Abstract: According to an image processing method and system for improving three-dimensional display effect of blood vessels provided by the present invention, the image processing method comprises the following steps: design an interpolation algorithm to preprocess the original data to obtain a preprocessed image based on the original image volume data before projection; determine the blood vessel trend according to the preprocessed image, eliminate isolated points, and perform image smoothing processing on the blood vessel trend to obtain a smooth image; and process the smooth image by a nonlinear change method to perform nonlinear enhanced display of blood vessels and suppress the background. And improve the display effect of blood vessel signals.

Abstract: According to an image processing method and system for improving three-dimensional display effect of blood vessels provided by the present invention, the image processing method comprises the following steps: design an interpolation algorithm to preprocess the original data to obtain a preprocessed image based on the original image volume data before projection; determine the blood vessel trend according to the preprocessed image, eliminate isolated points, and perform image smoothing processing on the blood vessel trend to obtain a smooth image; and process the smooth image by a nonlinear change method to perform nonlinear enhanced display of blood vessels and suppress the background. And improve the display effect of blood vessel signals.

Abstract: The disclosure provides a preparation method of GaN field effect transistor based on diamond substrate, and relates to the technical field of semiconductor manufacturing. The method includes the following steps: preparing a GaN heterojunction layer on the front-side of a SiC substrate; thinning the SiC substrate; etching the SiC substrate; growing a diamond layer; removing a sacrificial layer and the diamond layer on the sacrificial layer; preparing a source electrode, a drain electrode and a gate electrode on the front surface of the GaN heterojunction layer; etching the SiC substrate and the GaN heterojunction layer to form a source through hole communicated with the source electrode; and removing the through hole mask layer, and preparing back grounding metal to complete the preparation of the diamond substrate GaN transistor device.

Abstract: A preparation method of a heat-not-burn cigarette paper with boron nitride as a thermally-conductive filler includes: mixing potassium oleate, polyvinyl alcohol (PVA) and water, thoroughly stirring under an ultrasonic condition, aging, and filtering until there is no precipitate; thoroughly mixing a resulting mixed solution with a softwood pulp and a hardwood pulp to obtain a coarse pulp; and under stirring, adding boron nitride and calcium carbonate as a filler to the coarse pulp, heating to 60° C., and stirring for thorough mixing to obtain a pulp for sizing and papermaking. The present disclosure effectively improves the stability of a cigarette paper by improving a coefficient of thermal conductivity of the paper. Boron nitride, when used as a thermally-conductive filler in a thin-walled or paper product, enables high heat removal capacity. The preparation method retains the original whiteness and transparency of the cigarette paper, and provides high conductivity.

Abstract: A computer-implemented method for detecting attribute value pairs from corpus data using a computer comprising a processor and a computer readable medium comprising instructions executable by the processor to at least: receive the corpus data comprising at least one pair; detect a layout template of the at least one pair; measure the merit of the layout template by determining at least one of (a) relative magnitudes of content probabilities based on a probability of the contents of an attribute cell and a probability of a corresponding value cell, (b) the validity of a name-value pair, or (c) the pointwise mutual information of a frequency matrix M corresponding to a sparse vector capturing context information of a word; and output detected attribute value pairs.

Abstract: Clean version of the Abstract A preparation method of a heat-not-burn cigarette paper with boron nitride as a thermally-conductive filler incl tides: mixing po .ssiuxr oleate, polyvinyl alcohol (PVA) and water, thoroughly stirring under an ultrasonic condition, aging, and filtering until there is no precipitate; thoroughly mixing a resulting mixed solution with a softwood pulp and a hardwood. pulp to obtain a coarse pulp; and under stirring, adding boron nitride and calcium carbonate as a filler to the coarse pulp, heating to 60° C., and stirring for thorough mixing to obtain a pulp for sizing and papermaking. The present disclosure effectively improves the stability of a cigarette paper by improving a coefficient of thermal conductivity of the paper. Boron nitride, when used as a thermally-conductive filler in a thin-walled or paper product, enables high heat removal capacity. The preparation method retains the original whiteness and transparency of the cigarette paper, and provides high conductivity.

