Abstract: Provided is a method for preparing Rebaudioside C using an enzymatic method, comprising using rubusoside or dulcoside A as a substrate, and making the substrate, in the presence of a glycosyl donor, react under the catalysis of UDP-glycosyltransferase-containing recombinant cell and/or UDP-glycosyltransferase prepared therefrom to generate Rebaudioside C.

Abstract: Provided is a method for preparing rebaudioside N using an enzymatic method, comprising using rebaudioside A or rebaudioside J as a substrate, and making the substrate, in the presence of a glycosyl donor, react under the catalysis of a UDP-glycosyl-transferase and/or a UDP-glycosyltransferase-containing recombinant cell to generate rebaudioside N.

Abstract: A light-emitting device includes a substrate and an epitaxial structure. The epitaxial structure includes a first semiconductor layer, an active layer, and a second semiconductor layer which are disposed on the upper surface of the substrate in such order. The substrate has a substrate edge region surrounding and exposed from the epitaxial structure. The substrate edge region includes a first substrate edge region and a second substrate edge region which is more proximate to the epitaxial structure than the first substrate edge region. The first substrate edge region has a first uneven toothed surface or an even flat surface. The second substrate edge regions are formed with second uneven toothed surfaces which have a height greater than a height of the first even toothed surface, or the even flat surface.

Abstract: A display substrate includes a plurality of sub-pixels. The display substrate further includes: a base substrate; a plurality of temperature sensors disposed on a first side of the base substrate; and a light-shielding layer disposed on a peripheral side, a side proximate to the base substrate, and a side away from the base substrate, of a temperature sensor in the temperature sensors. The temperature sensor is configured to detect a temperature of at least one of the plurality of sub-pixels. The light-shielding layer is configured to shield light emitted to the temperature sensor.

Abstract: Provided in the embodiment of the present disclosure is a method for monitoring a state of a blockchain consensus node, including that: an address list of all consensus nodes of a blockchain is acquired; the number of produced blocks and the number of times of voting of the consensus nodes in the produced blocks within a preset time period are recorded; a voting monitoring index of each consensus node is calculated, wherein the voting monitoring index includes at least one of a voting rate and a voting proportion; and in response to the voting monitoring index of the consensus node being lower than a preset alarm threshold, an abnormal state alarm in respect of the corresponding consensus node is issued.

Abstract: The present invention provides a keratin BD-3, a nucleic acid molecule encoding same, an expression vector, a host cell, a preparation method therefor, and a pharmaceutical composition contained the keratin BD-3. The keratin BD-3 can be used in the preparation of medicament for antipyretic, analgesic, antitussive, expectorant, anticonvulsant, antiepileptic, anti-hypertension, anti-inflammatory, and antiviral.

Abstract: Provided is a method for preparing Rebaudioside J using an enzymatic method, comprising using rebaudioside A as a substrate, and making the substrate, in the presence of a glycosyl donor, react under the catalysis of a UDP-glycosyltransferase-containing recombinant cell and/or UDP-glycosyltransferase prepared therefrom to generate Rebaudioside J.

Abstract: The present invention disclosure also relates to a pharmaceutical composition that ccomprises the compound as an active ingredient.

Abstract: A display panel includes a display layer, a photosensitive layer and an infrared mask. The display layer is configured to display an image, the display layer has light-transmitting portions, and the light-transmitting portions are configured to transmit infrared light. The photosensitive layer is disposed on a side of the display layer. The infrared mask is disposed on a side of the photosensitive layer proximate to the display layer, the infrared mask has hollowed-out regions, the hollowed-out regions are configured to make the infrared mask have a preset pattern, and a region in the infrared mask except the hollowed-out regions is configured to prevent transmission of the infrared light. The photosensitive layer is configured to receive infrared light passing though the hollowed-out regions and the light-transmitting portions, and convert the infrared light into an image signal.

