Abstract: The present invention discloses a supercritical CO2 thickener for shale gas reservoir based on hollow mesoporous silica nanoparticles and a preparation method thereof, and relates to the technical field of oil and gas field development. The preparation method of the thickener includes: reacting a monomer consisting of fluoroacrylate, styrene and vinyl acetate in a molar ratio of 3-5:1-2:1-2 with 2%-5% of a total weight of hollow mesoporous silica nanoparticles with carbon-carbon double bonds under the action of an initiator to obtain the thickener. The preparation method of the present invention does not involve the addition of organic solvents during the reaction process and thus does not cause harm to the human body. The thickener of the present invention has good CO2 viscosity-increasing effect and good sand carrying performance, and can effectively improve the fracturing effect.

Abstract: The present disclosure provides a camera system and an event-assisted image processing method. The camera system includes an image sensor, an event-based sensor, and a processing unit. The image sensor is configured to capture visual images of a targeted scene to obtain image sensing frames with a first frequency. The event-based sensor is configured to capture event data of the targeted scene to obtain event frames with a second frequency higher than the first frequency. The processing unit is configured to: receiving the image sensing frames within a predetermined time period; accumulating the event frames within the predetermined time period; generating a temporal-spatial mask indicating interested areas for the event frames; determining geometric features in the temporal-spatial masks; synchronizing the image sensing frames and the event frames at timestamps within the predetermined time period; and fusing the temporal-spatial mask with the image sensing frames to obtain a masked visual image.

Abstract: An intelligent robot for long-distance detection in a drainage deep tunnel includes a tunnel pipe, a cleaning unit and a pushing unit. The cleaning unit includes a conduction assembly for conducting a blocked part of the tunnel pipe, a cleaning assembly located on one side of the conduction assembly and used for cleaning the conducted tunnel pipe, and a drive assembly arranged on one side of the cleaning assembly and used for synchronously driving the cleaning assembly and the conduction assembly to rotate; and the pushing unit is arranged on one side of the cleaning unit, and used for pushing the cleaning unit to move forwards along an interior of the tunnel pipe. When a traction rod moves from the middle to the corner of a ring slot, a regulating spring pushes an extending and retracting shaft to move outwards along second guide cylinders.

Abstract: Hybrid image sensors with on-chip image deblur (and associated systems, devices, and methods) are disclosed herein. In one embodiment, an image sensor includes (a) a plurality of CMOS image sensor (CIS) pixels configured to capture CIS data corresponding intensity of light incident on CIS pixels of the plurality of CIS pixels, (b) an event vision sensor (EVS) pixel configured to capture EVS data corresponding to events detected in light incident on the EVS pixel, and (c) a deblur circuit configured to generate deblurred image data based on the CIS data and an accumulation of events in the EVS data. The deblur circuit can be configured to compute the accumulation of events, such as using an event-based double integral model.

Abstract: Provided are a device (4) and a method for online measuring a spectrum for a laser device. The device (4) for online measuring a spectrum for a laser device includes: a first optical path assembly (G1) and a second optical path assembly (G2), and the second optical path assembly (G2) and the first optical path assembly (G1) constitute a measurement optical path. The second optical path assembly (G2) includes: an FP etalon (15) and a grating (18). The homogenized laser beam passes through the FP etalon (15) to generate an interference fringe. The grating (18) is arranged after the FP etalon (15), or is arranged before the FP etalon (15) in the measurement optical path, and is configured to disperse the laser beam passing through the FP etalon (15).

Abstract: A process for producing propylene involves dehydration of isopropanol. The dehydration process includes a step of subjecting a starting material containing isopropanol to a dehydration reaction in the presence of a dehydration catalyst comprising alumina to produce a product containing propylene. The starting material has a water content of 0.1 to 10.0 wt % (relative to 100 wt % of the total mass of the starting material), and the product has a total content of C2 unsaturated impurities and C3-C4 unsaturated impurities of 80 ppm or less (relative to 100 wt % of the total mass of the product).

Abstract: A control method for stabilizing excimer laser pulse energy includes: obtaining a measured energy value of the n-th pulse in a pulse sequence; calculating the difference between the measured energy value and the preset energy value; taking the z-th pulse of the sequence as a demarcation point, when n is a positive integer less than z, the discharge voltage value of the next pulse is calculated according to a first mathematical model, and when n is an integer greater than z?1, the discharge voltage value of the next pulse is calculated according to a second mathematical model; and the next pulse is generated according to the discharge voltage value. A control system based on the control method includes: a high-voltage discharge module, a laser cavity, a laser parameter measurement module, and an energy stability controller.

Abstract: A portable solar photovoltaic array power generator set container and a usage method thereof are provided. The portable solar photovoltaic array power generator set container includes a foldable solar photovoltaic power generation unit, a rail component for the foldable solar photovoltaic power generation unit to unfold and retract, electrical equipment and a container. The foldable solar photovoltaic power generation unit includes multiple frames, multiple solar photovoltaic components, a hinge component and a movable component. The foldable solar photovoltaic power generation unit further includes a position-limiting component for limiting an unfolding angle of each set of frames.

Abstract: This application discloses an electronic device. The electronic device includes: a SAR sensor, where the SAR sensor includes a first detection channel and a second detection channel; and a first antenna electrode and a second antenna electrode, where the first antenna electrode is connected to the SAR sensor through the first detection channel, the second antenna electrode is connected to the SAR sensor through the second detection channel, and the SAR sensor determines a distance between the electronic device and a human body by using a signal of the first antenna electrode and/or a signal of the second antenna electrode; where an adjustment path is disposed between the first antenna electrode and the second antenna electrode, and the adjustment path is configured to adjust a connection status between the first antenna electrode and the second antenna electrode.