Abstract: A system for regulating online merchandise link activity. The system may comprise a memory storing instructions and at least one processor configured to execute the instructions. The instructions may comprise: maintaining a set of items for online link processing, the items being associated with a website; selecting a first item from the set of items; receiving an electronic request from a first affiliate system related to the first item; registering the first affiliate system as associated with the first item; generating an online link associated with the first item and the registered affiliate system; detecting an actuation of the online link, the actuation being associated with digital activity; and, based on the detected actuation and digital activity, permitting or denying the first affiliate system from operating the online link.

Abstract: The disclosure provides a preparation method of GaN field effect transistor based on diamond substrate, and relates to the technical field of semiconductor manufacturing. The method includes the following steps: preparing a GaN heterojunction layer on the front-side of a SiC substrate; thinning the SiC substrate; etching the SiC substrate; growing a diamond layer; removing a sacrificial layer and the diamond layer on the sacrificial layer; preparing a source electrode, a drain electrode and a gate electrode on the front surface of the GaN heterojunction layer; etching the SiC substrate and the GaN heterojunction layer to form a source through hole communicated with the source electrode; and removing the through hole mask layer, and preparing back grounding metal to complete the preparation of the diamond substrate GaN transistor device.

Abstract: A system for regulating online merchandise link activity. The system may comprise a memory storing instructions and at least one processor configured to execute the instructions. The instructions may comprise: maintaining a set of items for online link processing, the items being associated with a website; selecting a first item from the set of items; receiving an electronic request from a first affiliate system related to the first item; registering the first affiliate system as associated with the first item; generating an online link associated with the first item and the registered affiliate system; detecting an actuation of the online link, the actuation being associated with digital activity; and, based on the detected actuation and digital activity, permitting or denying the first affiliate system from operating the online link.

Abstract: A system for regulating online merchandise link activity. The system may comprise a memory storing instructions and at least one processor configured to execute the instructions. The instructions may comprise: maintaining a set of items for online link processing, the items being associated with a website; selecting a first item from the set of items; receiving an electronic request from a first affiliate system related to the first item; registering the first affiliate system as associated with the first item; generating an online link associated with the first item and the registered affiliate system; detecting an actuation of the online link, the actuation being associated with digital activity; and, based on the detected actuation and digital activity, permitting or denying the first affiliate system from operating the online link.

Abstract: A magnetic resonance imaging (MRI) method is provided. The method includes: a first echo signal and a second echo signal generated from each of channels of a MRI device are acquired by performing a pre-scanning according to an imaging sequence; a correction displacement with which an imaging phase consistency is maximum is determined by shifting a signal curve of the second echo signal for each of the channels for a plurality of times; a one-order phase correction value and a zero-order phase correction value for the channels are determined under the imaging sequence according to the correction displacement; a formal scanning is performed according to the imaging sequence to obtain scanning data; and a phase correction is performed on the scanning data according to the one-order phase correction value and the zero-order phase correction value to obtain target scanning data for reconstructing an image.

Abstract: An enhanced HFET, comprising a HFET device body.

Abstract: Methods, devices and apparatus for reconstructing a magnetic resonance image are provided. In one aspect, a method includes: determining array coil images according to first data collected by array coils of an MRI device during a prescan, where each coil of the array coils corresponds to a respective one of channels; determining a quadrature body coil image according to at least one of second data collected by a quadrature body coil of the MRI device during the prescan and the first data collected by the array coils; obtaining a corrected quadrature body coil image by correcting an uniformity of the quadrature body coil image; determining coil sensitivity maps according to the array coil images and the corrected quadrature body coil image; and reconstructing a magnetic resonance image with third data collected by the array coils during a normal scan according to the coil sensitivity maps.

