Abstract: A high-precision multi-pole magnetoelectric encoder includes a mounting seat, a rotating shaft, a single-pole magnet ring, a single-pole signal processing board, a shielding shell, an n-pole magnet ring, an n-pole signal processing board, a housing, a conductive rubber pad, an aviation plug, bearings, copper columns, Hall components, and assembly screws. The magnetoelectric encoder improves the environmental adaptability and replaceability of the high-precision multi-pole magnetoelectric encoder by redesigning the structure of the multi-pole encoder. It eliminates errors caused by changes in the position of magnets and Hall sensors during the replacement process, reduces interference caused by the multi-pole magnet encircling the single-pole magnet, enhances resistance to electromagnetic interference, thereby increasing the detection accuracy of the magnetoelectric encoder, and improves the performance and competitiveness of the product.

Abstract: An acoustic device is provided, including a housing, and a sound source disposed in the housing, where the housing is provided with a sound outlet hole and a reverse-phase sound hole in different surfaces of the housing, and sounds emitted from the sound outlet hole and from the reverse-phase sound hole are opposite in phase and identical in amplitude; a first sound cavity is formed between a front end of the sound source and the sound outlet hole, and a second sound cavity is formed between a rear end of the sound source and the reverse-phase sound hole; and the first sound cavity is communicated with the second sound cavity through an acoustic dipole tube.

Abstract: An acoustic output apparatus and an earphone, including: a first diaphragm, a driving component, a second diaphragm and a housing structure, where a space between the second and first diaphragms close to the driving component forms a first cavity with the housing structure; a space between the electroacoustic transducer and the second diaphragm forms a second cavity with the housing structure; and in a working state, the driving component drives the first diaphragm to vibrate so as to cause the second diaphragm to passively vibrate, and a volume of the second cavity is not greater than ? of an equivalent volume of the electroacoustic transducer.

Abstract: A road structure reconstructed from large-scale independent underground garage and a construction method, which solves the problem of a newly constructed urban expressway passing through large underground space. The technical point is a construction method for the road structure reconstructed from large-scale independent underground garage, including the following steps: S100: segmentation for the garage, S200: preparation before construction: the materials and equipment required for construction are transported to the site, and the construction site is cleaned, S300: reconstruction for the front section, S400: reconstruction for the middle section, S500: reconstruction for the rear section. The inventiveness of the present disclosure is the application of segmentation construction, the front section is completely obsoleted, a transition section is provided at the middle, and the design of the rear section adopts a double-deck road, thus the original underground garage structure is fully utilized.

Abstract: Disclosed is a simple synthesis method of lactam derivatives, comprising: with formamide functioning as both an amine source and a hydrogen source (hydrolyzed to produce formic acid), carrying out a cycloamination reaction on a raw material keto acid in the absence of a solvent or a catalyst to simply synthesize a lactam derivative. Compared with previous reports, the present disclosure has the following advantages: the time required for the reaction is greatly shortened, the selectivity is remarkably improved, a conversion rate of a keto acid derivative is greater than 99%, and the yield of the lactam derivative can reach 70% to 94%.

Abstract: Provided is a road structure reconstructed from large-scale independent underground garage and a construction method, which solves the problem of a newly constructed urban expressway passing through large underground space. The technical point is a construction method for the road structure reconstructed from large-scale independent underground garage, including the following steps: S100: segmentation for the garage, S200: preparation before construction: the materials and equipment required for construction are transported to the site, and the construction site is cleaned, S300: reconstruction for the front section, S400: reconstruction for the middle section, S500: reconstruction for the rear section. The inventiveness of the present disclosure is the application of segmentation construction, the front section is completely obsoleted, a transition section is provided at the middle, and the design of the rear section adopts a double-deck road, thus the original underground garage structure is fully utilized.

