sedimentation is one of the most important problems in harbors that results in considerable economic costs. harbor planforms affects the flow pattern in the harbor basin and consequently, plays an important role in sediment transport and sedimentation. in the present study, a two dimensional depth-averaged hydrodynamic and sediment transport model has been developed to investigate the effect of...

Total sedimentation and the fraction due to copepod fecal pellets were measured during the growth season (March-October 1989) in the southern Kattegat, Denmark. In this period the sedimentation of detritus made up 52 g C rn-‘, equal to 82% of the sedimenting matter from the euphotic zone, but fecal pellets (11 g C mpZ) constituted only a minor fraction. The remaining detrital matter was produce...

In this study, the physical (color, grain size, equivalent diameter, sphericity, kernel surface area, volume, thousand weight, hectoliter dry weight and wet weight), physicochemical (technological) (dry water absorption capacity, index, swelling gluten Zeleny sedimentation delayed sedimentation) chemical (moisture, protein contents) properties of most grown bread wheat varieties (Triticum aesti...

In the present research, the aqueous suspensions of nano-sized YSZ particles were prepared using a common and available dispersant (Dolapix CE64) at different pH values and their stability were evaluated through the sedimentation height, viscosity measurement, and microstructural observation. Different amounts of dispersant were tested and the optimum percentage was examined by measuring the vi...

The plastic recycling industry generates a high volume of wastewaters. In this study, an unprecedented use Moringa oleifera and tannin (Acacia mearnsii bark) associated with magnetite was proposed for the treatment these response surface method (RSM) central composite rotational design (CCRD) methodology applied to optimize influence operational variables (pH, temperature, electrical conductivi...

the automobile industry’s wastewater not only contains high levels of suspended and total solids such as oil, grease, dyestuff, chromium, phosphate in washing products, and coloring, at various stages of chassis manufacturing but also, a significant amount of dissolved organics,resulting in high bod or cod loads. suspended solids can be removed from the wastewater by chemical precipitation. h...