Abstract: A piston for an internal combustion engine comprising a piston body having a crown adjacent a skirt. Any of an outer crown surface of the crown, piston ring grooves in the crown, and/or the crown include a steel H11 alloy and/or a steel H13 alloy. The steel H11 or H13 material is applied in any technique such as a piston crown coating/cladding, fused overlay, powder cladding, welded on an outer crown surface of the crown, and/or included in the crown and/or skirt of a monolithic piston. The steel H11 or H13 material is applied with an additive manufacturing item, applied with a coating, buttering, or other surface modification to facilitate joining to the piston body. The application of the steel H11 or H13 material with a heat treatment to at least the piston crown creates an elevated temperature oxidation resistant high performance piston.

Abstract: Disclosed herein are impedance-based biosensor systems comprising an impedance-based biosensor having an electrode, a meter in electrical communication with the electrode, a processor in electrical communication with the impedance-based biosensor and the meter, and a memory storing instructions to be executed by the processor. The instructions can cause the impedance-based biosensor system to measure the impedance of the electrode, derive one or more electrical properties of the impedance-based biosensor from the impedance of the electrode, and calculate a viable cell count based on the one or more electrical properties.

Abstract: An electrolyte includes lithium tetrafluoroborate and a compound of Formula I where a mass percentage A of the lithium tetrafluoroborate satisfies 0.1%?A?2%, and a mass percentage B of the compound of Formula I satisfies 0.010%?B?20%.

Abstract: This disclosure provides a grass collection device and a mowing apparatus. The grass collection device is applied to the mowing apparatus. The grass collection device comprises a bracket, a rotary brush, and a ground-contacting roller. The bracket is movably installed on the mowing apparatus. The rotary brush is installed on the bracket and can rotate relative to the bracket. The ground-contacting roller is rotatably installed on the bracket and extends in a direction opposite to the bracket. When the ground-contacting roller contacts the ground, there is a gap between the rotary brush and the ground.

Abstract: An integrated robotic system and methods for delivery and on-demand tasks of magnetic devices in a body for different clinical applications are provided. The integrated robotic system includes a magnetic actuation device, a plurality of imaging devices, a delivery device, and at least one magnetic device. The magnetic actuation device includes a permanent magnet or an electromagnetic coil system, and a controller for controlling the magnetic device. The plurality of imaging devices include two or more imaging modalities for capturing images of the magnetic device and tracking locations of the magnetic device in the body. The magnetic device includes one or more selected from a millimeter-sized robot, a microrobot, a nanorobot, a microrobotic swarm, and particles or drugs that respond to a magnetic field and small enough to be delivered by the delivery device.

Abstract: A method of casting a camshaft including iron includes determining a cooling rate profile based on a chemical composition of the camshaft and a target bearing life of the camshaft. The method includes casting the camshaft including cooling the camshaft in a chiller based on the cooling rate profile. The method includes imparting the camshaft with a microstructure comprising carbide, ledeburite, pearlite, ausferrite, or combinations thereof.

Abstract: An electrode assembly includes a positive electrode plate, a negative electrode plate, and a separator. The positive electrode plate includes a positive electrode current collector, a first positive electrode active material layer, and a second positive electrode active material layer. The negative electrode plate includes a negative electrode current collector, a first negative electrode active material layer, and a second negative electrode active material layer. The electrode assembly includes a flat region and a bent region. The negative electrode plate includes a first bent section and a second bent section. The positive electrode plate includes a third bent section. The first bent section, the third bent section, and the second bent section are sequentially disposed away from a winding center.

Abstract: A method for predicting distributed regional generated power based on a stacked integrated model is provided. The predicting method takes the CNN network and the LSTM network as the basic models, and combines the multi-head-attention mechanism to carry out weighted fusion of comprehensive features, and the meta-model adopts the GRU network.

Abstract: An integrated robotic system and methods for delivery and on-demand tasks of magnetic devices in a body for different clinical applications are provided. The integrated robotic system includes a magnetic actuation device, a plurality of imaging devices, a delivery device, and at least one magnetic device. The magnetic actuation device includes a permanent magnet or an electromagnetic coil system, and a controller for controlling the magnetic device. The plurality of imaging devices include two or more imaging modalities for capturing images of the magnetic device and tracking locations of the magnetic device in the body. The magnetic device includes one or more selected from a millimeter-sized robot, a microrobot, a nanorobot, a microrobotic swarm, and particles or drugs that respond to a magnetic field and small enough to be delivered by the delivery device.

Abstract: The present application relates to an axle structure and a vehicle. The vehicle includes a chassis, and the axle structure is arranged on the chassis. The axle structure includes a pedestal, a pivot shaft, an axle and limiting structures. The pivot shaft is fixed to the pedestal. The middle of the axle is rotatably connected to the pivot shaft, so that two ends of the axle can rotate vertically relative to the pedestal. In the axle structure provided in the present disclosure, the pivot shaft is provided on the pedestal, and the axle is rotatably connected to the pivot shaft.

