Abstract: The present invention discloses a one-way limiting expandable artificial heart valve which comprises a valve seat (1), a valve leaflet stent (2) and three valve leaflets (3) wherein the valve seat (1) comprises a one-way limiting expandable annular metal seat (4), the annular metal seat (4) is composed of three sections of seat body units (5), the head end of each section of seat body unit (5) is sequentially provided with a first rivet (8), a limiting protrusion (7) and a first long circular groove (6), the tail end of each section of seat body unit (5) is sequentially provided with a second long circular groove (9), a second limiting hole (11) and a first limiting hole (10), and a second rivet (12), and the artificial heart valve has a normal use original state and a one-way limiting expansion state.

Abstract: The present disclosure discloses a method and system for designing a solution heat-treatment process of a single-crystal superalloy, and relates to the field of numerical simulation-material processing crossover techniques.

Abstract: A method includes: displaying a physical environment of a user through the display generation component; generating at least one second object on a first object in the physical environment in response to a preset processing flow; detecting, through the eye tracking device, that a gaze of the user points to a target second object of the second objects to generate a visual indication object; detecting a hand gesture of the user through the gesture detection device, and controlling the target second object based on the hand gesture and the visual indication object; and determining attribute information of the target second object in a case that a demand of the user is satisfied by adjusting a fitting degree between the target second object and the first object based on the hand gesture.

Abstract: Techniques, systems and apparatus are described for magnetic resonance imaging. A method includes generating an MRI image by processing a first image obtained by applying a first order of modules including at least a first control module at a first time point and a first labeling module at a second time point to a target object, wherein the first control module inverts a magnetization of the target object and a second image obtained by applying a second order of modules including at least a second labeling module at a third time and a second control module at a fourth time to the target object, wherein the second labeling module inverts the magnetization of the target object.

Abstract: A method includes: The receive end receives 2N channels of signals through N first antennas, where the 2N channels of signals are respectively from N second antennas of the transmit end. When transmission performance of any one of the 2N channels of signals is less than a first threshold, the receive end respectively receives, from two second antennas, two channels of signals whose polarization directions are orthogonal. When transmission performance of the two channels of signals is both greater than a second threshold, the receive end receives the 2N channels of signals through the N first antennas.

Abstract: Disclosed are a method, an apparatus, a device, and a medium for image recognition via wireless federated learning. The method for image recognition via wireless federated learning includes: obtaining an image to be recognized and an initial image recognition model; adjusting parameters for the initial image recognition model via a preset accelerated mobile federated learning algorithm according to a target momentum factor to obtain a target image recognition model; and recognizing the image to be recognized through the target image recognition model to obtain text information corresponding to the image to be recognized.

Abstract: Techniques, systems and apparatus are described for magnetic resonance imaging. A method includes generating an MRI image by processing a first image obtained by applying a first order of modules including at least a first control module at a first time point and a first labeling module at a second time point to a target object, wherein the first control module inverts a magnetization of the target object and a second image obtained by applying a second order of modules including at least a second labeling module at a third time and a second control module at a fourth time to the target object, wherein the second labeling module inverts the magnetization of the target object.

Abstract: The disclosure provides a controlling method and apparatus based on extended reality, an electronic device, and a storage medium. The controlling method based on extended reality includes: determining a first audio in a real space in response to a first operation event of a current user; determining a first position in an extended reality space in response to a second operation event of the current user; and playing the first audio by taking the first position as a sound source position of the first audio in the extended reality space.

Abstract: A split type precisely-anchorable transcatheter mitral valve system comprises a split transcatheter mitral valve anchoring stent (10) and a transcatheter artificial biological mitral valve (20), wherein the shape and structure of the transcatheter mitral valve anchoring stent (10) are matched with the mitral valve real structure after the patient image data is subjected to three-dimensional reconstruction, the transcatheter mitral valve anchoring stent (10) is firstly delivered to the mitral valve position of the patient to be released and deformed, and the transcatheter artificial biological mitral valve (20) is in personalized precise alignment and coaptation with tissues on the mitral valve position of the patient and under the petals; the transcatheter artificial biological mitral valve (20) is delivered into the transcatheter mitral valve anchoring stent (10) to be released, the transcatheter artificial biological mitral valve (20) is released and deformed and expanded to a functional state, the transcat

Abstract: A transistor device according to some embodiments includes a semiconductor barrier layer, a surface dielectric layer on the semiconductor barrier layer, and a gate on the surface dielectric layer. The surface dielectric layer includes an aperture therein that is laterally spaced apart from the gate. The device includes an interlayer dielectric layer on the surface dielectric layer that extends over the gate and into the aperture in the surface dielectric layer, and a multiple-stepped field plate on the interlayer dielectric layer. The multiple-stepped field plate is laterally spaced apart from the gate. A recessed portion of the multiple-stepped field plate is above the aperture in the surface dielectric layer, and the multiple-stepped field plate includes a first step adjacent the recessed portion of the field plate on a side of the field plate opposite the gate, and a second step adjacent the first step.

