Abstract: Techniques for depowdering in additive fabrication are provided. According to some aspects, techniques are provided that separate powder from additively fabricated parts through liquid immersion of the parts. Motion of the liquid, such as liquid currents, may dislodge or otherwise move powder away from additively fabricated parts to which it is adhered or otherwise proximate to. The liquid may also provide a vehicle to carry away powder from the additively fabricated parts. Removed powder may be filtered or otherwise separated from the liquid to allow recirculation of the liquid to the parts and/or to enable re-use of the powder in subsequent additive fabrication processes. Techniques for depowdering through liquid immersion may be automated, thereby mitigating challenges associated with manual depowdering operations.

Abstract: An improved toilet seat includes an upper body includes an upper sitting surface; a lower body coupled with the upper body, where the lower body includes a lower contact surface; and at least one slideable clamp positioned between the upper sitting surface and the lower contact surface, where the at least one slideable clamp includes a clamp arm and clamp paddle coupled to the clamp arm, and where the clamp arm is configured to move between a first position and a second position.

Abstract: A lid for a candle is provided. The lid comprises an inner housing which includes an inner housing aperture, as well as an iris including an iris guide section and at least two blades. The iris guide section has a respective blade guide slot for each of the at least two blades. Each of the at least two blades has opposing ends, and at least one bolt aperture at each of the opposing ends. A respective bolt extends through each at least one blade guide slot and each bolt aperture thereby engaging the at least two blades with the iris guide section. The iris has an open position and a closed position. In the open position, the inner housing aperture of the lid is open, and in the closed position, the blades of the iris extend over the inner housing aperture, thereby closing the inner housing aperture.

Abstract: A system for detecting Denial-of-Service (DoS) attacks on one or more user profiles collects a number of invalid sign-on attempts on the one or more user profiles during every time interval. The system determines a number of invalid sign-on attempts on every user profile since the start of the first time interval. The system detects a first DoS attack on a particular user profile if a first number of invalid sign-on attempts on the particular user profile exceeds a single-user profile. The system detects a second DoS attack on multiple user profiles during the first time interval if the increase in the total number of invalid sign-on attempts since the last time interval exceeds a scan-level threshold number. The system detects a third DoS attack on multiple user profiles if the total number of invalid sign-on attempts detected during combined time intervals exceeds a third threshold number.

Abstract: A method includes determining a first streamer from a plurality of streamers that are streaming a first video stream, receiving the first video stream from the determined first streamer, timestamping the first video stream, transmitting the timestamped first video stream to a plurality of devices, transmitting a timestamped second video stream generated at a host device to the plurality of devices, and causing, at each of the plurality of devices, synchronized display of the first and the second video streams based on the time stamps.

Abstract: Techniques for depowdering in additive fabrication are provided. According to some aspects, techniques are provided that separate powder from parts by directing gas onto, or near to, the powder. While fragile green parts, such as green parts produced by binder jetting, may be fragile with respect to scraping or impacts, such parts may nonetheless be resistance to damage from directed gas, even if directed at a high pressure. Techniques for depowdering through directed application of gas may be automated, thereby mitigating challenges associated with manual depowdering operations.

Abstract: A method includes for a plurality of devices, each of the plurality of devices having access to a first video stream from at least one of a plurality of streamers of the first video stream, confirming authorization to access the first video stream from one of the plurality of streamers of the first video stream, selecting a first streamer from the plurality of the streamers, receiving the first video stream from the first streamer, transmitting the first video stream to the plurality of devices having confirmed authorization.

Abstract: A thrust reverser cascade of an aircraft engine comprises a frame and a vane overmolded onto the frame. The frame and the vane each comprise reinforcement fibers in a thermoplastic matrix. A method is disclosed for manufacturing the thrust reverser cascade or another part comprising an aerodynamic surface configured to interact with a flow of fluid. The method comprises providing a first portion of the part and overmolding a second portion of the part onto the first portion where the second portion includes the aerodynamic surface.

Abstract: A system and method for balancing flows of renal replacement fluid is disclosed. The method uses pressure controls and pressure sensing devices to more precisely meter and balance the flow of fresh dialysate and spent dialysate. The balancing system may use one or two balancing devices, such as a balance tube, a tortuous path, or a balance chamber.

