Abstract: The present disclosure belongs to the technical field of wastewater treatment, and discloses an electrochemical nitrogen and phosphorus removal device and a method.

Abstract: Disclosed are an automatic welding system and method for large structural parts based on hybrid robots and 3D vision. The system comprises a hybrid robot system composed of a mobile robot and an MDOF robot, a 3D vision system, and a welding system used for welding. The rough positioning technique based on a mobile platform and the accurate recognition and positioning technique based on high-accuracy 3D vision are combined, so the working range of the MDOF robot in the XYZ directions is expanded, and flexible welding of large structural parts is realized. The invention adopts 3D vision, thus having better error tolerance and lower requirements for the machining accuracy of workpieces, positioning accuracy of mobile robots and placement accuracy of the workpieces; and the cost is reduced, the flexibility is improved, the working range is expanded, labor is saved, production efficiency is improved, and welding quality is improved.

Abstract: The present invention provides a B7-H3 nanobody, the preparation method and use thereof. The B7-H3 nanobody comprises framework regions 1-4 (FR 1-4) and complementarity determining regions 1-3 (CDR 1-3), can specifically bind to B7-H3, and can be used for detecting B7-H3 molecules, and be used for the treatment of various malignant tumors with abnormal expression of B7-H3 molecule.

Abstract: A method and apparatus for intensifying current leakage between adjacent memory cells includes that: a write operation is performed on a memory array, to form a column strip test pattern, the column strip test pattern being formed by arranging low-level memory cells and high-level memory cells in columns, and N columns of high-level memory cells being present between two adjacent columns of low-level memory cells, N?2; and voltage adjustment is performed on the low-level memory cells and the high-level memory cells, to increase potential differences between the low-level memory cells and the high-level memory cells.

Abstract: Provided are a recombinant classical swine fever virus comprising at least one substitution within the epitope of the E2 protein specifically recognized by the 6B8 monoclonal antibody, an immunogenic composition comprising said CSFV, the use of said immunogenic composition for preventing and/or treating diseases associated with CSFV in an animal, a method or a kit for differentiating animals infected with CSFV from animals vaccinated with said immunogenic composition, and an attenuated classical swine fever viruses.

Abstract: Expanded polypropylene beads are prepared from composite particles using a high-temperature and high-pressure kettle type foaming method. The composite particles include a core layer and a skin layer. The core layer includes one or more of the following components, for example in percentage by mass: 20-40% of polypropylene A, 60-80% of polypropylene B, 0-20% of polypropylene C and 0-10% of a thermal-conductive additive. The skin layer includes one or more of the following components, for example in percentage by mass: 40-80% of polypropylene D and 20-60% of polypropylene E. The composite particles are of a multi-layer structure with the skin layer covering the core layer. A resin of the skin layer is easy to sinter at low temperature and in compatibility with a main substrate resin of the core layer. The core layer resin adopts a selected mixture, which promotes molding expansibility.

Abstract: The present invention relates to the field of biomedical technology, and relates to a composite membrane comprising a decellularized amniotic membrane, a use of the composite membrane, and a method for preparing the composite membrane.

Abstract: The present invention provides an edible composition for alleviating visual fatigue. The composition comprises in parts by weight 1 to 10 parts of curcuma powder, 1 to 12 parts of whole coffee fruit extract, 1 to 20 parts of phospholipid composite, 1 to 15 parts of DHA, 0.5 to 5 parts of phosphatidylserine, and 0.1 to 5 parts of vitamin C. After one week of trial consumption by the subject, the duration of photopic vision is improved with a significant difference in comparison with that before the trial; after 2 weeks of trial consumption, the overall score of visual fatigue symptoms decreases with a significant difference in comparison with that before the trial; after 8 weeks of trial consumption by the subject, the vision field thereof is remarkably enlarged, indicating the formulation may prevent the occurrence of glaucoma. The coffee extract combined with the remaining ingredients has a synergistic effect.

Abstract: Embodiments of the present application provide a self-refresh frequency detection method, including: writing data to at least one wordline in a memory; performing a self-refresh operation on the memory; setting, after a clock enable signal changes to a low level, a duration of the low level; performing a reading operation on the memory at a positive trip point of the clock enable signal; acquiring a plurality of reading results corresponding to a plurality of durations of the low level; and obtaining a self-refresh frequency of the memory according to the plurality of durations of the low level and the plurality of reading results. The embodiments of the present application are conducive to improving the simplicity of self-refresh frequency detection.

Abstract: Provided a recombinant classical swine fever virus E2 protein comprising at least one mutation at the epitope specifically recognized by the 6B8 monoclonal antibody. Further, the present invention provides an immunogenic composition comprising the recombinant E2 protein of the present invention and the use of the immunogenic composition for preventing and/or treating diseases associated with CSFV in animal. Moreover, the present invention provides a method and a kit for differentiating animals infected with CSFV from animals vaccinated with the immunogenic composition of the present invention.

