Abstract: A transient electromagnetic device with variable shape and turns includes squares, a transmitting coil carrying frame, a transmitting coil, a turns-variable device, a current generator and a working power supply. The transmitting coil carrying frame is arranged inside the transmitting coil; the transmitting coil carrying frame is configured as a carrier of the transmitting coil, and configured for adjusting a side length of the transmitting coil and a shape of the transmitting coil; the square is configured for clamping and connecting the transmitting coil and the transmitting coil carrying frame to fix the transmitting coil to the transmitting coil carrying frame. The current generator is configured for generating transient current; the turns-variable device is configured for changing the turns of the transmitting coil; and the transmitting coil is configured for transmitting the transient current to a target area to be measured.

Abstract: The present application discloses a battery, and a related device, preparation apparatus thereof. The battery includes a battery cell, the battery cell including a pressure relief mechanism and at least two walls, the at least two walls including a first wall and a second wall that intersect with each other, the pressure relief mechanism being disposed at the first wall and being configured to, when an internal pressure or temperature of the battery cell reaches a threshold, be actuated to release the internal pressure; a thermal management component attached to the first wall and being configured to accommodate a fluid to cool the battery cell; and a support component attached to the second wall, and configured to support the battery cell; wherein the thermal management component is configured such that when the pressure relief mechanism is actuated, emissions discharged from the battery cell pass through the thermal management component.

Abstract: A wearable physiological measurement apparatus comprises a base, a bridge member, and a first and second support members movably coupled to the base and the bridge member to surround size-variable an opening for accommodating a care giver's finger therein. A measurement device is coupled to the base and with a probe projecting toward the opening for contacting the finger for vital sign measurement and monitoring. Resilient members are coupled between the base, the bridge member and the first and second support members to bias the base, the bridge member and the first and second support members moving toward each other to grip the finger to maintain proper contact of the probe to the finger.

Abstract: A method for separating a calcite-rich low-grade fluorite barite paragenic ore, includes the following steps: S1, crushing; S2, performing classification on a crushed ore to obtain a fine-grained ore, a medium-grained ore and a coarse-grained ore; S3, performing jigging gravity separation on the medium-grained ore and the coarse-grained ore to obtain first barite concentrates and jigging tailings; S4, performing color sorting on the jigging tailings to obtain calcite minerals and color sorting tailings; S5, combining the fine-grained ore and the color sorting tailings, and then performing ore grinding to obtain feeding materials in flotation; S6, performing flotation on the feeding materials in flotation to obtain fluorite concentrates and flotation tailings; S7, performing chute gravity separation on the flotation tailings to obtain second barite concentrates and chute tailings. The method achieves an effect of obtaining high-quality acid-grade fluorite concentrates (CaF2?98%).

Abstract: A method for separating a calcite-rich low-grade fluorite barite paragenic ore, includes the following steps: S1, crushing; S2, performing classification on a crushed ore to obtain a fine-grained ore, a medium-grained ore and a coarse-grained ore; S3, performing jigging gravity separation on the medium-grained ore and the coarse-grained ore to obtain first barite concentrates and jigging tailings; S4, performing color sorting on the jigging tailings to obtain calcite minerals and color sorting tailings; S5, combining the fine-grained ore and the color sorting tailings, and then performing ore grinding to obtain feeding materials in flotation; S6, performing flotation on the feeding materials in flotation to obtain fluorite concentrates and flotation tailings; S7, performing chute gravity separation on the flotation tailings to obtain second barite concentrates and chute tailings. The method achieves an effect of obtaining high-quality acid-grade fluorite concentrates (CaF2?98%).

Abstract: The present application discloses an adaptive finger size ring. The adaptive finger size ring in the present application includes: a first ring body, a second ring body, and two elastic devices. There is a clamping position between the first ring body and the second ring body, and the clamping position is used to clamp a finger. One end of the elastic device is connected to the first ring body, the other end is connected to the second ring body, and the two elastic devices are respectively located on two sides of the clamping position. The elastic device, the first ring body, and the second ring body form an annular shape. The elastic device is telescopic and has a tendency to shorten in length, so that the first ring body and the second ring body are in close contact with skin of the finger. Thus, a swelling feeling caused due to poor blood flow when the ring is worn for a long time can be avoided, and wearing comfort is improved.

Abstract: The present application discloses an adaptive finger size ring. The adaptive finger size ring in the present application includes: a first ring body, a second ring body, and two elastic devices. There is a clamping position between the first ring body and the second ring body, and the clamping position is used to clamp a finger. One end of the elastic device is connected to the first ring body, the other end is connected to the second ring body, and the two elastic devices are respectively located on two sides of the clamping position. The elastic device, the first ring body, and the second ring body form an annular shape. The elastic device is telescopic and has a tendency to shorten in length, so that the first ring body and the second ring body are in close contact with skin of the finger. Thus, a swelling feeling caused due to poor blood flow when the ring is worn for a long time can be avoided, and wearing comfort is improved.

