Meta-heuristics have already received considerable attention in various fields of engineering optimization problems. Each of them employes some key features best suited for a specific class of problems due to its type of search space and constraints. The present work develops a Pseudo-random Directional Search, PDS, for adaptive combination of such heuristic operators. It utilizes a short term...

Analysis of nonlinear autonomous systems has been a popular field of study in recent decades. As an interesting nonlinear behavior, chaotic dynamics has been intensively investigated since Lorenz discovered the first physical evidence of chaos in his famous equations. Although many chaotic systems have been ever reported in the literature, a systematic and qualitative approach for chaos generat...

in this study, the potential of biosorbent obtained from silk maze, was investigated for the batch biosorption of direct red 81 (dr 81) in aqueous solution. the effects of temperature, biosorbent amount, contact time, initial dye concentration and ultrasonic irradiation were also evaluated. furthermore, experimental equilibrium and kinetics data were fitted by langmuir and freundlich isotherms ...

cytomegalovirus (cmv) infection can cause colitis which is usually manifested with fever, weight loss, anorexia and abdominal pain.watery diarrhea can be the only manifestation. cmv colitis usually can not be diagnosed according to the clinical findings. moreover, endoscopic appearance can exactly mimic pseudo-membranous colitis. here by, we are presenting a patient with fever and watery diarrh...

objective(s):this study aims at exploring cytotoxic activity of different peptides derived from vsvg protein against mcf-7 and mda-mb-231 breast cancer cell lines and human embryonic kidney normal cell (hek 293).    materials and methods: the anticp web server was used to predict anticancer peptides. the cytotoxic activity of peptides with high score (p26, p7) and low score (p19) was examined b...