Techniques for runtime patching of an OS without stopping execution of the OS are presented. User identities for users other than the registered user may be identified. The at least one hydrogen species adsorbs to a surface of the conductive or semiconductive structure so as to substantially prevent passage of the at least one oxidant into or through the conductive or semiconductive structure. The method contemplates separating the magnets from the tubes for removal of the magnetic particles from the magnetic core assembly externally of the tank and independently of the closure. The anode electrode is connected to a source of the transistor, and the cathode electrode is connected to a drain of the transistor.