Abstract: A method for making a carbon nanotube field emitter is provided. A carbon nanotube array and a cathode substrate are provided. The carbon nanotube array is heated to form a graphitized carbon nanotube array. A conductive adhesive layer is formed on a surface of the cathode substrate. One end of the graphitized carbon nanotube array is contact with the conductive adhesive layer. The conductive adhesive layer is solidified to fix the graphitized carbon nanotube array on the cathode substrate.

Abstract: The disclosure relates to a biomimetic insect. The biomimetic insect includes a trunk and at least two wings connected to the trunk. The wing includes a carbon nanotube layer and a vanadium dioxide layer (VO2) layer stacked with each other. Because the drastic, reversible phase transition of vanadium dioxide, the wing has giant deformation amplitude and fast response.

Abstract: The invention relates to a method for detecting the pre-ignition of an internal combustion engine comprising: integrating all instantaneous angular accelerations in a feature window to acquire integral values, and judging whether the internal combustion engine is pre-ignited according to the integral values and an pre-ignition threshold in a detection window; the feature window is an angle range corresponding to a top dead center of the compression stroke of the internal combustion engine to 3-5 consecutive signal teeth backward from the top dead center along the rotating direction of a crankshaft; the instantaneous angular accelerations correspond to the signal teeth in the feature window in a one-to-one manner.

Abstract: Provided are a hybrid distributed file system architecture structure, an applied file storage processing method, a dynamic migration method, and application thereof. The file storage processing method comprises: acquiring storage attributes of a file to be stored, wherein the storage attributes at least include a size of the file; determining, according to a pre-configured storage rule and the attributes of the file to be stored, in which distributed file system the file to be stored is stored; and storing the file to be stored in the determined distributed file system. The method further comprises migrating, according to a predetermined policy, a file that has been stored in a predetermined storage location. The device intelligently selects a file underlying storage policy according to file feature attributes to decide whether to migrate the file and to which file system the file is migrated so as to satisfy usage equalization of different file systems and also minimize performance degradation.

Abstract: A magnetism detection apparatus includes a detection device, at least one first locating device, and a central control device. The detection device includes an array of detection assemblies arranged in a same plane. The array of detection assemblies is configured to detect magnetic fields and output magnetic field signals corresponding to locations of the detection assemblies. The at least one first locating device is disposed on one of the detection assemblies to locate this detection assembly and output a first coordinate signal corresponding to this detection assembly. The central control device is communicatively and respectively connected to each of the detection assemblies and the at least one first locating device, and configured to process the magnetic field signals and the first coordinate signal.

Abstract: A resistive random access memory and a manufacture method thereof are provided. The resistive random access memory includes: a first electrode, a second electrode, a resistive layer between the first electrode and the second electrode, and at least one thermal enhanced layer; the thermal enhanced layer is adjacent to the resistive layer, and a thermal conductivity of the thermal enhanced layer is less than a thermal conductivity of the first electrode and a thermal conductivity of the second electrode.

Abstract: The present invention discloses a wiping-type sample sampling and feeding device, a card reading apparatus, and a gate machine apparatus. The wiping-type sample sampling and feeding device comprises a thermally desorbing portion for analyzing a substance; a wiping-type sampling portion for wiping the substance on a card or certificate and includes a first wheel, a second wheel and a wiping conveyor belt that travels between the first and second wheels along a first direction; and a card/certificate conveyor portion including a card carrying belt configured to convey a card or certificate along a second direction so that the card or certificate can contact with the wiping conveyor belt during conveyance of the card or certificate, thereby the wiping conveyor belt wipes a surface of the card or certificate, wherein the second direction is substantially perpendicular to the first direction.

Abstract: A vehicle detection system includes a transverse detector arm, two vertical detector arms, a radiation source, a plurality of transverse detectors, and a plurality of vertical detectors. The transverse detector arm may be disposed on the ground. Two vertical detector arms are disposed at both ends of the transverse detector arm. The radiation source is located above the transverse detector arm. A plurality of transverse detectors are disposed within the transverse detector arm and are laid along a length direction of the transverse detector arm for receiving ray emitted by the radiation source. The plurality of vertical detectors are symmetrically disposed on the two vertical detector arms, and each of the vertical detectors is disposed towards a center point of the radiation source for receiving ray emitted by the radiation source.

Abstract: An inspection apparatus and a method for segmenting an Image of a vehicle are disclosed. An X-ray transmission scanning is performed on the vehicle to obtain a transmission image. Each pixel of the transmission image is labeled with a category tag, by using a trained convolutional network. Images of respective parts of the vehicle are determined according to the category tag for each pixel. With the above solutions, it is possible to segment the images of respective parts of a vehicle more accurately in the situations that are complicated or have large variety kinds of vehicles.

Abstract: Disclosed are a power battery pack safety prevention and control system for an electric vehicle and a control method. The power battery pack safety prevention and control system includes a signal collection device, a master controller, and a stepwise prevention and control actuator. The master controller includes a fault diagnosis device, a cell thermal runway determination device, and a battery pack thermal runway spread determination device which are respectively electrically connected to the stepwise prevention and control actuator and send different control instructions to the stepwise prevention and control actuator. The stepwise prevention and control actuator can perform different levels of prevention and control actions according to different control instructions sent by the fault diagnosis device, the cell thermal runway determination device, and the battery pack thermal runway spread determination device.

