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Advanced technological decisions are worked out on the up-to-date science level, minimize negative influence on an environment. and promote the effectiveness of technological process, which allows to implement all borehole underground coal gasification benefits.
Acknowledgements This work was supported by the Ministry of Education and Science of Ukraine, grants No. 0116U008041 and No.0115U002293.
International Journal of Coal Geology, 131, 304-318. https://doi.org/10.1016/j.coal.2014.06.025 [9]. 
Application of fine-grained binding materials in technology of hardening backfill construction.
Archives of Mining Sciences, 60(2). https://doi.org/10.1515/amsc-2015-0029 [24]. 

Materials and methods Study area The city of Tianjin(39ºN, 117ºE)is one of the four municipalities directly under the central government.
Acknowledgments This work was financially supported by the National Natural Science Foundation (41301096).
Journal of Cleaner Production Vol.17(2009), p 265-270 [8] Xiaoyan Zheng, Dazhou Chen, Xiande Liu, Qunfang Zhou, Yue Liu, Wen Yang, Guibin Jiang.
Procedia Environmental Sciences Vol.2(2010), p 945-952 [12] Tianjin Municipal Bureau of Statistics.
Beijing: Science Press. (1996) [14] National Research Council (NRC).

Finite element analysis (FEA) is employed to evaluate the actual performance of the synthesized CPM with Ti6Al4V material in order to verify the correctness of the synthesis method.
Section 4 presents the simulation results of the synthesized CPM with Ti6Al4V material.
This material has a Young’s modulus of 111 GPa, Poisson ratio of 0.34, density of 4.5 g/cm3, and yield limit of 950 MPa.
Xu, "A totally decoupled piezo-driven xyz flexure parallel micropositioning stage for micro/nanomanipulation," IEEE Transactions on Automation Science and Engineering, vol. 8, no. 2, p. 265–279, 2011
Nai, "Design and Optimization of a Three Degrees-of-Freedom Spatial Motion Compliant Parallel Mechanism With Fully Decoupled Motion Characteristics," Journal of Mechanisms and Robotics, p. 051010, 2019.

Materials and Method The research methodology uses a prototype model[25].
Sinaga, “Preventing Traffic Road Accident: Prototype of Monitoring Tires Failure Detection,” in Proceeding - 2019 5th International Conference on Science in Information Technology: Embracing Industry 4.0: Towards Innovation in Cyber Physical System, ICSITech 2019, 2019, pp. 3–8
Ouis, “DRIVER DROWSINESS DETECTION SYSTEM Laboratory signals and images ( LSI ) University of Sciences and Technology of Oran Mohamed Boudiaf ( USTO-MB ),” in International Workshop on Systems, Signal Processing and their Applications (WoSSPA), 2013, pp. 151–155
Series, “A prototype of IoT-based smart system to support motorcyclists safety,” in Journal of Physics: Conference Series239th ECS Meeting with IMCS18, 2021
Swamynathan, “Smart Helmet with Emergency Notification System – A Prototype,” in Advances in Computer Science Research, 3rd International Conference on Wireless Communication and Sensor Network (WCSN 2016), 2017, vol. 44, no.

During the service life, the mechanical parts made of these materials operate at high stress and temperature level, in a quite harsh environment.
Table I- EBW BoP seam: chemical composition of the material measured by EDS microanalysis in base metal, HAZ and MZ.
Table II- Laser joints: chemical composition of the material measured by EDS microanalysis in base metal, HAZ and MZ.
Marchanty, Nickel-Based Superalloy Welding Practices for Industrial Gas Turbine Applications, Science and Technology of Welding and Joining 9 (2013)13-21
Tillack, Welding Journal 86 (2007) 28-32

Studies of material migration from suspended powder, dielectric, electrode and their impact on surface properties have been studied for different die steel materials [5, 10].
The volume of material above melting temperature represents the material removed leading to formation of a crater.
Manufacturing Science, (Affiliated East-West Press Private Limited, New Delhi, 1985)
Effect of materials on the mechanism of electric discharge machining (EDM).
IE (I) Journal-PR, 1996, 77, 13–19

The original microfabrication techniques were derived from the semiconductor industry and the major substrate materials in the late 90’s were silicon and glass.
To obtain the goal of developing a microfluidic device that is low-cost, disposable, less hazardous fabrication processes, and mass produced, new substrate materials with associated fabrication techniques were explored such as polycarbonate, poly(methylmethacrylate) (PMMA), polydimethyl-siloxane (PDMS), and even paper [2].
Since micromilling is following the design pattern to remove materials from the substrate, so it can be used on different substrate materials from polymers to metals and create more possibilities in microstructure patterns and applications.
Brass is selected as the substrate material for micromilling since it is easy to machine and its strength is enough for hot embossing [20-21].
Limbach, “Enhanced machining of micron-scale features in microchip molding masters by CNC milling”, International Journal of Machine Tools & Manufacture 45 (2005) 1542–1550

Separation of sulphuric acid from an acid suspension of cellulose nanocrystals by manual shaking Soon Yee Liew1,a, Wim Thielemans1,2,b and Buddhika Hewakandamby1,c 1 Division of Manufacturing and Process Technologies, Faculty of Engineering, University of Nottingham Nottingham NG7 2RD 2 Renewable Materials and Nanotechnology Research Group Science and Technology KU Leuven Campus Kortrijk Etienne Sabbelaan 53 8500 Kortrijk Belgium asoon.liew@nottingham.ac.uk, bwim.thielemans@kuleuven.be, cBuddhika.hewakandamby@nottingham.ac.uk Keywords: Cellulose nanocrystals, sulphuric acid, nanoparticle separation, flocculation, acid recovery.
Materials and methods The cellulose source was cotton wool purchased from Fisher Scientific.
Moreover, the sulphuric acid concentration of 30 wt% may be an issue for the membrane material.
Bohn, Cellulose: fascinating biopolymer and sustainable raw material, Angew.
Vermant, Direct visualization of yielding in model two-dimensional colloidal gels subjected to shear flow, Journal of Rheology, 53, (2009), 1437-1460

The deleterious impact of metallic degeneration is common on engineering materials utilized for structural applications in environments containing chlorides, sulphates and thiosulphates such as buildings and bridges, petrochemical pipelines and refineries, vehicular radiators, boilers, desalination and marine applications [3].
The most common engineering materials are refined ferrous alloys which require enormous quantity of energy to isolate them from their ores.
Experimental Methods Materials Preparation Plain carbon steel (PCS) sheet was obtained from a dealer in Lagos, Nigeria.
Ahmad, Types of corrosion: Materials and Environments, in Principles of Corrosion Engineering and Corrosion Control, 1st Ed., Butterworth-Heinemann, 2006, pp. 120-270
Abza, Short review of factors affecting chemical bath deposition method for metal chalcogenide thin films, International Journal of Thin Films Science and Technology, 8(2) (2019) 43-52. http://dx.doi.org/10.18576/ijtfst/080203

Monte Carlo simulation has been used for material selection in different industrial application [12].
Pedeferri, Cathodic protection and cathodic prevention, Construction and building materials, 10 (1996), 391-402
Bertolini, Durability design of reinforced concrete structures, Proc. of the Institution of Civil Engineers, Construction Materials 164 (2011), Issue CM6, 273–282 [9] R.M.
Bertolini, The challenge of the performance-based approach for the design of reinforced concrete structures in chloride bearing environment, Construction and Building Materials 79 (2015) 245–254 [12] T.
Pedeferri, Corrosion inhibitors in reinforced concrete structures Part 1: Preventative technique, Corrosion Engineering Science and Technology, 39 (2004), 219-228