Abstract: The present application discloses a carrier wave distortion compensation method for an MWD mud continuous wave system, comprising: in the downhole, modulating the carrier wave according to the transmission data to obtain a mud continuous wave signal to be transmitted; transmitting the mud continuous wave signal to the ground via a mud channel; denoising the received pressure signal on the ground to obtain a denoised mud continuous wave signal; performing subsequent processing on the denoised mud continuous wave signal to obtain the final transmission data; and performing downhole distortion compensation before modulating the carrier wave or performing ground distortion compensation on the denoised mud continuous wave signal before performing subsequent processing. The present application reduces the bit error rate of the MWD mud continuous wave system by performing waveform distortion compensation prior to downhole modulation or during performing signal processing on the ground.

Abstract: Disclosed is a synchronization method for an MWD mud pulse telemetry system. The method comprises: determining a synchronous training sequence on the basis of a frame structure of downhole sent data; constructing a correlation between the down-hole sending synchronous training sequence waveform and the uphole synchronous training sequence local waveform by means of the irrelevance of the trigonometric function; and performing correlation calculation on the synchronous training codeword waveform, which is received uphole and is subjected to the first modulation, and the synchronous training sequence local waveform, which is subjected to the second modulation, so as to obtain a correlation curve, and finding a synchronous position by means of the correlation curve.

Abstract: A ground receiving front-end compensation system for intelligent guide drilling borehole-ground electromagnetic transmission is provided, and includes a ground sensing module located below the underground wellhead, a ground system located between the underground wellhead and the measuring electrode, a measuring electrode and a compensation electrode; the ground system, the measuring electrode and the compensation electrode are located at the same side of the underground wellhead, a measuring electrode spacing (a first preset distance) is a distance from the underground wellhead to the measuring electrode; a compensation electrode spacing (a second preset distance) is a distance from the underground wellhead to the compensation electrode, the second preset distance is greater than the first preset distance; an induction signal of the ground sensing module enters the ground system, and the ground system outputs compensation current based on the induction signal, and compensates the measuring signal based on the

Abstract: A ground receiving front-end compensation system for intelligent guide drilling borehole-ground electromagnetic transmission is provided, and includes a ground sensing module located below the underground wellhead, a ground system located between the underground wellhead and the measuring electrode, a measuring electrode and a compensation electrode; the ground system, the measuring electrode and the compensation electrode are located at the same side of the underground wellhead, a measuring electrode spacing (a first preset distance) is a distance from the underground wellhead to the measuring electrode; a compensation electrode spacing (a second preset distance) is a distance from the underground wellhead to the compensation electrode, the second preset distance is greater than the first preset distance; an induction signal of the ground sensing module enters the ground system, and the ground system outputs compensation current based on the induction signal, and compensates the measuring signal based on the

Abstract: The present application discloses a carrier wave distortion compensation method for an MWD mud continuous wave system, comprising: in the downhole, modulating the carrier wave according to the transmission data to obtain a mud continuous wave signal to be transmitted; transmitting the mud continuous wave signal to the ground via a mud channel; denoising the received pressure signal on the ground to obtain a denoised mud continuous wave signal; performing subsequent processing on the denoised mud continuous wave signal to obtain the final transmission data; and performing downhole distortion compensation before modulating the carrier wave or performing ground distortion compensation on the denoised mud continuous wave signal before performing subsequent processing. The present application reduces the bit error rate of the MWD mud continuous wave system by performing waveform distortion compensation prior to downhole modulation or during performing signal processing on the ground.

Abstract: An electronic device includes a communication device and a user interface. The communication device detects establishment of an electrical communication channel to a content presentation companion device. One or more processors operable with the communication device and the user interface cause the communication device to query the content presentation companion device for a content presentation companion device port facilitating the electrical communication channel and, in response, cause the user interface to identify the content presentation companion device port.

Abstract: An electronic device includes a communication device and a user interface. The communication device detects establishment of an electrical communication channel to a content presentation companion device. One or more processors operable with the communication device and the user interface cause the communication device to query the content presentation companion device for a content presentation companion device port facilitating the electrical communication channel and, in response, cause the user interface to identify the content presentation companion device port.

