Abstract: A reconfigurable optical frequency selective structure having embedded therein: (a) an array of optical antennas for picking up propagating radiation in a visible or infrared frequency region and achieving preferential absorption of electromagnetic energy at a target wavelength k within the region, (b) an array of optical mesa structures of sub-wavelength scale including a phase-change material, the array of optical antennas being disposed atop the array of optical mesa structures respectively; (c) a metal ground plane disposed beneath the array of optical mesa structures, the array of optical mesa structures standing above the ground plane or an interfacial layer and being separated from one another to inhibit parasitic capacitance coupling therebetween; and (d) a plurality of heaters for selectively heating any one of the array of optical mesa structures to cause the phase change material in the selected optical mesa structure to change from an amorphous state, wherein the antenna atop the selected mesa

Abstract: In some examples, a heat exchanger includes a first flow channel having a first flow channel inlet and a first flow channel outlet. The heat exchanger also includes a second flow channel having a second flow channel inlet and a second flow channel outlet. A fin may separate the first flow channel from the second flow channel. The fin may define at least one aperture configured to allow fluid to flow between the first flow channel and the second flow channel if one of the first flow channel inlet or second flow channel inlet becomes constricted through a buildup of foreign object debris.

Abstract: Disclosed herein include systems, methods, compositions, and kits for determining the expression of highly expressed proteins and lowly expressed proteins. In some embodiments, primers allowing generation of separate libraries for abundant AbSeq protein profiling oligonucleotides and scarce AbSeq protein profiling oligonucleotides are provided.

Abstract: Disclosed herein include systems, methods, compositions, and kits for determining the expression of highly expressed proteins and lowly expressed proteins. In some embodiments, primers allowing generation of separate libraries for abundant AbSeq protein profiling oligonucleotides and scarce AbSeq protein profiling oligonucleotides are provided.

Abstract: A heat exchanger includes a plurality of interconnected separator members that respectively include a first surface and an opposite second surface. The separator members respectively include an array of wave features. Also, the separator members are stacked and disposed in an alternating arrangement with the first surfaces of adjacent separator members facing each other and attached at the respective wave features, and with the second surfaces of adjacent separator members facing each other and attached at the respective wave features. The heat exchanger also includes a plurality of first flow passages for first fluid flow and second flow passages for second fluid flow. The second fluid and the first fluid are configured to exchange heat through the separator members.

Abstract: Disclosed herein include systems, methods, compositions, and kits for determining the expression of highly expressed proteins and lowly expressed proteins. In some embodiments, primers allowing generation of separate libraries for abundant AbSeq protein profiling oligonucleotides and scarce AbSeq protein profiling oligonucleotides are provided.

Abstract: Disclosed herein include systems, methods, compositions, and kits suitable for the use of dextramers in single cell analysis. In some embodiments, one or more primers allowing generation of separate libraries for proteins (e.g., antibodies) and for dextramers are used.

Abstract: A heat exchanger includes a separator member that divides a first flow passage from a second flow passage. The heat exchanger also includes a plurality of first hollow members that extend across the first flow passage at respective non-orthogonal angles. The plurality of first hollow members are fluidly connected to the second flow passage. Moreover, the heat exchanger includes a plurality of second hollow members that extend across the second flow passage at respective non-orthogonal angles. The plurality of second hollow members are fluidly connected to the first flow passage.

Abstract: A heat exchanger includes a plurality of interconnected separator members that respectively include a first surface and an opposite second surface. The separator members respectively include an array of wave features. Also, the separator members are stacked and disposed in an alternating arrangement with the first surfaces of adjacent separator members facing each other and attached at the respective wave features, and with the second surfaces of adjacent separator members facing each other and attached at the respective wave features. The heat exchanger also includes a plurality of first flow passages for first fluid flow and second flow passages for second fluid flow. The second fluid and the first fluid are configured to exchange heat through the separator members.

Abstract: A heat exchanger includes a plurality of interconnected separator members that respectively include a first surface and an opposite second surface. The separator members respectively include an array of wave features. Also, the separator members are stacked and disposed in an alternating arrangement with the first surfaces of adjacent separator members facing each other and attached at the respective wave features, and with the second surfaces of adjacent separator members facing each other and attached at the respective wave features. The heat exchanger also includes a plurality of first flow passages for first fluid flow and second flow passages for second fluid flow. The second fluid and the first fluid are configured to exchange heat through the separator members.

Abstract: A heat exchanger includes a separator member that divides a first flow passage from a second flow passage. The heat exchanger also includes a plurality of first hollow members that extend across the first flow passage at respective non-orthogonal angles. The plurality of first hollow members are fluidly connected to the second flow passage. Moreover, the heat exchanger includes a plurality of second hollow members that extend across the second flow passage at respective non-orthogonal angles. The plurality of second hollow members are fluidly connected to the first flow passage.

