Abstract: A device and a method for nondestructively detecting a transient characteristic of a conductive screw of a turbo-generator rotor are provided. The device includes a personal computer (PC), an extremely-steep pulse generator, an ultra-high-frequency double-isolation transformer, and a pulse emitting and coupling module, which are connected in sequence. The pulse emitting and coupling module is connected to a load. A synchronous pulse receiving non-inductive divider circuit synchronously receives a characteristic waveform from the load, and the synchronous pulse receiving non-inductive divider circuit is connected to an ultra-high-speed analog/digital (A/D) module through a nonlinear saturation amplifying circuit that amplifies a signal. The PC receives a signal from the ultra-high-speed A/D module. The load includes a positive or negative excitation lead loop that is in a 180° symmetrical and instantaneous short-circuit state and a rotor shaft.

Abstract: A method for constructing an efficient product surface defect detection model based on network collaborative pruning is provided. According to an initial product surface defect detection model, the method provides a network-based collaborative pruning method and constructs the efficient product surface defect detection model. On a premise of ensuring an accuracy of a product defect detection method, a product surface defect detection time is reduced to satisfy manufacturer's requirements on the product surface defect detection time and accuracy of product surface defects.

Abstract: A battery cell, a battery module, a battery pack, an energy storage system, and an electric vehicle. The battery cell includes one or more stress sensors. The stress sensors are located on the explosion-proof valve and face outside a housing of the battery cell, or the stress sensors are located on the explosion-proof valve and face inside a housing of the battery cell. Each stress sensor is configured to detect stress that is inside the battery cell and that acts on a corresponding position on the explosion-proof valve, and the one or more stress sensors are configured to transmit all obtained electrical signals to processor. The processor determines a faulty target battery cell based on one or more received electrical signals.

Abstract: A device for detecting a slot wedge, an air gap and a broken rotor bar is provided, where a sequential circuit generates double concurrent pulses; the sequential circuit is connected to driving power modules; the driving power modules are connected to front-end interface circuits; the front-end interface circuits convert the double concurrent pulses into corresponding magnetic-field pulses; the magnetic-field pulses are transmitted to power supply terminals on adjacent phases of stator windings through impedance matching pins and coupled at a corresponding coil, air gap and squirrel cage rotor to generate single groups of cyclic rotating magnetic potentials; single rotating magnetic potentials are sequentially generated in adjacent slots on each of the phases of the stator windings; rotating electric potentials in magnetic circuits with two symmetrical phases are magnetically coupled to form distributed coupling magnetic field reflected full-cycle waves for reflecting a difference of a corresponding slot wedg

Abstract: A catalyst for continuous production of 1,1,1,3-tetrachloropropane through gas-solid reaction as well as a preparation method and use thereof are provided. The catalyst includes a zero-valent iron and phosphorus co-modified carbon material which includes a carbon material as a carrier, a zero-valent iron supported onto the carrier and serving as an active component, and a phosphate functional group formed on the surface of the carbon material. The preparation method includes: co-modifying a carbon material using a ferric salt and organic phosphorus to obtain the catalyst for continuous production of 1,1,1,3-tetrachloropropane through gas-solid reaction. The present application further provides a method for continuous production of 1,1,1,3-tetrachloropropane through gas-solid reaction.

Abstract: Embodiments of the present disclosure provide a positioning method and apparatus, a device, and a storage medium, the method is applied to a wearable display device, where the wearable display device includes a display host and a peripheral, the display host and/or the peripheral are used for projecting a structure light image onto an object in a real environment, and the method includes: acquiring an image obtained by the display host shooting the object, and an image obtained by the peripheral shooting the object; and determining, according to image obtained by shooting and the structure light image, a pose of the peripheral relative to the display host.

