Abstract: A low dielectric sealing glass powder for a miniature radio-frequency glass insulator is made of the following raw materials expressed in molar percentages: SiO2: 70.5-74.0%, B2O3: 20.5-23.5%, Ga2O3: 0.5-2.0%, P2O5: 0.25-2.0%, Li2O: 0.4-6.0%, K2O: 0.1-1.5%, LaB6: 0.05-1.0%, and NaCl: 0.03-0.3%. The raw material components are simple, and the preparation method is easy to implement. The dielectric constant and dielectric loss of the prepared glass powder are low, and the melting and molding temperature is low, which are convenient for large-scale industrial production. The melting and molding temperature of the low dielectric sealing glass powder ranges from 1320° C. to 1360° C., and the obtained glass has a dielectric constant ranging from 3.8 to 4.1 and a dielectric loss ranging from 4×10?4 to 10×10?4 at a frequency of 1 MHz, and a sealing temperature ranging from 900° C. to 950° C.

Abstract: A method and device for processing a heat exchanger. The heat exchanger processing device comprises: a first assembly for placing a flat tube group, wherein the first assembly comprises a limiting portion, and the limiting portion is used for limiting the flat tube group in the first direction; and a second assembly, wherein a height direction of the first assembly is defined as a second direction, at least part of the second assembly is located above the first assembly in the second direction, and the second assembly comprises a clamping member, the clamping member for clamping a fin group; and a press-fitting member connected to the clamping member, and the press-fitting member being movable in the second direction so as to press-fit the fin group onto the flat tube group in the second direction.

Abstract: A compressor and a refrigeration system are provided. The compressor has a shell, an air cylinder assembly and a pressure relief device. The shell has a containing cavity. The air cylinder assembly is disposed in the containing cavity, and has an air suction cavity and a pressure relief channel. The pressure relief channel communicates with the air suction cavity and the containing cavity, and has a pressure relief opening. The pressure relief device is connected with the air cylinder assembly. The pressure relief device moves in the axis direction of the pressure relief channel, so as to open or close the pressure relief opening.

Abstract: Systems and methods for providing voice feedback for video conferences are provided. A computer-implemented method includes joining, by a client device, a video conference hosted by a video conference provider, the video conference having a plurality of participants using a plurality of client devices. With voice feedback enabled, the client device may receive a first audio stream from the video conference provider, the first audio stream associated with a first participant of the plurality of participants and a second audio stream from a user of the client device, the second audio stream comprising a voice of the user of the client device. The client device can play the first audio stream on one or more channels of one or more audio devices connected to the client device and play the second audio stream on the one or more channels of the one or more audio devices.

Abstract: The invention discloses a blockchain-based intrusion detection system for railway signal, which is built on a blockchain's distributed chain structure, without a central, trusted control center. This design mitigates the vulnerabilities associated with centralized intrusion detection centers. Additionally, by utilizing a blockchain-based distributed structure, it also eliminates the risk of a single point of failure for the intrusion detection center. Moreover, the data within the blockchain-based intrusion detection system is highly resistant to malicious tampering. This is achieved by leveraging the consensus mechanism inherent in the blockchain, which can achieve consensus among intrusion detection nodes. The current invention solves the internal evil attacks and avoid the inability to reach consensus between nodes due to internal evil, thereby affecting the intrusion detection performance; at the same time, the intrusion detection model can resist external network attacks.

Abstract: A connector includes a tubular portion, a flange portion, and a first protruding portion. The tubular portion includes a first through hole and a first wall, the first wall is arranged around the first through hole, and the first wall includes a first end face that includes a first opening. The flange portion is located at an end of tubular portion in an axial direction. The flange portion includes a first side face arranged around the first wall, the flange portion further includes a second end face and a third end face which are arranged in the axial direction of the tubular portion. The first protruding portion is connected to the first wall, and the first protruding portion is located outside the first through hole in the axial direction of the tubular portion.

Abstract: The disclosure discloses a metal foil, a metal foil with a carrier, a copper-clad laminate and a Printed Circuit Board. Herein, a plurality of protrusions are distributed on one face of the metal foil, and the protrusions have the follow microscopic morphology: the lower half part of the protrusion connected with the one face of the metal foil is provided with a limiting part, and the diameter of a circumscribed circle of the cross section of the limiting part is smaller than the skin depth of the metal foil; and the surface area of the part of the protrusion above the limiting part is larger than the surface area of other parts of the protrusion.

