Abstract: The present application discloses an oxide semiconductor thin-film and a thin-film transistor consisted thereof. The oxide semiconductor thin-film is fabricated by doping a certain amount of rare-earth oxide (RO) as light stabilizer to metal oxide (MO) semiconductor. The thin-film transistor comprising a gate electrode, a channel layer consisted by the oxide semiconductor thin-film, a source and drain electrode; the thin-film transistor employing etch-stop structure, a back-channel etch structure or a top-gate self-alignment structure.

Abstract: The disclosure relates to a protein-type nanoparticle for multi-specific antibody delivery, a preparation method, and its application. The protein-type nanoparticle includes a polyester and a protein with a hydrophobic domain, and the hydrophobic domain of the protein is bound with the polyester through hydrophobic interactions. The protein is at least one of albumin, globulin and cell wall protein. The protein-type nanoparticle of the present disclosure has excellent stability and biocompatibility. The protein-type nanoparticle is used to prepare a multi-specific antibody delivery platform (?Fc-NP) by binding anti-IgG-Fc antibody or anti-IgG-Fc antibody fragment, which can stably, quickly and easily bind to multiple specific antibodies through antigen-antibody interaction and enhance the therapeutic effect of specific antibodies.

Abstract: Disclosed are to a pixel circuit, a method for driving the pixel circuit and a display panel. The pixel circuit includes a data write module, a storage module, a drive module and a light emitting device. The drive module includes a first control terminal and a second control terminal. The data write module is configured to write, at a data write stage, a data signal into the first control terminal of the drive module, the storage module is configured to maintain a potential of the first control terminal, the second control terminal is electrically connected to a pulse-width modulation (PWM) signal input terminal of the pixel circuit, and is configured to control the drive module to provide discontinuous drive current according to a PWM signal from the PWM signal input terminal at a light emission stage, and the light emitting device emits light in response to the discontinuous drive current.

Abstract: A dual-band filtering switch based on a single quad-mode dielectric resonator (DR) includes: a first printed circuit board (PCB) provided thereon with an input terminal; a second PCB provided thereon with an output terminal; a shielding shell arranged between the first and second PCBs and enclosing a shielding cavity together with the first and second PCBs; and a single quad-mode DR arranged in the shielding cavity. The first and second PCBs each include a feeding layer, a dielectric layer, and a ground layer that are stacked in sequence. The feeding layers of the first and second PCBs each include a microstrip line and a switching circuitry connected to the microstrip line, and the feeding layer is in contact with a surface of the DR to realize a switching function of the filtering switch. The proposed filtering switch feature low loss transmission and high selectivity with dual-band operation, miniaturization with the fewest resonators and friendly-integration, simultaneously.

Abstract: A method for manufacturing thin-specification high-Ti wear-resistant steel NM450 comprises the steps of preparing melted iron in a blast-furnace, preprocessing the melted iron, smelting the melted iron in a converter, refining the melted steel in a LF furnace, refining the melted steel in a RH furnace, conventional slab continuous casting, heating the slab in a heating furnace, dephosphorizing the slab by high-pressure water, heating the slab in a hot continuous rolling mill, performing ultra fast cooling, reeling, flattening, heating, quenching, tempering and finishing.

Abstract: A multistable compliant mechanism is formed by connecting sequentially multiple basic units front to end to form a closed annular structure. Each basic unit includes two flexible hinges perpendicular to each other on different planes and two rigid connection parts for connecting the flexible hinges. The two flexible hinges are connected by a rigid connection part, and one of the flexible hinges is connected to a flexible hinge of an adjacent basic unit through the other rigid connection part. Lengths of two rigid connection parts in a same basic unit are equal, but lengths of rigid connection parts of different basic units are not necessarily equal. The multistable compliant mechanism features the continuous rotation and multi-steady state of a tri-compliant mechanism. The multistable compliant mechanism also features variable mechanism topology, an adjustable unit number, easy implementation, and promotion. A method for steady state analysis of the multistable compliant mechanism is also provided.

Abstract: A microwave ablation antenna based on a spiral slot, including a conical ablation needle head and a semi-rigid coaxial needle rod. A front end of the semi-rigid coaxial needle rod is interconnected with a tail end of the ablation needle head. An outer conductor behind a connection is provided with a plurality of optimizable spiral slots for radiation, and a plurality of annular slots are not formed or formed behind the spiral slots for impedance matching and radiation. Energy is transmitted along a semi-rigid co-axis and is efficiently radiated at the slots.

