ELI the ICE man is an old memory âcrutchâ to help one remember the A.C. current and voltage phase angle relationship in inductors and capacitors. ELI tells us that the voltage (E) leads or comes before current (I) in an inductor (L).
Dipropylene Glycol (DPG). CAS No: 25265-71-8. Dipropylene glycol (DPG) is a colorless, nearly odorless liquid that is soluble in toluene and water. Dipropylene glycol finds many uses as a plasticizer, an intermediate in industrial chemical reactions, as a polymerization initiator or monomer, and as a solvent. It also has uses in cosmetics, and commercial fog fluid.
ONPG has a structure similar to lactose, so it can bind to the enzyme and be cleaved. The products are galactose and ortho-nitrophenolate; ortho-nitrophenolate is yellow in color and can be measured by spectrophotometry. Measuring the rate of an enzyme is tricky business.actose is a disaccharide made of glucose and galactose. It is mostly commonly found in milk (including human milk) so organisms who depend on milk for energy (infants, calves, kittens and other mammalian babies) split it into glucose and galactose. The reaction is greatly aided by an enzyme called lactase.