Abstract: The present invention pertains to apparatus and methods for measuring elastic modulus (Young's modulus) of non-solid materials, including honeycomb ceramic materials used in the filtration and/or treatment of exhaust gasses, through a range of temperatures.

Abstract: The present invention pertains to apparatus and methods for measuring elastic modulus (Young's modulus) of non-solid materials, including honeycomb ceramic materials used in the filtration and/or treatment of exhaust gasses, through a range of temperatures.

Abstract: An improved magnetic stirring apparatus capable of suspending solids in a liquid medium comprising: a vessel for containing fluids and solids, having walls, a bottom, and an opening; a stirrer having a magnetic impeller and a shaft, a means for rotating the magnetic impeller; and a closure; wherein the improvement is characterized by:(a) the shaft having;(i) an upper portion; and(ii) a narrower lower portion; an upper bearing surface being formed where the lower portion extends outwardly to the upper portion;(b) an elongated shaft support member which(i) is attached to the closure; and(ii) has an aperture dimensioned and configured to receive the lower shaft portion and allow free rotation, opposed aperture margins forming a lower bearing surface; and(c) a sling bearing formed by the upper bearing surface engaging the lower bearing surface in the direction of the vessel bottom, thereby suspending the stirrer.

Abstract: Solid-phase immunoassay procedures employing magnetic glass or crystal-containing material, or a superparamagnetic material formed of magnetic particles dispersed in a non-magnetic matrix, as particulate carrier.

Abstract: Method of determining the concentration of a substance in a solution which comprises the steps of incubating the solution with a known amount of radioactively labelled substance and a suspendable composite consisting of anti-substance antibody coupled chemically through an intermediate silane coupling agent to an inorganic carrier, the incubation period being for a time sufficient to form immunochemical complexes, separating the complexes from the solution, determining the radioactivity of either the separated complexes or the remaining solution, and relating that determination to a standard curve. Specific assays for digoxin, insulin, and estriol are disclosed.