Abstract: A tunable narrow-linewidth photo-generated microwave source based on polarization control includes a high-reflectivity fiber grating, a high-gain fiber, a low-reflectivity polarization-maintaining fiber grating, a stress adjusting device, a single-mode semiconductor pump laser, an optical wavelength division multiplexer, a polarization beam splitter, a polarization controller, an optical coupler, and a photoelectric detector. Birefringence distribution in the low-reflectivity polarization-maintaining fiber grating is controlled by adjusting a stress magnitude of the stress adjusting device to the low-reflectivity polarization fiber grating, thereby controlling a laser frequency working in different polarization modes in a resonant cavity, and a tunable narrow-linewidth photo-generated microwave source is generated by a beat-frequency technology using a dual-wavelength narrow-linewidth laser with variable frequency intervals.

Abstract: Disclosed is an operational inspection system and method for a domain adaptive device.

Abstract: A tissue adhesive membrane and a preparation method thereof are provided. The tissue adhesive membrane includes a supramolecular polymer and an enhancer; the supramolecular polymer is prepared by copolymerization of lipoic acid and a biocompatible stabilizer; and the enhancer includes at least one selected from the group consisting of a cationic compound, a cationic polymer, and a metal particle. The tissue adhesive membrane of the present invention can achieve rapid adhesion, seal wounds continuously and effectively, and maintain long-lasting mechanical strength. The components of the tissue adhesive membrane come from natural components of animals and plants, have good biocompatibility, and possess the functions of antibacterial and inhibiting inflammation. The tissue adhesive membrane of the present invention is a hydrophobic adhesive membrane where hydrogen bonding and high surface energy can provide strong adhesion energy and no adverse active groups that may cause irritation or discomfort are contained.

Abstract: The invention discloses a filtering antenna for wearable devices, which includes a top dielectric substrate, a bottom dielectric substrate, an antenna radiation unit, a top metal ground, a bottom metal ground, and an artificial magnetic conductor structure. The antenna radiation unit is printed on an upper surface of the top dielectric substrate, the top metal ground is printed on a lower surface of the top dielectric substrate, the artificial magnetic conductor structure is etched on an upper surface of the bottom dielectric substrate, and the bottom metal ground is printed on a lower surface of the bottom dielectric substrate. The antenna radiation unit is formed by a circular patch and a microstrip coupling feed stub structure. The invention has the advantages of miniaturization, easy integration, low profile, high gain, anti-interference, may work in the 5.8-GHz ISM frequency band, may be used in wearable devices, has filtering effect etc.

Abstract: The present invention discloses a method for preparing bendable nanopaper-based flexible solar cells by 3D aerogel jet printing. In this method, firstly all-cellulose paper is soaked in ionic liquid, and quickly partially dissolved and regenerated under the condition of hot pressing to produce nanopaper with high transmittance and high haze; and then a 3D aerogel jet printer is used to precisely print the respective layers of a solar cell on the surface of the nanopaper as a flexible substrate material, wherein the solar cell comprises an anode PFN/Ag NWs, an active layer CuPc/C60/PTCBI/BCP and a cathode MoO3/Ag/MoO3, and the thickness of each layer is precisely controlled by setting the parameters of the 3D printer. The electrode grid line on the surface of the prepared paper flexible solar cell has a width less than 10 ?m and a thickness less than 20 nm.

Abstract: Provided are an ultrasonic human body communication method and a device thereof, the method including dividing serial information into blocks, and each information block includes modulation bits and index bits; each transmission frame is divided into multiple groups; performing an index modulation on the groups of each transmission frame, determining activated group sequence numbers; performing a digital modulation on the modulation bits of each information block, and mapping the digitally modulated modulation bits to activated groups; for the multiple information blocks processed in parallel, performing a parallel/serial conversion, a pulse shaping, and an ultrasonic conversion in sequence to obtain a transmission signal, and transmitting the transmission signal in a human body through a transmission frame; on a receiving node, receiving a received transmission signal propagated by the human body, and demodulating the received transmission signal to obtain the index bits and the modulation bits.

Abstract: A hybrid feeding device for automatically adjusting a co-firing amount of decaying garbage. The device comprises a mechanical grate furnace, a hybrid garbage conveying device, a raw garbage feeding device, a decaying garbage feeding device, a hybrid garbage crushing device, and a control center. The raw garbage feeding device, the decaying garbage feeding device, and the hybrid garbage conveying device are all connected to the control center. The decaying garbage feeding device is used for transporting decaying garbage to the raw garbage feeding device. The raw garbage feeding device is positioned between the decaying garbage feeding device and the hybrid garbage conveying device. The hybrid garbage crushing device is used for crushing garbage and inputting the garbage to the mechanical grate furnace. The mechanical grate furnace is internally provided with a plurality of temperature sensors, and the plurality of temperature sensors are connected to the control center.

