What is jar testing? Jar testing is a method of simulating a full-. scale water treatment process, providing sys-. tem operators a reasonable idea of the way a. treatment chemical will behave and operate. with a particular type of raw water. Because it. mimics full-scale operation, system operators.
Read Uncommitted. This is the lowest isolation level there is. Read uncommitted causes no shared locks to be requested which allows you to read data that is currently being modified in other transactions. It also allows other transactions to modify data that you are reading.his is the lowest isolation level there is. Read uncommitted causes no shared locks to be requested which allows you to read data that is currently being modified in other transactions. It also allows other transactions to modify data that you are reading.
1 Pure-tone average (PTA) is the average of hearing sensitivity at 500, 1000, and 2000. 2  This average should approximate the speech reception threshold (SRT), within 5 dB, and the speech detection threshold (SDT), within 6-8 dB. Examples of abnormalities include occlusion of the external auditory canal by cerumen or a mass, middle ear infection and/or fluid, perforation of the tympanic membrane, or ossicular abnormalities. 2  Pure-tone air-conduction thresholds are poorer than bone-conduction thresholds by more than 10 dB (see image below).