Abstract: The disclosure provides a soil-groundwater joint remediation device and a method. The soil-groundwater joint remediation device is disposed in an area to be remediated and includes an injection structure, an extraction structure, and a control structure. The injection structure is disposed in an injection well defined in the area to be remediated. The injection structure includes a hot air injection member, an oxidant injection member, and a micro-bubble injection member. The extraction structure is disposed in an injection well defined in the area to be remediated and spaced from the injection structure. The extraction structure includes a liquid phase extraction member and a gas phase extraction member. The control structure controls the liquid phase extraction member and the gas phase extraction member to perform an extraction operation.

Abstract: A method for making lithium ion battery anode includes: scrapping a carbon nanotube array to obtain a carbon nanotube source, and adding the carbon nanotube source into water to form a carbon nanotube dispersion; providing a transition metal nitrate, adding the transition metal nitrate to the carbon nanotube dispersion to form a mixture of a carbon nanotube floccule and a transition metal nitrate solution; freeze-drying the mixture of the carbon nanotube floccule and the transition metal nitrate solution under vacuum condition to form a lithium ion batter anode preform; and, heat-treating the lithium ion battery anode preform to form the lithium ion battery anode.

Abstract: A device for making a carbon nanotube array includes a chamber, a gas diffusing unit, and a gas transporting pipe. The chamber defines a first inlet and a second inlet spaced apart from each other. The gas diffusing unit is in the chamber, and the gas diffusing unit is a hollow structure and defines a space, a first through hole, and an outlet. The gas transporting pipe has a first end and a second end opposite to the first end. The first end extends out of the chamber from the second inlet, and the second end is in the chamber and connected to the first through hole. The present application also relates to a method for making the carbon nanotube array.

Abstract: A lithium-sulfur battery includes a cathode, an anode, a lithium-sulfur battery separator and an electrolyte. The lithium-sulfur battery separator includes a pristine seperator (PSL) and a functional layer (FL). The FL is located on a surface of the PSL. The FL includes a plurality of graphene sheets and a plurality of MoP2 nanoparticles uniformly mixed with each other.

Abstract: A method for identifying a defect opening profile includes: acquiring a vertical component of a magnetic flux leakage signal of a defect; identifying right-angle features and corresponding right-angle position points of the defect from the vertical component; obtaining all possible right-angle types at each right-angle position point of the defect according to the corresponding right-angle feature of the vertical component; traversing all the possible right-angle types at each right-angle position point to determine respective optimal right-angle type at each right-angle position point; and drawing the defect opening profile according to the respective optimal right-angle type at each right-angle position point.

Abstract: A method for making a metal oxide semiconductor carbon nanotube thin film transistor circuit. A p-type carbon nanotube thin film transistor and a n-type carbon nanotube thin film transistor are formed on an insulating substrate and stacked with each other. The p-type carbon nanotube thin film transistor includes a first semiconductor carbon nanotube layer, a first drain electrode, a first source electrode, a functional dielectric layer, and a first gate electrode. The n-type carbon nanotube thin film transistor includes a second semiconductor carbon nanotube layer, a second drain electrode, a second source electrode, a first insulating layer, and a second gate electrode. The first drain electrode and the second drain electrode are electrically connected with each other. The first gate electrode and the second gate electrode are electrically connected with each other.

Abstract: A data concentration system for an inner detector of an oil-gas pipeline, and a timing control method, the system includes: a multi-channel data receiving module, a data concentration module and a data transmission module. The multi-channel data receiving module is electrically connected to a plurality of probes of an inner detector and is configured to receive detection data acquired by the plurality of probes. The data concentration module is electrically connected to the multi-channel data receiving module, and is configured to receive the detection data outputted by the multi-channel data receiving module and compress the detection data. The data transmission module is electrically connected to a data storage module of the inner detector and the data concentration module respectively, and the data transmission module is configured to receive compressed detection data.

Abstract: The present invention relates to a blackbody radiation source. The blackbody radiation source comprises a blackbody radiation cavity and a plurality of carbon nanotubes. The blackbody radiation cavity comprises an inner surface. A carbon nanotube array located on the inner surface of the blackbody radiation cavity. The carbon nanotube array comprises a plurality of carbon nanotubes, and an extending direction of each carbon nanotube is substantially perpendicular to the inner surface. The carbon nanotube array comprises a first surface and a second surface. The first surface is in contact with the inner surface and the second surface is far away from the inner surface. The plurality of carbon nanotubes extend from the first surface to the second surface. A plurality of microstructures are formed on the second surface of the carbon nanotube array.

Abstract: A movable ray inspection system used to be mounted in a container yard to inspect an object within a container is provided. The movable ray inspection system includes: a ray generator device configured to emit a ray, a ray receiving device configured to receive the ray, and at least one chamber for receiving the ray generator device and the ray receiving device therein. Each of the at least one chamber is configured to be a standard container or a chamber which has a same shape, a same size and a same structure as a standard container such that the movable ray inspection system is adapted to be stacked in the container yard.

Abstract: The present disclosure provides a method and a device for solving an optimal power flow in a power supply system. A second convex model of the optimal power flow is established. A relaxation variant sum e according to the second convex model is determined. It is judged whether the relaxation variant sum e is greater than a preset threshold. If the relaxation variant sum e is greater than the preset threshold, the second convex model of the optimal power flow is established. If the relaxation variant sum e is not greater than the preset threshold, the solution of the second convex optimal model is determined as a feasible solution of the optimal model of the optimal power flow.