Abstract: A bulkhead assembly is provided for dividing a storage compartment into two or more sub-compartments. The bulkhead includes a peripheral seal member mounted at an edge of the bulkhead assembly for engagement with interior surfaces defining at least a portion of the storage compartment. Seals are constructed and configured so as to be reversible to provide a second sealing surface to replace the first sealing surface when it becomes worn or ineffective. The seals may be mounted to the panel assembly via mechanical fasteners permitting easy reversal of the seal members.

Abstract: An accessory for wild birds is formed from a plurality of ceramic clay flowerpots disposed in preselected relation to each other. The accessory includes a receptacle formed from a ceramic flowerpot. The receptacle has a first end and a second end and a continuous side wall of the receptacle extends between the first end and the second end of the receptacle. The continuous side wall defines a plurality of openings of preselected sizes disposed at preselected positions. At least one of a top and a bottom formed of a ceramic clay flowerpot are positioned coaxially and adjacent to at least one of the first end and the second end of the receptacle.

Abstract: A high voltage electrical device (20), having a substrate layer (22), base layer (24) and top layer (26), provides high voltage properties in excess of 1000V. Slicing a wafer (28) from an ingot (30) created in by monocrystalline growth forms the substrate layer (22), and this high quality crystal is used as the high resistivity layer in the device (20). The base layer (24) is a highly doped, low resistivity, epitaxial layer deposited on the lower surface (32) of the substrate layer (22) at a fast rate greater than approximately 2 microns/minute. The top layer (26) is a diffusion layer diffused into an upper surface (34) of the substrate layer (22). To control stress in the wafer (28), the epitaxial base is doped with germanium.

Abstract: An X-ray generator comprises an evacuated and sealed X-ray tube, containing an electron gun and an X-ray target. An electron beam is produced by the electron gun in which the cathode is at negative high voltage, the electron gun consisting of a filament just inside the aperture of a Wehnelt grid which is biased negatively with respect to the filament. Two sets of beam deflection coils, are employed in two planes, mounted between the anode of the electron gun and the focussing lens to center the beam. Between the focussing lens and the target is an air-cored quadripole magnet which acts as a stigmator in that it turns the circular cross-section of the beam into an elongated one. This quadripole can be rotated about the tube axis so as to adjust the orientation of the line focus. The beam can be moved about on the target surface by controlling the currents in the four coils of the quadripole.

Abstract: A method of optimizing a mechanical cardiac pumping device includes modeling the circulatory system of the patient who will receive the mechanical cardiac pumping device and identifying an operating condition of the native heart to which the device will respond. The model is used to determine the required blood volume to be ejected from the device and an initial estimate of the power required to be provided to the mechanical cardiac pumping device is provided in order to provide the required ejected blood volume. The resultant ejected blood volume is evaluated with data obtained from the model and the estimate of the power requirement is then updated. The above steps are iteratively performed until the power required to obtain the necessary ejected blood volume is identified.

Abstract: Metering equipment for metering fluid flow through an injector valve, comprising metering means and locating means arranged to locate such a valve in fluid communication with the metering means. The metering means are upstream of the locating means.