Abstract: Disclosed are techniques for resource sharing. Resource sharing information comprising resource metadata for a shared resource of a sharer can be stored by one or more processing units. A virtual link can be generated by one or more processing units based on the resource metadata. The virtual link can be transmitted to one or more sharees by one or more processing units based on the resource metadata. The resource metadata can be updated by one or more processing units.

Abstract: The application provides a short training sequence design method and apparatus. The method includes: determining a short training sequence, where the short training sequence may be obtained based on an existing sequence, and the short training sequence with comparatively good performance may be obtained through simulation calculation, for example, by adjusting a parameter; and sending a short training field on a target channel, where the short training field is obtained by performing inverse fast Fourier transformation IFFT on the short training sequence, and a bandwidth of the target channel is greater than 160 MHz.

Abstract: A control method and device for a low-temperature cooling air valve include: obtaining an actual system pressure, an ambient temperature, and a system energy requirement; and determining an opening degree pre according to the actual system pressure, the ambient temperature, and the system energy requirement. The control method is employed to perform combined control on the low-temperature cooling air valve according to the system high pressure, the ambient temperature and the system energy requirement, and can refine the range of opening degrees of the low-temperature cooling air valve and determine an opening degree thereof, thereby facilitating cooling operation of a multi-split air conditioning system in an ultra-low temperature environment, while also increasing the reliability of the cooling operation at low temperature and expanding the operation range.

Abstract: A heat exchanger, the heat exchanger including flat tubes and fins. The flat tubes are provided at intervals along the thickness direction of the flat tubes. The flat tubes are internally provided with fluid channels extending along the longitudinal direction of the flat tubes. The fins are provided between adjacent flat tubes. A plurality of fins between adjacent flat tubes are provided at intervals along the transverse direction of the flat tubes. Each fin extends along the longitudinal direction of the flat tubes. Ventilation windows are provided on the fins.

Abstract: A purification method of a recovered aluminum melt for an automobile hub includes nitrogen degassing of a gas permeable brick pouring ladle bottom layer arranged on a lower portion of a gas permeable brick pouring ladle and argon degassing of a rotor degasser arranged on an upper portion. The invention has a good degassing and deslagging effect and high purification efficiency, and achieves energy conservation and environmental protection.

Abstract: Disclosed is a casting ladle for casting aluminum alloy in the present application. The casting ladle includes a liner contact layer, a first thermal insulation layer, a second thermal insulation layer, and a housing layer sequentially from inside to outside. The first thermal insulation layer includes first Al2O3 particles and at least one first oxide particle selected from the group consisting of first SiO2 particles, first CaO particles, and first MgO particles. The second thermal insulation layer includes at least one second oxide particle selected from the group consisting of second Al2O3 particles, second SiO2 particles, second CaO particles, and second MgO particles. The second thermal insulation layer has a porosity of 60-75% and a pore size of 2-5 mm.

Abstract: A riser tube coating for a cast aluminum alloy includes a coating-riser tube contact layer material and a coating-aluminum liquid contact layer material. The present invention has a coating protection effect to the maximum mainly by designing ratios of ZrO, Al2O3, ZnO, binders and other materials and a coat drying heat treatment process, and finally realizes effects of protecting a riser tube, being free of aluminum sticking and prolonging a service life.

Abstract: A cloud application engine deployment method for shielding the Web framework from users and apparatus, device and storage medium thereof, the method which includes: executing, by a docker, an initialization script and downloading, by the docker, an operating environment file to a first location; downloading, by the initialization script, a public framework script and a user script from the first location; specifying, by the initialization script, a second location; downloading the operating environment file to the second location; executing, by the operating environment file, the public framework script; loading, by the public framework script, the user script; registering the user script as a global handler; calling, by a caller, a Web interface; finding, by the caller, a corresponding handler, executing, by the caller, a code of the user script; and returning, from the caller, a result from the code of the user script.

Abstract: An intelligent recognition method of hyperspectral image of parasites in raw fish relates to optical detection technology, and includes step 1: obtaining a hyperspectral image of the raw fish in a wavelength range from 300 to 1100 nm; step 2: extracting a grayscale image of the hyperspectral image at a wavelength value of 437 nm, and obtaining a position range of fish meat in the grayscale image by performing a median filtering process and a binarization process on the grayscale image; step 3: extracting spectral signals of pixel points in the position range of the hyperspectral image, performing a first-order derivative process on the spectral signals, and import the spectral signals after the first-order derivative process into a preset first model, a second model, and a third model for analysis. The method can accurately distinguish the parasite body in the raw fish.

Abstract: An automatic peeling and splitting device for citrus fruits includes a bracket, a pomelo fixing module, and a pomelo peeling module arranged on the bracket. The pomelo fixing module includes a cylinder arranged on an upper part of the bracket, a fixed block arranged on a power output end of the cylinder, and a motor arranged on the fixed block, the power output end of the motor is connected with a rotation shaft, an end of the rotation shaft is sleeved with an air sac, and the end of the rotation shaft is further hinged with a plurality of arc baffles, a concave member of the arc baffle is bonded to a surface of the air sac, an outer convex edge of the arc baffle faces outside of the air sac; the rotation shaft and the power output end of the cylinder are both extended vertically downward.

Abstract: A magnetic attraction structure for a wireless charging device or a terminal device is provided, which includes one or more electromagnets. The electromagnet includes an iron core and a winding group. The iron core includes a first plate, a second plate and a connecting part. The first plate is separated from the second plate by a distance, and the connecting part is connected between the first plate and the second plate, and the winding group surrounds the connecting part. A side surface of a long side of the first plate and a side surface of a long side of the second plate are configured to face a cover plate of the wireless charging device or a cover plate of the terminal device. A wireless charging device including the above-mentioned magnetic attraction structure is also provided.