Abstract: A radar system includes a transmitter configured to transmit a radar signal, and a receiver configured to receive an echo signal obtained after the radar signal is reflected by a target, where a transmit antenna array of the transmitter and a receive antenna array of the receiver are used to form a virtual linear array and a virtual planar array, the virtual linear array includes a uniform linear array in a first direction, the virtual planar array includes a uniform planar array, and a first spacing between two adjacent array elements in the uniform linear array is less than a second spacing between two adjacent array elements in the first direction in the uniform planar array.

Abstract: An information verification method based on a cloud security technology is provided. Before transmitting to-be-verified information including user information, a terminal device performs encryption processing on the to-be-verified information by using random numbers and a public key issued by a verification server, to obtain to-be-verified ciphertext information, which is to be used throughout transmission for logging into a server of a third-party application. The server of the third-party application cannot decrypt the to-be-verified information and the to-be-verified information may be obtained only by the verification server. The verification server transmits an application login success message to the terminal device based on decryption processing on the to-be-verified ciphertext information. In this way, the server of the third-party application may be logged in to without exposing privacy information of a user to the third-party application, thereby improving the security of identity verification.

Abstract: This invention provides a nanobot, system and method for recanalization of a bodily tube. In one embodiment, said nanorobot comprises: a) a magnetic core; b) a mesoporous shell coated on said magnetic core; and c) an outer layer of a chemical for recanalization bound to said mesoporous shell; wherein said nanobot is adapted to respond to an external magnetic field to carry out motion for mechanical and chemical recanalization.

Abstract: A velocity ambiguity resolving method and an echo signal processing apparatus are provided. The method includes: calculating, for first echo signals respectively received by at least two receive antennas in the N receive antennas, a first estimate of a direction of arrival formed by the at least two receive antennas and a first target, where the first echo signals are echo signals formed after transmit signals sent by a same transmit antenna in a time division transmit mode are reflected by the first target; separately performing, by using the first estimate, angle compensation on M second echo signals received by a first receive antenna, to obtain M first compensated echo signals; and performing velocity estimation based on at least two first compensated echo signals, to obtain a velocity of the first target.

Abstract: An electrochemical apparatus includes a positive electrode plate and an electrolyte. The positive electrode plate includes a positive electrode active material layer. The positive electrode active material layer includes a positive electrode active material. The positive electrode active material includes a lithium composite oxide. The lithium composite oxide includes the lithium element and at least one element selected from the cobalt element, the nickel element, the manganese element, and the aluminum element. A surface layer of the positive electrode active material has a rock salt phase structure and includes the tungsten element. Based on a total mass of the positive electrode active material, a mass percentage of the tungsten element is B, where 0.01%?B?1%.

Abstract: An off-ground detection device applicable to a harvester. The off-ground detection device includes a frame and a travel mechanism, the travel mechanism is movably arranged on the frame, and the travel mechanism has a first position and a second position relative to the frame. When the travel mechanism is in the first position, the harvester stops operating, and when the travel mechanism is in the second position, the state of the harvester remains unchanged.

Abstract: A velocity measurement signal transmission and receiving method for an intelligent driving system includes generating a plurality of chirp signals for measuring moving velocities of one or more moving targets (301); and transmitting the plurality of chirp signals in a time-division multiplexing (TDM) repetition cycle by using M antennas (302), where the TDM repetition cycle includes one single-antenna transmit mode sub-cycle and L consecutive multi-antenna transmit mode sub-cycles.

Abstract: A radar system includes a transmitter configured to transmit a radar signal; and a receiver configured to receive an echo signal obtained after the radar signal is reflected by a target, where a transmit antenna array of the transmitter and a receive antenna array of the receiver are used to form a virtual linear array and a virtual planar array, the virtual linear array includes a uniform linear array in a first direction, the virtual planar array includes a uniform planar array, and a first spacing between two adjacent array elements in the uniform linear array is less than a second spacing between two adjacent array elements in the first direction in the uniform planar array.

Abstract: This disclosure provides a signal processing method and apparatus. The method includes: obtaining Nr1×M1 signals, where the Nr1×M1 signals are echo signals of M1 signals that are sent by a radar to a target in a SIMO mode; obtaining Nt×Nr2×M2 signals, where the Nt×Nr2×M2 signals are echo signals of M2 signals that are sent by the radar to the target in a MIMO mode; performing first signal processing on the Nr1×M1 signals to obtain first processing data, where the first signal processing includes sequentially performing range FFT analysis, linear prediction, and Doppler FFT analysis; performing second signal processing on the Nt×Nr2×M2 signals to obtain second processing data, where the second signal processing includes range FFT analysis and Doppler FFT analysis; and performing velocity matching ambiguity resolution processing based on the first processing data and the second processing data.

Abstract: The present application relates to an axle structure and a vehicle. The vehicle includes a chassis, and the axle structure is arranged on the chassis. The axle structure includes a pedestal, a pivot shaft, an axle and limiting structures. The pivot shaft is fixed to the pedestal. The middle of the axle is rotatably connected to the pivot shaft, so that two ends of the axle can rotate vertically relative to the pedestal. In the axle structure provided in the present disclosure, the pivot shaft is provided on the pedestal, and the axle is rotatably connected to the pivot shaft.