Abstract: A method and an apparatus for determining hardness of raw water of a water softening device. The method includes: obtaining a correspondence between a geographical area and the hardness of raw water; and determining target hardness of raw water of the water softening device based on a target geographical area where the water softening device is located and the correspondence; the correspondence is obtained by detecting hardness of raw water of respective geographical areas and associating each of the respective geographical areas with a detection result of the hardness of raw water corresponding to each of the respective geographical areas.

Abstract: The present disclosure provides a water softening device. The water softening device includes a box body, an inner frame assembly, a top cover assembly, a regeneration assembly and a water softening assembly. A first accommodating chamber is formed inside the box body, a box opening communicating with the first accommodating chamber is formed at a top of the box body, the inner frame assembly is provided at the box opening of the box body; the top cover assembly is provided on an upper part of the inner frame assembly and connected to the inner frame assembly; the regeneration assembly is provided inside the first accommodating chamber and is detachably connected to the top cover assembly; and the water softening assembly is provided inside the first accommodating chamber and detachably connected to the inner frame assembly.

Abstract: A top cover component and a water softening device. The top cover assembly includes: a first frame body (110), a first top cover component (120) and a second top cover component (130). The first frame body (110) is formed with a first opening (52); the first top cover component (120) is connected to the first frame body (110) through a flexible member (112), and is switchable between an open state and a closed state; and the second top cover component (130) is connected to the first frame body (110) and located on a side of the first opening (52).

Abstract: A multimedia broadcast multicast service configuration method, a terminal, and a network-side device. The multimedia broadcast multicast service configuration method applied to the terminal includes: performing a configuration operation according to an indication of a network side, where the configuration operation is related to reception of a target MBMS; or autonomously performing a configuration operation and sending first information to a network side, where the first information includes first indication information that is used to indicate that the terminal has performed the configuration operation.

Abstract: A method for regenerating resin of a water softening plant including the following steps: controlling a backwashing assembly to suck a salt solution from a salt tank to wash the resin in a resin tank in the water softening plant through the salt solution; determining that washing of the resin by the salt solution is completed, and controlling the backwashing assembly to connect the resin tank with a raw water waterway, so as to obtain raw water from the raw water waterway to wash the resin in the resin tank; and the backwashing assembly is used for executing forward washing process or backwashing process.

Abstract: Disclosed is a fully immersed energy storage device, which includes a casing and a water pump. An insulation box is mounted inside the casing, and the insulation box is assembled with an assembly plate thereon. A mounting platform is mounted on the assembly plate and assembled with an annular rack. A rotating groove is provided between the mounting platform and the annular rack. Balls are placed in the rotating groove. The mounting platform is assembled with an assembly block, on which a rotating shaft is mounted. One end of the rotating shaft connects to a gear. The other end of the rotating shaft connects to a first assembly rod, to which a second assembly rod is connected. The second assembly rod connects to a fixed block, which is connected to an energy storage box. A motor base is mounted on the casing. A motor is mounted on the motor base.

Abstract: A method for detecting the performance of the water softening device includes: obtaining a correspondence between a water temperature and a pressure drop of a target flow line; determining a target pressure drop corresponding to a current test water temperature based on the correspondence between the water temperature and the pressure drop of the target flow line; and determining a performance detection result based on a numerical relationship between an actual pressure drop and the target pressure drop, where the target flow line is a flow line between a water inlet end and a water outlet end of the water softening device, and the actual pressure drop is a pressure drop of the target flow line under the current test water temperature.

Abstract: A method, apparatus and computer readable medium for a multi-user orthogonal frequency division multiplexing (OFDM) subcarrier allocation that improves detection performance of the integrated communication radar system. The performance of the integrated communication radar system is improved by: determining a pseudo-random subcarrier allocation manner for multi-user OFDM.

Abstract: A subcarrier determining method is performed by a target device. The method includes: determining a plurality of subcarriers corresponding to each of at least two communication devices at a same time domain location; wherein an interval between two adjacent subcarriers in the plurality of subcarriers is a target interval, and the communication device is at least one of a data receiving device or an echo receiving device.

Abstract: A fin field-effect transistor device with hybrid conduction mechanism, including a fin field-effect transistor, a second source region, and a second drain region; the fin field-effect transistor includes a substrate, a fin channel region, a first source region, and a first drain region; the height of the second source region is not lower than the height of the substrate between the first source region and the first drain region; the first source region, the first drain region and the second drain region are doped with first ions; the second source region is formed between the substrate and the first source region, the second drain region is formed between the substrate and the first drain region, the second source region is doped with second ions. This scheme can realize hybrid conduction of fin channel diffusion drift current and bottom channel band-to-band tunneling current, thus obtaining better ultra-steep switching characteristics.

Abstract: A split bearer control method and a related device are provided. The split bearer control method applied to a terminal includes: a target split bearer is configured for the terminal, a data duplication function is configured for the target split bearer, the target split bearer includes N transmission paths, and N is a positive integer greater than 2; the terminal receives split bearer indication signaling sent by a network-side device; and the terminal activates or deactivates the data duplication function in response to the split bearer indication signaling.

