Abstract: A wireless power receiver can include a wireless power transfer coil; a rectifier that receives an AC voltage induced in the wireless power transfer coil by a wireless power transmitter and generates a DC output voltage therefrom; load modulation circuitry; and control circuitry that operates the rectifier to power a load coupled thereto and operates the load modulation circuitry to communicate with the wireless power transmitter by selectively altering power drawn from the wireless power transfer coil in accordance with an amplitude shift keying modulation scheme having a plurality of modulation depths.

Abstract: Disclosed are emulsion gel with both a freshness indication and a low migration rate, and a preparation method therefor. Lipase and organic acid are used and subjected to hydrophobic modification of anthocyanins to obtain acylated anthocyanins, the acylated anthocyanins and oil-phase gel are then dissolved in vegetable oil to form an oil phase, while a sodium alginate aqueous solution is used as a water phase, the oil phase and the water phase are mixed and subjected to high-speed shearing, and calcium carbonate and glucono-?-lactone are finally added for high-speed shearing to form emulsion gel. The emulsion gel prepared in the present disclosure has both a freshness indication and a low migration rate, and the preparation method of the present disclosure is simple, green, pollution-free and low energy consumption.

Abstract: A memory device includes a memory block including memory strings, bit lines coupled to the memory strings, dummy word lines coupled to the dummy cells, first select lines coupled to the first select transistors, and a peripheral circuit coupled to the bit lines, the dummy word lines, and the first select lines. Each of the memory strings includes memory cells, first select transistors, and dummy cells. The peripheral circuit is configured to apply a turn on voltage on the first select lines, and apply a program voltage on a first dummy word line of the dummy word lines to program all dummy cells coupled to the first dummy word line.

Abstract: A retractable built-in interdental brush includes a built-in interdental brush, a retractable mechanism, and a handle. The built-in interdental brush is connected to the retractable mechanism. By driving the retractable mechanism, the built-in interdental brush can be driven to extend from the handle to clean a gap between teeth. After use, the built-in interdental brush retracts into an accommodation space of the handle through the retractable mechanism, so that the handle can form a compact instrument box, which is very convenient to carry. An end surface of a delivery device of the built-in interdental brush is an inclined surface and is at an angle ? to an axial direction of the retractable built-in interdental brush is, where the angle ? is less than 90°.

Abstract: A diffraction optical waveguide structure is provided. The diffraction optical waveguide structure includes a light-guiding layer, a coupling-in region, a deflecting region and a coupling-out region, all disposed on the light-guiding layer, and are sequentially arranged along a direction of an optical path. The coupling-in region, the deflecting region and the coupling-out region are all configured with a first diffractive microstructure layer. Additionally, the diffraction optical waveguide structure further includes a light-homogenizing region, the light-homogenizing region is arranged between the deflecting region and the coupling-out region, the light-homogenizing region is configured with a second diffractive microstructure layer, the second diffractive microstructure layer is configured to spatially redistribute energy of lights.

Abstract: A retractable interdental brush includes an interdental brush, a retractable mechanism, and a handle. The retractable mechanism is configured to drive the interdental brush to extend from the handle to clean a gap between teeth. After use, the interdental brush is retracted into an accommodation space of the handle through the retractable mechanism. The interdental brush may be a built-in interdental brush. When the built-in interdental brush is used for cleaning, a brush body may be first retracted into an elbow at a front end of a delivery device, an outlet of the elbow is pressed against the gap between teeth to push the brush body, and a working portion of the brush body and enters into the gap between teeth to clean the gap between teeth, thereby resolving a problem with existing interdental brush that easily stabs gingival tissue due to a difficulty of alignment with the gap between teeth.

Abstract: An adjustable ear shaping mechanism of the present application includes a base, an ear back support, and an upper cover. An opening is provided on the base, and the opening can allow an ear to pass therethrough. The ear back support is movably disposed in the opening, and supports an auricle from the back of the ear according to a part needing orthopedics. The upper cover is detachably connected to the base. An object-containing space is formed between the upper cover, the base, and the ear back support, and the ear is placed in the object-containing space. In a clinical use process, the ear back support may be disposed at a corresponding malformed part behind the ear according to a malformed part of the ear, the auricle is supported from the back of the ear, orthopedic requirements of different parts can be met, and clinical use is very convenient.

