Abstract: A semiconductor device includes a high electron mobility transistor (HEMT) disposed in an annular active element region, and a resistor disposed in a passive element region surrounded by the annular active element region. The HEM includes a first portion of a compound semiconductor barrier layer stacked on a first portion of a compound semiconductor channel layer. A source electrode, a gate electrode, and a drain electrode are disposed on the first portion of the compound semiconductor barrier layer. The resistor includes a second portion of the compound semiconductor barrier layer stacked on a second portion of the compound semiconductor channel layer. An input terminal electrode is disposed on the second portion of the compound semiconductor barrier layer and located at the center of the passive element region.

Abstract: A smart wearable device has a signal calibration function executed by a signal calibration method and applied to a finger, a limb and/or a neck of a user. The smart wearable device includes at least one physiological signal detector, at least one pressure detector and an operation processor. The at least one physiological signal detector is adapted to abut against a detection area of the user for detecting a physiological signal. The at least one pressure detector is disposed around the at least one physiological signal detector and adapted to detect a pressure value of the detection area. The operation processor is electrically connected with the at least one physiological signal detector and the at least one pressure detector. The operation processor is adapted to optimize the physiological signal when the pressure value exceeds a predefined pressure threshold.

Abstract: An air valve structure arranged on a base comprises an air plug and a state-switching component. The air plug is arranged in an air chamber in an axial direction. The air plug includes a closing state to close the air hole, and an opening state to open the air hole. The state-switching component comprises a driving member that links the air plug, a shape-memory alloy (SMA) wire connected with the driving member, and at least one conductive member connected with the SMA wire. The driving member exerts an acting force to the air plug based on a condition of electricity provided by the conductive member for the SMA wire. The direction of the acting force is non-parallel with the axial direction and the air plug is moved and changed between the closing state and the opening state by the acting force.

Abstract: Provided is an electric cable driving mechanism having a self-return function. The electric cable driving mechanism includes a housing assembly, an electric motor, a three-stage transmission mechanism and a multifunctional nut, the three-stage transmission mechanism includes a coil spring assembly, the electric motor is fixed to the housing assembly, and the three-stage transmission mechanism and the multifunctional nut are mounted in the housing assembly; and the multifunctional nut includes two cable mounting grooves and is in transmission connection to the electric motor by means of the three-stage transmission mechanism. According to the electric cable driving mechanism having a self-return function of the present disclosure, the three-stage transmission mechanism is used, and outputs a larger force compared with two-stage transmission; and a split multifunctional screw rod is easy to mount, such that mounting of a coil spring during assembly is prevented from scratching the screw rod.

Abstract: A fracturing apparatus is provided. The fracturing apparatus includes a plunger pump, a transmission shaft, a main motor, an oil pipe, a first radiator and a noise reduction cabin. The main motor is spaced apart from the plunger pump, the plunger pump is connected with the main motor through the transmission shaft; the oil pipe is configured to be connected with the plunger pump; the first radiator is spaced apart from the plunger pump, the first radiator is configured to dissipate heat from oil in the oil pipe, the main motor, the first radiator and at least part of the oil pipe are all located inside the noise reduction cabin, and the plunger pump is located outside the noise reduction cabin.

Abstract: A fluidized solidified soil based on gold tailings includes the following raw materials in parts by mass: 75 parts to 80 parts of gold tailings, 5.2 parts to 13 parts of a dispersant solution, and 9 parts to 16 parts of a solidifying material. A preparation method includes the following steps: mixing the gold tailings with the dispersant solution, and then stirring to obtain a suspension slurry of the gold tailings; and adding the solidifying material, and stirring to obtain the fluidized solidified soil. In the present disclosure, the gold tailings are used as a main material, combined with a special dispersant solution and a special solidifying material, and a fluidized solidified soil is prepared with fluidity suitable for pumping and a certain strength after hardening. The fluidized solidified soil prevents the pollution caused by gold tailings landfilling, and can be used as a filling material for various construction projects.