Abstract: A feature extraction method of fruit spectrum includes taking a vector of each wavelength point in spectrum of samples as source data, and acquiring a sorting of all vectors by processing the source data by SPA; according to the sorting of the vectors, acquiring distribution points of each sample on a coordinate system; acquiring classification results of the samples by destructive analysis, and acquiring a number of first sample categories; acquiring a first Euclidean distance between the first sample categories; according to a sorting of the wavelength points, acquiring distribution points of each sample on the coordinate system; acquiring a number of second sample categories; acquiring a second Euclidean distance between the second sample categories; determining whether the first Euclidean distance is less than the second Euclidean distance; determine a (M+2)-th vector to be valid or invalid based on a comparison result.

Abstract: An automatic peeling and splitting device for citrus fruits includes a bracket, a pomelo fixing module, and a pomelo peeling module arranged on the bracket. The pomelo fixing module includes a cylinder arranged on an upper part of the bracket, a fixed block arranged on a power output end of the cylinder, and a motor arranged on the fixed block, the power output end of the motor is connected with a rotation shaft, an end of the rotation shaft is sleeved with an air sac, and the end of the rotation shaft is further hinged with a plurality of arc baffles, a concave member of the arc baffle is bonded to a surface of the air sac, an outer convex edge of the arc baffle faces outside of the air sac; the rotation shaft and the power output end of the cylinder are both extended vertically downward.

Abstract: A feature extraction method of fruit spectrum includes taking a vector of each wavelength point in spectrum of samples as source data, and acquiring a sorting of all vectors by processing the source data by SPA; according to the sorting of the vectors, acquiring distribution points of each sample on a coordinate system; acquiring classification results of the samples by destructive analysis, and acquiring a number of first sample categories; acquiring a first Euclidean distance between the first sample categories; according to a sorting of the wavelength points, acquiring distribution points of each sample on the coordinate system; acquiring a number of second sample categories; acquiring a second Euclidean distance between the second sample categories; determining whether the first Euclidean distance is less than the second Euclidean distance; determine a (M+2)-th vector to be valid or invalid based on a comparison result.

Abstract: A floating observation system includes a floating platform. The floating platform includes an upper deck, upright posts, a device compartment, a ballast compartment, a radome structure and a device installation base. Top ends of the upright posts are connected to the upper deck, and bottom ends of the upright posts are connected to the device compartment. The ballast compartment is connected to the device compartment. The radome structure is borne on the upper deck. The device installation base is arranged on an outer surface of the floating platform. Various types of auxiliary devices are borne by the upper deck and the device compartment on the floating platform. Various observation devices borne by the device installation base are arranged on the outer surface of the floating platform to observe different kinds of information and to observe spaces above, on and under water, thus meeting a demand for comprehensive observation in all dimensions.

Abstract: Disclosed is a casting ladle for casting aluminum alloy in the present application. The casting ladle includes a liner contact layer, a first thermal insulation layer, a second thermal insulation layer, and a housing layer sequentially from inside to outside. The first thermal insulation layer includes first Al2O3 particles and at least one first oxide particle selected from the group consisting of first SiO2 particles, first CaO particles, and first MgO particles. The second thermal insulation layer includes at least one second oxide particle selected from the group consisting of second Al2O3 particles, second SiO2 particles, second CaO particles, and second MgO particles. The second thermal insulation layer has a porosity of 60-75% and a pore size of 2-5 mm.

Abstract: A moving part of a maglev train, comprising two levitation frames that are arranged at an interval along the direction of travel, the two levitation frames being connected by means of a vertical beam; a peripheral wall of the vertical beam provided with a slot that may reduce the torsional rigidity thereof, being capable of reducing the torsional rigidity of the traditional vertical beam so as to reduce the coupling effect between the two levitation frames that are connected by means of the vertical beam, thereby greatly reducing the difficulty and energy consumption of levitation control. The levitation frames and the train body are provided therebetween with a vertical shock absorber and a horizontal absorber having suitable damping values, the levitation frames and the train body are provided therebetween with horizontal stoppers and vertical stoppers which may prevent excessive horizontal movement, rollover and overturning.

Abstract: An ultra wide band (UWB) antenna includes: a radiator, including a waveguide cavity which has opposite open-end faces; and a feeding end, disposed on one of the open-end faces. The UWB antenna according to the present disclosure overcomes the technical problems that a horn antenna in related technologies is difficult to be applied to an integrated communication terminal due to its large size, complicated structure, and difficulties in processing.

Abstract: A heat exchanger, the heat exchanger including flat tubes and fins. The flat tubes are provided at intervals along the thickness direction of the flat tubes. The flat tubes are internally provided with fluid channels extending along the longitudinal direction of the flat tubes. The fins are provided between adjacent flat tubes. A plurality of fins between adjacent flat tubes are provided at intervals along the transverse direction of the flat tubes. Each fin extends along the longitudinal direction of the flat tubes. Ventilation windows are provided on the fins.

Abstract: Provided are a potentiometric biosensor (100) and a method for detecting urea concentration in a sample. The potentiometric biosensor (100) comprises an indication electrode (23) and a reference electrode (24). A second reaction reagent on the indication electrode (23) comprises a urease but does not comprise an electron transporter. A first reaction reagent on the reference electrode (24) comprises an electron transporter but does not comprise a urease. In the case where no external voltage is applied, after a blood sample has been added, the urease catalyzes the reaction of urea in the sample, thereby causing a potential difference between the indication electrode (23) and the reference electrode (24). Furthermore, the potential difference between the indication electrode (23) and the reference electrode (24) is in a linear relationship with the urea concentration in the sample, and the urea concentration in the sample can be calculated according to such linear relationship.