Abstract: The present invention relates to the field of energy chemical industry, and disclosed are a gliding arc plasma reactor, and a method for converting methane by means of plasma. The reactor comprises a reactor chamber and a gliding arc plasma generator arranged in the reactor chamber, wherein the gliding arc plasma generator comprises at least two arc surface electrodes which are symmetrically distributed, such that a discharge area can be formed between the arc surface electrodes. According to the gliding arc plasma reactor provided in the present invention, the conversion rate of methane can be significantly improved when methane is converted into olefin; the selectivity of ethylene in the product is improved; and carbon deposition is significantly reduced. In addition, compared with a traditional process for preparing olefin from methane, no CO2 is generated; the ignition and explosion risk is avoided; and the reactor is safer and more environmentally friendly.

Abstract: A packet processing method includes: allocating a portion of storage space in a memory circuit as a storage pool including first storage blocks; storing a packet in one of the first storage blocks when a data size of the packet is less than or equal to a predetermined value, and releasing the one of the first storage blocks to the storage pool after the packet is processed; requesting an increase in a number of the first storage blocks from a kernel when a number of remaining storage blocks in the first storage blocks that do not store data is less than a threshold value; and requesting second storage block from the kernel to increase a data capacity of the storage pool to store the packet when the data size is greater than the predetermined value, and releasing the second storage block to the kernel after the packet is processed.

Abstract: The present disclosure pertains to the field of power electronics technologies, and provides a grid-connected control method and system for a grid-forming converter without a grid-side voltage sensor. The grid-connected control method includes: performing coordinate transformation on a phase of a three-phase capacitor voltage sampled by a phase-locked loop (PLL) to obtain a first phase; in response to control of a first pulse width modulation (PWM) pulse signal, introducing a reference phase, and performing negative feedback regulation on a difference between the reference phase and the first phase to obtain a second phase; and in response to control of a second PWM pulse signal, performing a modulo operation on a difference between the reference phase and the second phase to obtain a third phase, where the third phase is used to replace a phase of the PLL to perform coordinate transformation of a system.

Abstract: A method for chemical-biological cascade synthesis of L-phosphinothricin is carried out as follows: 3-(methylethoxyphosphinyl) ethyl propionate is synthesized by addition reaction from diethoxymethylphosphine and acrylic acid, then a condensation reaction is carried out with 3-(methylethoxyphosphinyl) ethyl propionate and sodium ethoxide as reactants, then the product is subjected to a hydrolysis reaction with diethyl oxalate to synthesize 4-(hydroxymethylphosphinyl)-2-oxobutyric acid, and finally, L-phosphinothricin is catalytically synthesized by taking 4-(hydroxymethylphosphinyl)-2-oxobutyric acid as a raw material, and using highly active and stable wet cells co-expressing phsophinothricin dehydrogenase and alcohol dehydrogenase or co-expressing a phsophinothricin dehydrogenase mutant and alcohol dehydrogenase as a biocatalyst, thereby solving the problems of existing L-phosphinothricin synthesis being tedious, low asymmetric amination reduction activity and poor stability.

Abstract: A holographic antenna includes first and second dielectric substrates, a waveguide structure, a radiation layer, a plurality of switch units and a plurality of isolation components; the first dielectric substrate is on a waveguide port of the waveguide structure; the radiation layer is on a side of the first dielectric substrate away from the waveguide structure, and has a plurality of slits; the second dielectric substrate is on a side of the radiation layer away from the first dielectric substrate; the switch units and the isolation components are between the second dielectric substrate and the radiation layer; orthographic projections of each isolation component and each slit on the first dielectric substrate are first and second patterns, respectively; at least one first pattern is between two adjacent second patterns, and a first distance is between the second pattern and the first pattern closest to the second pattern.

Abstract: The present disclosure discloses a solid amine material absorbing CO2, preparation method, and application thereof, including a porous carrier and water-resistant organic amine loaded on the porous carrier. The water-resistant organic amine includes a biomass-derived polyhydroxyl compound, hydrophilic organic amine and hydrophobic organic amine combined with the biomass-derived polyhydroxyl compound at the same time. The biomass-derived polyhydroxyl compound comprises a six-membered ring structure, with good water resistance and CO2 adsorption effect.

