Abstract: Disclosed is an automatic hole-processing method with self-adapting adjustment of processing parameters, including the following steps: performing tool feeding, detecting whether the rotate speed changes or not, if changes, judging the type of the processing material according to the new rotate speed after stabilization (if not, the tool feeding is continued); feeding the tool according to the processing parameters suitable for the material, detecting whether the rotate speed changes or not, if changes, judging whether the hole processing has been completed or not according to the new rotate speed after stabilization (if not, the tool feeding is continued), if completed, retracting the tool with the set parameters (if not, judging the type of the processing material according to the new rotate speed after stabilization, and repeating the above steps), completing the hole processing.

Abstract: A metal tin cyclized perylene diimide derivative, having a structure formula of: where R1 and R2 are each independently selected from a hydrogen atom or a group containing or not containing a substituent. The group containing or not containing a substituent is an alkyl having between 1 and 60 carbon atoms, an alkoxy having between 1 and 60 carbon atoms, a cycloalkyl having between 3 and 60 carbon atoms, an aryl having between 5 and 60 atoms, an alkylaryl having between 1 and 60 carbon atoms, an alkylheteroaryl having between 1 and 60 carbon atoms, an alkylheterocyclyl having between 1 and 60 carbon atoms, an alkyleneoxyalkyl having between 1 and 60 carbon atoms, an alkyleneoxyaryl having between 1 and 60 carbon atoms, an alkyleneoxyheteroaryl having between 1 and 60 carbon atoms, or an alkyleneoxyheterocyclyl having between 1 and 60 carbon atoms.

Abstract: A method for preparing a novel crystal form F of trelagliptin includes: adding a mediating protein into the trelagliptin to obtain a mixture, and introducing a mechanochemical action on the mixture for transformation of a crystal form of the trelagliptin to obtain the novel crystal form F of trelagliptin. The preparation method does not require any organic solvent and thus will not lead to an organic solvent residue to affect the safety of medication. In addition, the preparation method is less time-consuming than a solvent crystallization method, is easy to allow green industrial production, and has characteristics such as simplicity, high efficiency, safety, and environmental friendliness.

Abstract: The present invention relates to a method for manufacturing a stretchable electrochromic device and a stretchable electrochromic device manufactured thereby, and more specifically, the present invention is characterized in that a stretchable electrochromic device, which is manufactured by stretching color changeable polymer gel, and then coating one surface and/or the other surface thereof with a metal solution, has excellent water resistance and initial transmittance.

Abstract: An automatic identification and classification production line for mobile terminal liquid crystal display (LCD) screens includes a size and posture identification adjustment part, a model identification part, and a classification storage device. The size and posture identification adjustment part can transport a mobile terminal LCD screen, identify front and back surfaces of the mobile terminal LCD screen, size of the mobile terminal LCD screen, and orientation of the mobile terminal LCD screen, and adjust the front surface of the mobile terminal LCD screen to face up and the orientation of the mobile terminal LCD screen to be the same as the transportation direction during transportation. The model identification part transports the mobile terminal LCD screen after adjustment of the posture, and identifies model of the mobile terminal LCD screen according to the size during transportation. The classification storage device classifies and stores mobile terminal LCD screens according to different models.

Abstract: Disclosed is a multi-turn human-machine conversation method and apparatus based on a time-sequence feature screening encoding module, belonging to the technical field of natural language processing and artificial intelligence. The technical problem to be solved by the disclosure is how to screen information for each utterance in a historical conversation so as to obtain semantic information only relevant to candidate responses and how to reserve and extract time-sequence features in the historical conversation, thus improving prediction accuracy of a multi-turn human-machine conversation system.

Abstract: The present invention provides a system and a method for simulating formation and evolution of a deep-sea cold seep ecosystem. Simulation of the cold seep ecosystem is realized and a unit above seabed interface, a seabed interface ecosystem simulation unit, and a subsea interface unit is formed through the system, which provides environmental conditions for evolution of the cold seep ecosystem. At the same, the primary succession and secondary succession of the ecological cold seep system are simulated through the environmental condition control equipment, the sampling cabin, and the seabed current injection system, and the formation environment of the system is remodeled in situ, thereby effectively shortening the period of field observation to research the cold seep ecosystem.

