Abstract: Provided are a fibroblast activation protein inhibitor (FAPI) dimer compound, an FAPI dimer-based positron emission tomography (PET) imaging agent for tumor diagnosis, and a preparation method and use thereof. An amphiphilic polyethylene glycol (PEG) chain and a dimerized structure of FAPI in the FAPI dimer compound with a structure shown in formula I can improve the in vivo kinetic properties of the compound and prolong a residence time of the compound in a tumor, thereby improving the uptake and imaging effects in the tumor. The accurate tumor diagnosis can be achieved by labeling the FAPI dimer compound with a diagnostic nuclide (68Ga), which has promising application prospects in PET imaging for diagnosis and in the preparation of a therapeutic nuclide (such as 177Lu or 90Y)-labeled drug for treating a FAP-?-expressing tumor.

Abstract: Various powered personal mobility vehicles are disclosed. In some embodiments, the vehicle can include a deck having a forward portion, a rearward portion, and a neck portion. A front swivel wheel assembly and a rear swivel wheel assembly can be connected with the deck. In some embodiments, the front swivel wheel assembly comprises a motor.

Abstract: A controlled-release fertilizer including an inside core of water-soluble fertilizer particle and an outer layer coating material, wherein the coating material is a bentonite modified or sodium bentonite modified waterborne polymer; and a preparation method including: weighing the fertilizer core particle and the modified waterborne polymer emulsion according to the amount, preparing a semi-processed coating controlled-release fertilizer by using a coating machine, and placing the semi-processed coating controlled-release fertilizer in an oven for postprocessing to improve the compactness of the film material.

Abstract: A light emitting keyboard includes a frame having a translucent frame body, a plurality of key modules each having a keycap, and a backlight module including a light source circuit board, a first light guide plate disposed on top of the light source circuit board, a second light guide plate disposed under the light source circuit board, a plurality of first light-emitting members extending upwardly through the first light guide plate, a plurality of second light-emitting members extending downwardly through the second light guide plate, and a reflector plate disposed under the second light guide plate. Light emitted from the first light-emitting members is transmitted in the first light guide plate and projects upwardly onto the keycaps. Light emitted from the second light-emitting members is transmitted in the second light guide plate is reflected by the reflector plate, and projects onto the frame body.

Abstract: A device includes a substrate, a pull-down transistor over the substrate, a pass-gate transistor over the substrate, and a pull-up transistor over the substrate. The pull-up transistor includes a first gate structure and first source/drain epitaxy structures on opposite sides of the first gate structure, in which each of the first source/drain epitaxy structures comprises a first epitaxy layer and a second epitaxy layer over the first epitaxy layer, wherein a germanium concentration of the first epitaxy layer is higher than a germanium concentration of the second epitaxy layer.

Abstract: A well cementing method is described for improving cementing quality by controlling the hydration heat of cement slurry. By controlling the degree and/or rate of hydration heat release from cement slurry, the method improves the hydration heat release during formation of cement with curing of cement slurry, improves the binding quality between the cement and the interfaces, and in turn improves the cementing quality at the open hole section and/or the overlap section. The cementing method improves cementing quality of oil and gas wells and reduces the risk of annular pressure.

Abstract: Disclosed are a central chirality induced spiro chiral tetradentate cyclometalated platinum (II) and palladium (II) complex-based circularly polarized luminescence material and an application thereof. Spiro chiral metal complex molecules can be autonomously induced by a whole tetradentate ligand to coordinate with metal ions in a less sterically hindered manner by means of a central chiral fragment La in the tetradentate ligand, to form an optically pure spiro chiral metal complex-based circularly polarized luminescence material, without need for chiral resolution. Moreover, the material has high chemical stability and thermal stability, and has important applications in circularly polarized luminescence devices.

Abstract: A two-step door opening mechanism for an oven is provided. A mechanical button and an electronic button are provided, the oven defining an oven cavity openable and closable by an oven door. A controller is provided. A digital valve, comprising a shaft configured to slide laterally between a first, unlocked position in which the shaft allows inward movement of the mechanical button and a second, locked position in which the shaft blocks the inward movement of the mechanical button. The electronic button, once actuated, is operable to cause the controller to direct the digital valve to move the shaft from the second, locked position into the first, unlocked position to unlock the mechanical button, and the mechanical button, once actuated, is operable to open the door when the shaft is in the first, unlocked position.

Abstract: A federated learning participant selection method and apparatus, and a device and a storage medium are disclosed. The method may include acquiring a plurality of participants to be selected; determining a data quality factor, a service factor and a stability factor of each participant to be selected respectively; and determining a selected participant based on the data quality factor, service factor and stability factor of the plurality of participants to be selected.

Abstract: A two-step door opening mechanism for an oven is provided. The mechanism includes first and second buttons, arranged side-by-side on a front panel of the oven, the oven defining an oven cavity openable and closable by an oven door, the first and second buttons being separately actuatable one after the other for providing two distinct actions to be performed to open the oven door. The first button, once actuated, is operable to unlock the second button, and the second button, once actuated, is operable to open the door when the second button is unlocked.

