Abstract: An audio and video streaming device includes a device main body and a lens cover. The device main body includes a power source, a lens element, an audio and video output unit and a sensing and controlling module. When the power source is in an on state and a relationship between the lens cover and the lens element is in an opened state, the sensing and controlling module issues an audio and video streaming signal to the audio and video output unit. When the power source is in the on state and the relationship between the lens cover and the lens element is in a closed state, the sensing and controlling module stops issuing the audio and video streaming signal, and the power source is maintained in the on state.

Abstract: This application discloses power distribution equipment and a power distribution system. The power distribution equipment includes a power distribution device and a power distribution box, where the power distribution device is capable of being inserted into and removed from the power distribution box; a connection port is disposed at a first end of the power distribution device, where the connection port is used to connect a power cable or a user load line; a power connection terminal is disposed at a second end of the power distribution device, where the power connection terminal is used to plug into a busbar inside the power distribution box; and the connection port and the power connection terminal are connected inside the power distribution device. A design in which the power distribution device is capable of being inserted into and removed from the power distribution box simplifies operation and improves convenience.

Abstract: A digital photographing device is provided. The digital photographing device can be operated in at least two manual focus modes to provide at least two different common focus lengths. The user can select a suitable manual focus mode from the at least two manual focus modes. When the user faces the digital photographing device to take a selfie or create a live stream, the user can realize the current focus mode of the digital photographing device in real time according to the indication of the focus mode indication module.

Abstract: A digital photographing device is provided. The digital photographing device can be operated in at least two manual focus modes to provide at least two different common focus lengths. The user can select a suitable manual focus mode from the at least two manual focus modes. When the user faces the digital photographing device to take a selfie or create a live stream, the user can realize the current focus mode of the digital photographing device in real time according to the indication of the focus mode indication module.

Abstract: An image capturing device includes a casing, a camera assembly, an adjustment element, a first stopping structure and a second stopping structure. The camera assembly is disposed within the casing. A portion of the camera assembly is exposed outside the casing. The adjustment element is connected with the camera assembly, and rotatable relative to the casing. As the adjustment element is rotated, the camera assembly is correspondingly rotated. The adjustment element includes a contacting structure. The first stopping structure and the second stopping structure are arranged between the casing and the adjustment element and located at different positions. When the camera assembly is switched to a horizontal photographing mode, the contacting structure is positioned at the first stopping structure. When the camera assembly is switched to a vertical photographing mode, the contacting structure is positioned at the second stopping structure.

Abstract: An image capturing device includes a casing, a camera assembly, an adjustment element, a first stopping structure and a second stopping structure. The camera assembly is disposed within the casing. A portion of the camera assembly is exposed outside the casing. The adjustment element is connected with the camera assembly, and rotatable relative to the casing. As the adjustment element is rotated, the camera assembly is correspondingly rotated. The adjustment element includes a contacting structure. The first stopping structure and the second stopping structure are arranged between the casing and the adjustment element and located at different positions. When the camera assembly is switched to a horizontal photographing mode, the contacting structure is positioned at the first stopping structure. When the camera assembly is switched to a vertical photographing mode, the contacting structure is positioned at the second stopping structure.

Abstract: A process comprises continuously adding a first stream and a second stream to a sulfonation vessel, wherein the first stream comprises aminoethanol sulfate ester (AES) and the second stream comprises an aqueous solution of sodium sulfite (Na2SO3). The process comprises continuously mixing the AES and the aqueous solution of Na2SO3 in the sulfonation vessel, thus producing a mixture. The process comprises continuously subjecting the mixture to heat in the presence of an inert gas, thus converting the AES to the taurine via sulfonation. In an aspect, the AES has a residence time of no more than four hours in the sulfonation vessel. In an aspect the heating step is conducted at a temperature of at least 115° C. and a pressure of at least 200 psi.

Abstract: Disclosed is a transient-state THz spectrometer applied to cells and biological macromolecules, including a femtosecond laser amplifier. A femtosecond laser output by the femtosecond laser amplifier is divided into two beams of pump light and probe light after passing through a beam splitter of which a transmission-reflection ratio is 7:3, the pump light is focused to irradiate a gap between electrodes of a nonlinear photoconductive antenna and emit a terahertz wave after successively passing through a half wave plate, a silver-plated reflector and a first lens, the terahertz wave forms a terahertz wave collineation after successively passing through a second lens, a slab waveguide, a third lens and an ITO film, the terahertz wave collineation and the probe light form a probe light collineation of wavefront tilt which is perpendicularly incident on a ZnTe crystal and detected and recorded by using a CCD camera.

Abstract: Processes for the oxidation of carbohydrate dehydration products, such as furanics that can be oxidized to the bio-based monomer 2,5-furandicarboxylic acid (FDCA), are disclosed, according to which certain co-feeds, having been discovered to impart a beneficial reaction stabilizing effect, are oxidized together with the carbohydrate dehydration products. This can advantageously counteract, in whole or in part, detrimental effects of humin impurities present in oxidation feed, with such impurities having been generated as byproducts of the upstream dehydrating step. An important co-feed is para-xylene that can be co-oxidized to form the petroleum-based monomer terephthalic acid (TPA), such that co-processing can beneficially yield two valuable monomers, while improving performance, particularly in terms of reaction stability, over comparable processes in which only the first monomer is produced.

Abstract: A process for producing taurine, comprising mixing aminoethanol sulfate ester (AES) and a carbonate or bicarbonate, or combination thereof, thus producing a reaction mixture, and heating the reaction mixture in the presence of a sulfite or a bisulfite, or combination thereof, such that taurine is formed.

