Abstract: A method of manufacturing a laminate microfluidic device is described herein. Also described is the microfluidic device manufactured via the method of the disclosure, as well as use of the device to perform an assay. The laminate device includes a substrate layer, an adhesive layer having a cured adhesive with one or more channels or recesses formed therein, and a top layer.

Abstract: A method of manufacturing a laminate microfluidic device is described herein. Also described is the microfluidic device manufactured via the method of the disclosure, as well as use of the device to perform an assay. The laminate device includes a substrate layer, an adhesive layer having a cured adhesive with one or more channels or recesses formed therein, and a top layer.

Abstract: A method for preparing a high-performance difficult-to-deform metal precision seamless pipe includes steps of performing a heat treatment; drilling; externally grinding; internally grinding; straightening; performing four-roller warm-rolling; performing warm-drawing to reduce a diameter; performing warm-expansion to reduce a wall thickness and increase the diameter; performing precise cold-rolling; degreasing; brightening; performing surface grinding; cleaning dust; detecting flaws; testing metal structure performance; and sizing and packaging. By cycling the warm-drawing, the warm-expansion, and the precision cold-rolling, key indicators such as product dimensional accuracy, surface quality, material properties, and crystal grain size can be collaboratively controlled, to achieve higher accuracy, better performance, and more outstanding extreme specifications.

Abstract: A method for optimizing a layer-stacking sequence of a composite material pressure vessel. includes determining design variables of a to-be-optimized composite material pressure vessel based on design objectives thereof, the design objectives including a liner size and a working pressure of the composite material pressure vessel, and the design variables including filament winding angles, winding layer thicknesses, and winding layer quantities; establishing a finite element model based on layer-stacking information and boundary conditions of the to-be-optimized composite material pressure vessel, the layer-stacking information being the design variables; modeling the liner of the pressure vessel by solid elements, and modeling composite material layers of the pressure vessel by continuum shell elements.

Abstract: The present disclosure provides a corrugated skew rolling preparation method of a magnesium alloy bar with a gradient structure, adopts a three-roller skew rolling mill, adding a corrugated curve to a flat roll rolling section of the three-roller skew rolling mill to form a corrugated roll, the billet used is as-cast magnesium alloy bar, and steps include: simulated rolling physical experiment; rolling parameters setting; bar homogenization annealing treatment; heating treatment of bars before rolling; three-roller skew mill rolling; cooling of the rolled parts after rolling. Thus improving the preparation efficiency and preparation quality of the magnesium alloy bar with gradient structure. And further improves the formiability of magnesium alloy bar with gradient structure.

Abstract: The present invention discloses a multiband resonance frequency tracking circuit applied to ultrasonic machining, including an output current-voltage phase difference direction detection circuit and a multiband resonance frequency tracking circuit, where a detection signal output end of the output current-voltage phase difference direction detection circuit is connected to a signal input end of the multiband resonance frequency tracking circuit. Through the foregoing technical solutions, in the present invention, a system detuning state is quickly determined by using a current-voltage phase difference direction detection signal outputted by a D flip-flop in a chip SN74HC74D, and a dead-time resistor between a 5th pin and a 7th pin in a chip EG3525 can be changed in a timely manner based on a detuning degree of a piezoelectric transducer, so as to change a system driving frequency to track a resonance frequency of the piezoelectric transducer and implement fast and accurate tracking.

Abstract: A method of manufacturing a laminate microfluidic device is described herein. Also described is the microfluidic device manufactured via the method of the disclosure, as well as use of the device to perform an assay. The laminate device includes a substrate layer, an adhesive layer having a cured adhesive with one or more channels or recesses formed therein, and a top layer.

Abstract: The present application relates to the technical field of fiber winding control, and provides a tension control method of a multi-bundle winding equipment combined driving system, which solves the problem that the tension fluctuates greatly and cannot be output constantly in the fiber winding process.

Abstract: A low-temperature and high-efficiency ammonia decomposition catalyst is disclosed, which includes a support and an active component. The support is SBA-15/G and the active component is nickel. The preparation method of the low-temperature and high-efficiency ammonia decomposition catalyst includes the following steps. Ni(OH)2 is mixed with SBA-15/G composite support by simple mechanical mixing method. Then, Ni/SBA-15/G supported catalyst is prepared by calcination in ammonia atmosphere. The ammonia decomposition activity of prepared materials at low-temperature is higher than that of most current Ni-based catalysts, and the method has the advantages of simple preparation process and low cost, and exhibits high catalytic activity and stability in the ammonia decomposition reaction.

