A high temperature bonded abrasive includes alumina abrasive grits, and a vitreous bond matrix in which the alumina abrasive grits are distributed, the vitreous bond matrix having a cure temperature not less than 1000\xb0 C. Although the illustrated plastic folding and telescoping eyeglasses appear to be the fragile plastic styles of the past, they possess far greater flexibility and fracture resistance due to new cross-linked polymer plastics used in injection molding processes. Each application processor is configured to process one or more respective application programs and is responsive to the context information. Deterioration of the canister in its fuel-absorbing ability is also detected based on the purge gas density. Each of the sub-amplifiers drive an input of an RF combiner connected between the outputs of the sub-amplifiers and the output of the power amplifier. An upper filter pad and upper baffle are received over the desiccant tube assembly.