Abstract: A microbial protectant in a high-nutrient and high-activity chemical fertilizer-biological compound fertilizer and a preparation method thereof are related, belonging to the technical field of biological extracts. The microbial protectant mainly includes alginate oligosaccharide and tetrahydropyrimidine, with the other ingredients further including at least one of burdock oligosaccharide, chitosan oligosaccharide, amino acid, vegetable oil, fumaric acid, and citric acid. The microbial protectant can protect microorganisms from injury and death in extreme environments, such as a high-salt environment, has broad application prospects, and may be applied to the preparation of a high-activity microbial agent and the preparation of a high-nutrient chemical fertilizer-biological compound fertilizer.

Abstract: The present disclosure discloses a charger for facilitating charging of a smartwatch, including a charger body and a wireless charging structure, wherein a recess is disposed on a surface of the charger body; and an end of the wireless charging structure is connected to the charger body, and the wireless charging structure is flipped and collected in the recess. According to the present disclosure, connection to the wireless charging structure can be achieved by means of a magnetic attraction property to thus allow for charging and fixation; the wireless charging structure also has a flip feature and can be flipped and pulled out of the recess; and a user can make adjustment according to his/her own usage scenario, such that a dial plate of the smartwatch faces towards the user all the time to facilitate acquisition of information of the dial plate, which increases convenience during charging.

Abstract: Disclosed are a machine model update method and apparatus, a medium, and a device. The method includes: obtaining first hard example samples of a machine model and attribute information of the first hard example samples; determining category-based data distribution information of the first hard example samples according to the attribute information of the first hard example samples; determining second hard example samples of the machine model in current machine learning according to learning requirement information of the machine model for categories of the first hard example samples and the data distribution information; performing, according to learning operation information corresponding to the machine model, a learning operation on the machine model by using the second hard example samples; and updating the machine model based on a learning result of the machine model. The present disclosure helps efficiently implement a machine learning lifecycle, and reduce the cost of machine learning lifecycle.

Abstract: A device for remote online detection of an environmental noise monitoring system, comprising a control bus, and a meteorological monitoring module, a video monitoring module, a signal analyzing device, a platform communication port, an instrument communication port, a sinusoidal signal generation module, a tone burst generation module, an attenuator module and a power amplifier module respectively connected with the control bus; wherein the sinusoidal signal generation module and the tone burst generation module are respectively connected with a signal input end of the attenuator module; an output end of the attenuator module is connected with an input end of the power amplifier module; an output end of the power amplifier module is connected with a preamplifier adapter and an active comparison coupler, respectively.

Abstract: Disclosed are a behavior recognition method and apparatus, a medium and device. The method includes: obtaining a sequence of image blocks containing a target part of a target object from a plurality of video frames obtained by a camera apparatus disposed in a mobile device; extracting a feature vector on a first preset behavior from the sequence to obtain a first feature vector corresponding to the sequence; determining a behavior type to which a behavior of the target object belongs based on the first feature vector; and if the behavior type to which the behavior belongs satisfies a first behavior type, determining the behavior based on a result of behavior recognition on a second preset behavior for the sequence. The disclosure may realize cascade recognition of the behavior of the target object, thereby helping to improve accuracy of behavior recognition and further driving safety of the mobile device.

Abstract: Disclosed are a behavior recognition method and apparatus, a medium and device. The method includes: obtaining a sequence of image blocks containing a target part of a target object from a plurality of video frames obtained by a camera apparatus disposed in a mobile device; extracting a feature vector on a first preset behavior from the sequence to obtain a first feature vector corresponding to the sequence; determining a behavior type to which a behavior of the target object belongs based on the first feature vector; and if the behavior type to which the behavior belongs satisfies a first behavior type, determining the behavior based on a result of behavior recognition on a second preset behavior for the sequence. The disclosure may realize cascade recognition of the behavior of the target object, thereby helping to improve accuracy of behavior recognition and further driving safety of the mobile device.

Abstract: Disclosed is a 5-fluorouracil derivative having the molecular structure shown in general formula VI, in which Ra and Rb groups are an alkoxy group or a fluorine-substituted alkoxy group having 1, 2, 3, or 4 carbon atoms, and are mono-, bis-, tri-, tetra- or penta-substituted on a phenyl group; a linking group L1 is an alkyl or alkenyl group having 1, 2, 3, or 4 carbon atoms, a linking group L2 is oxygen, or an alkyl or alkoxy group having 1, 2, 3, or 4 carbon atoms, or an amino acid, or an alkyl group having 1, 2, 3, or 4 carbon atoms containing an amino moiety, or a furyl group, and an X group is O or —NH—. Further disclosed is a method for preparing such a derivative and a use of the same in the treatment of cancer, tumor diseases, and diseases caused by abnormal neovascularization in a human or non-human mammal, and a medicament or a composition containing the 5-fluorouracil derivative.

Abstract: A method for preparing IPP- and VPP-rich hydrolysate from wheat gluten protein by enzymatic hydrolysis is disclosed, comprising the following steps: (1) dissolving wheat gluten protein in an alkaline solution, and performing ultrasonic treatment; (2) adding the alkaline protease to the wheat gluten protein solution to hydrolyze; (3) adjusting the pH value of the alkaline hydrolysate to neutral or weakly acidic, and adding protease to hydrolyze, and inactivating the enzyme at a high temperature; (4) centrifuging the hydrolysate to obtain the supernatant, and ultrafiltrating with an ultrafiltration membrane; (5) decolorizing and debitterizing the permeate using a macroporous resin; (6) after the debittered and decolorized liquid is adsorbed by an ion exchange resin, eluting the ion exchange resin and drying, to obtain a powder of IPP- and VPP-rich hydrolysate. The preparation method has a high protein recovery rate, with rich IPP and VPP in the hydrolysate.

Abstract: Disclosed is a 5-fluorouracil derivative having the molecular structure shown in general formula VI, in which Ra and Rb groups are an alkoxy group or a fluorine-substituted alkoxy group having 1, 2, 3, or 4 carbon atoms, and are mono-, bis-, tri-, tetra- or penta-substituted on a phenyl group; a linking group L1 is an alkyl or alkenyl group having 1, 2, 3, or 4 carbon atoms, a linking group L2 is oxygen, or an alkyl or alkoxy group having 1, 2, 3, or 4 carbon atoms, or an amino acid, or an alkyl group having 1, 2, 3, or 4 carbon atoms containing an amino moiety, or a furyl group, and an X group is O or —NH—. Further disclosed is a method for preparing such a derivative and a use of the same in the treatment of cancer, tumor diseases, and diseases caused by abnormal neovascularization in a human or non-human mammal, and a medicament or a composition containing the 5-fluorouracil derivative.