Abstract: Cooling air extracted from a gas turbine engine compressor is sent to a nozzle vane cooling passage inlet, through the cooling passage, and to a purge tube of the vane. A mixing chamber formed in a diaphragm cavity receives fluid from the purge tube and directs it through exit passage(s) formed through a side wall of the mixing chamber and/or diaphragm cavity to a diametral surface of the diaphragm. The exit passage(s) can be inclined to induce a fluid velocity component substantially parallel to the diametral surface and/or in a rotation direction of a turbine wheel adjacent the diaphragm.

Abstract: Controlling background activity in a computing device or system during a low-power mode is described. In some example techniques, when a computing device or system is in a low power mode, a determination is made whether to block one or more trigger events from causing an activation of one or more respective background task operations. Based at least in part on the determination, at least one trigger event may be allowed to cause an activation of a respective background task operation during the low power mode.

Abstract: A linear accelerator head for use in a medical radiation therapy system can include a housing, an electron generator configured to emit electrons along a beam path, and a microwave generation assembly. The linear accelerator head may include a waveguide that is configured to contain a standing or travelling microwave. The waveguide can include a plurality of cells that are disposed adjacent one another, wherein each of the plurality of cells may define an aperture configured to receive electrons therethrough. The linear accelerator head can further include a converter and a primary collimator.

Abstract: A computing system includes one or more processors and a storage device that stores computer executable instructions that can be executed by the processors to cause the computing system to perform the following. The system generates a work tracking information ticket for a first system entity. The system assigns the work tracking information ticket to the first system entity. The system passes the work tracking information ticket to one or more second system entities. The system validates the work tracking information ticket. The validated work tracking information ticket informs that the one or more second system entities are performing work on behalf of the first system entity.

Abstract: A tuned mass system has a bulk mass acted upon by an excitation amplitude and a reaction mass coupled to the bulk mass. A resistance-to-motion controlled coupling mechanism associated with the reaction mass is configured to proportionally modulate independent of excitation force such that the relative phase of the bulk mass and the reaction mass is substantially constant throughout an extended range of excitation amplitude. The resistance-to-motion controlled coupling mechanism is a Variable Aperture Reciprocating Reed (VARR) Valve in one embodiment, and operates as a passive mechanism. In other embodiments, active resistance-to-motion controlled coupling mechanisms are employed.

Abstract: Cooling air extracted from a gas turbine engine compressor is sent to a nozzle vane cooling passage inlet, through the cooling passage, and to a purge tube of the vane. A mixing chamber formed in a diaphragm cavity receives fluid from the purge tube and directs it through exit passage(s) formed through a side wall of the mixing chamber and/or diaphragm cavity to a diametral surface of the diaphragm. The exit passage(s) can be inclined to induce a fluid velocity component substantially parallel to the diametral surface and/or in a rotation direction of a turbine wheel adjacent the diaphragm.

Abstract: Cooling air extracted from a gas turbine engine compressor is sent to nozzle vane cooling passage inlets, through the cooling passages, and to purge tubes of a set of two or more vanes. A mixing chamber formed between the purge tubes in a diaphragm cavity receives fluid from the purge tubes and directs it through exit passage(s) formed through a wall of the mixing chamber to a surface of the diaphragm. The exit passage(s) can be inclined to induce a fluid velocity component substantially parallel to the surface and/or in a rotation direction of a turbine wheel.

Abstract: A track roller assembly for supporting telescoping boom sections of aerial devices. The track roller assembly is positioned in an interior channel of a hollow first boom section. The track roller assembly supports a majority of the weight of a second boom section and facilitates the second boom section telescoping in and out of the first boom section. The track roller assembly comprises a bracket to securely couple the track roller assembly to the interior channel of the first boom section, a plurality of rollers rotatably connected to the bracket, and a continuous track engaging the plurality of rollers on an interior surface and adjacent to the second boom section on an exterior surface.

Abstract: Controlling background activity in a computing device or system during a low-power mode is described. In some example techniques, when a computing device or system is in a low power mode, a determination is made whether to block one or more trigger events from causing an activation of one or more respective background task operations. Based at least in part on the determination, at least one trigger event may be allowed to cause an activation of a respective background task operation during the low power mode.

Abstract: Controlling background activity in a computing device or system during a low-power mode is described. In some example techniques, when a computing device or system is in a low power mode, a determination is made whether to block one or more trigger events from causing an activation of one or more respective background task operations. Based at least in part on the determination, at least one trigger event may be allowed to cause an activation of a respective background task operation during the low power mode.

Abstract: A track roller assembly for supporting telescoping boom sections of aerial devices. The track roller assembly is positioned in an interior channel of a hollow first boom section. The track roller assembly supports a majority of the weight of a second boom section and facilitates the second boom section telescoping in and out of the first boom section. The track roller assembly comprises a bracket to securely couple the track roller assembly to the interior channel of the first boom section, a plurality of rollers rotatably connected to the bracket, and a continuous track engaging the plurality of rollers on an interior surface and adjacent to the second boom section on an exterior surface.

