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Vol 1,

Issue 1 -

June,

2025

Enhanced wind turbine blade design for improved power output and reduced noise

by Gnepie-Takam Nicolas¹, Choupo Yuego¹, Tientcheu-Nsiewe Max-well¹, Matuam Tamdem Balbine¹, and Kuitche Alexis¹
Current wind turbine optimization studies primarily employ either the Blade Element Method (BEM) or Computational Fluid Dynamics (CFD) to evaluate rotor aerodynamic performance. While BEM remains widely used due to its simplicity and low computational cost, it depends heavily on empirical correction factors that can limit its accuracy in complex flow conditions. Conversely, although CFD provides highly accurate results by solving the Navier-Stokes equations, it is computationally […] Read more at https://mjcellpress.com/article/mjes03/.

Clarification of a laterite suspension using a mixed two-layer filter based on limestone and pozzolan

by Nguemtue Nguemtue Thiery¹,², Nsoe Mengue Jean Jacques Nestor ¹,²*, Amba Esegni Victoria², Nouria Zihane², Kofa Guillaume Patrice², Ndi Koungou Sylvere², Kayem Guifo Joseph².
Coagulation and flocculation are essential in water clarification but rely on costly chemical reagents that can leave harmful residues and generate polluting sludge. This study aims to evaluate and compare the effectiveness of bilayer (limestone/pozzolan) and mixed (homogeneous blend) filters for clarifying lateritic suspensions. A suspension with 30 ± 1 NTU turbidity and pH 6.00 ± 0.05 was prepared. […] Read more at https://mjcellpress.com/article/mjes02/.

Optimization of alkaline pretreatment of Yagoua rice straw for bioethanol production

by Oscar Ghislain Mikock-King¹*, Cyrille Rodrigue Enone Ellah¹, Ahmed El-kebir Iya¹, Justin Tégawendé Zaida², Donald Raoul Tchuifon Tchuifon¹ , Zacharie Merlin Ayissi¹, Ruben Mouangue¹.
The aim of this work is to optimize the alkaline hydrolysis of rice straw lignocellulose using kanwa, with the goal of producing bioethanol. The alkaline pretreatment was carried out using a saline rock from North Cameroon (kanwa) under the following experimental conditions: temperature between 170 and 200°C, and duration between 20 and 60 minutes. Characterization revealed that the local material contained 91.75 ± 0.48% dry matter, 8.25 ± 0.48% water, 31.22 ± 2.04% cellulose, 9.92 ± 2.46% lignin, and 17.72 ± 0.51% hemicellulose. […] Read more at https://mjcellpress.com/article/mjes01/.
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