Methylammonium lead iodide perovskite materials have been shown to be efficient in photovoltaic devices. The current fabrication process has not been perfected, leaving defects such as site vacancies, which can trap charge and have a detrimental effect on photogenerated charge carriers. Here focus is placed on the effect a Pb site vacancy has on the charge-carrier dynamics following ...

This article discusses the issues of digitalization and using of information technologies, and in particular databases at all stages of the technological process of mining. In addition, the paper proposes options for protection against some of the possible attacks and information protection using countermeasures and control methods that exist at the present time. Database ...

A mathematical model of an electric drive of a centrifugal borehole pump is proposed for evaluating its energy consumption in operating conditions. The model is based on the use of minimum set of technical parameters of the pump, presented in the public data of the manufacturer. The correctness of the calculated formulas is confirmed by experimental data provided in the ...

The article evaluates current trends in the development of science and innovation in Kazakhstan. Analysis of scientific and innovation activities in Kazakhstan show that among the main sources of financing science there are almost no business representatives. An assessment of the current state of the national innovation system demonstrates that with the existing system ...

The issues of digitalization of the mining industry, including open-pit mining, are considered. The issues of the use of semantic systems as an element of information flows, allowing to determine and select the right decisions in the process of mining management, in particular, in the mining of minerals by open mining, are covered. The article formulates requirements ...

The article shows that the implementation of oil and gas companies will be implemented in many sectors of the global economy, including the main development sector-manufacturing industry. In Kazakhstan, “positive” experience has been accumulated in connection with the implementation of the oil and gas sector, because it is one of the main aspect of the global industries ...

In modern conditions the building can not only consume energy from the outside, but also produce its own. A new role has acquired such energy sources as the sun and wind. Energy saving in architecture follows from the requirements of regulatory documents and includes: the use of alternative energy sources, the installation of energy-saving equipment. Using examples of ...

The issues of digitalization of the mining industry, including open-pit mining, are considered. The issues of the use of semantic systems as an element of information flows, allowing to determine and select the right decisions in the process of mining management, in particular, in the mining of minerals by open mining, are covered. The article formulates requirements ...

The article presents measure to optimize the operating modes of power transformers in order to minimize losses of electrical energy. The influence of actual voltage and service life of power transformers on electric power losses is shown. It was proposed to determine the economic capacity of power transformers taking into account the indicated factors, as well as taking ...