Abstract: This invention relates to an air purification apparatuses and methods for air purification. The air purification apparatuses pass air through energy beams that form one or more fields of energy within a chamber to produce an outflow of sterilized air. In some aspects, a charge generation system is implemented to repel particles from the chamber walls. In some aspects, the fields of energy extend across substantially an entirety of the cross sectional area of the interior volume of the chamber and longitudinally within the chamber. In some aspects, a controller is configured to rotate a beam of collimated light energy within the chamber at a rotational velocity corresponding to at least V/W, wherein V is the linear velocity of a particle within the chamber along the longitudinal axis, and W is the width of the beam of collimated light energy.

Abstract: Controlling background activity in a computing device or system during a low-power mode is described. In some example techniques, when a computing device or system is in a low power mode, a determination is made whether to block one or more trigger events from causing an activation of one or more respective background task operations. Based at least in part on the determination, at least one trigger event may be allowed to cause an activation of a respective background task operation during the low power mode.

Abstract: An integrated database and information server are provided that efficiently share information and tasks between various stored value programs. A server is configured to provide reusable objects and data structures that are suitably shared between various stored value products. A database at the server allows data to be shared between various programs so that each consumer associates with only one database record even though that consumer may use multiple shared value products. By integrating modules and avoiding duplicate records, the record communicates with all stored value programs, so the information does not need to be repeatedly entered into the database. Moreover, new stored value products are quickly and easily created through selection and arrangement of various shared objects preferably maintained within the database.

Abstract: This invention relates to an air purification apparatuses and methods for air purification. The air purification apparatuses pass air through energy beams that form one or more fields of energy within a chamber to produce an outflow of sterilized air. In some aspects, a charge generation system is implemented to repel particles from the chamber walls. In some aspects, the fields of energy extend across substantially an entirety of the cross sectional area of the interior volume of the chamber and longitudinally within the chamber. In some aspects, a controller is configured to rotate a beam of collimated light energy within the chamber at a rotational velocity corresponding to at least V/W, wherein V is the linear velocity of a particle within the chamber along the longitudinal axis, and W is the width of the beam of collimated light energy.

Abstract: A portable air sterilization apparatus includes a portable chamber forming an interior volume, a portable source for producing a single beam of collimated light energy, and a rotating beam redirector. The portable chamber includes a first end for introducing air into the chamber, a second end for permitting air to exit from the chamber, a transparent orifice through which a single beam of collimated light energy can be introduced into the interior volume of the chamber; and at least one reflective wall. The rotating beam redirector is adapted to rotate through a complete revolution about a rotational axis and to redirect the single beam of collimated light energy within the chamber during said revolution.

Abstract: A portable air sterilization apparatus includes a portable chamber forming an interior volume, a portable source for producing a single beam of collimated light energy, and a rotating beam redirector. The portable chamber includes a first end for introducing air into the chamber, a second end for permitting air to exit from the chamber, a transparent orifice through which a single beam of collimated light energy can be introduced into the interior volume of the chamber; and at least one reflective wall. The rotating beam redirector is adapted to rotate through a complete revolution about a rotational axis and to redirect the single beam of collimated light energy within the chamber during said revolution.

Abstract: An integrated database and information server are provided that efficiently share information and tasks between various stored value programs. A server is configured to provide reusable objects and data structures that are suitably shared between various stored value products. A database at the server allows data to be shared between various programs so that each consumer associates with only one database record even though that consumer may use multiple shared value products. By integrating modules and avoiding duplicate records, the record communicates with all stored value programs, so the information does not need to be repeatedly entered into the database. Moreover, new stored value products are quickly and easily created through selection and arrangement of various shared objects preferably maintained within the database.

Abstract: An integrated database and information server are provided that efficiently share information and tasks between various stored value programs. A server is configured to provide reusable objects and data structures that are suitably shared between various stored value products. A database at the server allows data to be shared between various programs so that each consumer associates with only one database record even though that consumer may use multiple shared value products. By integrating modules and avoiding duplicate records, the record communicates with all stored value programs, so the information does not need to be repeatedly entered into the database. Moreover, new stored value products are quickly and easily created through selection and arrangement of various shared objects preferably maintained within the database.

Abstract: An integrated database and information server are provided that efficiently share information and tasks between various stored value programs. A server is configured to provide reusable objects and data structures that are suitably shared between various stored value products. A database at the server allows data to be shared between various programs so that each consumer associates with only one database record even though that consumer may use multiple shared value products. By integrating modules and avoiding duplicate records, the record communicates with all stored value programs, so the information does not need to be repeatedly entered into the database. Moreover, new stored value products are quickly and easily created through selection and arrangement of various shared objects preferably maintained within the database.