22results about How to "Guaranteed Features" patented technology

The utility model discloses a miniaturized double-frequency wide-beam terminal antenna, which relates to the technical field of mobile terminal antennas and comprises an antenna cap, an antenna housing, a radiator assembly, a feed network module, a radio frequency connector and an antenna base, and the radiator assembly, the feed network module and the radio frequency connector are sequentially distributed inside the antenna housing from top to bottom. According to the miniaturized double-frequency wide-beam terminal antenna, the radiation copper strip is arranged in a gradually-changed spiral form, and when the radiation copper strip is at the same rising angle, the spiral arm with the top open circuit structure has a wider beam width than the spiral arm with the short circuit structure, so that low-elevation electromagnetic signal radiation and reception of the satellite antenna are facilitated; the radiation copper strip is provided with four feeding points, each feeding point is connected with two oscillator arms with different lengths, the circular polarization characteristic and the double-frequency radiation characteristic of the antenna are guaranteed, the two oscillator arms with the same feeding guarantee different rising angles and widths, the isolation degree of double-frequency radiation is improved, the shape of a directional diagram is more regular, and higher radiation gain is achieved.

This invention discloses an APLN monoclonal antibody, its preparation method, and its applications. The APLN monoclonal antibody includes a light chain variable region and a heavy chain variable region. The amino acid sequence of the light chain variable region is shown in SEQ ID No:1, and the amino acid sequence of the heavy chain variable region is shown in SEQ ID No:2. The APLN monoclonal antibody is obtained by immunizing mice with APLN protein, followed by single-cell B-cell sorting and single-cell PCR. Utilizing advanced single-cell B-cell cloning technology combined with single-cell PCR, a novel APLN monoclonal antibody has been developed. The obtained antibody sequence is the result of natural affinity maturation screening by the in vivo immune system, requiring no additional humanization or in vitro affinity maturation steps. It retains the natural high affinity and specificity, and can directly obtain all-natural antibodies with high affinity and high specificity.

The invention discloses a floating foot structure for floating sleep-aiding equipment. The problems that existing equipment is insufficient in buoyancy, large in resistance, high in noise and inflexible in state switching are solved. The floating foot structure comprises a buoyancy tank, a floating foot body sleeved in the buoyancy tank, a guide mechanism between the buoyancy tank and the floating foot body, and a liquid adjusting adaptive part in the floating foot body; the floating foot body is in a big-end-down outline, and both buoyancy and sinking and floating sensitivity are considered. The guide mechanism is arranged to be a plurality of balls, a columnar rod or an anti-collision assembly, so that resistance is reduced and collision is prevented; the liquid adjusting adaptation part is matched with the external assembly to adjust the total mass of the floating foot body, and smooth floating / landing switching of the floating foot body is achieved. The invention further provides equipment applying the structure, and the equipment can be provided with a driving module and a balancing module to optimize the using effect. The structure is matched with a sleeping-aiding bed baby sleeping basket and the like, light, high in strength, capable of being optimized in a scene mode, low in noise, capable of saving energy, stable in movement and outstanding in practicability.

The invention belongs to the technical field of polymer composite materials and functional electrolyte materials, and relates to an interface covalently constructed MOF composite electrolyte film, and a preparation method and application thereof. The method comprises the following steps: preparing a polymer matrix formed by polymerizing imidazole zwitterionic monomers and a metal organic framework material; the preparation method comprises the following steps: sequentially adding a polymer matrix formed by polymerizing imidazole zwitterionic monomers, a metal organic framework material, an ionic liquid and a photoinitiator into a methanol solvent to obtain a precursor suspension; initiating free radical polymerization reaction of acrylate double bonds by the precursor suspension in a photo-initiation or thermal initiation mode to form an initial three-dimensional cross-linked network; and heating the initial three-dimensional cross-linked network to volatilize the methanol solvent, and cooling to room temperature to obtain the interface covalently constructed MOF composite electrolyte film. Through covalent bonding interface engineering design, the problems of poor dispersibility and weak interface bonding of MOF in a polymer matrix are solved. The obtained film has excellent mechanical properties and ionic conductivity.

