Abstract: Light olefins may be produced from hydrocarbons by a method including passing a hydrocarbon feed stream into one or more feed inlets of a reactor, using catalyst formulations or mixtures. Catalyst formulations may include multi-zeolite composite particles, or a mixture that is a physically mixed combination of separate particles of at least first composite particles of a first type of zeolite and second composite particles of a second type of zeolite. The reactor may include an upper reactor portion defining an upper reaction zone and a lower reactor portion defining a lower reaction zone. The catalyst may move in a generally downward direction through the upper reactor portion and the lower reactor portion, and the hydrocarbon feed stream may move in a generally upward direction through the lower reactor portion and upper reactor portion such that the hydrocarbon feed stream and the catalyst move with a counter-current orientation.

Abstract: An image stitching method and apparatus are disclosed. The image stitching apparatus includes at least one processor and a memory. The processor may obtain a plurality of images at different viewpoints, estimate homographies of each of the plurality of images, generate an aligned image by aligning the plurality of images based on the homographies of each of the plurality of images, obtain a collective energy map by inputting the aligned image to a neural network, estimate a stitching line of the aligned image based on the collective energy map, and generate a stitched image by blending the aligned image based on the stitching line.

Abstract: Provided is a method for creating a virtual reality content, storing the virtual reality content in a transmission buffer, and after that, managing the transmission buffer. A server creates the virtual reality content based on user's motion information, stores the virtual reality content in the transmission buffer and is allowed to modify the virtual reality content stored in the transmission buffer based on subsequently received user's motion information, so that the most recent user's motion information can be appropriately reflected in the virtual reality content. It is possible to provide a more immersive virtual reality service.

Abstract: A pleuromutilin cinnamic acid ester compound with activities against antibiotic-resistant infections having the following formula (I) R1, R2, R3, R4 and R5 are independently hydrogen, halogen, nitro, cyano, methoxy, trifluoromethyl, benzyloxy, aryl or dimethylamino.

Abstract: A wavefront sensor includes a mask and a sensor utilized to capture a diffraction pattern generated by light incident to the mask. A reference image is captured in response to a plane wavefront incident on the mask, and another measurement image is captured in response to a distorted wavefront incident on the mask. The distorted wavefront is reconstructed based on differences between the reference image and the measurement image.

Abstract: The present invention provides a radiative cooling structure that can be fabricated using solution-based processes and offer great IR-selectivity referring to low absorptivity within solar spectrum and high emissivity within the atmosphere transmission window (8-13 microns) for daytime radiative cooling. This structure includes a reflective layer, a ceramic IR-selectively emissive layer and a ceramic emission boosting layer, and the ceramic emission boosting layer is able to boost the overall emissivity of the radiative cooling structure within the atmosphere transmission windows and avoid infrared emission outside the atmosphere transmission window. The IR-selectivity contributes to larger temperature reduction, especially in high humidity area.

Abstract: The present disclosure relates to a method for determining a source sink term of an ionic type rare earth ore leaching process. The method includes the following four steps: (1) determining an ion exchange selection coefficient of a rare earth ore sample; (2) determining the rare earth grade of the rare earth ore sample; (3) building a source sink term model of the ore leaching process; and (4) determining parameters in the source sink term model. The present disclosure can simulate the ionic type rare earth ore leaching process by combining a convection-dispersion equation, and determine the optimal concentration of the ore leaching agent. When an ammonium sulfate solution at an optimal concentration of 12.0 g/L is used to perform a column leaching test, the obtained rare earth leaching rate is up to 96.3 percent.

Abstract: A gas sensor includes a gate electrode; a dielectric layer covering one surface of the gate electrode; an indium (In) gallium (Ga) zinc (Zn) oxide (O) (IGZO) thin-film formed over the dielectric layer, and first and second metallic electrodes formed on a surface of the IGZO thin-film to act as source and drain, respectively. The IGZO thin-film has an In concentration of 11%+/?3%, Ga concentration of 11%+/?3%, Zn concentration of 7%+/?3%, and O concentration of 71%+/?3%, with a sum of the concentrations being 100%, and the gas interacts with the IGZO thin-film and changes a current through the IGZO thin-film.

Abstract: The disclosure discloses a superconducting magnet system and a quench protection circuit thereof. The quench protection circuit includes: a superconducting unit, a first diode integrated element, a second diode integrated element, a third diode integrated element, a low-temperature superconducting switch, a thermal shield and a vacuum vessel. The superconducting unit is composed of M superconducting coils connected in series. The low-temperature superconducting switch is connected to the first superconducting coil and the M-th superconducting coil. The first diode integrated element is connected in parallel with the low-temperature superconducting switch; the thermal shield and the second diode integrated element are connected in series and then connected in parallel at both ends of any symmetrical coil subsets in the superconducting unit.

