The oxidase test is used to identify bacteria that produce cytochrome c oxidase, an enzyme of the bacterial electron transport chain. (note: All bacteria that are oxidase positive are aerobic, and can use oxygen as a terminal electron acceptor in respiration.This does NOT mean that they are strict aerobes.he oxidase test is used to identify bacteria that produce cytochrome c oxidase, an enzyme of the bacterial electron transport chain. (note: All bacteria that are oxidase positive are aerobic, and can use oxygen as a terminal electron acceptor in respiration. This does NOT mean that they are strict aerobes.
An encumbrance is an estimate of the salary and benefit expense which will occur for the future. Salary and benefit expense encumbrances are generated semi-monthly. Negative encumbrances (liquidations) reverse the prior semi-monthly period encumbrance by changing (reversing) the sign. Encumbrances are only generated for salaried appointments.
Encumbrance Law and Legal Definition. Encumbrance means a lien or claim on property. It is a burden or claim over a property that is binding on the property. An encumbrance can affect the clarity of a good title, or diminish the value of property. However, it will not prevent transfer of title. Under accounting, an encumbrance is contingent liability, contract, purchases order, payroll commitment, tax payable, or legal penalty that is chargeable to an appropriation account.