Abstract: A rail welding method and device are provided. The method includes: welding a bottom of rail, wherein welding is repeatedly performed along a first swing trajectory in a lengthwise direction of a weld seam, from one end of the bottom of rail to the other end of the bottom of rail; welding a waist of rail, wherein welding is repeatedly performed in the lengthwise direction of the weld seam along a second swing trajectory, from one end of the waist of rail, and the second swing trajectory is divided into two regions for respective welding in a width direction of the weld seam; and welding a head of rail, wherein welding is performed in the lengthwise direction of the weld seam along the first swing trajectory, between one end of the head of rail and the other end of the head of rail.

Abstract: The present disclosure discloses an electric dust blower which includes a shell, a control panel, a battery module, a fan, an illumination lamp, and air outlet nozzles, where the shell includes two half shells capable of being spliced together left and right; the battery module is disposed at a lower portion of a mounting chamber; the fan is disposed at a rear portion of an air chamber and is close to an air inlet; the illumination lamp is mounted in a mounting hole and exposed out of a front end face of a main body; and the air outlet nozzles are detachably mounted at and connected to an air outlet.

Abstract: The present disclosure discloses an electric dust blower which includes a shell, a control panel, a battery module, a fan, an illumination lamp, and air outlet nozzles, where the shell includes two half shells capable of being spliced together left and right; the battery module is disposed at a lower portion of a mounting chamber; the fan is disposed at a rear portion of an air chamber and is close to an air inlet; the illumination lamp is mounted in a mounting hole and exposed out of a front end face of a main body; and the air outlet nozzles are detachably mounted at and connected to an air outlet.

Abstract: It relates to a composition for conditioning keratin fibers comprising in an oily phase: a) at least one silicone resin; b) at least one triglyceride; and c) at least one dialkyl ether. It also relates to a cosmetic process for caring for keratin fibers comprising at least a step of applying the composition onto said keratin fibers.

Abstract: A blockchain transaction record that is selected from a blockchain account book associated with a blockchain and satisfies a specified condition is obtained by a blockchain member. The blockchain transaction record is compared with an off-chain transaction record maintained by the blockchain member to obtain a comparison value indicating whether the off-chain transaction record is consistent with the blockchain transaction record. If the comparison value indicates that the off-chain transaction record is inconsistent with the blockchain transaction record, the off-chain transaction record is modified based on the blockchain transaction record to make the off-chain transaction record consistent with the blockchain transaction record.

Abstract: A fuel cell cathode catalyst layer structure for enhancing the durability of a catalyst is provided. The cathode catalyst layer structure includes a first catalyst portion, a second catalyst portion, and a third catalyst portion that are arranged in sequence from an area close to a diffusion layer to an area close to a proton exchange membrane (PEM); a pure platinum catalyst is placed inside the first catalyst portion, the second catalyst portion, and the third catalyst portion; platinum loads of the pure platinum catalysts inside the first catalyst portion, the second catalyst portion, and the third catalyst portion decrease progressively; and average particle sizes of pure platinum catalyst particles inside the first catalyst portion, the second catalyst portion, and the third catalyst portion increase progressively. The pure platinum catalyst with a large or small particle size is more resistant to corrosion, and improves the initial performance of fuel cell.

Abstract: A membrane electrode with ultra-low oxygen mass transfer resistance includes an anode catalyst layer, a proton exchange membrane (PEM), and a cathode catalyst layer. A catalyst in the cathode catalyst layer is negatively charged, and the cathode catalyst layer is further doped with a negatively charged carbon carrier. A carbon carrier of the cathode catalyst layer in the membrane electrode is negatively charged, thereby optimizing the distribution of ionomers to achieve the purpose of reducing an oxygen mass transfer resistance in the cathode catalyst layer. In addition, an appropriate amount of the negatively charged carbon carrier is doped to increase a local oxygen concentration near active sites. In conclusion, the two methods of modifying with a negative charge and doping a negatively charged carbon carrier are used to optimize the local mass transfer resistance in an electrode and thus improve the cell performance.