Abstract: A two-photon stimulated emission depletion composite microscope using continuous light loss, the microscope comprising: a two-photon imaging unit (100) and an STED imaging unit (200), wherein for thicker samples, the two-photon imaging unit (100) can be used, and for regions of interest on the surface of samples, the STED super-resolution imaging unit (200) can be used. The two-photon stimulated emission depletion composite microscope using continuous light loss integrates two functions of STED imaging and two-photon imaging, so as to provide a powerful tool for cutting-edge biomedical research.

Abstract: The present invention relates a method for high-performance traceability query oriented to multi-chain data association, comprising: identifying a target transaction needing the traceability query; searching out all corresponding target chains based on cross-chain transaction data association; making query requests parallelly; and executing the query among the target chains according to a key value of the target transaction and returning query results. The blockchain traceability query method proposed by the present invention is different from serialized block data query conducted in the chain-type structure, and the disclosed cross-chain query operation can be parallelly executed, leading to improved efficiency of traceability query. Opposite to the conventional blockchain where blocks are used as nodes of chains, the present invention directly uses sub blockchains as nodes of the SRB.

Abstract: An antenna structure for a metal-cased electronic device includes a radiator, a feed portion, and a slit. The feed portion can feed signals into the radiator, the radiator includes a first end and a second end, the first end disposes a first radiation portion, the second end disposes a second radiation portion and a third radiation portion, the second radiation portion and the third radiation portion are coupled to each other to radiate a radiation signal at a first frequency band, the slit and the radiator is spaced at intervals, and the slit is coupled to the first radiation portion to radiate the radiation signal at a second frequency band. The present disclosure also provides an electronic device with the antenna structure.

Abstract: A one-way damping structure (1), comprising a spring (11), a drive element (12) and a friction force generation member, the spring (11) and the drive element (12) being connected such that the spring (11) is driven by means of the drive element (12); the spring (11) comprises a fixing portion (111), a connecting portion (112) and an annular portion (113), the connecting portion (112) being located between the fixing portion (111) and the annular portion (113) and connecting the fixing portion (111) to the annular portion (113), and the fixing portion (111) being fixed; and the annular portion (113) comprises at least half a turn for defining a spring opening which spirally extends in the circumferential direction, and slides relative to the friction force generation member so as to generate friction torque. Also disclosed is an adjusting assembly which comprises the described one-way damping structure (1).

Abstract: An antenna structure applied in a wireless communication device including a hinge, the antenna structure includes a feed portion, a first radiation portion, and at least one ground portion; an end of the first radiation portion is electrically connected to the feed portion, another end of the first radiation portion is spaced from the hinge with a gap; the antenna structure generates a radiation signal in at least one radiation frequency band when the feed portion feeds electrical current to the first radiation portion and the hinge couples the electrical current from the first radiation portion. A wireless communication device having the antenna structure is also provided.

Abstract: An antenna structure for a metal-cased wireless device which is largely impervious to interference when held in the hand includes a radiation portion, a feeding source, a first grounding portion, a second grounding portion, and a third grounding portion. The grounding portions are sequentially arranged at intervals, and all are electrically connected to the metal frame. The first end of the radiation portion is connected to the second grounding portion and the third grounding portion, the second end of the radiation portion is connected to the first grounding portion. The feeding source is electrically connected to the radiation portion and the first grounding portion and feeds current into the antenna structure. The present disclosure also provides a wireless communication device with the antenna structure.

Abstract: The present invention relates to a highly flexible, scalable multi-blockchain, hierarchical data-sharing and data-storing system, at least comprising a third-party blockchain system, a data-sharing blockchain system, and an application-layer client, wherein the data-sharing blockchain system performs data aggregation and hierarchical storage on shared data uploaded by the third-party blockchain system through accessing the data-sharing blockchain system, so as to allow the application-layer client to require the shared data from the data-sharing blockchain system. The disclosure herein creates a single reliable data-sharing blockchain apparatus based on blockchain systems, so as to facilitate aggregation of data coming from different blockchain systems, reduce node complexity and block data redundancy when data are acquired from multiple parties, and define different sharing rules for different data contents, thereby being adaptive to scenarios where data are shared among parties.

