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Orenburg State University january 23, 2022   RU/EN
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Efremov I.V., Gorshenina E.L., Solopova V.A., Rakhimova N.N., Ryabykh E.I., Chernova O.N.
COMPREHENSIVE ASSESSMENT AND RISK MIGRATION ABILITY OF HEAVY METAL CONTAMINATION OF SOIL AND VEGETATION COMPONENT SYSTEMS [№ 13 ' 2015]
In this paper, when considering the transport processes and substances such as heavy metals in the components of soil-plant systems assumed that this process is probabilistic in nature. The second assumption we adopted the current status of the independence of the system components from its previous state. This allowed us to consider the soil-plant system as a Markov chain with a finite number of states. The probabilities of a state determines the intensity of transitions substances system components. On the basis of the constructed mathematical models to calculate the risk of contamination of the soil, aboveground and root systems of plants with heavy metals. The risk of contamination of components of soil-plant system shows the likelihood that heavy metals accumulate in the soil, the root system and aboveground plant parts. The intensity of transition shows the magnitude and direction of transport of substances (heavy metal) the components of the system. Integral indicators characterize the overall distribution of heavy metals in the soil-plant-specific system. The differential indicator shows the distribution of one or the other metal in the soil-plant system.

Savchenkova E.E., Solopova V.A., Rahimova N.N.
THE SLOWED-DOWN FLUORESCENCE AS THE METHOD OF RESEARCH OF CHANGE OF AGROCHEMICAL INDICATORS OF THE SOIL COVER AT HEAT TREATMENT (ON THE EXAMPLE OF THE STEPPE ZONE OF ORENBURG OBLAST) [№ 10 ' 2015]
On the basis of a pilot study the method of research of change of agrochemical indicators of a soil cover of the Steppe zone of Orenburg Oblast at its heat treatment is offered. Sampling of soils when carrying out experiments was carried out by an envelope method on different profiles of the horizons, tests of soils were exposed to heat treatment at temperatures from 200 to 800 °C within 30 min. and were analyzed on installation for registration of the slowed-down fluorescence. Experimental groups of soils were also exposed to the chemical analysis on the maintenance of the main agrochemical indicators. The made experiments showed that for all studied types of soils irrespective of the modes of temperature influence the exponential law of attenuation of fluorescence is carried out, but all types of soils are various on an indicator of intensity of a luminescence and coefficient of attenuation. The soil which is thermally processed in the range from 400 to 600 °C is characterized by the raised maintenance of mobile forms of phosphorus and potassium, and it рН increases with temperature increase. In work the algorithm of technology of restoration of fertility of the soil at introduction of the calcinated soil as fertilizer is presented, taking into account рН and the maintenance of nutritious elements in it on the basis of which it is possible to carry out melioration and recultivation of the soils broken as a result of an industrial erosion.

Solopova V.A., Efremov I.V., Yanbulatov I.I.
FEATURES OF RECEIVING WATER BY CONDENSATION ON TERRITORY OF THE ORENBURG REGION [№ 6 ' 2015]
One of the sources of fresh water — water in air did not investigate yet. Climate of the Orenburg region is abruptly continental. Warm season at night moisture condensate from cooled air to form of dew. The intensity of dew formation depends on the humidity, diurnal temperature difference, wind speed and orientation of the surface of the precipitation. To collect condensed water from ancient times to the present day systems with large surface perceptible with artificially created centers of condensation are designed. Based on the results of the comparative analysis of the average expected performance systems to producing water from the air by condensation for different localities of the Orenburg region we concluded that the greatest results may be obtained in the vicinity of Sol-Iletsk. Analysis data for this settlement shows that the most conducive period is July 2013. Calculated for this month amount of water 0,002 liters from 1 kg of air per day or 0,00155 liters from 1 m3 of air. his value a little also testifies to low efficiency of use of a method of natural condensation for receiving fresh water in the territory of the Orenburg region. Respectively, that installation of natural condensation of water gave more than 1 liter per day it is necessary to carry out compulsory air circulation along the besieging surface not less than 645 m3/days.

Solopova V.A., Popov V.P., Sidorenko G.A., Zinyukhina A.G., Zinyukhin G.B., Vasilevskaya S.P.
STUDY OF A CHANGE OF ALIMENTARY PRODUCTS'FORMULATION AS AN IMPROVING FACTOR OF TECHNOLOGY'S SECURITY [№ 9 ' 2012]
On the basis of experimental study, we suggested a way of the replacement of the part of the flour for the pumpkin paste to not only improve the security of technology, but also to get a high quality product. We evaluated the physicochemical properties of pasta with the help of the developed complex index of quality; we carried out an assessment of organoleptic characteristics by the method of an expert assessment and determined the complex index of the quality of one of the production's stages.


Editor-in-chief
Sergey Aleksandrovich
MIROSHNIKOV

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© Электронное периодическое издание: ВЕСТНИК ОГУ on-line (VESTNIK OSU on-line), ISSN on-line 1814-6465
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Учредитель: Оренбургский государственный университет (ОГУ)
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