Abstract: An enhanced HFET, comprising a HFET device body.

Abstract: The current invention belongs to the technical fields of fine chemicals and related chemistry, and provides a preparation method for butadiene derivatives. Arylacetylenes and derivatives using as raw materials react in an anhydrous organic solvent in the presence of a metal catalyst and an additive, and are converted into 2,3-disubstituted-1,3-butadiene derivatives. The current invention has some beneficial characteristics such as cheap and readily available raw material, mild reaction conditions, environmentally friendly property and possibility of realizing industrialization, and obtains the 1,3-butadiene derivatives in high yields. The 1,3-butadiene derivatives synthesized by this method can be further functionalized into various compounds which have potential applications in development and research of natural products, functional materials and fine chemicals.

Abstract: Methods, devices and apparatus for reconstructing a magnetic resonance image are provided. In one aspect, a method includes: determining array coil images according to first data collected by array coils of an MRI device during a prescan, where each coil of the array coils corresponds to a respective one of channels; determining a quadrature body coil image according to at least one of second data collected by a quadrature body coil of the MRI device during the prescan and the first data collected by the array coils; obtaining a corrected quadrature body coil image by correcting an uniformity of the quadrature body coil image; determining coil sensitivity maps according to the array coil images and the corrected quadrature body coil image; and reconstructing a magnetic resonance image with third data collected by the array coils during a normal scan according to the coil sensitivity maps.

Abstract: In an example, a method and apparatus for obtaining an image mask is provided. After a magnitude image and a phase image of a to-be-processed image is obtained, magnitude coherent data of each pixel point in the magnitude image and phase coherent data of each pixel point in the phase image may be calculated. Then, a binarization threshold processing may be performed on the magnitude coherent data of each pixel point in the magnitude image to obtain a magnitude image mask. A binarization threshold processing may be performed on the phase coherent data of each pixel point in the phase image to obtain a phase image mask. In this way, an image mask of the to-be-processed image may be obtained by using the magnitude image mask and the phase image mask.

Abstract: Methods and apparatus, including computer programs encoded on a computer storage medium, for image reconstruction are provided. According to an example of the methods, an image reconstruction may be performed to generate a first set of reconstructed data with a first set of projection data comprising a plurality of first projection data each corresponding to a respective projection angle of a plurality of projection angles. A second set of projection data comprising second projection data for each projection angle may be generated with the first set of reconstructed data. The first set of projection data may be corrected based on a shifting distance between the first projection data and the second projection data for each projection angle. Then, a second set of reconstructed data may be generated with the corrected first set of projection data, and a reconstructed image may be generated according to the second set of reconstructed data.

Abstract: Methods and apparatus, including computer programs encoded on a computer storage medium, for image reconstruction are provided. The methods include: accessing a first set of projection data including a plurality of first projection data each corresponding to a respective projection angle of a plurality of projection angles, generating a first set of reconstructed data by image reconstruction with the first set of projection data, generating a second set of projection data comprising a plurality of second projection data each corresponding to a respective projection angle by projection calculation with the first set of reconstructed data, generating a third set of projection data by optimizing the first set of projection data based on a correlation between respective first projection data and respective second projection data corresponding to each projection angle, and generating a second set of reconstructed data by image reconstruction with the third set of projection data.

Abstract: A method of processing Magnetic Resonance Imaging (MRI) data is provided. According to an example of the method, after a set of MRI data of a subject is obtained by an MRI system, interpolation may be performed on real parts and imaginary parts of the set of MRI data, respectively, to obtain real part interpolation results and imaginary part interpolation results. Interpolation is performed on amplitudes of the set of MRI data to obtain amplitude interpolation results. Target interpolation results are determined with the real part interpolation results, the imaginary part interpolation results and the amplitude interpolation results. Then, an MRI image of the subject is reconstructed with the target interpolation results.