Abstract: The present disclosure relates to a transformer with a modular design, the transformer comprising: a front-end assembly comprising an input electrode for receiving an input voltage; a back-end assembly comprising an output electrode, for outputting an output voltage converted by the transformer; and a magnetic core, the magnetic core being configured to assemble the front-end assembly and the back-end assembly together. The back-end assembly comprises one or more conversion modules, each conversion module being capable of independently converting the input voltage into the output voltage in collaboration with the magnetic core, and the power of the transformer is the sum of the power of all the conversion modules. The present disclosure further relates to a direct current-to-direct current converter comprising such a transformer, a vehicle comprising such a direct current-to-direct current converter, and a method for assembling such a transformer.

Abstract: A processing method that is performed by one or more processor is provided. The processing method includes determining a target video frame in a currently captured video; determining an object area in the target video frame based on a box selection model; determining a category of a target object in the object area based on a classification model used to classify an object in the object area; obtaining augmented reality scene information associated with the category of the target object; and performing augmented reality processing on the object area in the target video frame and the augmented reality scene information, to obtain the augmented reality scene.

Abstract: A power factor correction circuit includes an inductor configured to receive an input voltage and supply an output voltage; a power switch connected to the inductor and configured to control an input current flowing through the inductor; and a switch controller configured to receive a feedback voltage including information on the output voltage and an auxiliary voltage including information on a voltage of the inductor and control an on/off operation of the power switch. The switch controller is further configured to operate in a first mode when the feedback voltage is less than a reference voltage, and operate in a second mode when the feedback voltage is greater than the reference voltage.

Abstract: The invention relates to a tea-based beverage comprising probiotics, wherein the probiotics has a live probiotic cell count of ?6.0 log CFU/ml. The invention further relates to a method of preparing the tea-based beverage having a live probiotic cell count of ?6.0 log CFU/ml comprising the steps of: mixing tea infusion with sugar to form a mixture, inoculating probiotics to the mixture to form an inoculated mixture, fermenting the inoculated mixture for a pre-determined period of time to form the beverage. In one embodiment, the probiotics comprises Lactobacillus plantarum, Lactobacillus acidophilus, Lactobacillus gasseri, Lactobacillus ermentum, Lactobacillus rhamnosus, Lactobacillus paracasei, Saccharomyces boulardii, Saccharomyces cerevisiae, or a combination thereof.

Abstract: A system for identifying objects in images is provided. The system may include an optical front end and a digital back end. The optical front end includes a metalens that duplicates a received image into multiple images, and a metasurface that receives the duplicate images and outputs a feature map based on the received images. The feature map may be equivalent to the computationally expensive convolution operations previously performed by a neural network. The feature map is provided to the digital back end, which uses a neural network to classify the object. Because the feature map included the convolution operations, the digital back end can classify the object more quickly and using fewer computing resources than previous systems.

Abstract: A method for processing a sample of a cell culture composition includes diluting the sample followed by filtering the diluted sample, wherein the dilution may be at least 10 parts by volume of a diluent to one part sample, and the filter may be a porous membrane with a molecular weight cutoff of less than 20,000 Daltons. The dilution may be carried out at a multiple-port dilution valve having a first condition and a second condition. The sample may be mixed with the diluent at a predetermined dilution ratio when the dilution valve is in the second condition.

Abstract: A prepared method of arginine chelated selenium foliar fertilizer which is benefit for improving herbage seed yield is provided. The prepared foliar fertilizer is conducive to significantly promote the yields of herbage and seeds. The weight and diameter of the seeds and the contents of fat, polysaccharide, isoflavone and selenium contained in the herbage seeds have increased obviously. Seed is the chip of agriculture. High yield and quality of herbage seeds provide a good basis for forage production, which not only develops livestock industry, but also plays an important role in protecting ecological environment.

Abstract: A prepared method of arginine chelated selenium foliar fertilizer which is benefit for improving herbage seed yield is provided. The prepared foliar fertilizer is conducive to significantly promote the yields of herbage and seeds. The weight and diameter of the seeds and the contents of fat, polysaccharide, isoflavone and selenium contained in the herbage seeds have increased obviously. Seed is the chip of agriculture. High yield and quality of herbage seeds provide a good basis for forage production, which not only develops livestock industry, but also plays an important role in protecting ecological environment.

Abstract: The present disclosure provides a radio frequency tagging optical spectrometer, comprising: a dynamic dispersion device, the dynamic dispersion device receiving a beam comprising more than two wavelength components and being driven by driving radio frequency signals, and the dynamic dispersion device encoding the intensity of each wavelength component into the amplitude of a different beat radio frequency signal based on different driving radio frequency signals, wherein the beat frequency of the different beat radio frequency signal is equal to the frequency of the corresponding driving radio frequency signal; a single-channel photodetector for detecting the sum of beat radio frequency signals formed by adding all the beat radio frequency signals; and a processing unit for performing Fourier transform on the sum of the beat radio frequency signals to obtain a spectrum or an associated radio frequency spectrum by which the optical spectrum is obtained.

Abstract: A board connector includes a first housing including a base and two sidewalls, plural first terminals retained in the base and located between the two sidewalls, and a first metallic shell enclosing the first housing and including a pair of first engaging portions at the sidewalls and a pair of first locking portions located in front of the sidewalls. A cable connector includes a second insulating housing and defining two opposite sides, plural second terminals retained in the second housing, and a second metallic shell enclosing the second housing and including a pair of second locking portions and a pair of second engaging portions behind the second locking portions. The first locking portions are locked with the second engaging portion, and the second locking portion are locked with the first engaging portions after the board connector and the cable connector is mated with each other.

