The invention provides a lead structure having a lead of low resistance material disposed within a surrounding sleeve or collar of low expansion material which is bonded at one end to the lead. The sleeve or collar is bonded on its outer surface to an insulating wall through which the lead structure extends. The lead is preferably copper and the sleeve or collar is preferably a nickel …
Evaluating of hermetic bags for long. May 01, 2021All the hermetic bags were carefully inspected for holes and sealing imperfections before the initiation of the experiments (Vales et al., 2014; Sanon et al., 2011). The hermetic bags were sealed with plastic sealing machine, and the non-hermetic bags were sealed with Twine.