Dielectric Dispersion in Crystalline Di-isopropyl Ketone

Aging of di-isopropyl-phosphorylated human butyrylcholinesterase.

Organophosphate-inhibited cholinesterases can be reactivated by nucleophilic compounds. Sometimes phosphylated (phosphorylated or phosphonylated) cholinesterases become progressively refractory to reactivation; this can result from different reactions. The most frequent process, termed 'aging', involves the dealkylation of an alkoxy group on the phosphyl moiety through a carbocation mechanism. ...

Dielectric dispersion of erythrocyte ghosts.

The underlying mechanism of the low-frequency dielectric dispersion, called the alpha dispersion, of osmotically lysed erythrocytes (erythrocyte ghosts) has remained open since its finding [H. P. Schwan and E. L. Carstensen, Science 125, 985 (1957)]. The alpha dispersion is peculiar to erythrocyte ghosts and has never been observed for intact erythrocytes. Numerical calculation based on interfa...

Dielectric dispersion in lithiumebismuth-borate glasses

DIELECTRIC DISPERSION IN SOLUTIONS OF FLEXIBLE POLYMERSt

INTRODUCTION The dielectric properties of polar chain polymers have long1'2 been of great interest to many workers. For solid materials, there is great practical justification for such interest in the sometimes very close relation between mechanical and electrical behaviour, as well as in direct applications to problems of electrical insulation. The study of dielectric constant and loss in dilu...

Removal of Acetone and Methyl Isopropyl Ketone in a Composite Bead Biofilter

Removal of acetone and methyl isopropyl ketone (MIPK) in a composite bead biofilter was investigated. Both microbial growth rate kg and biochemical reaction rate kd would be inhibited at higher inlet concentration. For the microbial growth process, the kg value of MIPK was greater than that of acetone and the inhibitive effect for MIPK was more sensitive than that for acetone in the average inl...