Abstract: A carbon black is provided. The carbon black is produced through heat treatment of recycled carbon black. Since the carbon black is made from recycled carbon black, it is a kind of environmentally friendly carbon black.

Abstract: The present application relates to the field of biological technology, and provides a spatial chip, a method for preparing same, and use thereof. The spatial chip comprises a chip substrate comprising a first surface provided with a plurality of isolated single-stranded nucleic acid amplification clusters; each of the single-stranded nucleic acid amplification clusters comprises a plurality of single-stranded nucleic acid molecules with identical nucleotide sequences, and nucleotide sequences of different single-stranded nucleic acid amplification clusters are different; each of the single-stranded nucleic acid amplification clusters has a known physical coordinate set relative to the spatial chip; the single-stranded nucleic acid molecule comprises at least a barcode sequence with a known sequence, and the barcode sequences of each single-stranded nucleic acid amplification clusters are in one-to-one correspondence with the physical coordinate sets.

Abstract: A power tool includes a motor, a speed regulation mechanism, a driver circuit, and a control module. The motor includes a stator winding and a rotor. The speed regulation mechanism is at least used for setting a target rotational speed of the motor. The driver circuit is used for delivering electrical energy provided by a power supply device from a direct current bus to the motor, where the driver circuit includes multiple electronic switches connected between the power supply device and the motor. The control module is configured to calculate a voltage vector according to a measured rotational speed of the motor, a phase current of the stator winding, and the target rotational speed and overmodulate the voltage vector to output a pulse-width modulation (PWM) signal to the driver circuit. A per-unit value of an amplitude of the voltage vector ranges from 0 to 1.15.

Abstract: The present invention discloses an improved structure of an oil channel of an oil filter base assembly in a vehicle, including an oil filter base, where a lower portion of the oil filter base is provided with an oil inlet, an oil outlet, and an oil return port, an end portion of the oil filter base is provided with an antifreeze solution water inlet, a bottom portion is provided with a first water outlet and a second water outlet that are communicated with the antifreeze solution water inlet, a filter cartridge and a bypass valve are mounted in one end of the oil filter base, a filter cover is connected to an end portion of one end, close to the bypass valve, of the oil filter base, an oil cooler is mounted on an upper portion of one end, away from the filter cartridge, of the oil filter base.

Abstract: Disclosed is an oil filter base assembly, including an oil filter base, where the oil filter base has one side connected to a first cooler arranged and the other side connected to a second cooler arranged; With the arrangement of the first cooler and the second cooler on the oil filter base, a medium may pass through the two coolers and be cooled simultaneously by the two coolers, thereby improving the cooling effect of the oil filter base assembly. Therefore, the present invention is worthy of popularization and application.

Abstract: This application discloses a synchronous rendering method, a device, and a storage medium. The method includes: determining, by a virtual graphics processing driver based on a second synchronization flag bit of a synchronization signal, whether to generate a rendering frame; after the rendering frame is generated, setting a first synchronization flag bit and the second synchronization flag bit of the synchronization signal to indicate that the rendering frame has been generated; obtaining, by a virtual graphics processing unit, the rendering frame and the synchronization signal, and determining, based on the first synchronization flag bit, whether to render the rendering frame; and after the rendering frame is rendered, setting the first synchronization flag bit and the second synchronization flag bit to indicate that the rendering frame has been rendered.

Abstract: A sensing module of a sensor package includes a substrate and a sensor. The substrate includes an insulating layer, an integrated circuit (IC), a plurality of first circuits, and a plurality of second circuits. The IC is embedded in the insulating layer and includes a plurality of first contacts and a plurality of second contacts. The first circuits are respectively connected to the first contacts, and a part of each of the first circuits is exposed from the first surface of the insulating layer and is defined as a connection pad. The second circuits are respectively connected to the second contacts, and a part of each of the second circuits is exposed from the second surface of the insulating layer and is defined as a soldering pad. The sensor is disposed on the first surface of the insulating layer and is electrically coupled to the first circuits.

Abstract: A carbon-based material post-modification reactor includes: a feeding port located upstream from the carbon-based material post-modification reactor and adapted to feed a carbon-based raw material into the reactor; a discharging port located downstream from the carbon-based material post-modification reactor and adapted to output a modified carbon-based material; and a screw conveying device disposed in the reactor to simultaneously convey and turn over the carbon-based raw material in the reactor, between the feeding port and the discharging port; and an intake device for inputting ozone gas to the interior of the carbon-based material post-modification reactor. The screw conveying device includes a shaft portion, reverse inner spiral blade group and forward outer spiral blade group.

Abstract: A carbon black with good dispersibility is provided. The carbon black has a full width at half maximum (FWHM) of greater than 0 and less than or equal to 0.3 ?m as measured by a centrifugal sedimentation method, wherein the centrifugal sedimentation method uses anhydrous ethanol as a solvent.

Abstract: A carbon black with high insulating properties is provided. The carbon black satisfies the following conditions (a) and (b): (a) the nitrogen adsorption specific surface area (NSA) is greater than 0 m2/g and less than or equal to 130 m2/g; and (b) the oil absorption number is greater than 0 cc/100 g and less than or equal to 95 cc/100 g.

