Abstract: Disclosed are a low-mold deposit halogen-free flame-retardant thermoplastic polyamide composition, and a preparation method and use thereof. The composition includes the following components in parts by weight: 20 to 82 parts of a thermoplastic polyamide resin; 13 to 25 parts of a flame retardant; 1 to 5 parts of a flame-retardant synergist; 5 to 50 parts of a reinforcement material; and 0.5 to 5 parts of an adsorbent, where the flame retardant includes a phosphinate-based flame retardant and the adsorbent is an ethylene copolymer. In the present disclosure, an ethylene copolymer is added as an adsorbent and an addition amount of the ethylene copolymer is controlled, so that the prepared composition exhibits excellent flame resistance and electrical properties, and can effectively reduce the release of small molecules during the injection molding and greatly reduce an amount of the mold deposit generated during the injection molding.

Abstract: The present invention provides a polyamide composite, including the following components: 20 to 80 parts of a polyamide resin; 1 to 30 parts of a red phosphorus flame retardant; 0.01 to 10 parts of trimethallyl isocyanurate; and the polyamide composite has a cross-linked structure between polyamide molecules. By adding trimethallyl isocyanurate (TMAIC) for irradiation cross-linking treatment, and by the red phosphorus flame retardant, not only the polyamide composite can meet the needs of flame retardant, but also glow-wire ignition temperature (GWIT) and comparative tracking index (CTI) have been improved.

Abstract: The present invention relates to a flame-retardant nylon composite and use thereof, including components: 55 parts to 80 parts of a nylon resin; 1 part to 30 parts of a red phosphorus; and 0.01 part to 2 parts of a phenolic substance. According to the present invention, by adding a small amount of the phenolic substance to the red phosphorus flame-retardant nylon composite, phosphorus precipitation can be effectively inhibited, and a phosphine precipitation amount can be reduced to 30 ppm or less, while good electrical performances can be maintained, which is applicable in fields of connectors, contactors, etc. in electronic appliances.

Abstract: The present disclosure relates to a compound of Formula I or a non-toxic pharmaceutically acceptable salt or solvate thereof, wherein each R1, R2, R3, and R4 is independently selected from methyl (—CH3) and trideuteromethyl (—CD3), at least one of R1, R2, R3, and R4 is selected from trideuteromethyl (—CD3). The compound is a deuterated derivative of L-tetrahydropalmatine, which not only markedly improves pharmacological effects, but also significantly reduces cardiac side effects, liver toxicity, and remarkably decreases individual differences.

Abstract: The present disclosure relates to a compound of Formula I or a non-toxic pharmaceutically acceptable salt or solvate thereof, wherein each R1, R2, R3, and R4 is independently selected from methyl (—CH3) and trideuteromethyl (—CD3), at least one of R1, R2, R3, and R4 is selected from trideuteromethyl (—CD3). The compound is a deuterated derivative of L-tetrahydropalmatine, which not only markedly improves pharmacological effects, but also significantly reduces cardiac side effects, liver toxicity, and remarkably decreases individual differences.

Abstract: A heartbeat-based data synchronization method is disclosed. The method is applied to a distributed storage system, and at least one data block group is stored in the distributed storage system. The distributed storage system includes multiple storage devices, one device in the multiple storage devices is a primary device for storing the data block group, and other devices are secondary devices for storing the data block group. The primary device performs the method. The primary device obtains access status information of the data block group, determines a heartbeat time of the data block group according to the access status information of the data block group, and sends a data synchronization instruction to the secondary device according to the heartbeat time of the data block group, where the data synchronization instruction is used to instruct the secondary device to synchronize data.

Abstract: A method of tuning a controller area network (CAN) communication model includes: measuring a CAN signal waveform, dividing the CAN signal waveform into a steady period and a dynamic period, determining a parameter for the steady period, determining a parameter for the dynamic period, modeling a CAN line using the parameter for the steady period and the parameter for the dynamic period, and performing error analysis on the CAN line.

Abstract: A heartbeat-based data synchronization method is disclosed. The method is applied to a distributed storage system, and at least one data block group is stored in the distributed storage system. The distributed storage system includes multiple storage devices, one device in the multiple storage devices is a primary device for storing the data block group, and other devices are secondary devices for storing the data block group. The primary device performs the method. The primary device obtains access status information of the data block group, determines a heartbeat time of the data block group according to the access status information of the data block group, and sends a data synchronization instruction to the secondary device according to the heartbeat time of the data block group, where the data synchronization instruction is used to instruct the secondary device to synchronize data.

Abstract: A method of tuning a controller area network (CAN) communication model includes: measuring a CAN signal waveform, dividing the CAN signal waveform into a steady period and a dynamic period, determining a parameter for the steady period, determining a parameter for the dynamic period, modeling a CAN line using the parameter for the steady period and the parameter for the dynamic period, and performing error analysis on the CAN line.