Abstract: The present disclosure relates to the technical field of plasma cleaning, and provides a plasma cleaning head for an optical member and a plasma cleaning device, including a plasma circulation assembly having a hollow shape and a lens frame mounted on the plasma circulation assembly, wherein the plasma circulation assembly is provided with an outlet port which is larger than an ejection port adapted to eject a plasma and is adapted to diffuse the plasma, and the lens frame is in communication with and surrounds the outlet port, and the lens frame is adapted to embed an optical lens body so that the optical lens body is arranged opposite to the outlet port to help improve dispersion and stability of the plasma flowing from the outlet port to the optical lens body, and helps to promote the energy absorption of the plasma by the optical lens body.

Abstract: System and method to perform targeted image adjustments starts with a processor receiving a media content item and identifies an image adjustment parameter and an adjustment value based on the media content item. Processor generates an adjusted media content item using the image adjustment parameter and the adjustment value and causes an adjustment interface to be displayed by a display of a user device. The adjustment interface can comprise the adjusted media content item and a selectable item associated with the image adjustment parameter. The selectable item can include settings. In response to receiving a selection of one of the settings of the selectable item, processor generates a final media content item based on the selection of the one of the settings, and cause the final media content item to be displayed by the display of the user device. Other embodiments are described herein.

Abstract: An electronic assembly includes a circuit board assembly and a liquid cold plate. The circuit board assembly includes a board, a first heat-generating component, and a second heat-generating component, where the first heat-generating component and the second heat-generating component are disposed on the board. The liquid cold plate includes a liquid inlet and a liquid outlet. The liquid cold plate includes a first cooling region and a second cooling region, where the second cooling region is closer to the liquid outlet than the first cooling region. A heat dissipation capability of the first cooling region is stronger than that of the second cooling region. A heat-generating density of the first heat-generating component is greater than that of the second heat-generating component, the first heat-generating component is thermally connected to the first cooling region, and the second heat-generating component is thermally connected to the second cooling region.

Abstract: Systems and methods for dual audio stream processing and transmission are provided. For example, a method may include establishing, by a video conference provider, a virtual event having a plurality of participants. Each participant may exchange one or more audio or video streams via the virtual event using a plurality of client devices. The method may also include receiving, by the video conference provider, a first audio stream from a first client device and receiving, by the video conference provider, a second audio stream from the first client device. The first audio stream may be processed via a first audio process and the second audio stream may be processed via a second audio process to generate a first processed stream and a second processed stream, respectively. The method may include transmitting, by the video conference provider, the first processed stream and the second processed stream to a second client device.

Abstract: A processing method for a heat exchanger includes: operation S100, preparing a heat exchange module, wherein the heat exchange module includes a plurality of flat tubes; operation S200, placing at least part of the heat exchange module on a first platform; operation S300, limiting the heat exchange module in a width direction of the first platform; operation S400, limiting the heat exchange module in a length direction of the first platform; operation S500, preparing a fin module; operation S600 or operation S700, using a pushing piece to push the heat exchange module to move the plurality of flat tubes by a preset distance along the width or length direction of the first platform; and operation S800, repeating operations S500 and S600, or repeating operations S500 and S700, until installation of N fin modules and one heat exchange module is completed, wherein N is greater than or equal to 2.

Abstract: A heat exchanger, the heat exchanger including flat tubes and fins. The flat tubes are provided at intervals along the thickness direction of the flat tubes. The flat tubes are internally provided with fluid channels extending along the longitudinal direction of the flat tubes. The fins are provided between adjacent flat tubes. A plurality of fins between adjacent flat tubes are provided at intervals along the transverse direction of the flat tubes. Each fin extends along the longitudinal direction of the flat tubes. Ventilation windows are provided on the fins.

Abstract: A heat exchanger includes: a first assembly including first and second tubes; a second assembly including third and fourth tubes; a plurality of heat exchange tubes including first and second heat exchange tubes; and fins. The first heat exchange tube is in communication with the first and third tubes, the second heat exchange tube is in communication with the second and fourth tubes, and the first heat exchange tube, the fin and the second heat exchange tube are arranged in a length direction of the first tube. Both widths of the first and second heat exchange tubes are smaller than a width of the first fin, which is smaller than a sum of the widths of the first and second heat exchange tubes. Projections of the first and second heat exchange tubes in a plane perpendicular to the length direction of the first tube are at least partially non-coincident.

