Abstract: A bone conduction speaker is provided herein. The bone conduction speaker may include a magnetic circuit component for providing a magnetic field, a vibration component located in the magnetic field, and a case. At least a part of the vibration component may convert an electrical signal into a mechanical vibration signal. The case may include a case panel facing a human body side and a case back opposite to the case panel, and accommodate the vibration component that causes the case panel and the case back to vibrate. A vibration of the case panel may have a first phase, and a vibration of the case back may have a second phase. When frequencies of the vibration of the case panel and the case back are within 2000 Hz to 3000 Hz, an absolute value of a difference between the first and the second phase(s) may be less than 60 degrees.

Abstract: This application discloses a protection circuit associated with a battery management system (BMS). The protection circuit includes a first protection module and a freewheeling module. The first protection module is connected in parallel to a first switch module of the BMS, and the freewheeling module is connected in parallel to a load module of the BMS. The first protection module switches to a charging state when the first switch module is turned off to stabilize a voltage between a first terminal of the first switch module and a second terminal of the first switch module. The freewheeling module is turned on when the first switch module is turned off to stabilize a voltage between the first switch module and the second switch module. The protection circuit mitigates risks of breakdown of the first switch module, and prevents a parasitic inductance from limiting a switching frequency of the first switch module.

Abstract: The present disclosure discloses an acoustic device and a method for determining a transfer function thereof. The acoustic device includes a sound production unit, a first detector, a processor, and a fixing structure. The sound production unit is configured to generate a first sound signal based on a noise reduction control signal. The first detector is configured to obtain a first residual signal including a residual noise signal formed by superposition of an environmental noise and the first sound signal at a location of the first detector. The processor is configured to estimate a second residual signal at a target spatial location that is closer to the ear canal than the first detector, and update the noise reduction control signal based on the second residual signal. The fixing structure is configured to place the acoustic device at a location near a user's ear but not blocking the ear canal.

Abstract: A vehicle braking energy recovering method includes obtaining current location information of a vehicle, determining a current road scenario based on the current location information of the vehicle, determining the current road scenario based on a mapping relationship between a road scenario and a weight, determining a safe distance and a safe speed of the vehicle based on the weight, determining a target torque based on the safe distance and the safe speed of the vehicle, and controlling, based on the target torque, a motor of the vehicle to recover braking energy.

Abstract: A cover plate assembly, a wind power tower tube, and a wind turbine. The cover plate assembly comprises: a drive component, comprising a swing rod (6) provided with a first limiting component (3); and a cover plate (8), suitable for rotating between a first position and a second position along with rotation of the swing rod (6), the cover plate (8) being provided with a guide component (4), and the guide component (4) moving along the swing rod (6) in a swinging process of the swing rod (6). At the second position, the guide component (4) is in limiting fit with the first limiting component (3), so as to limit the swing rod (6) to drive the cover plate (8) to move back towards the first position; and when the cover plate (8) rotates towards the second position, matching between the first limiting component (3) and the guide component (4) can prevent the cover plate (8) from continuing rotating.

Abstract: A preparation method of bimetallic catalysts based on anthracene frameworks and use thereof in olefin polymerization is reported. Anthrecene frameworks were introduced, heat resistance of the catalysts is improved, and by changing central metals and configurations of the frameworks, steric and electronic effects of the metal catalysts of this model can be adjusted and controlled conveniently, and polyolefin polymer materials of different structures and different properties can be prepared, the bimetallic catalyst can be used in ethylene homopolymerization for preparation of high density polyethylene, ethylene/1-octene copolymerization for preparation of polyolefin elastomers and ethylene/norbornene copolymerization for preparation of cycloolefin copolymers.

Abstract: The present invention discloses an amide compound containing substituted acetophenone structural fragments, having a structure shown by general formula I: The definitions of substituents in the formula are shown in the description. The compound of the present invention has broad-spectrum fungal activity, and has excellent control effects on cucumber downy mildew, wheat powdery mildew, corn rust, cucumber anthracnose, cucumber botrytis and tomato botrytis.

Abstract: Disclosed are substituted pyrazole compounds containing pyrimidinyl as shown in Formula I: The definitions of each of the substituents can be seen in the description. The compounds of present invention have a good spectrum of bactericidal, insecticidal and acaricidal activity, and have good control effect on downy mildew of cucumber, powdery mildew of wheat, corn rust, rice blast, cucumber anthracnosis and the like. The compounds of present invention also show good insecticidal activity.

Abstract: Disclosed are substituted pyrazole compounds containing pyrimidinyl as shown in Formula I: The definitions of each of the substituents can be seen in the description. The compounds of present invention have a good spectrum of bactericidal, insecticidal and acaricidal activity,and have good control effect on downy mildew of cucumber, powdery mildew of wheat, corn rust, rice blast, cucumber anthracnosis and the like. The compounds of present invention also show good insecticidal activity.

Abstract: A ZIGBEE network-based data transmission method used to resolve a problem, that when a ZIGBEE network to which interference is relatively large is used to perform data transmission, a relatively low success rate of data transmission may be caused. The method includes, when detecting that a current working channel is interfered, acquiring, by a first routing node, interference energy intensities of remaining channels, determining that channels whose interference energy intensities are less than a first threshold are available switching channels, and sending a channel report message to an upper-layer routing node, where the channel report message includes all available switching channels, receiving a channel switching message sent by the upper-layer routing node, and switching to a target switching channel indicated by the channel switching message and receiving data using the target switching channel.

