Abstract: An electrical connector is disclosed that comprises at least two opposing walls between which a passageway is defined for receiving a contact pin, wherein the walls have a width of about 500 micrometers or less and are formed from a polymer composition that comprises a polymer matrix containing at least one polymer having a glass transition temperature of about 30° C. or more in an amount of 30 wt. % or more of the composition. The polymer composition exhibits a dielectric constant of about 4 or less and a dissipation factor of about 0.02 or less, as determined at a frequency of 10 GHz.

Abstract: A thermal-power power electronic direct-hung energy-storage plant backup power system includes a thermal-power grid connection startup/standby unit, a power electronic energy-storage switching unit and a thermal-power plant unit. The thermal-power grid connection startup/standby unit is connected to the power electronic energy-storage switching unit and the thermal-power plant unit, respectively. The power electronic energy-storage switching unit is connected to the thermal-power plant unit.

Abstract: A developing cartridge includes: a cartridge body for accommodating developers; a driving part at a first end in a first direction; a developing roller rotatable about a rotation axis extending along the first direction and positioned at a third end in a second direction; a storage medium for storing information; an electrical contact surface electrically connected to the storage medium and fixed relative to the cartridge body, and a lifting element configured to lift up the cartridge body in the third direction. The electrical contact surface is positioned at the first end in the first direction and is farther away from the developing roller relative to the driving part. The lifting element is farther away from the developing roller in the second direction away from the driving part.

Abstract: The present disclosure relates to the technical field of computers. Disclosed are a digital currency transaction method and system and a digital currency card application apparatus. A specific embodiment of the method comprises: after receiving a transaction request sent by a second transaction device, a digital currency card application apparatus of a first transaction device acquiring a current power state of the first transaction device; and performing digital currency transaction with the second transaction device according to a transaction rule corresponding to the current power state of the first transaction device. According to the embodiment, the power state of a mobile intelligent terminal can be acquired, and transaction operations of the payment and the receipt on the digital currency in scenarios of power-on with power available, power-off with power available, and power-off without power available can be realized on the basis of the power state of the mobile intelligent device.

Abstract: The present application relates to the technical field of digital currency, and discloses a digital currency payment method and device. One specific embodiment of the method comprises: establishing a communication connection with a payee device through near field communication; acquiring a battery power of a device carrying a payment chip, when the payment chip enters a payment state based on the established communication connection; and powering the payment chip for the payment of digital currency by electricity generated in an antenna coil of the payment chip through a near field communication alternating magnetic field of the payee device, when the battery power is insufficient to support the payment of digital currency.

Abstract: Provided is an intake bypass recirculation structure capable of silencing, including: an intake bypass recirculation structure body and a structure-conducted silencing device. An intake bypass recirculation cavity is provided on the intake bypass recirculation structure body. An inlet of the intake bypass recirculation structure and an outlet of the intake bypass recirculation structure that are provided on the intake bypass recirculation structure body are each connected to the intake bypass recirculation cavity. The structure-conducted silencing device is disposed inside the intake bypass recirculation cavity. In this application, during working, noise generated by a compressor is transmitted into the intake bypass recirculation cavity via an inlet of the intake bypass recirculation structure, and transmitted outside via the outlet of the intake bypass recirculation structure.

Abstract: The invention relates to the field of sensing technology, and discloses a double-parameter in-situ sensor based on waveguide grating, a sensing system and a preparation method. The sensor comprises an optical waveguide substrate, wherein a first straight optical waveguide and a second straight optical waveguide are arranged in the optical waveguide substrate in parallel, two ends of first straight optical waveguide are respectively connected with a first transmission fiber and a second transmission fiber, two ends of second straight optical waveguide are respectively connected with a third transmission fiber and a fourth transmission fiber, a first Bragg grating is arranged on the first straight optical waveguide, a second Bragg grating and a third Bragg grating are separately arranged on the second straight optical waveguide, a micro air groove is arranged on the upper surface of optical waveguide substrate, positioned between the second Bragg grating and the third Bragg grating.

Abstract: Disclosed are a digital currency transaction method, apparatus and electronic device, and a computer-readable medium.

Abstract: Provided is a method for calibrating a deformation pressure of a large-volume press. The method for calibrating the deformation pressure of the large-volume press includes: depositing a conductive layer onto a surface of a bevel plug to obtain a conductive bevel plug; assembling the conductive bevel plug, a molybdenum pillar, a magnesium oxide tube, a magnesium oxide sample chamber, a magnesium oxide octahedron and a calibration standard material, placing a resulting system in the large-volume press, and subjecting the resulting system to a large-volume press pressure correction experiment.

Abstract: Provided are a read/write conversion circuit, and a write driver circuit. The read/write conversion circuit includes a read circuit and a write circuit. Difference input terminal of the read circuit are respectively connected to a local signal line and a complementary local signal line, and difference output terminal thereof are respectively connected to a global signal line and a complementary global signal line. Difference input terminal of the write circuit are respectively connected to the global signal line and the complementary global signal line, and difference output terminal thereof are respectively connected to the local signal line and the complementary local signal line. Difference input terminal of the write circuit receive the same data, and Difference output terminal of the write circuit output inverted data.

Abstract: A three-dimensional printing method is provided. The method comprises selectively forming a three-dimensional structure from a polymer composition. The polymer composition comprises a thermally conductive particulate material distributed within a thermoplastic polymer matrix, and further wherein the polymer composition exhibits a through-plane thermal conductivity of about 0.10 W/m-K or more.

