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Topic Review
Industry 4.0 in Africa
The fourth industrial revolution presents an upspring opportunity for the African continent to adopt technologies such as artificial intelligence, big data, internet-enabled industrial platforms, 3D printing, robotics, nanotechnology, and blockchains. This is more so because the past three industrial revolutions saw the African continent being left out of its opportunities despite its affluent population and natural resources. Africa stands to benefit from industrial development, digitalization, and greater integration, which would result in more excellent opportunities for the growing youthful populations.
  • 997
  • 18 Jan 2023
Topic Review
Digital Twins for Home Remote Motor Rehabilitation
The COVID-19 pandemic created the need for telerehabilitation development, while Industry 4.0 brought the key technology. As motor therapy often requires the physical support of a patient’s motion, combining robot-aided workouts with remote control is a promising solution. This may be realised with the use of the device’s digital twin so as to give it an immersive operation. Such technology may be used for manual remote kinesiotherapy, combined with the safety systems predicting potentially harmful situations. The concept is universally applicable to rehabilitation robots.
  • 536
  • 18 Jan 2023
Topic Review
Power Hardware-in-the-Loop (PHIL)
Power hardware-in-the-loop (PHIL) stands out as a strong testing solution, enabling a real-time simulated power system to be interfaced to hardware devices such as inverters to determine interactions between multiple inverters at multiple points of common coupling on the grid and microgrids. 
  • 636
  • 18 Jan 2023
Topic Review
Large-Strain-Extrusion Machining
Bulk nanostructured metals and alloys are finding increasing structural applications due to their superior mechanical properties. The methods that rely on the severe plastic deformation technique for effecting microstructural refinement through imposing large strains are utilized mostly to produce nanostructured materials. The machining process has been demonstrated as a simple process for severe plastic deformation by imposing large strains through a single pass of the cutting tool where strains in a range of 1–15 can be imposed for a variety of materials by varying the cutting conditions and tool geometry. However, the geometry of the resulting chip subjected to severe plastic deformation during the machining process is not under control and, hence, a variant of the machining process, called the large-strain-extrusion machining process, has been proposed and utilized extensively for producing bulk nanostructured materials. Large-strain-extrusion machining possesses simultaneous control over microstructure refinement, through managing the strain during large-strain machining, and the shape and dimension of the resulting chip by the extrusion process.
  • 680
  • 17 Jan 2023
Topic Review
Characteristics and Hazards of Lead–Zinc Tailings
Lead–zinc tailings are the typical solid wastes in mines with high yield and low utilization rates in some countries. They are mainly stockpiled in tailings reservoirs, occupying massive land resources and threatening the health of the environment. 
  • 1.3K
  • 17 Jan 2023
Topic Review
Joint Configuration and Geometry
The use of carbon fibre-reinforced polymer (CFRP) materials is increasing in many different industries, such as those operating in the aviation, marine, and automotive sectors. In these applications, composite parts are often joined with other composite or metallic parts, where adhesive bonding plays a key role. 
  • 1.1K
  • 17 Jan 2023
Topic Review
Role of Hydrochar for Multipurpose Applications
Hydrothermal carbonization converts high-moisture waste biomass into a valuable hydrochar unlocking multiple applications 
  • 715
  • 17 Jan 2023
Topic Review
Basalt Fibre Reinforced Composites
Basalt mineral fibre, made directly from basalt rock, has good mechanical behavior, superior thermal stability, better chemical durability, good moisture resistance and can easily be recycled when compared to E-glass fibres (borosilicate glass is called ‘E-glass’ or ‘electric al-grade glass’ because of its high electrical resistance) which are traditionally used in structural composites for industrial applications. Industrial adoption of basalt fibre reinforced composites (FRC) is still very low mainly due to inadequate data and lower production volumes leading to higher cost. These reasons constrain the composites industry from seriously considering basalt as a potential alternative to conventional (e.g., E-glass) fibre reinforced composites for different applications.
  • 918
  • 17 Jan 2023
Topic Review
Combined Electrocoagulation and Adsorption Processes
The electrocoagulation (EC) process is a possible alternative to conventional wastewater treatment methods. Characteristics of the process, such as its flexibility, easy operation, no need for additional chemicals, and its ability to deal with different contaminants, have been increasing the interest in its implementation. The EC process found application in the treatment of different contaminated waters, and several studies have shown the potential of this technology. Adsorption (AD) is another attractive way of treating wastewaters due to the potential of using low-cost and environmentally friendly adsorbents. Due to their high surface area and well-developed pore structure, activated carbons are the most used adsorbents in wastewater treatment systems. The high price of activated carbon limits its application. The combination of the EC and AD processes can be used to amplify the advantages that each process presents in treating wastewaters. As a first step, the EC process reduces the pollutant loading and the suspended solids concentration, which can benefit the AD process by delaying the adsorbent saturation and preventing clogging. Additionally, each adsorption/regeneration cycle could result in the adsorbent losing some of its capacity; as a result, delaying adsorbent saturation helps to increase its useful life. 
  • 575
  • 17 Jan 2023
Topic Review
Carbon Nanotube Films as Sensor Material
The photo-thermoelectric (PTE) effect in electronic materials effectively combines photo-absorption-induced local heating and associated thermoelectric conversion for uncooled and broadband photo-detection. Formation of heterogeneous material junctions across the carbon nanotube (CNT)-film-based PTE sensors, namely photo-detection interfaces, triggers the Seebeck effect with photo-absorption-induced local heating. Typical photo-detection interfaces include a channel–electrode boundary and a junction between P-type CNTs and N-type CNTs (PN junctions). While the original CNT film channel exhibits positive Seebeck coefficient values, the material selections of the counterpart freely govern the intensity and polarity of the PTE response signals. Based on these operating mechanisms, CNT film PTE sensors demonstrate a variety of physical and chemical non-destructive inspections. 
  • 386
  • 17 Jan 2023
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