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Optimization the dynamical parameters of three phase induction motor using genetic algorithm

Mohammed M.H.

Poznan University of Technology Academic Journals. Electrical Engineering

2012

No. 72

123--128

This paper deals with the optimization of the induction motor design with respect to torque as a dynamical parameter. Most studies on the design of an induction motor using optimization techniques are concerned with the minimization of the motor cost and describe the optimization technique that was employed, giving the results of a single (or several) optimal design(s).Procedure includes the relationship between torque of motor and other effects as they occur in an optimal design. The optimization method that was used in this paper is Differential Evolution as genetic algorithm. Optimal results are in picture as curves or in tabula.

Toxicity of certain oil wastes from Iraq towards some cladocera species

Mohammed M.H., Markert B.

Chemia i Inżynieria Ekologiczna

2005

Vol. 12, nr 5-6

539-546

Toxicity of Al-Dura refinery (Baghdad, Iraq) wastes was measured on two freshwater invertebrate species, by using bioassay. The study included measures of toxicity for two species of Cladocera, being Daphnia magna and Simocephalus expinosus. Three locations in the waste treatment unit were chosen for tests in the refinery. They represent different stages of purification in the unit. Different scales were used to estimate waste toxicity on the organism. It included estimates of median lethal concentration (LC[50]) and of safe concentration (SC). Same analyses were used to determine reasons of different responses. With respect to comparison of species sensitivity, Daphnia magna was found to be mree sensitive than Simocephalus expinosus.

Toksyczność ścieków pochodzących z rafinerii Al-Dura refinery (Baghdad, Irak) była mierzona przy zastosowaniu metod bioanalitycznych. Badano toksyczność względem dwóch gatunków Daphnia magna i Simocephalus expinosus. Do badań wybrano trzy miejsca pomiarowe, reprezentujące różne stopnie oczyszczania wody. W celu oszacowania toksyczności względem badanych organizmów stosowano różną skalę - oszacowano medianę wartości LC[50] oraz "stężenia bezpiecznego" (SC). W wyniku badań wykazano, że organizmy z gatunku Daphnia magna charakteryzują się większą wrażliwością niż Simocephalus expinosus.