Abstract: Methods and apparatuses of boundary refinement for instance segmentation. The methods for instance segmentation include receiving an image and an instance mask identifying an instance in the image; extracting a set of image patches from the image based on a boundary of the instance mask; generating a refined mask patch for each of the set of image patches based on at least a part of the instance mask corresponding to the each of the set of image patches; and refining the boundary of the instance mask based on the refined mask patch for each of the set of image patches.

Abstract: Provided is an aldehyde binder, specifically, disclosed is a compound as represented by formula (II) or a pharmaceutically acceptable salt.

Abstract: A control method for a fan, a fan, a household appliance, and a computer-readable storage medium are provided. The fan includes an electric motor. The control method includes: controlling the electric motor to start to operate through a d-axis current command in response to a start command; obtaining an actual speed of the electric motor, and starting timing when the actual speed reaches a first target speed; and decreasing, when the timed duration reaches a first preset duration, a d-axis current corresponding to the d-axis current command until the d-axis current is decreased to 0, and increasing a q-axis current corresponding to a q-axis current command until the q-axis current is increased to a first target current.

Abstract: A control method for an electric motor, an electric motor, and a computer-readable storage medium are provided. According to the method, in a current control cycle, a first theoretical sector corresponding to a voltage vector of an electric motor is determined; in the previous control cycle of the current control cycle, a first sector corresponding to the voltage vector is obtained; a target control cycle in multiple historical control cycles which precede the current control cycle is determined, and an interval duration between the target control cycle and the current control cycle is determined; a target sector corresponding to the voltage vector in the current control cycle based on the first theoretical sector, the first sector, and the interval duration is determined; and a corresponding driving signal based on the target sector is generated, and the electric motor is driven to operate based on the driving signal.

Abstract: The invention relates to a long non-coding RNA (LETN) useful as a diagnostic and therapeutic target for cancer. In particular, the invention discloses that lncRNA RP11-196G18.22 (LETN) is overexpressed in cancer cells, and such overexpression can promote the proliferation of cancer cells and are associated with short prognostic survival time in cancer patients.

Abstract: The present invention provides a point cloud data acquisition method and device under a situation of no GNSS signal. The method comprises: re-sampling line data acquired from a topographic map to obtain discrete line data; generating a full-second PPS pulse in a simulating manner; counting by using a distance measuring instrument, sampling the count, when it is detected that the full-second PPS pulse is received, calculating position information at a current moment; simulating a GNSS satellite protocol according to the position information at the current moment; parsing the GNSS satellite protocol by using a point cloud data acquisition module to complete time synchronization, and controlling a LiDAR to acquire point cloud data; parsing the GNSS satellite protocol by using an inertial measurement module, and recording attitude determination positioning data in real time to generate POS data; and optimizing the POS data to obtain accurate point cloud data.

Abstract: The present disclosure relates to a device for printing a lumen tissue construct, a method for using the same, and a 3D bioprinter. The device includes a spray head assembly for printing a biological construct; and a bioprinting platform for supporting a lumen tissue, and for carrying a biological construct printed by the spray head assembly, and for applying the biological construct to an inner surface of the lumen tissue. The device for printing a lumen tissue construct of the present disclosure provides the spray head assembly and the bioprinting platform, and the spray head assembly applies the biological construct onto the inner surface of the lumen tissue by the bioprinting platform, to avoid such problems as recurrence of thrombus and restenosis of a lumen after the lumen tissue has been implanted for a long time, thereby improving the biological reliability of the lumen tissue.

Abstract: A constant air volume control method includes acquiring a target air volume for a ventilation device, detecting a present rotational speed and a present torque of a motor of the ventilation device, selecting an air volume calculation formula corresponding to the target air volume according to a preset correspondence relation between air volumes and air volume calculation formulas, calculating a present air volume corresponding to the present rotational speed and the present torque, and adjusting motor parameters of the ventilation device according to a difference between the present air volume and the target air volume.

Abstract: The present disclosure relates to a manufacturing method of a lumen tissue construct. The manufacturing method of a lumen tissue construct comprises: step 1: installing elastic film on a support in a sleeving manner; step 3: printing a biological construct on the elastic film; step 5: forming a construct bonding layer on the biological construct; and step 7: bonding a lumen tissue to the construct bonding layer. In the manufacturing method of the lumen tissue construct of the present disclosure, the printed biological construct is assembled on the inner surface of the lumen tissue to form the lumen tissue construct, thereby helping to avoid occurrence of problems such as recurrence of thrombus, restenosis of lumen and the like after the lumen tissue construct is implanted for a long time, and improving the biological reliability of the lumen tissue construct.