Abstract: A database management system maintains a collection of data using a log-based storage structure. In response to a request to store data items (key-value pairs), the database management system stores mapping information to a data item in an in-memory data structure while the data items are stored on the log-based storage structure. The hash of the key includes information to identify an index entry that comprises information that maps to the location of the data item stored on the log-based storage structure.

Abstract: A power grid restoration system includes a hybrid power plant that provides electrical power to a power grid. The hybrid power plant includes a power plant that generates electrical power with a power drive. A battery energy storage system, which receives and stores electrical power from the power plant, releases the electrical power during block loading of the power grid. A controller couples to the power plant and to the battery energy storage system. The controller controls charging of the battery energy storage system with the power plant and controls the release of a block load of electrical power from the battery energy storage system and the power plant while block loading the power grid during a black grid restoration.

Abstract: A generation, enhancement, and absorption system for the acquisition of energy from a predetermined chosen environment. The generation, enhancement, absorption system absorbs energy through a process whereby magnetic/electrical fields interact and interlace to create, develop, and support a platform magnetic/electrical energy field that assists and supports in the acquisition of energy from an environment to the generation, enhancement, and absorption system. Coils are used to create magnetic/electrical fields. Ions are placed with the particles in the space surrounding within and without the generation, enhancement, and absorption system. The method of interacting and interlacing of fields creates a platform magnetic/electrical field that moves in a particular direction. The platform magnetic/electrical field starts to access an environmental energy field.

Abstract: The technology disclosed relates to selecting among devices to interact with. It also relates operating a smart phone with reduced power consumption. It further relates to gesturally interacting with devices that lack gestural responsiveness. The technology disclosed also relates to distinguishing control gestures from proximate non-control gestures in a pervasive three dimensional (3D) sensory space. The technology disclosed further relates to selecting among virtual interaction modalities to interact with.

Abstract: A thrust reverser cascade of an aircraft engine comprises a frame and a vane overmolded onto the frame. The frame and the vane each comprise reinforcement fibers in a thermoplastic matrix. A method is disclosed for manufacturing the thrust reverser cascade or another part comprising an aerodynamic surface configured to interact with a flow of fluid. The method comprises providing a first portion of the part and overmolding a second portion of the part onto the first portion where the second portion includes the aerodynamic surface.

Abstract: An apparatus for vertical transfer of whole nuts from a first elevation to a second, lower elevation includes a run extending between an entrance and an exit, and having a plurality of alternatingly arranged conveying panels between the entrance and the exit. Each conveying panel is inclined at approximately 30 degrees to horizontal and has a variable effective conveying width. The apparatus further includes arcuate turn-arounds disposed between respective conveying panels to facilitate transferring the nuts from one conveying panel to the next lower conveying panel. The variable effective conveying width is selected based on a predetermined mass flow rate of nuts such that whole nuts move along the run in a continuous stream without tumbling, and wherein each nut is in contact with adjacent nuts in its respective layer.

Abstract: An apparatus for vertical transfer of whole nuts from a first elevation to a second, lower elevation includes a run extending between an entrance and an exit, and having a plurality of alternatingly arranged conveying panels between the entrance and the exit. Each conveying panel is inclined at approximately 30 degrees to horizontal and has a predefined width. The apparatus further includes arcuate turn-arounds disposed between respective conveying panels to facilitate transferring the nuts from one conveying panel to the next lower conveying panel. The predefined width of the conveying panels is selected based on a predetermined mass flow rate of nuts such that whole nuts move along the run in a continuous stream without tumbling, and wherein each nut is in contact with adjacent nuts in its respective layer.

Abstract: The technology disclosed can provide improved safety by detecting potential unsafe conditions (e.g., collisions, loss of situational awareness, etc.) confronting the user of a wearable (or portable) sensor configured to capture motion and/or determining the path of an object based on imaging, acoustic or vibrational waves. Implementations can enable improved safety to users of virtual reality for machine control and/or machine communications applications using wearable (or portable) devices, e.g., head mounted displays (HMDs), wearable goggles, watch computers, smartphones, and so forth, or mobile devices, e.g., autonomous and semi-autonomous robots, factory floor material handling systems, autonomous mass-transit vehicles, automobiles (human or machine driven), and so forth, equipped with suitable sensors and processors employing optical, audio or vibrational detection.