Abstract: A method for multi-beam laser scribing of a thin-film solar cell is provided. A laser beam output by a laser is split by an optical path unit or a splitter assembly into multiple sub-beams. The multiple sub-beams are focused by a laser-focusing scribing head assembly to form a laser focus on the thin-film solar cell. The thin-film solar cell is fixed on a bearing platform or clamped by a clamping mechanism, and driven by a drive module to reciprocate in a direction perpendicular to an output direction of the laser-focusing scribing head assembly to create a first scribe line. A position of the laser-focusing scribing head assembly is switched, and the thin-film solar cell is driven to reciprocate again to create a second scribe line. The fume and dust generated during the scribing process are removed through a fume-fume-dust extraction port corresponding to the scribing head assembly.

Abstract: An exhaust pipe, a method for optimizing and designing an exhaust pipe, and an engine are provided. The exhaust pipe includes a first exhaust pipeline arranged in a first direction, an EGR pipeline arranged in a second direction, and a pre-turbine pipeline arranged in a third direction. An input end of the EGR pipeline is communicated with an output end of the first exhaust pipeline, and an included angle ?1 between the first direction and the second direction is smaller than 60°. The pre-turbine pipeline, the EGR pipeline and the first exhaust pipeline are located in a first plane; the pre-turbine pipeline is communicated with the EGR pipeline, an included angle ?2 between the third direction and the second direction is smaller than or equal to 90°, and a cross-sectional diameter D of the pre-turbine pipeline is 0.2-1 times the diameter H of the first exhaust pipeline.

Abstract: A multi-laser beam focusing and scribing device with following function includes a beam splitter module, a focusing lens module, a first shaft, a diffractive optical element (DOE) beam shaping lens, a second adjustment shaft, a coaxial charge-coupled device (CCD) vision module, and a distance-measuring sensor. The first adjustment shaft is configured to adjust a focus position, and the second adjustment shaft is configured to adjust a spacing between scribed lines, and is electrically-powered. The beam splitter module is configured to split an incident laser beam into a plurality of sub-beams.

Abstract: The present invention relates to use of a benzisoselenazole compound in the preparation of a drug for the treatment of spinaglioma. By applying the benzisoselenazole compound, cell proliferation of the spinaglioma can be effectively inhibited at the cellular level, with an obvious dose dependence. The tumor growth of a tumor-bearing mouse can be effectively inhibited at the animal model level, and the survival period of the tumor-bearing mouse can be prolonged.

Abstract: Clean version of the Abstract A passive human detection method and apparatus, a device, and a medium are provided. The passive human detection method includes: acquiring an infrared radiation signal in an environment, and acquiring a temperature of a target object; emitting an electromagnetic wave into the environment, and acquiring a reflected echo signal; determining a position of the target object in the environment based on the echo signal; matching a threshold range based on the position of the target object; and comparing the temperature of the target object with the threshold range to determine detection information of a human in the environment. The passive human detection method combines electromagnetic wave detection and thermal imaging to detect whether there is a human in the current environment. The passive human detection method can effectively filter out interference signals, greatly improving the accuracy and sensitivity of human detection.

Abstract: A passive human detection method and apparatus, a device, and a medium are provided. The passive human detection method includes: acquiring an infrared radiation signal in an environment, and acquiring a temperature of a target object; emitting an electromagnetic wave into the environment, and acquiring a reflected echo signal; determining a position of the target object in the environment based on the echo signal; matching a threshold range based on the position of the target object; and comparing the temperature of the target object with the threshold range to determine detection information of a human in the environment. The passive human detection method combines electromagnetic wave detection and thermal imaging to detect whether there is a human in the current environment. The passive human detection method can effectively filter out interference signals, greatly improving the accuracy and sensitivity of human detection.

Abstract: A combustion device for an engine and a method for designing a piston includes a cylinder head, a cylinder block cooperating with the cylinder head, and a piston disposed in the cylinder block. The cylinder head includes an intake valve setting region and an exhaust valve setting region. The surface of the piston adjacent to the cylinder head includes a first concave surface and a squeezing surface adjacent to the first concave surface. The squeezing surface includes a first squeezing surface corresponding to the intake valve setting region and a second squeezing surface corresponding to the exhaust valve setting region. A combustion chamber is formed between the first concave surface and the cylinder head. The second squeezing surface includes a flow guide groove. The flow guide groove includes two first notches facing the combustion chamber.

Abstract: The present disclosure provides a filtration assembly and an atomizer. The filtration assembly is applied to the atomizer. The atomizer includes a housing having a gas outlet section and an atomization cavity in communication with the gas outlet section. The filtration assembly includes a filtration mesh and a flow guide rod. The filtration mesh is disposed at the gas outlet section and includes a first end away from the atomization cavity and a second end close to the atomization cavity. A shape and size of the first end match a shape and size of the gas outlet section to enable the gas outlet section to be covered. The size of the first end is greater than the size of the second end. The flow guide rod is connected to the second end and the atomization cavity.

Abstract: An on-off detection circuit for a flash switch includes an on-off detection module and a control module. An input end of the on-off detection module is connected with a power supply through the flash switch, the on-off detection module is configured to acquire a digital signal as a detection level according to an electromagnetic signal generated by input current. An input end of the control module is connected with an output end of the on-off detection module, to receive the detection level and determine an on-off state change of the flash switch according to the detection level.

