№ 99(5), May, 2014
Public date: 30.05.2014
Archive of journal: Articles count 106, 257 kb
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Description
In this article, the software that allows determining the ranges of deviations of a motor anchor chain current and angular velocity deviations of a DC electric drive with a thyristor converter in the continuous currents mode has been presented
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COMPARISON OF RADIATION SOURCES FOR PLANT GROWING BY LUMINOUS ENERGY UNIT'S COSTS AND ANALOGS
DescriptionThe article considers the method of comparison of radiation sources for plant growing by photosynthetic energy units or analogs costs, evaluation of critical values photosynthetic active radiation efficiency at which light-emitting diodes comparable by photosynthetic energy unit's costs with the most common alternative sources for irradiation of plants – high pressure sodium lamps
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GRAVITY FIELD IN THE VICINITY OF STARS AND GEOMETRIC TURBULENCE
01.00.00 Physical-mathematical sciences
DescriptionIn this article, the solutions of Einstein's equations for empty space, describing the gravitational field near the Sunlike star have been investigated. We have accounted the own field of the star, the motion of the star around the galactic center, the motion of the galaxy relative to the center of the local supercluster and the expansion of the Universe. The resulting gravitational field near the star has a complex structure, which leads to large-scale geometric turbulence linking large and small scales in this problem
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Description
There is a presentation of the operation analysis of the harvesting-transportation complex with using the system of collecting and processing information and there is estimation of its impact on the complex productiveness
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SIMULATION OF EARTH'S POLES DYNAMICS USING ASK-ANALYSIS
DescriptionBased on local semantic information models, we have examined the dependence of the dynamics of the displacement of the pole positions of celestial objects. We have also developed and differentiated an analysis of ASK-pole modeling of dynamics within sixty-year cycles of reference points and substantiated reasons for the population inversion and singular states in the dynamics of the pole
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SUMMARY OF EXPERIMENTAL RESEARCH OF GASOLINE AND OIL FRACTIONS
DescriptionIn the article we present the results of pilot studies of petrol and oil fractions; their main physical and chemical properties, density and DNP, a liquid phase, two-phase area, critical area and boundary curves are considered