Abstract: A preparation method of a double-T-shaped gate based on double-layer passivation accurate etching includes: sequentially growing two passivation layers on an epitaxial structure, where the two passivation layers include a bottom passivation layer and a top passivation layer; performing a first exposure on the top passivation layer and etching the top passivation layer and the bottom passivation layer in a first exposure region from top to bottom to form a gate root region; performing a second exposure on the top passivation layer and etching the top passivation layer in a second exposure region to form a lower gate cap region; and performing a third exposure on the top passivation layer to form a top gate cap exposure region and performing metal evaporation and removing a photoresist to form a double-T-shaped gate structure in the two passivation layers.

Abstract: Disclosed is a transparent conductive oxide thin film. The metal oxide is a transparent conductive material of (In2O3)x(MO)y(ReO)z formed by doping a small amount of a rare earth oxide ReO into an indium-containing metal oxide MO—In2O3 as a photon-generated carrier conversion center. According to the present application, in an indium-based metal oxide, a rare earth oxide material is introduced, such that the carrier concentration is controlled, and the mobility is improved; rare earth ions in the rare earth oxide have the lower electronegativity, and an ionic bond Ln-O formed by the rare earth ions and oxygen ions has the higher bond breaking energy, such that the oxygen vacancy concentration in the In2O3 thin film may be effectively controlled. The rare earth ions have the ionic radius equivalent to that of indium ions, defect scattering caused by structure mismatch may be reduced, the high mobility characteristics thereof may be kept better.

Abstract: This disclosure discloses a single-inductor multiple-output DC-DC buck converter, which includes a power conversion unit and i charge controllers, as well as a phase-locked loop, a logic unit, a driving unit, and an input trunk duty ratio generation unit. The charge controllers are connected to the driving unit through the logic unit. The logic unit is further connected to the phase-locked loop and the phase-locked loop is connected to the driving unit through the input trunk duty ratio generation unit. The driving unit is connected to the power conversion unit. The disclosure applies charge control to every output branch path, and adopts a phase-locked loop as the cycle control, which effectively suppresses the cross modulation effect of every branch path, and does not require the last branch path to have a sufficiently heavy load, which broadens the load range, while taking into account other performance requirements concurrently.

Abstract: The present disclosure relates to an LED vehicle lamp with a frustum base plate. The LED vehicle lamp includes a base plate, a circuit board and a plurality of LED chips. The base plate is a frustum base plate. The frustum base plate is arranged on an axis of the LED vehicle lamp. A width of an upper bottom surface of the frustum base plate is smaller than that of a lower bottom surface of the frustum base plate. An axis of the circuit board is parallel to an axis of the frustum base plate. A width of the circuit board is smaller than that of the upper bottom surface of the frustum base plate. The circuit board is installed on the upper bottom surface of the frustum base plate, and the plurality of LED chips are installed on the circuit board.

Abstract: A resilient prestress-free steel structure includes the elastic centering beam and two pin-ended box column bases. The elastic centering beam includes two cantilever segment I-shaped steel beams, a middle segment I-shaped steel beam and buckling restrained high strength steel bars. The cantilever segment I-shaped steel beams are fixed to the two pin-ended box column bases, the middle segment I-shaped steel beam is connected between the two cantilever segment I-shaped steel beams, the buckling restrained high strength steel bars are symmetrically arranged. One end of each of the buckling restrained high strength steel bars is firmly connected with the web of each of the cantilever segment I-shaped steel beams, and the other end of each of the buckling restrained high strength steel bars is firmly connected with the web of the middle segment I-shaped steel beam. The resilient prestress-free steel structure is arranged in left and right symmetrical manner.

Abstract: The present invention discloses an adaptive damping nonlinear spring-variable damping system and a mobile platform system, with the nonlinear spring-variable damping system applied to the mobile platform. The nonlinear spring-variable damping system is characterized in that the system comprises: an oil cylinder accommodating damping oil; a piston, accommodated in the oil cylinder and movable along the oil cylinder to make the damping oil flow; at least one connecting rod, connected to the piston; at least one spring, whose deformation process is constrained by the connecting rod; and a damping adaptive adjustment device, configured to be able to adaptively change the flow resistance of the damping oil according to the vibration of the mobile platform, so as to control the system damping; wherein, when the mobile platform vibrates, the connecting rod and the spring can subject the piston to a nonlinear spring force.

Abstract: Disclosed is a biochemical computer latch based on enzymatic reactions. Input, output and storage signals of the latch are concentrations or activities of substances or enzymes. Bistable characteristics of the latch are implemented by a plurality of enzymatic reactions that interact with each other. When the plurality of enzymatic reactions are catalyzed by each other, a positive feedback regulation of enzyme concentration or activity can be achieved, so that the biochemical computer latch can be stabilized in one of a plurality of states and stores information in the state. The latch can change the state thereof by means of a change in the input signal, so as to modify the stored information, and can also read the stored information by means of the output signal. Compared with traditional semiconductor latches, the disclosed can be more conveniently used in biochemical computers without conversion between an electrical signal and a chemical signal.