Abstract: A method and system for strategically solving an innovative design problem are provided. A target analysis tool is determined according to a to-be-solved problem. An initial model is generated based on the target analysis tool. A target model is determined according to an interaction relationship among elements in the initial model and the target analysis tool. A problem characterization result of the target model is generated according to a preset interaction relationship. Retrieval information is generated according to the problem characterization result, based on which the retrieval is performed in a preset database to obtain target data. Different analysis tools can be used to analyze different to-be-solved problems. The retrieval is performed based on the problem characterization result to obtain the solution to the to-be-solved problem.

Abstract: A memory device includes a memory cell array including memory blocks and a peripheral circuit coupled to the memory cell array. Each memory block includes memory strings each including dummy cells and select transistors, bit lines coupled to the memory strings, select lines including first select lines and second select lines, and one or more dummy word lines. Each select line coupled to the select transistors. The first select lines are closer to the bit lines than the second select lines. Each dummy word line is coupled to the respective dummy cells. The dummy word lines include a first dummy word line adjacent to either the first select lines or the second select lines. The peripheral circuit is configured to apply a turn-on voltage to all the first select lines, and apply a program voltage to the first dummy word line.

Abstract: An optical waveguide device includes a light source structure, and an optical waveguide structure having at least one coupling-in structures and at least one coupling-out structures. An initial light beam can be coupled into the optical waveguide structure from the coupling-in structure and coupled-out multiple light beams from the coupling-out structure. A distance between a polygonal vertex of a coupling-out light beam and a polygonal adjacent edge of an adjacent coupling-out light beam is not greater than a preset threshold. When the initial light beam exit pupil expands, a distance between the polygonal vertex of the coupling-out light beam and the adjacent edge of the adjacent coupling-out light beam is less than the preset threshold, therefore, less overlap and gaps are formed by the polygonal coupling-out light beam, and the energy distribution uniformity is improved.

Abstract: An optical combiner and a display device are provided. The optical combiner includes a light-transmitting structure and a waveguide structure in the light-transmitting structure. The waveguide structure includes a first dielectric layer, a waveguide plate, and a second dielectric layer arranged in sequence. The waveguide plate includes a coupling-out region, wherein the refractive index of the first dielectric layer and the refractive index of the second dielectric layer are both less than the refractive index of the waveguide plate. Since the refractive index of the first dielectric layer and the refractive index of the second dielectric layer are both less than the refractive index of the waveguide plate, light beams propagating in the waveguide plate undergo totally reflection during propagation and cannot be refracted into the first dielectric layer and the second dielectric layer.

Abstract: The disclosure provides a modified cyclodextrin/mesoporous silica for adsorbing Pb and Cd and application thereof, belonging to the technical field of adsorbent materials. By using surface modification, chloroacetic acid is used as anions, and a modified cyclodextrin is grafted onto a surface of a cyclodextrin/mesoporous silica by nucleophilic substitution to prepare the modified cyclodextrin/mesoporous silica adsorbent material. The modified cyclodextrin/mesoporous silica adsorbent material prepared in the disclosure has the advantages of simple preparation method, strong adsorbability, easy separation, good biocompatibility and the like. When the material is used as an adsorbent to adsorb heavy metal ions Pb2+ and Cd2+, maximum removal rates can reach 97.8% and 81.29% respectively. Therefore, the material has wide application prospects in removal of heavy metals in sewage and the like, thereby improving the water environment that people depend on for survival.

Abstract: A method and system for strategically solving an innovative design problem are provided. A target analysis tool is determined according to a to-be-solved problem. An initial model is generated based on the target analysis tool. A target model is determined according to an interaction relationship among elements in the initial model and the target analysis tool. A problem characterization result of the target model is generated according to a preset interaction relationship. Retrieval information is generated according to the problem characterization result, based on which the retrieval is performed in a preset database to obtain target data. Different analysis tools can be used to analyze different to-be-solved problems. The retrieval is performed based on the problem characterization result to obtain the solution to the to-be-solved problem.