Abstract: An electronic device includes a communication device and one or more processors operable with the communication device. The one or more processors, in response to the communication device identifying a port establishing a display data channel, causing the communication device to transmit an extended display identification (EDID) extension or second-generation EDID file structure comprising an identity of the port using the display data channel.

Abstract: A ground transmitting system and method for electromagnetic transmission between a well and a ground for intelligent drill guiding includes a well site power generation device, a ground transmitting device and current transmission ground electrodes. The well site power generation device, the ground transmitting device and the current transmission ground electrodes are connected in sequence. The well site power generation device is used for supplying power to the ground transmitting device. The ground transmitting device is used for sending generated current waveform to the current transmission ground electrodes through a transformer. The current transmission ground electrodes are used for sending the current waveform to an underground receiver through a drill pipe and strata to complete a ground transmitting for the electromagnetic transmission between the well and the ground for the drill guiding.

Abstract: An information processing method includes receiving a user input, the user input representing a trajectory, performing recognition on the trajectory to obtain a matching result based on matching in a database, recording the trajectory to generate an image including the trajectory, and outputting a candidate option. The candidate option includes the matching result and an identifier of an image.

Abstract: The present disclosure provides an inductive magnetic sensor, which includes a signal pre-amplifying measurement circuit, a feedback loop, a magnetic core and coil group, a low-noise autozero processing circuit, and an output protection module. The magnetic core and coil group is electrically connected between the signal pre-amplifying measurement circuit and the feedback loop, the signal pre-amplifying measurement circuit comprises the low-noise autozero processing circuit, and the feedback loop and the low-noise autozero processing circuit are electrically connected to the output protection module respectively. By introducing the resonant notch filter, it may extend the passband to the low frequency, and extend the low-frequency characteristic of the magnetic sensor, to obtain a better low-frequency magnetic sensor. The present disclosure further provides an electromagnetic prospecting equipment.

Abstract: Disclosed is a synchronization method for an MWD mud pulse telemetry system. The method comprises: determining a synchronous training sequence on the basis of a frame structure of downhole sent data; constructing a correlation between the down-hole sending synchronous training sequence waveform and the uphole synchronous training sequence local waveform by means of the irrelevance of the trigonometric function; and performing correlation calculation on the synchronous training codeword waveform, which is received uphole and is subjected to the first modulation, and the synchronous training sequence local waveform, which is subjected to the second modulation, so as to obtain a correlation curve, and finding a synchronous position by means of the correlation curve.

Abstract: A reinforcement and bearing capacity calculation method for a self-stressed bridge deck link slab includes: calculating a cross-section moment of inertia of the link slab and a negative moment borne by the link slab; introducing a design self-stress according to stress distribution of the self-stressed bridge deck link slab, whether reinforced or un-reinforced; calculating a cracking moment of the plain self-stressed bridge deck link slab, comparing the cracking moment and the negative moment, proceeding to the next step, or configuring a structural reinforcement as needed; determining a design strength of reinforcement, selecting a reinforcement ratio, and calculating a resisting moment of the link slab; comparing the resisting moment and the negative moment of the link slab, design conditions are satisfied, or configuring the reinforcement ratio and carrying out iterative calculation to obtain a resisting moment; and analyzing stress on the reinforcement and concrete.

Abstract: An information processing method includes receiving a user input, the user input representing a trajectory, performing recognition on the trajectory to obtain a matching result based on matching in a database, recording the trajectory to generate an image including the trajectory, and outputting a candidate option. The candidate option includes the matching result and an identifier of an image.

