Printer Friendly Version >>>. The Pony Express made its first run on April 3, 1860 and immediately captured the imagination of the nation. It had been established to provide a speedy method of delivering mail over a two thousand mile route that stretched between St. Joseph. Missouri and Sacramento, California.
Saliva drug test detection times. Drug detection times simply indicate a specific time in which a test can reveal the presence of a drug in the urine, saliva or hair of the user. The specific time will reveal the first time the drug will show up in your body for the first time you took it and the time your body will be clean.
The TR is the time between consecutive 90 degree RF pulse. The TE is the time between the initial 90 degree RF pulse and the echo. The TR, matrix size and NEX are the only parameters that affect scan time. Increasing any one of these parameters increases the minimum scan time.