Abstract: The present invention relates to a hyaluronic acid-based hydrogel precursor solution, a hyaluronic acid-based hydrogel, a preparation method and a repair material thereof. The hyaluronic acid-based hydrogel precursor solution includes a component A and a component B; the component A is prepared by the following steps: step S1, mixing methacrylate group-modified hyaluronic acid with furfuryl amine for reaction, to obtain furan-methacrylate modified hyaluronic acid; step S2, mixing the furan-methacrylate modified hyaluronic acid with maleimide for reaction, to obtain hyaluronic acid modified with dual groups; and step S3, mixing the hyaluronic acid modified with dual groups with a photoinitiator and a solvent, to obtain the component A; and the component B is a mercapto polyethylene glycol solution.

Abstract: An information sending method and an apparatus are provided. In the method, after sending a first message including uplink data to a network device, a terminal device receives first DCI from the network device, where the first DCI may include first indication information, and the first indication information is used to indicate that the network device has successfully demodulated the first message or used to indicate the terminal device to flush a HARQ buffer corresponding to the first message; and the terminal device may obtain the first indication information from the first DCI, and after obtaining the first indication information, the terminal device determines not to monitor a PDCCH search space within first duration after the first DCI. After sending the uplink data and receiving the first indication information from the network device, the terminal device may not monitor the PDCCH search space within specific duration.

Abstract: A fracturing device includes a power unit, and the power unit includes a muffling compartment, a turbine engine, and an air intake unit. The air intake unit is communicated with the turbine engine through an intake pipe and configured to provide a combustion-supporting gas to the turbine engine; the air intake unit is at a top of the muffling compartment and the muffling compartment has an accommodation space, the turbine engine is within the accommodation space. A fan is further provided to generate wither positive pressure or negative presser in the muffling compartment to facilitate a cooling of the turbine engine.

Abstract: A turbine engine cleaning system is disclosed. In the turbine engine cleaning system, a temperature sensor obtains a temperature within a combustion chamber of the turbine engine; a cleaning agent storage device stores cleaning agent; a cleaning agent delivery device is connected between the cleaning agent storage device and the combustion chamber of the turbine engine, and includes a pipe and a driver mechanism; the pipe includes a front-end pipe and a rear-end pipe; the front-end pipe is connected to the cleaning agent storage device; the rear-end pipe is connected to the front-end pipe and the combustion chamber; the driver mechanism is connected to the front-end pipe and drives the cleaning agent to enter the combustion chamber from the cleaning agent storage device by the front-end pipe and the rear-end pipe to clean components when the temperature within the combustion chamber is less than or equal to a predetermined temperature.

Abstract: The present invention provides a method and system for detecting changes in areas, comprising: acquiring images at different times of an area by low-altitude UAVs; extracting state features for each of backbone feature pairs; analyzing importance of each of state parts due to the state parts have different importance degrees to the whole image features under different scenes; eliminating the state features from complete features by virtue of differences in importance degrees, to obtain corresponding essential parts; determining at least one change in the area by analyzing the essential parts. The invention comprehensively considers the importance of the state parts in the input images, and the essential parts contains complete and pure information are obtained, which reflects an actual changed region.

Abstract: In one embodiment, a method includes receiving a user request from a first user to create a reminder at a client system, wherein the user request does not specify an activation-condition for the reminder, determining proactive activation-conditions for the reminder, determining whether the proactive activation-conditions for the reminder are satisfied based on user context associated with the first user, and presenting the reminder to the first user at the client system responsive to determining the proactive activation-conditions are satisfied.

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 communication method and an apparatus are provided, to implement inter-cell interference randomization. The method includes: generating a demodulation reference signal based on a first parameter, where the first parameter includes a radio frame number of a radio frame for sending the demodulation reference signal; and sending the demodulation reference signal and a first channel, where the first channel is for carrying uplink control information, and the demodulation reference signal is a reference signal for demodulating the first channel.

Abstract: An exhaust device and an installation method thereof, a turbine fracturing apparatus, and a disassembly method of a turbine are provided. The exhaust device includes a body, a fixation plate, a pressure plate, and a diffusion pipe; the body includes a side wall; the fixation plate is configured to be fixed to the side wall; the pressure plate is configured to be able to be pre-fixedly connected and fixedly connected with the fixation plate; the diffusion pipe is configured to be fixed to the side wall through the pressure plate and the fixation plate; the fixation plate further comprises a first pre-installation part, and the pressure plate further comprises a second pre-installation part, and the second pre-installation part is matched with the first pre-installation part to realize pre-fixation of the diffusion pipe.