Abstract: The present invention relates to the technical field of block chains, and discloses a data security management method, system and storage medium for smart contract based on block chain network, comprising storing information of at least one public key in asymmetric public and private keys synchronously when generating the smart contract; triggering a data management request, establishing block chain network communication, calling the smart contract to generate validation data, rendering timeliness management to the validation data, sending the same to a data management request end and calling at least one private key, signing the validation data, reorganizing the same with data to be managed and making corresponding management operations; data modifications caused by malicious attacks to data in the contract due to disclosure of the contract or other security defects are addressed, safety of data in the chains is efficiently promised and the present invention is of realistic utility value.

Abstract: The provided are a method, terminal, and system for updating a digital currency wallet, and relates to the field of computer technology. A specific implementation of the method includes: sending, based on user trigger, a query request about whether the digital currency wallet needs to be updated to a trusted platform; receiving a query result returned by the trusted platform; in the case that the query result indicates that the digital currency wallet needs to be updated, withdrawing a digital currency from the digital currency wallet, synchronizing offline transaction data of the digital currency wallet, and sending an update request to the trusted platform; receiving a target update instruction sent by the trusted platform, wherein the target update instruction indicates account data corresponding to the digital currency wallet; and updating the digital currency wallet based on the account data indicated by the target update instruction.

Abstract: A metal powder preparation system and method are provided. The metal powder preparation system includes a medium frequency smelting furnace, a homogeneous insulated quantitative pouring furnace, a precision-controlled liquid level temperature pouring ladle, and a plurality of groups of atomization mechanisms connected in sequence. The present application improves the preparation quality of the metal powder, so that the parameters such as the powder particle size, sphericity, fluidity, oxygen content, component distribution, and particle size distribution of the metal powder can all meet the requirements of high-quality metal additive manufacturing, achieving efficient and continuous preparation of the metal powder at the same time.

Abstract: The present disclosure provides a digital currency transaction method and system, and related transaction terminals, and relates to the field of computer technology. A specific implementation of the method includes: exchanging, by a first transaction terminal, user certificates with a second transaction terminal to verify user identities of the two parties after establishing a communication connection with the second transaction terminal, negotiating with the second transaction terminal to generate a transaction factor after confirming that the user identity verification of the two parties succeeds, and uploading first digital currency transaction information including the transaction factor to a first operating institution back-end system, and sending, by the first operating institution back-end system, the first digital currency transaction information to a second operating institution back-end system to complete the digital currency transaction.

Abstract: A customer interfacing with a credential manager may be enabled to request and obtain securely from the credential manager additional details related to a service transaction previously effected between the customer and a service provider using a customer transaction credential managed by the credential manager. To obtain such a detailed customer receipt for presentation to a customer, the credential manager may provide an authenticatable customer receipt request to the service provider that may include certain information indicative of an active session between the credential manager and an authenticated customer and/or certain information indicative of a trusted relationship between the credential manager and service provider. When a request is authenticated, the service provider may provide a detailed customer receipt to the credential manager in a format that may be presented to the customer but that may not be used by the credential manager to easily access details conveyed by the receipt.

Abstract: The present disclosure relates to the technical field of computers. Provided are a positioning and paying method, apparatus and system based on the Internet of Vehicles. A specific implementation of the method comprises: an in-vehicle client obtains position information of a vehicle on the basis of the Internet of Vehicles; and a management server determines a corresponding service entity for the vehicle on the basis of the position information, so as to automatically complete a fee payment operation by using a first digital currency wallet that is included in the in-vehicle client and a second digital currency wallet that is included in the service entity. Thus, the problems of a low degree of automation and a low payment efficiency caused by manual fee payment are overcome, thereby enhancing the user experience.

Abstract: Provided are a digital currency-based transaction method and apparatus, relating to the technical field of digital currency. A specific implementation includes: establishing a Near Field Communication (NFC) connection with a transaction receiver (S101); exchanging an interaction capability parameter with the transaction receiver by means of the NFC connection, and performing a transaction feature negotiation to obtain transaction features supported by both parties of a transaction (S102); and initiating the transaction according to the transaction features, and completing the transaction with the transaction receiver according to the transaction features (S103). The present disclosure has the following beneficial implications that a quick transaction can be realized, a transaction success rate is improved, and the transaction performance is optimized.

Abstract: A customer interfacing with a credential manager may be enabled to request and obtain securely from the credential manager additional details related to a service transaction previously effected between the customer and a service provider using a customer transaction credential managed by the credential manager. To obtain such a detailed customer receipt for presentation to a customer, the credential manager may provide an authenticatable customer receipt request to the service provider that may include certain information indicative of an active session between the credential manager and an authenticated customer and/or certain information indicative of a trusted relationship between the credential manager and service provider. When a request is authenticated, the service provider may provide a detailed customer receipt to the credential manager in a format that may be presented to the customer but that may not be used by the credential manager to easily access details conveyed by the receipt.

Abstract: A 5G system comprising at least one antenna element configured to transmit and receive 5G radio frequency signals and at least one electronic component is provided. The antenna element, the electronic component, or both, comprise a polymer composition that includes a liquid crystalline polymer that contains repeating units derived from naphthenic hydroxycarboxylic and/or dicarboxylic acids in an amount of about 10 mol. % or more. Further, the polymer composition exhibits a dielectric constant of about 5 or less and dissipation factor of about 0.05 or less at a frequency of 10 GHz.