Abstract: A device and a method for nondestructively detecting a transient characteristic of a conductive screw of a turbo-generator rotor are provided. The device includes a personal computer (PC), an extremely-steep pulse generator, an ultra-high-frequency double-isolation transformer, and a pulse emitting and coupling module, which are connected in sequence. The pulse emitting and coupling module is connected to a load. A synchronous pulse receiving non-inductive divider circuit synchronously receives a characteristic waveform from the load, and the synchronous pulse receiving non-inductive divider circuit is connected to an ultra-high-speed analog/digital (A/D) module through a nonlinear saturation amplifying circuit that amplifies a signal. The PC receives a signal from the ultra-high-speed A/D module. The load includes a positive or negative excitation lead loop that is in a 180° symmetrical and instantaneous short-circuit state and a rotor shaft.

Abstract: The present invention relates to a method and system for quantitatively evaluating surface roughness of an organic pore of kerogen in shale. The method includes: making a shale sample; applying a circle of silver-painted conductive tape on the edge of the shale sample to obtain a processed sample; conducting image scanning on the processed sample to obtain a scanned image; determining a kerogen area according to the scanned image; determining an organic pore area according to the kerogen area; carrying out gridding treatment on the organic pore area to obtain multiple grid cells; adopting double integral calculation on each of the grid cells to obtain the areas of the multiple grid cells; summing each of the areas to obtain the surface area of the organic pore; and evaluating surface roughness of the organic pore according to the surface area of the pore.

Abstract: In a tower integrated by the heating and drying section and the cooling section, both sides of the heating and drying section housing are provided with an air inlet box and an air outlet box; the air inlet box is communicating with a heat exchanger and distribution pipes in the heating and drying section housing, the air outlet box is communicating with distribution pipes in the heating and drying section housing and a dust remover; both sides of the cooling section housing are provided with an air inlet box and an air outlet box; the air inlet box is communicating with a heat exchanger and distribution pipes in the cooling section housing; the air outlet box is communicating with distribution pipes in the cooling section housing and a dust remover. The integral device improves the heat exchange effect and preventing the polypropylene particles from aging.

Abstract: Provided is a production method of a high-rate lithium iron phosphate positive electrode material comprising first, weighing an iron source and a lithium source in a molar ratio of 1:1-1:1.05, then weighing 5-15% of carbon source and 0-1% of metal ion doping agent based on the total mass of the iron source and lithium source, adding water to the above weighed materials, ball milling and sand grinding the obtained slurry, so that the D50 after the sand grinding is controlled to be 100-200 nm, then spraying the mixture to obtain a precursor, putting the precursor into a sintering furnace for sintering at 650-700° C. under the protection of nitrogen gas, cooling to obtain a sintered material, then pulverizing the sintered material, sieving the pulverized material and removing iron to obtain the lithium iron phosphate. The prepared lithium iron phosphate has a good rate capability and a good cycle stability.

Abstract: Disclosed in the present disclosure is a double-deck multi-span bridge construction method. According to the double-deck bridge construction method of the present disclosure, construction is carried out by using a method of disassembling a support jig frame in a graded and span-separated mode, an upper chord jig frame and a lower chord jig frame can be used in a recycle manner, and construction costs are reduced. In addition, a construction period of building the support jig frame is shortened, and other construction operations can be synchronously carried out on a span in which the jig frame is disassembled, for example, fire retardant coating construction can be carried out on a mounted bridge deck after the jig frame is disassembled, and the construction period of a double-deck multi-span bridge is effectively shortened.

Abstract: Disclosed is a wearable article continuous in a longitudinal direction and a transverse direction comprising an elastic belt region, a crotch region, a waist opening and two leg openings; the elastic belt region is a laminate comprising an inner sheet made of nonwoven fiber, and an outer sheet made of nonwoven fiber, and a plurality of elastic bodies configured to stretch the elastic belt region in the transverse direction, the crotch region comprises an outer cover layer at the most garment facing side, the outer cover layer being the same material as the outer sheet; wherein the outer sheet has a Compression Work of more than about 550 gfmm, a Compression Average Rigidity of less than about 500 gf/mm3, a Surface Roughness Wavelength of more than about 1.7 mm, and a Glossiness of less than about 5.3, the Compression Work, the Compression Average Rigidity, the Surface Roughness Wavelength and the Glossiness according to the measurements herein.

