In recent years the total area of the solid municipal waste landfills and dumpsites, including the overloaded ones, which violate the norms of ecological safety and are the objects of intensive ecological loading, that may cause the pollution of the environment with chemical substances, contaminating soil, in particular with the lead has greatly increased. Determination of the regression dependence of lead concentration in the soil on the distance to solid municipal waste landfills is an important scientific-technical problem.Objective of the research is to determine the regressive dependence of lead concentration in the soil on the distance to solid municipal waste landfills. During the research the method of regressive analysis of the results of single-factor experiments and other pair dependences with the selection of the rational type of function from sixteen most widely spread variants by the criterion of maximum value of the correlation factor has been used. Regression was performed on the base of the linearizing transformations, which enable to reduce the nonlinear dependence in to linear one. Determination of the coefficients of the regression equations was carried out by means of the least squares method, applying the developed computer program "RegAnaliz", protected by the Certificate of the State registration of the rights to the copyright object.Adequate regressive power dependence of the lead concentration in the soil on the distance to solid municipal waste landfills was obtained, the dependence can be used for the determination of the level of chemical pollution of the soil with lead. Graphic interpretation of the lead concentration dependence in the soil on the distance to solid municipal waste landfill was constructed, it enables to illustrate this dependence and show the coincidence of the theoretical results with actual results on the level of 0.93493. It is established that the distance from the landfill of solid municipal waste, where the lead pollution of the soil does not exceed the background level (boundary of mild contamination area), is 526 m.
Solid industrial waste, in particular, metal working waste, can be widely used in the construction sphere for obtaining valuable materials for the production of the construction materials with the protective qualities against electromagnetic radiation and static electricity, for manufacturing of the anode earthing, etc. That is why, determination of the regression dependence, describing the dynamics of the scrap volume growth in Ukraine is an actual scientific-engineering problem. Aim of the research is determination of the regression dependence, which describes the dynamics of the scrap volume growth in Ukraine and can be used for the prediction of these volumes. In the process of the research the method of the regressive analysis of the results of the single factor experiments and other pairwise dependences with the selection of the rational type of the function from the sixteen most widely used variants by the criterion of maximum value of the correlation coefficient was applied. Regression was carried out on the base of the linearized transformations, which allow to reduce the non-linear dependence to linear one. Determination of the coefficients of the regression equations was carried out applying the method of the least squares by means of the developed computer program "RegAnaliz", protected by the Certificate of theState Registration of the rights to the copyright object. Adequate regression power dependence is obtained, it describes the dynamics of the scrap volume formation in Ukraine and can be used for the prediction of these volumes. Graphic dependence, describing the dynamics of the scrap formation volume in Ukraine is constructed, it enables to illustrate this dynamics and show sufficient coincidence of the theoretical results with actual results. It is established that in Ukraine in the period of 2017 -2020 volumes of scrap formation increased by hyperbolic dependence. Using the obtained dependence it is forecast that the volumes of the scrap formation in Ukraine in 2030 at present rate of growth will increase to 1132 thousand tons.
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