This paper investigates the potential use of coked sands, a byproduct of the thermal processing (pyrolysis) of oil sands, in asphalt concrete mixtures. After pyrolysis extracts the oil from the oil sand, the remaining mineral part becomes coked and changes color to black as solid waste, resulting in a coating of biochar. The coked sand’s X-ray phase analysis (XRD) shows peaks at 4.2564, 3.6749, 3.3768, 3.2380, 3.1903, 2.4581, 2.2800, and 2.2365. Quartz, aluminosilicates, metal oxides, and possibly even carbonates make up the sand’s mineral makeup, as indicated by these peaks. One way to use them is in road construction. In this study, we substituted sand screenings with coked sand in amounts of 5%, 7%, and 10% to examine its impact on the composition of asphalt concrete. This study used 5% paving bitumen (BND 70/100) as a binder for asphalt mineral materials of varying sizes. It concludes that using coked sand to produce asphalt concrete can save 5–10% of sand screenings. The test results showed that adding 5% and 7% of coked sand increases the compressive strength at 50 °C by 8% and 31%, respectively. Adding 10% of coked sand does not increase the strength and actually makes it weaker. The results of the asphalt concrete samples meet type B grade 1 standards of ST RK 1225-2019.

In this paper, the main characteristics of the natural bitumen of the Munaily-Mola oil sands were studied with comparison crude oil of Karazhanbas oil field. During the experiment, the density, heating value, ash content and elemental composition of natural bitumen were determined, and these parameters were compared with the properties of Karazhanbas crude oil. As well as oil, resin and asphaltene fractions of both hydrocarbons were separated and each of them were analyzed at a Fourier transform IR-spectroscopy Spectrum-65 with 450-4000 cm−1 range. According to these indicators, it is concluded that natural bitumen is a heavy hydrocarbon raw material with highly resin-asphaltene compounds. Like Karazhanbas oil, natural bitumen can be used as a raw material for various petrochemical products. By finding ways of effective processing of natural bitumen, it can be used in useful areas of the national economy.

The article is devoted to the study of selenium (VI) reduction processes in sulfuric acid solutions when titanium electrodes are polarized by alternating current of industrial frequency (50 Hz). It was found that selenate ion reduction occurs on the surface of titanium electrodes in the cathode half-cycle of alternating current (practically at the cathode) by reaction: ${\mathrm{SeO}}_4^{2-}$+ 6e + 8H⁺ → Se + 4H₂O. In addition, the recovery is carried out by titanium (III) ions: 6Ti³+ ${\mathrm{SeO}}_4^{2-}$+ 8H⁺ → Se + 6Ti⁴⁺ + 4H₂O. It has been established that titanium (III) ions are products of dissolution of titanium during polarization by alternating current, so they can be formed by reaction: 2Ti + 6H⁺ → 2Ti³⁺ + 3H₂. Reduction in selenate ions during polarization by alternating current can also occur due to the cementation reaction with titanium: 3Ti + 2${\mathrm{SeO}}_4^{2-}$ + 16H⁺ → 2Se + 8H₂O + 3Ti⁴⁺. It was shown for the first time that the selenate ion is reduced to form a dispersed selenium powder with a high current efficiency. Depending on the conditions, both amorphous and crystalline selenium modifications are produced.

The present research conducts an intricate economic analysis on targeted nutritional interventions for a specific demographic: 60 athlete-schoolchildren between the ages of 11 and 13 in Central Asia. These children are actively engaged in the ethno-intellectual sport of Togyz Kumalak which from an ethnohistorical perspective is a part of the socio-cultural heritage of the nomadic societies of Central Asia. Spanning a timeframe of 12 months, this multi-faceted study was articulated in a three-stage design framework. The initial stage involved a baseline assessment of the children’s nutritional statuses, utilizing anthropometric measurements and dietary recall surveys as empirical tools. Medical experts and biologists collaborated to identify the economic implications of nutrient imbalances that could lead to metabolic disorders and subsequent healthcare costs. The second stage encompassed the formulation and execution of nutritional interventions that were economically vetted for sustainability and impact. These interventions were derived from the baseline data and involved dietary supplementation, counseling, and a well-balanced nutritional regimen designed in consultation with coaches, trainers, and parents. During this stage, economic considerations were central to the discourse as experts across disciplines expounded on the optimal ratio of vital macro- and micronutrients, adequate caloric content, and even distribution of nutrients throughout the day. Such a comprehensive approach to diet structuring amplifies the economic viability by elucidating how a balanced nutritional intake can enhance athletic and intellectual performance, impact competition outcomes positively, and improve post-training recovery – thereby potentially mitigating of long-term healthcare expenditures. The study culminated in a rigorous post-intervention assessment that employed both cost-effectiveness analysis (CEA) and cost-benefit analysis (CBA) methodologies. The results revealed not only a statistically significant improvement in the nutritional statuses of the children but also confirmed the cost-effectiveness and scalability of the interventions implemented. The economic aspects were augmented by metrics that interlinked the immediate benefits of the interventions with broader economic considerations, such as the potential reduction in healthcare-related costs over time. Research contributes profoundly to public health dialogues, offering insights into the optimization of resources to heighten the general well-being and performance, particularly in the specialized arena of ethno-intellectual sports like Togyz Kumalak. It successfully straddles the crossroads of health economics, cultural sports, and public health, emphasizing the potential for integrative approaches in the amelioration and proliferation of community-centered health programs. This multifaceted economic analysis thus serves as a robust model for scalable and economically viable public health strategies that satisfy both individual health and community development needs.