Abstract: A low-frequency acoustic wave generating device for detecting pipeline blockage related to the technical field of pipeline detection is provided and includes a sealing shell configured to be communicated with a pipeline, a sealed pressure environment is formed inside the sealing shell. A low-frequency electroacoustic transducer is disposed inside the sealing shell, the low-frequency electroacoustic transducer is connected to a signal generator and is configured to transmit an acoustic wave into the pipeline. The device transmits the acoustic wave signals to a high-pressure gas pipeline, combined with a signal generator capable of generating any waveform, thereby emitting any waveform of acoustic wave signal into the pipeline. The use of acoustic waves with special markings and characteristics for pipeline blockage detection can improve the anti-noise interference ability of the acoustic wave detection, and improve the precision of the detection.

Abstract: The present disclosure discloses a complex network attack detection method based on cross-host abnormal behavior recognition, and the method includes the following steps: 1) firstly collecting kernel log data of a host to construct an intra-host association graph, then employing a graph convolution network (GCN) to extract features, and finally using an autoencoder to detect abnormal nodes in the intra-host association graph; 2) firstly constructing an inter-host interaction graph by using network flow log data, then training a prediction model based on a sequence of the inter-host interaction graph, and finally detecting abnormal edges in the inter-host interaction graph according to prediction differences; and 3) firstly constructing a cross-host exception association graph according to intra-host and inter-host exception detection results, then spreading exception scores by employing a PageRank algorithm, and finally confirming an attacked host based on the exception scores.

Abstract: Disclosed is an all-fiber optical vortex laser based on resonance of orbital angular momentum modes. The all-fiber optical vortex laser has an annular cavity structure, and includes a narrow-linewidth pump laser, an optical amplifier, an orbital angular momentum mode generator, a first polarization controller, an optical fiber circulator, an optical fiber coupler, a second polarization controller and a vortex optical fiber. The orbital angular momentum mode generator (3) realizes directional conversion from a fundamental transverse mode in a single-mode optical fiber into an orbital angular momentum mode with a specific topological charge in a vortex optical fiber. The optical fiber coupler can realize directional coupling from an orbital angular momentum mode in one vortex optical fiber to an orbital angular momentum mode in another vortex optical fiber; the vortex optical fiber is an optical fiber supporting stable transmission of an orbital angular momentum mode.

Abstract: The present invention relates to a haptic actuator based on a nutation structure using a squeeze mode of a magneto-rheological fluid, which compresses a magneto-rheological fluid (MR fluid) by using a rotary body capable of performing a rotary motion based on a nutation structure, thereby generating a sustainable rotational resistance force by using a squeeze mode and a flow mode of the MR fluid.

Abstract: A generating device based on friction drive for gear involute artifact with long-rolled path length by rolling method is proposes. The device includes a roller component, rail component and friction-driven component, wherein the roller component consists of a gear involute artifact with long rolled length, a mandrel, a multi-ball bearing for gear involute artifact, the base-circle plates, the parallel sleeves, a multi-ball bearing, the plain washers, the cross washers, and the locking nuts; the rail component consists of a foundation, a location baffle for base-circle plates, rails, the baffles, a location baffle for rail, copper washers, the connecting screws and the set screws of the rail; and the friction-driven component consists of a friction block, a motorized linear sliding table, a vertical sliding table, a vertical foundation and an adapter. It has good market application prospect and popularization value.

Abstract: A modular wheeled mobile ultrasonic structure detection apparatus is disclosed, including a mobile detection platform, at least one ultrasonic detection roller, at least one ultrasonic sensor, and a steering balance mechanism including a connecting arm and at least one balancing apparatus; the balancing apparatus includes a balancing cylinder hinged to the connecting arm, a balancing spring provided in the balancing cylinder, and a steering linkage hinged to the mobile detection platform, a piston being connected to one end of the steering linkage away from the mobile detection platform and the balancing spring being in contact with the piston; and the piston can move along a length direction of the balancing cylinder and thereby define a direction of the steering linkage. When the structure surface fluctuates, bends, or turns, the mobile detection platform can rotate relative to the connecting arm to change the moving posture to adapt to various complex detection conditions.

