Abstract: An off-road vehicle includes a frame and an engine. The engine includes a cylinder block and a cylinder head, on which an exhaust passage is arranged. The cylinder head is provided with a supplementary air supply passage for mixing air into the exhaust gas discharged from the combustion chamber. Alternatively, the supplementary air supply passage can be included in the exhaust system, such as in a cylinder head mounting flange of the exhaust pipe, upstream of an oxygen sensor and first and second stage catalytic converters. The exhaust gas from the engine is further oxidized by air, which reduces the content of components such as CO and NOx in the exhaust gas, improving environmental protection.

Abstract: Disclosed in the present disclosure is a method for smelting a high-temperature alloy with an ultrahigh N content in a VIM furnace, and a high-temperature alloy with an ultrahigh N content. The VIM-furnace smelting method comprises a smelting step performed in a VIM furnace, and a casting step, wherein at a later stage of smelting, a nitrogen-containing substance is added to the VIM furnace to adjust the content of N. In the present disclosure, by comprehensively improving the raw materials, the smelting process, etc., the yield of N during a VIM-furnace smelting process is increased and accurate control over the content of N in the high-temperature alloy is achieved, such that a target content of nitrogen can be guaranteed, and an ideal product can thus be obtained.

Abstract: The present invention belongs to the technical field of pharmaceutical chemistry, and particularly relates to a 1-aminobenzo[4,5]imidazo[1,2-a]pyrazine-3-formamide compound, and the preparation therefor and use thereof. The structure of the compound of the present invention is as shown in formula (I). The compound has a novel structure and is an adenosine receptor inhibitor, has good inhibitory activity on adenosine A2A receptors, has good subtype selectivity, and can be used as a targeted adenosine A2A receptor inhibitor for immunotherapy. By means of inhibiting the activity of the adenosine A2A receptor, the function of removing tumor cells by the immune system is released, so that the effect of treating tumors is achieved.

Abstract: A roller embossing method for flexible graphite polar plates of fuel cells comprises: (1) adjusting a clearance of an embossing roller pair of a roller press to a target thickness value of a monopolar plate; (2) feeding a flexible graphite slab in front of the embossing roller pair, and entangling the flexible graphite slab by means of opposite rotation of the embossing roller pair; (3) after the slab is entangled, continuing to forward roll the slab for 10-100 mm, and then reversely rolling the slab for 5-90 mm by means of synchronous and opposite rotation of an upper and a lower embossing roller, wherein one time of forward rolling and one time of reverse rolling are referred to as reciprocal rolling; (4) forming a polar plate after several times of reciprocal rolling, and separating the polar plate from the embossing rollers; (5) performing subsequent treatment on the roll-formed flexible graphite polar plate.

Abstract: A dual active bridge converter includes a first full-bridge circuit and a high-frequency inductor. The first full-bridge circuit includes a first bridge arm including a first switching element and a second switching element connected in series. Methods of controlling a dual active bridge converter include detecting a voltage of the high-frequency inductor in response to the first switching element being turned off, setting a dead time according to a detection result of the detecting the voltage of the high-frequency inductor, and turning on the second switching element based on the dead time.

Abstract: Disclosed in the present disclosure is a method for smelting a high-temperature alloy with an ultrahigh N content in a VIM furnace, and a high-temperature alloy with an ultrahigh N content. The VIM-furnace smelting method comprises a smelting step performed in a VIM furnace, and a casting step, wherein at a later stage of smelting, a nitrogen-containing substance is added to the VIM furnace to adjust the content of N. In the present disclosure, by comprehensively improving the raw materials, the smelting process, etc., the yield of N during a VIM-furnace smelting process is increased and accurate control over the content of N in the high-temperature alloy is achieved, such that a target content of nitrogen can be guaranteed, and an ideal product can thus be obtained.

Abstract: An optical path structure, an optical path system, and a transfer method. The optical path structure includes a beam adjustment module configured to adjust a diameter of a laser beam and output a first beam; a beam shaping module configured to perform energy homogenization on the first beam to obtain a second beam; and a beam focusing module configured to focus the second beam and output a target light spot; the target light spot is used for irradiating a device substrate, so that a bonding material in the device substrate changes after being irradiated by the target light spot, and a target device is separated from a carrier substrate; where the bonding material is disposed between the target device and the carrier substrate.

Abstract: Provided is a monitoring device for the settlement of a transmission tower. The monitoring device includes a laser ranging sensor, an acceleration sensor, a central processing module, a battery, and a fixing plate. The laser ranging sensor is configured to measure the distance between the installation position of the monitoring device and the ground. The acceleration sensor is configured to measure the inclination angle of a tower leg. The central processing module is configured to process measurement data of the laser ranging sensor and the acceleration sensor. The battery is configured to supply power to the laser ranging sensor, the acceleration sensor, and the central processing module. The fixing plate is configured to fix the monitoring device to the tower leg of the transmission tower. A method for monitoring a settlement of a transmission tower is further provided.

