Abstract: A matrix calculation device including a storing unit, a multiply accumulate (MAC) circuit, a pre-fetch circuit, and a control circuit, and an operation method thereof are provided. The storing unit stores a first and second matrixes. The MAC circuit is configured to execute MAC calculation. The pre-fetch circuit pre-fetches at least one column of the first matrix from the storing unit to act as pre-fetch data, pre-fetches at least one row of the second matrix from the storing unit to act as the pre-fetch data, or pre-fetches at least one column of the first matrix and at least one row of the second matrix from the storing unit to act as the pre-fetch data. The control circuit decides whether to perform the MAC calculation on a current column of the first matrix and a current row of the second matrix through the MAC circuit according to the pre-fetch data.

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 device including a gate stack over a semiconductor substrate having a pair of spacers abutting sidewalls of the gate stack. A recess is formed in the semiconductor substrate adjacent the gate stack. The recess has a first profile having substantially vertical sidewalls and a second profile contiguous with and below the first profile. The first and second profiles provide a bottle-neck shaped profile of the recess in the semiconductor substrate, the second profile having a greater width within the semiconductor substrate than the first profile. The recess is filled with a semiconductor material. A pair of spacers are disposed overly the semiconductor substrate adjacent the recess.

Abstract: The disclosure provides a method for preparing an electrode film layer on a surface of a solar cell substrate. The method includes: a) obtaining a metal electrode material melt by heating and melting a metal electrode material under a vacuum condition; b) bombarding the metal electrode material melt with an ion source at low energy, so that it is sputtered and deposited on the surface of the solar cell substrate to form the electrode film layer; in which the energy of low energy bombarding is 30 eV to 80 eV.

Abstract: An electronic system includes a main chip, a non-volatile storage circuit, and a detector circuit. The main chip is configured to read first time of a clock circuit. The non-volatile storage circuit is coupled to the main chip. The main chip stores the first time into the non-volatile storage circuit. The detector circuit includes a first output terminal. The first output terminal is coupled to the main chip. When a cold boot event occurs, the main chip reads the first time from the non-volatile storage circuit, and determines a reason of the cold boot event according to the first time, a second time of the clock circuit, and a logic value at the first output terminal.

Abstract: A device including a gate stack over a semiconductor substrate having a pair of spacers abutting sidewalls of the gate stack. A recess is formed in the semiconductor substrate adjacent the gate stack. The recess has a first profile having substantially vertical sidewalls and a second profile contiguous with and below the first profile. The first and second profiles provide a bottle-neck shaped profile of the recess in the semiconductor substrate, the second profile having a greater width within the semiconductor substrate than the first profile. The recess is filled with a semiconductor material. A pair of spacers are disposed overly the semiconductor substrate adjacent the recess.

Abstract: An electronic device is provided. The electronic device includes a substrate and a plurality of light-emitting assemblies. The substrate includes a first edge, an edge region, and a central region. The edge region is adjacent to the first edge. The central region is adjacent to the edge region and away from the first edge. The light-emitting assemblies are disposed on the substrate, and each of the light-emitting assemblies has a tuning element and a light-emitting element. The light-emitting assemblies further include a first light-emitting assembly and a second light-emitting assembly. The first light-emitting assembly is disposed in the central region and has a first light-emitting pattern. The second light-emitting assembly is disposed in the edge region and has a second light-emitting pattern. At a viewing angle of 60°, the brightness of the first light-emitting pattern is higher than the brightness of the second light-emitting pattern.

Abstract: The invention provides a sampling device for geological fluid detection, relates to the technical field of fluid detection. The sampling device comprises a support frame, the support frame is of an L-shaped structure, and a second support plate is arranged above the support frame; the protection cover is mounted at the corner of the bottom of the support frame. The water fixing cone is clamped above the support frame; the locking inclined block is mounted at the upper part; and the detector is provided with a water inlet pipe. Fluid at different depths is detected through cooperation of the mounting sleeve and the lifting frame, a fluid drainage tube is wound through the winding wheel, the mounting sleeve is driven by the lifting frame to adjust the position through the arrangement of the gear and the rack, the fluid is sampled through the sampling test tube.

Abstract: Under Backend Application Session Management (“BASM”), a DBMS not only creates an application session but also the respective adjunct security context to which to attach the adjunct security context. The middle tier does not need to create the application session or its adjunct security context. Instead, the middle tier sends an end-user token that the middle tier piggybacks to database requests that are sent through database connections. The end-user token identifies an end user and has been authenticated by the middle tier. The generation of the end-user token is concomitant to the process of the middle tier authenticating the end user. The DBMS invokes a user-defined function to generate an adjunct security context. The user-defined function generates the adjunct security context based on the end-user token. Application developers can customize the user-defined function to customize backend security for their needs.

Abstract: The present disclosure relates to a stator of a magnetic levitation bearing, a magnetic levitation bearing, and a compressor. The stator of the magnetic levitation bearing includes a stator core (4), a stator coil (5) wound around the stator core (4), a housing (2) sleeved outside the stator core (4) and having a clearance fit or a transition fit with the stator core (4), and a potting component (3) filled between the housing (2) and the stator core (4).

