This study introduces innovative advancements in catalyst and membrane technology to improve fuel cell performance and reduce costs. Platinum-group metal (PGM)-free iron–nitrogen–carbon (Fe–N–C) catalysts achieved a 0.85 W/cm2 power density, a 19.88% improvement over traditional PGM-free catalysts, with stable operation exceeding 1000 hours. Nanostructured carbon supports ...

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 ...

Microalgae in planktonic communities are the main producers of biomass in lake ecosystems; however, their stability is influenced by many environmental factors. This study aims to assess the ecological state of Lake Maybalyk, located in Astana (Kazakhstan), based on the study of the taxonomic diversity and structure of phytoplankton, zooplankton, and the physico-chemical properties ...

This article presents the results of durability assessment for various types of cellular concrete. The research was conducted on aerated concrete samples utilizing a two-stage foam introduction method, classical foam concrete method, and autoclaved aerated concrete. Adverse factors affecting the material's durability were attributed to the influence of natural-climatic ...

The object of this study is a procedure for measuring physical quantities under laboratory conditions at educational institutions. The issue related to this case is the lack of any comprehensive method and technical solution suitable for the experimental study of physics in both offline and online learning formats. To solve this problem, an approach has been proposed, ...

The study is conducted to optimize technologies for automated control of heat supply systems based on renewable energy sources that can increase energy efficiency and reduce environmental impact. The study uses machine learning methods for predicting heat energy consumption, intelligent monitoring and diagnostics systems, and control automation algorithms to optimize the ...

Calculations of steady-state modes of a complex electric power system are significantly simplified if we use the coefficients of distribution of the setting currents. The use of the theory of directed graphs for the formation of the matrix of the coefficients of distribution of the setting currents is directly related to the determination of the values of all possible and ...

The purpose of the work was to conduct biotesting for the presence of antibiotics in several lakes of the Akmola region, located in the zone of possible ingress of antimicrobial drugs into them. The adopted research method was the modified disk diffusion method, employed to determine the microorganisms’ sensitivity to the used antibiotics. As a result of the study, sensitivity ...

As the geopolitical context changes, the development of a certain region is based on a reform of its regulatory approaches. The field of water relations is no exception, as their effective existence requires constant analysis and innovation, including legislation. Thus, in the context of acute geopolitical and natural changes, this issue is of particular relevance both in ...

The installation of piles at construction sites produces vibrations that may extend for hundreds of meters from the location of the pile. Depending on their proximity to this activity, these vibrations can induce damage to nearby structures. The results of a vibration monitoring study that was performed at a water treatment plant in the Republic of Kazakhstan are presented. ...