Article is devoted to the results of modeling-a certain mathematical function that describes the behavior of the object of study, abstracting from the internal structure of the real substrate. Materials and Methods: discusses the construction of models of experimental dependencies extruding abnormally viscous fluids, includes the following stages: clarification, depending on the specific tasks optimized parameters (specific energy consumption in the extrusion process, the pressure in predatrice area, complex organoleptic quality score, etc.); the choice of factors determining the variability of the optimized parameters (initial moisture of the product, the frequency of rotation of the screw, the living section of the matrix, etc.); the selection of intervals of change of factors; recruitment plan and the conditions of the experiment; analysis of experiment data and construction of mathematical model of dependencies of optimized parameters on selected factors.Results: when planning an experiment, the conditions for conducting experiments, obtaining reliable and accurate information about the object, with minimal effort, providing information in a convenient form and quantitative accuracy assessment. Discussion: the problem of optimization of the studied process was solved, which allows to find such modes of the extruder, which would be in a wide range of changes in the input parameters of the product amounted to a minimum of specific energy consumption, the optimal pressure in the pre-matrix zone and the maximum complex organo-leptic quality index. Conclusion: the obtained results reveal the influence of individual factors on the operation of extruders and can be used in the design and optimization of their operation. They will have an impact on the development of scientific, scientific, technical and technological directions in the field of creating new food products with programmable properties (including therapeutic and prophylactic action). Made on their basis, experimental design will reveal new technological solutions in the field of creation of new generation technological equipment for various branches of the food industry. The developed recommendations and proposals for the use of the results are already used in the ongoing innovative projects for the creation of extruders, as well as other equipment.

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The results of pH measurement results are summarized for 1994-2004. These were obtained from the snow pollution and acidity monitoring network in the Russian Federation. A map of acid-base characteristics is compiled for the Russian territory. The zones of the most frequent cases of snow acidification are singled out. Dependence of pH values on the concentration of acid-forming anions neutralizing cation acids is established based on the ion balance analysis.We consider the first generalization of pH measurement results from the snow pollution and acidification monitoring network in Russia for a ten-year observational period (1994)(1995)(1996)(1997)(1998)(1999)(2000)(2001)(2002)(2003)(2004). During this period, at 420 stationary routes, 3847 pH measurements were performed in the snow, at the time of its maximum water equivalent. Thus, the integral characteristics of acid-base precipitation properties were recorded during the entire wintertime with a steady snow cover. In most Russian regions, this period lasts from 4 to 5 months; in the Arctic zone of continental Russia, it lasts from 6 to 8 months.First and foremost, one should note the temporal inhomogeneity of acid-base characteristics of the snow cover, recorded at the same station in different years. There are few stations that would have recorded on a permanent basis the same acidic, neutral, or alkaline characteristics for the observational period considered. Generally, we observe substantial variations in the pH values. Therefore, spatial zoning, i.e., identification of zones in accordance with the acid-base snow composition characteristics, is possible only in accordance with the frequency of any pH cases.For charting, we selected the following three gradations of the pH values: the range from 4.0 to 5.6 is indicative of acidification tendencies; from 5.6 to 7.0 presents a background level, slightly acid or neutral snow properties; from 7.0 to 8.5 is characteristic of neutral and slightly alkaline snow properties. A scheme-diagram in Fig. 1 shows the spatial distribution of the specified pH gradations with a recurrence of 50% and higher for more than 10 years of observations. When compiling the chart, one ignored the data obtained near the pollution source, where the pH indicator frequently was higher, because acid-forming compounds were neutralized by cations of the same origin. Figures 2 and 3 show the character of the pH distribution in the regions. The table contains the cases of the snow cover acidification (percent of the total number of observations).The acidification is observed in the following regions: in northern Karelia and on the Kola Peninsula, in the Southern and Northern Urals, and in the north of the Tyumen oblast. These are the largest areas. In smaller areas, the enhanced frequency of the snow cover acidification is observed on Sakhalin Island and in Chukotka (stations Pevek and Cherskii). In all these regions, with pH < 5.6, the values of 5.2-5.6 are observed in 20-37% of the total number of observations.The zones of the enhanced freq...