The general characteristics of the innovative RAID-60 data storage system, which combines the best aspects of RAID-6 and RAID-0E technologies, as well as the reliability model of this data storage sys-tem, are presented. The main purpose of this connection is to provide outstanding performance with maximum data redundancy. The arti-cle discusses in detail the structural analysis, advantages and various scenarios for the use of the specified RAID-60 data storage system and the proposed model of its reliability. An important aspect is also the comparison of the RAID-60 system with other widespread vari-ants of data storage systems, such as RAID-0, RAID-1 and RAID-5, as well as with the reliability models of these systems. Particular at-tention is paid to the formula that allows you to calculate the average operating time to failure of a disk array. Also, for completeness of the analysis, attention is paid to plotting the probability of a RAID-60 failure (P(t)) over time (t). This graph is an important tool for visu-alizing the dynamics of reliability of data storage systems.

Keywords: RAID-60, reliability, disk array, data redundancy, manufacturer, parity blocks, data storage

An original approach to describe airflow in the thin conic diffusor is suggested. It is based on approximate analytic solution of continuity equation. In addition simplified model of turbulence is combined. Reliability of derived formula is confirmed by comparison with finite-element solution for designed experimental setup. The elaboration is intended to direct computer simulation of multiphase flow.

Keywords: dust-air mixture, aspiration systems, turbulence, finite element modeling, separation diffuser, digital twin

Permafrost occupies about 25 percent of the world's area and spreads across the north of America, Europe, Asia, as well as the islands of the Arctic Ocean and Antarctica. In Russia, a considerable part of the population lives and works in the regions of the Far North, where mining is rapidly developing in conditions of permafrost. This is where the erection of the foundations is an important issue.

Keywords: pile foundations, permafrost, drilling, oil production, land, territory, deformations, soil, installation, screw piles

It has been established that the concentration of cholesterol mesogenic esters in lubricants ambiguously affects the microrelief parameters and the tribotechnical characteristics of a steel 45 – steel 45 friction pair. %, the best indicators of friction and wear of metals, on the contrary, are realized with an increase in the concentration of cholesterol esters in lubricating compositions.

Keywords: lubricant, cholesteric liquid crystal, microrelief on friction surface, coefficient of friction

This article considered individual and unidirectional cooperative mass transfer of two components with a various in the surface-active properties in extraction system carbon tetrachloride - 4% aqueous solution of potassium iodide in the flat interface in the conditions of spontaneous interphase convection. Studied the interaction flow of components in unidirectional cooperative mass transfer on the intensity of mass transfer each other in the conditions of spontaneous interphase convection. Unidirectional cooperative mass transfer acetic acid and iodine increase mass transfer iodine coefficient as compared to its individual mass transfer.

Keywords: spontaneous interfacial convection, Marangoni effect, the cooperative mass transfer, extraction, the mass transfer coefficient, acetic acid, iodine, carbon tetrachloride, the intensity of mass transfer

The paper provides information on the results of ordination analysis of Don basin steppes

Keywords: ordination, Don basin, steppes

A new device is offered for the analysis of motor oil contamination of the internal combustion engine with dispersed particles. Optical and ultrasonic methods for analyzing contamination of motor oils are used to obtain more informative data to estimate the concentration of pollutants in the device.  

Keywords: tribomonitoring, electrooptical device, the internal combustion engine, motor oils, methods for analyzing contamination

In this work new circuit solutions of R-S-latch and D-trigger having nonvolatile electrically programmable memory and nonvolatile shift register are presented. It shows that nonvolatile R-S-latch can be effectively used as a memory cell and simultaneously as write and read circuits for it, thus it makes possible to increase reliability of read operation from EEPROM at the expense of differential read for every bit.

