Abstract: A flyback DC-DC converter. The converter having a transformer with a primary and a secondary windings, first and second switches, a capacitor coupled between the second switch and the primary winding, where the second switch is arranged to operate such that a sum of a first and second time periods equals a sum of third and fourth time periods, where the first time period is a delay time period from a time that the first switch is turned off to a time that the second switch is turned on, the second time period is a time period that the second switch is on, the third time period is a resonance time period of a resonator formed by a leakage inductance of the transformer and a capacitance of the capacitor, and the fourth time period is a time period for discharge of the leakage inductance of the transformer into the capacitor.

Abstract: The present application discloses a lithium nickel manganate positive electrode material, a preparation method therefor and an application thereof. The lithium nickel manganate positive electrode material has a molecular formula of Li?Ni?Mn2-?M?O4-?/N, where 0.95???1.1, 0.4???0.6, 0.0005???0.02, 0???0.2, M is a single-crystal dispersing element, and M is at least one of V, Nb, Ta, Mo or W; N represents a coating layer, and the coating layer includes a P compound and/or an Al compound, and a coating amount of N is 500-10000 ppm. By means of adding a small amount of a single-crystal dispersing element (V, Nb, Ta, Mo or W), a high-voltage nickel manganese material having good dispersity of single crystals is prepared. By means of uniformly coating the P compound and/or the Al compound to the lithium nickel manganate positive electrode material, the direct contact between the positive electrode material and an electrolyte, is avoided.

Abstract: A panel structure for a hidden water tank includes: a panel mounting frame configured to be connected to a water tank body; a panel body disposed on an outer side of the panel mounting frame and configured to be opened and closed relative to the panel mounting frame; and a hinge configured to connect a first end of the panel body to the panel mounting frame. A second end of the panel body is connected to the panel mounting frame.

Abstract: The present invention discloses a flooding water level monitoring method and system for power facilities, including after receiving a flooding emergency response notification and a heavy rainfall defense alarm, starting facility flooding water level monitoring; and based on the individual area and total area of facilities affected by flooding and water level sensing monitoring information, establishing a neural network measuring an affected range, and outputting the monitoring result of a flooded surface height in a region, thereby achieving all-weather real-time monitoring, and accurately measuring and timely reporting a flooding height.

Abstract: A method for fabricating semiconductor device includes the steps of first providing a substrate having a first region and a second region, forming a first bottom barrier metal (BBM) layer on the first region and the second region, forming a first work function metal (WFM) layer on the first BBM layer on the first region and the second region, and then forming a diffusion barrier layer on the first WFM layer.

Abstract: An NMOS structure includes a semiconductor substrate, a dielectric structure, a source doped region, a drain doped region, a channel region, a gate structure and two isolation P-type wells. The dielectric structure is formed in the semiconductor substrate to define an active region, in which the source/drain doped region and the channel region are formed. The channel region includes two opposite first sides and two opposite second sides. The source/drain doped region is respectively formed between the two second sides and the dielectric structure. The gate structure is formed on the semiconductor substrate. The gate structure covers a part of the dielectric structure beside the first sides. The two isolation P-type wells are formed in a part of the dielectric structure not covered by the gate structure. The isolation P-type wells respectively surround a periphery of the source/drain doped region and end at the respective second side.

Abstract: The present disclosure provides a display substrate, a method for manufacturing the same, and a display device. The display substrate includes a drive circuit layer disposed on a base substrate and a light emitting structure layer disposed on a side of the drive circuit layer away from the base substrate. The light emitting structure layer includes an anode, an organic light emitting layer, a cathode, and an auxiliary electrode. The organic light emitting layer is respectively connected to the anode and the cathode, and the cathode is connected to the auxiliary electrode; in a plane parallel to the display substrate, an edge of the auxiliary electrode is provided with a structure depressed towards a center of the auxiliary electrode.

Abstract: An optical imaging system (1) is configured for photographing a sample and includes a lighting module (11) and an imaging module (15). The lighting module (11) is configured for outputting excitation light, the excitation light is configured to excite the sample to generate excited light, the imaging module (15) comprises a time delay integration line scan camera (151), the time delay integration line scan camera (151) is configured to record the excited light. A biochemical substance detection system using the optical imaging system (1) is also provided, improving the detection flux.

Abstract: A filling material and method for reducing the amount of filling material required for filling a soft casing to a pre-selected specification, the filling material comprising a blend of polyester fibers having two or more different deniers and providing at least a 6% reduction in the amount of filling material required as compared to an alternative fill material consisting solely of polyester fibers of a single denier wherein the soft casing filled with the filling material meets pre-selected specifications comprising a pre-selected height measurement for the filled soft casing and is substantially the same in appearance as a soft casing filled with the alternative fill material consisting solely of polyester fibers of a single denier.

Abstract: The present disclosure provides a detecting apparatus, system, and method, and belongs to the technical field of detection. The detecting apparatus includes a beam splitting device, a first dichroic mirror, an objective lens, a fluorescence guiding device, and an imaging system including a plurality of imaging devices.

Abstract: The invention provides a porous polyurethane polishing pad that includes a porous matrix. The matrix has large pores that extend upward from a base surface and open to an upper surface. The large pores are interconnected with tertiary pores, a portion of the large pores is open to a top polishing surface and at least a portion of the large pores extend to the top polishing surface. Spring-arm sections connect lower and upper sections of the large pores. The spring-arm sections all are in a same horizontal direction as measured from the vertical orientation and they combine for increasing compressibility of the polishing pad and contact area of the top polishing surface during polishing.