This invention relates to a Cr and Br dual-element doped polyanionic sodium-ion battery cathode material, sodium iron phosphate pyrophosphate, its preparation method, and its application, belonging to the field of sodium-ion battery technology. The general chemical formula of the cathode material of this invention is: Na₄Fe₂O₃. 3‑x Cr x (PO4)2P2O7Br y Where 0 < x < 0.5, 0 < y < 0.7; the precursor wet gel is obtained through a sol-gel process, dried, and then sintered. This invention relates to a Cr- and Br-doped polyanionic sodium-ion battery cathode material, sodium iron phosphate pyrophosphate. The Cr dopant enhances bulk stability, while the gradient distribution of Br forms a fast ion conduction layer on the surface. The two elements together improve the rate capability and cycle performance of the sodium-ion battery. This provides a modification strategy of significant reference value for cathode materials that suffer from low discharge specific capacity and poor cycle performance at high rates due to electron conductance differences.

The invention belongs to the technical field of power systems, and particularly discloses a singular perturbation-reactive decoupling-based order reduction method and device for a network construction type converter. According to the invention, the original state space model is converted; on the basis of a singular perturbation strategy, order reduction processing is carried out according to target variable characteristics; order reduction processing is carried out on a voltage dynamic equation in a reactive power control outer ring, reactive power decoupling is carried out in the mode that a voltage state variable is introduced into an active power control state equation, and a differential equation based on the phase angle relation is established. Through the above mode, aiming at the electromagnetic dynamic process of the fast subsystem, order reduction processing is carried out on the electromagnetic dynamic state variable based on the singular perturbation strategy, order reduction processing is carried out on the voltage dynamic equation in the reactive power control outer loop, high-order dynamic items are eliminated, main dynamic characteristics in the state space are reserved, the model order and the solving complexity are obviously reduced, and the reliability of the system is improved. Therefore, the model order can be systematically reduced on the premise of ensuring key dynamic characteristics and stability analysis precision.

This invention discloses a bivalent anti-Vibrio parahaemolyticus nanobody, its preparation method, a self-sandwich ELISA kit, and a detection method. The aim is to provide a bivalent anti-Vibrio parahaemolyticus nanobody, kit, and detection method with high accuracy, specificity, and sensitivity for detecting Vibrio parahaemolyticus. The amino acid sequence of the bivalent anti-Vibrio parahaemolyticus nanobody is shown in SEQ ID NO.7. This invention belongs to the field of biodetection technology.

The invention relates to a multi-target detection method, which comprises the following steps of: based on multidirectional anisotropic filtering, effectively decoupling track main body texture and environmental background noise, and remarkably improving the feature expression capability and the signal-to-noise ratio in a low-contrast and complex texture environment; the fracture area of the track caused under the severe working conditions of partial shielding, light reflection and the like is positioned and repaired, and the connectivity and integrity of the output track on the topological level are guaranteed; by constructing a feasible region mask surrounding an orbit, spatial semantic ambiguity caused by a monocular vision perspective effect is eliminated, it is ensured that foreign matter alarm is strictly limited in a physical dangerous region, and the false alarm rate is greatly reduced. Through simultaneous extraction of the railway track topological structure and troubleshooting of the foreign matter risk in the track area, the detection precision under the complex working condition is significantly improved.