Abstract: A method for promoting the rapid precipitation of travertine crystals by algae is disclosed. Microalgae is added to a body of water having a calcium ion concentration of 100-500 mg/L and stirred. The amount of microalgae is 0.1-8×108 cells/L. The invention adopts a method for promoting the rapid precipitation of travertine crystals by algae, which significantly improves the sedimentation rate of travertine crystals. At the same time, there are pseudomonas in the calcified water body of algae, which can be used for algae-lysing bacteria isolation and purification.

Abstract: A method for reconstructing the crack profiles based on the composite-mode total focusing method (CTFM), including: selecting the parameters for phased array ultrasonic testing; acquiring the A-scan signal matrix; establishing the coordinate system and grid division of the region of interest (ROI); determining the wave modes; solving the positions of the refracted points; reconstructing the image by CTFM; and realizing the quantification, positioning, and orientation of cracks. The A-scan signal matrix including 21 views is acquired. Based on Fermat's principle, the refracted points at the interface between wedge and sample for the 21 views are calculated, to obtain the corresponding amplitude for each view in the ROI. For each reconstruction point, the strongest response is selected from the 21 views. The profiles of the cracks with different orientation angles are reconstructed by CTFM.

Abstract: The present invention discloses a welding method of a demetallized ceramic substrate having a surface capillary microgroove structure. The demetallized ceramic substrate includes a ceramic substrate main body and surface capillary microstructures. The surface capillary microstructures are arranged on two lateral sides of the ceramic substrate main body and the surface capillary microstructures specifically are capillary microgrooves. The welding method includes the following steps: fixing a chip to an upper surface of the demetallized ceramic substrate having the surface capillary microgroove structure, fixing the ceramic substrate with the chip to a printed circuit board having a bonding pad, and placing melted solder on the bonding pad, and driving the solder to ascend to an electrode of the chip from the bonding pad in a lower layer by means of a capillary force, thereby realizing an electrical connection between the chip and the printed circuit board.

Abstract: The present invention discloses a disparity estimation optimization method based on upsampling and exact rematching, which conducts exact rematching within a small range in an optimized network, improves previous upsampling methods such as neighbor interpolation and bilinear interpolation for disparity maps or cost maps, and works out a propagation-based upsampling method by the way of network so that accurate disparity values can be better restored from disparity maps in the upsampling process.

Abstract: A macro-to-micro two-stage camera lens focusing device based on a direct-drive air floatation platform includes: a two-stage motion device with macro-motion and micro-motion focusing systems. The focusing device includes: a z-direction macro-motion system, a z-direction micro-motion focusing system, and a y-direction micro-motion focusing system. The macro-motion system includes flat-plate linear motors, a tubular linear motor, a tubular elastic balancing device, and an aerostatic air flotation platform; and the micro-motion focusing system includes a micro-motion platform base, piezoceramic actuators, micro-motion flexure hinges, a micro-motion platform, and an industrial camera lens.

Abstract: Disclosed is a tracking and identification method for multiple vessel targets, devices, electronic device, and storage media. The method comprises: determining the current position of the vessel based on effective AIS data, and projecting it into an image to obtain the visual motion trajectory of the vessel; obtaining target detection boxes corresponding to multiple vessels based on video surveillance data; determining an occluded area based on the target detection boxes of multiple vessels at the previous time, determining the predicted detection box of the occluded area, and loading the appearance features of the predicted detection boxes as the appearance features extracted at the last time before occlusion; integrating effective AIS data from multiple vessels into video surveillance data to determine the vessel's identity. This disclosure can solve the problem of anti-occlusion tracking for vessels in complex vessel navigation scenarios such as severe occlusion and complete occlusion.

Abstract: A method for preparing an ecological foamed ceramic from lepidolite filter mud whole waste belongs to the field of environmental protection and resource reuse. The ecological foamed ceramic with excellent properties can be prepared by using lepidolite filter mud as the main raw materials, including ball milling, homogenization, drying, material distribution, and heat treatment. The amount of lepidolite filter mud in the present invention accounts for more than 90%, which is a whole waste utilization and can achieve high-value utilization of bulk lepidolite filter mud. The present invention uses a composite foaming agent combined with a foaming technology and has the advantages of rapid foaming and controllable pore size compared with a single foaming agent. The ecological foamed ceramic prepared by the present invention meets the industrial standard of CJ/T 299-2008 “Artificial ceramic filter material for water treatment” and has potential application value in domestic sewage treatment.