Through Vial Impedance Spectroscopy. A process analytical technology based on the measurement of the electrical impedance spectra of a solution contained within a freeze drying vial during the process of freeze drying. In this method the electrodes are external to the vial, hence the term "through-vial" impedance spectroscopy. The methodology for monitoring product temperatures and drying rates was first developed by researchers at De Montfort University, Leicester, United Kingdom.

Toyota Variable Induction System

Television International Soundtrack.

Please see "Title V Information System."

TVIS may refer to: T-VIS, which stands for Toyota Variable Induction System, is a variable intake system designed by Toyota. Treadmill with Vibration Isolation System is a treadmill which has been des [..]