Abstract: The present invention relates to novel phosphorous (V) (P(V)) reagents methods for preparing thereof, and methods for preparing nucleoside phosphorothioate compounds by using the novel reagents.

Abstract: The present disclosure generally relates to a pre-tightening disc spring, comprising a disc-shaped body which is integrally formed, the disc-shaped body being formed with a central hole, the disc-shaped body having a first contact side and a second contact side which are opposite to each other in a thickness direction of the disc-shaped body, the disc-shaped body being a rotation solid formed by rotating a radial section about a central rotation axis by 360 degrees, the central rotation axis coinciding with a central axis of the central hole, the radial section having a first line segment and an opposing second line segment, the first contact side being defined by rotating the first line segment, the second contact side being defined by rotating the second line segment, a medium-diameter axis being defined to passing a mid-point of the second line segment and extending normally relative to the second line segment, the radial section being mirror-symmetrical relative to the medium-diameter axis, the medium-dia

Abstract: Disclosed is a communication method for a device, a first cloud platform and a second cloud platform. The communication method includes obtaining, by the first cloud platform, a first access token from the second cloud platform. The first access token is configured for the first cloud platform to access a second resource link of a second device on the second cloud platform, and the second device is connected to the second cloud platform. The method also includes obtaining, by the first cloud platform, the second resource link based on the first access token. The method further includes determining, by the first cloud platform, a first resource link of the second device on the first cloud platform based on the second resource link. The first resource link is configured for a first device connected to the first cloud platform to communicate with the second device.

Abstract: Disclosed is a software PUF based on an RISC-V processor for IoT security. A 32-bit RISC-V processor is used to generate abnormal information results in an abnormal operating state under a low voltage, and the abnormal information results are used to represent the features of the 32-bit RISC-V processor; 5-bit binary data obtained by comparing the abnormal information results with normal information results has high randomness and uniqueness and it is extremely difficult to directly extract internal abnormal information result from a hardware circuit of the 32-bit RISC-V processor, so modeling attacks based on the 5-bit binary data calculated according to the abnormal information results of the 32-bit RISC-V processor are almost impossible; in addition, when the 32-bit RISC-V processor is in an abnormal operating state, the operating frequency of the 32-bit RISC-V processor is dynamically adjusted through a frequency compensation method.

Abstract: Described herein are techniques for denoising images of samples produced using polarization microscopy. Polarization images captured by polarization microscopy contain not only signals produced from polarization, but also signals produced from scattering by artifacts (e.g., crystals and/or hemosiderin). These off-target signals reduce the signal-to-noise ratio (SNR) of the birefringent substance of interest, and reduce the utility and accuracy of polarization microscopy for substance quantification. The techniques developed by the inventors and described herein reduce noise resulting from scattering, thus enabling much cleaner, noise-reduced images. The images so produced can be either directly visualized by a medical practitioner or used for downstream machine-learning models. Noise reduction involves i) dividing an image in segments (e.g., pixels or groups of pixels), ii) performing spectral analysis of each segment, and iii) separating each segment on the basis of its spectral profiles.

Abstract: In some aspects, a method, a system, or a non-transitory computer-readable storage medium are described for using a machine learning (ML) model to obtain annotations of a pathology slide image obtained in a first imaging modality, where the ML model is trained based in part on images obtained from a second imaging modality different from the first imaging modality. The first imaging modality is a conventional scanner for whole-slide images (WSI). The second imaging modality may include one or more of multispectral imaging (MSI), polarization imaging, quantitative phase imaging, or a combination thereof. The trained ML model can generate annotations that include more details with higher accuracy in comparison to annotating based on the WSI images alone.

Abstract: Disclosed is a method and system for grid connection management of renewable energy generation, the method comprises: obtaining operating condition data of a first power supply, a second power supply, a power grid, and a load in a preset period; establishing a first optimal control model according to the first condition data, and establishing a second optimal control model; monitoring grid connection management status of the first optimal control model and the second optimal control model; analyzing stability when the first optimal control model is switched to the second optimal control model. The beneficial effects of this disclosure are: completing the switch from the first optimal control model to the second optimal control model in the renewable energy generation grid connection management, which improves the smoothness of control model switching under different load conditions in the renewable energy generation process.

Abstract: A display panel and a display device are disclosed. The display panel includes a display substrate, a plurality rows of first pixel driving circuits, a plurality rows of second pixel driving circuits, and a plurality of first reset signal lines; the plurality of reset signal lines comprises a plurality of first reset signal lines and a plurality of second reset signal lines, each of the first reset signal lines is only electrically connected to one row of the first pixel driving circuits; each of the second reset signal lines is electrically connected to one row of the first pixel driving circuits and at least one row of the second pixel driving circuits.

Abstract: An over-the-range cooking appliance for mounting to an underside of a wall cabinet, where the cooking appliance includes: an enclosure with a cooking cavity for food and where the enclosure includes at least a rear-facing side and a top-facing side; a wall bracket configured to be secured to the wall near the wall cabinet and configured to support the enclosure; and a cabinet bracket to support the enclosure from the underside of the wall cabinet. The cabinet bracket includes a first and second cooperating latch member, where the first cooperating latch member is mounted on the underside of the cabinet and the second cooperating latch member is mounted on the top-facing side of the enclosure. The cooperating latch members are respectively configured to latch to one another when the enclosure is supported on the wall bracket proximate the bottom of the rear-facing side thereof and tilted upwardly.

