Abstract: The present disclosure relates to an efficient biodegradable dust suppressant for an open-pit mine and a preparation method therefor. The dust suppressant includes the following components in percentage by weight: 2%-3.5% of gallic acid, 1.5%-2% of sodium alginate, 0.25%-2% of a surfactant, 0.5%-1% of an antifreeze liquid, and balance water. The preparation method includes the following steps: (1) preparing the gallic acid; (2) preparing the antifreeze liquid; (3) weighing the components in parts by weight; (4) mixing the gallic acid, water, sodium alginate and antifreeze liquid; (5) adding the surfactant; and (6) adding the balance water to prepare the efficient biodegradable dust suppressant for an open-pit mine. The present disclosure has the characteristics of low temperature resistance, high temperature resistance, bonding, wetting, coal dust consolidation and the like, is biodegradable, and does not cause secondary pollution.

Abstract: A three-dimensional (3D) memory device includes a doped semiconductor layer, a stack structure, and a channel structure. The stack structure includes interleaved conductive layers and dielectric layers formed on the doped semiconductor layer. The conductive layers include a plurality of word lines, and a drain select gate line. The channel structure extends through the stack structure along a first direction and is in contact with the doped semiconductor layer. The drain select gate line includes a first dielectric layer in contact with the channel structure, and a first polysilicon layer in contact with the first dielectric layer.

Abstract: Techniques for improving computing device operations are provided. A system can include an organizational database that stores a centralized set of organizational data having a plurality of device objects and a plurality of employee objects. The system can receive a notification associated with the first employee object. Additionally, the system can determine, using the organizational database, that the first device object is associated with the first employee. Moreover, the system can access a device policy for the first device object. Furthermore, the system can evaluate the device policy based at least in part on data associated with the first employee object and the notification. The evaluation of the device policy includes running a query expression against the centralized set of organizational data to return a query result. Subsequently, the system can execute an action based on the query result. The action can be associated with the first computing device.

Abstract: Disclosed in the present invention is a terahertz kinetic inductance bolometer, including a superconducting thin film layer, a terahertz antenna, a cutoff layer and a Si substrate, wherein the superconducting thin film layer and the terahertz antenna are respectively deposited on the cutoff layer, and the cutoff layer is deposited on the Si substrate; the superconducting thin film layer includes a superconducting feeder line, an inter-digital capacitor and an inductor coil; the inter-digital capacitor is connected with the inductor coil in parallel to form an oscillation circuit; the terahertz antenna is adjacent to the inductor coil and is used to convert a received terahertz signal into heat so that the inductor coil produces an inductance change; a resonance frequency in the inter-digital capacitor changes through the inductance change; and the superconducting feeder line receives the varying resonance frequency, through which an light intensity of the terahertz signal can be obtained to complete the detec

Abstract: Provided are an essential oil composition and a preparation method thereof. The essential oil composition includes a eutectic composition and an essential oil; the eutectic composition includes a hydrogen-bond donor and a hydrogen-bond acceptor; the hydrogen-bond donor is geranic acid or derivatives of the geranic acid; the hydrogen-bond acceptor is choline or derivatives or hydrates of the choline; a mass ratio of the hydrogen-bond donor to the hydrogen-bond acceptor is 1-10:1-10.

Abstract: An example electronic device includes a network communication interface to connect to a conference server, a central control device communication interface to connect to a local central control device, a microphone and a processor. The processor is to receive audio at the microphone and send the audio to the local central control device and to the conference server. The processor is to send the audio to the local central control device such that it is received by a nearby electronic device before the audio is received from the conference server by the nearby electronic device.

Abstract: The present invention relates to unsupervised tracking technology, specifically an unsupervised tracking model training strategy based on contrastive loss. The method comprises: S1: forming a constrained SSCI module using the relation between objects within a video frame and between adjacent video frames; S2: setting features of different objects in each frame as negative samples, and similar adjacent frame objects as positive sample pairs, constructing contrastive loss; S3: constraining embedded features (E_t) by variable loss based on self-supervised contrastive loss. This invention provides a contrastive loss-based training strategy for unsupervised multi-object tracking, leveraging the prior that objects in a frame must be different to enhance object similarity, and using self-supervised learning to match similar objects in short-interval frames as positive samples to boost cross-frame feature expression.

