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This volume is dedicated to the 120 th anniversary of the National Mining University (Dnipro, Ukraine) and designed for researchers and practitioners, students, postgraduates and university lecturers, as well as for anyone, who interested in energy conservation issues. In the case of coal fuels, as one of the main energy source, effective technologies for maintaining mining operations under difficult conditions are substantiated. The energy efficiency of coal gasification with the use of mining waste has been estimated, technical and technological means, as well as conditions for the introduction of the gas generator are proposed. In the aspect of the normalization of working conditions of miners, protective effectiveness of respiratory devices is established, taking into account the requirements of the European standard EN 529: 2006. The possibility of significant energy savings is demonstrated by the introduction of electric drives with group power from a conventional DC device with storage capacity.

Coal Production, Coal Wastes, Gasification, Sources of Thermal Energy, Geothermal Energy, Energy Efficiency, Electric Drives

The collaboration between IMASH (Khrushchov) and Institute of Metallurgy (Shorshorov) led to the development of more advanced techniques for depth-sensing indentation (see, e.g. [19]).
References [1] Y.Y.LimM.M.Chaudhri and Y.Y.LimM: Key Engineering Materials Vol. 345-346 (2007), p. 1107 [2] S.R.
Sneddon, North Carolina State College, Departments of Mathematics and Engineering Research, NSF Grant No.
Brown: Materials Science Forum Vol. 550 (2007), p.105 [80] T.F.
Barquins, in: Microindentation Techniques ln Material Science and Engineering, edited by P.J.

Borse1* 1International Advanced Research Centre for Powder Metallurgy and New Materials (ARC International), Balapur PO, Hyderabad, AP, 500 005, India 2Busan Center, Korea Basic Science Institute, Busan 609-735, South Korea E-mail: phborse@arci.res.in Keywords: Solar, Hydrogen energy, Photoanode, Photoelectrochemical, ferrites.
In order to identify or engineer such challenging material for photocatalysts, the knowledge of their electronic and optical structure is very much essential.
Forum, 734 (2013) 334-348

Besides the continuous research on HEAs, special interest developed in so-called medium entropy alloys (MEAs) [14], providing pathways for dual- or multi-phase microstructures and enabling more options for microstructure engineering [15].
The influence of stress concentrators on a components lifetime cannot be neglected and the characterization of stress concentrations, resulting from cracks, notches, sharp corners, joints or other geometrical irregularities is an important part of engineering safety protocol.
Moreover, [9] designed strategies for developing advanced fatigue-resistant HEAs, based on the aspects of hierarchical microstructure, reversible planar slip, deformation twinning (TWIP) and transformation induced plasticity (TRIP), of which only the aspect of hierarchical microstructure was observed in the present study.
Forum 879 (2017), 2537–2542. doi: 10.4028/www.scientific.net/msf.879.2537
Goodman, Mechanics Applied to Engineering, Longman, Green & Company, London, 1899

Forum, Moroccan Energy Outlook: Achievements and opportunities, (2018)
Mahmoudi, Energy management in the smart grid: State-of-the-art and future trends, International Journal of Engineering Business Management, (2021) 13, 18479790211032920
Saad, Optimal DG Deployment Based on Technical and Economic Considerations with Daily Load Variation, International Journal of Engineering Research in Africa, (2019) 45, 115-131
Darcherif, New Approach to Integrate Planning and Scheduling of Production System: Heuristic Resolution, International Journal of Engineering Research in Africa, (218) 39, 156-169
El Markhi, Renewable Energy Potential and Available Capacity for Wind and Solar Power in Morocco Towards 2030, Journal of Engineering Science and Technology Review, (2018) 11, 189-198

(ix) Technical and economical considerations (Raw material availability, adaptability of process parameters to easily available engineering materials).
It is well known that the optimal engineering performance of a glass is dominated by its structure.
S.V.Raman from Idaho National Engineering and Environmental Laboratory, USA [109] has compared the Raman spectra of alumino-borosilicate glasses of varying composition and concluded that the incorporation of ZrO2 leads to decrease in the leaching of alkali ions.
Ross (Eds.), Advances in Ceramics, American Ceramic Society Vol. 8, Chicago, USA 1983
Forum, 175/178 (1995) 269-278

Babalola3,d 1Department of Civil Engineering, University of KwaZulu-Natal, Durban, South Africa 2Department of Civil Engineering, Covenant University, Ota, Nigeria 3Faculty of Civil Engineering, Ton Duc Thang University, Ho Chi Minh City, Viet Nam apaul.awoyera@covenantuniversity.edu.ng, bOlalusiO@ukzn.ac.za, cdavebabz64@gmail.com, dbabalolaolusolaemmanuel.st@tdtu.edu.vn Keywords: Waste Management; Recycling and Reuse; Paper Wastes; Ceramics; Building Mortar Abstract.
[16] Pillay D.L., Olalusi O.B. and Mostafa M.M.H., A Review of the Engineering Properties of Concrete with Paper Mill Waste Ash — Towards Sustainable Rigid Pavement Construction, Silicon. (2020). doi:10.1007/s12633-020-00664-2
Annals of Faculty Engineering Hunedoara, Int.
Journal of Civil Engineering and Management, 15(2) (2009) 149-157
Procedia Engineering 108 (2015) 681-687 [86] Asha P.; Dipti S.; Rupali P. and Prerana P., Effect of paper waste on concrete properties: Sustainability approach.

A recent advances with respect to combination of tracer and chemical diffusion experiments are highlighted.
Chang, Nanostructured high-entropy alloys with multiple principal elements: Novel alloy design concepts and outcomes, Advanced Engineering Materials 6 (2004) 299-303
Grabowski, Computationallydriven engineering of sublattice ordering in a hexagonal AlHfScTiZr high entropy alloy, Scientific Reports 7 (2017) 2209.
Guillot, Elastic and plastic properties of as-cast equimolar TiHfZrTaNb highentropy alloy, Mater Science Engineer A 654 (2016) 30-38
Forum 237-240 (2005) 50-61

JAYA Algorithm-Based Energy Management for a Grid-Connected Micro-Grid with PV-Wind-Microturbine-Storage Energy System Peter Anuoluwapo, Gbadega1,a*, and Yanxia, Sun2,b 1,a and 2,bDepartment of Electrical and Electronic Engineering Science, Faculty of Engineering and Built Environment, University of Johannesburg, Johannesburg, 2006, South Africa.
It is important to note that the main purposes of modeling in control engineering are control design and system behavior analysis through simulation.
Waghmare, "A new optimization algorithm for solving complex constrained design optimization problems," Engineering Optimization, vol. 49, no. 1, pp. 60-83, 2017
Saha, "Model-Based Receding Horizon Control of Wind Turbine System for Optimal Power Generation," in Advanced Engineering Forum, 2021, vol. 40: Trans Tech Publ, pp. 83-98
Hakimi, "Optimal sizing of a stand-alone hybrid power system via particle swarm optimization (PSO)," in 2007 International Power Engineering Conference (IPEC 2007), 2007: IEEE, pp. 960-965

A rich variety of scientific, materials engineering and applied works devoted to the complex study of Ni-Mn-Ga Heusler alloys were stimulated by these hopes.
These properties of the novel materials are needed to solve large-scale applied problems such as a creation of magnetocaloric devices and new technology for actuators, which can be applied in an instrument engineering industry, micro and nanomechanics etc.
The magnetocaloric measurements were performed with the use of the Magnetocaloric Measuring Setup produced by Advanced Magnetic Technologies and Consulting Ltd (AMT&C) [64].
Forum 512, (2006) 145-152
Forum 583 (2008) 21-41