Abstract: Embodiments of the present application provide a computed tomography imaging method and apparatus. The method includes pre-scanning an examined site by using an incomplete detector at a pitch factor of greater than 3 to obtain first data, axially scanning the examined site using the incomplete detector to obtain second data, stitching the first data and the second data to obtain third data; compensating the third data to obtain compensated third data, and performing image reconstruction by using the compensated third data to obtain a scanned image. Therefore, by performing two scans using an incomplete detector, stitching and compensating data obtained by the two scans, while reducing the total dose of X-rays, the integrity of the obtained data is ensured, and the image quality of the final obtained scanned image is maintained.

Abstract: Noise reduction method and device are provided. The method includes: obtaining different audio signals respectively collected by two audio collection devices, where one of the two audio collection devices has a specific positional relationship with an effective audio source; at least according to the different audio signals respectively collected by the two audio collection devices, determining effective signals corresponding to the effective audio source and noise signals corresponding to a noise source and obtaining determination results; and performing a noise reduction process on the audio signals collected by at least one of the two audio collection devices to retain the effective signals and reduce the noise signals, according to the determination results.

Abstract: A catheter retainer and a catheter-protecting device including the catheter retainer are disclosed. The catheter retainer defines a channel configured for passage of a pre-shaped section of a catheter therethrough. The channel includes a first channel section and a second channel section. The first channel section is configured for passage of a straight section of a tip of the catheter therethrough, and the second channel section is configured for passage of a bent section of the tip of the catheter therethrough. The catheter retainer including the first channel section and the second channel section is able to ensure that an angle of a pre-shaped end of the catheter can be maintained without decreasing for a long time, allowing an operator to directly use and deploy the catheter at a lesion site without having to subjecting it to a steam shaping process. This can reduce the time required for preoperative preparation.

Abstract: Embodiments of the present application provide a medical image processing method and apparatus and a medical device, the medical image processing apparatus including an acquisition unit, configured to acquire raw local projection data obtained by a detector after an object to be examined is scanned, a processing unit, configured to recover the raw local projection data to estimate first global data, a determination unit, configured to determine second global data according to the raw local projection data and the first global data, and a reconstruction unit, configured to reconstruct the second global data to obtain a diagnostic image.

Abstract: Described herein is a weft-knitted spacer fabric and a preparation method thereof, a polyurethane foam composite material including the fabric, a preparation method of the composite material and its use in shoe materials. The weft-knitted spacer fabric consists of an upper surface layer, intermediate spacer yarns, and a lower surface layer, and the upper surface and the lower surface layer are connected by the tuck of the spacer yarns in the upper surface and the lower surface layer to form a three-dimensional structure in an integrated manner. The different selected tuck needle changes the connecting distance and the number of connections of the tuck, and the thickness of the spacer fabric and the arrangement density of the spacer yarns are changed by the action of the upper and lower surface layers of elastic yarns.

Abstract: A catheter reinforcement layer (100) and a catheter (10). The catheter reinforcement layer (100) includes a spring component (110) and at least one axial component (120). The at least one axial component (120) extends along the spring component (110) from a proximal end to a distal end, and has at least one intersection with the spring component (110). According to the catheter reinforcing layer (100), by introducing one or more axial components (120) into a reinforcing layer of an existing spring component (110), the axial modulus of the catheter (10) is increased, thereby avoiding axial deformation or even breakage of the tubular body of the catheter (10) due to axial force.

Abstract: The automatic door opening and closing device includes: a housing having a mounting space formed therein; and a pushing and rotating assembly provided in the mounting space and having a push rod controlled to be telescopic and a guide rod which extends outwards from the mounting space and is controlled to be movable; wherein the push rod is configured to push open a door of the refrigerator when controlled to extend, and the guide rod is configured to drive the door of the refrigerator to rotate after the push rod pushes open the door of the refrigerator. By integrating the push rod and the guide rod in the mounting space inside the housing.

Abstract: A medical catheter and a method for fabricating it are disclosed. The medical catheter includes a catheter body including a proximal section and a distal section sequentially arranged along an axis. Stiffness of the proximal section is greater than stiffness of the distal section. The distal section includes a transition section and a flexible section from a proximal end to a distal end thereof. Stiffness of the flexible section is smaller than stiffness of the transition section. The stiffness of the transition section gradually decreases from a proximal end to a distal end thereof. A ratio of an axial length of the flexible section to an axial length of the transition section is 0.05-0.4. This axial stiffness design of the medical catheter can achieve a balance between its accessibility and support performance, which can result in better therapeutic outcomes of a surgical procedure.

Abstract: In a magnetic particle imaging reconstruction method based on a neural network constrained by a forward model, a system matrix is obtained through calibration, voltage data generated by a specimen is measured, collected data are transformed into a frequency-domain by Fourier transform, frequency features of data are screened by a signal-to-noise ratio threshold, a reconstruction network is built by a Pytorch to realize mapping from one-dimensional voltage data to a multi-dimensional magnetic particle concentration distribution, the system matrix is used as the forward model of magnetic particle imaging, and simulated voltage data is generated according to a reconstructed multi-dimensional magnetic particle concentration distribution, a difference between the simulated voltage data and input voltage data is calculated as a loss function for network parameter updating, a total variation regularization term is added to the loss function, and training parameters and regularization parameters are adjusted to achie

Abstract: A laundry treating apparatus is provided, which includes a laundry treating drum, and further includes a water supply valve, a water container member, an atomizer and a driving board. The water supply valve is connected to the atomizer by the water container member. An outlet of the atomizer is disposed toward an inner cavity of the laundry treating drum. A container structure is disposed on the water container member. The driving board is disposed in the container structure and is communicatively connected with the atomizer. The laundry treating apparatus can reduce manufacturing difficulty of a laundry treating apparatus having an atomizer, such that the laundry treating apparatus can fully utilize the atomization function of the atomizer.