Abstract: Disclosed are a foldable screen and a display device. The foldable screen includes: a flexible display panel and a plurality of elastic portions, wherein each of the elastic portions includes each of elastic support members and two connecting rods fixedly connected to each of the elastic support members; wherein the two connecting rods are respectively connected to two flat portions of the flexible display panel, and the elastic support members are configured to supply a support force to the foldable portion in the case that a display surface of the foldable portion of the flexible display panel is coplanar with those of the flat portions.

Abstract: A cleaning apparatus includes a device body; a bumper, connected to the device body and comprising a bumper opening, provided with a photography opening and an illuminator opening; a camera, oriented outside of the device body through the photography opening, configured to pick up an image of the environment to perform functions of object recognition; and an illuminator, oriented outside of the device body through the illuminator opening, configured to emit light to illuminate at least part of a recognition area of the camera.

Abstract: An automated coin cell battery manufacturing system can include a holding arrangement, an electrolyte dispensing component, a case providing component, a pick and place component, and a crimping component. The holding arrangement can hold multiple partially assembled coin cells that can each include electrode(s) and a spacer within a coin cell cap. The electrolyte dispensing component can automatically dispense electrolyte material into the partially assembled coin cells, and the electrolyte material can be different for different coin cells. The case providing component can store multiple coin cell cases and automatically provide the stored coin cell cases. The pick and place component can automatically pick the coin cell cases from the case providing component and can automatically place the coin cell cases on the multiple partially assembled coin cells to form fully assembled coin cells within the holding arrangement. The crimping component can automatically crimp the fully assembled coin cells.

Abstract: A biphenyl compound represented by formula (I), a preparation method therefor and an application thereof. The present invention also relates to a pharmaceutical composition that comprises the compound as an active ingredient. The compound is a novel small molecule immunomodulator having excellent oral absorption features and can be used for treating and/or preventing various immunity-related diseases.

Abstract: An intelligent cleaning device, comprising a device main body, a camera and a fill-in light, wherein the camera is mounted in the device main body and faces an outer side of the device main body; the fill-in light is mounted in the device main body by means of a fill-in light holder and faces the outer side of the device main body; and an irradiation direction of the fill-in light is the same as a photographic direction of the camera, so as to irradiate at least part of an identification region of the camera.

Abstract: A biphenyl compound represented by formula (I), a preparation method therefor and an application thereof. The present invention also relates to a pharmaceutical composition that comprises the compound as an active ingredient. The compound is a novel small molecule immunomodulator having excellent oral absorption features and can be used for treating and/or preventing various immunity-related diseases.

Abstract: A multi-rotor UAV control method, a multi-rotor UAV, a control apparatus, and a non-volatile computer-readable storage medium are provided. The multi-rotor UAV control method includes: obtaining a power status of each rotor of the UAV; and when it is determined, based on the power status, that the power of any one of the rotors of the UAV fails, controlling the UAV to enter a balance mode. In the balance mode, the UAV rotates at an angular velocity greater than a first threshold, and a displacement of the UAV in the horizontal direction is less than a preset displacement amount.

Abstract: The present invention provides a keratin BD-6, a nucleic acid molecule encoding keratin BD-6, an expression vector containing the nucleic acid molecule, and a host cell containing the expression vector or the nucleic acid molecule integrated into genome, and preparation method of the keratin BD-6, and a pharmaceutical composition containing the keratin BD-6, and use of the above keratin BD-6, nucleic acid molecule, expression vector, host cell or pharmaceutical composition in the preparation of medicament for antipyretic, analgesic, antitussive, expectorant, anticonvulsant, antiepileptic, anti-hypertension, anti-inflammatory, and antiviral.

Abstract: A free-standing polymer electrolyte for an electrochromic device includes a polymer network, a plasticizer and an electrolyte salt containing at least one of lithium or sodium ions. The free-standing polymer electrolyte may exclude tetraglyme.