Abstract: The present invention provides a method for measuring a content of a polycyclic aromatic hydrocarbon in a carbon black, comprising the following steps: extracting a carbon black to be measured using an organic solvent to obtain a sample to be tested; testing the sample to be tested by ultraviolet-visible spectrometer to obtain an absorbance; and using the absorbance and a calibration curve to obtain a content of a polycyclic aromatic hydrocarbon in the sample to be tested, wherein the calibration curve shows relationship between the absorbance of the polycyclic aromatic hydrocarbon and the content of the polycyclic aromatic hydrocarbon. The measurement method of the present invention benefits reduction of detection time.

Abstract: A capacitive coupling package structure includes a first package member, a second package member, a first conductive component, a second conductive component, a first chip, and a second chip. The first package member has two first sides and two second sides that are opposite and connected to the two first sides. The first package member is covered by the second package member. The first conductive component and the second conductive component are disposed in the first package member. Portions of the first conductive component and the second conductive component extend through the two first sides to the outside of the second package member. Other portions of the first conductive component and the second conductive component are flush with the two second sides. The first chip and the second chip establish a capacitive coupling relationship through the first conductive component and the second conductive component.

Abstract: This application describes a packet flow out-of-order detection method. After receiving a first packet from a second node, a first node parses the first packet to obtain a flow segment sequence number of the first packet. After receiving the first packet, the first node continues to receive a second packet from the second node, and parses the second packet to obtain a flow segment sequence number of the second packet. The first packet and the second packet belong to a same packet flow. In view of this, the first node may compare the flow segment sequence number of the first packet with the flow segment sequence number of the second packet, to determine whether the packet flow is out of order.

Abstract: Provided are a method and an apparatus for displaying information of a virtual object, an electronic device, and a storage medium, the method including: displaying in a graphical user interface a first virtual scene and a first virtual object located in the first virtual scene; in response to a motion operation for the first virtual object, controlling the first virtual object to move in the first virtual scene, and controlling the range of the first virtual scene displayed in the graphical user interface to change correspondingly on the basis of the motion of the first virtual object; in response to a note adding operation, displaying in the graphical user interface note prompting information of at least one second virtual object; and, in response to a trigger operation for the note prompting information, adding note information to a target virtual object amongst the displayed at least one second virtual object.

Abstract: An impact tool includes an output shaft for outputting torque, where the tightening torque of the output shaft to a workpiece is greater than or equal to 700 foot-pounds; and an impact assembly that provides an impact force to the output shaft. A main shaft ball groove includes a first ball groove that extends spirally about a main shaft axis and is concave on an outer surface and a second ball groove that extends spirally about the main shaft axis and is concave on the outer surface. An impact ball groove includes a third ball groove that mates with the first ball groove to accommodate the rolling ball and a fourth ball groove that mates with the second ball groove to accommodate the rolling ball. The included angle ? between the first ball groove and the second ball groove is less than the included angle ? between the third ball groove and the fourth ball groove.

Abstract: This application discloses a synchronous rendering method, a device, and a storage medium. The method includes: determining, by a virtual graphics processing driver based on a second synchronization flag bit of a synchronization signal, whether to generate a rendering frame; after the rendering frame is generated, setting a first synchronization flag bit and the second synchronization flag bit of the synchronization signal to indicate that the rendering frame has been generated; obtaining, by a virtual graphics processing unit, the rendering frame and the synchronization signal, and determining, based on the first synchronization flag bit, whether to render the rendering frame; and after the rendering frame is rendered, setting the first synchronization flag bit and the second synchronization flag bit to indicate that the rendering frame has been rendered.

Abstract: A power tool includes a housing, an electric motor, a driver circuit, a speed detection device, and a control device. The driver circuit is electrically connected to the electric motor to drive the electric motor to operate. The speed detection device is configured to acquire a rotational speed of the electric motor. The control device is connected to the speed detection device and the driver circuit and outputs a control signal to the driver circuit to control rotation of the electric motor. The control device is configured to acquire the rotational speed of the electric motor when the electric motor is in a start-up stage, obtain a rotational speed variation of the electric motor within a preset time based on the rotational speed of the electric motor, and turn off the electric motor when the rotational speed variation is less than a rotational speed variation threshold.

Abstract: A navigation satellite time system and its autonomous recovery method are provided, including a load time system, the load time system is configured to generate and maintain the load time, and the load time system comprises an space borne atomic clock, a time-frequency processing unit and a plurality of load time backups module, the time information of the load time is obtained from the ground station time; the pulse-per-second signals of the load time are generated and maintained by the space borne atomic clock and the time-frequency processing unit; when the time-frequency processing unit fails, the first-level recovery state is triggered: the time-frequency processing unit compares the time information and the pulse-per-second signals reversely output by the multiple load time backup modules to perform load time recovery.

Abstract: A method for interaction in a game includes: in response to a preset trigger event, controlling a scene displayed in the graphic user interface to change from a first virtual scene to a second virtual scene of the discussion stage; displaying at least one interaction icon by the graphical user interface; in response to a trigger operation in the at least one interaction icon, controlling a first virtual object model to perform an animation corresponding to the interaction icon corresponding to the trigger operation to a target virtual object model, where the target virtual object model is a model in at least one second virtual object model.

Abstract: A method of zooming an image capturing device may comprise outputting a first image collected by a first camera of an image capturing device, wherein the first camera has a first focal length; controlling switching of the current focal length of the image capturing device from the first focal length supported by the first camera to a second focal length supported by a second camera of the image capturing device; and outputting a second image collected by the second camera while maintaining a position of a target object in the second image to be the same as a position of the target object in the first image. The first focal length and the second focal length are not identical.