1 A urine culture test is done to identify the specific bacteria that are causing a urinary tract infection.2  Ideally, a sample of urine is collected by cystocentesis or by inserting a needle directly into the animalâs bladder. A urine culture test is done to identify the specific bacteria that are causing a urinary tract infection.
The multiplier effect is exploited by governments attempting to use fiscal stimulus policies to increase the general level of economic activity. This can be done in a period of recession or economic uncertainty, when unemployment of labor is high and other resources are underutilized.
Photomultiplier operation. Photons enter the photomultiplier tube and strike the photocathode. When this occurs, electrons are produced as a result of the photoelectric effect. Once the electrons have been generated they are directed towards an area of the photomultiplier called the electron multiplier. As the name suggests, this area serves to increase or multiply the number of electrons by a process known as secondary emission.