Abstract: This application provides a signal decoding method, a decoding circuit, and a stylus. In one example, a to-be-measured signal is sampled to obtain a plurality of sampled signals. The to-be-measured signal is a modulation signal that carries an interference signal. The modulation signal is sent by a touch panel of a terminal device. At least two edge signals in the to-be-measured signal are determined based on the plurality of sampled signals. The to-be-measured signal is decoded based on the at least two edge signals to obtain the modulation signal.

Abstract: The present invention discloses a method, equipment, and readable storage medium for tracking and evaluating the life cycle EUR of horizontal wells, and relates to the field of oil and gas development technology. The present invention divides the life cycle stages of fractured horizontal wells in unconventional oil and gas reservoirs, provides corresponding EUR evaluation steps for different life cycle stages based on the production performance characteristics of fractured horizontal wells in unconventional oil and gas reservoirs in the drilling and fracturing stage, extraction and testing stage, rapid production decline stage, and low pressure and small volume production stage, and establishes the EUR tracking and evaluation process of fractured horizontal wells in unconventional oil and gas reservoirs throughout their life cycle from drilling to abandonment.

Abstract: The invention discloses a full wellbore pressure calculation method, device and computer-readable storage medium for fracturing horizontal wells, includes steps: collect basic parameters, establish fully implicit numerical model of formation flow; solve the full implicit numerical model under an inner boundary condition of a constant gas production rate; calculate wellbore pressure change of each fracturing section of horizontal well; calculate the bottom-hole pressure of each fracture initiation point; repeat steps until the variables converge, the bottom-hole flow pressure and the bottom-hole pressure at each fracture initiation point are obtained at this time step; the wellbore pressure and wellhead casing pressure are calculated at this time step.

Abstract: The invention discloses a full wellbore pressure calculation method, device and computer-readable storage medium for fracturing horizontal wells, includes steps: collect basic parameters, establish fully implicit numerical model of formation flow; solve the full implicit numerical model under an inner boundary condition of a constant gas production rate; calculate wellbore pressure change of each fracturing section of horizontal well; calculate the bottom-hole pressure of each fracture initiation point; repeat steps until the variables converge, the bottom-hole flow pressure and the bottom-hole pressure at each fracture initiation point are obtained at this time step; the wellbore pressure and wellhead casing pressure are calculated at this time step.

Abstract: This application provides a signal decoding method, a decoding circuit, and a stylus. One example method includes: sampling a to-be-measured signal based on a predetermined sampling rate to obtain a plurality of sampled signals, where the to-be-measured signal is a modulation signal that carries an interference signal, and the modulation signal is sent by a touch panel of a terminal device; determining at least two edge signals in the to-be-measured signal based on the plurality of sampled signals; and decoding the to-be-measured signal based on the at least two edge signals to obtain the modulation signal.

Abstract: A detection distance calibration method, apparatus, and device are provided. At least one detection signal is collected (S101); a strength value of the at least one detection signal is determined (S102), where the strength value of the detection signal reflects a length of a detection distance; a reference strength value of the detection signal is determined according to the strength value of the at least one detection signal (S103); a calibration threshold is determined according to the reference strength value (S104), where the calibration threshold is used to determine a calibration range of the detection distance; and the detection distance is calibrated according to the calibration threshold and a strength value of a subsequently collected detection signal (S105). Accuracy of calibrating a detection distance can be improved.

Abstract: A frictional false twister is disclosed. The twister has a plurality of rotating friction plates located between the nip of the front rollers and the yarn guide. The friction plates are staggeringly arranged for rubbing a twisted yarn. The spinning direction of the twisted yarn is opposite to the rotating direction of the friction plates. Through the action of the frictional false twister, the twist of the yarn between the false twisting device to the front nip can be increased, shortening the twisting triangle height, and increasing the spinning strength. As the yarn and the outer surface of the friction plate make relative sliding and rubbing, the friction damping force correspondingly reduces the spinning tension in the twisting triangle.

Abstract: A frictional false twister is disclosed. The twister has a plurality of rotating friction plates located between the nip of the front rollers and the yarn guide. The friction plates are staggeringly arranged for rubbing a twisted yarn. The spinning direction of the twisted yarn is opposite to the rotating direction of the friction plates. Through the action of the frictional false twister, the twist of the yarn between the false twisting device to the front nip can be increased, shortening the twisting triangle height, and increasing the spinning strength. As the yarn and the outer surface of the friction plate make relative sliding and rubbing, the friction damping force correspondingly reduces the spinning tension in the twisting triangle.

Abstract: This invention relates to a method for purifying metal alloy and intermetallic powders. Particularly, the present invention relates to a method for the reduction or elimination of the content of the dissolved oxygen and to remove the metal oxide inclusions from metal alloy and intermetallic powders including the steps of: a) placing the metal in powder form into a reaction apparatus; b) introducing a suitable carrier substance to the metal powder; and c) introducing calcium vapour into the reaction apparatus to create a reaction between the metallic powder and calcium vapour thereby removing inclusions in the metal as shown in FIG. 11.

Abstract: This invention relates to a method for producing alloy and intermetallic powders. Particularly to a method for the production of titanium based alloy and intermetallic powders. A first metal and a second metal oxide powder are mixed with a controlled metal/metal oxide molar ratio. This mixture is heated, becomes self propagating and leads to formation of a mixture of alloy liquid and a oxide solid. Pressure is applied to separate the phases and upon cooling produces a metallic solid. FIG. 1a shows an example of a solid crushed into a powder as produced by this method.

Abstract: A method of separating components from a metal based composite, the method including the steps of increasing the size of a component to be separated and separating the increased sized component from the other components of the composite.

Abstract: A method of separating components from a metal based composite, the method including the steps of increasing the size of a component to be separated and separating the increased sized component from the other components of the composite.

Abstract: A titanium based composite which includes a Ti(Al,O) base matrix, discrete ceramic particles, and an oxide layer on the surface of the composite. The discrete ceramic particles are integrally associated with the Ti(Al,O) base matrix and the oxide layer, so that at a temperature of above about 600° C., the composite is substantially resistant to oxidation and spallation.

Abstract: A titanium based composite which includes a Ti(Al,O) base matrix, discrete ceramic particles, and an oxide layer on the surface of the composite. The discrete ceramic particles are integrally associated with the Ti(Al,O) base matrix and the oxide layer, so that at a temperature of above about 600° C., the composite is substantially resistant to oxidation and spallation.

Abstract: A titanium based composite which includes a Ti(Al,O) base matrix, discrete ceramic particles, and an oxide layer on the surface of the composite. The discrete ceramic particles are integrally associated with the Ti(Al,O) base matrix and the oxide layer, so that at a temperature of above about 600° C., the composite is substantially resistant to oxidation and spallation.

Abstract: Titanium based metal matrix composites reinforced with ceramic particulate are well known, based on a blend of titanium alloy powders with ceramic powders, e.g., aluminum oxide powders, utilizing a low energy ball milling process, followed by cold compacting and sintering to produce an appropriate composite. This prior art process is disadvantaged from the point of view that there are virtually no particles in the blend below the micrometer size range, which lack has a deleterious effect on the subsequent processing of the composite. This problem has been overcome by utilizing dry high energy intensive milling in the process, which has the effect of providing the necessary number of small particles below the micrometer size range as well as enhancing the reactivity of different particles with one another.