Abstract: A fan assembly includes a fan blade assembly and a fan frame, and the fan blade assembly includes a fan blade frame having an inner surface and a outer surface, a middle tube with a first magnet block mounted at a bottom portion thereof, a bearing disposed within the middle tube, a shaft disposed within the bearing, one end of the shaft is disposed on the inner surface of the fan blade frame, fan blades disposed on outer surface of the fan blade frame, and a magnetic assembly disposed within the fan blade assembly, and a fan frame includes a support frame with a support tube extending therefrom, the middle tube is configured to insert into the support tube, a second magnet block disposed within the support tube, a motor assembly mounted to an exterior of the support tube, the motor assembly including a PCB board mounted to a bottom portion thereof, wherein the first magnet block and the second magnet block are configured to magnetically attract one another when the middle tube is placed into the support tube.

Abstract: A vehicle brake disc temperature monitoring unit includes (i) a temperature collection module, which collects temperature values near the brake disc that change over time during vehicle braking, (ii) a temperature estimation module, which uses an observation model and a state estimation model to estimate the temperature of the brake disc based on the temperature values collected by the temperature collection module and the estimated values of the actual temperature of the brake disc through the Kalman filtering process, and (iii) a control module, which adjusts and controls the braking state of the vehicle braking system through the estimated temperature values and the detection values of the temperature sensor.

Abstract: A battery and an electronic device are disclosed. The battery includes: a first bare cell portion and a second bare cell portion. The first bare cell portion has a first surface and a side surface connected to the first surface, the first surface is configured to face towards a same direction as that of an opening of a battery compartment of an electronic device when the battery is installed in the battery compartment, and the side face is configured to face towards an inner side surface of the battery compartment of the electronic device when the battery is installed in the battery compartment. The second bare cell portion is located on a side that the first surface faces, and an orthographic projection of the second bare cell portion on the first surface overlaps the first surface.

Abstract: The present application discloses a high-performance copper alloy tube and a preparation method thereof. In the present application, a copper alloy tube with high strength, high processing and forming capability, excellent pressure resistance, corrosion resistance, and high-temperature softening resistance is prepared by adding Sn, Ni, and P elements to Cu, adjusting the content and proportion of each element, and introducing a high proportion of ?3, ?9, and ?27 coincidence site lattice grain boundaries in combination with recrystallization treatment process. Meanwhile, elements Zr, Co, and B (optionally) are added on the basis of the above alloy components to further improve the performance of the copper alloy tube. The copper alloy tube of the present application meets the performance requirements of the high pressure-resistant and thin-walled seamless copper tube, and has broad application prospects in the field of heat exchange.

Abstract: Provided are a positive electrode active material and a preparation method thereof, a positive electrode plate, a secondary battery, a battery module, a battery pack, and an electric apparatus. The positive electrode active material includes a core containing LimAxMn1-yByP1-zCzO4-nDn, a first coating layer enveloping the core and containing a crystalline pyrophosphate LiaMP2O7 and/or Mb(P2O7)c, a second coating layer enveloping the first coating layer and containing an oxide M?dOe, and a third coating layer enveloping the second coating layer and containing carbon. The positive electrode active material of this application can reduce Li/Mn anti-site defects produced, reduce dissolving-out amount of manganese, lower the lattice change rate, increase the capacity of the secondary battery, and improve the cycling performance, high-temperature storage performance, and safety performance of the secondary battery.

Abstract: A positive electrode active material and a preparation method thereof, a positive electrode plate, a lithium-ion secondary battery, and a battery module, battery pack, and apparatus containing such lithium-ion secondary battery are provided. The positive electrode active material includes matrix particles and a coating layer covering an exterior surface of the matrix particle, where the matrix particle includes a lithium nickel cobalt manganese oxide, and the coating layer includes an oxide of element M1; the matrix particle is doped with element M2 and element M3, element M2 in the matrix particle is uniformly distributed, and element M3 in the matrix particle has a decreasing concentration from the exterior surface to a core of the matrix particle; and element M1 and element M3 are each independently selected from one or more of Mg, Al, Ca, Ba, Ti, Zr, Zn, and B, and element M2 includes one or more of Si, Ti, Cr, Mo, V, Ge, Se, Zr, Nb, Ru, Rh, Pd, Sb, Te, Ce, and W.

Abstract: A positive electrode active material and a preparation method thereof, a positive electrode plate, a lithium-ion secondary battery, and a battery module, battery pack, and apparatus containing such lithium-ion secondary battery are provided. The positive electrode active material includes matrix particles and a coating layer covering an exterior surface of the matrix particle, where the matrix particle includes a lithium nickel cobalt manganese oxide, and the coating layer includes an oxide of element M1; the matrix particle is doped with element M2 and element M3, element M2 in the matrix particle is uniformly distributed, and element M3 in the matrix particle has a decreasing concentration from the exterior surface to a core of the matrix particle; and element M1 and element M3 are each independently selected from one or more of Mg, Al, Ca, Ba, Ti, Zr, Zn, and B, and element M2 includes one or more of Si, Ti, Cr, Mo, V, Ge, Se, Zr, Nb, Ru, Rh, Pd, Sb, Te, Ce, and W.

Abstract: A positive electrode active material and a preparation method thereof, a positive electrode plate, a lithium-ion secondary battery, and a battery module, battery pack, and apparatus containing such lithium-ion secondary battery are provided. The positive electrode active material includes matrix particles and a coating layer covering an exterior surface of the matrix particle, where the matrix particle includes a lithium nickel cobalt manganese oxide, and the coating layer includes an oxide of element M1; the matrix particle is doped with element M2 and element M3, element M2 in the matrix particle is uniformly distributed, and element M3 in the matrix particle has a decreasing concentration from the exterior surface to a core of the matrix particle; and element M1 and element M3 are each independently selected from one or more of Mg, Al, Ca, Ba, Ti, Zr, Zn, and B, and element M2 includes one or more of Si, Ti, Cr, Mo, V, Ge, Se, Zr, Nb, Ru, Rh, Pd, Sb, Te, Ce, and W.

