Abstract: A system may include first lens with a first optical component and a first mounting structure having a first wall on a first side and a second wall on second side, each wall having a gap. The system may further include a second lens that interlocks with the first lens. The second lens includes a second optical component and a second mounting structure that engages with the first mounting structure. The second mounting structure has a first barrier with a first protrusion and a second barrier with a second protrusion. The first and second protrusions positioned complementary to the gaps of the first mounting structure and configured to engage with the gaps, where engagement of the protrusions into the gaps provides passive rotational alignment of the optical components about the optical axis.

Abstract: A method of creating a digital activity may include selecting an interactive digital design element to be added to the digital activity, the interactive digital design element configured to allow multiple users to interact with the interactive digital design element when deploying the digital activity. The method may include generating a data structure, the data structure representative of a repository into which data representative of user inputs are stored when interacting with the interactive digital design element when deployed. The method may include deploying the interactive digital design element in a visual space shared between the multiple users.

Abstract: An system, method, and non-transitory computer readable medium for managing traffic at a worksite. The system includes a traffic control signal, a wireless interface, a mast, a support base, a wireless control device, and a base station for communicating between the wireless interface and the wireless control device. The method involves receiving input from the wireless control device, generating a control signal got the traffic control signals. The non-transitory computer readable medium is encoded with codes for directing a processor to carry out the method.

Abstract: The present disclosure features a protein-polymer conjugate, including a multivalent polymer building block, a stimuli-responsive protein covalently conjugated to the multivalent polymer building block to provide a protein-polymer conjugate, wherein the protein undergoes a modification upon exposure to a predetermined stimulus, and the protein modification triggers a physical and/or chemical response in the protein-polymer conjugate.

Abstract: A heating element unit for an electric resistance heater comprises: a casing; a heating element within the casing; an electrical supply pin in electrical contact with the heating element; an electrically insulating filler between the heating element and the casing; and an electrically insulating barrier provided between portions of the heating element, the electrical supply pin and/or the casing. The electrically insulating barrier has a greater dielectric strength than the electrically insulating filler, and the dielectric strength of the electrically insulating barrier is greater than about 1500 kV/m (greater than about 40 V/mil).

Abstract: A method of fracturing a subterranean formation includes establishing a plurality of zones in a wellbore, fracturing and then isolating a first of the zones using a ball-activated sleeve such that proppant flow from the formation into the first zone is reduced, and fracturing and then isolating at least one other of the zones uphole of the first zone.

Abstract: A method of fracturing a subterranean formation includes establishing a plurality of zones in a wellbore, fracturing and then isolating a first of the zones using a ball-activated sleeve such that proppant flow from the formation into the first zone is reduced, and fracturing and then isolating at least one other of the zones uphole of the first zone.

Abstract: There is provided a holographic projector comprising a spatial light modulator, a light source and an assembly. The spatial light modulator is arranged to display a hologram. The light source is arranged to illuminate at least one region of the spatial light modulator with an input beam such that the input beam is spatially modulated by the spatial light modulator in accordance with the hologram to form a holographic reconstruction. The assembly is arranged to move at least one of the input beam and the spatial light modulator relative to the other.

Abstract: A shear bolt can include a body having a shear portion. A port in the body may be used for introducing a fluid into the body. A core disposed in the body may include a chamber at least partially surrounded by the shear portion. A fluid pressure in the chamber and exerted against the shear portion may be increasable in response to the fluid being introduced through the port, such as to increase an amount of stress in the shear portion and prime the shear bolt for shearing. Additionally or alternatively, a support structure positioned in the chamber may be frangible to reduce support to the shear portion in response to the fluid being introduced through the port, for example, to contribute to priming the shear bolt for shearing.

Abstract: The present disclosure features a protein-polymer conjugate, including a multivalent polymer building block, a stimuli-responsive protein covalently conjugated to the multivalent polymer building block to provide a protein-polymer conjugate, wherein the protein undergoes a modification upon exposure to a predetermined stimulus, and the protein modification triggers a physical and/or chemical response in the protein-polymer conjugate.

Abstract: A shear bolt can include a body having a shear portion. A port in the body may be used for introducing a fluid into the body. A core disposed in the body may include a chamber at least partially surrounded by the shear portion. A fluid pressure in the chamber and exerted against the shear portion may be increasable in response to the fluid being introduced through the port, such as to increase an amount of stress in the shear portion and prime the shear bolt for shearing. Additionally or alternatively, a support structure positioned in the chamber may be frangible to reduce support to the shear portion in response to the fluid being introduced through the port, for example, to contribute to priming the shear bolt for shearing.

Abstract: Disclosed are expandable bullnose assemblies. One bullnose assembly includes a body and a bullnose tip arranged at a distal end of the body, a compression ring arranged about an exterior of the body and configured to axially translate with respect to the body upon being actuated, and a plurality of collet fingers coupled to and extending between the compression ring and the bullnose tip, each collet finger being pre-compressed such that each collet finger is predisposed to bow radially outwards, wherein, when the compression ring is actuated, the plurality of collet fingers move radially outward from a first diameter to a second diameter that is greater than the first diameter.

Abstract: Disclosed are expandable bullnose assemblies. One bullnose assembly includes a body and a bullnose tip arranged at a distal end of the body, a compression ring arranged about an exterior of the body and configured to axially translate with respect to the body upon being actuated, and a plurality of collet fingers coupled to and extending between the compression ring and the bullnose tip, each collet finger being pre-compressed such that each collet finger is predisposed to bow radially outwards, wherein, when the compression ring is actuated, the plurality of collet fingers move radially outward from a first diameter to a second diameter that is greater than the first diameter.

Abstract: Powdered compositions and methods of use applicable to mitigate a condition of human fatigue among others, including a base composition of at least one finely powdered sugar, a flavoring, a binder and packaging for the compositions including a time incremented gauging means for a consumer to determine the amount of composition ingested according to an estimated duration of biological activity for a given amount ingested. The dry compositions are made available in a variety of flavors and are poured directly into the mouth without pre-mixing with liquids.

Abstract: A composition and method of use applicable to mitigate the effects of human fatigue that includes a base composition of at least one finely powdered simple sugar and at least one finely powdered polysaccharide, a flavoring, a hinder and a single dose packaging. The powdered composition is made available in a variety of flavors within a tubular package that aids in pouring the dry contents directly into the mouth without waste, where it is easily dissolved and assimilated by the body.