Abstract: A display panel and a display apparatus, including: a first display area and a second display area at least partially surrounding the first display area, the second display area includes: a light-emitting element layer including a plurality of sub-pixels disposed in an array; and a pixel circuit layer being arranged with a plurality of pixel circuits and including a plurality of intermediate film layers, the plurality of intermediate film layers are arranged in a stacked manner and insulated from each other, each of the intermediate film layers includes a plurality of modules disposed to be insulated from each other.

Abstract: The invention relates to a coffee-based beverage comprising probiotics, wherein the probiotics has a live probiotic cell count of >6.0 log CFU/mL. The invention further relates to a method of preparing the coffee-based beverage with a live probiotic cell count of >6.0 log CFU/mL, comprising the steps of: mixing coffee brew with sugar and an inactivated yeast to form a mixture, adding probiotics to the mixture to form an inoculated mixture, and fermenting the inoculated mixture for a pre-determined period of time to form the beverage. The probiotics may comprise Lactobacillus rhamnosus, Lactobacillus paracasei, Lactobacillus plantarum, Lactobacillus acidophilus, Lactobacillus gasseri, Lactobacillus fermentum, Bifidobacterium lactis, Saccharomyces boulardii, Saccharomyces cerevisiae, or a combination thereof.

Abstract: A method of manufacturing a display substrate which includes a central display area and an arc-shaped stretch area located at a corner of the central display area, wherein the method includes: preparing a substrate to be etched, which includes a flexible substrate, a stack structure disposed on the flexible substrate, and a last-dry-etched metal layer disposed on a side of the stack structure away from the flexible substrate, the stack structure including an active layer, at least one conductive layer, and a plurality of insulating layers, wherein the last-dry-etched metal layer is a last metal layer that is formed through dry etching; and forming a stretch groove by patterning the substrate to be etched, wherein the stretch groove is disposed in the stretch area and passes through the stack structure and a part of the flexible substrate. A display substrate, a display panel and a display device are further provided.

Abstract: Photovoltaic (PV) cell structures are disclosed. In one example embodiment, a PV cell includes an emitter layer, a base layer adjacent to the emitter layer, and a back surface field (BSF) layer adjacent to the base layer. The BSF layer includes a first layer, and a second layer adjacent to the first layer. The first layer includes a first material and the second layer includes a second material different than the first material.

Abstract: A membrane-based fluid degassing system is arranged for automated control to a degassing efficiency set point, so that fluid is degassed only as necessary. The control variable may be assigned as the degassing environment, to provide the gas transfer driving force suitable to appropriately degas the fluid. By avoiding unnecessary degassing of the fluid, mobile phase pervaporation through the membrane is minimized.

Abstract: Valve with two-piece stator assembly for use with liquid chromatography or other analytical systems. A separate and removable stator plate is provided with a mounting device to provide a two-piece stator assembly. The mounting device is adapted on one side to engage and contact the stator plate, and on the other side includes a plurality of ports for fluidic connections which are in fluid communication with fluid passageways in the stator plate.

Abstract: The present invention discloses a natural food antioxidant and a method for preparing the same, and belongs to the field of food industry technology. The food antioxidant includes main components of a red clover extract, whose main components are isoflavones, polysaccharides and the mixtures of isoflavones and polysaccharides. Different ingredients have different characteristics in activities, water solubilities and production cost accounting. Combining factors such as activity, solubility and cost, a compounding solution of different ingredients can be used. Especially, the best synergic effect and the highest activity are shown in the mixture of polysaccharides and isoflavones with mass ratio of 1:2. As a leguminous forage, red clover is widely distributed all over the world and has abundant sources. The isoflavones of red clover are usually used as health function.

Abstract: Embodiments are directed to an optical spectrometry method, comprising: generating a sequence of 2D Hadamard masks along the time dimension, wherein each 2D Hadamard mask is arranged with a wavelength dimension and a coefficient dimension; detecting an optical signal from light transmitted through the sequence of 2D Hadamard masks; and reconstructing a spectrum to be detected by analyzing the optical signal, wherein each 2D Hadamard mask in the sequence of 2D Hadamard masks comprises a plurality of columns along the wavelength dimension, each column corresponding to a different Hadamard coefficient, and having different respective sequency values along the time dimension.

Abstract: A processing method that is performed by one or more processor is provided. The processing method includes determining a target video frame in a currently captured video; determining an object area in the target video frame based on a box selection model; determining a category of a target object in the object area based on a classification model used to classify an object in the object area; obtaining augmented reality scene information associated with the category of the target object; and performing augmented reality processing on the object area in the target video frame and the augmented reality scene information, to obtain the augmented reality scene.

Abstract: Embodiments are directed to diagnostic devices based on surface-enhanced Raman scattering comprising: an inlet module receiving liquid to be analyzed; a reaction module having a first region arranged with a receiving hole and a second region arranged with an output hole, wherein the receiving hole is communicated with the output hole through a flow channel configured with at least one chemical set, the reaction module receives the liquid delivered by the inlet module via the receiving hole, and the liquid to be analyzed flows through the chemical sets placed in the flow channel to obtain nanoparticles-carrying liquid, and the nanoparticles-carrying liquid configured to flow into the second region of the reaction module; and a detection module receiving the nanoparticle-carrying liquid from the output hole of the reaction module.