Abstract: This application discloses a positive electrode active material, including bulk particles and a coating layer applied on an exterior surface of each of the bulk particles, where the bulk particle includes a lithium composite oxide that contains element nickel and a doping element M1, and the coating layer includes an oxide of element M2. When the positive electrode active material is in a 11% delithiated state, average valences of element M1 and M2 are ?1 and ?1, respectively; when the positive electrode active material is in a 78% delithiated state, average valences of element M1 and M2 are ?2 and ?2, respectively; and ?2>?1, ?1=?2. Element M1 includes one or more of Si, Ti, Cr, Mo, V, Se, Nb, Ru, Rh, Pd, Sb, Te, Ce, and W, and element M2 is selected from one or more of Mg, Al, Ca, Zr, Zn, Y, and B.

Abstract: An image may be reconstructed from sensor data, which may include optical imaging data such as diffusion optical tomography (“DOT”) data. The sensor data are received by a computer system. A machine learning model is accessed with the computer system, where the machine learning model includes a first subnetwork that receives sensor data as an input and generates an intermediate image as a first output, and a second subnetwork that receives the first output from the first subnetwork and generates an enhanced image as a second output. The sensor data are input to the machine learning model using the computer system, generating an enhanced image as an output. The enhanced image may have higher spatial resolution, reduced noise, or other improved image quality. Structural images may be passed as an additional input to the second subnetwork of the machine learning model to increase the spatial resolution of the enhanced image.

Abstract: A positive electrode active material and a preparation method thereof, a positive electrode plate, a lithium-ion secondary battery, and a battery module, a battery pack, and apparatus containing the lithium-ion secondary battery are provided. The positive electrode active material includes secondary particles formed by agglomeration of primary particles, where the primary particles include a layered nickel-containing lithium composite oxide, and the nickel-containing lithium composite oxide includes a doping element; and when the positive electrode active material is charged from an 11% delithiated state to a 78% delithiated state at a rate of 0.1 C, a lattice of the primary particles has a maximum shrinkage rate satisfying ?amax?3.00% in an a-axis direction, and a maximum swelling rate satisfying ?cmax?3.02% in a c-axis direction.

Abstract: An electronic device and a method for dynamically adjusting an exposure parameter of a spectral sensor. The method includes: The electronic device determines whether a Clear value is less than or equal to a first threshold; and if the Clear value is less than or equal to the first threshold, the electronic device determines whether an analog gain of the spectral sensor reaches a second threshold; and if the analog gain of the spectral sensor reaches the second threshold, the electronic device extends an exposure time of the spectral sensor; or if the analog gain of the spectral sensor does not reach the second threshold, the electronic device increases the analog gain of the spectral sensor.

Abstract: A positive electrode active material and a preparation method thereof, a positive electrode plate, a lithium-ion secondary battery, and a battery module, battery pack, and apparatus containing such lithium-ion secondary battery are provided. The positive electrode active material includes matrix particles and a coating layer covering an exterior surface of the matrix particle, where the matrix particle includes a lithium nickel cobalt manganese oxide, and the coating layer includes an oxide of element M1; the matrix particle is doped with element M2 and element M3, element M2 in the matrix particle is uniformly distributed, and element M3 in the matrix particle has a decreasing concentration from the exterior surface to a core of the matrix particle; and element M1 and element M3 are each independently selected from one or more of Mg, Al, Ca, Ba, Ti, Zr, Zn, and B, and element M2 includes one or more of Si, Ti, Cr, Mo, V, Ge, Se, Zr, Nb, Ru, Rh, Pd, Sb, Te, Ce, and W.

Abstract: Provided is an imidazotriazine thiobenzamide derivative of formula (I), A preparation method for the imidazotriazine thiobenzamide derivative, and a use of the imidazotriazine thiobenzamide derivative or an isomer, a pharmaceutically-acceptable salt, or a prodrug thereof in the preparation of drugs for the treatment of cancer are also provided.

Abstract: A thioamide derivative of formula (I) and a preparation method thereof: An application of the thioamide derivative, or an isomer, a pharmaceutically-acceptable salt, or a prodrug molecule thereof in the preparation of a drug for the treatment of cancer is also provided. The thioamide derivative is a new compound with high antitumor activity, and can be used for antitumor therapy alone or in combination with other drugs.

Abstract: This application discloses a positive electrode active material, including secondary particles and a coating layer applied on an exterior surface of each of the secondary particles, where the secondary particle includes a lithium transition metal oxide that contains a doping element M1, the coating layer includes an oxide of element M2, M1 is selected from one or more of Si, Ti, Cr, Mo, V, Ge, Se, Zr, Nb, Ru, Rh, Pd, Sb, Te, Ce, and W, and M2 is selected from one or more of Mg, Al, Ca, Ce, Ti, Zr, Zn, Y, and B; a relative deviation of local mass concentration of element M1 in the secondary particle is less than 20%; and the secondary particle from the core to the exterior surface of the particle includes a plurality of layers of primary particles arranged along radial direction of the secondary particle.

Abstract: A thioamide derivative of formula (I) and a preparation method thereof: An application of the thioamide derivative, or an isomer, a pharmaceutically-acceptable salt, or a prodrug molecule thereof in the preparation of a drug for the treatment of cancer is also provided. The thioamide derivative is a new compound with high antitumor activity, and can be used for antitumor therapy alone or in combination with other drugs.