Abstract: The present invention discloses a mobile energy storage internet system. The mobile energy storage internet system comprises distributed energy harvesting devices, mobile cold storage/heat storage devices, an energy system dispatching and monitoring center, and cold supply/heat supply terminals. The distributed energy harvesting devices are used for harvesting industrial waste cold energy/heat energy. The energy system dispatching and monitoring center is used for monitoring the residual energy of the distributed energy harvesting devices and the energy demand of the cold supply/heat supply terminals respectively, and mobilizing the mobile cold storage/heat storage devices to the distributed energy harvesting devices to store residual energy or to the cold supply/heat supply terminals to release the stored residual energy.

Abstract: An oil-gas treatment system, an oil-gas treatment method and a mechanical apparatus are disclosed. The oil-gas treatment system includes an oil-gas separation device and a first oil-gas delivery device. The oil-gas separation device is configured to perform an oil-gas separation treatment on oil-gas generated by an oil-gas generation device, the oil-gas separation device includes a lubrication oil box for containing lubrication oil; the first oil-gas delivery device is communicated with the lubrication oil box and is configured to convey at least a part of the oil-gas into the lubrication oil box; the lubrication oil box is configured to separate the oil-gas conveyed into the lubrication oil box, and a separated oil product is left in the lubrication oil box.

Abstract: A data sending method, a data receiving method, a device, and a system, the receiving method including receiving indication information from a network device, where the indication information indicates a first resource used to transmit uplink data, and where the first resource overlaps with a first early data transmission (EDT) physical random access channel resource, and delaying, in response to determining that a preset condition is satisfied, transmission of the uplink data, where the delaying transmission of the uplink data comprises sending the uplink data to the network device on a second resource, and where the second resource is non-overlapping with the first EDT physical random access channel resource.

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 light source of a photographing environment in which the electronic device is located is a flicker light source. The method includes: running a camera application in the electronic device; displaying a first image, where first exposure time is less than first duration, and the first image includes banding and/or a color cast image area; detecting a first operation; obtaining a second image in response to the first operation, where second exposure time is an integer multiple of the first duration; obtaining a color transformation matrix and/or a brightness parameter based on the first image and the second image; performing first image processing on the first image based on the color transformation matrix and/or the brightness parameter, to obtain a third image, where the third image is an image obtained by removing the banding and/or the color cast image area; and displaying or saving the third image.

Abstract: A fracturing apparatus may include a first plunger pump including a first power end and a first hydraulic end; a prime mover including a first power output shaft; and a first clutch including a first connection portion and a second connection portion. The first power end of the first plunger pump includes a first power input shaft, the first connection portion is coupled to the first power input shaft, the second connection portion is coupled to the first power output shaft of the prime mover.

Abstract: A gas turbine overspeed protection method includes: a power utilization load of a generator is acquired, and a rotating speed value of a gas turbine is acquired; whether the power utilization load suddenly decreases or disappears is judged, and if so, an eddy current retarder is controlled by a controller to simulate the power utilization load to provide a braking torque for the generator; or, whether the rotating speed value exceeds a set speed range is judged, and if so, the gas turbine is controlled by the controller to reduce fuel supply, and a discharge valve of a gas compressor is opened to discharge a high-pressure gas to reduce the power output and the rotating speed of the gas turbine.

Abstract: The present application provides bicyclic compounds that modulate the activity of diacylglycerol kinase (DGK), which are useful in the treatment of various diseases, including cancer.

Abstract: Disclosed is a portable three-dimensional DR system. The portable three-dimensional DR system includes a support mechanism, an X-ray generator, a stand and a flat panel detector. The support mechanism includes a support tube, a transmission component, a drive component and a support pole slidingly provided in the support tube. The X-ray generator is detachably provided on the support pole, the transmission component is used for driving the X-ray generator to move in the direction of closing to or far from the support tube, the drive component is used for driving the X-ray generator to rotate, the flat panel detector is provided on the stand, and the stand is placed on a horizontal plane.