Abstract: A flash spinning method for preparing non-woven fabrics based on microwave thermal fusion, a microwave thermal fusion device, and a non-woven fabric preparation device are provided. The flash spinning method includes: step S1, collecting filament bundles to form a non-woven fabric precursor, adding a microwave heating liquid to the non-woven fabric precursor; the microwave heating liquid being configured to absorb microwave energy and convert the microwave energy into thermal energy; and step S2, performing microwave heating on the non-woven fabric precursor containing the microwave heating liquid obtained in the step S1 to obtain a heated non-woven fabric, and performing a hot press forming treatment on the heated non-woven fabric to obtain a finished non-woven fabric. There is no temperature gradient in layers of the non-woven fabric precursor, thereby significantly improving the peeling strength of the finished non-woven fabric.

Abstract: A method for detecting abnormal direct current voltage measurement in a modular multilevel converter high voltage direct current transmission system is provided. In the method, a valve group voltage at a detection pole is obtained, voltages at voltage measurement points at the detection pole are collected, and comparison and determination are performed based on the actual arrangement of the voltage measurement points, and then whether an abnormal measurement occurs at each of the voltage measurement points is determined.

Abstract: The present invention provides an application of ?-asarone in the preparation of a medicine for preventing or treating hemorrhagic strokes. ?-asarone has the structure shown in formula I, and may significantly improve short-term neurological deficits and long-term learning and memory functions of model rats, reduce cerebral edema, improve the permeability of the blood-brain barrier, and prevent or mitigate the atrophy of brain tissue during a recovery period. ?-asarone has a precise therapeutic effect on animal models of hemorrhagic stroke without obvious toxic side effects, and is expected to have great application prospects as a medicine for preventing/treating hemorrhagic strokes.

Abstract: An image query method and apparatus, where the method may include obtaining a global feature of a query image and an attributive feature of the query image, where the attributive feature is a feature used to describe a specific attribute area in the query image, querying an image library using the global feature to obtain a first image set that includes at least one image, where an image included in the image library includes the attributive feature, selecting at least one image whose similarity of the attributive feature to the attributive feature of the query image is greater than a preset threshold from the first image set, and setting the at least one selected image as a second image set. Hence, the method may improve image query efficiency.

Abstract: An image processing method and a related device are provided to obtain a target image wherein texture of the obtained image is clearer, the image processing method includes: obtaining a visible light image and an infrared light image; obtaining first luminance information of the visible light image and second luminance information of the infrared light image; fusing the first luminance information and the second luminance information, to obtain a contrast fusion image; obtaining first texture information of the visible light image and second texture information of the infrared light image; fusing the first texture information, the second texture information, and the contrast fusion image, to obtain a texture fusion image; obtaining a color fusion image based on the visible light image and the infrared light image; and fusing the texture fusion image and the color fusion image, to obtain a target image.

Abstract: The present disclosure relates to two-dimensional antennas and network devices. One example antenna includes a reflection panel, at least two antenna arrays, at least one common feeding network, and at least two array feeding networks. The at least two antenna arrays are on the reflection panel. Each antenna array comprises at least one independent radiation unit and at least one common radiation unit. Each antenna array corresponds to an array feeding network of the at least two array feeding networks. Each independent radiation unit in each antenna array is connected to a particular array feeding network corresponding to the particular antenna array. Each common radiation unit in each antenna array is connected to the at least one common feeding network. The at least one common feeding network is connected to the at least two array feeding networks corresponding to the at least two antenna arrays.

Abstract: An image processing method and a related device are provided to obtain a target image wherein texture of the obtained image is clearer, the image processing method includes: obtaining a visible light image and an infrared light image; obtaining first luminance information of the visible light image and second luminance information of the infrared light image; fusing the first luminance information and the second luminance information, to obtain a contrast fusion image; obtaining first texture information of the visible light image and second texture information of the infrared light image; fusing the first texture information, the second texture information, and the contrast fusion image, to obtain a texture fusion image; obtaining a color fusion image based on the visible light image and the infrared light image; and fusing the texture fusion image and the color fusion image, to obtain a target image.

Abstract: The present disclosure relates to two-dimensional antennas and network devices. One example antenna includes a reflection panel, at least two antenna arrays, at least one common feeding network, and at least two array feeding networks. The at least two antenna arrays are on the reflection panel. Each antenna array comprises at least one independent radiation unit and at least one common radiation unit. Each antenna array corresponds to an array feeding network of the at least two array feeding networks. Each independent radiation unit in each antenna array is connected to a particular array feeding network corresponding to the particular antenna array. Each common radiation unit in each antenna array is connected to the at least one common feeding network. The at least one common feeding network is connected to the at least two array feeding networks corresponding to the at least two antenna arrays.

Abstract: An image query method and apparatus, where the method may include obtaining a global feature of a query image and an attributive feature of the query image, where the attributive feature is a feature used to describe a specific attribute area in the query image, querying an image library using the global feature to obtain a first image set that includes at least one image, where an image included in the image library includes the attributive feature, selecting at least one image whose similarity of the attributive feature to the attributive feature of the query image is greater than a preset threshold from the first image set, and setting the at least one selected image as a second image set. Hence, the method may improve image query efficiency.

Abstract: The invention relates to a new enantioselective process for producing useful intermediates for the manufacture of NEP inhibitors or prodrugs thereof, in particular NEP inhibitors comprising a ?-amino-?-biphenyl-?-methylalkanoic acid, or acid ester, backbone.

Abstract: The invention relates to a new enantioselective process for producing useful intermediates for the manufacture of NEP inhibitors or prodrugs thereof, in particular NEP inhibitors comprising a ?-amino-?-biphenyl-?-methylalkanoic acid, or acid ester, backbone.

Abstract: A controller for controlling the operation of a hard disk drive is capable of generating a random number using the hard disk drive. Initially the hard disk drive is disabled from performing a read-ahead operation. Random addresses on the hard disk drive are generated from the output of the pseudo-random number generator. Read-verify commands is sent to the hard disk drive to perform a read-verify operation of reading and verifying the data stored in the sectors of the hard disk drive at the random addresses without returning the data. The disk access times taken by the hard disk drive to access the sectors are measured. A deskewing process is performed on a plural number of disk access time measurements to generate a random number.

Abstract: A controller for controlling the operation of a hard disk drive is capable of generating a random number using the hard disk drive. Initially the hard disk drive is disabled from performing a read-ahead operation. Random addresses on the hard disk drive are generated from the output of the pseudo-random number generator. Read-verify commands is sent to the hard disk drive to perform a read-verify operation of reading and verifying the data stored in the sectors of the hard disk drive at the random addresses without returning the data. The disk access times taken by the hard disk drive to access the sectors are measured. A deskewing process is performed on a plural number of disk access time measurements to generate a random number.

Abstract: This invention is an electronic time constant tuning circuit that uses a frequency of a clock to tune the circuit time constant. A first transconductor is used to charge a capacitor to two different voltages, each for a separate portion of a clock period. A second transconductor is used to compare the two voltages and control them to be equal by controlling the transconductance of the first transconductor. When the two voltage are equal, the resulting transconductance and the capacitance of the capacitor form the circuit time constant. The circuit time constant can readily be changed by changing the frequency of the clock. The control signal generated by the second transconductor can be applied to other transconductors in a gm-C filter to adjust the cutoff frequency of the filter when the other transconductors have a similar structure to the first transconductor.