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: Upon determining that a first read operation on one memory cell of memory cells has failed, a second read operation on the memory cell is started. In the second read operation, a second pass voltage is applied to second word line, and a first pass voltage is applied to third word line. The second word line include one or more word lines adjacent to a selected word line, and the third word line include remaining unselected word lines. The selected word line corresponds to the memory cell to be read. The first pass voltage includes a voltage applied to the second word line in the first read operation. The second pass voltage is higher than the first pass voltage.

Abstract: A split type precisely-anchorable transcatheter aortic valve system comprises a split transcatheter aortic valve anchoring stent (10) and a transcatheter artificial biological aortic valve (20), wherein the shape and structure of the transcatheter aortic valve anchoring stent (10) are matched with the real structure of the aortic valve after the patient's image data is subjected to three-dimensional reconstruction, the transcatheter aortic valve anchoring stent (10) is delivered to the aortic valve position of the patient to be released, deformed and combined with the aortic valve leaflet tissue and the subvalvular tissue of the patient; the transcatheter artificial biological aortic valve (20) is delivered into the transcatheter aortic valve anchoring stent (10) to be released, the valve stent is deformed to expand the valve to the functional state, the transcatheter aortic valve anchoring stent (10) is deformed again and combined with the expanded transcatheter artificial biological aortic valve (20), and m

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 split type precisely-anchorable transcatheter valve-in-ring system comprises a split transcatheter valve-in-ring anchoring stent (10) and a transcatheter artificial biological valve-in-ring (20), wherein the shape and structure of the transcatheter valve-in-ring anchoring stent (10) are matched with the real structure of the annuloplasty ring and supravalvular and infravalvular tissues after three-dimensional reconstruction based on imaging data of a patient who have undergone valve failure after implantation of a annuloplasty ring (30), the transcatheter valve-in-ring anchoring stent (10) is firstly delivered to the patient's failed annuloplasty ring for release, deformation and alignment with the supravalvular and infravalvular tissues of the failed annuloplasty ring; the transcatheter artificial biological valve-in-ring (20) is delivered to the transcatheter valve-in-ring anchoring stent (10) for release, the stent of the transcatheter artificial biological valve-in-ring (20) deforms and expands to the f

Abstract: Provided are a humanized anti-A? monoclonal antibody and use thereof. The humanized anti-A? monoclonal antibody provided can inhibit the polymerization of A? monomers, protect nerve cells from the toxicity of A?, and have a certain effect on improving the cognitive learning and memory ability of Alzheimer's dementia model mice, and can be used for the treatment and diagnosis of diseases and disorders related to amyloidosis, such as Alzheimer's disease.

Abstract: An aluminum containing component comprises an aluminum alloy and an aluminum oxide layer disposed on the aluminum alloy. The aluminum oxide layer comprises crystalline aluminum oxide. The aluminum containing component is at least one of vane, a fan blade or a fan casing of a low pressure compressor section of a gas turbine. In an embodiment, a method comprises disposing an aluminum containing component in an electrochemical cell that comprises a dilute alkaline solution. The aluminum containing component is electrically contacted to become a first electrode in the electrochemical cell. The wall of the bath is electrically contacted to act as a second electrode in the electrochemical cell. A voltage is applied between the first electrode and the second electrode to form an aluminum oxide layer on the aluminum containing component.

Abstract: The present disclosure provides a method for operating a memory, a memory and a memory system, and relates to the technical field of semiconductor chip. The method includes: during the erase phase, applying an erase voltage to the word line, and applying an erase voltage to the select line coupled to a target select gate; during the program phase for select gate, applying a pass voltage to the word line, and applying a program voltage to the select line coupled to the target select gate.

Abstract: According to one aspect, a method of operating a memory is provided. The method may include applying a first power supply voltage to a common source during a program precharge process. The method may include applying a first voltage to a first bottom gate line and applying a second voltage to a second bottom gate line starting at a first moment of the program precharge process. The method may include applying a second power supply voltage to the first bottom gate line and applying a third voltage to the second bottom gate line after the first moment of the program precharge process.

Abstract: The present disclosure provides a memory device, a memory system, and an operation method of a memory device, and relates to the technical field of semiconductor chips. The memory device includes a memory cell array including a source layer, a bottom select gate layer, and a gate layer, and the bottom select gate layer is located between the source layer and the gate layer, wherein the bottom select gate layer includes a plurality of bottom select gates, and a bottom select gate of a first memory string and a bottom select gate of a second memory string are connected with a same select line; and a peripheral circuit coupled to the memory cell array, wherein the peripheral circuit is configured to apply a selection voltage to the select line to control the first memory string and the second memory string.

Abstract: Disclosed are a negative-pressure drug loading apparatus and a negative-pressure drug loading method. When the apparatus is in use, drug particles to be loaded are placed into the particle storage tube, and a proper amount of drug solution is introduced. The particle storage tube is placed in the body, and the sealing space is sealed. A vacuum pump is used to execute a negative pressure operation in the body until the inside of the particle storage tube is pumped into a vacuum. An air valve of the vacuum pump is opened, such that the drug solution comes into the said particles under the action of pressure. After the pressure is stable, the particle storage tube is let stand for a period of time such that the drug solution stably stays in the said particles.

