Abstract: A foldable mechanism and a foldable terminal. The foldable terminal includes the foldable mechanism. The foldable mechanism is conducive to a lightweight design of the foldable terminal. The foldable mechanism includes a base and a pressing plate assembly. The pressing plate assembly is mounted on the base. The pressing plate assembly includes a first pressing plate and a first pressing plate swing arm. The first pressing plate is an integrally formed structural member. A sliding portion of the first pressing plate swing arm is slidably connected to the first pressing plate, to implement slidable connection between the first pressing plate swing arm and the first pressing plate. A rotating portion of the first pressing plate swing arm is rotatably connected to the base, to implement rotatable connection between the first pressing plate swing arm and the base.

Abstract: The present disclosure discloses a gradient single-crystal positive electrode material, which has a chemical formula of LiNixCoyA1-x-yO2@mLiaZbOc, wherein 0<x<1, 0<y<1, 0<x+y<1, 0<m<0.05, 0.3<a?10, 1?b<4, and 1?c<15, A is at least one of Mn, Zr, Sr, Ba, W, Ti, Al, Mg, Y, and Nb, and Z is at least one of B, Al, Co, W, Ti, Zr, and Si. The atomic ratio of the content of Co on the surface of the single-crystal positive electrode material particle to the content of Ni+Co+A on the surface is greater than 0.4 and less than 0.8, and the atomic ratio of Co at a depth 10% of the radius from the surface of the single crystal positive electrode material particle is not less than 0.3; and the single-crystal positive electrode material particle has a roundness of greater than 0.4, and is free from sharp corners.

Abstract: Disclosed are a dynamic error measurement apparatus, system, and method for an electricity meter. The measurement apparatus includes a test signal generation unit configured to generate a voltage test signal and two-circuit current test signals, output the voltage test signal to a measurement unit, and output the two-circuit current test signals to the measurement unit and a current summation unit; the measurement unit configured to determine two-circuit electric energy values based on the voltage test signal and the two-circuit current test signals, and output the two-circuit electric energy values to a calculation control unit; the current summation unit configured to determine a combined current signal based on the two-circuit current test signals; and the calculation control unit configured to determine a total electric energy value based on the two-circuit electric energy values. The system includes a standard meter and a measurement apparatus.

Abstract: The present invention relates to a test system and method for a biomass-based blended fuel. The system comprises a feeding device, a mixing tank, a light-sensing device, and a control device; the feeding device comprises at least two fuel bottles; the fuel bottle is connected to the mixing tank by means of an oil pipe; the correspondingly connected oil pipe of each fuel bottle is provided with a flow valve; the light-sensing device comprises a laser disposed above the mixing tank, a light-reflecting mechanism disposed at the bottom in the mixing tank, and a light-sensing mechanism disposed at one side of the light reflecting mechanism; the output end of the light-sensing mechanism is signaled with the input end of the control device; the input end of the laser and the input end of the flow valve is separately signaled with the output end of the control device.

Abstract: A horizontal high-speed paper cup/paper bowl forming machine is provided. Specifically, the seven-station main rotation tower forming mechanism has a stamping die station, a paper feeding connection station, a first cup bottom preheating station, a second cup bottom preheating station, a bottom crimping station, a rolling station, and a main and auxiliary tower connection station. The seven-station auxiliary rotation tower forming mechanism has the main and auxiliary tower connection station, a cup rim lubrication station, a pre-crimping station, a first final crimping station, a second final crimping station, a cup outlet station, and a reserved vacant station. The stations arranged in sequence along the circumferential direction of the seven-station main rotation tower forming mechanism is in an opposite order to the stations arranged in sequence along the circumferential direction of the seven-station auxiliary rotation tower forming mechanism.

Abstract: The present invention relates to a test system and method for a biomass-based blended fuel. The system comprises a feeding device, a mixing tank, a light-sensing device, and a control device; the feeding device comprises at least two fuel bottles; the fuel bottle is connected to the mixing tank by means of an oil pipe; the correspondingly connected oil pipe of each fuel bottle is provided with a flow valve; the light-sensing device comprises a laser disposed above the mixing tank, a light-reflecting mechanism disposed at the bottom in the mixing tank, and a light-sensing mechanism disposed at one side of the light reflecting mechanism; the output end of the light-sensing mechanism is signaled with the input end of the control device; the input end of the laser and the input end of the flow valve is separately signaled with the output end of the control device.

Abstract: A horizontal high-speed paper cup/paper bowl forming machine is provided. Specifically, the seven-station main rotation tower forming mechanism has a stamping die station, a paper feeding connection station, a first cup bottom preheating station, a second cup bottom preheating station, a bottom crimping station, a rolling station, and a main and auxiliary tower connection station. The seven-station auxiliary rotation tower forming mechanism has the main and auxiliary tower connection station, a cup rim lubrication station, a pre-crimping station, a first final crimping station, a second final crimping station, a cup outlet station, and a reserved vacant station. The stations arranged in sequence along the circumferential direction of the seven-station main rotation tower forming mechanism is in an opposite order to the stations arranged in sequence along the circumferential direction of the seven-station auxiliary rotation tower forming mechanism.

Abstract: The invention discloses a metal nanoparticles/nanocellulose composites-based non-enzymatic electrochemical glucose sensor, comprising a three-electrode system composed of a working electrode, a counter electrode, and a reference electrode. The surface of the working electrode is coated with a metal nanoparticles/nanocellulose composites. The surface of the nanocellulose is modified with a strong cationic conducting polymer. The invention promotes the sensitivity and selectivity of glucose sensing with the linear range of 4 ?M-15 mM and the detection limit of 1.4 ?M. Therefore, the sensor possesses high sensitivity, high response speed, stable performance and high anti-interference ability. The preparation method of the metal nanoparticles/nanocellulose composites-based non-enzymatic electrochemical glucose sensor is simple and the cost is low. And enzyme is introduced into the preparation process.

Abstract: The invention discloses a metal nanoparticles/nanocellulose composites-based non-enzymatic electrochemical glucose sensor, comprising a three-electrode system composed of a working electrode, a counter electrode, and a reference electrode. The surface of the working electrode is coated with a metal nanoparticles/nanocellulose composites. The surface of the nanocellulose is modified with a strong cationic conducting polymer. The invention promotes the sensitivity and selectivity of glucose sensing with the linear range of 4 ?M-15 mM and the detection limit of 1.4 ?M. Therefore, the sensor possesses high sensitivity, high response speed, stable performance and high anti-interference ability. The preparation method of the metal nanoparticles/nanocellulose composites-based non-enzymatic electrochemical glucose sensor is simple and the cost is low. And enzyme is introduced into the preparation process.

Abstract: A multi-port fiber optic device (10) includes a dual fiber first collimator (12) which comprises a ferrule (18) with the input fiber (30) and the output fiber (32) therein, a gradient index rod lens (20) adhesively attached to the ferrule (18), and a filter (22) adhesively attached to the lens (20) opposite to the ferrule (18). A second collimator (14) is generally positioned in front of the first collimator (12), includes the similar components thereof while being symmetrical to the first collimator (12) along the middle portion of the whole assembly, except that one of the dual fiber of the second collimator (14) functions idle, thus the pigtail of such a fiber being removed.