Abstract: Block data load with transpose techniques are described. In one example, an input is received, at a control unit, specifying an instruction to load a block of data to at least one memory module using a transpose operation. Responsive to the receiving the input by the control unit, the block of data is caused to be loaded to the at least one memory module by transposing the block of data to form a transposed block of data and storing the transposed block of data in the at least one memory.

Abstract: A method for diagnosing rotor rub-impact in a rotating machinery based on vibration signal deconstruction and frequency modulation characteristic anti-noise enhancement, including: converting, based on two-stage integration transformation and high-pass filtering, vibratory acceleration signals from a rotating machinery device into vibratory displacement signals; performing targeted extraction on a rotating frequency component therein based on an improved variational mode decomposition method; calculating and estimating instantaneous fluctuation characteristics of a fundamental frequency of the extracted rotating frequency component using a quadrature-derivative-based normalized Hilbert transform to obtain an instantaneous frequency; inputting a calculated instantaneous frequency sequence into an optimum stochastic resonance system for anti-noise enhancement of intrawave frequency modulation characteristics; and processing FFT on an instantaneous frequency of intrawave frequency modulation characteristics afte

Abstract: The embodiments of the disclosure provide a method, apparatus, device and storage medium for presenting information, which relate to the technical field of computers. The method includes: obtaining object search information, in response to the object search information being object category information, determining a target object category corresponding to the object search information, and presenting object information of a plurality of target objects corresponding to the target object category in a search result presentation page; where all the plurality of target objects are different, and object information of a target object includes object attribute information and image resource information of the target object. By employing the above technical solution, when the user is searching the object category, object information of a plurality of target objects different from each other corresponding to the target object category is presented in the search result page.

Abstract: A circuit wiring determining method includes: obtaining information used to describe a port and a pin; determining a plurality of candidate connection paths based on the information about the port and the pin; obtaining a cost value of each candidate connection path by using a machine learning model, where the cost value indicates impact of the candidate connection path on a total quantity of connection paths between a plurality of ports and a plurality of pins; and determining at least one target connection path from the plurality of candidate connection paths based on the cost value. In this application, the cost value of the candidate connection path is effectively evaluated by using the machine learning model, and a preferred target connection path is determined based on the cost value, to increase a quantity of connections between the ports and the pins of an entire circuit.

Abstract: A method includes forming isolation regions extending into a semiconductor substrate. A semiconductor strip is between the isolation regions. The method further includes recessing the isolation regions so that a top portion of the semiconductor strip protrudes higher than top surfaces of the isolation regions to form a semiconductor fin, measuring a fin width of the semiconductor fin, generating an etch recipe based on the fin width, and performing a thinning process on the semiconductor fin using the etching recipe.

Abstract: A HHT-based voltage quality disturbance detection method, including: obtaining frequency spectrum information of an original voltage signal, and determining whether the original voltage signal is a closely spaced mode signal; based on the frequency spectrum information, performing a singular value decomposition on the original voltage signal and performing a reconstruction to obtain a reconstructed voltage signal with an interference signal removed; if the original voltage signal is the closely spaced mode signal, performing a frequency modulation on the reconstructed voltage signal to obtain a frequency-modulated signal; adding white noise to the reconstructed voltage signal or the frequency-modulated signal, and then performing an empirical mode decomposition; and performing a Hilbert transform on each intrinsic mode function obtained by the empirical mode decomposition to obtain an amplitude and frequency information of a corresponding intrinsic mode function.

Abstract: A semiconductor structure includes a substrate, an isolation structure disposed in the substrate, and a hybrid structure disposed over the isolation structure. The hybrid structure is substantially conformal with respect to a profile of the isolation structure. The hybrid structure includes an oxide component, a nitride component surrounding the oxide component, and a first polysilicon component alongside the nitride component. The nitride component includes a first upper surface closed to the first polysilicon component, and a second upper surface distal to the first polysilicon component. The second upper surface is lower than the first upper surface.

Abstract: A video generation method may be applied to the field of image processing and video generation in the field of artificial intelligence. The method includes: receiving a video generation instruction, and obtaining text information and image information in response to the video generation instruction, where the text information includes one or more keywords, and the image information includes N images; obtaining, based on the one or more keywords, one or more image features that is in each of the N images and corresponds to the one or more keywords; and inputting the one or more keywords and the one or more image features of the N images into a target generator network to generate a target video, where the target video includes M images, and the M images are generated based on the one or more image features of the N images and correspond to the one or more keywords.

Abstract: A crack self-healing functionally gradient material for ceramic cutting tools and a preparation method thereof. The material for ceramic cutting tools has a symmetrical gradient structure, and based on the percentage by mass, components of each layer include 50%-80% of Ti(C7,N3), 25%-5% of (W7,Ti3)C and 20%-0% of TiSi2; contents of components of layers that are symmetrical relative to a central layer are the same and a thickness is symmetrically distributed; a content of Ti(C7,N3) gradually increases from the surface layer to the central layer, contents of (W7,Ti3)C and TiSi2 gradually decrease by 5% from the surface layer to the central layer, and the contents of Ni and Mo gradually increase from the surface layer to the central layer.