Abstract: Disclosed is a rack fastener to engage and retain a first member and hold a second member to the first member. The fastener has two coextensive studs, each having base portions, to install from a back surface of the first member each into separate apertures thereof, such that the studs extend through the separate apertures from a front surface of the first member. A connecting portion connects the two base portions. There is also, a clipping portion extending, directly or indirectly, from one of the base portions, the clipping portion having at least one engagement face to engage a region of another aperture of the first member so that the fastener is substantially prevented from being separated from the first member. The two studs can pass through respective apertures of the second member, and thereafter fasteners can engage each stud to secure the second member to the first member.

Abstract: A fracturing manifold system including a first plurality of junctions mounted on a support structure and fluidly connected via conduit, individual ones of the first plurality of junctions configured to receive fracturing fluid from at least one fracturing pump and the first plurality of junctions including a first terminal junction. The fracturing manifold system further includes a fracturing head fluidly connected to the first plurality of junctions. The fracturing manifold system is configurable between a first configuration in which the fracturing head is mounted at a location proximate an end of the support structure and a second configuration in which an additional junction is mounted on the first support structure at the location, the additional junction is fluidly connected to the first plurality of junctions, a second plurality of junctions is fluidly connected to the additional junction, and the fracturing head is fluidly connected to the second plurality of junctions.

Abstract: A fracturing system includes a plurality of junctions mounted on a chassis, such as a trailer chassis. Pressurized fluid is provided to the plurality of junctions via a plurality of conduits, e.g., from one or more pumps. The junctions and the conduits are independently mounted and independent vibration dampening systems damp vibrations at the individual mounts. Vibration of individual of the junctions may be damped by a first dampening system having first dampening properties and individual of the conduits may be damped by a second dampening system having second dampening properties different from the first dampening properties.

Abstract: Methods for detecting the presence of sever acute respiratory coronavirus 2 (SARS-CoV-2) are provided. The methods comprise incubating a sample comprising T-cells from an individual with one or more SARS-CoV-2 antigens, each antigen having a T-cell epitope, and detecting a change in state of T-cells in the sample. The change in state may be detected by determining the presence or level of a secreted, immune response indicator, such as interferon-gamma (IFN-?).

Abstract: A time multiplexed, selectively updated, sub-pixel less, self-aligning, electrically and optically dual addressed, multi directional pixel is provided. This can potentially greatly increase the performance of an automultiscopic display and reduce the complexity. In one embodiment, an automultiscopic display can simply be provided by a plurality of directional OLED pixels.

Abstract: A fracturing manifold system including a first plurality of junctions mounted on a support structure and fluidly connected via conduit, individual ones of the first plurality of junctions configured to receive fracturing fluid from at least one fracturing pump and the first plurality of junctions including a first terminal junction. The fracturing manifold system further includes a fracturing head fluidly connected to the first plurality of junctions. The fracturing manifold system is configurable between a first configuration in which the fracturing head is mounted at a location proximate an end of the support structure and a second configuration in which an additional junction is mounted on the first support structure at the location, the additional junction is fluidly connected to the first plurality of junctions, a second plurality of junctions is fluidly connected to the additional junction, and the fracturing head is fluidly connected to the second plurality of junctions.

Abstract: A fracturing system includes a plurality of junctions mounted on a chassis, such as a trailer chassis. Pressurized fluid is provided to the plurality of junctions via a plurality of conduits, e.g., from one or more pumps. The junctions and the conduits are independently mounted and independent vibration dampening systems damp vibrations at the individual mounts. Vibration of individual of the junctions may be damped by a first dampening system having first dampening properties and individual of the conduits may be damped by a second dampening system having second dampening properties different from the first dampening properties.

Abstract: A nut for joining fluid conduits in a joint assembly includes a nut body having an inner body surface forming a through-bore, for supporting a first fluid conduit and a second fluid conduit. Internal threads upon the inner body surface advance in a helical path around a nut center axis between a thread origin, and a thread terminus that is located between first and second axial end faces of the nut body. At least one of the thread terminus and the thread origin is located within an increased thickness region formed by a varied radial thickness of the nut. The nut has a reduced risk of cracking in service.

Abstract: An audio assembly provides audio content to a user. The audio assembly comprises an elongated body, a negative vent assembly, and a positive vent assembly. The elongated body includes an audio waveguide. The negative vent assembly is coupled to the elongated body and includes at least one negative vent that vents negative acoustic pressure waves generated by a back surface of a transducer coupled to a first end of the audio waveguide. The positive vent assembly is part of the elongated body and is coupled to a second end of the audio waveguide. The positive vent assembly includes at least one positive vent that vents positive acoustic pressure waves generated by a front surface of the transducer.

Abstract: Systems and processes for operating a digital assistant are provided. In one example process, a speech input is received from a user. A user intent is determined based on the speech input. Determining the user intent includes generating text based on the speech input, performing natural language processing of the text, and determining the user intent based on a result of the natural language processing. In accordance with the user intent, status information associated with at least one of the one or more electronic devices is requested. The status information associated with the at least one of the one or more electronic devices is received. A spoken output is generated and represents the status information associated with the at least one of the one or more electronic devices. The spoken output is caused to be provided to the user.