Water Operator Licensing Overview. To become licensed as a public water system operator, an applicant must: complete the required course training, meet the required education, meet the required experience, complete the TCEQ application and pay the fee ($111), and pass the applicable exam (minimum score of 70 percent).
an apparatus that rotates at high speed and by centrifugal force separates substances of different densities, as milk and cream. verb (used with object), centrifuged, centrifuging. 2. Also, centrifugalize. to subject to the action of a centrifuge. Origin of centrifuge.
A countercurrent mechanism system is a mechanism that expends energy to create a concentration gradient. It is found widely in nature and especially in mammalian organs. For example, it can refer to the process that is underlying the process of urine concentration, that is, the production of hyperosmotic urine by the mammalian kidney.