Abstract: Skin-core structure fibers with both infrared and radar stealth, a preparation method therefor, and the use thereof are provided. The fibers are as follows: a core material of the skin-core structure fibers comprises the following raw materials in parts by weight: 10 parts of paraffin; 0.7-1.5 parts of an electromagnetic wave absorbent; and 1 part of a high-molecular polymer, wherein the electromagnetic wave absorbent is one or more of ferroferric oxide-intercalated graphene oxide, nano ferroferric oxide and carbon black, and wherein the skin-core structure fiber is obtained by spinning the core material with a skin-layer material.

Abstract: The present application provides a preparation method for a core-shell structured tungsten/gadolinium oxide functional fiber for X and ? ray protection, comprising: first preparing a core-shell structured tungsten/gadolinium oxide powder; preparing a W@Gd2O3/PP blended melt from the powder; and preparing a W@Gd2O3/PP composite fiber from the blended melt. The core-shell structured tungsten/gadolinium oxide functional fiber prepared by the method can play a role in synergistic protection in the aspect of radiation protection, eliminate a weak protection area, and effectively absorb secondary radiation generated by radiation. Secondly, the prepared functional fiber has the characteristics of no lead and light weight, and has good application prospects in the aspect of X and ? ray radiation protection.

Abstract: One example method for ad hoc client audio device support for virtual conferences includes transmitting, via a first communication channel by a virtual conference device connected to a virtual conference hosted by a virtual conference provider, a first signal, the first signal including connection information to enable a network connection between a remote client device and the virtual conference device; receiving, by the virtual conference device via a second communication channel, a request to connect from the remote client device; connecting to the remote client device using the second communication channel; receiving, via the connection to the remote client device, an audio stream from the remote client device, the audio stream captured by a microphone of the remote client device; and providing the audio stream to the virtual conference.

Abstract: An electronic assembly includes a circuit board assembly and a liquid cold plate. The circuit board assembly includes a board, a first heat-generating component, and a second heat-generating component, where the first heat-generating component and the second heat-generating component are disposed on the board. The liquid cold plate includes a liquid inlet and a liquid outlet. The liquid cold plate includes a first cooling region and a second cooling region, where the second cooling region is closer to the liquid outlet than the first cooling region. A heat dissipation capability of the first cooling region is stronger than that of the second cooling region. A heat-generating density of the first heat-generating component is greater than that of the second heat-generating component, the first heat-generating component is thermally connected to the first cooling region, and the second heat-generating component is thermally connected to the second cooling region.

Abstract: An image decoding method, a decoder and a storage medium are provided. The method includes: receiving code stream data, and parsing the code stream data to obtain a coding tree unit corresponding to the code stream data; parsing an i-th node of i-th layer corresponding to the coding tree unit to obtain i-th state parameter and i-th flag parameter corresponding to the i-th node; performing detection processing on the i-th node according to the i-th state parameter and the i-th flag parameter to obtain an i-th detection result; acquiring a (i+1)th node of a (i+1)th layer corresponding to the coding tree unit; continuing to perform detection processing on the (i+1)th node, and traversing all the nodes corresponding to the coding tree unit until all the coding unit data corresponding to the coding tree unit is obtained; and generating a decoded image corresponding to the code stream data.

Abstract: The present application provides a preparation method for a core-shell structured tungsten/gadolinium oxide functional fiber for X and ? ray protection, comprising: first preparing a core-shell structured tungsten/gadolinium oxide powder; preparing a W@Gd2O3/PP blended melt from the powder; and preparing a W@Gd2O3/PP composite fiber from the blended melt. The core-shell structured tungsten/gadolinium oxide functional fiber prepared by the method can play a role in synergistic protection in the aspect of radiation protection, eliminate a weak protection area, and effectively absorb secondary radiation generated by radiation. Secondly, the prepared functional fiber has the characteristics of no lead and light weight, and has good application prospects in the aspect of X and ? ray radiation protection.