Abstract: A power tool includes a cylinder at least partially disposed in a housing, where gas is stored in the cylinder. The cylinder includes: an inflation nozzle, where the cylinder is inflated with the gas in advance through the inflation nozzle; an inflation valve, where the gas filled through the inflation nozzle flows through the inflation valve and then enters the cylinder; and a pressure relief valve disposed between the inflation nozzle and the inflation valve, where when a pressure of the gas filled through the inflation nozzle is greater than a first preset pressure, the filled gas is released through the pressure relief valve.

Abstract: The present invention discloses a device and method for non-destructive testing of mechanical properties and residual stress of pressure vessels. The device comprises a pressure vessel simulator, an indenter, and a moving mechanism; the indenter adjusts its testing position via the moving mechanism and performs non-destructive testing on the pressure vessel simulator; the pressure vessel simulator has an intermediate circumferential weld formed by butt welding of a first and second cylindrical section, and a first and second longitudinal weld formed by rolling and welding the first and second cylindrical sections together; the device further comprises a water inlet; the moving mechanism comprises two parallel horizontal guide rails and two parallel arc-shaped guide rails; the arc-shaped guide rails are vertically positioned above the horizontal guide rails and surround the pressure vessel simulator.

Abstract: Embodiments of the disclosure relate to an optical fiber ribbon. The optical fiber ribbon includes a plurality of subunits each including a subunit coating of a first material surrounding at least one optical fiber. The optical fiber ribbon also includes a ribbon matrix of a second material disposed around the plurality of subunits. A plurality of bonds are intermittently formed between adjacent subunits of the plurality of subunits. Each bond is formed by an interaction of the second material with the first material for the purpose of creating a first level of adhesion between the first and second materials at an outer surface of the subunit coating. The second material is inhibited from interacting with the first material in regions between the plurality of bonds along a length of the optical fiber ribbon to create a second level of adhesion that is less than the first level of adhesion.

Abstract: A microscope: includes a beam source producing a laser beam, an objective lens, and first and second scanning mirrors operating along perpendicular axes to reflect the laser beam to scan a specimen through the objective lens. A first pair of cylindrical lenses is positioned between the objective lens and the first scanning mirror at points along the straight line, with a focal point aligned with the first scanning mirror, to receive the reflected laser beam and provide it to the objective lens. A second pair of cylindrical lenses is positioned between the objective lens and the second scanning mirror along the straight line, with a focal point aligned with the second scanning mirror, to receive the reflected laser beam and provide it to the objective lens.

Abstract: Techniques for improving the performance of an autonomous vehicle (AV) by automatically annotating objects surrounding the AV are described herein. A system can obtain sensor data from a sensor coupled to the AV and generate an initial object trajectory for an object using the sensor data. Additionally, the system can determine a fixed value for the object size of the object based on the initial object trajectory. Moreover, the system can generate an updated initial object trajectory, wherein the object size corresponds to the fixed value. Furthermore, the system can determine, based on the sensor data and the updated initial object trajectory, a refined object trajectory. Subsequently, the system can generate a multi-dimensional label for the object based on the refined object trajectory. A motion plan for controlling the AV can be generated based on the multi-dimensional label.

Abstract: A cloud desktop security management and control method, and a device, a storage medium and a system are provided. The system includes: a management and control server, configured to configure a first cloud desktop and a second cloud desktop for a target user, configure a first security policy for the first cloud desktop, and configure a second security policy for the second cloud desktop; a client, respectively communicatively connected to the first cloud desktop and the second cloud desktop, wherein a display screen corresponding to the client includes a first screen corresponding to the first cloud desktop and a second screen corresponding to the second cloud desktop; and a target cloud desktop, configured to obtain an operation behavior triggered by the target user through a target screen, and respond to the operation behavior according to a security policy corresponding to the target cloud desktop.

Abstract: Examples are disclosed that relate to a head-mounted device (HMD) capable of providing adjustable vision correction. In one example, an HMD comprises an image source configured to generate image light, display optics configured to receive the image light and direct the image light toward an eye of a user, and a vision correction module positioned intermediate the display optics and the eye of the user. The vision correction module is configured to receive the image light output from display optics. The vision correction module comprises a first cylindrical lens, a second cylindrical lens aligned with the first cylindrical lens along a propagation axis, and an adjustment mechanism. The adjustment mechanism is configured to change a rotational orientation of the first cylindrical lens relative to the second cylindrical lens about the propagation axis to direct the image light to a designated location in the eye of the user.

Abstract: A surgical tool for piercing tissue of a body comprises a hollow external component (1) having a peripheral wall (11), an internal component (2) movable disposed inside the external component (1) and having a piercing head (21); when the piercing head (21) and the internal component (2) retract relative to the external component (1), the movable component (3) deforms partially, expands outwardly in a radial direction, and fills the bladder (6). The movable component can be deformed to expand outward in the radial direction, so as to make the bladder to expand, so that the surgical tool can be positioned on the body of the patient.

Abstract: A high-concentration high-entropy electrolyte and its preparation method and battery were disclosing in the present disclosure. A high-concentration high-entropy electrolyte, including a solvent, a first solute salt and added salts, the first solute salt is a solute salt with high solubility in the solvent, while the added salts are composed of at least three solute salts, the molar concentration range of the solute salts in the high-concentration high-entropy electrolyte is between 20 M-60 M, the molar concentration of the first solute salt is greater than 20 M, and the molar concentration of the first solute salt is greater than 50% of the molar concentration of the high-concentration high-entropy electrolyte. The sodium-carbon dioxide batteries assembled with high-concentration high-entropy electrolytes not only have higher power density, but also have excellent discharge specific capacity and rate performance.

