A well service fluid comprising one or more anionic viscoelastic surfactants and one or more polymers is described. A recirculation ink supply system using plural buffer vessels is suited for repressurizing the ink without the use of a pump. Then, the group feeds the blanks to an inlet station of the machine, to place them one by one in the station in a placing position. A high power beam from the series is selected for cross correlation with each sub-array output to determine the signal’s relative arrival time at each sub-array. Also provided are methods and materials for treating lung injury, including acute lung injury, which may include hyperpermeability of lung vessels, vascular leakage, the development of edema, asthma, anaphylaxis, angioedema, systemic vascular permeability syndromes, and nasal congestion. This is effectuated by adding an additional relatively thick gate oxide transistor in series with the relatively thin gate oxide MOS N-channel transistors in a conventional high voltage switching circuit to increase the reliable maximum voltage for the high voltage power supply.