This invention provides a Cr2Se3 single crystal and its preparation method, relating to the field of crystal materials technology. The Cr2Se3 single crystal preparation method, from raw material proportioning and powder preparation to single crystal growth, involves coordinated steps to suppress impurity introduction and impurity phase formation, while simultaneously promoting ordered atomic arrangement and eliminating lattice vacancies and dislocations, resulting in a Cr2Se3 single crystal with good single-phase properties, high crystallinity, and extremely low defect density. The high-purity, low-defect single crystal structure ensures its semiconductor transport properties and antiferromagnetic order; it also eliminates interference from impurity scattering and lattice distortion, optimizing the magnetic field's control over the magnetic moments of Cr atoms, enabling the single crystal to exhibit a strong CMR effect approaching -100%. Furthermore, the coordinated steps ensure consistency in size, phase composition, and structural integrity of the prepared Cr2Se3 single crystal, significantly improving the success rate, process controllability, and repeatability.

This invention relates to a negative electrode sheet, its preparation method, and a battery. The negative electrode sheet includes a current collector and an active material layer disposed on at least one surface of the current collector. A coating is disposed on the surface of the active material layer away from the current collector. The coating material includes modified lithium titanate. In this invention, a coating containing modified lithium titanate is disposed on the surface of the active material, which can effectively improve the safety of the battery cell during overcharging. The modified lithium titanate coating not only improves the chemical stability of the negative electrode interface and reduces internal heat generation during overcharging, but also effectively suppresses the excessive lithium plating caused by overcharging by the structural stability of the modified lithium titanate coating, thereby inhibiting lithium dendrite growth and greatly reducing short circuits caused by microperforations in the separator.

The application relates to the technical field of agricultural product detection, and discloses a detection method for maneb-zinc residues in vegetables, which comprises the following steps: extract solution preparation, sample pretreatment, chelation and extraction, salting-out and purification, concentration and redissolution, and detection analysis; in the pretreatment stage, a dimethyl sulfate acetonitrile solution with a specific concentration is used as an extraction solution, and under the synergistic action of a first salt bag containing L-cysteine hydrochloride and a second salt bag containing ethylenediaminetetraacetic acid disodium salt, the sample is extracted through vortex oscillation; the operation combines the derivatization of the target and the solvent extraction process, improves the efficiency and completeness of the derivatization reaction, reduces the decomposition and loss risk of the target in the complex pretreatment process, solves the problems of incomplete derivatization and instability of the target in the traditional method, and lays a reliable foundation for subsequent quantitative analysis.

The application relates to the technical field of software development, in particular to a development man-hour estimation method and system based on a function dependency graph. The method comprises the following steps: constructing a requirement function dependency graph, wherein a node represents a function module, a directed edge represents a dependency relationship between the function modules, and each directed edge carries a dependency coefficient; in response to a received change application of a development project, determining a node set of a direct change node corresponding to a function module that has changed; performing influence propagation traversal based on topological sorting on the requirement function dependency graph, automatically inferring all indirectly affected nodes according to the dependency coefficient, and combining the directly changed node set and the indirectly affected nodes to form an affected node set; and calculating the differential man-hour of each node in the affected node set. The development man-hour estimation method based on the function dependency graph can automatically, comprehensively and objectively estimate the man-hour in the development process.

The present application belongs to the field of data acquisition, and relates to a gearbox gear detection equipment detection data acquisition method and system. The method comprises the following steps: collecting gearbox vibration and synchronous speed signals, dividing the vibration signals into frames, and performing noise reduction processing on each frame; estimating the composite noise spectrum based on the synchronous speed signal and harmonic analysis, combining the time-frequency kurtosis to adaptively select a multi-window function to calculate the noisy power spectrum, using the transient characteristics and prior signal-to-noise ratio to determine the nonlinear subtraction factor, performing spectral subtraction to obtain the target power spectrum, comparing the deviation of the actual meshing frequency and the theoretical value to dynamically determine whether to reconstruct the phase spectrum; and reconstructing all processed data frames by overlapping addition to obtain the detection signal. The present application can comprehensively suppress harmonic and random noise, and conditionally reconstruct key phase information, thereby improving the recognition degree and diagnostic accuracy of early weak fault features of the gearbox.