Abstract: An image construction method and system for a heating area is provided. The method includes: obtaining an initial image according to a heating structure diagram and a building structure diagram of the heating area; segmenting the initial image according to heating attribute of the heating area to obtain a plurality of segmentation sub-graphs; performing first collection on a surface temperature of a heating pipeline according to pre-deployed surface devices corresponding to the segmentation sub-graphs, and setting first heating labels corresponding to the segmentation sub-graphs, and meanwhile, performing second collection on a regional temperature of a sub-area of the heating pipeline being located according to a pre-deployed monitoring device corresponding to the segmentation sub-graphs, and setting second heating labels; performing position and temperature analysis on a label setting result of each of the segmentation sub-graphs to obtain a heating image of the heating area.

Abstract: Disclosed in the present disclosure are a flood event identification method and apparatus, an electronic device, and a readable storage medium. The method includes: obtaining runoff time sequence data; obtaining initial peak occurrence time by using N continuous first-order difference values in a first-order difference sequence of the runoff time sequence data; obtaining initial start and end time by using M continuous first-order difference values in the first-order difference sequence; and screening out determined peak occurrence time from the initial peak occurrence time, and screening out start and end time corresponding to the peak occurrence time from the initial start and end time. With the technical solution provided by the present disclosure, flood events can be automatically selected with high efficiency and accuracy.

Abstract: Electronic devices, electronic modules, and methods for manufacturing electronic devices and/or electronic modules are described herein. In some embodiments, the present invention may be directed to an electronic module that includes a pair of printed circuit boards (PCBs) and a capacitor positioned between the PCBs. Each of the PCBs may include a pair of vias configured to provide electrical connections through the PCB, and the capacitor may include a pair of pins. Each pin of the capacitor may be aligned with a via of one of the PCBs and a corresponding via of the other PCB such that each pin is configured to provide electrical connection between the two PCBs. Additionally, the pair of pins may be configured to support the PCBs with respect to each other.

Abstract: Various trashcans, their coatings, and coatings for other household goods are disclosed. In certain implementations, the disclosed coatings are antimicrobial. Various methods for forming antimicrobial coatings for household goods are also disclosed. In some embodiments, the antimicrobial coating comprises a substrate and an antimicrobial agent. In certain implementations the coating can be applied to a household good where the coating leaves a substantially streak-free finish. Some embodiments pertain to protective films that can be removed from a coated household good without leaving residue.

Abstract: A display may have a stretchable portion with hermetically sealed rigid pixel islands. A flexible interconnect region may be interposed between the hermetically sealed rigid pixel islands. The hermetically sealed rigid pixel islands may include organic light-emitting diode (OLED) pixels. A conductive cutting structure may have an undercut that causes a discontinuity in a conductive OLED layer to mitigate lateral leakage. The conductive cutting structure may also be electrically connected to a cathode for the OLED pixels and provide a cathode voltage to the cathode. First and second inorganic passivation layers may be formed over the OLED pixels. Multiple discrete portions of an organic inkjet printed layer may be interposed between the first and second inorganic passivation layers.

Abstract: A device includes a gate stack; a gate spacer on a sidewall of the gate stack; a source/drain region adjacent the gate stack; a silicide; and a source/drain contact electrically connected to the source/drain region through the silicide. The silicide includes a conformal first portion in the source/drain region, the conformal first portion comprising a metal and silicon; and a conformal second portion over the conformal first portion, the conformal second portion further disposed on a sidewall of the gate spacer, the conformal second portion comprising the metal, silicon, and nitrogen.

