Abstract: Disclosed is a method of preparing black tea extract with high theaflavin content, which utilizes an enzyme solution prepared by extracting polyphenol oxidase and laccase from bergamot yam (Dioscorea opposita foshou) or Chinese yam (Dioscoreae Rhizoma). Also disclosed is a method of treating liver fibrosis or kidney injury or atherosclerosis in a subject.

Abstract: Disclosed are a power determination method, a power determination apparatus, a terminal and a storage medium. The power determination method includes: acquiring a power ramping amount according to a power ramping count value and a power ramping step, where the power ramping count value includes a power ramping count value of a first transmission mode and a power ramping count value of a second transmission mode; and determining a transmission power according to the power ramping amount.

Abstract: Wireless communication includes a user equipment that transmits a message to a base station that includes a preamble and a payload corresponding to the preamble in a random access procedure. A parameter is determined based on the preamble, and a de-modulation reference signal (“DMRS”) sequence that is used for transmitting the payload is generated based on the parameter.

Abstract: Disclosed is a wireless detection device for quickly positioning a throw-fill stone falling depth and long-term settlement in blasting silt-squeezing construction, including a gravity ball and a signal receiving, processing and controlling system. The gravity ball is internally provided with test mechanisms, signal collecting and transmitting apparatuses and batteries. Also disclosed is a wireless detection method implemented using the above wireless detection device. The device and the method can detect the throw-fill stone falling depth and distribution situation in a blasting silt-squeezing construction process in real time, so that the effect evaluation and quality control of blasting silt-squeezing can be monitored in real time, the situation that the falling of throw-fill stones is incomplete can be acquired in time, monitoring data support can be provided for corresponding processing measures, and long-term settlement and other monitoring can be carried out.

Abstract: Information reported by one or more gateway nodes in a Bluetooth mesh network regarding an unprovisioned Bluetooth device is received. Provisioning data for the unprovisioned Bluetooth device is generated. A destination Bluetooth gateway node to which to issue the generated provisioning data is determined from among the one or more gateway nodes reporting the received information. The generated provisioning data is issued to the destination Bluetooth gateway node so that the destination Bluetooth gateway node can perform a provisioning operation directed at the unprovisioned Bluetooth device.

Abstract: The present application discloses methods, devices, and a system for controlling a Bluetooth device connected to a Bluetooth mesh network. A method includes receiving, by one or more processors associated with a server connected to a Bluetooth mesh network, a control request, wherein the control request is sent to the server by at least one Bluetooth gateway, and the at least one Bluetooth gateway is connected to the Bluetooth mesh network that received the control request sent by a user, and the control request corresponds to a request to control a to-be-controlled Bluetooth device, and controlling, by one or more processors, the to-be-controlled Bluetooth device via at least one Bluetooth gateway among a plurality of Bluetooth gateways connected to the Bluetooth mesh network, the to-be-controlled Bluetooth device being controlled based at least in part on the control request.

Abstract: A first set of device authentication parameters for a to-be-authenticated Bluetooth device in a Bluetooth mesh network is determined based at least in part on device identification information associated with the to-be-authenticated Bluetooth device. First authentication information is generated based at least in part on the first set of device authentication parameters and a first random number. The first authentication information and the first random number are forwarded to the to-be-authenticated Bluetooth device. Second authentication information and a second random number associated with the to-be-authenticated Bluetooth device are received, wherein the second authentication information is generated based at least in part on a second set of device authentication parameters and the second random number. The to-be-authenticated Bluetooth device is authenticated based at least in part on the second authentication information and the second random number.

Abstract: Information reported by one or more gateway nodes in a Bluetooth mesh network regarding an unprovisioned Bluetooth device is received. Provisioning data for the unprovisioned Bluetooth device is generated. A destination Bluetooth gateway node to which to issue the generated provisioning data is determined from among the one or more gateway nodes reporting the received information. The generated provisioning data is issued to the destination Bluetooth gateway node so that the destination Bluetooth gateway node can perform a provisioning operation directed at the unprovisioned Bluetooth device.

Abstract: An instruction that is receivable by a Bluetooth device during a waking period of the Bluetooth device is transmitted, wherein the waking period of the Bluetooth device occurs cyclically with a specified cycle length and the instruction indicates to the Bluetooth device that a communication data is forthcoming to the Bluetooth device. A data transmission mode for transmission of the communication data is selected based at least in part on a first length of time needed to transmit the communication data and a second length of time equal to the waking period of the Bluetooth device. The communication data is transmitted to the Bluetooth device using the selected transmission mode.

Abstract: Information reported by one or more gateway nodes in a Bluetooth mesh network regarding an unprovisioned Bluetooth device is received. Provisioning data for the unprovisioned Bluetooth device is generated. A destination Bluetooth gateway node to which to issue the generated provisioning data is determined from among the one or more gateway nodes reporting the received information. The generated provisioning data is issued to the destination Bluetooth gateway node so that the destination Bluetooth gateway node can perform a provisioning operation directed at the unprovisioned Bluetooth device.

Abstract: The present application discloses methods, devices, and a system for controlling a Bluetooth device connected to a Bluetooth mesh network. A method includes receiving, by one or more processors associated with a server connected to a Bluetooth mesh network, a control request, wherein the control request is sent to the server by at least one Bluetooth gateway, and the at least one Bluetooth gateway is connected to the Bluetooth mesh network that received the control request sent by a user, and the control request corresponds to a request to control a to-be-controlled Bluetooth device, and controlling, by one or more processors, the to-be-controlled Bluetooth device via at least one Bluetooth gateway among a plurality of Bluetooth gateways connected to the Bluetooth mesh network, the to-be-controlled Bluetooth device being controlled based at least in part on the control request.

