Umar Farooq

“I never imagined one comment could change everything—until the truth came out in front of everyone…”

The updated flood guidelines in Sweden have led to higher design discharges for many existing dams. While the primary function of a spillway chute is to convey floodwater, roughness appurtenances are proposed for installation along the chute. The aim is to dissipate an extra portion of the flow’s energy before release into the tailwater. One straight and three labyrinth roughness configurations are designed and manufactured. Their effectiveness is assessed through model tests. The roughness leads to an increase in water depth and induces an undulating streamwise water-surface profile. Due to their lateral interaction with the flow, the labyrinth shapes exhibit less distinct contours of surface unevenness than the straight one. With an increasing water depth, the free surface becomes gradually smeared out. For all the shapes, the roughness effect on the surface flow almost disappears if the water depth exceeds 6.5–7.0 times the roughness height. Compared to the smooth chute, the straight elements augment the energy loss by a factor of 1.9–3.8; the labyrinth configurations outperform the straight ones by 16–35% more energy dissipation. The differences among the triangular, trapezoidal, and rectangular shapes are, however, minor. Introducing chute roughness is a complementary measure. If the chute is sufficiently long, an adequate number of roughness rows could replace the function of a stilling basin.

The carbon dioxide reduction reaction (CO2RR) is an important solution for reducing carbon levels. Achieving high selectivity and low cost for the catalyst are the main challenges. In this study, computational approaches at the density functional theory (DFT) level are employed to investigate the catalytic activity

Groundwater depletion is among the most critical hydrological threats to sustainable agriculture and water security in semi-arid regions.

This study reports the green synthesis of copper oxide nanoparticles (CuO NPs) using Oxystelma esculentum extract as a reducing and stabilizing agent.

Iran War Tehran Can't Count on Hormuz

At the Lower Chitral Airport, the chief minister was received by local leaders and government officials. He added that he would attend a reception ceremony held in honour of Prince Rahim.

As the first light spreads across the village of Panzath in Indian-administered Jammu and Kashmir, Mohammad Younus Wagay finishes breakfast, changes