Abstract: A two-step diffusion method for preparing high-performance dual-main-phase sintered mischmetal-iron-boron magnet belongs to the preparing technical field of rare earth permanent magnet materials. The compositions of the two main phase alloys are RE-Fe—B (RE is Nd or Pr) and (Nd, MM)-Fe—B (MM is mischmetal), respectively. First, PrHoFe strip-casting alloy is used as a diffusion source. Next, a PrHo-rich layer is uniformly coated on the surface of (Nd, MM)-Fe—B hydrogen decrepitation powders. The higher anisotropic fields of Pr2Fe14B and Ho2Fe14B are used to improve the coercivity. Then, the ZrCu strip-casting alloy is used as a diffusion source. A Zr-rich layer is uniformly coated on the surface of the powders after the first-step diffusion, which prevents the growth of the MM-rich main phase grains during the sintering process and the inter-diffusion between the two main phases, thus obtaining high coercivity.

Abstract: Disclosed is a simple synthesis method of lactam derivatives, comprising: with formamide functioning as both an amine source and a hydrogen source (hydrolyzed to produce formic acid), carrying out a cycloamination reaction on a raw material keto acid in the absence of a solvent or a catalyst to simply synthesize a lactam derivative. Compared with previous reports, the present disclosure has the following advantages: the time required for the reaction is greatly shortened, the selectivity is remarkably improved, a conversion rate of a keto acid derivative is greater than 99%, and the yield of the lactam derivative can reach 70% to 94%.

Abstract: A two-step diffusion method for preparing high-performance dual-main-phase sintered mischmetal-iron-boron magnet belongs to the preparing technical field of rare earth permanent magnet materials. The compositions of the two main phase alloys are RE-Fe—B (RE is Nd or Pr) and (Nd, MM)-Fe—B (MM is mischmetal), respectively. First, PrHoFe strip-casting alloy is used as a diffusion source. Next, a PrHo-rich layer is uniformly coated on the surface of (Nd, MM)-Fe—B hydrogen decrepitation powders. The higher anisotropic fields of Pr2Fe14B and Ho2Fe14B are used to improve the coercivity. Then, the ZrCu strip-casting alloy is used as a diffusion source. A Zr-rich layer is uniformly coated on the surface of the powders after the first-step diffusion, which prevents the growth of the MM-rich main phase grains during the sintering process and the inter-diffusion between the two main phases, thus obtains high coercivity.

Abstract: A light folding scooter having a bottom plate, and two sides of the bottom plate respectively provided with a lifting handle at a center of gravity of the sides of the scooter after the scooter is folded, and a scooter head and scooter tail of the bottom plate provided with a scooter head lifting handle and a scooter tail groove matched with the scooter head lifting handle for carrying the scooter, wherein the location of the two lifting handles on the sides of the bottom plate at the center of gravity of the scooter after the scooter is folded, allows lifting of the scooter using the two bottom plate lifting handles after being folded by hand can keep balance of a scooter body, which is convenient for carrying the scooter after being folded. When two people lift the scooter, one can locate at the scooter head position to hold the scooter head lifting handle and the other can locate at the scooter tail position to hold the scooter tail groove, so that the scooter can be easily carried.

Abstract: Provided are an oxovanadium phosphate catalyst, and a preparation method and an application therefor. The method includes: 1) mixing and reacting a vanadium source, a choline chloride-organic carboxylic acid eutectic solvent, and alcohol; 2) mixing the obtained reaction product with a phosphorus source, raising the temperature to a temperature higher than the melting point of the eutectic solvent, and continuing the reaction to obtain an oxovanadium phosphate precursor; and 3) calcining to obtain the oxovanadium phosphate catalyst. The alcohol is: benzyl alcohol or a mixture of C3-C8 monohydric alcohol and benzyl alcohol. The present method uses a green and inexpensive eutectic solvent to strengthen the preparation of oxovanadium phosphate catalyst, avoids the disadvantages of the prior art, and overcoming the problems of low yield and poor selectivity when used in a reaction to prepare maleic anhydride by catalytic n-butane selective oxidisation.

Abstract: An illustrative embodiment provides a computer implemented method for extracting named entity information from full text includes obtaining text data from a document. The method also includes tokenizing the text data as numbers to produce a tokenized layer. The method also includes creating an embedded layer from the tokenized layer by encoding the text data by indices. The method also includes creating a one-dimensional Xception layer from the embedded layer according to a one-dimensional convolution. The method also includes determining a sequence of classification for the text data according to the one-dimensional Xception layer. The method also includes determining a named entity value from the text data according to the sequence of classification, wherein each sequence of classification predicts one character of the named entity value.

