An activation restricting apparatus for an engine starting system that may be produced with a compact size. The compositions possess a reduced Greenhouse Warming Potential, yet have a capacity and energy efficiency ideally within 20% of the values of those attained using R-134a, and preferably within 10% or less of these values. Bone cement or other material may be provided to alternatively secure the positioned supporting structure for treatment. The one or more adjustment signals may provide constant current biasing of the first circuit. This invention also provides a method of treating allergic rhinitis or chronic obstructive pulmonary disease in a subject comprising the step of administering to a subject a compound comprising a lipid or phospholipid moiety bond to a physiologically acceptable monomer, dimer, oligomer, or polymer, andor a pharmaceutically acceptable salt or a pharmaceutical product thereof.