Abstract: Upon determining that a first read operation on one memory cell of a plurality of memory cells has failed, a second read operation on the memory cell is started. In the second read operation, a second pass voltage is applied to first unselected word lines, and a first pass voltage is applied to second unselected word lines. The first unselected word lines include one or more word lines adjacent to a selected word line, and the second unselected word lines include remaining unselected word lines. The selected word line corresponds to the memory cell to be read. The first pass voltage includes a voltage applied to the first unselected word lines in the first read operation. The second pass voltage is higher than the first pass voltage.

Abstract: The split type precisely-anchorable transcatheter tricuspid valve system comprises a split transcatheter tricuspid valve anchoring stent (10) and a transcatheter artificial biological tricuspid valve (20), wherein the shape and structure of the transcatheter tricuspid valve anchoring stent (10) are matched with the tricuspid valve real structure after the patient's image data is subjected to three-dimensional reconstruction, the transcatheter tricuspid valve anchoring stent (10) is firstly delivered to the tricuspid valve site of the patient to be released, deformed and personalized and precise alignment with a supravalvular (40) and subvalvular (50) tissue of the patient's tricuspid valve site; the transcatheter artificial biological tricuspid valve (20) is delivered into the transcatheter tricuspid valve anchoring stent (10) to be released, and the transcatheter artificial biological tricuspid valve (20) is released and deformed and expanded to a functional state, the transcatheter tricuspid valve anchoring

Abstract: A split type precisely-anchorable transcatheter aortic valve system comprises a split transcatheter aortic valve anchoring stent (10) and a transcatheter artificial biological aortic valve (20), wherein the shape and structure of the transcatheter aortic valve anchoring stent (10) are matched with the real structure of the aortic valve after the patient's image data is subjected to three-dimensional reconstruction, the transcatheter aortic valve anchoring stent (10) is delivered to the aortic valve position of the patient to be released, deformed and combined with the aortic valve leaflet tissue and the subvalvular tissue of the patient; the transcatheter artificial biological aortic valve (20) is delivered into the transcatheter aortic valve anchoring stent (10) to be released, the valve stent is deformed to expand the valve to the functional state, the transcatheter aortic valve anchoring stent (10) is deformed again and combined with the expanded transcatheter artificial biological aortic valve (20), and m

Abstract: The disclosure provides a programming method of a memory, a memory and a memory system, which relate to the technical field of semiconductor chips. The programming method comprises: applying a program voltage to a first word line coupled to a plurality of memory cells of a first memory cell slice and a plurality of memory cells of a second memory cell slice; and during a stage of applying the program voltage to the first word line, applying a turn-on voltage to a first select line and a second select line sequentially, wherein the first select line is coupled to a select transistor of the first memory cell slice, and the second select line is coupled to a select transistor of the second memory cell slice.

Abstract: The present application discloses a memory, a memory system, and a method for operating memory, which belongs to the memory techniques field. The method for operating memory comprises determining a storage state of a reference memory cell, determining a discharge duration of a sensing node corresponding to a target memory cell based on the storage state of the reference memory cell, and reading the target memory cell based on the discharge duration of the sensing node corresponding to the target memory cell to obtain read results. The target memory cell and the reference memory cell are located in the same string and are adjacent, and the programming order of the reference memory cell is after that of the target memory cell. The present application may reduce the influence on reading memory cells by interlayer interference and improve the accuracy of reading memory cells.

Abstract: Hybrid cores including adhesive promotion layers and related methods are disclosed. An example substrate core for an integrated circuit disclosed herein includes a frame including interior edge, a glass panel including an exterior edge, and an adhesion promotion layer disposed between the interior edge and the exterior edge.

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: Systems, methods and media of optimization of temporary read errors (TRE) in three-dimensional (3D) NAND memory devices are disclosed. A disclosed memory device can comprises a plurality of memory cells arranged as an array of NAND memory strings, a plurality of word lines couple to the memory cells, and a controller. The controller is configured to determine whether a next read operation is a first read operation of the memory device after recovering from an idle state, and In response to a positive result of the determination, control the memory device to perform an extended pre-phase of the first read operation before a read-phase of the first read operation.

Abstract: A BMOFs nanosheet based on a ZIF/MIL topology, and a preparation method and an application thereof are provided. The preparation method includes dispersing a MOF material of a ZIFs series in an organic phase, then adding an aqueous phase to obtain a mixture; and adding a MOF material of a MILs series into the mixture, sealing, standing for 1-5 days, filtering, performing centrifugal washing, drying, and performing acetone ultrasonic exfoliation to obtain the BMOFs nanosheet based on the ZIF/MIL topology. The preparation method is simple to operate and moderate in conditions, and the prepared ZIF/MIL BMOFs nanosheet has good electrocatalytic activity and stability in an OER.