Abstract: A photographing apparatus and an inspection device are provided. The photographing apparatus comprises a camera, a light supplementing structure, and a closed housing; the camera is provided with a lens, and positioned in and connected to the housing; the housing is provided with at least one photographing portion configured to be attached to an object to be photographed, and a space is formed between the lens and the photographing portion; the light supplementing structure is positioned in and connected to the housing, the light supplementing structure is configured to emit light to said object through the space and the photographing portion, and the lens is configured to capture an image of said object via the photographing portion. The inspection device comprises a rack and the photographing apparatus, and the housing is connected to the rack.

Abstract: A prosthesis system for minimally invasive femoral head replacement surgery includes a prosthesis having a first and second ends, a femoral head prosthesis being provided at the first end of the prosthesis, the prosthesis being provided with a nail hole, and the femoral head prosthesis partially protruding from the first end of the channel; an extension rod detachably and fixedly connected with the second end of the prosthesis; a guiding frame having a positioning sleeve and a guiding sleeve, the positioning sleeve being sleeved outside the extension rod and positioning the extension rod, after the extension rod is positioned, a center line of the guiding sleeve and a center line of the nail hole are on the same straight line; and a locking nail fixed to the nail hole of the prosthesis, both ends of the locking nail protruding out of the prosthesis.

Abstract: A silicon-based anode material and a preparation method thereof are provided. The silicon-based anode material includes a silicon-based core and a coating layer, the silicon-based core includes nano silicon and a lithium-containing silicon oxide, and the coating layer at least includes a polymer layer with —Si—O—Si— bonds. The preparation method of a silicon-based anode material includes (I) preparing a silicon-based core; and (II) coating a polymer layer. The silicon-based anode material includes high initial Coulombic efficiency and initial lithium intercalation capacity. The polymer layer with —Si—O—Si— bonds in the coating layer is insoluble in water, which avoid problems such as slurry sedimentation and poor coating performance, making the silicon-based anode material have good processing performance.

Abstract: A lithium-doped silicon oxide composite anode material with high initial Coulombic efficiency and a preparation method are provided, which relates to the field of anode materials for lithium batteries. The material includes nano-silicon, lithium silicate and a conductive carbon layer. A diffraction peak intensity of Li2Si2O5(111) with 2? being 24.7±0.2° in an XRD pattern of the lithium-doped silicon oxide composite anode material is I1, a diffraction peak intensity of Li2SiO3(111) with 2? being 26.8±0.3° in the XRD pattern is I2, and I1/I2<0.25. The material provided in the present invention has a specific phase composition ratio, thereby achieving the effect of high initial Coulombic efficiency and high specific capacity.

Abstract: An ultrasonic flow sensor assembly includes an ultrasonic flow tube, a first reflector, a second reflector, a first ultrasonic transducer, a second ultrasonic transducer, a temperature sensor, and a tube section for accommodating the ultrasonic flow tube. The ultrasonic flow tube includes a water inlet for fixing the first reflector, a water outlet for fixing the temperature sensor and the for fixing the second reflector, a sound channel, a first mounting hole for fixing the first ultrasonic transducer, and a second mounting hole for fixing the second ultrasonic transducer. An entrance of the sound channel is equipped with a chamfer which can make the flow more smoothly and restrain turbulent flow. An installation groove for installing a seal ring is defined at an external sidewall of the ultrasonic flow tube. The ultrasonic flow tube is made of plastic or ceramic.

Abstract: The present disclosure discloses an ultrasonic flow tube. The ultrasonic flow tube includes a water inlet, a water outlet, a sound channel, a first mounting hole for fixing a first ultrasonic transducer, and a second mounting hole for fixing a second ultrasonic transducer. The water inlet defines a first fixing room. The water outlet defines a second fixing room. An entrance and an exit are defined at opposite ends of the sound channel. The entrance is equipped with a chamfer which can make the flow more smoothly and restrain turbulent flow. An installation groove for installing a seal ring is defined at an external sidewall of the ultrasonic flow tube. The seal ring is configured to seal the ultrasonic flow tube and a peripheral structure of the ultrasonic flow tube. The ultrasonic flow tube is made of plastic or ceramic.