Abstract: A screen structure comprising: at least one support element comprising a bistable extendable member; a panel element attached to the at least one support element and comprising a leading edge, wherein the at least one support element and the panel element are configured to be rollable about a first longitudinal axis, to provide for extension and retraction thereof along a direction generally perpendicular to the first longitudinal axis between a first fully extended position and a second position where the at least one support element and the panel element are at least partially retracted; a handle element for extending and retracting the support element and the panel element upon application of a force to the handle element; and characterised by: at least one spacer element configured so that when the at least one support element and the panel element are in the second position, the leading edge of the panel element is substantially parallel with the first longitudinal axis.

Abstract: Pulse-generator-based reciprocal quantum logic (RQL) bias-level sensors are fabricated on an RQL integrated circuit (IC) to sample AC or DC bias values provided to operational RQL circuitry on the RQL IC. The bias-level sensors include pulse generators having strengthened or weakened bias taps (transformer couplings to RQL AC clock resonators or DC bias lines) as compared to bias taps of Josephson transmission lines in the operational RQL circuitry, or Josephson junctions (JJs) with larger or smaller critical currents as compared to JJs in the operational RQL circuitry. Pulse generators with weakened bias taps or larger JJs can have lower limits of their operational ranges placed near an optimal bias point at the centroid of the operating region of the operational RQL circuitry. The bias-level sensors can be staged by relative strength to indicate whether a provided bias value is an improvement when varied over a range.

Abstract: Composite material can include a matrix material, a fiber dispersed in the matrix material, and an ultraviolet (UV)-light sensitive mechanophore grafted to a surface of the fiber. A method for making a fiber-reinforced polymer composite can include contacting a fiber in a first solution, rinsing and then drying intermediate fiber, contacting dried fiber in a third solution, rinsing, and then drying the rinsed fiber thereby generating functionalized fiber that is sensitive to ultraviolet light. The functionalized fiber can be combined with a polymer matrix material, cured, and irradiated, thereby generating a fiber-reinforced polymer composite.

Abstract: A screen structure comprises at least one support element comprising a bistable extendable member; a panel element attached to the at least one support element, wherein the at least one support element and the panel element are configured to be rollable about a first longitudinal axis, to provide for extension and retraction thereof along a direction generally perpendicular to the first longitudinal axis; a handle element for extending and retracting the at least one support element and the panel element upon application of a force to the handle element, wherein when the at least one support element and the panel element are substantially fully retracted, the handle element is arrangeable in one or more first positions and in a parked position; and at least one guide element comprising a curved or angled portion which the handle element is configured to bear against and move relative to, to guide the handle element from the one or more first positions to the parked position.

Abstract: A valve assembly includes a first mixing valve, a second mixing valve, a housing configured to receive the first mixing valve and the second mixing valve, and a check valve. The housing defines a first fluid inlet, a second fluid inlet, a first fluid passage, and a second fluid passage fluidly coupling the second fluid inlet to the first mixing valve and the second mixing valve. The first fluid passage includes a first fluid inlet chamber fluidly coupled to the first fluid inlet, a first connecting passage fluidly coupling the first fluid inlet chamber to the first mixing valve, and a second connecting passage fluidly coupling the first fluid inlet chamber to the second mixing valve. The check valve is coupled to the housing and configured to substantially prevent fluid from flowing from the first mixing valve to the first fluid inlet chamber.