Abstract: Provided herein are chiral compounds that exhibit circularly polarized photoluminescence and electroluminescence and electroluminescent devices and circularly polarized fluorescent probes comprising the same.

Abstract: Disclosed herein is an anti-biofouling copolymer including a first structural unit represented by formula (I) and a second structural unit represented by formula (II), wherein each of the substituents is given the definition as set forth in the Specification and Claims. Also disclosed herein is a method for preparing an anti-biofouling copolymer which includes subjecting a first compound represented by formula (a) to polymerization reaction with a second compound represented by formula (b), wherein each of the substituents is given the definition as set forth in the Specification and Claims.

Abstract: Apparatuses and methods for preparing carbon nanostructure sheets are provided. The apparatuses may include a casting body including a substrate configured to move along a first direction, a slurry reservoir configured to contain a slurry, a dispenser connected to the slurry reservoir and configured to dispense the slurry onto a surface of the substrate and a doctoring member that extends in a second direction traversing the first direction and that is positioned above the surface of the substrate. The slurry may include carbon nanostructures, and/or one or more functional materials. The doctoring member may be spaced apart from the surface of the substrate by a predetermined distance.

Abstract: Provided herein are aggregation-induced emission luminogens useful as photodynamic therapy and imaging agents, compositions including two or more aggregation-induced emission luminogens, pharmaceutical compositions comprising the same, and methods of use and preparation thereof.

Abstract: The invention relates to a 2-isopropyl malate synthase, a genetically engineered bacterium for producing L-leucine and application thereof and belongs to the field of metabolic engineering. The genetically engineered bacterium is obtained by overexpressing an isopropyl malate synthase coding gene leuAM for relieving feedback inhibition by L-leucine, an acetohydroxy acid synthase coding gene ilvBNM for relieving feedback inhibition by L-isoleucine, a 3-isopropyl malate dehydrogenase coding gene leuB and a 3-isopropyl malate dehydratase coding gene leuCD in host cells. The genetically engineered bacterium for producing the L-leucine is free from nutritional deficiency, rapid in growth, short in fermentation period, high in yield and high in conversion rate.

Abstract: A method of treating a subject suffering from cancer comprising a step of administering an effective amount of a group of double-stranded RNA molecules to the subject, wherein the RNA molecule is isolated or derived from a bacteria of the genus Escherichia. A method of inhibiting growth or proliferation of cancer cells comprising a step of contacting said cells with said RNA molecule; and a pharmaceutical composition for treating cancer comprising said RNA molecule and a pharmaceutically tolerable excipient. Also a double-stranded RNA molecule and a recombinant vector comprising the double-stranded RNA molecule.

Abstract: The present technology provides a system and a method for terminal positioning.

Abstract: A plurality of modules are arranged on the broadside of a ship, each module includes a housing, and the housing is provided with a composite gas supply assembly, a composite airbag assembly, an intelligent control assembly, and a mechanical transmission assembly; the intelligent control assembly is configured for predicting the impact energy and a collision angle of a collision object, sending an inflation instruction to the composite gas supply assembly, inflating a large airbag to a proper air pressure, inflating a small airbag to a rated air pressure, and sending an angle adjustment instruction to the mechanical transmission assembly to adjust the collision angle of the small airbag; the large airbag is matched with the small airbag to fully absorb a collision force vertically acting on the surface of a hull.

Abstract: An object detection method and an electronic apparatus are provided. A processor is configured to perform the following. An original image is received. A plurality of initial feature layers of different scales is extracted from the original image. A plurality of fused feature layers of different scales is obtained through an interpolation and an addition operation based on the initial feature layers. The fused feature layers are respectively input into corresponding detection heads to obtain a bounding box location probability distribution through a bounding box regression branch of the detection head and obtain a classification probability distribution through a classification branch of the detection head.

Abstract: A modular cabin transfer device suitable for large luxury cruise ships includes transfer vehicles and pull rods, where each of the transfer vehicles includes a clamping device, clamping assemblies, and a driving assembly, the upper and lower ends of the clamping device are respectively provided with the clamping assemblies, the clamping device makes the clamping assemblies at the upper and lower ends thereof move toward each other or move backwards, and the clamping assemblies at the upper and lower ends thereof clamp the cabin; the driving assembly is arranged at the lower end of the clamping device, and is configured to drive the transfer vehicle to move; adjacent transfer vehicles are connected by the pull rods.

Abstract: A method for in-situ non-contact detection of a symmetry error of a keyway located on the shaft-type workpiece includes the following steps: establishing a detection system and a system calculation coordinate system; controlling rotation of a shaft-type workpiece, continuously acquiring data of a detection part by means of a laser displacement sensor, and calculating and analyzing the acquired data to obtain a symmetry error of a detection section; and moving the laser displacement sensor in an axis direction, and calculating symmetry errors of a plurality of sections of the keyway, to obtain a symmetry error of the keyway located on the shaft-type workpiece.