Abstract: This application provides a speaker apparatus includes: a speaker sound emission unit that includes a speaker diaphragm and configured to convert an electrical signal into a sound signal by using the speaker diaphragm; a horn includes a sound inlet and a sound outlet, the speaker sound emission unit is disposed on the sound inlet, and the horn is configured to amplify the sound signal and then propagate an amplified sound signal through the sound outlet; and a phase plug, configured to adjust a phase and/or an amplitude of the sound signal from the sound inlet; where relative locations of the speaker diaphragm and the phase plug remain unchanged to form an incompressible air cavity.

Abstract: Disclosed in the present invention is a polyether polyol refining method, comprising (1) neutralising or diluting crude polyether polyol to obtain a mixed solution; (2) flowing the mixed solution through a hydrophilic medium to aggregate same into a first density phase liquid and a second density phase liquid, the first density phase liquid being an aqueous solution containing alkaline metal ions and/or alkaline earth metal ions, and the second density phase liquid being polyether polyol; and (3) allowing the first density phase liquid to settle and separating same from the second density phase liquid to obtain refined polyether polyol. In the present refining method, using the hydrophilic medium for one-step removal of the alkaline ions and water in the polyether polyol simplifies the treatment steps, increases treatment efficiency, and can prevent polyether polyol loss; the obtained polyether polyol has low alkaline ion content and little odour.

Abstract: An application of maize raffinose synthase (ZrnRAFS) gene in maize to improve heat stress tolerance of crops is provided. The nucleotide sequence of the ZrnRAFS gene is shown in SEQ ID NO: 1, and the protein sequence encoded by the ZrnRAFS gene is shown in SEQ ID NO: 2. The ZrnRAFS gene is overexpressed in plants, raffinose is synthesized by using sucrose and galactinol, which increases the content of raffinose in maize leaves and improves the heat stress tolerance of maize.

Abstract: An output driver is disclosed that can include a delay generator configured to produce a plurality of delay signals in response to an input signal; a pre-driver configured to produce a plurality of control signals based on the plurality of shifted delay signals; and a main driver configured to couple to a channel with an asymmetric termination and provide an output signal at a node of the main driver based in response to the plurality of control signals, wherein the plurality of control signals provides for an asymmetric response in the main driver in response to the asymmetric termination. In some embodiments, an asymmetric switching sequence can be included. In some embodiments, a pull-up diode can be engaged. In some embodiments, the output driver is arranged to operate with core voltages and core transistors.

Abstract: Digital signal processing for mud pulse telemetry utilizes a variety of “On/Off” keying based modulation schemes, such as pulse width modulation (PWM) and pulse position modulation (PPM), to encode and/or decode information. A combination of PPM and PWM is disclosed that increases a bit rate while keeping a chip rate unchanged. The combination of PPM and PWM comprises determining a drilling condition and forming a message based on the drilling condition, forming a string of symbol values comprising the message, identifying a pulse width and a pulse start for the pulse based on a symbol value, providing a first pulse at a selected chip location, providing subsequent pulses to form the pulse width, and forming a quiet period at the end of the pulse width.

Abstract: This application provides a speaker apparatus includes: a speaker sound emission unit that includes a speaker diaphragm and configured to convert an electrical signal into a sound signal by using the speaker diaphragm; a horn includes a sound inlet and a sound outlet, the speaker sound emission unit is disposed on the sound inlet, and the horn is configured to amplify the sound signal and then propagate an amplified sound signal through the sound outlet; and a phase plug, configured to adjust a phase and/or an amplitude of the sound signal from the sound inlet; where relative locations of the speaker diaphragm and the phase plug remain unchanged to form an incompressible air cavity.

Abstract: Disclosed in the present invention is a polyether polyol refining method, comprising (1) neutralising or diluting crude polyether polyol to obtain a mixed solution; (2) flowing the mixed solution through a hydrophilic medium to aggregate same into a first density phase liquid and a second density phase liquid, the first density phase liquid being an aqueous solution containing alkaline metal ions and/or alkaline earth metal ions, and the second density phase liquid being polyether polyol; and (3) allowing the first density phase liquid to settle and separating same from the second density phase liquid to obtain refined polyether polyol. In the present refining method, using the hydrophilic medium for one-step removal of the alkaline ions and water in the polyether polyol simplifies the treatment steps, increases treatment efficiency, and can prevent polyether polyol loss; the obtained polyether polyol has low alkaline ion content and little odour.

Abstract: Digital signal processing for mud pulse telemetry utilizes a variety of “On/Off” keying based modulation schemes, such as pulse width modulation (PWM) and pulse position modulation (PPM), to encode and/or decode information. A combination of PPM and PWM is disclosed that increases a bit rate while keeping a chip rate unchanged. The combination of PPM and PWM comprises determining a drilling condition and forming a message based on the drilling condition, forming a string of symbol values comprising the message, identifying a pulse width and a pulse start for the pulse based on a symbol value, providing a first pulse at a selected chip location, providing subsequent pulses to form the pulse width, and forming a quiet period at the end of the pulse width.

Abstract: Systems and methods for digital signal processing are provided. A method includes mapping a symbol in a pulse sequence by using a pulse width and a pulse start in the symbol, reading a message using a symbol value for each symbol in a string of symbols, and modifying a drilling configuration according to the message. A device configured to perform the above method is also provided.