Abstract: An alarm processing method includes: receiving an alarm query request for a service, and acquiring a plurality of alarm records of the service; performing keyword extraction processing on the alarm record according to an attack word library of the service to obtain an attack keyword; determining a similarity between every two of the plurality of alarm records according to the attack keywords in the alarm records; and clustering the plurality of alarm records according to the similarity to obtain a plurality of alarm record clusters.

Abstract: This application discloses a data packet processing method performed by an electronic device. The data packet processing method includes: obtaining a target network data packet; generating data packet fingerprints of the target network data packet, the data packet fingerprints including a target traffic attribute fingerprint and a target traffic payload fingerprint; determining a type of the target network data packet according to an occurrence frequency of the target traffic payload fingerprint in a fingerprint database and the target traffic attribute fingerprint, the fingerprint database including historical traffic payload fingerprints of a plurality of historical network data packets; and blocking a network connection of the target network data packet when the type of the target network data packet is an abnormal type.

Abstract: A pressure sensor die especially suitable for high-temperature, high-pressure operating environment and delivering accurate and reliable pressure measurement at low cost. A single crystalline silicon includes a cap, a substrate and a base connected together. A recess formed on the cap creates an upper sealed cavity with the substrate. A silicon oxide layer is formed between the substrate and the cap. A recess formed on the base creates a lower sealed cavity with the substrate. The upper sealed cavity and the lower sealed cavity overlap in their projections. The substrate includes at least two sets of piezoresistive sensing elements located within the overlapping projections, perpendicular to each other, and oriented in different crystallographic directions.

Abstract: A pressure sensor die especially suitable for high-temperature, high-pressure operating environment and delivering accurate and reliable pressure measurement at low cost. A single crystalline silicon includes a cap, a substrate and a base connected together. A recess formed on the cap creates an upper sealed cavity with the substrate. A silicon oxide layer is formed between the substrate and the cap. A recess formed on the base creates a lower sealed cavity with the substrate. The upper sealed cavity and the lower sealed cavity overlap in their projections. The substrate includes at least two sets of piezoresistive sensing elements located within the overlapping projections, perpendicular to each other, and oriented in different crystallographic directions.

Abstract: A method and system for mitigating a urea deposit within an SCR system that includes determining a mass of an accumulated urea deposit present within the SCR catalyst and SCR piping, comparing the mass of the accumulated urea deposit with a deposit upper threshold limit, and initiating an SCR regeneration event when the mass of the accumulated urea deposit is greater than the deposit upper threshold limit. The method further includes determining an amount of NH3 passing through the SCR catalyst downstream of the urea deposit, comparing the amount of NH3 passing through the SCR catalyst with an NH3 regeneration threshold limit, and terminating the SCR regeneration event when the level of NH3 passing through the SCR catalyst is less than the SCR NH3 regeneration threshold.

Abstract: The present invention is related to a sensor. In particular, the present invention is related to a dual-cavity pressure sensor die and its fabrication process. The pressure sensor comprises a chamber inside which a pressure sensor die is provided. The pressure sensor die is uniformly compressed by the external pressure to be measured and can deform freely inside the chamber. The pressure sensor die is primarily constructed of single crystalline silicon and comprises a cap, a substrate and a base connected together. A recess is formed on the cap. The recess forms an upper sealed cavity with the substrate. A silicon oxide layer is formed between the substrate and the cap. The substrate further comprises a plurality of piezoresistive sensing elements which are located inside the upper sealed cavity. A recess is formed on the base. The recess forms a lower sealed cavity with the substrate. The present pressure sensor is more immune to temperature effects.

Abstract: Methods are disclosed herein for administering a oncogenic Src homology-2 domain containing protein tyrosine phosphatase-2 (SHP2) inhibitor for treating autoimmune and/or glomerulonephritis-associated diseases, and in particular, Systemic Lupus Erythematosus (SLE).

Abstract: Methods are disclosed herein for administering a oncogenic Src homology-2 domain containing protein tyrosine phosphatase-2 (SHP2) inhibitor for treating autoimmune and/or glomerulonephritis-associated diseases, and in particular, Systemic Lupus Erythematosus (SLE).

Abstract: Methods are disclosed herein for administering a oncogenic Src homology-2 domain containing protein tyrosine phosphatase-2 (SHP2) inhibitor for treating autoimmune and/or glomerulonephritis-associated diseases, and in particular, Systemic Lupus Erythematosus (SLE).

Abstract: Methods are disclosed herein for administering a oncogenic Src homology-2 domain containing protein tyrosine phosphatase-2 (SHP2) inhibitor for treating autoimmune and/or glomerulonephritis-associated diseases, and in particular, Systemic Lupus Erythematosus (SLE).

Abstract: A method and system for mitigating a urea deposit within an SCR system that includes determining a mass of an accumulated urea deposit present within the SCR catalyst and SCR piping, comparing the mass of the accumulated urea deposit with a deposit upper threshold limit, and initiating an SCR regeneration event when the mass of the accumulated urea deposit is greater than the deposit upper threshold limit. The method further includes determining an amount of NH3 passing through the SCR catalyst downstream of the urea deposit, comparing the amount of NH3 passing through the SCR catalyst with an NH3 regeneration threshold limit, and terminating the SCR regeneration event when the level of NH3 passing through the SCR catalyst is less than the SCR NH3 regeneration threshold.