Abstract: A medical optical tracking system includes a light source and an optical tracking carrier. Light emitted by the light source is conducted through the optical tracking carrier, and optical tracking is performed on the optical tracking carrier. Light-emitting ends of a micro LED light source and the optical tracking carrier may be directly integrated and placed in vivo to perform optical tracking. The system may be manufactured as a visible-light tracking medical catheter, or a visible-light tracking solid tumor tracking apparatus, or a visible-light tracking optical fiber, or a visible-light tracking blood vessel tracking apparatus as required, and is configured to track a blood vessel, an esophagus, a ureter, a urethra, or another cavity or tube, or track and calibrate the position of a solid tumor such as a uterine fibroid, a lung tumor, a liver tumor, or the like in clinical surgery, to improve the precision of surgery.

Abstract: Various embodiments of the teachings herein include a device deployment method for an AI model. An example method includes: receiving a current behavior tree constructed and configured by a user based on preset nodes for constructing various behavior trees, the nodes comprising a start node, a control node, and an action node; performing a workflow corresponding to the current behavior tree; constructing a predetermined current AI model as an AI application; and deploying the AI application to a target device specified by the user. A behavior tree is used for representing a workflow. The control node is used for implementing logic control in the workflow. The action node is used for implementing a service operation in the workflow. The action node comprises a reusable independent action node formed by encapsulating the related service operation in an AI model deployment process.

Abstract: Disclosed are an agarase mutant with improved thermal stability and application thereof, belonging to the fields of genetic engineering technology and enzyme engineering. The present disclosure provides an agarase mutant, which is obtained by mutating the amino acid at the 86th site, the 373rd site, the 374th site, the 496th site, the 507th site, or the 747th site of agarase with an amino acid sequence as shown in SEQ ID NO. 1. The agarase mutant provided by the present disclosure improves the thermal stability and the hydrolytic activity of the agarase. Compared with the wild type enzyme, the mutant enzyme shows excellent heat resistance and can be industrially used at a relatively high temperature, so that the utilization rate of agar raw materials and the yield of oligosaccharides from agar are improved, and the mutant enzyme has a good industrial application prospect.

Abstract: A method for preparing V-type porous starch includes: mixing starch and a first ethanol solution in a reaction kettle, adding concentrated hydrochloric acid to the reaction kettle for acidity regulation, and controlling a temperature of a reaction system in the reaction kettle at 80-150° C.; cooling the reaction kettle, and adding a sodium hydroxide solution to the reaction system in the reaction kettle, until a pH of a mixture in the reaction kettle is neutral, to yield a starch solution; and centrifuging the starch solution, washing a collected precipitate with a second ethanol solution, leaching, drying, cooling, and pulverizing, to yield V-type porous starch.

Abstract: Luminous dental floss of the present application includes dental floss, an illumination system, and a handle. The dental floss is detachably connected to the handle. The illumination system includes a light source system, a circuit system, a switch, and a power supply system. The light source system is connected to the power supply system through the circuit system. The circuit system and the power supply system are mounted in the handle, and the switch is mounted on the handle. Illumination light emitted by the light source system can illuminate an oral cavity, and especially an observation window is designed on the luminous dental floss of the present application. During use, under the illumination of the illumination system, a process of the dental floss entering a gap between teeth can be directly observed, thereby facilitating cleaning and effectively avoiding accidental injury to gingivae.

Abstract: A light-emitting diode (LED) control system is provided, including: a controller (10) and an LED light string (20) electrically connected to the controller (10). The controller (10) includes a first data output port (VA) and a second data output port (VB), and is configured to send a first data signal via the first data output port (VA) and send a second data signal via the second data output port (VB); the first data signal and the second data signal have opposite phases; and the LED light string (20) is capable of receiving the first data signal and the second data signal via a data receiving port, implementing display control of LEDs according to the first data signal and the second data signal. The LED control system is simple in implementation, low in cost, and high in reliability.

Abstract: The present disclosure relates to a multifunctional visual oral cleaning instrument that includes multiple functions of: a visual dental floss, and/or visual oral forceps, and/or a visual oral irrigator, and/or a visual toothbrush, and/or a detachable visual interdental brush. The dental floss, and/or oral forceps, and/or oral irrigator, and/or toothbrush, and/or interdental brush are/is connected with an oral viewer through a connecting mechanism. In one aspect, a visual oral irrigator includes an oral irrigator, an oral viewer, and a connecting mechanism. The oral irrigator is mounted on the oral viewer through the connecting mechanism. The oral viewer further includes a housing, a power supply system, a lighting system, a viewing system, a circuit system, and a switch.