Abstract: Glass ceramic for use as a biomaterial comprising CaO 34.6 to 54.6%, SiO.sub.2 24.2 to 44.8 %, P.sub.2 O.sub.5 0 to 8.0%, CaF.sub.2 0.1 to 1.0% and Mgo 1.0 to 10.0% by weight and characterized by a primary wollastonite crystalline phase (CaO, SiO.sub.2) and a secondary apatite crystalline phase, and the process for the preparation thereof are disclosed. The glass ceramic of the present invention has superior mechanical properties, good biocompatibility, bioactivity, and no toxicity making it useful as a biomaterial in artificial bone and dental implants.

Abstract: A semiconductor memory device having an improved data transmission circuit reduces voltage swing width of data to be transmitted from a plurality of memory cells to an output buffer, so as to improve data reading speed.

Abstract: The present invention relates to a beverage container which contains an enclosed pressurized liquid cooling agent whereby when the container is opened the pressurized liquid cooling agents immediately acts to cool the contents of the container.

Abstract: The present invention entails an animal housing structure equipped with a solar heating system for heating the structure. Solar energy is collected by a roof-attic solar collector arrangement and the collected solar energy in the form of heat is transferred to passing air. The heated passing air is selectively directed to the ground underlying the structure and is channeled generally horizontally through the underlying ground at a selected depth below ground level. Heat from the air is transferred to the earth below ground level and this heat is then slowly transferred upwardly through the ground towards ground level where it is ultimately emitted from the earth and acts to heat the interior of the structure and provide warmth for the animals.