Abstract: An operator for controlling electrically adjustable furniture includes a housing and an actuation panel movably supported in the housing to form a cover body. A circuit board is provided in the housing, and a main control unit for detecting an actuation signal is provided on the circuit board. A first switch for generating a first actuation signal and a second switch for generating a second actuation signal are provided between the actuation panel and the main control unit, and a third switch for generating a third actuation signal is provided between a bottom wall of the housing and the main control unit. The main control unit issues a first command when simultaneously detecting the first actuation signal and the second actuation signal, and the main control unit issues a second command when simultaneously detecting the first actuation signal, the second actuation signal, and the third actuation signal.

Abstract: Provided are a microorganism for producing a pantoic acid, and a construction method therefor and an application thereof. The microorganism for producing the pantoic acid is obtained by knocking out a gene in Escherichia coli and introducing an exogenous gene. The obtained microorganism is Escherichia coli that is registered in the China General Microbiological Culture Collection Center with an accession number of CGMCC No. 21699. A pantoic acid synthesis pathway has been opened up, and accumulation of the pantoic acid can be achieved in a fermentation process.

Abstract: Provided is a recombinant yeast expressing germacrene A synthetase or a fusion protein thereof, wherein the fusion protein is germacrene A synthetase and farnesyl pyrophosphate synthase. The recombinant yeast improves the yield of germacrene A, and is suitable for the industrialized production of ?-elemene and/or germacrene A.

Abstract: A clothing treatment apparatus includes a cabinet, and a water-containing assembly, a sprinkling mechanism and an atomization generator that are arranged in the cabinet. The water-containing assembly includes a water tank and a water diverting and blocking member arranged in the water tank, the water tank is connected to the sprinkling mechanism through a first delivery pipeline, the water tank is connected to the atomization generator through a second delivery pipeline, and the water diverting and blocking member is configured to change a sequence of the water injected into the water tank flowing to the atomization generator and flowing to the sprinkling mechanism.

Abstract: A clothing treatment apparatus includes a cabinet, and a water-containing assembly, a sprinkling assembly and an atomization generator that are arranged in the cabinet. The water-containing assembly includes a water tank and a plurality of delivery pipelines, the water tank is connected to the atomization generator through one of the delivery pipelines, and the atomization generator is configured to perform atomized washing on the clothing; the water tank is connected to the sprinkling assembly through the rest of the delivery pipelines, and the sprinkling assembly is configured to perform sprinkling washing on the clothing.

Abstract: A refrigerator with a slide rail wiring mechanism, comprising a compartment configured to open forward, and a drawer-type door, wherein the compartment comprises a bottom wall, a rear wall and two side walls, and the drawer-type door is provided with an electrical component; the slide rail wiring mechanism comprises a cable for supplying power to the electrical component and a first wiring box fixed in the compartment; the first wiring box is formed with a first receiving portion and a second receiving portion; the cable comprises a fixed section fixed in the first receiving portion and a movable section that may be at least partially received in the second receiving portion; the second receiving portion is disposed apart from the bottom wall, the second receiving portion comprises a top plate and a bottom plate, and the bottom plate is provided with drainage holes.

Abstract: The utility model belongs to the technical field of control of LED tree lights, and relates to a switch gang-control device based on LED tree lights. The device includes an LED tree body, in which a control mechanism for turning on or off the lights is disposed, and the on or off of the LED tree lights within a defined range is controlled in real time by means of the control mechanism and according to a wireless encoded signal. The gang control of a plurality of LED tree lights can be implemented; and the sending and receiving of wireless data is more user-friendly and intelligent by means of two-way wireless communication. A point-contact power supply solution is used to avoid a wire winding problem during assembly. A contact pin has an elastic design, such that effective contact can be ensured when the contact pin leans against a contact piece, making the mode of power supply more stable and reliable.

Abstract: A method for detecting a tension force defect of a steel cable includes the following steps: step S10: providing an excitation sensor on a first position of a steel cable to be detected and providing a detection sensor on a second position of the steel cable; step S20: obtaining a value of a tension force on the steel cable and obtaining a first display diagram corresponding to the value of the tension force; step S30: loading a white noise signal on the excitation sensor through a power amplifier; step S40: acquiring a detection signal collected by the detection sensor; step S50: uploading the detection signal to a personal computer (PC) and performing a Fast Fourier Transform (FFT) process on the detection signal; step S60: determining whether there is a defect in the steel cable, and if so, performing step S70; step S70: determining a defect position of the steel cable.

Abstract: An eye blink detection method and system are disclosed. The eye blink detection method comprises: photographing a face using a DVS camera to obtain a stream of DVS pixels; integrating DVS pixels of the stream of DVS pixels to form a plurality of DVS frames, wherein each of the plurality of DVS frames comprises a plurality of first and second color pixels, each being associated with one or more DVS pixels indicating a brightening event and each of the second color pixel being associated with one or more DVS pixels indicating a darkening event; and determining whether there exists an eye blink action in a DVS frame of the plurality of DVS frames, wherein the determining comprises: determining whether there exists a pattern in which a first and second color region are distributed one above the other in an eye region of the at least one DVS frame.

Abstract: Provided in the application is a refrigerator. The refrigerator may comprise: a cabinet having a cooling chamber and at least one storage chamber, and an air duct assembly installed on the cabinet. The air duct assembly has a plurality of air duct layers sequentially arranged in a longitudinal direction of the cabinet and each of the air duct layers has one or more air ducts.