Abstract: A data processing method, applied to an applet, includes: sending a plug-in service request to a platform server, the plug-in service request comprising a plug-in identifier configured for the platform server to establish a usage association between a plug-in corresponding to the plug-in identifier and the applet, wherein the plug-in has an independent data server; receiving an applet access request, determining whether the applet access request and a service corresponding to the plug-in meet a preset correspondence, and if it is determined that the applet access request and the service corresponding to the plug-in meet the preset correspondence, loading the plug-in according to the usage association; and sending the applet access request to the plug-in, so that the plug-in completes a task corresponding to the applet access request by accessing the data server of the plug-in.

Abstract: An asset transfer request to transfer an asset to a blockchain member associated with a blockchain is detected, where the asset is of a specified asset type and is issued by a specified anchor in the blockchain. Whether there is a maximum trusted asset limit configured by the blockchain member for the specified anchor and that corresponds to the specified asset type is determined. If it is determined that the maximum trusted asset limit is not configured, application of the asset transfer request to the asset is prohibited. However, if it is determined that the maximum trusted asset limit is configured, whether the maximum trusted asset limit is exceeded is determined. If it is determined that the maximum trusted asset limit is not exceeded, the asset transfer request is applied to the asset.

Abstract: A data processing method, applied to an applet, includes: sending a plug-in service request to a platform server, the plug-in service request comprising a plug-in identifier configured for the platform server to establish a usage association between a plug-in corresponding to the plug-in identifier and the applet, wherein the plug-in has an independent data server; receiving an applet access request, determining whether the applet access request and a service corresponding to the plug-in meet a preset correspondence, and if it is determined that the applet access request and the service corresponding to the plug-in meet the preset correspondence, loading the plug-in according to the usage association; and sending the applet access request to the plug-in, so that the plug-in completes a task corresponding to the applet access request by accessing the data server of the plug-in.

Abstract: A blockchain asset that is transferred from a second blockchain member is received at a first blockchain member in response to an asset transfer request for transferring an asset between a payer and a payee, where the first blockchain member and the second blockchain member associated with a blockchain. In response to receiving the blockchain asset, an off-chain asset transfer-out operation for the payee is performed by the first blockchain member. If the off-chain asset transfer-out operation fails, a transaction reversal application for an asset transfer transaction corresponding to the asset transfer request is written into the blockchain by the first blockchain member. In response to writing the transaction reversal application, an asset clearing with the second blockchain member for an off-chain asset corresponding to the off-chain asset transfer-out operation is performed by the first blockchain member.

Abstract: A blockchain transaction record that is selected from a blockchain account book associated with a blockchain and satisfies a specified condition is obtained by a blockchain member. The blockchain transaction record is compared with an off-chain transaction record maintained by the blockchain member to obtain a comparison value indicating whether the off-chain transaction record is consistent with the blockchain transaction record. If the comparison value indicates that the off-chain transaction record is inconsistent with the blockchain transaction record, the off-chain transaction record is modified based on the blockchain transaction record to make the off-chain transaction record consistent with the blockchain transaction record.

Abstract: Input information associated with a data field is received. The data field is included in a page. A determination is made as to whether the input information includes an error. In response to determining that the input information includes an error an anchor is determined in the page corresponding to a location of the data field in the page. An error popup is displayed on the page. The error popup includes an error list that includes an error notification associated with the error. The error notification includes the location of the data field in the page.

Abstract: A blockchain transaction record that is selected from a blockchain account book associated with a blockchain and satisfies a specified condition is obtained by a blockchain member. The blockchain transaction record is compared with an off-chain transaction record maintained by the blockchain member to obtain a comparison value indicating whether the off-chain transaction record is consistent with the blockchain transaction record. If the comparison value indicates that the off-chain transaction record is inconsistent with the blockchain transaction record, the off-chain transaction record is modified based on the blockchain transaction record to make the off-chain transaction record consistent with the blockchain transaction record.