Abstract: A fractal power converter and a method for constructing the fractal power converter, the method for constructing the fractal converter including: replacing a switch and/or an energy storage element of an asymmetric half-bridge sub-module with the same asymmetric half-bridge sub-module for at least two times, replacing a switch and/or an energy storage element of a symmetric half-bridge sub-module with the same symmetric half-bridge sub-module for at least two times, and replacing a switch and/or an energy storage element of an H-bridge sub-module with the same H-bridge sub-module for at least two times. Compared with a conventional high-voltage and large-current power converter, the fractal power converter may output any high-voltage and large-current waveform. The system is modularized, the structure is simple and extensible, and voltage and current may be evenly distributed among the modules. The control method is simple and easy to standardize. Multi-port parallel output is allowed.

Abstract: The present disclosure provides a target object tracking method. In this disclosure, the point cloud data sequence in the target scene is collected by lidars and the first frame of cloud point data is extracted; the bounding box of the target object in the first frame of cloud point data is determined using the preset three-dimensional target tracking algorithm. All the target point clouds in the bounding box are extracted to generate the first template point cloud. The template expansion processing is performed using the preset ATG algorithm to obtain the second template point cloud. The point cloud features in the search area of other frames of point cloud data are extracted, and are compared with the second template point cloud and the reference template point cloud to obtain the comparison result. Based on the comparison result, the tracking result of the target object is generated and displayed.

Abstract: A method of crowdsourcing annotation for medical image data based on image comparison, includes developing an annotation task; acquiring and verifying medical images according to requirements of the annotation task, and performing statistics on the medical images that meet verification standards to obtain an amount of image data acquired; archiving the medical images that meet the verification standards to form a medical image database; setting up annotation rules, and generating annotation schemes and annotation samples according to the requirements of the annotation task and annotation rules; distributing the medical images in the medical image database to multiple crowdsourcing annotation sides, so that each medical image being annotated by the multiple crowdsourcing annotation sides; annotating, by the crowdsourcing annotation sides, the distributed medical images according to the annotation schemes and the annotation examples to form the annotated images; and merging multiple annotated images correspondi

Abstract: The present invention concerns an aerosol generation device comprising a bracket, a printed circuit board comprising a LED and fixed on the bracket, and an outside casing delimiting an interior part of the device. The outside casing is configured to receive the bracket and comprising a side surface extending along a device axis (X) and defining a side aperture. The device further comprises —a light guide pipe defining a central cavity and configured to be received in the side aperture to extend from the LED to the side surface through the side aperture and —a pin configured to be inserted into the central cavity to lock the light guide pipe in the side aperture.

Abstract: The disclosure discloses an air sweeping mechanism and an air conditioner with the air sweeping mechanism. The air sweeping mechanism includes: a mounting portion, the mounting portion being configured to be mounted on a housing of the air conditioner; an air sweeping blade, the air sweeping blade being connected with the mounting portion; and a driving rod, the driving rod being connected with the air sweeping blade, and a position of the driving rod being adjustably disposed, wherein the air sweeping blade and the driving rod are integrally formed, at least part of the air sweeping blade is a flexible portion, and the driving rod drives the at least part of the air sweeping blade to move.

Abstract: The present invention concerns an aerosol generation device (10), comprising a bracket extending along a device axis (X), an outside casing delimiting an interior part of the device configured to receive the bracket and defining an atomizer compartment and a power block compartment, and a pressure capture assembly comprising a pressure sensor, a flexible housing configured to receive the pressure sensor and a holder configured to fix the flexible housing with the pressure sensor on the bracket. The pressure capture assembly is designed to be arranged on the bracket between the power block compartment and the atomizer compartment to prevent air passage between these compartments.

Abstract: The present invention provides a method for preparing an in-situ ternary nanoparticle-reinforced aluminum matrix composite (AMC). In this method, an in-situ reaction generation technique is used, and with a powder containing formation elements for producing reinforcing particles as a reactant, in conjunction with a low-frequency rotating magnetic field/ultrasonic field regulation technique, an aluminum-based composite material is prepared using nanoparticle intermediate alloy re-melting. An AA6016-based composite material reinforced by ternary nanoparticles has an average particle size of 65 nm, and has an obvious refinement phenomenon compared with unitary and dual-phase nanoparticles.

