Semiconductor-on-insulator structures and methods of fabricating XOI structures are provided. Moreover, ventilation holes are formed in the side surface of the support frame for allowing air inside the apparatus to escape. , and a second granular ferrite compound phase containing Sr, La, Fe and Co and having a Curie temperature Tc2 between 437\xb0 C. At least one evacuation hose is attached to the underneath of the housing and extends to the ventilated toilet seat to establish fluid communication from the interior of the toilet bowl to the interior of the housing.