Abstract: A cementitious composition is provided that comprises an effective amount of bottom ash and an effective amount of cement. In one embodiment, a structural product formed from mixing the composition with an effective amount of water has a seven-day compressive strength of at least about 2,500 psi and, more preferably, a seven-day compressive strength of at least about 4,000 psi. In another embodiment, a structural product formed from mixing the composition with an effective amount of water has a twenty-eight-day compressive strength of at least about 4,000 psi and, more preferably, a twenty-eight-day compressive strength of at least about 5,000 psi.

Abstract: A low-cost detector of hydrogen-containing compounds in gas or thin-film samples is disclosed. The device preferably includes an alpha particle source, an energy degrading medium, a charged particle detector (e.g. a solid state diode detector), and amplification, threshold, counting, logic, timing circuits, humidity correction apparatus, and alarm/display. The invention relies upon the use of the energy degrading foil to pass selectively certain particles. Energetic alpha particles from a radioactive source enter the sample and hydrogen nuclei, or protons, elastically scattered by alpha particles, are able to penetrate the energy degrading foil which is thick enough to stop the alpha particles. The protons are detected and a suitable output signal can be produced to provide an accurate measure of the quantity of hydrogen in the gas or thin-film sample. The hydrogen detector can be combined with a smoke detector to produce an apparatus capable of detecting both smoke and hydrogen.

Abstract: A laminated container structure in which a peelable coupon or the like forms an integral portion of the outer ply of the container wall and is defined by a perforated tear outline. In one embodiment, a release agent is coated on the back of the coupon area to prevent adherence of the coupon to the adhesive joining together the outer and inner plies of the container. In another embodiment, the inner ply is formed of cylinderboard adhesively fastened to the outer ply, the perforate coupon tear outline extending through the outer ply, adhesive and outermost layer of the inner ply so that peeling of the coupon will not remove the inner layers of the inner ply and thus not destroy the integrity of the container.

Abstract: A laminated or multiple-ply container structure comprising an inner wall of a substantially rigid material and an outer wall of a thin, generally pliant material, such as a glossy finished paper, adhesively fastened thereto by a suitable adhesive or glue. Formed in the outer wall of the container, as an integral component thereof, and through the intermediary of a tear outline constituted of perforations extending through at least the outer ply or wall is a section constituting a readily removable or peelable coupon-like panel, with the peeling off of the panel adapted to be effectuated without adversely affecting the integrity of the container structure or necessitating the use of special cutting instruments or tools.

Abstract: A fluidized bed system characterized by a fluidized bed chamber for coating objects dipped therein, the chamber having a bottom surface through which pressurized air is diffused uniformly throughout the cross sectional area of the chamber, and means for controlling the volume of air to effect a smooth suspended powder condition within the chamber during operation.

Abstract: An air filter system for filtering solid particles from air, characterized by a plurality of flexible filter tubes having walls permeable to air and impermeable to solid particles, and mechanical means for shaking the filter tubes to dislodge any deposited solid particles from the tubes which means comprises a vibrating structure.