Abstract: The present disclosure relates to the technology field of acoustic product. Disclosed are a diaphragm for miniature sound generation device and a miniature sound generation device. The diaphragm includes a rubber film layer formed by cross-linking reaction of an acrylate polymer, wherein the acrylate polymer contains carboxylic acid group, the cross-linking agent is an amine cross-linking agent. The present disclosure effectively improves the degree of cross-linking by using the acrylate polymer containing carboxylic acid group and the amine cross-linking agent, resulting in excellent resilience and temperature resistance of the diaphragm; At the same time, it allows the diaphragm forming method to be unrestricted and reduces preparation cost; It also improves the low-frequency performance of the miniature sound generation device, such that it has a full bass and a comfortable listening experience.

Abstract: Disclosed in the present disclosure are a dome and a diaphragm assembly for a sound producing apparatus, a sound producing apparatus, and an electronic device. The dome comprises an organic aerogel matrix and a reinforcing material dispersed in the organic aerogel matrix. The mass of the organic aerogel matrix accounts for 10% to 95% of the total mass of the dome, and the modulus density ratio of the dome is greater than or equal to 5 GPa·cm3/g. According to the present disclosure, the dome has a light weight, and thus facilitates meeting the design requirements of lightening, thinning and miniaturization of the sound producing apparatus, and can also reduce the resonance frequency of the sound producing apparatus and improve the medium-frequency sensitivity thereof.

Abstract: Provided is a series of enzyme for synthesizing glabridin, a method for biosynthesizing glabridin, and an engineered biological host. The series of enzymes for synthesizing glabridin derived from Glycyrrhiza glabra, including a 4?-O-methyltransferase, an isoflavone 2?-hydroxylase, an isoflavone reductase, a vestitone reductase, a prenyltransferase, a pterocarpan reductase, an oxidative cyclase, and a demethylase, which are first disclosed, exhibit respective activities in various biological hosts.

Abstract: The present disclosure provides a sound absorption material, a sound producing device, and an electronic equipment. The sound absorption material comprises zeolite powder particles and inorganic adhesive; the zeolite powder particles have an average particle size>10 ?m, and a silicon-to-aluminum mass ratio<200; the inorganic adhesive is used to bind a plurality of zeolite powder particles into the sound absorption material 1, and the sound absorption material has a crushing resistance in a range of 0.1N to 5N.

Abstract: A multi-way valve adapted to control a flow of fluid to different thermal fluid circuits includes a valve housing, a valve flow controller, and a sealing system. The valve flow controller is arranged in the valve housing to control flow through the valve housing. The sealing system is configured to seal between the valve housing and the valve flow controller.

Abstract: Disclosed in the present disclosure are a vertical-height gauge and a measuring method, relating to the field of surveying and mapping tools, and including a measuring plate, a support fixing plate, a plumb, a steel tape and a plumb rope. The measuring plate includes a reference plate, an auxiliary reference plate and a reference ruler; the support fixing plate includes a fixing base plate, two racks are oppositely arranged on a side surface of the fixing base plate, a slide plate is arranged between the two racks, a first gear meshing with the single rack and rotating is arranged on two sides of the slide plate separately, a control assembly is arranged on the slide plate, and the control assembly is configured to control a rotating state of the first gears; and the reference plate is perpendicularly connected to the slide plate.

Abstract: A housing of a sound generating device, the sound generating device and an electronic apparatus are provided. At least a part of the housing of the sound generating device is formed as a supporting part, at least a part of the supporting part is made of organic aerogel material, the organic aerogel material has a mesh structure on which reinforcement material is distributed, the reinforcement material accounts for 0 wt % to 40 wt % of the supporting part, and a specific modulus of the supporting part is 1.5 GPa·cm3/g to 40 GPa·cm3/g. At least part of the housing of the sound generating device is formed as the supporting part, the supporting part including organic aerogel material with a mesh structure and reinforcement material disposed on the mesh structure. Thus, the housing of the sound generating device has advantages of high strength, light weight and strong applicability.

Abstract: Disclosed are a diaphragm for a miniature sound-generating device, wherein the diaphragm is made of a polyacrylate copolymer, a reinforcing agent is mixed in the polyacrylate copolymer, the polyacrylate copolymer is 100 parts by mass, and the reinforcing agent comprises at least one of carbon black, silicon dioxide, calcium carbonate and barium sulphate, and is 1-90 parts by mass. The diaphragm provided in the disclosure possesses excellent sound performance.

Abstract: The present disclosure provides a current measurement device. In the device, a first control circuit is connected to a broadband current measurement probe, a quantum current measurement probe includes a magnetic core, a coil provided on the magnetic core, a quantum current measurement member provided in an air gap of the magnetic core, the first control circuit is connected to the coil and the quantum current measurement member respectively; the broadband current measurement probe is configured to obtain a broadband current signal; the first control circuit is configured to determine a coil current value and a regulation microwave frequency according to the broadband current signal, circulate a coil current into the coil according to the coil current value, and control a microwave frequency at which the quantum current measurement member operates according to the regulation microwave frequency; the quantum current measurement member is configured to obtain a measured current value.