Keywords: CMOS, R-S-latch, D-tirgger, shift register, EEPROM, nonvolatile memory

This paper outlines the implementation of computer model of second-order visual mechanisms that are specific to spatial contrast modulations, and represents the results of testing the model. Computer simulation is based on "Filter-Rectify-Filter" model with some important additions. The inhibitory parts of receptive field of simulated mechanism are non-selective to orientation and spatial frequency of texture elements. Texture modulated by orientation or spatial frequency does not reduce flank inhibition and does not activate the mechanism. Unmodulated texture  also does not cause activation of the filter because the flanking inhibition will be equal to or exceed the excitation. However, increasing the contrast in the center and reduction it on the flanks leads to the activation of the second order mechanism.

Keywords: Second order visual mechanisms, image filtering, texture, spatial modulation, computer simulation

This article is devoted to reviewing of crusted composition, based on natural minerals: magnesium chloride (bischofite) and glauconite, as a method of providing an ecological and technical security at traffic areas. In one of the main parametres of road safety - the coefficient of coupling revealed the advantages of using of eco composition over other commonly used anti-icing agents.

Keywords: crusted eco composition, icemelter, coefficient of adhesion, accident rate, ecological security, technical security

The article deals with the design of experiments for dispersed particles capturing in elektrocyclone. The autors gives planning matrix calculation, the regression equation based on the aerosol velocity and the initial concentration of the aerosol and plot of function.

Keywords: gas cleaning; cyclone; elektrocyclon; fly ash

In article findings of investigation of process of drying of conversion lime carbonate in an air-operated tube-dryer are resulted. For the first time dependences of moisture content in a tube-dryer from reference temperature of air or gases and from length of a tube-dryer are received. Results of researches can be used for designing of tubes-dryers for large-tonnage productions of conversion lime carbonate. 

Keywords: conversion lime carbonate, drying, tube-dryer

Article focuses on the use of statistical models to predict tolerability surgery using intracavitary hyperthermic chemotherapy (IHCT) and the definition of indications and contraindications to perform operations and tolerability for patients with cancer based on the hemostatic patient. This technique allows a high enough accuracy to prediction portability planned surgery, duration of disease-free period, the period and quality of life in the immediate and late postoperative period.Improve treatment of patients with malignant tumors of the abdomen and pelvis, is one of the priorities of modern health care. Relevance of various parameters of immunity, clinical and biological parameters of homeostasis and prognosis of malignant disease in humans will significantly reduce the proportion of late diagnoses of relapses. Recently there has been increased research to find a method of complex cytoreductive surgery and the use of cytotoxic drugs, and physical therapies, one of which is a local intraoperative hyperthermic chemotherapy. With the help of statistical methods has been studied the degree of influence on the parameters IHCT immunity and an estimate of the nature of the immunological changes in different types of surgery. Methods of binary logistic regression analysis was calculated diskriminatnogo forecast portability operation - patient survival probability. Based on the method of multiple regression were obtained algorithms calculate the duration of life of patients after surgery, and the duration of DFS. Studies based on the factor analysis showed that the main factors affecting the prognosis of disease-free period and the period of life are the morphological structure of the tumor volume cytoreduction, the sum of your immune system and cancer markers. Peritoneal cancer index, sex and age of the patient does not have a significant effect on these parameters. Thus, the introduction into clinical practice of the proposed computer systems and statistical forecasting models allow physicians to objectively evaluate the performance of homeostasis, the portability of the planned surgery, more accurately predict the course of the cancer disease and the likelihood of recurrence of the disease and the duration and quality of life.

Keywords: statistics, modeling, forecasting, surgery, colorectal cancer, disease-free life expectancy, tolerance of surgery, immunological parameters, factor analysis, regression equation

The device for uninterrupted measurement of shaft wearing out by stuffing tightening is offered. The device for investigating sealing tightenings is worked out. Opticoelectronic systems are used for increasing the accuracy of measuring and for the purpose of uninterrupted monitoring in the construction of both devices.

Keywords: tribomonitoring, machines and mechanisms, optoelectronics, wear, seals

The article presents the results of experimental research of the re-entrainment reduction in the electrocyclone. The authors shows an increase in the collection efficiency of ash up to 99.5% and reduction of entrainment in 4 times when profiled elements was install  on collection electrode surface

Keywords: gas dust cleaning, electrocyclone, re-entrainment, collection efficiency, ash from thermal power plants