Abstract: A gesture recognition method is provided, including: obtaining a sub-image of a hand region in a target image, and determining multiple pieces of feature point position information corresponding to multiple feature points in the sub-image of the hand region; determining a first position feature vector based on the multiple pieces of feature point position information, where the first position feature vector represents a relative position relationship of any one of the multiple feature points relative to remaining feature points in the multiple feature points; determining a second position feature vector based on the multiple pieces of feature point position information, where the second position feature vector represents an absolute position relationship of the multiple feature points in the sub-image of the hand region; and outputting a recognition result of the sub-image of the hand region based on the first position feature vector and the second position feature vector.

Abstract: A heating appliance includes a housing having interior walls with interior surfaces defining a cooking chamber for heating food, a microwave heating source configured to generate microwave radiation for heating the food, and a hybrid easy-to-clean coating on at least a portion of the interior surfaces, the hybrid easy-to-clean coating including a microwave absorbing component and a super hydrophobic component.

Abstract: Provided is an electronic apparatus (100). The electronic apparatus (100) includes a housing assembly (10), a flexible screen module (20), and an electroacoustic device (40). The housing assembly (10) includes a first housing (12) and a second housing (14) movably disposed on the first housing (12). The flexible screen module (20) is disposed on the housing assembly. The electroacoustic device (40) is disposed in the housing assembly (10) and has a sound cavity (41a) defined therein. During a movement of the second housing (14) relative to the first housing (12), at least part of the flexible screen module (20) moves into or out of the housing assembly (10) and a volume of the sound cavity (41a) is variable.

Abstract: An image processing method and apparatus are provided. The image processing method includes obtaining a reference makeup image by using a preset method, where the preset method includes at least one of recognizing a target image or scanning a target QR code; obtaining a user image; and obtaining and displaying a target makeup image based on the reference makeup image and the user image, where the target makeup image is an image obtained by transferring a makeup in a first target face image in the reference makeup image to a second target face image in the user image.

Abstract: A device includes a substrate, a pull-down transistor over the substrate, a pass-gate transistor over the substrate, and a pull-up transistor over the substrate. The pull-up transistor includes a first gate structure and first source/drain epitaxy structures on opposite sides of the first gate structure, in which each of the first source/drain epitaxy structures comprises a first epitaxy layer and a second epitaxy layer over the first epitaxy layer, wherein a germanium concentration of the first epitaxy layer is higher than a germanium concentration of the second epitaxy layer.

Abstract: A method includes providing a semiconductor structure having an active region and an isolation structure adjacent to the active region, the active region having source and drain regions sandwiching a channel region for a transistor, the semiconductor structure further having a gate structure over the channel region. The method further includes etching a trench in one of the source and drain regions, wherein the trench exposes a portion of a sidewall of the isolation structure, epitaxially growing a first semiconductor layer in the trench, epitaxially growing a second semiconductor layer over the first semiconductor layer, changing a crystalline facet orientation of a portion of a top surface of the second semiconductor layer by an etching process, and epitaxially growing a third semiconductor layer over the second semiconductor layer after the changing of the crystalline facet orientation.

Abstract: A method includes forming a first semiconductor fin over a p-well region of a substrate; forming a second semiconductor fin over an n-well region of a substrate; forming a gate structure crossing the first semiconductor fin and the second semiconductor fin; performing an implantation process to form a source/drain doped region in the first semiconductor fin; etching the second semiconductor fin to form a recess therein; performing a first epitaxy process to grow a first epitaxy layer in the recess; performing a second epitaxy process to grow a second epitaxy layer over the first epitaxy process; etching the second epitaxy layer to round a corner of the second epitaxy layer; forming an interlayer dielectric (ILD) layer covering the first semiconductor fin and the second epitaxy layer, wherein no etching is performed to the first semiconductor fin after forming the gate structure and prior to forming the ILD layer.

Abstract: An encrypted communication method is applied in a first electronic device, which includes a first processor communicating through encrypted channel of first Bluetooth, and a second processor communicating through unencrypted channel of second Bluetooth. The method includes: receiving, by the first processor, a key transmitted from a second electronic device, and transmitting the key to the second processor, the key being transmitted from the second electronic device to the first processor through the encrypted channel of the first Bluetooth; receiving, by the second processor in response to the first electronic device being switched to a system run by the second processor, a first ciphertext transmitted from the second electronic device, the first ciphertext being transmitted from the second electronic device to the second processor through the unencrypted channel of the second Bluetooth; and decrypting, by the second processor, the first ciphertext with the key to obtain the first plaintext.

Abstract: A microwave-heating crisp plate includes a body defining a food-supporting surface and an outer surface opposite the food-supporting surface, and a coating applied over at least a portion of the outer surface. The coating includes a base polymer material defining a matrix, carbon nanotubes, and ferrite particles. The carbon nanotubes and the ferrite particles are dispersed throughout the matrix in a predetermined relative ratio and in a predetermined dispersal ratio with respect to the matrix.

Abstract: A supercapacity lithium ion battery cathode material, a preparation method therefor and an application thereof. The supercapacity lithium ion battery cathode material consists of a transition metal-containing lithium ion cathode material and carbon which is coated on the surface of the lithium ion cathode material. The transition metal on the surface of the lithium ion cathode material is coordinated with carbon by means of X—C bonds to form transition metal-X—C chemical bonds, such that carbon stably coats the surface of the cathode material, wherein C is SP3 hybridization and/or SP2 hybridization, and X is at least one selected from among N, O and S.