Abstract: Hybrid ventilation apparatuses, systems and methods are provided. Some example mechanical ventilation apparatuses include a gas delivery system, at least one oxygen concentrator for generating oxygen enriched gas for delivery to a patient, at least one pressurized oxygen source for providing oxygen for delivery to the patient, and a controller. Based at least in part on an FIO2 setting for the gas to be delivered to the patient, the controller may determine an oxygen enriched gas flow rate of the oxygen enriched gas and a pressurized oxygen source flow rate of the oxygen from the at least one pressurized oxygen source, for the gas to be delivered to the patient. The controller may control the gas delivery system to deliver the gas to the patient in accordance with the FIO2 setting, the determined oxygen enriched gas flow rate, and the determined pressurized oxygen source flow rate.

Abstract: The present invention relates to mechanical devices and methods allowing the safe removal of heavy, difficult to handle fragments from an explosive destruction system (EDS).

Abstract: A bioreactor assembly of the present invention for holding a media and supporting growth of a plurality of plants. The assembly includes a light source and a container having a light transmissive wall structure and defining a reservoir. A major axis of the reservoir is substantially horizontal allowing the reservoir to be filled with media to a partial level and to define a relatively large surface area for support of the plants. The assembly may also include clamps to secure and seal separate wall structure portions of the container together, and end caps to the wall portions, to define an aseptic environment. As another option, the clamps may define openings therethrough that allow passage of various devices for measuring and controlling bioreactor function such as a gas supply nozzle, a gas exit nozzle, an air temperature probe, a pH probe, a sampling drain, a gas composition probe and a media temperature probe.

Abstract: A wood splitting axe head for mounting on an axe handle in which the weight is distributed such that the plane through the center of gravity of the axe head (gravity plane) is offset with respect to the longitudinal plane through which the axe is swung and which passes through the center of the axe handle (swing plane). Further, the splitting edge of the blade is separated from the gravity plane in the direction of the swing plane and has one face parallel to the swing plane which is provided with a step to limit axe penetration into the wood and to initiate a turning motion of the axe head after impact.

Abstract: A saucer shaped flying toy has imbedded therein a chirp producing whistle device which operates when the toy is thrown and spun in either direction. The whistle has a raised portion with an elongated sharp-edged opening. The raised portion extends into the airstream passing over the toy to provide turbulent air flow past the whistle opening.