Abstract: An avionics unit assembly for an aircraft can include an avionics unit (e.g., an underwater locator device, “ULD”), and a battery to power the avionics unit. The avionics unit assembly can further include a housing that encases the avionics unit and the battery. The housing includes a vent port for exhausting an emission from the housing during a failure of the avionics unit. The avionics unit assembly can further include one or more of a suppressor that filters the emission, a shield element that is resistant to chemical and/or thermal effects of the emission, and a bracket for mounting the avionics unit to a surface. A method integrating the avionics unit assembly onto a forward aircraft bulkhead at a mount location under an aircraft radome and for manufacturing the avionics unit, and an aircraft including the avionics unit are also described.

Abstract: A concrete mortar is formed by mixing together sand, cement, water and a sewage sludge ash. A foam is added to the mortar to form a foamed concrete composition.

Abstract: The invention is a membrane separation device having a housing which serves the dual role of a lightweight, impact-resistant shipping container and a recloseable vessel for the separation membranes. The housing reduces handling of the membranes, facilitates assembly of permeation systems and improves repair, replacement and inspection of membranes. The housing is preferably fabricated from expanded polystyrene. In an alternate embodiment, the configuration of the inside surface of the housing may be altered to provide a non-uniform or non-cylindrical annular space. The separation systems are particularly useful for gas separations.

Abstract: A membrane process for producing an improved product quality comprising feeding a clarified serum at an elevated pressure to a plurality of reverse osmosis units in two stages--the first having high-rejection polyamide membranes and the second having low-rejection membranes, wherein the permeate from the low-rejection membranes is recycled to the high-rejection feed.

Abstract: A membrane process for producing a juice product with improved quality comprising feeding a single strength juice to a plurality of microfiltration/ultrafiltration stages wherein the first stage is a microfilter having a membrane pore size smaller than the spoilage microorganisms but substantially larger than the flavor and aroma molecules and wherein subsequent stages are ultrafilters having membranes of decreasing pore size.

Abstract: An improved pantograph apparatus for the duplication of original works of a large range of sizes, having a modular copying assembly mounted on two spaced support shafts and supported on each shaft at a desired height by upper and lower resilient compression members. The modular copying assembly is interchangeable with other modular copying assemblies to give the inventive apparatus great flexibility in the number of copies reproduced from one original. The resilient compression members are also interchangeable with other resilient compression members of different lengths for placing the copying apparatus at a selected height on the support shafts, which height may correspond to the maximum cross section of the original work being copied.