Abstract: A display panel and a display device are provided. The display panel includes a first display area, a second display area and a pixel circuit. The pixel circuit includes a first pixel circuit and a second pixel circuit. The first pixel circuit is connected to a light emitting element in the first display area. The second pixel circuit is connected to a light emitting element in the second display area. The pixel circuit operates in a first mode and a second mode. In the first mode, the first display area corresponds to a refresh rate of F11, and the second display area corresponds to a refresh rate of F12. In the second mode, the first display area corresponds to a refresh rate of F21, and the second display area corresponds to a refresh rate of F22. There is a relationship of |F21?F11|?|F22?F12|.

Abstract: Provided are an essential oil composition and a preparation method thereof. The essential oil composition includes a eutectic composition and an essential oil; the eutectic composition includes a hydrogen-bond donor and a hydrogen-bond acceptor; the hydrogen-bond donor is geranic acid or derivatives of the geranic acid; the hydrogen-bond acceptor is choline or derivatives or hydrates of the choline; a mass ratio of the hydrogen-bond donor to the hydrogen-bond acceptor is 1-10:1-10.

Abstract: The present invention provides a liquid crystal composition and a liquid crystal display device thereof. The liquid crystal composition comprises at least one compound of general formula I and at least one compound of general formula II. The liquid crystal composition has a larger vertical dielectric constant (??), a larger ratio of the vertical dielectric constant to the absolute value of dielectric anisotropy (??/|??|), a larger Kave value and a higher transmittance while maintaining an appropriate clearing point, an appropriate optical anisotropy, and an appropriate absolute value of the dielectric anisotropy, such that the liquid crystal display device comprising the same has a better contrast, a faster response speed and a better transmittance while maintaining an appropriate range of operating temperature and an appropriate threshold voltage.

Abstract: A method for calibrating extrinsic parameters of surround-view cameras on a vehicle includes: determining extrinsic parameters of the first camera and the second camera; determining a first pose initial value, a second pose initial value, a third pose initial value, and a fourth pose initial value; determining extrinsic parameters of the third camera and fourth camera according to the extrinsic parameters of the first camera and second camera, the first pose initial value, the second pose initial value, the third pose initial value, and the fourth pose initial value. According to the visual odometer information of the first camera and the second camera, the extrinsic parameters of the first camera and second camera are first determined, and the extrinsic parameters of the third camera and fourth camera are then determined according to the extrinsic parameter of the first camera and the extrinsic parameter of the second camera.

Abstract: The present invention discloses the low-stress niobium nitride (NbN) superconducting thin film and preparation method and application thereof. The preparation method includes the following steps: providing the metal Nb target and the Si-based substrates, fixing the Si-based substrate at room temperature, adjusting the mass flow ratio of N2/Ar to 20%-50%, the sputtering power to 50-400 W and the deposition pressure to 3.0-10.0 mTorr, NbN superconducting thin films with a stress range of-500 MPa˜500 MPa and a thickness of 70-150 nm were deposited on Si-based substrates. By synergistically controlling the mass flow rate ratio of N2/Ar, sputtering power, and deposition pressure, low stress NbN superconducting thin films can be easily and efficiently prepared. The stress range of the prepared NbN superconducting thin films meets the preparation requirements of superconducting dynamic inductance detectors, and can be mass-produced.

Abstract: An anti-inhibin antibody and its applications are provided. The antibody can have the inhibitory effect of inhibins on the secretion of endogenous follicle-stimulating hormone (FSH), promote the secretion of endogenous FSH and promote the development of animal follicles. The antibody can replace the use of FSH or pregnant mare serum Gonadotropin (PMSG) in animal reproduction, and can be used for promoting animal reproduction, estrus synchronization, conception and birth, embryo transferring, improving ovulation quality, promoting livestock reproduction, and inducing estrus in female livestock.

Abstract: A method for signal transmission and apparatus thereof are provided. Particularly, an uplink signal transmission method is provided, comprising: reporting parameters of signal transmission quality in a specific modulation mode; acquiring configuration parameters of an uplink physical channel and/or a physical signal; and transmitting an uplink signal according to the configuration parameters of the uplink physical channel and/or the physical signal.