Due to the change in the composition of the processed raw materials at the Balkhash Copper Plant (BCP), it is required to adjust the technology used to melt copper sulfide concentrates in the Vanyukov furnace (VF). It is promising to use additional carbon-containing fuel that burns in the bubbling zone increasing the melting temperature and partially reducing slag oxides to ensure the required autogenousity and melting temperature. However, part of the solid fuel does not burn in the bubbling zone with an oxygen-containing blast and does not participate in reduction reactions with slag oxides that result in its accumulation on the surface of the slag melt. The results of the industrial tests performed earlier in the BCP to feed coal dust through tuyeres to the VF with the purpose to maintain the required temperature of the slag melt and satisfactory separation of slag and matte were considered. The reasons for the unstable operation of the tested system to feed coal dust to the VF through tuyeres were determined, and directions for its improvement were outlined. Laboratory experiments were performed to simulate the behavior of coal dust in the quiet zone of the VF. The regularities of the distribution of coal dust were determined, and it was shown that coal dust was concentrated on the slag melt surface. Thus, coal dust that did not react with blast oxygen or oxides of the slag melt in the bubbling zone was carried to the surface of the slag melt, promoted the formation of a viscous crust, and then practically did not interact with the slag melt and becomes practically useless.

This article reflects the results of spectral analysis for use in production as a second product by creating a briquette of dust formed during the melting of ferrosilicoaluminium alloy. Briquettes made according to two samples were made with isothermal retention in the Tamman furnace and spectral analysis of the resulting products was carried out. As a result of the analysis, it was found that the dust contains the main silicon and aluminum oxides not in the form of kaolinite (Al2O3∙2SiO2∙2H2O), but separately in the form of SiO2 and Al2O3, as well as the absence of mullite (3Al2O3∙2SiO2) during heating to a temperature of 1600°C and the formation of silicon carbide SiC at once, as well as a total of 43.73% carbide. As a result, raw materials were obtained that optimize the electric model of the melting process, solving environmental and economic problems with the return to production of the left dust as briquette waste.

This article discusses modern technologies for protecting corporate networks. Using corporate network protection technologies, software developers can guarantee the security of software where it will be used. But there are attacks for which a network system engineer should have the best means of protection.

The article describes the role of the theory of differential equations in modern mathematics and its application. To describe its place in modern mathematical science, first of all, the main features of the theory of differential equations, consisting of two broad areas of mathematics: the theory of ordinary differential equations and the theory of partial differential equations, are highlighted. The first feature of this theory is its close connection with applications. It is noted that the theory of differential equations is primarily based on the formulation and understanding of quantitative and qualitative laws that make up the content of the natural sciences as an integral part of natural science. The article also emphasizes the second feature of the theory of differential equations, its connection with other areas of mathematics, such as functional analysis, algebra and probability theory. The purpose of this article is to identify modern problems in the theory of differential equations and to construct a system of corresponding problems.

This article analyzes the results of a numerical study of the effect of the initial injection mass and the initial temperature of the oxidizer on the tridecane (C13H28) combustion process. During the research work, the KIVA software package was used. Based on the results of the performed numerical simulation, the distribution of the temperature of the fuel droplets and the concentration of CO2 were obtained for various values of the mass of injected liquid fuel in the combustion chamber. After analyzing the results of the study, it turned out that the effective initial mass of fuel injection is 9 mg. Having studied the dependence of the maximum temperature and concentration of carbon dioxide in the combustion chamber, formed as a result of fuel combustion, on the initial temperature of the oxidizer in the combustion chamber, it was concluded that the value of the effective initial temperature of the oxidizer is 900 K.

At the present time, during the construction of automobile roads, one of the main indicators of the quality of the road is the geodetic calculation of the accuracy of the altitudinal position. Examples of permissible errors of maximum deviations are given, taking into account the accuracy of technological processes in the construction of structural layers of automobile road surfaces. In addition, these calculations make it possible to determine with high accuracy the root-mean-square errors of technological processes and the normative-permissible maximum errors of the altitudinal position of the structural layers of the roadbed. Accuracy standards for automobile road surfaces are regulated by standards (GOSTs), building codes and regulations (SNiP), design and engineering documentations.

The work is devoted to the determination of reservoir properties of carbonate rocks, using new modern GIW methods (geophysical investigations of wells). The main approaches that determine the physical and mechanical properties (PHMP) of reservoir rocks, the acoustic anisotropy of rocks associated with cavernosity and fracturing, as well as the permeability of rocks, as well as the characteristics of field productivity, the main properties of formations, liquids and gases saturating productive horizons are specified. The relevance of the work is due to the determination of reservoir properties in fractured-cavernous and fractured carbonate rocks of the "Zhanazhol Yuzhny" deposit using new GIW methods. It should be emphasized that the use of the recommended modern GIW methods makes it possible to more accurately determine the parameters and reservoir properties (FCP) of complex carbonate deposits.

Understanding and managing groundwater resources requires the integration of a large amount of high-quality data from various sources. Due to the limitations in access to information related to groundwater and subsurface conditions, the collection of available existing information is crucial when conducting a successful hydrogeological study. An approach to the development of a groundwater database is presented here. This spatial geodata database, implemented in GIS, is associated with a relational one. Since the basis of the information and analytical system for monitoring irrigated lands is a database, it allows the user to request relevant information. In addition, stratigraphic data stored in a spatial database can be used to build 3D models of underground structures. To store and analyze such a large amount of information, a system organization and automation of processing of many processes are required, so information support is an important part of monitoring.

In recent years, low-mountain massifs of Central Kazakhstan have been the least studied areas. Flora is an integral part of geosystems and is the main indicator of natural and anthropogenic changes. The objective of this paper is to review the use of bioresources in the Karkaraly Lowlands and Karkaraly State National Nature Park (KSNNP). The descriptive method of research was used while writing this paper, the first part of which focuses on the physical and geographical description of the area, as well as the habitat. Further, the author focuses on the method of ecological assessment of the forest area and the method for assessing biodiversity, and their importance. To preserve the phytocenosis and fauna in the Karkaraly Lowlands, it is necessary to assess the current state of biodiversity, assess their structure and the potential for rational use. While writing the article, the causes of environmental tensions in the KSNNP area of both anthropogenic and natural origin were outlined. The review of the use of the area's bioresources provides an opportunity to monitor biodiversity in KSNNP in the future. The author concludes the article with a list of recommendations to address the problems of bioresources use in the Karkaraly Mountains.

Information about copper deposits of Kazakhstan, development of which is carried out in the Saryarka region, and its role in the development of the mining industry are considered in the article. Geological, structural and tectonic features of the deposits are presented. Research results on improvement methods of studying and geomechanical processes management in the development of mineral resources are presented. It is shown that the problem of geomechanical processes management can be solved on the basis of a methodology for rock condition geomonitoring considered in this article, which provides comprehensive accounting and analysis of all-natural and technogenic factors, as well as use of control tools developed by the authors. The article presents technical solutions to ensure operational safety during the development of Saryarka region field reserves, which occur in difficult mining and geological conditions. Ore bodies of the deposit have different sizes and are located at different depths, therefore, seismic surveys are carried out. The geodetic network of provisional seismic surveys at the field has been substantiated. It is proposed to conduct surveys using modern geodetic instruments, such as satellite technologies, electronic, digital geodetic instruments. The geodetic survey methods proposed by the authors provide information on the bowels of the earth with a high degree of accuracy.