Abstract: A method for quantifying and assessing a scheduling risk considering source load fluctuation and rescheduling, and an apparatus for quantifying and assessing a scheduling risk considering source load fluctuation and rescheduling are provided. The method includes establishing a scene set considering a new energy disturbance; establishing and solving a rescheduling optimization model considering the new energy disturbance in each scene based on a preset scheduling plan according to the scene set, so as to obtain a solving result of the rescheduling optimization model; and calculating a risk quantifying and assessing result corresponding to the preset scheduling plan according to the solving result of the rescheduling optimization model.

Abstract: This application provides a pathological section image processing method performed by a computer device. The method includes: obtaining stained images of a pathological section after cell membrane staining; determining cell nucleus positions of cancer cells in a stained image under an ith field of view in the n fields of view; generating a cell membrane description result of the stained image under the ith field of view, the cell membrane description result being used for indicating completeness and staining intensity of the cell membrane staining; determining quantities of cells of types in the stained image under the ith field of view according to the cell nucleus positions and the cell membrane description result; and determining an analysis result of the pathological section according to quantities of the cells of types in the stained images under the n fields of view.

Abstract: The present disclosure is related to systems and methods for indoor positioning. The method includes obtaining a first location of a subject at a first time point. The method also includes determining one or more motion parameters associated with the subject at least based on one or more sensors carried by the subject. The method further includes determining, based on the first location of the subject and the one or more motion parameters associated with the subject, a second location of the subject at a second time point after the first time point. The method still further includes adjusting, at least based on surroundings information associated with the subject at the second time point, the second location of the subject to determine a target location of the subject.

Abstract: A transient electromagnetic device with variable shape and turns includes squares, a transmitting coil carrying frame, a transmitting coil, a turns-variable device, a current generator and a working power supply. The transmitting coil carrying frame is arranged inside the transmitting coil; the transmitting coil carrying frame is configured as a carrier of the transmitting coil, and configured for adjusting a side length of the transmitting coil and a shape of the transmitting coil; the square is configured for clamping and connecting the transmitting coil and the transmitting coil carrying frame to fix the transmitting coil to the transmitting coil carrying frame. The current generator is configured for generating transient current; the turns-variable device is configured for changing the turns of the transmitting coil; and the transmitting coil is configured for transmitting the transient current to a target area to be measured.

Abstract: A support stand for photography includes a support main body having supporting ends and a mounting end and an adapting device provided at the mounting end. The supporting ends are formed on supporting legs of the support main body. The supporting legs can be unfolded to allow two adjacent supporting ends to move away from each other. The supporting legs can be folded to allow the two adjacent supporting ends to move close to each other and form a gap between two adjacent supporting legs. The adapting device includes a fixed seat provided with an adapting structure for mounting a first photographic equipment and a clamping seat configured to clamp a second photographic equipment. The clamping seat is rotatably connected to the fixed seat. The clamping seat can rotate toward a side where the supporting ends are located to be accommodated in the gap between the two adjacent supporting legs.

Abstract: A system for detecting Denial-of-Service (DoS) attacks on one or more user profiles collects a number of invalid sign-on attempts on the one or more user profiles during every time interval. The system determines a number of invalid sign-on attempts on every user profile since the start of the first time interval. The system detects a first DoS attack on a particular user profile if a first number of invalid sign-on attempts on the particular user profile exceeds a single-user profile. The system detects a second DoS attack on multiple user profiles during the first time interval if the increase in the total number of invalid sign-on attempts since the last time interval exceeds a scan-level threshold number. The system detects a third DoS attack on multiple user profiles if the total number of invalid sign-on attempts detected during combined time intervals exceeds a third threshold number.

Abstract: A method for producing copper carboxylate, a wood preservative composition comprising copper carboxylate, and a wood product produced therefrom are provided. The method comprises combining a hydrocarbon solvent, a copper compound, and carboxylic acid and contacting the copper compound with the carboxylic acid in the presence of the hydrocarbon solvent to form a reaction product comprising copper carboxylate.

Abstract: A curling device and a flexible display device are provided. The curling device includes: the electromagnetic telescoping mechanism and the controller are in communication connection; the electromagnetic telescopic mechanism is configured to connect with the flexible display panel element and expanding under the action of the magnetic field when receiving a first signal of the controller so as to drive the flexible display panel element to expand; when a second signal of the controller is received, the flexible display panel element is curled, so that the flexible display panel element is driven to curl.

Abstract: The present disclosure provides a medical image segmentation method. The medical image segmentation method includes acquiring a to-be-processed medical image set, the to-be-processed medical image set including a plurality of to-be-processed medical images corresponding to different time points, processing the to-be-processed medical image set in a time dimension according to the to-be-processed medical images and the time points corresponding to the to-be-processed medical images to obtain a temporal dynamic image, and extracting a target region feature from the temporal dynamic image by using a medical image segmentation model, to acquire a target region.

Abstract: A method for determining a three-dimensional tortuosity of a loose and broken rock-soil mass, includes the following steps: a particle grading curve of the loose and broken rock-soil mass is obtained by utilizing a particle size analysis, and followed by calculating an equivalent particle size and an average particle size; a porosity of the loose and broken rock-soil mass is obtained by utilizing a moisture content test, a density test, and a specific gravity test; the three-dimensional tortuosity of the loose and broken rock-soil mass is obtained by utilizing the equivalent particle size, the average particle size and the porosity of the loose and broken rock-soil mass. The method has the advantages of simple logic, accuracy and reliability, simple and fast parameter determination, and has high practical value and promotion value in the field of environmental protection and ecological restoration technology.