Abstract: The display module (100) includes: a supporting member (2) and a display panel (2), supporting member (1) includes an interlayer part (11) and a supporting part (12), the surface of the side of the supporting part (12) that is away from the interlayer part (11) is a supporting curved face (121), the supporting curved face (121) protrudes in the direction away from the interlayer part (11), the display panel (2) includes a non-bending part (21), a bending part (22) and a connecting part (23), the non-bending part (21) and the connecting part (23) are located on the two sides of the interlayer part (11) in the thickness direction of the interlayer part (11), the bending part (22) supports the side of the supporting part (12) that is away from the interlayer part (11), and the inner surface of the bending part (22) adheres to the supporting curved face (121).

Abstract: An application of a compound using intra-cyclic peroxo-bridged sesquiterpenes as a parent nucleus in metabolism-related fatty liver diseases is provided. The compound using intra-cyclic peroxo-bridged sesquiterpenes as the parent nucleus has the structure shown in Formula I, where A denotes O, —OH, OCH3, —OCH2CH3, or —OC4H5O3. The compound using intra-cyclic peroxo-bridged sesquiterpenes as the parent nucleus is configured for preparing a drug or a composition for treating metabolism-related fatty liver diseases. The present invention demonstrates that the compound using intra-cyclic peroxo-bridged sesquiterpenes as the parent nucleus can improve the function of mitochondria. in liver cells and enhance the fatty acid ?-oxidation capacity thereof and can be used for the treatment of metabolic dysfunction due to mitochondrial dysfunction, as well as the resulting liver fat accumulation, inflammation, and fibrotic lesions.

Abstract: An all-band magnetic sensor is provided. The all-band magnetic sensor comprises an induction coil, a voltage measurement module, and an integrator; the induction coil is used for generating an induced electromotive force according to magnetic flux passing therethrough; an impedance transformation circuit is connected to the output end of the induction coil and used for improving the loop resistance of the induction coil; the voltage measurement module is electrically connected to the impedance transformation circuit, and used for measuring the induced electromotive force generated by the induction coil; and the integrator is electrically connected to the voltage measurement module, and used for expanding a bandwidth.

Abstract: The present disclosure provides an inductive magnetic sensor, which includes a signal pre-amplifying measurement circuit, a feedback loop, a magnetic core and coil group, a low-noise autozero processing circuit, and an output protection module. The magnetic core and coil group is electrically connected between the signal pre-amplifying measurement circuit and the feedback loop, the signal pre-amplifying measurement circuit comprises the low-noise autozero processing circuit, and the feedback loop and the low-noise autozero processing circuit are electrically connected to the output protection module respectively. By introducing the resonant notch filter, it may extend the passband to the low frequency, and extend the low-frequency characteristic of the magnetic sensor, to obtain a better low-frequency magnetic sensor. The present disclosure further provides an electromagnetic prospecting equipment.

Abstract: An all-band magnetic sensor is provided. The all-band magnetic sensor comprises an induction coil, a voltage measurement module, and an integrator; the induction coil is used for generating an induced electromotive force according to magnetic flux passing therethrough; an impedance transformation circuit is connected to the output end of the induction coil and used for improving the loop resistance of the induction coil; the voltage measurement module is electrically connected to the impedance transformation circuit, and used for measuring the induced electromotive force generated by the induction coil; and the integrator is electrically connected to the voltage measurement module, and used for expanding a bandwidth.

Abstract: Provided is a lateral pressure resistant remote optical cable, including an outer sheath, at least one loosen tube and optical fibers, wherein raw materials of the loose tube are of the following formula: 80-120 parts of PBT, 25-40 parts of PU, 40-80 parts of LLDPE-g-GMA, 1-3 parts of modified graphite nanosheets, and 2-8 parts of chopped carbon fibers, wherein the modified graphite nanosheets have a diameter of 60-150 nm, and a thickness of 2.5-8 nm; the chopped carbon fibers have a length of 2-15 ?m, and a length-diameter ratio of 10-30; the loosen tube is prepared through the following steps: heating formula amount of PBT, PU and LLDPE-g-GMA and uniformly stirring them till the raw materials are completely molten; maintaining the temperature and adding the chopped carbon fibers while stirring; adding the modified graphite nanosheets, and keeping stirring; then transferring a melt into an extruder to obtain the loosen tube.