Abstract: A process for producing taurine, comprising mixing aminoethanol sulfate ester (AES) and a carbon dioxide, thus producing a reaction mixture, and heating the reaction mixture in the presence of a sulfite or a bisulfite, or combination thereof, such that taurine is formed.

Abstract: Disclosed is a transient-state THz spectrometer applied to cells and biological macromolecules, including a femtosecond laser amplifier. A femtosecond laser output by the femtosecond laser amplifier is divided into two beams of pump light and probe light after passing through a beam splitter of which a transmission-reflection ratio is 7:3, the pump light is focused to irradiate a gap between electrodes of a nonlinear photoconductive antenna and emit a terahertz wave after successively passing through a half wave plate, a silver-plated reflector and a first lens, the terahertz wave forms a terahertz wave collineation after successively passing through a second lens, a slab waveguide, a third lens and an ITO film, the terahertz wave collineation and the probe light form a probe light collineation of wavefront tilt which is perpendicularly incident on a ZnTe crystal and detected and recorded by using a CCD camera.

Abstract: A coupled inductor having a body, wherein a first electrode and a second electrode are connected to a first coil, and a third electrode and a fourth electrode are connected to a second coil, wherein a first horizontal line segment passing through the first electrode and the second electrode and a second horizontal line segment passing through the third electrode and the fourth electrode crosses each other at a location inside the periphery of a bottom surface of the body.

Abstract: A centrally-mounted drive mechanism used for a power-assisted bicycle, and a power-assisted bicycle. The centrally-mounted drive mechanism comprises an outer casing (1), an electric motor (2), a planetary gear mechanism in a transmission connection with an output shaft of the electric motor (2), a bevel gear driving end (9), and a bevel gear driven end (10) that meshes with the bevel gear driving end (9), said bevel gear driven end (10) being connected to a crankset (13). The planetary gear mechanism comprises a planetary gear (4) and a planetary gear output bracket (5), and a bevel gear support base (8) that is sleeved on the outer part of the planetary gear output bracket (5). A clutch (6) is disposed between the planetary gear output bracket (5) and the bevel gear support base (8), and a transmission connection is formed by means of the clutch (6) between the planetary gear output bracket (5) and the bevel gear support base (8).

Abstract: Provided in the present invention a method for evaluating the mixing effect of a CO2 oil-displacing and mixing agent, characterized in measuring the volume expansion of a CO2-oil interface when pressure is gradually increased, drawing a mixed-phase percentage-pressure curve (?-P curve), and evaluating the mixing effect of the CO2 oil-displacing and mixing agent by means of comparing the characteristics of the ?-P curve. Further provided in the present invention is a method for initially screening a CO2 oil-displacing and mixing agent.

Abstract: An integrated, co-product capable process is provided for producing taurine in particular with optionally one or both of monoethanolamine and diethanolamine from one or more sugars, comprising pyrolyzing one or more sugars to produce a crude pyrolysis product mixture including glycolaldehyde and formaldehyde; optionally removing formaldehyde from the crude pyrolysis product mixture, then combining the crude pyrolysis product mixture with an aminating agent in the presence of hydrogen and further in the presence of a catalyst to produce at least monoethanolamine from the crude pyrolysis product mixture; optionally recovering diethanolamine from the crude reductive amination product, sulfating at least a portion to all of the monoethanolamine product to produce 2-aminoethyl hydrogen sulfate ester; and sulfonating the 2-aminoethyl hydrogen sulfate ester to produce taurine.

Abstract: A single-impulse panoramic photoacoustic computed tomography (SIP-PACT) system for small-animal whole-body imaging is disclosed. In addition, a dual-speed of sound image universal back-projection reconstruction method is disclosed. Further, a PACT system for imaging a breast of a subject is disclosed.

Abstract: An electronic device comprising: a body having a first portion and a second portion located below the first portion, wherein a bottom surface of the first portion and a side surface of the second portion forms an opening under the bottom surface of the first portion, wherein at least one portion of an electrode is disposed on the bottom surface of the first portion of the body, and at least one portion of the second portion of the body is disposed in an opening of a circuit board with the electrode being disposed on and electrically connected with the circuit board.

Abstract: The power distribution component is configured to connect to a power distribution box in a pluggable manner. A main body is provided with a first power terminal, a signal terminal, and a second power terminal that are arranged along a first direction. The first power terminal is configured to electrically connect to a first power busbar of the power distribution box, the signal terminal is configured to electrically connect to a signal busbar of the power distribution box, and the second power terminal is configured to electrically connect to a second power busbar of the power distribution box. Polarities of the first power terminal and the second power terminal are opposite. An end, facing away from the main body, of the mistake proofing structure is provided with an abutting surface, configured to abut against the signal busbar when the power distribution component is reversely inserted into the power distribution box.

Abstract: Processes are disclosed for the synthesis of an ?-amino acid or ?-amino acid derivative, from a starting compound or substrate having a carbonyl functional group (C?O), with hydroxy-substituted carbon atoms at alpha (?) and beta (?) positions, relative to the carbonyl functional group. According a particular embodiment, an ?-, ?-dihydroxy carboxylic acid or carboxylate is dehydrated to form a dicarbonyl intermediate by transformation of the ?-hydroxy group to a second carbonyl group (adjacent a carbonyl group of the starting compound) and removal of the ?-hydroxy group. The dicarbonyl intermediate is optionally cracked to form a second, in this case cracked, dicarbonyl intermediate having fewer carbon atoms relative to the dicarbonyl intermediate but preserving the first and second carbonyl groups. Either or both of the dicarbonyl intermediate and the cracked dicarbonyl intermediate may be aminated to convert the second carbonyl group to an amino (—NH2) group, for producing the corresponding ?-amino acid(s).