Abstract: The invention discloses a catalyst coated membrane and preparation method thereof, membrane electrode and fuel cell. The above preparation method includes: firstly, adding sodium type resin to an aqueous-alcohol dispersion of Pt/C catalyst, and stirring and dispersing to obtain a catalyst slurry; secondly, coating the catalyst slurry onto a PTFE membrane, drying at room temperature, and then transferring to an sintering box for heat treatment to obtain a catalyst coated PTFE membrane; thirdly, preparing a proton membrane with catalyst transfer layer by thermocompression transfer of the catalyst coated PTFE membrane and a proton exchange membrane; finally, protonating the proton membrane with catalyst transfer layer to obtain a catalyst coated membrane. The present invention utilizes the great thermal stability of sodium type resin to enhance the crystallization degree of Nafion-H in the catalyst coated membrane through heat treatment, thereby improving the resistance to free radical oxidation and corrosion.

Abstract: A culture medium for hepatoma organoid culture, comprising an MST1/2 kinase inhibitor, at least one cell culture additive selected from N2 and B27, a hepatocyte growth factor, an ITS cell culture additive, Y27632, dexamethasone, Neuregulin-1, insulin, an epidermal cell growth factor, GlutaMAX, and non-essential amino acids. The application further relates to a hepatoma organoid culture method and an application thereof. By using the culture medium for hepatoma organoid, effective and rapid expansion of the hepatoma organoid can be achieved, and the organoid obtained by such expansion maintains the pathological characteristics of a patient, improves the culture success rate and the expansion rate of the hepatoma organoid, and provides a research basis for individualized treatment of the patient.

Abstract: A time synchronization method used for a time synchronization device is provided. The time synchronization device runs a plurality of Precision Time Protocol (PTP) instances to connect to a plurality of time synchronization domains through a plurality of ports. The time synchronization method includes selecting a grandmaster (GM) clock from the plurality of time synchronization domains; updating clock information of the grandmaster clock; determining whether each of the plurality of ports is a time receiving port or a time transmitting port according to the grandmaster clock; modifying clock attributes of each of the plurality of PTP instances according to whether the corresponding port is the time receiving port or the time transmitting port; and synchronizing, by the plurality of PTP instances, timings of the plurality of time synchronization domains according to the grandmaster clock.

Abstract: A digital content clipping system receives an indication that a first web page has been accessed by a first user, and searches a repository of digital content clips associated with the first web page. In accordance with a determination that the repository does not include any user-generated digital content clips associated with the first web page, the system offers one or more first clipping options based on predefined clip templates, receives selection, by the first user, of one of the first clipping options, extracts a digital content clip of the first web page in accordance with the selected one of the first clipping options, and stores the digital content clip of the first web page in a first clip collection associated with the first web page.

Abstract: A time synchronization method is provided for a time synchronization device, wherein the time synchronization device runs a plurality of precision time protocol (PTP) instances to connect to a plurality of time synchronization domains respectively. The time synchronization method includes determining whether a frequency of a local PTP clock of the time synchronization device is changed; and updating a frequency of a local clock of the time synchronization device with the frequency of the local PTP clock in response to the frequency of the local PTP clock being changed.

Abstract: A cyber-physical integrated restoration method and system for distribution systems based on emergency mobile communications are provided. After extreme natural disasters which cause serious damage to distribution systems, damages of distribution systems are evaluated through system feedback data. When ground communication base stations are unavailable due to the damages, the method can make full use of existing wireless emergency communication resources to provide emergency communication services, and quickly restore the power supply through distribution automation functions with supports of the backup battery of automatic terminal devices, so as to effectively improve the resilience of distribution systems.

Abstract: An integrated circuit structure includes an aluminum pad layer on a dielectric stack, a passivation layer covering the aluminum pad layer, and an aluminum shield layer including aluminum routing patterns disposed directly above an embedded memory area and embedded in the dielectric stack. The aluminum shield layer is electrically connected to the uppermost copper layer through a plurality of tungsten vias. The plurality of tungsten vias is embedded in the dielectric stack.

Abstract: In some embodiments, a method generates a first representation of a first relationship between bitrate and quality based on first features of a first portion of a video. The first representation is analyzed to determine a first list of potential bitrates for the first portion of video. The method analyzes potential bitrates and quality associated with the respective potential bitrates to refine the first list of potential bitrates to a second list of bitrates. The second list of bitrates includes a different list of bitrates than the first list of potential bitrates. The method outputs the second list of bitrates for encoding the first portion of video.

Abstract: A controller for an AC-DC converter including a rectifier circuit that converts AC input voltage into DC output voltage uses control logic to control the rectifier circuit according to two or more operating modes. Each operating mode determines a gain of the rectifier circuit. The controller selects an operating mode from the two or more operating modes based on at least one of an AC input voltage value and a required DC output voltage value. The AC-DC converter provides a wide range of DC output voltage with power factor correction. The controller may be used with AC-DC converter topologies such as boost converter, isolated boost converter, PWM converter, LLC resonant converter, and LCC resonant converter.

Abstract: The present invention discloses a RamA transcription factor mutant for promoting the production of N-acetylglucosamine and use thereof. The mutant is obtained by mutating lysine at position 90 to asparagine and serine at position 92 to lysine in a parent having an amino acid sequence as shown in SEQ ID NO: 2. The present invention provides a genetically engineered strain that overexpresses the RamA transcription factor mutant and increases the production of N-acetylglucosamine. By overexpressing the transcription factor RamA that is involved in the regulation of carbon metabolism, the extracellular accumulation of N-acetylglucosamine is increased, with a maximum concentration reaching 31.5 g/L, which lays a foundation for further metabolic engineering of Corynebacterium glutamicum to produce glucosamine. The method for constructing recombinant Corynebacterium glutamicum of the invention is simple, and convenient in use, and thus has good application prospects.

