Abstract: A flip-flop includes a first set of transistors of a first type being located in a first row and a second set of transistors of a second type being located in a second row. The second type being different from the first type. The first and second set of transistors include a first master latch circuit and a second master latch circuit. The first and second master latch circuit are separated from each other in the first direction by a first distance. A first output signal of the first and second master latch circuit is a first input signal of the first master latch circuit and the second master latch circuit. A second output signal of the first and second master latch circuit is a second input signal of the first and second master latch circuit.

Abstract: A method for 3D positioning in a subway construction site. The method includes: establishing a 3D coordinate system corresponding to a shaft area, and determining a coordinate of each UWB base station set in different layers of the shaft area; ranging a positioning label through each UWB base station; filtering and discarding error data from the ranging data; dividing the 3D coordinate system into a plurality of equal cube grids, selecting a preset number of UWB base stations from the set UWB base stations based on the filtered result, and determining a position record of the positioning label in each cube grid in turn based on coordinates of the selected UWB base stations and corresponding ranging data, and the center point coordinate of each cube grid; and determining a conclusion coordinate of the positioning label by voting based on the position record of each cube grid.

Abstract: A portable energy-storage power supply device comprises a shell, a control module, a battery module and an inverter module. The inverter module is installed on a right shell through bolts. A slot for installing a wireless charging cover is formed after a left shell and the right shell are assembled together. A charging coil holder for fixing a wireless charging coil is disposed on an inner side of the wireless charging cover. The portable energy-storage power supply device has the advantages that installation is convenient, operation is easy, the layout of internal parts is reasonable, and the width of the shell is small.

Abstract: The present disclosure provides a display substrate, a manufacturing method of the display substrate and a display apparatus. The display substrate includes a base substrate; an alignment layer, on the base substrate; a first electrode, located between the base substrate and the alignment layer and being in contact with the alignment layer; and a pattern layer, located between the base substrate and the alignment layer and being in contact with the alignment layer. An orthographic projection of the pattern layer on the base substrate does not overlap an orthographic projection of the first electrode on the base substrate, and a ratio of a contact angle of the pattern layer to a contact angle of the first electrode is greater than or equal to 7/12 and less than 3/2.

Abstract: This invention relates to a codon deoptimized severe acute respiratory syndrome coronavirus 2 (SARS-COV-2) genome. In particular, embodiments of the invention concern a vaccine comprising live attenuated SARS-COV-2 comprising a partly codon deoptimized viral genome, SARS-COV-2 comprising a partly codon deoptimized viral genome, as well as their use in methods of treatment and prevention of viral infection. The ORF1a region of the viral genome has been codon deoptimized.

Abstract: An antenna includes a first substrate and a second substrate oppositely arranged; the first substrate includes: a first dielectric substrate having a first surface and a second surface oppositely arranged; a reference electrode layer on the first surface; at least one first radiation part on the second surface and having an orthographic projection on the first dielectric substrate at least partially overlapping that of the reference electrode layer; and at least one feeding structure on the second surface, electrically connected to the first radiation part, and having an orthographic projection on the first dielectric substrate at least partially overlapping that of the reference electrode layer; the second substrate includes: a second dielectric substrate opposite to the second surface; and at least one second radiation part on the second dielectric substrate, and each having an orthographic projection on the first surface within that of one first radiation part.

Abstract: A prosthetic heart valve for deployment between the right atrium (1) and the right ventricle (2) includes an outer stent layer (100), a skirt (200) and prosthetic leaflets (300). The outer stent layer (100) includes a flange section (110), a main section (120) and an attachment section (130), which are sequentially joined along an axial direction. The flange section (110) has a diameter gradually increasing in the axial direction away from the main section (120) and is configured to be pressed on the tricuspid valve annulus (3). The main section (120) is configured to be seated inside of the tricuspid valve leaflet (4). The attachment section (130) includes a septal leaflet attachment tine (131) and an anterior and posterior leaflet attachment tine (132).

Abstract: A method of spectroscopic analysis includes: collecting a set of calibration spectra for calibration gas samples by scanning a sample range of wavelengths; calculating a first concentration of a target analyte and first concentrations of background components for each calibration spectrum using a multivariant algorithm; modeling an ideal concentration of the target analyte as a function of the first concentrations using a correlative model; collecting a field spectrum for an unknown field gas sample, wherein the field gas sample includes the target analyte and at least some of the background components; calculating a second concentration of the target analyte and second concentrations the background components for the field spectrum using the multivariant algorithm; correcting the second concentration of the target analyte using the correlative model and second concentrations of the background components; and determining a corrected target analyte concentration in the field gas sample based on the corrected s

Abstract: Embodiments of the present disclosure provide a display substrate having a display region and a frame region. The display substrate includes a plurality of display pixels and a plurality of dummy pixels arranged in an array; the display pixels are distributed in the display region; the dummy pixels are distributed in the frame region. Each display pixel includes a first pixel electrode and a first common electrode; and a first voltage difference exists between the first pixel electrode and the first common electrode. Each dummy pixel includes a second pixel electrode and a second common electrode; and a second voltage difference exists between the second pixel electrode and the second common electrode. A difference between the first voltage difference and the second voltage difference is less than a set value. Embodiments of the present disclosure further provides a display panel and a display apparatus.

