Abstract: The present disclosure relates to a method for treating a wafer surface. By controlling the gas composition at each stage of the treatment process, and corresponding processes of heating and annealing, and cooling and thinning by oxidation, the final wafer is enabled to have a surface roughness of less than 5 ?. This effectively reduces the cost of the final treatment process and has good application prospects.

Abstract: The present disclosure relates to a method for improving the surface roughness of a SOI wafer. By controlling the gas composition at each stage of the rapid thermal treatment process and corresponding heating and annealing processes, the final wafer is enabled to have a surface roughness of less than 5? and has good application prospects.

Abstract: The present invention relates to a method for producing a composite membrane, the method comprising impregnating a surface of a porous membrane substrate with an aqueous suspension comprising a mixture of at least one polyamine and at least one hospholipid; and contacting the impregnated surface with an organic phase containing a monomer to thereby deposit a polyamide layer on the impregnated surface. The present invention also relates to a composite membrane comprising at least one porous membrane substrate having nano-sized or micro-sized pores; and at least a polyamide layer disposed on a surface of the porous membrane substrate, the polyamide layer comprising at least one phospholipid dispersed therein, and wherein the polyamide layer is an interfacial polymerization product.

Abstract: The present disclosure relates to the technical field of silicon carbide processing, and discloses a method and device for preferential etching of dislocation of a silicon carbide wafer. According to the method and device of the present disclosure, a concentration of the etchant is effectively reduced while the high-temperature etching activity is guaranteed, the dislocations on the carbon surface and the silicon surface of the silicon carbide wafer are exposed, and dislocation etching pits with high distinguishing degree are obtained on the carbon surface and the silicon surface of the silicon carbide wafer and thus identified clearly.

Abstract: Disclosed are a hinge and a refrigeration equipment. The hinge includes a vertical hinge shaft, a first hinge base and a second hinge base. The first hinge base includes a first installation plate and a first sleeve rotatably connected to the hinge shaft to make the first sleeve rotate around the hinge shaft. A lower end of the first sleeve is provided with a first slope sloping downwards. The second hinge base below the first hinge base includes a second installation plate and a second sleeve fixed on the hinge shaft. An upper end of the second sleeve is provided with a second slope sloping upwards. The second slope abuts against and cooperates with the first slope for the first sleeve to move from a first position to a second position along a direction away from the second sleeve or from the second position to the first position along a direction close to the second sleeve while being rotated around the hinge shaft.

Abstract: An improved method for purifying Gc protein to a high purity, and a method for producing GcMAF are provided. According to the present disclosure, Gc protein is purified through a combination of affinity chromatography and anion exchange chromatography, and thus, Gc protein can be purified to a higher purity as compared with a conventional purification method using affinity chromatography alone. As a result, GcMAF can be efficiently produced.

Abstract: An aluminum borate whisker reinforced and toughened non-metallic matrix composite is provided, which specifically includes a non-metallic material reinforced and toughened with aluminum borate whiskers. The composite exhibits a higher bending strength and fracture toughness and a higher wear resistance. A method for preparing the composite is also provided. The method includes mixing the aluminum borate whiskers and the non-metallic material to form a mixture; and sintering the mixture by a vacuum hot press method, or molding the mixture.

Abstract: Methods, systems, and computer-readable media for batch processing with random access for transaction history are disclosed. A batch processing system receives a batch comprising records of events, including a first record of a first event and a second record of a second event. The system assigns the first and second records to a group based (at least in part) on determining that the events are related. The system determines that the group is related to a match set comprising one or more prior events. The system updates one or more values in the match set based (at least in part) on the first and second records. The system stores the updated match set and one or more additional match sets using a storage object. The system retrieves the match set and not the one or more additional match sets from the storage object using an index.

Abstract: Disclosed in the present disclosure is a method for preparing 16alpha-hydroxyprednisolone, belonging to the technical field of medicine preparation and processing. In the method, 21-hydroxypregna-1,4,9(11),16-tetraene-3,20-dione-21-acetate is used as a starting material, and subjected to oxidation, bromo-hydroxylation, debromination and alcoholysis, so as to prepare 16alpha-hydroxyprednisolone. The method for preparing 16alpha-hydroxylprednisolone of the present disclosure can effectively control the generation of impurities in the reaction process by improving the disadvantages of traditional processes, and has a mild reaction process and a high overall conversion rate; and the method of the present disclosure has low requirements for a reaction device and low operation costs, is easy to operate, is suitable for industrial production, and has a good market prospect.

Abstract: An ultrasonic electronic rhinitis therapeutic apparatus with far-infrared atomized coconut essential oil is disclosed. The apparatus includes a nasal plug part and a nasal alar part. The nasal plug part includes an insertion column disposed in a nostril. The insertion column is internally provided with a coconut powder, and a far-infrared generating tube is arranged in the coconut powder. An ultrasonic generator is arranged in the nasal alar part, and the nasal alar part is fitted on the lateral side of the nasal alar. In the disclosure, the oil and acid substance in the coconut powder are atomized by far-infrared light and are atomized under the aid of pulse ultrasonic wave in the nasal cavity to be inhaled into the internal tissues of the nasal cavity, sinus and the like.