Abstract: A glucose sensor electrode, a preparation method therefor and the use thereof are provided for the rapid and sensitive detection of glucose. The method involves: (1) performing an alkali heat treatment to form a nanoneedle-structured titanium dioxide on the surface of a titanium electrode; (2) forming micro-region grooves on a nanoneedle-structured titanium dioxide film layer to obtain a nanoneedle-structured titanium dioxide having a micropattern; (3) depositing a chlorine-doped polypyrrole in the grooves by using chronopotentiometry; (4) forming a nanocone-structured citric-acid-doped polypyrrole on the chlorine-doped polypyrrole by using chronopotentiometry; and (5) grafting an enzyme capable of detecting glucose to obtain the glucose sensor electrode. This simple and stable process is low in cost, efficiently grafts the enzyme capable of detecting glucose on the surface of the electrode, and provides a stable electrode with higher reliability for detecting glucose.

Abstract: Disclosed by the present invention is a multi-hazard accident coupling three-dimensional simulation system for a major oil and gas infrastructure, including an accident three-dimensional simulation module, an accident chain evolution prediction module, a model unit, and a database module. On the basis of an existing Natech accident analysis method, a Natech accident multi-hazard coupling link of a major infrastructure for oil and gas storage and transportation is considered, and all potential accident link possibilities are identified. In daily management, the accident probabilities and accident consequences of various units under multi-hazard coupling are analyzed to provide a basis for reasonable arrangement of safety protection facilities and emergency evacuation drill.

Abstract: A reinforced recycled block/aggregate concrete precast column and a construction method are provided. The reinforced recycled block/aggregate concrete precast column includes several first one-bar hoops, vertical reinforcement bars, several second one-bar hoops, a flexible hinge area, and recycled block/aggregate concrete; the first one-bar hoops and second one-bar hoops are each provided with an anchor end; the first one-bar hoops and second one-bar hoops are disposed in the flexible hinge area, and only the second one-bar hoops are disposed outside the flexible hinge area; the outer edge of each first one-bar hoop is flush with the outer surface of the reinforced recycled block/aggregate concrete precast column; and the interior of the reinforced recycled block/aggregate concrete precast column is filled with the recycled block/aggregate concrete, thereby greatly increasing the recycling rate of engineering waste, reducing shedding of a concrete protective layer in the flexible hinge area of the column.

Abstract: The present application relates to a light pulse signal processing system. A to-be-measured signal light source generates a to-be-measured signal light pulse, and the to-be-measured signal light pulse is transmitted to a cylindrical lens. The to-be-measured signal light pulse is converted into a to-be-measured signal light pulse having a spatial angle chirp by the cylindrical lens, and is outputted and is incident into a pair of long mirrors at different angles. The to-be-measured signal light pulse incident at different incident angles is delayed by the pair of long mirrors. A cluster of to-be-measured signal light pulses with a corresponding repetition rate is outputted to a beam combining mirror, and is combined with a cluster of reference light pulses by the beam combining mirror. A light signal analysis device analyzes the combined cluster of light pulses.

Abstract: The present disclosure relates to a method for controlling thermoplasticity and toughness of a redox-modified plant fiber, comprising following steps: (1) pretreating a plant fiber; (2) obtaining an oxidation-modified plant fiber by adding an oxidant solution, then filtering, and washing; and obtaining the redox-modified plant fiber by adding a reductant solution, then filtering, and washing; and (3) fully mixing a plasticizer with the redox-modified plant fiber; the plasticizer being a hydroxyl plasticizer, an ionic liquid plasticizer, a deep eutectic solvent, an ester plasticizer, an amine plasticizer, a glycidyl plasticizer, or an inorganic salt plasticizer. The method according to the present disclosure can improve the toughness of the redox-modified plant fiber material, reduce the processing temperature of the plant fiber material, and broaden the processing window of the plant fiber material.

Abstract: A rABS/PBT/ASG composite material and a preparation method thereof utilize the characteristics of rABS with carboxyl and hydroxyl groups, wherein rABS are pre-blended with ASG to increase the viscosity, so that the epoxy groups on the ASG molecules react with the hydroxyl groups and the carboxyl groups on the rABS, and the acrylonitrile-styrene segments in ASG and rABS are thermodynamically miscible, followed by reacting and blending with PBT to prepare the rABS/PBT/ASG composite material. ASG acts as a chain extender and solubilizer in the mixture. The mixture prepared in this way have good compatibility, and the tensile strength, impact strength and elongation at break of the composite material are comprehensively improved. The composite material obtained has the advantages of both ABS and PBT materials, which has broad application prospects in the field of ABS plastic recycling.