Abstract: The invention discloses a catalyst for removing volatile organic compounds and a preparation method therefor. In the catalyst, aluminum oxide modified by iron, cobalt and nickel is used as a carrier, cordierite honeycomb ceramic is used as a matrix, and an extremely low content of a mixture of platinum and palladium is used as an active component; a molar ratio of platinum to palladium is 0-1:0-9, and an amount of the mixture of platinum and palladium accounts for 0.01% to 0.05% of a mass of the matrix; and an amount of the carrier accounts for 3% to 5% of the mass of the matrix.

Abstract: A frequency locking method for a phase-locked loop comprises the following steps: S1, a frequency control module controls a numerically controlled oscillator to obtain an maximum output frequency and a minimum output frequency; S2, obtain a minimum frequency ratio and a maximum frequency ratio by means of a time-to-digital converter and the frequency control module; S3, calculate a first frequency control word and a first frequency ratio according to the minimum frequency ratio and the maximum frequency ratio; S4, the frequency control module uses the Newton's iterative method to recalculate a new frequency control word; S5, obtain a new frequency ratio according to the new frequency control word; S6, if the new frequency ratio is within an error range, end iteration and stably output the new frequency control word, and otherwise, jump to step S4.

Abstract: A multi-task feature sharing neural network-based intelligent fault diagnosis method has the following steps: (1) separately collecting original vibration acceleration signals of rotating machinery under different experimental conditions, forming samples by means of intercepting signal data having a certain length, and performing labeling; (2) constructing a multi-task feature sharing neural network, having: an input layer, a feature extractor, a classification model and a prediction model; (3) using multi-task joint training to simultaneously train the classification model and the prediction model; and (4) inputting a vibration acceleration signal collected in an actual industrial environment into the trained models to obtain a multi-task diagnosis result.

Abstract: The present invention discloses a high-boron cast steel material resisting high-temperature molten aluminum corrosion-abrasion and a preparation method thereof. The material includes the following compositions (wt.%): C: 0.1 to 1, B: 1.0 to 6.5, Cr: 7.5 to 25, Mo: 0.5 to 12.5, Si: 0.5 to 3.5, Al: 0.5 to 8.5, Mn: 0.2 to 1.2, S: less than 0.05, P: less than 0.05, and a balance of Fe. The method includes the following steps: annealing an obtained casting, and conducting quenching and tempering treatment to obtain the material.

Abstract: An epitaxial structure of a GaN-based radio frequency device based on a Si substrate and a manufacturing method thereof are provided. The epitaxial structure is composed of a Si substrate (1), an AlN nucleation layer (2), AlGaN buffer layers (3, 4, 5), a GaN:Fe/GaN high-resistance layer (6), a GaN superlattice layer (7), a GaN channel layer (8), an AlGaN barrier layer (9) and a GaN cap layer (10) which are stacked in turn from bottom to top, wherein the GaN:Fe/GaN high-resistance layer (6) is composed of an intentional Fe-doped GaN layer and an unintentional doped GaN layer which are alternately connected; the GaN superlattice layer (7) is composed of a low-pressure/low V/III ratio GaN layer and a high-pressure/high V/III ratio GaN layer which are periodically and alternately connected.

Abstract: A dual-band filtering switch based on a single quad-mode dielectric resonator (DR) includes: a first printed circuit board (PCB) provided thereon with an input terminal; a second PCB provided thereon with an output terminal; a shielding shell arranged between the first and second PCBs and enclosing a shielding cavity together with the first and second PCBs; and a single quad-mode DR arranged in the shielding cavity. The first and second PCBs each include a feeding layer, a dielectric layer, and a ground layer that are stacked in sequence. The feeding layers of the first and second PCBs each include a microstrip line and a switching circuitry connected to the microstrip line, and the feeding layer is in contact with a surface of the DR to realize a switching function of the filtering switch. The proposed filtering switch feature low loss transmission and high selectivity with dual-band operation, miniaturization with the fewest resonators and friendly-integration, simultaneously.