The invention belongs to the field of polylactic acid materials and preparation thereof, and particularly relates to a polylactic acid material with stereocomplex crystallization capacity and a preparation method of the polylactic acid material. The invention provides a preparation method of a polylactic acid material with stereocomplex crystallization capacity. The preparation method comprises the following steps: respectively initiating L-lactide and D-lactide to perform ring opening polymerization by using a functional initiator to prepare L-polylactic acid (PLLA) and D-polylactic acid (PDLA) with main chains containing amide groups; and preparing the polylactic acid material from the PLLA and the PDLA by adopting a solution blending method. In the structural formula of the functional initiator, n is an integer between 0 and 10, and m is an integer between 2 and 12. According to the invention, amide groups are introduced into main chains of PLLA and PDLA, and the interaction among chiral polylactic acid molecular chains is enhanced under the assistance of hydrogen-bond interaction formed among the amide groups, so that the stereocomplex crystallization of a high-molecular-weight polylactic acid material is effectively promoted.

This invention relates to the field of fluorescence sensing materials technology, specifically to a biporous cationic covalent organic framework material, its preparation method, a ratiometric fluorescent probe, and its applications. The unit cell parameters of the biporous cationic covalent organic framework material are: a = 72.3305 Å, b = 72.3305 Å, c = 3.7877 Å, α = β = 90.000°, γ = 120.000°; its structure is shown in Formula I. This invention utilizes the strong electrostatic interaction between the nanoscale pore wall ion sites of the biporous cationic covalent organic framework material and the charged groups of fluoroquinolone antibiotics, combined with a spatial matching effect, to achieve highly selective recognition of FQs.

The present application relates to the technical field of poultry breeding, and specifically provides a family composition method based on an improved Hungarian algorithm, aiming to solve the technical problems of the prior art that the hen grouping method in poultry breeding has simple logic and low efficiency. To this end, the present application comprises the following steps: S1: defining listA, listB, and a relationship value relationAB; S2: initializing the array listA, the array listB, and the relationship value relationAB; S3: for each male living body in listA, constructing a used list, and initializing the values in the used list to False; S4: starting from the first male living body in listA, traversing the female living bodies in listB to perform first grouping; S5: if the first grouping is successful, performing the first grouping on the next male living body, and if the first grouping is not successful, performing second grouping; S6: repeating S4-S5 until all male living bodies in listA are successfully grouped; and S7: constructing a grouping list matchPairs according to the grouping result.

This invention discloses a multimodal feature quantification and extraction system for all age groups of humans, relating to the fields of artificial intelligence and digital life modeling. It includes a multimodal feature extraction module for all age groups, a high-fidelity extraction module for small samples, a lightweight feature data compression module, a digital personality data format definition module, and a data collection boundary control module. It collects multimodal features such as facial expressions, micro-expressions, voice, and body language in a tiered manner according to the dimensions of elderly, middle-aged, youth, and children, with specific optimizations for the extraction logic of the elderly and children groups; lightweight compression is achieved based on edge computing power, without dependence on cloud computing power; a custom digital personality basic data format is used to achieve data ownership confirmation and cross-platform interoperability; and human-specific feature collection boundaries are defined, with lossless stripping of auxiliary fields throughout the entire process. This invention achieves multimodal feature extraction for all age groups, lightweight edge processing, standardized packaging, and compliant control, adapting to the needs of civilian application of digital life and full life cycle modeling.

The invention provides a virtual resource generation method and device, electronic equipment and a storage medium, and belongs to the technical field of computers. The method comprises the steps that in response to an input operation on material description information, a first special effect material output by a generation model is displayed through the generation model matched with the material description information, the material description information is used for describing the form of the special effect material, and a main body and a special effect in the first special effect material are displayed in the form; and in response to a resource generation operation based on the first special effect material, displaying a generated virtual resource, the virtual resource being a data packet used for displaying the first special effect material in the live broadcast room. The generation model is a special model matched with the material description information, so that compared with a general generation model, the generation model has higher understanding capability on the material description information, and by applying the generation model, a user does not need to frequently input an instruction to correct the output content of the model, so that the overall generation efficiency is improved, and the user experience is improved. And the requirement of the live broadcast room for quickly renewing the virtual resources can be met.

