In this paper, the bi-directional evolutionary structural optimization (BESO) method is used to find optimal layouts of 3D prestressed concrete beams. Considering the element sensitivity number as the design variable, the mathematical formulation of topology optimization is developed based on the ABAQUS finite element software package. The surface-to-surface contact with a small sliding between...

The consumption of mushrooms has considerably increased in recent years because their beneficial nutritional properties due to essential amino acids, proteins, and dietary fiber content. Recent research shown that they are also rich polysaccharides phenolic compounds. These compounds exhibit decisive free radical ROS scavenging power with potential application the treatment neurodegenerative di...

low grade grape juice concentrate was used as carbon source for xanthan production. significant factors affecting xanthan concentration, productivity and viscosity were investigated using plackett-burman design. based on the obtained results, carbon and nitrogen concentrations, inoculum size and agitation rate, were assumed as significant factors. broth culture viscosity and xanthan concentrati...