Abstract: The present disclosure relates to the field of manufacturing of silicon carbide (SiC) single crystal wafers, and discloses a stripping method and a stripping device for SiC single crystal wafers. The single crystal wafers obtained by the present disclosure have no damage layer or stress residue on surfaces or sub-surfaces, and are simple in operation and low in cost.

Abstract: A display substrate and a display panel, the display substrate includes a display region and a peripheral region surrounding the display region, the peripheral region has a first linear edge portion extending in a first direction, a second linear edge portion extending in a second direction and a corner edge portion connecting the first linear edge portion and the second linear edge portion, the first direction and the second direction intersect to each other, and a minimum distance between at least a portion of the corner edge portion and an adjacent edge of the display region is smaller than a minimum distance between the first linear edge portion and/or the second linear edge portion and an adjacent edge of the display region, so as to form a concave portion in the corner edge portion towards the display region.

Abstract: The present invention discloses a molecular sieve and its preparation method. The molecular sieve has micromorphology in a football shape and consists of molecular sieve framework and active elements. The molecular sieve framework comprises silicon element and aluminum element; the active elements comprise copper element and rare earth elements. The rare earth elements are one or more selected from the group consisting of La, Ce, Pr, Nd, Pm, Sm, Eu, Sc and Y. The mass ratio of the silicon element to the aluminum element is 3-9:1. The content of the copper element in the molecular sieve is 1.5-3.2 wt %. The mass of rare earth elements is 50 ppm-2 wt % of the molecular sieve framework. The mass of the silicon element is calculated by silicon dioxide, the mass of aluminum element is calculated by aluminum oxide, the mass of copper element is calculated by copper oxides, and the mass of rare earth elements is calculated by rare earth oxides.

Abstract: The present disclosure provides a purification method of progesterone. In this method, aldehyde impurities in a progesterone crude product react with a sulfurated nucleophile to yield highly polar hydroxysulfonates and progesterone to realize solubility differentiation, and highly pure progesterone with a content higher than 99.5% and a total aldehyde impurities content lower than 0.2% is obtained through elutriation, filtration, washing a filter cake with water, and drying.

Abstract: A computer-implemented method, system and computer program product for improving understandability of text by a user. A final word vector for each word in a sentence of a document is computed, such as by averaging a first word vector and a second word vector for that word. Furthermore, elements of a user portrait are vectorized. A distance is then computed between a vector for each word in the sentence and a vectorized element in the user’s portrait which is summed to form an evaluation result for the element. An evaluation result is also formed for every other element in the user’s portrait by performing such a computation step. A “final evaluation result” is then generated corresponding to the evaluation results for every element in the user’s portrait. The document is then transformed in response to the final evaluation result indicating a lack of understanding of the sentence by the user.

Abstract: Disclosed in the present disclosure is a method for preparing 16alpha-hydroxyprednisolone, belonging to the technical field of medicine preparation and processing. In the method, 21-hydroxypregna-1,4,9(11),16-tetraene-3,20-dione-21-acetate is used as a starting material, and subjected to oxidation, bromo-hydroxylation, debromination and alcoholysis, so as to prepare 16alpha-hydroxyprednisolone. The method for preparing 16alpha-hydroxylprednisolone of the present disclosure can effectively control the generation of impurities in the reaction process by improving the disadvantages of traditional processes, and has a mild reaction process and a high overall conversion rate; and the method of the present disclosure has low requirements for a reaction device and low operation costs, is easy to operate, is suitable for industrial production, and has a good market prospect.

Abstract: According to certain embodiments, a system comprises one or more processors and one or more computer-readable non-transitory storage media comprising instructions that, when executed by the one or more processors, cause one or more components of the system to perform operations. The operations comprise sending data from a hub to a spoke and receiving feedback from the spoke at the hub. The feedback is based on at least one of bandwidth utilization or occurrence of a congestion state detected by the spoke. The operations further comprise adjusting a shaper rate of an adaptive Quality of Service (QoS) shaper based at least in part on the feedback received from the spoke.

Abstract: The present invention provides an electronic device. The electronic device includes a mainboard, a metal frame, a display module, and a shield structure. The mainboard includes a radio frequency circuit. The metal frame is coupled to the radio frequency circuit, and configured to receive or transmit a radio frequency signal. The shield structure is located in the display module or on a side of the display module closer to the mainboard, and is connected to the display module. The shield structure includes a metal shield layer. The metal shield layer is insulated from the metal frame and the radio frequency circuit, and the metal shield layer can generate reflection between the metal frame and the display module, weaken field strength generated in the display module by radiated energy from the metal frame, and shield the energy radiated from the metal frame to the display module.

Abstract: A display substrate and a display apparatus are provided. The display substrate includes: a display region and a non-display region, the non-display region including a fan-out region and a bending region; a plurality of sub-pixels located in the display region; a plurality of first data signal lines located in the display region and electrically connected with the plurality of sub-pixels; a plurality of fan-out wires located in the fan-out region; a plurality of second data signal lines located in the bending region; and a plurality of transfer lines located in the fan-out region and between the plurality of fan-out wires and the plurality of second data signal lines, wherein a ratio of a width of at least part of the plurality of transfer lines to a width of the plurality of fan-out wires is 0.5 to 5.5.