Abstract: A graphene and in-situ nano-ZrB2 particle-co-reinforced aluminum matrix composite (AMC) and a preparation method thereof are provided. The preparation method includes: heating an aluminum alloy for melting, adding potassium fluoroborate and potassium fluorozirconate to produce ZrB2 particles in-situ, additionally adding a mixture of pre-prepared copper-coated graphene and an aluminum powder, and stirring with an electromagnetic field for uniform dispersion; and ultrasonically treating the resulting melt to improve the dispersion of the in-situ nano-ZrB2 particles and the graphene, casting for molding to obtain a casting, and subjecting the casting to homogenization and rolling for deformation to obtain the graphene and in-situ nano-ZrB2 particle-co-reinforced AMC. The in-situ generation of the reinforcement nano-ZrB2 particles in an aluminum alloy melt increases the number of interfaces in the composite and also increases the dislocation density.

Abstract: A method for predicting a customer trust target metric includes receiving, from a business, a customer trust target metric definition defining a customer trust target metric customized by the business. The method also includes obtaining sentiment data representative of one or more interactions between a customer and the business. The sentiment data includes textual feedback data and non-textual metadata. The method also includes determining, using a natural language processing model, a sentiment score of the sentiment data. Further, the method includes predicting, using the sentiment score and the customer trust target metric definition, a respective customer trust target metric for a respective one of the one or more interactions between the customer and the business. The method also includes sending, to the business, the predicted respective customer trust target metric.

Abstract: A graphene and in-situ nano-ZrB2 particle-co-reinforced aluminum matrix composite (AMC) and a preparation method thereof are provided. The preparation method includes: heating an aluminum alloy for melting, adding potassium fluoroborate and potassium fluorozirconate to produce ZrB2 particles in-situ, additionally adding a mixture of pre-prepared copper-coated graphene and an aluminum powder, and stirring with an electromagnetic field for uniform dispersion; and ultrasonically treating the resulting melt to improve the dispersion of the in-situ nano-ZrB2 particles and the graphene, casting for molding to obtain a casting, and subjecting the casting to homogenization and rolling for deformation to obtain the graphene and in-situ nano-ZrB2 particle-co-reinforced AMC. The in-situ generation of the reinforcement nano-ZrB2 particles in an aluminum alloy melt increases the number of interfaces in the composite and also increases the dislocation density.

Abstract: Provided are a cobalt-free system, a positive electrode slurry, a slurry homogenization method therefor, and the use thereof. The cobalt-free system comprises a cobalt-free material, a binder, a conductive agent and a pH regulator. The cobalt-free system can reduce the rebound degree of the viscosity of a slurry after leaving to stand to the same degree as that of a ternary 811 single crystal, and can also improve the stability of the coating surface density of the cobalt-free material to the same level as that of a ternary material.

Abstract: Disclosed is a pant type absorbent article having a waist guard portion on the back elastic belt, wherein the waist guard portion has a specific location in view of the location from the distal edge to the proximal edge relative to the percentage of the seam length LS, the waist guard portion comprising a waist guard elastic portion having a longitudinal dimension of no greater than about 40 mm, wherein the remainder of the elastic belt superposing the waist guard elastic portion is defined a correlated portion, wherein the tensile stress of the waist guard elastic portion is higher than that of the correlated portion.

Abstract: Disclosed is a pant type absorbent article having a back elastic belt comprising a waist guard portion extending towards the crotch region from a closed base line towards an open edge, wherein the waist guard portion is formed by a first inner waist fold extending from a second inner waist fold, the second inner waist fold extending from the inner sheet, and a first elastic member bonded between the first inner waist fold and the second inner waist fold, wherein the waist guard portion is partially bonded to the remainder of the elastic belt from which the first and second inner waist folds extend to define a pocket.

Abstract: Disclosed is an absorbent article having a back elastic belt comprising a waist guard portion extending towards the crotch region from a closed base line towards an open edge, wherein the waist guard portion is partially bonded to the remainder of the back elastic belt to define a pocket.