Abstract: A display panel includes: a backplane, a plurality of light-emitting devices, a plurality of connecting leads, a first protective layer and a reflective layer. The backplane includes a first main surface, a second main surface, and a plurality of side surfaces. At least one side surface is as a selected side surface. The plurality of light-emitting devices are disposed on the second main surface and are electrically connected to the plurality of connecting leads. The plurality of connecting leads are disposed on the first main surface, the selected side surface and the second main surface, and each connecting lead sequentially passes through the selected side surface and the second main surface from the first main surface. The first protective layer covers the plurality of connecting leads. The reflective layer includes at least a first portion covering a portion of the first protective layer on the selected side surface.

Abstract: Provided is an intake bypass recirculation structure capable of silencing, including: an intake bypass recirculation structure body and a structure-conducted silencing device. An intake bypass recirculation cavity is provided on the intake bypass recirculation structure body. An inlet of the intake bypass recirculation structure and an outlet of the intake bypass recirculation structure that are provided on the intake bypass recirculation structure body are each connected to the intake bypass recirculation cavity. The structure-conducted silencing device is disposed inside the intake bypass recirculation cavity. In this application, during working, noise generated by a compressor is transmitted into the intake bypass recirculation cavity via an inlet of the intake bypass recirculation structure, and transmitted outside via the outlet of the intake bypass recirculation structure.

Abstract: Provided is a method for preparing an intervertebral disc annulus fibrosus implant, including: obtaining a sample having a plurality of ring-shaped collagen fiber layers; cutting and shaping the sample into a column having a top surface, an opposite bottom surface, and a peripheral surface connecting the top surface and the opposite bottom surface, wherein an area of the top surface is smaller than the area of the bottom surface; removing cells in the column; disinfecting, drying and shaping the column to prepare an column-shaped intervertebral disc annulus fibrosus implant. The present disclosure further provides an intervertebral disc annulus fibrosus implant and a method for transplanting an intervertebral disc annulus fibrosus implant. The disclosure can repair the damage of the intervertebral disc fibrous annulus and prevent the leakage of gel-like materials in the nucleus pulposus.

Abstract: Disclosed in the present disclosure is a low-cost and zero-shot online log parsing method based on a large language model, including: firstly, extracting content of a log in a log message using regular expressions, then, performing regular expression matching with a log template in a database; if the matching is successful, updating a log sample corresponding to the log template; if the matching fails, conducting a dialogue with the large language model to obtain a new log template; performing template correction to prevent the log template generated by the large language model from being incapable of performing regular expression matching with the log message; performing template merging when a new template is generated; performing template splitting when the log sample is updated; and for all log templates to be added to the database, firstly, normalizing the log templates by post-processing, and then storing the log templates to the database.

Abstract: In some embodiments, the present disclosure relates to a method that includes aligned a first wafer with a second wafer. The second wafer is spaced apart from the first wafer. The first wafer is arranged on a first electrostatic chuck (ESC). The first ESC has electrostatic contacts that are configured to attract the first wafer to the first ESC. Further, the second wafer is brought toward the first wafer to directly contact the first wafer at an inter-wafer interface. The inter-wafer interface is localized to a center of the first wafer. The second wafer is deformed to gradually expand the inter-wafer interface from the center of the first wafer toward an edge of the first wafer. The electrostatic contacts of the first ESC are turned OFF such that the first and second wafers are bonded to one another by the inter-wafer interface.

Abstract: In some embodiments, a method receives a first image and a second image for a comparison of film grain. The first image and the second image are converted from a spatial domain to a frequency domain to generate a first frequency domain representation for the first image and a second frequency domain representation of the second image. The method compares a first distribution of frequency components from the first frequency domain representation to a second distribution of frequency components from the second frequency domain representation. A score for an assessment of differences of the film grain in the first image and the second image is generated based on the comparing.

Abstract: A method of manufacturing semiconductor device includes forming a multilayer photoresist structure including a metal-containing photoresist over a substrate. The multilayer photoresist structure includes two or more metal-containing photoresist layers having different physical parameters. The metal-containing photoresist is a reaction product of a first precursor and a second precursor, and each layer of the multilayer photoresist structure is formed using different photoresist layer formation parameters. The different photoresist layer formation parameters are one or more selected from the group consisting of the first precursor, an amount of the first precursor, the second precursor, an amount of the second precursor, a length of time each photoresist layer formation operation, and heating conditions of the photoresist layers.

Abstract: A method includes: obtaining a first image including a target item; selecting a plurality of reference images corresponding to the first image from a database; performing word segmentation on item text information corresponding to the plurality of reference images to obtain a plurality of words; and extracting a key word meeting a reference condition from the plurality of words, and determining the extracted key word as an item name of the target item.

Abstract: An antenna is provided. The antenna includes a first radiator positioned at a first level and connected to a ground plane at a second level. In a top view, the first radiator has a first edge, a second edge, a third edge, a fourth edge and a first arc edge. The second edge and the third edge are connected to opposite ends of the first edge. The fourth edge is connected to an end of the third edge opposite to the first edge. The first arc edge with a first radius has opposite ends respectively connected to the second edge and the fourth edge. The first arc edge has a first arc length corresponding to a first central angle, which is less than 90 degrees.

Abstract: In some embodiments, a method for forming a semiconductor device is provided. The method includes etching a substrate to form a recess within a surface of the substrate. An epitaxial material is formed within the recess, a capping structure is formed on the epitaxial material, and a capping layer is formed onto the capping structure. The capping layer laterally extends past an outermost sidewall of the capping structure. Dopants are implanted into the epitaxial material. Implanting the dopants into the epitaxial material forms a first doped region having a first doping type and a second doped region having a second doping type.