Abstract: A core to receive an air flow having foreign object debris (FOD) has an inlet plane at which the air flow can enter the core, a fin element having a fin configuration, and a first protective component. The first protective component is constructed of a material and has a first protective configuration sufficient to repel FOD.

Abstract: A core to receive an air flow having foreign object debris (FOD) has an inlet plane at which the air flow can enter the core, a fin element having a fin configuration, and a first protective component. The first protective component is constructed of a material and has a first protective configuration sufficient to repel FOD.

Abstract: A heat exchanger includes a separator member that divides a first flow passage from a second flow passage. The heat exchanger also includes a plurality of first hollow members that extend across the first flow passage at respective non-orthogonal angles. The plurality of first hollow members are fluidly connected to the second flow passage. Moreover, the heat exchanger includes a plurality of second hollow members that extend across the second flow passage at respective non-orthogonal angles. The plurality of second hollow members are fluidly connected to the first flow passage.

Abstract: A heat exchanger includes a separator member that divides a first flow passage from a second flow passage. The heat exchanger also includes a plurality of first hollow members that extend across the first flow passage at respective non-orthogonal angles. The plurality of first hollow members are fluidly connected to the second flow passage. Moreover, the heat exchanger includes a plurality of second hollow members that extend across the second flow passage at respective non-orthogonal angles. The plurality of second hollow members are fluidly connected to the first flow passage.

Abstract: A heat exchanger includes a plurality of interconnected separator members that respectively include a first surface and an opposite second surface. The separator members respectively include an array of wave features. Also, the separator members are stacked and disposed in an alternating arrangement with the first surfaces of adjacent separator members facing each other and attached at the respective wave features, and with the second surfaces of adjacent separator members facing each other and attached at the respective wave features. The heat exchanger also includes a plurality of first flow passages for first fluid flow and second flow passages for second fluid flow. The second fluid and the first fluid are configured to exchange heat through the separator members.

Abstract: A heat exchanger includes a hot passage; a cold passage adjacent the hot passage; a pair of tube sheets, with one tube sheet on each opposing side of one of the hot passage and the cold passage; a fin in one of the hot passage and the cold passage; wherein the fin includes a first distal portion, a second distal portion, and an intermediate portion between the first and second distal portions; wherein the fin is configured to provide, at only the first distal portion and the second distal portion, improved flexibility in three degrees of freedom of movement within one of the hot passage and the cold passage.

Abstract: A heat exchanger comprises: a first medium inlet operable to receive a first medium into the heat exchanger; a first medium outlet operable to expel the first medium from the heat exchanger; a second medium inlet operable to receive a second medium into the heat exchanger; a second medium outlet operable to expel the second medium from the heat exchanger; and a plurality of parallel tubes running from the second medium inlet to the second medium outlet operable to carry the second medium from the second medium inlet to the second medium outlet, the plurality of tubes including: a first section of a first plurality of tubes, at least one of the first plurality of tubes having a first diameter, situated so that the first medium first flows from the first medium inlet over exterior walls of the first plurality of tubes and through gaps between the first plurality of tubes; and a second section of a second plurality of tubes, at least one of the second plurality of tubes having a second diameter that is different

Abstract: An environmental control system (ECS) for an aircraft may be employed to regulate temperature of air entering a cabin of the aircraft. During conditioning of the air, condensate may form in the air. A multiple-stage condensate extraction unit may be incorporated into the ECS to remove the condensate. The extraction unit may be provided with two fluid collection stages built into a cylindrical duct. The duct may have a bend therein. One of the collection stages may be positioned on an upstream side of the bend while the second one of the stages may be positioned on a downstream side thereof. The combination of the two stages and their positioning on either side of the bend may provide a particularly compact and efficient condensate extraction unit.

Abstract: A clip on welder includes two pairs of opposed grippers defined by pivotally attached upper and lower frames for latching the welder to heat weldable material, such as a length of tubing, upon actuation of a start button by an operator; thereafter, the welder operates unattended. At least a jaw of a pair of jaws disposed intermediate the two pairs of grippers heats the material compressed and lodged therebetween to form a weld in or across the material. A source of gas, such as air, under pressure selectively connected to a bellows provides the power to pivot the upper and lower frames into gripping engagement with the material. A source of electrical signals provides the power to heat the material intermediate the pair of jaws. One or more thermocouples senses the heat of the jaws and generates signals used to control the application of power and to control cooling. After completion of the weld, cooling air is directed to the jaws until the thermocouple(s) signal(s) indicates a sufficiently low temperature.