Abstract: The present invention provides an edible composition for promoting hair growth and delaying hair graying. The composition comprises in parts by weight: 2 to 30 parts of nucleoprotein peptides, 1 to 25 parts of whole coffee fruit extract, 5 to 60 parts of yeast composite powder and 10 to 55 parts of collagen. The edible composition for promoting hair growth and delaying hair graying provided by the present invention can promote hair growth, with a significant change in fine hair after 1 week of consumption and a 2 to 3 times increase in fine hair after 8 weeks of consumption, a significant reduction in the percentage of grey hair after 2 weeks of consumption, and a 10% to 40% reduction in the percentage of grey hair after 8 weeks of consumption. It also has an effect in skin improvement.

Abstract: Provided are a Phi29 DNA polymerase mutant with improved thermal stability and an use thereof in sequencing. The phi29 DNA polymerase mutant is represented by A) or B) below: the DNA polymerase mutant represented by the A) is a protein having DNA polymerase activity that is obtained by modifying at least one amino acid residue(s) in the following six sites in a phi29 DNA polymerase amino acid sequence: the 97-th, 123-th, 217-th, 224-th, 515-th, and 474-th sites; the DNA polymerase mutant represented by the B) is a protein having DNA polymerase activity that is derived from the A) by adding a tag sequence to a terminal of the amino acid sequence of the protein represented by the A).

Abstract: The present disclosure relates to a reverse transcriptase and an application thereof. The reverse transcriptase has mutation sites such as R450H compared with the wild-type M-MLV reverse transcriptase. The reverse transcriptase has increased polymerase activity, improved thermal stability, and reduced RNase H activity.

Abstract: Provided are a group of phi29 DNA polymerase mutants having increased thermal stability and use thereof. The phi29 DNA polymerase mutants are proteins obtained by performing point mutation A and/or point mutation B and/or point mutation C on phi29 DNA polymerase, the point mutation A meaning that an amino acid residue M at position 97 of the phi29 DNA polymerase is mutated to other amino acid residue, the point mutation B meaning that an amino acid residue L at position 123 of the phi29 DNA polymerase is mutated into other amino acid residue, and the point mutation C meaning that an amino acid residue E at position 515 of the phi29 DNA polymerase is mutated to other amino acid residue. The stability of the phi29 DNA polymerase mutants is higher than that of a wild-type phi29 DNA polymerase.

Abstract: Provided are a phi29 DNA polymerase mutant with increased thermo stability, a method for preparing the mutant, the use of the mutant, and a method for increasing the stability of the phi29 DNA polymerase.

Abstract: A touch control method and apparatus for a function key, and a storage medium are provided. The touch control method includes: determining a current handheld operation mode of a terminal, the handheld operation mode including at least one of a left hand operation mode, a right hand operation mode and a double hand operation mode; determining an operation area corresponding to the current handheld operation mode, activating a surface touch control function of the operation area and displaying the function key in the operation area; and determining whether a user performs a touch control operation on the function key in the operation area, according to a touch position of the user in the operation area and a position of the function key.

Abstract: Provided are a group of phi29 DNA polymerase mutants having increased thermal stability and use thereof. The phi29 DNA polymerase mutants are proteins obtained by performing point mutation A and/or point mutation B and/or point mutation C on phi29 DNA polymerase, the point mutation A meaning that an amino acid residue M at position 97 of the phi29 DNA polymerase is mutated to other amino acid residue, the point mutation B meaning that an amino acid residue L at position 123 of the phi29 DNA polymerase is mutated into other amino acid residue, and the point mutation C meaning that an amino acid residue E at position 515 of the phi29 DNA polymerase is mutated to other amino acid residue. The stability of the phi29 DNA polymerase mutants is higher than that of a wild-type phi29 DNA polymerase.

Abstract: The present invention relates to the fled of biomedical technology, and relates to a composite membrane comprising a decellularized amniotic membrane, a use of the composite membrane, and a method for preparing the composite membrane.

Abstract: Provided are a phi29 DNA polymerase mutant with increased thermo stability, a method for preparing the mutant, the use of the mutant, and a method for increasing the stability of the phi29 DNA polymerase.

Abstract: Methods and devices are provided for verifying a fingerprint in the field of computer technology. The method includes: N pressing operations successively performed by a finger of a user within an area for acquiring the fingerprint are acquired; a sequence of fingerprints to be verified is generated according to fingerprints and pressing intensities of the N pressing operations; the sequence of fingerprints to be verified is compared with a reference sequence of fingerprints; and when the sequence of fingerprints to be verified is the same as the reference sequence of fingerprints, it is determined that the fingerprint of the user is successfully verified.