An electrical transducer for urea is described. The excellent stability of various types of urease enzyme electrodes developed in the author's laboratory is due to understanding the parameters which affect immobilized enzyme stability. Preliminary experiments have shown that a liquid layer of urease trapped in a double cellophane layer over a cation electrode may produce a useful enzyme electro...

This study was done on one nurseries affiliated to the center of Najaf governorate during growing season 2021-2022 corresponding 25/11/2021 determination effect Irrigation with magnetically treated water three intensity (0, 750, 1500) gauss and uses Super Micro Nano-fertilizer levels, first level (0 g.L-1), second (1 g.L-1) third (2 g.L-1). On some physiological indicators in pepper (Capsicum a...

A physic-mathematical model has been developed that is suitable for biosensors incorporating membranes and bisubstrate enzymes. The set of equations regarding the transport of reactants across the membrane, the bisubstrate enzymatic reaction, back diffusion of reactants and reaction products, are written down and simultaneously solved and transient response of the electrode is determined as...

a physic-mathematical model has been developed that is suitable for biosensors incorporating membranes and bisubstrate enzymes. the set of equations regarding the transport of reactants across the membrane, the bisubstrate enzymatic reaction, back diffusion of reactants and reaction products, are written down and simultaneously solved and transient response of the electrode is determined as a f...

An assay technique, homogeneous enzyme immunoassay, is described for the quantitative determination of morphine derivatives in biological fluids. An enzyme is labeled with morphine. When the enzymelabeled morphine is bound by antimorphine antibodies, the enzyme is rendered inactive. Free morphine competes with enzyme-morphine for antibody binding sites preventing inhibition of enzyme activity. ...