Abstract: An instruction that is receivable by a Bluetooth device during a waking period of the Bluetooth device is transmitted, wherein the waking period of the Bluetooth device occurs cyclically with a specified cycle length and the instruction indicates to the Bluetooth device that a communication data is forthcoming to the Bluetooth device. A data transmission mode for transmission of the communication data is selected based at least in part on a first length of time needed to transmit the communication data and a second length of time equal to the waking period of the Bluetooth device. The communication data is transmitted to the Bluetooth device using the selected transmission mode.

Abstract: A first set of device authentication parameters for a to-be-authenticated Bluetooth device in a Bluetooth mesh network is determined based at least in part on device identification information associated with the to-be-authenticated Bluetooth device. First authentication information is generated based at least in part on the first set of device authentication parameters and a first random number. The first authentication information and the first random number are forwarded to the to-be-authenticated Bluetooth device. Second authentication information and a second random number associated with the to-be-authenticated Bluetooth device are received, wherein the second authentication information is generated based at least in part on a second set of device authentication parameters and the second random number. The to-be-authenticated Bluetooth device is authenticated based at least in part on the second authentication information and the second random number.

Abstract: Information reported by one or more gateway nodes in a Bluetooth mesh network regarding an unprovisioned Bluetooth device is received. Provisioning data for the unprovisioned Bluetooth device is generated. A destination Bluetooth gateway node to which to issue the generated provisioning data is determined from among the one or more gateway nodes reporting the received information. The generated provisioning data is issued to the destination Bluetooth gateway node so that the destination Bluetooth gateway node can perform a provisioning operation directed at the unprovisioned Bluetooth device.

Abstract: A vehicle automatic networking apparatus with a first component and a second replaceable component includes a first identity recognition module on the first component and a second identity recognition module on the second component. The second module in a networking mode transmits a low frequency wake up signal through a low frequency signal transmission circuit to wake up the first module. A first identity recognition module low frequency sensor circuit senses the low frequency wake up signal, and responds by transmitting an identity code of the first component through a low frequency signal transmission circuit. A second module low frequency signal receiving circuit receives and stores the first component identity code. In a following data transmission, the second module sends data with the identity code, and a first component receiving apparatus identifies it. The first and second modules are both located rearward of a second component connection hitch.

Abstract: A method for preparing 3,3-dimethylbutyraldehyde. The method includes: providing t-butyl chloride and vinyl acetate as raw materials, conducting a catalytic reaction between the t-butyl chloride and vinyl acetate to yield 1-chloro-3,3-dimethyl butyl acetate in the presence of a catalyst, the weight ratio of t-butyl chloride to vinyl acetate being 1:0.84-0.93; and controlling a temperature at between 100 and 110° C. for conducting hydrolytic disproportionation of 1-chloro-3,3-dimethyl butyl acetate in the presence of the catalyst to yield a mixture comprising 3,3-dimethylbutyraldehyde; and purifying the mixture by distillation to yield 3,3-dimethylbutyraldehyde, in which, the catalyst is aluminum trichloride, p-toluene sulphonic acid, or iron trichloride.

Abstract: A tire monitoring device includes a housing mounted within a cavity of a tire/wheel assembly. A sensor within the housing senses a condition within the cavity via an open passage in the housing. A hollow first tube extends away from the housing coaxial to an axis of the open passage. The first tube has an internal bore aligned with the open passage, and includes: a first tubular portion having a first cross sectional width; and a second tubular portion having a second cross sectional width smaller than the first cross sectional width. The second tubular portion further has a free end opening positioned in the cavity above a level of a liquid present in the cavity when the tire monitoring device is positioned at a lowest point in the cavity. The opening has a cross sectional width sized to prevent entrance of the liquid past the opening.

Abstract: A method for preparing 3,3-dimethylbutyraldehyde. The method includes: providing t-butyl chloride and vinyl acetate as raw materials, conducting a catalytic reaction between the t-butyl chloride and vinyl acetate to yield 1-chloro-3,3-dimethyl butyl acetate in the presence of a catalyst, the weight ratio of t-butyl chloride to vinyl acetate being 1: 0.84-0.93; and controlling a temperature at between 100 and 110° C. for conducting hydrolytic disproportionation of 1-chloro-3,3-dimethyl butyl acetate in the presence of the catalyst to yield a mixture comprising 3,3-dimethylbutyraldehyde; and purifying the mixture by distillation to yield 3,3-dimethylbutyraldehyde, in which, the catalyst is aluminum trichloride, p-toluene sulphonic acid, or iron trichloride.

Abstract: A tire monitoring device includes a housing mounted within a cavity of a tire/wheel assembly. A sensor within the housing senses a condition within the cavity via an open passage in the housing. A hollow first tube extends away from the housing coaxial to an axis of the open passage. The first tube has an internal bore aligned with the open passage, and includes: a first tubular portion having a first cross sectional width; and a second tubular portion having a second cross sectional width smaller than the first cross sectional width. The second tubular portion further has a free end opening positioned in the cavity above a level of a liquid present in the cavity when the tire monitoring device is positioned at a lowest point in the cavity. The opening has a cross sectional width sized to prevent entrance of the liquid past the opening.

Abstract: A vehicle automatic networking apparatus with a first component and a second replaceable component includes a first identity recognition module on the first component and a second identity recognition module on the second component. The second module in a networking mode transmits a low frequency wake up signal through a low frequency signal transmission circuit to wake up the first module. A first identity recognition module low frequency sensor circuit senses the low frequency wake up signal, and responds by transmitting an identity code of the first component through a low frequency signal transmission circuit. A second module low frequency signal receiving circuit receives and stores the first component identity code. In a following data transmission, the second module sends data with the identity code, and a first component receiving apparatus identifies it. The first and second modules are both located rearward of a second component connection hitch.