Definition. 1  Troponins are specific proteins found in heart muscle. Troponin testing is done to diagnose heart attacks (myocardial infarctions). 2  When heart muscle is damaged, as in a myocardial infarction (MI), troponins leak out of cells and into the bloodstream.
Variable Ratio Schedule (VR) This is going to be a little confusing at first, but hang on and it will become clear. A variable ratio schedule (VR) is a type of operant conditioning reinforcement schedule in which reinforcement is given after an unpredictable (variable) number of responses are made by the organism. This is almost identical to a Fixed-Ratio Schedule but the reinforcements are given on a variable or changing schedule.
Note Use this type (instead of Type 3) when the routing client cannot take back the call from the VRU. That is, ICM software automatically instructs the VRU to release when it sends a route response to the routing client. (An example: CWC Network VRUs.) Optional: Send to VRU1, Queue, and Run VRU Script.