Abstract: An illustrative embodiment provides a computer implemented method for extracting named entity information from full text includes obtaining text data from a document. The method also includes tokenizing the text data as numbers to produce a tokenized layer. The method also includes creating an embedded layer from the tokenized layer by encoding the text data by indices. The method also includes creating a one-dimensional Xception layer from the embedded layer according to a one-dimensional convolution. The method also includes determining a sequence of classification for the text data according to the one-dimensional Xception layer. The method also includes determining a named entity value from the text data according to the sequence of classification, wherein each sequence of classification predicts one character of the named entity value.

Abstract: Training an artificial intelligence system to process agency notices. The process identifies historical data that includes historical text generated from optical character recognition performed on historical images of the agency notices and historical metadata for items in the historical images of the agency notices. The process generates annotations for the historical text. The annotations identify the items in the historical text and locations of the items in the historical text. The process trains the artificial intelligence system using the historical data and the annotations.

Abstract: Provided are an oxovanadium phosphate catalyst, and a preparation method and an application therefor. The method includes: 1) mixing and reacting a vanadium source, a choline chloride-organic carboxylic acid eutectic solvent, and alcohol; 2) mixing the obtained reaction product with a phosphorus source, raising the temperature to a temperature higher than the melting point of the eutectic solvent, and continuing the reaction to obtain an oxovanadium phosphate precursor; and 3) calcining to obtain the oxovanadium phosphate catalyst. The alcohol is: benzyl alcohol or a mixture of C3-C8 monohydric alcohol and benzyl alcohol. The present method uses a green and inexpensive eutectic solvent to strengthen the preparation of oxovanadium phosphate catalyst, avoids the disadvantages of the prior art, and overcoming the problems of low yield and poor selectivity when used in a reaction to prepare maleic anhydride by catalytic n-butane selective oxidisation.

Abstract: Enabling a computer to automatically enter information into a unified database from heterogenous documents. An image file is received. The image file is displayed in a first area of a window rendered on a tangible display device. The fields for data entry are displayed in a second area of the window. Optical character recognition is performed on the image file. At least one parameter of text is identified in the image file. The at least one parameter of the text is compared to at least one of a plurality of stored parameters. The text is sorted according to the at least one of the plurality of stored parameters into a plurality of categories, wherein sorted text is formed. The fields are auto-populated and displayed in the second area of the window based on the sorted text.

Abstract: Training an artificial intelligence system to process agency notices. The process identifies historical data that includes historical text generated from optical character recognition performed on historical images of the agency notices and historical metadata for items in the historical images of the agency notices. The process generates annotations for the historical text. The annotations identify the items in the historical text and locations of the items in the historical text. The process trains the artificial intelligence system using the historical data and the annotations.

Abstract: The present invention relates to night lamps and particularly to a detachable night lamp. The detachable night lamp includes a lampshade, a mounting base, a circuit board installed in the mounting base and having an illuminator electrically connected to the circuit board, a receiving chamber formed at the top surface of the mounting base. The receiving chamber has a through hole corresponding to the illuminator. A plug connector is installed at the bottom end of the lampshade for connecting the receiving chamber and the plug connector includes a cylinder connected to the bottom of the lampshade bottom, and a semi-circular fastening ring disposed on the outer wall of the cylinder. A fastening block is disposed on an inner wall of the receiving chamber for connecting the semi-circular fastening ring. The mounting base and the lampshade have a detachable design.

Abstract: A wireless battery case can be used with a mobile electronic device. The wireless battery case can have a back wall, a top wall, a right side wall, a left side wall, and a bottom wall configured such that at least a portion of a bottom of the mobile electronic device is uncovered by the bottom wall. The case can further include a battery coupled to a wireless receiver and a wireless transmitter. The wireless receiver can be configured to receive wireless signals and provide the wireless signals to the battery. The wireless transmitter can be configured to receive the wireless signals from the battery and/or the wireless receiver and wirelessly provide the wireless signals to the mobile electronic device.