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.

The article presents the developed methodology of intellectualization of industrial production of the oil and gas industry of the Republic of Kazakhstan on the basis of intelligent optimization algorithms, which provides a solution to the problems of synthesis of standard regulators using modern microprocessor technology. As an example, the distributed control system CENTUM VP from Yokogawa is used. To formulate the intellectualization procedure, the task is to find the parameters of a typical controller that provide the extremum of the objective function (quality criterion), using intelligent algorithms of global search optimization. In particular, the need to synthesize a proportional-integral-differential regulator based on an evolutionary population algorithm that minimizes the selected quadratic integral quality score. As intelligent algorithms, it is also proposed to use global search engine optimization algorithms that provide a solution to the problem based on artificial intelligence methods.

In order to develop the compositions of ceramic bricks, the influence of phosphoric slag on the properties of Langer clay is investigated in this work. Phosphoric slag in the amount of 20, 30 and 40 percent was added to Hungarian clay and standard samples-cylinders were prepared. The samples were fired at temperatures of 1000, 1100 and 1150 оС. When determining the properties of the fired samples, the influence of the amount of phosphoric slag and the value of the firing temperature was observed. Experimentally, the average density of samples subjected to firing at an optimal temperature was 1870-2100 kg/m3, and the compressive strength according to the test results was 24.3 - 29.89 MPa. A sample with the addition of 30% phosphoric slag and obtained by firing at a temperature of 1100 оC is considered optimal.

A new algorithm is proposed, which is an alternative to the run-through method for the numerical solution of second-order linear differential equations with fixed boundary conditions. The algorithm has a wider scope of applicability than the well-known run-through method and works for both positive and negative coefficients of the equation. The main purpose of this work is to obtain recurrent formulas similar to the run-through formulas for the numerical solution of the boundary value problem of second-order differential equations. The most important question is whether there are run-through formulas when the coefficient in the solution in the equation has a negative sign or is alternating. The paper shows the consistency and computational stability of the difference schemes represented by the proposed recurrent formulas. The results obtained in this article are confirmed by the calculated data.

This article uses bench, conveyor and aggregate methods of production of reinforced concrete products. The methods of transportation, delivery and convenient storage of reinforced concrete products with the use of chemical and mineral additives included in the production of reinforced concrete products are shown, a mathematical model of the development of reinforced concrete products is proposed. Methods of mathematical modeling, automatic control theory and algorithms are used. Modeling of production processes and system analysis uses professional mathematical packages. The mathematical model of the dosing process provides the establishment of a mathematical dependence of the mass yield of ingredients on the control effects, for different dispensers the calculation formulas of their performance are different. Depending on the change in demand, a model of the production process of finished precast concrete is being developed, an automated control system for the production of precast concrete with variable control parameters is provided.