Abstract: An out-of-band Ethernet interface switching apparatus, a multi-node server system, and a server device are provided by the present application. In the present application, the out-of-band management switch may be directly connected via one cable, thereby the quantity of ports of the out-of-band management switch is released, the hardware resource utilization of the server system is improved, the quantity of cables required for connection is reduced and the operation and maintenance cost of the system are helped to be reduced.

Abstract: The present disclosure discloses a lower carrier roller device for a belt conveyor having sweeping and cleaning functions, which comprises a lower carrier roller assembly and a sweeping roller brush assembly arranged on one side of the lower carrier roller assembly, wherein the sweeping roller brush assembly is fit with the lower carrier roller assembly; the lower carrier roller assembly comprises a lower carrier roller, which is arranged in a running direction of a return belt of the belt conveyor; and a surface of the lower carrier roller is configured to a rhombic grid shape; the sweeping roller brush assembly comprises a roller brush shaft and a roller brush arranged on the roller brush shaft; the roller brush shaft is arranged parallel to and below the lower carrier roller, and the roller brush is fit with the surface of the lower carrier roller. The present disclosure also discloses a belt conveyor comprising the lower carrier roller device for a belt conveyor.

Abstract: Some embodiments of the teachings herein include a PCB module. An example comprises: a PCB support plate configured to for vertical assembly with a base plate via slot-column structure, wherein the base plate is assembled in a power electronic device; and a PCB configured to be assembled on the PCB support plate.

Abstract: The present invention provides compounds, compositions thereof, and methods of using the same.

Abstract: Various examples relate to apparatuses, devices, methods and computer programs for an edge worker node and an edge server, to an edge worker node and an edge server, and to a system comprising an edge server and one or more edge worker nodes. An apparatus comprises processing circuitry to determine information on a network quality of a network connection between the edge worker node and an edge server, select, based on the network quality, a network configuration, the network configuration comprising at least one of a network protocol and a prioritization strategy for communicating via the network connection, and to communicate via the network connection according to the selected network configuration.

Abstract: A heating assembly, an atomization core, and an electronic cigarette. The heating assembly is arranged on the atomization core, and comprises a first contact, a second contact, and a first resistor, wherein the first resistor is fixedly arranged between the first contact and the second contact, and at least one closed heating area is arranged on the first resistor.

Abstract: Provided is a computing system including: a first device configured to securely manage first secret information and first permutation information; and a second device configured to securely manage second secret information and second permutation information, and wherein first managed information that is managed by the first device from among first permutation results obtained as a result of permutating the first secret information, second managed information that is managed by the first device from among second permutation results obtained as a result of permutating the second secret information, third managed information that is managed by the second device from among the first permutation results, and fourth managed information that is managed by the second device from among the second permutation results are used to compute a secret product being a product of the first secret information and the second secret information.

Abstract: A multi-user flexible Ethernet fine granularity time slot allocation method and apparatus. The method is specifically: providing two time slot resource allocation and deployment schemes according to user demands, where the first scheme performs time slot allocation based only on an objective of global minimization of jitter of time slot allocated to all the users and can improve resource allocation equity and improve whole performance of a network. The second scheme performs weighted sum of delay and jitter minimization based time slot allocation on each user according to the quantity of time slots required for the users in sequence from large to small on the premise of most user input data in the current time slot assignment period being transmitted in the current time slot assignment period.

Abstract: Provided is a nail gun, including: a power assembly including at least a motor and a transmission assembly; a firing assembly including at least a cylinder assembly and a striker assembly; and a housing assembly including at least a first housing for a user to grip and a second housing for accommodating at least part of the firing assembly; where, at least part of the power assembly is located inside the first housing; and a distance D7 between a center of gravity of the nail gun and a central plane defined by the first housing along a front-rear direction and a vertical direction is less than or equal to 5 mm.

Abstract: Provided are a body assembly of a vehicle and a vehicle. The body assembly of the vehicle includes: a rear floor frame including a longitudinal beam structure and a cross beam structure; and a sill beam connected to the longitudinal beam structure. The longitudinal beam structure includes a first longitudinal beam body and a second longitudinal beam body spaced apart from each other and arranged opposite to each other. The first longitudinal beam body has an extension beam extending towards the second longitudinal beam body, and/or the second longitudinal beam body has an extension beam extending towards the first longitudinal beam body. The cross beam structure is connected between the first longitudinal beam body and the second longitudinal beam body, and is connected to a corresponding extension beam of the extension beams.

Abstract: An immersion objective, an optical system and a detection method. The immersion objective sequentially comprises, in the direction from an object side (S) to an image side, a first lens group (G1) having a positive focal power, at least one group of lens groups (G5, G6) having a negative focal power, and an immersion medium (m) which is located on the object side (S) of the first lens group (G1) and immerses at least part of the first lens group (G1), wherein the working distance S0 of the immersion medium (m) between the first lens group (G1) and the object side (S) and the focal length Fobj of the immersion objective satisfy the conditional expression 0?S0/Fobj?0.16. By means of the cooperation of a plurality of groups of lenses, an immersion objective has a relatively small size and a relatively low mass within a relatively compact size range, and a large field of view, a high resolution and a low distortion are achieved, thereby improving the optical performance of the immersion objective.