparative assessment of amplitudes of proton’s NMR signals of sunflower and rapeseed lecithin components showed, that relations, established earlier for sunflower lecithin between mass share of phospholipids (substances insoluble in acetone) and the sum of amplitudes of proton’s NMR signals of the third and fourth components, cannot be applied to rapeseed lecithin; that is for the development of an express method for determination of mass share of substances insoluble in acetone (phospholipids) in rapeseed lecithin, it is necessary to carry out additional research with the purpose of clarifying the mentioned relations
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MODELING OF THE PROCESS OF STABILIZATION OF PRESSURE OF STEAM IN THE STEAM BOILER
DescriptionThe article submits a mathematical dynamic model of varying pressure of the steam, depending on fuel supplying in the boilers