Abstract: This disclosure provides a battery pack and a control method thereof, and an energy storage device. The battery pack may include a battery housing, an electrochemical cell, a power module, a controller, a first temperature sensor, and a second temperature sensor. The electrochemical cell is located inside the battery housing, and a heating film is disposed on an outer wall of the electrochemical cell. The power module is located outside the battery housing and is electrically connected to the electrochemical cell. The first temperature sensor is configured to detect temperature of the power module to obtain a first temperature value. The second temperature sensor is configured to detect temperature of the electrochemical cell to obtain a second temperature value. The heating film, the first temperature sensor, and the second temperature sensor are electrically connected to the controller.

Abstract: Systems and methods are provided for identifying targeted datasets that are configured to facilitate an improvement in the accuracy of an acoustic model included in the automatic speech recognition system. Systems obtain a obtain a test dataset comprising (i) audio data having natural speech utterances and (ii) a transcription of the natural speech utterances. Systems generate a text-to-speech dataset comprising audio data having synthesized speech utterances based on the transcription of the natural speech utterances. Systems apply the test dataset and the text-to-speech dataset to the acoustic model to obtain a first acoustic model output and a second acoustic model output, respectively. Systems identify a first set of errors in the first acoustic model output and a second set of errors in the second acoustic model output. Finally, based on comparing the first set of errors and the second set of errors, an acoustic model error ratio is generated.

Abstract: An antenna module of the electronic device includes a first radiator and a second radiator. The first radiator and the second radiator respectively correspond to different communication frequency bands, and the first radiator includes: a first sub-radiator, a second sub-radiator, a first connection portion, and a second connection portion. A common feeding structure is disposed between the first sub-radiator and the second radiator, and the first sub-radiator is connected to the second sub-radiator through the first connection portion and the second connection portion. The common feeding structure and the first sub-radiator are disposed on a non-metallic area of an inner side surface of a housing of the electronic device, the second sub-radiator is disposed on a non-metallic area of an outer surface of the housing, and the second radiator is disposed on a non-metallic area of the inner side surface or a non-metallic area of the outer surface.

Abstract: The present disclosure provides a dynamic gesture identification method, a gesture interaction method and an interaction system. The interaction system includes: a dynamic vision sensor configured to trigger an event in accordance with movement of an object in a field of view relative to the dynamic vision sensor, and output an event data flow; a hand detection module configured to process the received event data flow to determine an initial position of a hand; a hand tracking module configured to determine a series of state vectors in accordance with the initial position of the hand; a gesture identification module configured to create an event cloud in accordance with event data corresponding to the obtained state vector, and process the event cloud to identify the gesture; and a command execution module configured to execute a corresponding operating command in accordance with the identified gesture.

Abstract: An on-chip debugging device and method is provided. The on-chip debugging device includes: an external interface module configured for outputting chip debugging state information to an external debugger and receiving a control instruction of the external debugger; a debugging mode control module configured for setting a to-be-sampled type of a specified chip internal signal and setting a debugging trigger condition according to the debugging configuration of the external debugger or the internal CPU; a debugging monitor module configured for sampling and recording the internal signal of the chip of the specified type so as to identify the running state of the chip; and a debugging information processing module configured for storing the running state of the chip in an internal debugging memory and sending it to the external debugger by the external interface module or sending it to the internal CPU via an internal bus.

Abstract: A dustproof structure for a laser output window of a laser includes a discharge chamber, a gas purifier, a dust prevention pipeline, and a fan. A cavity is provided between the laser output window and a slit. The dust prevention pipeline includes a gas inlet end connected to the gas purifier, a middle part passing through the cavity, and a gas outlet end connected to the fan. At least a portion of a working gas purified by the gas purifier flows through the dust prevention pipeline to the cavity. The fan guides the working gas so as to increase a flow rate of the gas passing through the cavity, thereby strengthening the blowing of the clean gas on the laser output window and effectively preventing dust particles in the working gas from approaching and contaminating the laser output window.

Abstract: According to the present disclosure, there is provided a device (2) and a method for measuring a wavelength for a laser device. The device (2) for measuring a wavelength for a laser device includes: a first optical path assembly and a second optical path assembly. The first optical path assembly and the second optical path assembly constitute a laser wavelength measurement optical path. The second optical path assembly includes: an FP etalon assembly (11) and an optical classifier (13). The homogenized laser beam passes through the FP etalon assembly (11) to generate an interference fringe. The optical classifier (13) is arranged after the FP etalon assembly (11) in the laser wavelength measurement optical path, and configured to deflect the laser beam passing through the FP etalon assembly (11).

Abstract: This application provides an antenna structure and a communications terminal. The antenna structure includes an antenna radiator, a signal source, a first capacitor, and a first tuning circuit. A first terminal of the antenna radiator is grounded. A first terminal of the first capacitor and a first terminal of the first tuning circuit are electrically connected to a connection point of the antenna radiator. A second terminal of the first capacitor is electrically connected to the signal source. A second terminal of the first tuning circuit is grounded. Antenna impedance of the first terminal of the first capacitor at target frequencies is in the first quadrant of a Smith chart, and the target frequencies are at least some frequencies in frequency bands covered by the antenna radiator.

Abstract: An information handling system may include at least one processor and a memory. The information handling system may be configured to: receive a request to perform a management operation on a target information handling system, wherein the request is received from a mobile device via a mobile network, and wherein the request includes data retrieved from a visual identifier associated with the target information handling system; and perform the management operation by communicating with the target information handling system via a management network other than the mobile network.

Abstract: There is set forth herein a light energy exciter that can include one or more light sources. A light energy exciter can emit excitation light directed toward a detector surface that can support biological or chemical samples.