Pumped-storage hydropower is a key clean energy source for grid stability and emergency backup. Tunnel Boring Machines (TBMs) enable safe, automated, and efficient hard-rock excavation with minimal environmental disturbance. To mitigate the critical risk of tunnel boring machine...
Open access
Research Article10.9734/jerr/2026/v28i61926
Construction projects continue to face coordination inefficiencies, schedule pressure, and limited visibility of actual site conditions despite increasing investment in digital tools. This scoping review examines the use of mixed reality systems for inspection, real-time monitori...
Open access
Research Article10.9734/jerr/2026/v28i61923
Background: Free-piston engines have attracted significant research interest as a promising alternative to conventional internal combustion engines due to their simplified mechanical structure and potential for improved efficiency and lower emissions. Early studies primarily focu...
Open access
Research Article10.9734/jerr/2026/v28i61924
The increasing demand for electricity, coupled with rising economic and environmental concerns, has made renewable energy, particularly solar energy, a major area of interest. This research work evaluates the impact of distributed generation (DG) and presents a methodology for th...
Open access
Research Article10.9734/jerr/2026/v28i61921
Background: Conventional direct reduction synthesis approaches encounter several significant challenges during the fabrication process. The acidic nature of chloroauric acid can induce etching of the Fe₃O₄ core, thereby compromising the structural integrity of the nanoparticles....
Open access
Research Article10.9734/jerr/2026/v28i61922
AutoNav, a Bluetooth-enabled vehicle that can be operated with a Bluetooth-enabled device like a smartphone or tablet, is one type of robotic vehicle. A Bluetooth module is integrated into the vehicle to establish communication with the user's device, enabling wireless control of...
Open access
Research Article10.9734/jerr/2026/v28i61919
Lapping, the commonest technique used to splice reinforcement bars, needs no special instrument or skill to execute. However, their usage may result in excessive section reinforcement, which may result in a non-ductile response of the spliced region. The structural performance of...
Open access
Research Article10.9734/jerr/2026/v28i61916
The construction of ultra-large diameter coal silos presents formidable engineering challenges, particularly during the capping phase, when temporary support structures must span vast distances within constrained, enclosed cylindrical environments. The rotating Cuplok scaffolding...
Open access
Research Article10.9734/jerr/2026/v28i61917
Trough-making machine is a key special equipment for aqueduct construction, which effectively solves the construction difficulties of long-span, large-volume and high-altitude operation. At present, most trough-making machines are non-standardized equipment designed by empirical...
Open access
Research Article10.9734/jerr/2026/v28i61918
Background: The rapid transition toward electric mobility has increased the demand for lithium-ion electric vehicle (EV) batteries; however, the high cost of new battery packs remains a major barrier to EV adoption in developing countries such as Ghana. This study comparatively a...
Open access
Research Article10.9734/jerr/2026/v28i61915