Abstract: The present disclosure provides a pH-sensitive membranolytic polymer material and a preparation method and application thereof. The pH-sensitive membranolytic polymer material has the structure shown in Formula (I). At normal physiological pH, the polymer material is hydrophobic neutral, and can be self-assembled into PEG coated nanoparticles with weak interaction with cell membrane; when the pH decreases, the polymer material can be protonated to form an amphiphilic structure consisting of hydrophobic domain and cationic domain, which has strong interaction with the cell membrane and strong membranolytic activity, so the polymer material can kill tumor cells or bacteria efficiently and selectively.

Abstract: Disclosed is an operational amplifier based on a metal-oxide TFT. The operational amplifier includes an auxiliary amplifier and a bootstrap gain-increasing amplifier. The auxiliary amplifier adopts a two-stage positive feedback structure, including a fifth transistor, a seventh transistor, an eleventh transistor, a first amplifying unit, and a second amplifying unit. A gate of the fifth transistor serves as an input end of the operational amplifier. The bootstrap gain-increasing amplifier includes two second circuits in mutual symmetry. Each of the second circuits includes a first transistor, a second transistor, and a current source unit with a bootstrap structure.

Abstract: An InN nanorod epitaxial wafer grown on an aluminum foil substrate (1) sequentially comprises the aluminum foil substrate (1), an amorphous aluminum oxide layer (2), an AlN layer (3) and an InN nanorod layer, (4) from bottom to top. The wafer can be prepared by pretreating the aluminum foil substrate with an oxidized surface and carrying out an in-situ annealing treatment; then, in a molecular beam epitaxial growth process, forming AlN nucleation sites on the annealed aluminum foil substrate, nucleating on the AlN and growing InN nanorods on the AlN, where the substrate temperature is 400-700° C., the pressure of a reaction chamber is 4.0-10.0×10?5 Torr and the beam ratio of V/III is 20-40.

Abstract: The present disclosure discloses a method of multi-access edge computing task offloading based on D2D in IoV environment, which models a task offloading strategy, a transmission power and a channel resource allocation mode as a mixed integer nonlinear programming problem, wherein an optimization problem is to maximize the sum of time delay and energy consumption benefits of all CUE in cellular communication with a base station in the IoV system. This method has low time complexity, may effectively utilize channel resources of the IoV system, and ensures the delay reliability of the DUE for which the local V2V data exchange is performed in the form of D2D communication. In the meantime, the time delay and energy consumption of CUE are both close to the minimum, thus meeting the IoV requirements of low time delay and high reliability.

Abstract: An outer finned tube includes a tube body, an outer wall of the tube body is provided with outer fins spirally arranged in an extension direction of the tube body; grid fins are arranged between two adjacent spiral parts of the outer fins correspondingly; two ends of each grid fin are connected to the two adjacent spiral parts of the corresponding outer fin respectively; a gap is kept between each grid fin and the outer wall of the tube body; and the plurality of grid fins are spaced in the extension direction of the tube body. An enhancing cavity is formed in an area defined by the outer wall of the tube body, inner walls of the grid fins and the outer fins in an encircling way, which can form a larger degree of superheat, provides a nucleation point for a boiling/condensation process and improves a heat exchange performance.

Abstract: A water-soluble conjugated polymer for photothermal therapy, a polymerized monomer thereof, a preparation method therefor, and application thereof. The water-soluble conjugated polymer has good solubility in an aqueous solution, has excellent biocompatibility, does not need to be subjected to coating treatment, can be directly used for photothermal therapy, is easy to use, has a nanometer size, and can enter cells easily. Polar groups are contained in side chains, and the water-soluble conjugated polymer is capable of targeting, can locate intracellular organelles, has excellent photostability and chemical properties as well as high photothermal conversion efficiency, can achieve photothermal therapy of near-infrared region I or II, with high treatment efficiency and few side effects. In the preparation method for the water-soluble conjugated polymer, raw materials can be easily obtained, synthesis conditions are mild, and the purification is convenient.

Abstract: Disclosed are to a pixel circuit, a method for driving the pixel circuit and a display panel. The pixel circuit includes a data write module, a storage module, a drive module and a light emitting device. The drive module includes a first control terminal and a second control terminal. The data write module is configured to write, at a data write stage, a data signal into the first control terminal of the drive module, the storage module is configured to maintain a potential of the first control terminal, the second control terminal is electrically connected to a pulse-width modulation (PWM) signal input terminal of the pixel circuit, and is configured to control the drive module to provide discontinuous drive current according to a PWM signal from the PWM signal input terminal at a light emission stage, and the light emitting device emits light in response to the discontinuous drive current.