Abstract: The present invention discloses a multiband resonance frequency tracking circuit applied to ultrasonic machining, including an output current-voltage phase difference direction detection circuit and a multiband resonance frequency tracking circuit, where a detection signal output end of the output current-voltage phase difference direction detection circuit is connected to a signal input end of the multiband resonance frequency tracking circuit. Through the foregoing technical solutions, in the present invention, a system detuning state is quickly determined by using a current-voltage phase difference direction detection signal outputted by a D flip-flop in a chip SN74HC74D, and a dead-time resistor between a 5th pin and a 7th pin in a chip EG3525 can be changed in a timely manner based on a detuning degree of a piezoelectric transducer, so as to change a system driving frequency to track a resonance frequency of the piezoelectric transducer and implement fast and accurate tracking.

Abstract: Carbon fiber winding equipment includes integrated spiral and hooping winding equipment for multi-bundle fibers. The equipment includes a spiral winding unit, a hoop winding unit, and a guide base and a supporting base for supporting the spiral winding unit and the hoop winding unit. An end face of a gear driving plate includes a continuous bulbous iris curve sliding rail, a sliding rod extends into the sliding rail and is capable of driving a yarn guide shaft tube to slide radially along with the rotation of the gear driving plate. A bevel gear is capable of driving the yarn guide shaft tube to do auto-rotation motion along with the rotation of a second transmission gear ring. A ratchet driving plate rotates to drive an electric telescopic rod to push a hoop rotation plate to rotate so as to drive a hoop winding bundling device to complete a hoop winding action.

Abstract: The present disclosure provides a high-efficiency filament helical winding device, which includes a frame body and a plurality of multi-filar guides. The frame body is provided with a through-hole, the plurality of multi-filar guides distributed in a circumference along a center of the through-hole are rotationally connected to the frame body and filament is extended out from each multi-filar guide in the plurality of multi-filar guides, and the frame body is provided with a first driving mechanism that drives each multi-filar guide to rotate.

Abstract: An accelerator is disclosed. The accelerator may include a memory that may store a dictionary table. An address generator may be configured to generate an address in the dictionary table based on an encoded value, which may have an encoded width. An output filter may be configured to filter a decoded value from the dictionary table based on the encoded value, the encoded width, and a decoded width of the decoded data. The accelerator may be configured to support at least two different encoded widths.

Abstract: A scene switching method includes: determining whether a user moves from a first scene to a second scene or not; if yes, acquiring voiceprint information of the user in the second scene; determining each device to be switched in the first scene according to the voiceprint information, and obtaining an operation state of the device to be switched; and determining an operation state of each target device in the second scene.

Abstract: The present disclosure provides a high-efficiency filament helical winding device, which includes a frame body and a plurality of multi-filar guides. The frame body is provided with a through-hole, the plurality of multi-filar guides distributed in a circumference along a center of the through-hole are rotationally connected to the frame body and filament is extended out from each multi-filar guide in the plurality of multi-filar guides, and the frame body is provided with a first driving mechanism that drives each multi-filar guide to rotate.

Abstract: The present disclosure provides a high-efficiency filament helical winding device, which includes a frame body and a plurality of multi-filar guides. The frame body is provided with a through-hole, the plurality of multi-filar guides distributed in a circumference along a center of the through-hole are rotationally connected to the frame body and filament is extended out from each multi-filar guide in the plurality of multi-filar guides, and the frame body is provided with a first driving mechanism that drives each multi-filar guide to rotate.

Abstract: The present disclosure provides a high-efficiency filament helical winding device, which includes a frame body and a plurality of multi-filar guides. The frame body is provided with a through-hole, the plurality of multi-filar guides distributed in a circumference along a center of the through-hole are rotationally connected to the frame body and filament is extended out from each multi-filar guide in the plurality of multi-filar guides, and the frame body is provided with a first driving mechanism that drives each multi-filar guide to rotate.

Abstract: A method for producing a polyurethane polymer comprises the steps of: (a) providing a polyol composition, the polyol composition comprising (i) a polyol, (ii) a polyethylenimine compound; and (iii) a bisulfite compound, (b) providing an isocyanate compound; (c) providing a catalyst; (d) combining and reacting the polyol composition, the isocyanate compound, and the catalyst to produce a polyurethane polymer.

Abstract: A method of processing data in a system having a host and a storage node may include performing a shuffle operation on data stored at the storage node, wherein the shuffle operation may include performing a shuffle write operation, and performing a shuffle read operation, wherein at least a portion of the shuffle operation is performed by an accelerator at the storage node. A method for partitioning data may include sampling, at a device, data from one or more partitions based on a number of samples, transferring the sampled data from the device to a host, determining, at the host, one or more splitters based on the sampled data, communicating the one or more splitters from the host to the device, and partitioning, at the device, data for the one or more partitions based on the one or more splitters.