Cultivation of the common ragworm—Hediste diversicolor—has attracted a great deal interest in recent years. Growth optimization is key aspect for its intensive production. We have assessed effect body weight (Bw) and temperature (T) on growth-related parameters ragworm using correlation multiple regression analyses. used ragworms 13 different classes 15-day growing assays at 12 values. These po...

The green weight of southern pine tree-length roundwood delivered to the pulp mill is generally known. However, for optimum mill efficiency it is desirable to know dry weight. The moisture content of tree-length pine logs is quite variable. The moisture content of pine tree-length logs increases significantly with increasing stem height. Moisture content also varies with tree age and geographic...

Soil contamination by heavy metals is increasing. The biosorption process for removal of the heavy metal Cd(2+) from contaminated soil is chosen for this study due to its economy, commercial applications, and because it acts without destroying soil structure. The study is divided into four parts (1) soil leaching: the relationships between the soil leaching effect and agitation rates, solvent c...

The recent expansion of power-distribution networks has motivated many researchers to study how minimize the costs such projects. Although transmission towers present one main items in network that greatly affect project budget, there are no clear criteria or recommendations select optimum bracing system minimizes tower weight. This research presents configurations for latticed power-transmissi...

L-phenylalanine was produced by genetically modified bacterium, Escherichia coli BL21(DE3), using glycerol as an alternative carbon source. Response surface methodology (RSM) involving central composite design (CCD) was adopted to evaluate the amount of L-phenylalanine produced. In this work, the optimum concentrations were determined of the major nutrients in the fermentation medium, which inc...