Abstract: The present invention relates to an implementation method for graphic-blockchain-orientated hybrid consensus, at least comprising: calling at least one module to generate a new data block and broadcast it; calling at least one module to check and validate the received new block based on predetermined rules; calling at least one module to generate a void block; and calling at least one module to update a committee member list. The existing graphic blockchain can only achieve probabilistic consensus, yet the present invention achieves deterministic consensus on graphic blockchain for the first time, thereby reaching consensus faster. The present invention decouples generation and consensus of blocks for the first time, so that the two parts can be designed separately in a modularized manner. The present invention provides the first totally decentralized hybrid consensus algorithm in the graphic blockchain. This is unachievable to many existing graphic blockchain such as IOTA and Obyte.

Abstract: A two-photon stimulated emission depletion composite microscope, comprising a two-photon imaging unit (100) and an STED imaging unit (200), wherein the two-photon imaging unit (100) can be used for a relatively thick sample, and the STED super-resolution imaging unit can be used for a region of interest on a surface of a sample, and the microscope makes light spots generated by an excitation light and a depletion light after being focused by an objective lens (OL) accurately coincide in a three-dimensional distribution. The two-photon stimulated emission depletion composite microscope (10) integrates two functions of STED imaging and two-photon imaging and makes the two types of light spots generated by an excitation light and a depletion light after being focused by an objective lens accurately coincide in a three-dimensional distribution, thereby providing a powerful tool for cutting-edge biomedical research.

Abstract: A smart sand includes raw sand particles, synthetic SiO2 particles attached to the raw sand particles, a first material attached to a first set of the synthetic SiO2 particles, a second material attached to a second set of the synthetic SiO2 particles, and a third material attached to the first material. Each of the first to third materials is different from each other.

Abstract: The present invention relates a method for high-performance traceability query oriented to multi-chain data association, comprising: identifying a target transaction needing the traceability query; searching out all corresponding target chains based on cross-chain transaction data association; making query requests parallelly; and executing the query among the target chains according to a key value of the target transaction and returning query results. The blockchain traceability query method proposed by the present invention is different from serialized block data query conducted in the chain-type structure, and the disclosed cross-chain query operation can be parallelly executed, leading to improved efficiency of traceability query. Opposite to the conventional blockchain where blocks are used as nodes of chains, the present invention directly uses sub blockchains as nodes of the SRB.

Abstract: The present invention provides a mobile device connection device and a mobile device remote plug-and-play system. The mobile device connection device includes a USB port connected to a mobile device and a communication module for wireless communication with a WiFi access point (AP), and the mobile device connection device performs wireless communication through the WiFi AP. Instant plugging and unplugging can be achieved, the distance limitation can also be overcome, and the user experience is good.

Abstract: A STED super-resolution microscope capable of quick beam combination is disclosed, which includes a STED imaging unit and a beam combination test unit. The excitation light and the depletion light are accurately combined by the beam combination test unit, so that the imaging light spots of the two light beams passing through the STED imaging unit can accurately coincide with each other, thereby obtaining a better super-resolution imaging effect.

Abstract: Provided herein are a lithium electrode and a sulfur electrode for batteries. The lithium electrode comprises lithium metal and a metal-coated fabric. The fibers of the metal-coated fabric are covered by a metal layer, on which the lithium metal is attached. The sulfur electrode comprises a sulfur composite and a nickel-coated fabric. The fibers of the nickel-coated fabric are covered by a nickel layer, on which the sulfur composite is attached. The lithium electrode can inhibit dendrite formation and the sulfur electrode can speed up the redox kinetics of soluble polysulfides.