7results about How to "Simple requirements" patented technology

The invention relates to a silicon-based negative electrode material based on metal oxide coating and preparation and application thereof, and a preparation method of the material comprises the following steps: S1, putting a silicon-based material into a solvent for ultrasonic dispersion to obtain a uniform suspension; s2, adding a metal oxide precursor into the suspension obtained in S1, and carrying out hydrolysis or condensation reaction to generate a continuous metal oxide coating layer on the surface of the silicon-based material in situ; and S3, after the reaction is finished, centrifugally separating, washing and drying the obtained product to obtain the silicon-based negative electrode material, namely a target product. Compared with the prior art, the method provided by the invention is simple in process, low in cost and good in repeatability, and the obtained coated silicon material has excellent structural stability and electrochemical performance and has a wide application prospect in high-energy-density lithium ion batteries and all-solid-state batteries.

The application provides a content extraction method based on cell membrane capacitance change, and belongs to the field of cell-level micromanipulation technology, and comprises the following steps: S1, a change relationship between cell membrane capacitance and cell membrane surface area is established; S2, a change relationship between cell membrane surface area and volume is approximately established; S3, high-resistance sealing and membrane rupture of cells are completed, constant voltage cell content extraction operation is performed, and cell membrane capacitance values in the extraction process are obtained in real time through capacitance fitting; S4, content extraction amount is estimated; S5, actual cytoplasm extraction amount is calculated based on a rotary L-shaped electrode, the relationship model established in S2 is corrected, and finally, quantitative extraction of cell contents is realized. The application utilizes an electrical model of cell membrane capacitance, realizes real-time feedback of cell content extraction amount, realizes quantitative control of content extraction, can realize a cytoplasm extraction success rate of 62.5% in the case of a whole cell patch clamp structure, and the average cytoplasm extraction amount control error is less than 6% of the total cell volume.

The application discloses a kind of high-strength plastic β titanium alloy strip and whole-process preparation method, the β titanium alloy strip is composed of the following mass percentage components: Cr 7.7%~8.3%, Mo 4.9%~5.5%, V 4.9%~5.5%, Al 2.7%~3.3%, Fe≤0.20%, C≤0.03%, N≤0.02%, H≤0.010%, O≤0.10%, and the rest is Ti;The preparation method comprises: one, forging;Two, hot rolling;Three, cold rolling;Four, heat treatment.The β titanium alloy strip and whole-process preparation method of the application are overall planning from component design to final heat treatment whole-process procedure, improve production efficiency, shorten preparation time, and the β titanium alloy strip solid solution state microstructure is equiaxed β fine grain structure, strength-plasticity matching is high, horizontal longitudinal organization performance is uniform, with excellent comprehensive mechanical properties, applicable to metal processing field.

The application discloses a kind of preparation methods of toughening traffic 6016 aluminum alloy, belong to metal material preparation technical field;Including the following steps: alloy uses the aluminum ingot with purity more than 99.9%, intermediate alloy Al-20Si, Al-10Mg, Al-50Cu, Al-10Mn, Al-20Cr, Al-20Zn, Al-20Er, Al-5Ti-B, according to the proportioning of element mass ratio Si:Mg:Cu:Mn:Fe:Cr:Zn:Ti:Er=(1.0~1.5):(0.25~0.6):(<0.20):(<0.50):(<0.10):(<0.20):(<0.15):(0.15,0.30,0.45) smelting, the cast ingot that smelts is homogenized annealing, rolling is obtained The plate material with the thickness of 1mm, then after heat treatment obtains the aluminum alloy plate of T4P state.The application adds rare earth element Er, heat treatment toughening traffic 6016 aluminum alloy, so that aluminum alloy has preferable plasticity under the premise of maintaining high hardness and high strength, is expected to improve the strength and plasticity of 6016 aluminum alloy in practical application, conducive to the wide application of 6016 aluminum alloy.

The utility model discloses a non-visual automatic protection frame device, and belongs to the technical field of protection technologies in the debugging and running process of a robot. The robot comprises a frame, the frame comprises an upper layer and a lower layer, the upper layer is provided with a driver, a controller and a power source, the lower layer is used as a robot activity space, and a movement mechanism is arranged at the bottom of the frame; the top of the protection mechanism is connected with the top of the frame, and the bottom of the protection mechanism penetrates through the upper layer of the frame to be connected with a robot; the controller, the driver, the protection mechanism and the movement mechanism are in communication connection; according to the utility model, the tension sensor and the horizontal sensor are ingeniously combined, so that the spatial position of the robot relative to the protective frame can be accurately sensed. By means of the innovative design, the position of the protection frame can be automatically adjusted, it is guaranteed that the robot is located in a safety protection center area all the time, and the protection effect is greatly improved.

This invention belongs to the field of aviation propulsion system technology and discloses a method for operating a hybrid lift and thrust system for a low-altitude vertical takeoff and landing aircraft. The system includes a low-pressure compressor, a starter / generator, a high-pressure compressor, a gas turbine, an adjustable thrust nozzle, a PEM fuel cell, an electric motor, and a lift propeller. The low-pressure compressor, starter / generator, high-pressure compressor, and gas turbine are coaxial. The compressed air from the low-pressure compressor is divided into two paths. One path of compressed air enters the high-pressure compressor for further pressurization and then enters the main combustion chamber, which is connected to the gas turbine at the rear end. The other path of compressed air from the low-pressure compressor enters the cathode inlet of the PEM fuel cell and the adjustable thrust nozzle. The PEM fuel cell supplies power to the electrical busbar, and the reaction end of the PEM fuel cell is connected to a mixer. The exhaust port of the gas turbine is connected to the mixer, which mixes the exhaust gas from the gas turbine and the exhaust gas from the PEM fuel cell before supplying it to the adjustable thrust nozzle at the rear end to provide thrust. The starter / generator is connected to the electrical busbar, which is connected to the electric motor, and the motor shaft drives the lift propeller. This invention can be used in manned and unmanned aircraft that employ rotor takeoff and landing and thrust cruise, reducing the number of shafts used, simplifying the system structure, reducing the demand for H2, and increasing system operating time.

The invention discloses an offline payment on-site proving method and system and a storage medium, relates to the technical field of block chain payment, and can solve the payment security problems of modern payment, money laundering, disputes and the like caused by the fact that a payment behavior cannot be strongly bound with physical on-site in an existing scanning payment process. According to the scheme, the method comprises the following steps: a terminal generates a two-dimensional code containing a session identifier and a Bluetooth connection parameter; the user side scans the two-dimensional code to obtain the session identifier and the Bluetooth connection parameter, and establishes a Bluetooth communication link with the terminal based on the Bluetooth connection parameter; the terminal and the user side carry out bidirectional challenge-response verification based on the Bluetooth communication link, and after the verification is passed, the user side generates a shared session key based on the session identifier, the exchanged challenge value and the feature information of the Bluetooth communication link; and after the user side uses the session key to carry out cryptographic calculation on the binding field of the session identifier, generating an on-site proof, and carrying out a transaction service after the on-site proof is verified to be valid.