The application discloses an epitaxial structure of a semiconductor device, a preparation method of the epitaxial structure and the semiconductor device, and the epitaxial structure comprises a substrate, a transition layer and a gallium nitride epitaxial layer; the transition layer is located on one side of the substrate; the gallium nitride epitaxial layer is located on a side, away from the substrate, of the transition layer; wherein the thickness X of the transition layer and the thickness Y of the gallium nitride epitaxial layer satisfy: Y=c-(X-b)*a; X+Y<c+b; in the formula, c represents an initial thickness reference value of the gallium nitride epitaxial layer, Y<c; b represents an initial thickness reference value of the transition layer, X>b; the units of X, Y, c and b are all nanometers; a is a first coefficient, and is unitless, 1<a<=10. The scheme can guarantee the performance of the device, reduce the thickness of the epitaxial structure of the device, reduce the cost, and improve the production capacity of a production line.

This invention discloses a group of Aβ40 and Aβ42-specific recognition peptides, the sequences of which are shown in SEQ ID NO.1 and SEQ ID NO.2, respectively. The invention also discloses conjugates of the Aβ40 and Aβ42-specific recognition peptides with carrier proteins, their applications, and the preparation of immunochromatographic detection reagents or kits for Alzheimer's disease. Compared to existing technologies, using magnetic microparticles coated or blocked with the peptides shown in SEQ ID NO.1 and 2 of this invention, under stable reagent components and processes, can effectively improve the sensitivity of immunochromatographic detection reagents; furthermore, the peptides shown in SEQ ID NO.1 and 2 do not or almost do not cross-react with other types of β-amyloid proteins, thus simultaneously ensuring both sensitivity and specificity.

This invention discloses a semi-quantitative RT-LAMP method and kit for viral nucleic acid detection based on dispensed lyophilized microspheres and a multi-channel microfluidic chip. The method includes: designing two independent LAMP primer sets (P1 and P2) for each of the SARS-CoV-2 Omicron strain N gene, Zika virus NS5 gene, H1N1 influenza virus M1 gene, and H3N2 influenza virus NP gene; preparing two independent types of lyophilized microspheres by independently mixing RT-LAMP premix containing Bst DNA polymerase and other components with LAMP primer mixture and a lyophilization protectant; and using an N-channel microfluidic chip to perform serial dilutions and parallel RT-LAMP amplification of the same sample, determining the concentration of viral nucleic acid in the sample by the positive / negative inflection points of each channel. This invention is simple to operate, requires no equipment such as a real-time PCR instrument, and is suitable for rapid virus detection in various scenarios.

This application discloses a method for fabricating a thermoelectric device and the thermoelectric device itself. The method includes: polishing a first connecting surface of a target silicon-germanium alloy and a second connecting surface of a target electrode material; fabricating a target connecting layer based on a target connecting material, wherein the target connecting material includes silicon carbide or a silicon carbide-based multiphase ceramic; bonding the first connecting surface, the target connecting layer, and the second connecting surface; and holding the material at a preset temperature and pressure range for a preset time to connect the target silicon-germanium alloy and the target electrode material to fabricate the thermoelectric device. This application uses silicon carbide or a silicon carbide-based multiphase ceramic as the connecting layer. Utilizing its high stability and compatibility with the silicon-germanium alloy, it can alleviate joint cracking caused by stress mismatch. Simultaneously, by selecting transition metals and high-entropy alloys in the multiphase ceramic, it utilizes metallic bonding characteristics to ensure good conductivity, thereby reducing contact resistance and ensuring the functional characteristics of the thermoelectric device.