Abstract: The present invention provides a point cloud data acquisition method and device under a situation of no GNSS signal. The method comprises: re-sampling line data acquired from a topographic map to obtain discrete line data; generating a full-second PPS pulse in a simulating manner; counting by using a distance measuring instrument, sampling the count, when it is detected that the full-second PPS pulse is received, calculating position information at a current moment; simulating a GNSS satellite protocol according to the position information at the current moment; parsing the GNSS satellite protocol by using a point cloud data acquisition module to complete time synchronization, and controlling a LiDAR to acquire point cloud data; parsing the GNSS satellite protocol by using an inertial measurement module, and recording attitude determination positioning data in real time to generate POS data; and optimizing the POS data to obtain accurate point cloud data.

Abstract: A device and method for printing lumen tissue constructs and a 3D bioprinter are disclosed. The device has a spray sprayhead assembly and a bioprinting platform. The spray sprayhead assembly prints a biological construct on an inner surface of a lumen tissue by the bioprinting platform. Problems, such as, recurrence of thrombus and restenosis of a lumen after the lumen tissue has been transplanted for a long time, can be avoided. The biological reliability of the lumen tissue can be improved.

Abstract: A device and method for printing lumen tissue constructs and a 3D bioprinter are disclosed. The device has a spray sprayhead assembly and a bioprinting platform. The spray sprayhead assembly prints a biological construct on an inner surface of a lumen tissue by the bioprinting platform. Problems, such as, recurrence of thrombus and restenosis of a lumen after the lumen tissue has been transplanted for a long time, can be avoided. The biological reliability of the lumen tissue can be improved.

Abstract: A hydraulic ship lift, including: a mechanical synchronizing system; a stabilizing and equalizing hydraulic driving system; and a self-feedback stabilizing system. The stabilizing and equalizing hydraulic driving system includes first resistance equalizing members arranged at corners of branch water pipes or/and second resistance equalizing members arranged at bifurcated pipes, circular forced ventilating mechanisms arranged at front of water delivery valves of a water delivery main pipe, and pressure-stabilizing and vibration-reducing boxes arranged behind the water delivery valves. The self-feedback stabilizing system includes a plurality of guide wheels; each guide wheel of the self-feedback stabilizing system is fixed on a ship reception chamber through a supporting mechanism.

Abstract: The present disclosure relates to a device for printing lumen tissue construct, a method for using the same and 3D bioprinter. Wherein, the device includes a spray head assembly for printing a biological construct; and a bioprinting platform for supporting a lumen tissue, and for carrying a biological construct printed by the spray head assembly, and for applying the biological construct to an inner surface of the lumen tissue. The device for printing lumen tissue construct of the present disclosure provides the spray head assembly and the bioprinting platform, and the spray head assembly applies the biological construct onto the inner surface of the lumen tissue by the bioprinting platform, to avoid such problems as recurrence of thrombus and restenosis of a lumen after the lumen tissue has been implanted for a long time, thereby improving the biological reliability of the lumen tissue.

Abstract: The present invention relates to a device for printing lumen tissue construct, a method for using the same and a 3D bioprinter. Wherein, the device comprises a spray sprayhead assembly and a bioprinting platform, the spray sprayhead assembly prints a biological construct on an inner surface of a lumen tissue by the bioprinting platform. the device for printing lumen tissue construct of the present invention provides the sprayhead assembly and the bioprinting platform, and the sprayhead assembly prints the biological construct on the inner surface of the lumen tissue by the bioprinting platform, thus avoid such problems as recurrence of thrombus and restenosis of a lumen after the lumen tissue has been transplanted for a long time, thereby improving the biological reliability of the lumen tissue.

Abstract: A hydraulic ship lift, including: a mechanical synchronizing system; a stabilizing and equalizing hydraulic driving system; and a self-feedback stabilizing system. The stabilizing and equalizing hydraulic driving system includes first resistance equalizing members arranged at corners of branch water pipes or/and second resistance equalizing members arranged at bifurcated pipes, circular forced ventilating mechanisms arranged at front of water delivery valves of a water delivery main pipe, and pressure-stabilizing and vibration-reducing boxes arranged behind the water delivery valves. The self-feedback stabilizing system includes a plurality of guide wheels; each guide wheel of the self-feedback stabilizing system is fixed on a ship reception chamber through a supporting mechanism.