Abstract: The present disclosure relates to the field of sensor technology, particularly to a non-intrusive passive wireless self-energizing quantum current sensor comprising: a self-energizing module and a quantum current sensor module; the self-energizing module is configured to collect an environmental energy of an environment where a measured device is located, and convert the environmental energy into an electric energy, to supply power to the quantum current sensor module with the converted electric energy, wherein the environmental energy comprises at least one of an electric energy, an optical energy, or a magnetic energy; and the quantum current sensor module is configured to sense a current signal of the measured device when it is detected that the measured device generates a magnetic field.

Abstract: Protein complexes and associated methods are described herein for proximity-based labeling of various intracellular or intercellular microenvironments. In some embodiments, a protein complex comprises a protein substrate having an ubiquitin E3 ligase associated therewith, wherein a transition metal complex is coupled to the protein substrate. In some embodiments, one or more intermediate molecular species, such as a small molecule and/or protein, reside between the ubiquitin E3 ligase and protein substrate.

Abstract: Systems and methods for eliminating bias in machine learning systems are disclosed. The system includes a bias detection/correction computer system that executes a model bias detection and correction software engine. The model bias detection and correction software engine selects and executes an existing ML/AI model, and receives and processes the model output to detect representation bias using a first detection algorithm and accuracy bias using a second detection algorithm. The engine then calculates a score correction value which is based on the detection results of the first and second detection algorithms, and corrects output of the model using the score correction value. Optionally, the score correction value could be utilized for re-training of the model in order to reduce or eliminate bias in future usage of the model.

Abstract: A multi-way valve adapted to control a flow of fluid to different thermal fluid circuits includes a valve housing, a valve flow controller, and a scaling system. The valve flow controller is arranged in the valve housing to control flow through the valve housing. The scaling system is configured to seal between the valve housing and the valve flow controller.

Abstract: The present disclosure provides a slope reinforcing and protecting device for hydraulic engineering. The device includes a connecting base body, where an upper end of the connecting base body is fixedly connected to a protection assembly, and a fastening assembly is arranged in the protection assembly for supporting. A protection net is connected around an outer side of the connecting base body.

Abstract: An apparatus comprising a decoupler for releasing an antitheft device from a product to which the antitheft device is attached. The decoupler comprises a core, an annular magnet assembly, a nonmagnetic plate, and a permanently magnetic ring. The core comprises a permanently magnetic first core portion and a soft magnetic second core portion coaxial with the first core portion. The annular magnet assembly comprises a plurality of permanently magnetic segments collectively surrounding outer peripheries of the first and second core portions. The nonmagnetic plate abuts coplanar surfaces of the magnet assembly segments and the second core portion. The permanently magnetic ring abuts the nonmagnetic plate opposite the magnet assembly.

Abstract: Disclosed is a method for determining a skill field of a dialogue text including determining a skill field hit by a dialogue text input by a user, and a name semantic slot and a character semantic slot in the skill field; when the dialogue text hits a first skill field, determining whether the name semantic slot and the character semantic slot match according to a knowledge base of the first skill field; determining, if not matched, whether the name semantic slot and the character semantic slot match according to a knowledge base of a second skill field; and determining, if matched, the second skill field as the skill field of the dialogue text. Also provided is an apparatus for determining a skill field of a dialogue text. The error rate of field classification is reduced, and the skill field can be hit by the user's voice dialogue more accurately.

Abstract: An electronic pull-out faucet including a faucet body, a pull-out hose, a water outlet, a control box, a travel switch and a mechanical pressing mechanism. The pull-out hose movably penetrates through the pull-out channel. Two ends of the pull-out hose connect to the water outlet and the control box respectively. The travel switch controls whether the control box discharges water or not. The mechanical pressing mechanism movably presses the travel switch with the movement of the pull-out hose. The electronic pull-out faucet can automatically discharge water when the pull-out hose is pulled out, which is convenient to use.

Abstract: The present invention relates to a diaphragm for sound generating devices and a preparation method thereof, and a sound generating device. The diaphragm for sound generating devices comprises only one layer of a thermoplastic polyester elastomer film, wherein the thermoplastic polyester elastomer is formed by copolymerization of a polyester hard segment which is prepared by reacting an aromatic dicarboxylic acid with a dihydric alcohol and a soft segment containing an aliphatic polycarbonate, and the diaphragm has a thickness of 10-200 ?m , and a loss factor of 0.1-0.3 at a temperature of 23° C. The thermoplastic polyester elastomer used for the diaphragm of the present invention is composed of the polyester hard segment and the aliphatic polycarbonate soft segment, and such material not only solves the problem that the existing thermoplastic elastomers have poor resistances to high temperatures and chemicals, but also has the advantages of improving sensitivity etc.