نتایج جستجو برای: teflon
تعداد نتایج: 1952 فیلتر نتایج به سال:
We conducted a retrospective study to compare poststapedectomy hearing gain in study-eligible patients who had received a Teflon (fluoroplastic ASTM F 754) prosthesis (study group; n = 76) with hearing gain achieved in a matched group (by age, sex, and degree of hypoacusis) of patients who had received a Schuknecht-type wire/Teflon prosthesis (control group; n = 70). All procedures had been per...
Teflon surfaces exhibiting self-adaptive behaviour with both highly hydrophilic character and strong coordinating properties are prepared in a straightforward manner by physisorption of the fluorophilic copper(II)-carboxylate complex 2.
Sodium chloride or ammonia was dissolved in the water propellant of pulsed plasma thrusters to improve the performance. Pulsed plasma thrusters using liquid propellant utilize water as attractive alternative instead of Teflon. Water propellant enables the controlling propellant mass flow and leads high specific impulse. However, liquid propellant pulsed plasma thrusters have larger plasma resis...
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