Abstract: The present invention provides a method for promoting functional cure of AIDS by reducing HIV reservoir with lenalidomide, the method including administering a therapeutically effective amount of lenalidomide to a patient. Also provided is a method for reducing intracellular P24 and cell-related HIV RNA in PBMCs derived from HIV patients in vitro with lenalidomide, including orally administering lenalidomide at 25 mg/d at days 1 to 21 in a 28-day cycle, and continuing ART for 48 weeks. Further provided is a method for inhibiting latent activator-induced activation of latent HIV cell line U1 with lenalidomide, including orally administering lenalidomide at 25 mg/d at days 1 to 21 in a 28-day cycle, and continuing ART for 48 weeks.

Abstract: The invention provides a stent loading system and a method using the same for loading a stent into a sheath. The stent includes a stent body, and an outer periphery of one end of the stent body is provided with a hook. The stent loading system includes a hook straightener for straightening the hook on the stent and a compressor, wherein the stent in which the hook is straightened is reduced in diameter and crimped through the compressor, and the stent crimped is delivered into a preloaded tube; the stent is connected with a delivery system penetrating in the sheath, and the stent in the preloaded tube is delivered into the sheath under the traction of the delivery system.

Abstract: A flip-flop includes a first set of transistors of a first type being located in a first row and a second set of transistors of a second type being located in a second row. The second type being different from the first type. The first and second set of transistors include a first master latch circuit and a second master latch circuit. The first and second master latch circuit are separated from each other in the first direction by a first distance. A first output signal of the first and second master latch circuit is a first input signal of the first master latch circuit and the second master latch circuit. A second output signal of the first and second master latch circuit is a second input signal of the first and second master latch circuit.

Abstract: The disclosure discloses a method to elevate the amount of steviol glycosides remained in the recrystallization mother liquor of Stevia extract, and belongs to the field of modification and extraction of natural compounds. The disclosure adopts lactase for highly specific catalytic hydrolysis of stevioside to convert stevioside into rubusoside which usually can only be obtained from leaves of Rubus suavissimus S. Lee; and meanwhile, after stevioside in the mother liquor glycosides is converted, since the polarity difference between rubusoside and rebaudioside A is far larger than the polarity difference between stevioside and rebaudioside A, rebaudioside A is more easily separated out of the mother liquor glycosides. A technology provided by the disclosure is also applicable to value increment of mixed steviol glycosides containing stevioside and is beneficial for separating out rebaudioside A from the mixed steviol glycosides.

Abstract: An apparatus comprises a first mirror; a second mirror; a modulation layer positioned between the first mirror and the second mirror and comprising a plurality of modulation regions; a diffraction layer positioned between the modulation layer and the second mirror, and an input port admitting a light beam into the apparatus. The light beam passes through the diffraction layer and is modulated by the modulation layer to create a first modulated beam before being reflected by the first mirror, the first mirror reflecting the first modulated beam toward the second mirror, the second mirror reflecting the first modulated beam toward the modulation layer to be modulated for at least a second time.

Abstract: Disclosed are a method and apparatus for selecting answers to idiom fill-in-the-blank questions, a computer device, and a storage medium. The method includes: obtaining a question text of idiom fill-in-the-blank questions, the question text including a fill-in-the-blank text and n candidate idioms, and the fill-in-the-blank text including m fill-in-the-blanks to be filled in with the candidate idioms; obtaining an explanatory text of all the candidate idioms; obtaining, through an idiom selection fill-in-the-blank model, a confidence that each fill-in-the-blank is filled in with each candidate idiom; selecting m idioms from the n candidate idioms to form multiple groups of answers; calculating a sum of the confidences that the fill-in-the-blanks are filled in with the candidate idioms in each group of answers; and obtaining a group of answers with the highest confidence sum as answers to the idiom fill-in-the-blank questions.

Abstract: A compact steel cord is provided. The cord includes a core-filament I steel wire with a diameter of d0, and four middle-layer M steel wires with a diameter of d1 and eight outer-layer O steel wires with a diameter of d2 that are twisted around the core-filament I steel wire in the same lay direction and the same lay length. Gaps L are reserved between the outer-layer O steel wires, an average width of the gaps L is not smaller than 0.02 mm, and the total size of the gaps L is larger than d0 and smaller than d1. The steel cord of a stable structure can be obtained by controlling the proportion of the sizes of all layers of monofilaments, the rubber coating performance of a tire cord can also be improved, the corrosion resistance, fatigue resistance, impact resistance and adhesion retention of a tire are improved.

Abstract: The present disclosure relates to the technical field of chemical engineering, and specifically discloses a method for removing oxygenated compounds from a Fischer-Tropsch oil having a high carbon number. A reaction-extraction combined process is used in this method for removing oxygenated compounds from a Fischer-Tropsch oil having a high carbon number, wherein the Fischer-Tropsch oil (C5-C20) is firstly subjected to alkaline washing with an alkaline aqueous solution to convert acidic substances into water-soluble salts. The Fischer-Tropsch oil is subjected to a primary extraction with a carbonate-based extractant to remove alcohols and esters therein, and subsequently subjected to a secondary extraction with propylene carbonate to remove ketones and aldehydes impurities therein, thereby removing oxygenated compounds in the Fischer-Tropsch oil. After extraction, the content of the oxygenated compounds in the Fischer-Tropsch oil may be down to 1-60 ppm, and the yield of oil product may be kept 90% or more.

Abstract: A ceramic heating element is disclosed, including: a flat or needle-shaped ceramic housing, a support bracket sleeved in the ceramic housing, and a heating wire evenly wound on the support bracket. An interior of the support bracket is a hollow structure. An electronic cigarette is further disclosed, including the ceramic heating element.