Abstract: This application discloses a blockchain-based data processing method performed by a computer device. The method includes: in response to a selection operation of media elements associated with a target object, acquiring a target media element combination based on the selected media elements; in response to a virtual resource creation operation for the target media element combination, generating target combined media data corresponding to the target media element combination; and transmitting a virtual resource creation request for the target combined media data to a blockchain network, wherein the blockchain network creates a target on-chain virtual resource corresponding to the target combined media data after determining that the target combined media data passes duplicate check and verification, and an ownership right of the target on-chain virtual resource belonging to the target object.

Abstract: A method includes forming a 2-D material layer over a substrate, wherein the 2-D material layer comprises transition metal atoms and chalcogen atoms; forming a gate structure over the 2-D material layer; supplying chemical molecules to the 2-D material layer, such that atoms of the chemical molecules react with portions of the chalcogen atoms to weaken covalent bonds between the portions of the chalcogen atoms and the transition metal atoms; and forming source/drain contacts over the 2-D material layer, wherein contact metal atoms of the source/drain contacts form metallic bonds with the transition metal atoms of the 2-D material layer.

Abstract: Discloded is a light emitting devices including an electroluminescent unit that emits the light of wavelength I, and a color conversion layer that absorbs the light of wavelength I and emits the light of wavelength II are disclosed. The color conversion layer comprises at least one color conversion material having a structural unit of formula (1) or (2). Display devices containing the light emitting devices are also disclosed.

Abstract: The present disclosure disclosed recombinase aided amplification (RAA) primers and kits for the detection of hepatitis c virus. Nucleotide sequences of the RAA primers include: an upstream primer: 5?-FITC-CTTGGGATATGATGATGAACTGGTCACCTAC-3? (SEQ ID NO. 1); and a downstream primer: 5?-Biotin-AAGAGTAGCATCACAATCAGAACCTTAGCC-3? (SEQ ID NO. 2). The HCV detection by using the RAA primers screened by the present disclosure has good specificity and high sensitivity (at least 10 copies/?L can be detected). The RAA primers can be used to prepare an HCV detection kit and construct an RAA amplification system. And combined with a lateral flow chromatography technology, the present disclosure can achieve rapid and low-cost detection of HCV and visual result judgment, no complex professional background is required, the use process is convenient and fast, and the detection results are safe and reliable.

Abstract: A power supply circuit includes a first regulator and a second regulator. The first regulator is configured to generate a first output signal according to an input signal. A voltage value of the first output signal decreases according to the input signal and a first voltage threshold value at a power-off stage. The second regulator is configured to be enabled according to the first output signal to generate a second output signal according to the input signal. A voltage value of the second output signal decreases according to the input signal and a second voltage threshold value at the power-off stage. The second voltage threshold value is greater than the first voltage threshold value.

Abstract: A bioabsorbable stent system may comprise one or more bioabsorbable stents and one or more restoration agents, wherein the one or more restoration agents are suitable for a targeting position and are coated on the surface of the bioabsorbable stent. A bioabsorbable stent system may comprise one or more bioabsorbable stents and one or more bioabsorbable films, wherein the bioabsorbable films are loaded with restoration agents and/or drugs suitable for a targeting position.

Abstract: A medical polyurethane foam dressing and a preparation method thereof are provided in this disclosure. The medical polyurethane foam dressing includes a polyurethane film, a hydrophilic polyurethane foam layer compounded on the polyurethane film, a release paper provided on the hydrophilic polyurethane foam layer, and a soft silicone composite layer located below the release paper. The polyurethane film consists of a release film and a PU resin layer or TPU resin layer coated on the release film. Products prepared according to the disclosure not only can serve to absorb wound exudate of pressure sore, but also provides single-side water proofing; and it is sticky and can be stably fixed on the wound without easy displacement, thus ensuring continuous and stable liquid absorption.

Abstract: An electronic device includes a metal frame, a feed unit, a switch, a matching network, and a first radiator. The first radiator is part of the metal frame and disposed along two adjacent edges of the electronic device, where a feed point of the first radiator is disposed in a junction area of two adjacent edges of the metal frame, and the feed unit feeds the first radiator at the feed point. The first radiator is configured with a first ground point located between the feed point and a first end of the first radiator, and the first radiator is grounded at the first ground point. The first radiator is configured with a second ground point located between the feed point and a second end of the first radiator. The switch is electrically coupled between the second ground point and the matching network.

Abstract: An interface of integrated circuit (IC) die includes a plurality of the contact elements formed as a contact element pattern corresponding to a parallel bus. The contact elements are arranged in an array of rows and columns and divided into a transmitting group and a receiving group. The contact elements of the transmitting group have a first contact element sequence and the contact elements of the receiving group have a second contact element sequence, the first contact element sequence is identical to the second contact element sequence. The contact elements with the first contact element sequence and the second contact element sequence are matched when the contact element pattern is geometrically rotated by 180° with respect to a row direction and a column direction.

Abstract: A method for cleaning membrane is provided. The method includes, providing a membrane, introducing a thermo-sensitive ionic liquid to contact the membrane and perform a cleaning procedure to collect a cleaning solution, and layering the cleaning solution to form an aqueous layer and an ionic liquid layer at a specific temperature.