In this study, we demonstrate that introduction of rare-earth elements, R = La or Pr, into the Bi-O charge reservoir layer of BiCuSeO leads to an increase of both the charge carrier concentration and the effective mass. Although the charge carrier mobility slightly decreases upon Bi3+ to R3+ substitution, the electronic transport properties are significantly improved in a broad ...

The article discusses issues of forest preservation and environmental safety in Kazakhstan. The authors conduct a comparative analysis of forest cover across regions of Kazakhstan, revealing its low percentage in the Western regions and high in the eastern and southern regions. The article highlights both man-made and natural risks to the forest fund of Kazakhstan. The ...

The article considers the problems of the digitalization and use of financial resources. There is an investigation on the factors of impact on the efficiency of developing, the sources and directions of entrepreneurs’ financial resources allocation has been carried out in the article. For effective financial activity of the enterprise ways to improve the development and ...

Treatment of poultry slaughterhouse wastewater before disposal or reuse is an essential part of human health and environmental protection in general. This study aimed to investigate the influence of the pre-treatment system based on electrolysis technology within an integrated lab-scale treatment plant in the removal of contaminants from poultry slaughterhouse wastewater. Several ...

Microcrystalline CeO2, ThO2, and UO2 were irradiated with 198 MeV 132Xe ions to the same fluence at temperatures ranging from 25 C to 700 C then characterized by synchrotron X-ray diffraction and X-ray absorption spectroscopy. All samples retain crystallinity and their nominal fluorite-type phase at a flu￾ence of 1.5 1013 ions/cm2 . Both CeO2 and ThO2 display defect-induced ...

The role of information technology is especially great in strategic sectors of the economy, one of which is energy. After all, the more complex the product, the more acutely it needs more automation of the processes taking place in it. The main informational tasks of power generation are the automation of technological process systems and control over the installed ...

It is shown that the predicted energy crisis in Kazakhstan makes the issue of small-scale energy and complementary civil society institutions more than relevant. This crisis, caused by the de￾terioration of heating networks built during the former USSR, can be more than large-scale, as evidenced by the events in the city of Ekibastuz, where a significant proportion of the ...

Fully inorganic lead halide perovskite nanocrystals (NCs) are of interest for optoelectronic and light-emitting devices because of their photoluminescence (PL) emission properties, which can be tuned/optimized by (I) surface passivation and (II) doping. (I) Surface passivation of the NC affects PL capabilities, as an underpassivated surface can introduce trap states, which reduces ...

The issues of managing the sustainable development of an enterprise in the context of digitalization have been studied. The digitalization process is interpreted as a tool for transforming the enterprise at the levels of control, production and management, which ensures the sustainable development of the enterprise. Describes methods and tools for research and implementation ...

Sufficient national fossil resources and an independent water supply system are indispensable elements of the security structure of any state. Energy independence, as a factor in determining self -sufficiency, is now a basic requirement for countries or regions wishing to develop independently and freely. The purpose of this research is to identify the specifics of the ...