Abstract: Provided is a User Datagram Protocol (UDP)-based control command transmission method, in which a sender sends a control command packet to a receiver based on a UDP; and the receiver sends an Acknowledgement (ACK) packet to the sender based on the UDP after receiving the control command packet. A sender and a receiver are also provided.

Abstract: A method for time synchronization between wireless devices comprises: obtaining a time difference corresponding to a single synchronization operation between a first wireless device and a second wireless device; performing validity filtering to the time difference corresponding to the single synchronization operation, and extracting valid time difference data; performing smoothing processing on valid time difference data corresponding to multiple times of the single synchronization operation within a preset time period, and obtaining an average time difference of the second wireless device relative to the first wireless device within the preset time period; adjusting system time of the second wireless device based on the obtained average time difference at an interval of the preset time period, so as to make the second wireless device time-synchronized with the first wireless device.

Abstract: The present invention discloses a synchronized audio playing method, apparatus, and system for playing audio synchronously. By outputting designated data using a designated data buffer area before arrival of the starting time point of synchronous playing so as to make an audio link in a stable state, the method shuns from the impact of factors like system process scheduling interruption and system hardware on synchronous playing, thereby enhancing the precision of synchronous playing; moreover, upon arrival of the starting time point of synchronous playing, by computing a tuning amount of the audio data in the local synchronization buffer area, adjusting the audio data in the local synchronization buffer area according to the tuning amount, and meanwhile performing output playing on the tuned audio data, the method achieves audio synchronization play.

Abstract: The present invention discloses a monazite and apatite paragenetic ore enrichment method. High-grade and high-recovery-rate monazite concentrate can be obtained by adopting the method through steps of ore grinding, floatation, magnetic separation and low-acid advanced leaching treatment and re-floatation. In this process, the applicable range of ore pulp temperature is wide, the process flow is short, the ore dressing conditions are mild, the energy consumption is small, the used diluted acid can be cyclically regenerated and used, the pollution is small, the environmental stress is small and the recovery rate of low-grade monazite and apatite paragenetic ores can be obviously improved.

Abstract: The present invention discloses a synchronized audio playing method, apparatus, and system for playing audio synchronously. By outputting designated data using a designated data buffer area before arrival of the starting time point of synchronous playing so as to make an audio link in a stable state, the method shuns from the impact of factors like system process scheduling interruption and system hardware on synchronous playing, thereby enhancing the precision of synchronous playing; moreover, upon arrival of the starting time point of synchronous playing, by computing a tuning amount of the audio data in the local synchronization buffer area, adjusting the audio data in the local synchronization buffer area according to the tuning amount, and meanwhile performing output playing on the tuned audio data, the method achieves audio synchronization play.

Abstract: A method for time synchronization between wireless devices comprises: obtaining a time difference corresponding to a single synchronization operation between a first wireless device and a second wireless device; performing validity filtering to the time difference corresponding to the single synchronization operation, and extracting valid time difference data; performing smoothing processing on valid time difference data corresponding to multiple times of the single synchronization operation within a preset time period, and obtaining an average time difference of the second wireless device relative to the first wireless device within the preset time period; adjusting system time of the second wireless device based on the obtained average time difference at an interval of the preset time period, so as to make the second wireless device time-synchronized with the first wireless device.

Abstract: The present disclosure discloses a playing method and a playing device. The playing method for a multiroom sound system includes that: a control channel between a master sound box and a slave sound box is established, wherein the control channel is independent of an audio stream channel or has a priority higher than that of the audio stream channel; during audio playing, when a command configured to pause playing operation is received, the command configured to pause the playing operation is notified to the slave sound box through the control channel; and when the command configured to pause the playing operation is received, data acquisition from a first buffer is stopped to pause the playing operation, wherein the first buffer is an audio buffer of the master sound box.

Abstract: Provided is a User Datagram Protocol (UDP)-based control command transmission method, in which a sender sends a control command packet to a receiver based on a UDP; and the receiver sends an Acknowledgement (ACK) packet to the sender based on the UDP after receiving the control command packet. A sender and a receiver are also provided.

Abstract: The present invention discloses a monazite and apatite paragenetic ore enrichment method. High-grade and high-recovery-rate monazite concentrate can be obtained by adopting the method through steps of ore grinding, floatation, magnetic separation and low-acid advanced leaching treatment and re-floatation. In this process, the applicable range of ore pulp temperature is wide, the process flow is short, the ore dressing conditions are mild, the energy consumption is small, the used diluted acid can be cyclically regenerated and used, the pollution is small, the environmental stress is small and the recovery rate of low-grade monazite and apatite paragenetic ores can be obviously improved.

Abstract: The present invention discloses a wireless digital communication method and a wireless digital communication system, relates to the technical field of wireless communication, and can increase the flexibility of communication in a wireless audio transmission system and the utilization ratio of resources of the system and effectively reduce the power consumption of the system.