Abstract: A device and method for regulating the release of adenosine in an organism, and the use thereof. The device comprises a stimulus generator for generating stimuli of a specific frequency. The use of the device of the present invention in an organism can effectively increase the concentration of adenosine in the brain of the organism, thereby providing an effective strategy for the improvement of sleep disorders.

Abstract: A memory device includes a bit line group having a first bit line and a second bit line. The bit line group includes a first segment, a second segment, and a twist segment conductively connected to the first segment and the second segment. The first segment includes a first portion of the first bit line and a first portion of the second bit line. The second segment includes a second portion of the first bit line and a second portion of the second bit line. The twist segment includes a third portion of the first bit line and a third portion of the second bit line. The first and second portions of the first bit line and the second bit line each extends in a first lateral direction. The third portion of the first bit line is conductively connected to the first and second portions of the first bit line.

Abstract: A method of operating a magnetic resonance imaging (MRI) system includes configuring the system to receive an input indicative of time intervals to be used for imaging a target object; controlling the one or more RF coils to apply a first order of modules including at least a first control module at a first time point and a first labeling module at a second time point to a target object, controlling the one or more RF coils to operate a second order of modules including at least a second labeling module at a third time point and a second control module at a fourth time point to the target object, wherein all the four modules invert the magnetization of the target object to suppress the MRI signal.

Abstract: A broad-spectrum disease resistance-related protein derived from wheat and related biomaterials and use thereof are provided. The protein is selected from the group consisting of A1) a protein with the amino acid sequence of SEQ ID NO: 1; A2) a protein having more than 80% identity to, having a same function as the protein with the amino acid sequence of SEQ ID NO: 1, and obtained by substitutions and/or deletions and/or additions of amino acid residues thereof; and A3) a fusion protein with a same function obtained by joining a tag at N-terminus and/or C-terminus of A1) or A2). The TaCNGC5.1 overexpression lines showed significantly improved disease resistance, thus suggesting that TaCNGC5.1 may play an important role in breeding plants with improved resistance to stripe rust.

Abstract: Techniques, systems and apparatus are described for magnetic resonance imaging. A method includes applying a radio frequency (RF) signal of a predetermined time duration towards a target, wherein the RF signal comprises a composite pulse that includes a velocity-selective pulse comprising RF pulses whose phase shift is modulated over the predetermined time duration, acquiring a magnetic resonance signal from the target resulting from the application of the RF signal, and generating an MRI image of the target from the magnetic resonance signal.

Abstract: Encoding environmental parameters by modulating swarm patterns of bacteria on substrates and correlating spatiotemporal changes in the environmental parameters to changes in swarm patterns using one or more trained machine learning models.

Abstract: This invention provides novel azido linkers for deoxynucleotide analogues having a detectable marker attached thereto.

Abstract: An exemplary system, method, and computer-accessible medium for detection of functional disorder(s) or aging progression of patient(s) can be provided which can include, for example, receiving magnetic resonance imaging (MRI) information of the portion(s), generating gadolinium (“Gd”) enhanced map(s) based on the MRI information using a machine learning procedure(s), and detecting the functional disorder(s) or aging progression of the patient(s) based on the Gd enhanced map(s). The Gd enhanced map(s) can be a full dosage Gd enhanced map which can be a full dosage Gd enhanced cerebral blood volume map(s). The machine learning procedure can be a convolutional neural network. The MRI information can include (i) a low-dosage Gd MRI scan(s), and/or (ii) a Gd-free MRI scan(s). Functional disorder(s) or age progression can include a neurodegenerative disease, a neuropsychiatric disease, a neurodevelopment disorder or aging.

Abstract: Semiconductor devices with reduced contact resistance of ohmic contacts are provided. In one example, the semiconductor device includes a Group III-nitride semiconductor structure. The Group III-nitride semiconductor structure includes a channel layer and a barrier layer on the channel layer. The semiconductor device includes an implanted region extending into the channel layer. The implanted region includes a distribution of implanted dopants. The semiconductor device includes a recess in the implanted region. The recess extends through the barrier layer into the channel layer. The semiconductor device includes an ohmic contact within the recess.

Abstract: Transistor devices having metal structures with rounded corners are provided. In one example, The transistor device includes a Group III-nitride semiconductor structure. The transistor device includes a gate contact and/or a field plate on the Group III-nitride semiconductor structure. One or more of the gate contact or the field plate includes at least one rounded corner.