Abstract: Disclosed is a substituted pyrimidine compound having a structure as represented by formula PY. See the description for the definition of each substituent in the formula. The compound of the present invention provides broad-spectrum bactericidal, pesticidal, and acaricidal activities, provides great control effects against plant diseases such as cucumber downy mildew, corn rust, wheat powdery mildew, rice blast, and cucumber gray mold, specifically provides improved control effects against cucumber downy mildew, corn rust, wheat powdery mildew, and rice blast, provides great control effects against aphid, carmine spider mite, diamondback moth, and armyworm, and acquires great effects at a minimal dosage. The compound of the present invention also provides characteristics such as a simplified preparation method.

Abstract: Disclosed are pyrazolyl pyrimidinamine compounds with structures as shown in Formula I: The definitions of each of the substituents can be seen in the description. The compounds of present invention have a broad spectrum of bactericidal, insecticidal and acaricidal activity, and have good control effect on downy mildew of cucumber, powdery mildew of wheat, corn rust, anthracnosis of cucumber and the like, and especially have better control effect on downy mildew of cucumber, powdery mildew of wheat and anthracnosis of cucumber. The compounds of present invention also show good insecticidal activity, part of the compounds, at very low doses, have excellent control effect on diseases caused by Plutella xylostella, armyworm, Myzus persicae, Tetranychus cinnabarinus etc.

Abstract: Disclosed are pyrazolyl pyrimidinamine compounds with structures as shown in Formula I: The definitions of each of the substituents can be seen in the description. The compounds of present invention have a broad spectrum of bactericidal, insecticidal and acaricidal activity, and have good control effect on downy mildew of cucumber, powdery mildew of wheat, corn rust, anthracnosis of cucumber and the like, and especially have better control effect on downy mildew of cucumber, powdery mildew of wheat and anthracnosis of cucumber. The compounds of present invention also show good insecticidal activity, part of the compounds, at very low doses, have excellent control effect on diseases caused by Plutella xylostella, armyworm, Myzus persicae, Tetranychus cinnabarinus etc.

Abstract: A ZIGBEE network-based data transmission method used to resolve a problem, that when a ZIGBEE network to which interference is relatively large is used to perform data transmission, a relatively low success rate of data transmission may be caused. The method includes, when detecting that a current working channel is interfered, acquiring, by a first routing node, interference energy intensities of remaining channels, determining that channels whose interference energy intensities are less than a first threshold are available switching channels, and sending a channel report message to an upper-layer routing node, where the channel report message includes all available switching channels, receiving a channel switching message sent by the upper-layer routing node, and switching to a target switching channel indicated by the channel switching message and receiving data using the target switching channel.

Abstract: Disclosed is a substituted pyrimidine compound having a structure as represented by formula PY. See the description for the definition of each substituent in the formula. The compound of the present invention provides broad-spectrum bactericidal, pesticidal, and acaricidal activities, provides great control effects against plant diseases such as cucumber downy mildew, corn rust, wheat powdery mildew, rice blast, and cucumber gray mold, specifically provides improved control effects against cucumber downy mildew, corn rust, wheat powdery mildew, and rice blast, provides great control effects against aphid, carmine spider mite, diamondback moth, and armyworm, and acquires great effects at a minimal dosage. The compound of the present invention also provides characteristics such as a simplified preparation method.

Abstract: This disclosure provides a direct attach cable interface component and device, a manufacturing method thereof. The direct attach cable interface component comprises a cable comprising multiple sub-cables inside of an coating, and a direct attach cable interface. The direct attach cable interface comprises a metal casing configured for providing a capacity space, an interface circuit board provided with a connection extension area for an electrical connection with the multiple sub-cables and disposed inside the capacity space, and an insulating attachment wrapped the connection extension area and prolonged to outside of the metal casing until covering a predetermined length of the coating of the cable, wherein the insulating attachment is consistent and made of essentially the same material and the part of multiple sub cables exposed in the metal casing is embedded in the insulating attachment.

Abstract: The invention relates to ether compounds with nitrogen-containing 5-member heterocycle, represented by formula (I): The groups are as defined as specification. The compounds of the present invention have broad-spectrum insecticidal activities, and they are very effective to lepidopterous pests, including Ostrinia nubilalis, sugarcane borer, summer fruit tortrix moth, Grapholitha inopinata, Lymantria dispar, Cnaphalocrocis medialis, Pyrausta nubilalis, Heliothis assulta, Grapholitha molesta, Plutella xylostella, Laphygma exigua, Prodenialitura and the like, especially more effective to Plutella xylostella and Laphygma exigua, and can have very good effects at very low doses. And the compounds of present invention have high activities to homopteran pests such as aphid. At the same time, some compounds of present invention have very good fungicidal activities, and can be used for preventing wheat powdery mildew, cucumber downy mildew, vegetable grey mould and the like.

Abstract: The invention relates to ether compounds with nitrogen-containing 5-member heterocycle, represented by formula (I): The groups are as defined as specification. The compounds of the present invention have broad-spectrum insecticidal activities, and they are very effective to lepidopterous pests, including Ostrinia nubilalis, sugarcane borer, summer fruit tortrix moth, Grapholitha inopinata, Lymantria dispar, Cnaphalocrocis medialis, Pyrausta nubilalis, Heliothis assulta, Grapholitha molesta, Plutella xylostella, Laphygma exigua, Prodenialitura and the like, especially more effective to Plutella xylostella and Laphygma exigua, and can have very good effects at very low doses. And the compounds of present invention have high activities to homopteran pests such as aphid. At the same time, some compounds of present invention have very good fungicidal activities, and can be used for preventing wheat powdery mildew, cucumber downy mildew, vegetable grey mould and the like.