Abstract: Disclosed is a privacy-preserving neural network prediction system in the technical field of information security. The system includes a client, a server and a third party device. Off-line, the client, the server and the third party complete model parameter sharing through negotiation. Online, the client sends/shares input data to the server. The client and the server use a secure calculating protocol to jointly execute neural network prediction with privacy preservation. The server returns an obtained prediction result to the client, and the client reconstructs the prediction result. Only one round of communication interaction is required, and the amount of communication overhead is reduced, so that the communication efficiency significantly improves. The calculations in the present system may be based on a ring, rather than a domain. The present system also (re)customizes the offline protocol, which improves the offline efficiency and requires only a lightweight secret sharing operation.

Abstract: The present disclosure provides a color filter substrate and a method for manufacturing the same, and a display device, and the color filter substrate includes a base substrate, a black matrix and a color filter layer located on the base substrate, a quantum dot layer located on a side of the color filter layer away from the base substrate, a barrier layer located on a side of the black matrix away from the base substrate, and a first inorganic layer, and the first inorganic layer at least includes: a first portion located between the color filter layer and the quantum dot layer; a second portion located on the base substrate and between the quantum dot layer and the barrier layer; and a third portion located on a side of the barrier layer away from the base substrate.

Abstract: Provided are a method for assaying a specific IgM antibody and a total antibody for the 2019 novel coronavirus (2019-nCOV), a method for determining whether subjects are infected with 2019-nCOV, and a virus antigen and a kit for carrying out the above-mentioned detection.

Abstract: The present disclosure provides a juvenile fish limb identification method based on a multi-scale cascaded perceptual convolutional neural network. The method includes the following steps: acquiring a video sequence of a juvenile fish, dividing a fish body into five non-overlapping parts, performing semantic annotation on the five non-overlapping parts, and taking the five non-overlapping parts as an input of the multi-scale cascaded perceptual convolutional neural network; and using a convolutional layer as a feature extractor, performing feature extraction on an input image containing the annotation of each limb, inputting extracted features into an Attention-region proposal network (RPN) structure, determining a category of each pixel, and generating a limb mask of each limb category using a multi-scale cascade method. According to the method, the limbs of the juvenile fish can be efficiently and accurately identified, and technical support is provided for posture quantification of the juvenile fish.

Abstract: A display panel includes a base; a plurality of display units disposed on a surface of the base, every two adjacent display units being provided with a gap therebetween; and a connection unit disposed in the gap and connected to the every two adjacent display units. The connection unit includes a first organic layer, a conductive layer and a second organic layer that are sequentially stacked. The first organic layer and the second organic layer are each configured to block stress causing the connection unit to deform.

Abstract: An off-road vehicle includes a frame and an engine. The engine includes a cylinder block and a cylinder head, on which an exhaust passage is arranged. The cylinder head is provided with a supplementary air supply passage for mixing air into the exhaust gas discharged from the combustion chamber. Alternatively, the supplementary air supply passage can be included in the exhaust system, such as in a cylinder head mounting flange of the exhaust pipe, upstream of an oxygen sensor and first and second stage catalytic converters. The exhaust gas from the engine is further oxidized by air, which reduces the content of components such as CO and NOx in the exhaust gas, improving environmental protection.

Abstract: A hydraulic control valve for an ATV or motorcycle takes hydraulic input from a hand brake lever as an input to a first cavity of the control valve with a movable piston therein, and from a foot brake lever as an input to a second cavity of the control valve with a movable piston therein, with the two pistons being linked. A bypass channel extends around the piston in the first cavity, which is closed off when the first piston moves longitudinally. The output of the first cavity hydraulically controls braking of the front wheel(s). The foot brake lever also pressurizes a direct line to brake the rear wheel(s) that doesn't go through the control valve.

Abstract: Disclosed is a method for depth image completion using a depth image completion model, the method including obtaining an original color image and an original depth image corresponding to the original color image, obtaining a first depth image using a first neural network (NN) based on the original color image, obtaining a second depth image using a second NN based on the original depth image, and generating a final depth image by fusing the first depth image and the second depth image.

Abstract: The present disclosure provides a bioretrosynthetic method and system based on an AND-OR tree and single-step reaction template prediction. The method decomposes generation of a retrosynthetic pathway of a target molecule into multiple steps of the single-step reaction template prediction when conducting retrosynthesis on the target molecule. During the single-step reaction template prediction, a substrate molecule of the reaction template predicted in a previous step is used as a product molecule of a current reaction template to be predicted. Molecular characteristics of the product molecule are subjected to custom calculation using a SMILES sequence of the product molecule as an input, to be compatible with various single-step reaction template prediction models. The reaction template is determined according to a prediction result of the model, and extended based on a structure of the AND-OR tree. As a result, a potential synthetic pathway is found for the target molecule.

Abstract: A processor-implemented method includes: generating a first output of each of two or more layers of a teacher network, based on a first image; generating pseudo labels respectively corresponding to the first outputs, based on the first outputs; generating a second output using one or more layers of a student network comprising an output layer, based on the first image; generating prediction results respectively corresponding to the two or more layers of the teacher network, based on the second output; and training the student network by updating the student network based on the pseudo labels and the prediction results.