Abstract: A sanitizer system, comprising: a housing having an air intake end and an air outflow end; a fan disposed at the air outflow end; a cap disposed at the air intake end, the cap being coupled to an edge of the housing, the cap being spaced apart from the housing so that an intake port is formed between the cap and the housing; and an ultraviolet (UV) lamp disposed within the housing, the UV lamp being arranged to disinfect air that enters the housing through the intake port before the air is expelled by the fan through the air outflow end of the housing.

Abstract: A square deflector insert for a drop ceiling made of four identical sides that can be simply field assembled and installed. In contrast to previous single-piece inserts, the new inserts provide much more compact packaging for shipping but can be assembled quickly just before installation. Although described in terms of a square deflector the invention is applicable to other polygonal shapes.

Abstract: A square deflector insert for a drop ceiling made of four identical sides that can be simply field assembled and installed. In contrast to previous single-piece inserts, the new inserts provide much more compact packaging for shipping but can be assembled quickly just before installation. Although described in terms of a square deflector the invention is applicable to other polygonal shapes.

Abstract: A method for fabricating a solid state semiconductor gas sensor and the semiconductor sensor itself for use in equipment detecting small amounts of H.sub.2 S. The method of sensor fabrication comprises spray deposition of a mixture of metal oxides mixed together with various metal and non-metal materials which serve in the finished product as activators, dopants, and/or film binder materials, and including in suspension a molecular sieve material, for enhancing porosity on a scale of molecular dimensions in the finished sensor. All of the foregoing materials are suspended in a suitable solution and preferably sprayed onto a heated insulating substrate to form the finished product. The example sensor, capable of selective detection of H.sub.2 S in air and a sensitivity of less than 1 PPM (part per million), is comprised of a platinum activated alumina, tin oxide, and zeolite molecular sieve material.