Abstract: This application relates to the field of lighting, and discloses an LED filament. The LED filament includes an LED chip unit, a light conversion layer, and an electrode. The light conversion layer covers the LED chip unit and part of the electrode, and a color of a light emitted by the LED filament after lighting is different from a color of the light conversion layer. This application has the characteristics of uniform light emission and good heat dissipation effect.

Abstract: Provided is a channel monitoring method, an electronic device, and a storage medium. The method includes: obtaining scan data collected by a vehicle body collection component of an automated guided vehicle (AGV) in an area around a vehicle body; obtaining video data collected by a camera in a video collection area, where the camera is one of a plurality of cameras and is used to collect video of at least a partial area of the channel to be monitored of the plurality of channels to be monitored; in a case of determining an existence of a target object based on the scan data collected by the vehicle body collection component and/or the video data collected by the camera, obtaining a target channel where the target object is located; and generating target warning information for the target channel where the target object is located.

Abstract: The application is directed to efficient and economical processes as described in more detail below for the preparation of the beta 3 agonists of the formula of I-7 and intermediate compounds that can be used for making these agonists. The present disclosure relates to a process for making beta-3 agonists and intermediates using ketoreductase (KRED) biocatalyst enzymes and methods of using the biocatalysts.

Abstract: The present disclosure provides a method for performing a programming operation on a memory cell connected to a bit line and controlled by a word line. The method includes applying a first programming voltage signal to the word line to program the memory cell into a first state, applying a first voltage to the bit line, performing a verify operation when the memory cell is in a second state, determining a classification of the memory cell based on the verify operation, applying a second voltage to the bit line based on the determined classification, applying a second programming voltage signal to the word line to program the memory cell into the first state, applying a third voltage to the bit line, applying a third programming voltage signal to the word line to program the memory cell into the first state, and applying a fourth voltage to the bit line.

Abstract: An ultrafast wide-field quantum sensing device using a neuromorphic event-based vision sensor includes a laser generating a laser beam; a dichroic mirror directing the laser beam onto a diamond sample and passing the laser beam reflected from the diamond, and an event camera receiving from the dichroic mirror the beam reflected from the diamond. A source of microwave energy applied to the diamond. A pulse generator synchronizes the microwave source and the event camera to create CW-ODMR measurements, wherein trigger pulses from the pulse generator are applied to the camera and microwave source. The optically detected magnetic resonance (ODMR) resonance frequency is determined based on the CW-ODMR measurements.

Abstract: An opening-closing lamp structure for quickly replacing lenses, comprises a lamp base, on which a lamp board is fixedly arranged, and the lamp board cooperates with lens, a connecting plate is provided on the lamp base, and the connecting plate is fixedly arranged on the lamp base by screws; an opening-closing structure, comprising a cover plate, the cover plate and the connecting plate are connected by a rotating shaft structure, the rotating shaft structure comprises a fixing block, and two connecting holes are provided on the fixing block, and the rotating shaft screws are pierced in the connecting holes, and the rotating shaft screws are respectively connected with the connecting plate and the cover plate, a set of screw holes is provided on an end of the cover plate away from the rotating shaft, and a set of screw holes is provided on a corresponding position of the lamp base.

Abstract: A first network device sends a request packet to a second network device or a network management device, where the request packet is used to request to confirm whether the second network device has an iFIT capability; and the first network device receives a confirmation packet sent by the second network device or the network management device, where the confirmation packet includes confirmation information used to confirm whether the second network device has the iFIT capability.

Abstract: The invention is related to the preparation of protected piperidine carboxylates suitable for use as intermediates that lead, via a series of additional process steps, including a sulfation of a hydroxy urea compound, to the preparation of the beta lactamase inhibitor (2S,5R)-7-oxo-N-piperidin-4-yl-6-(sulfoxy)-1,6-diazabicyclo[3.2.1]octane-2-carboxamide.

Abstract: Methods, systems, and devices for dynamically adjusting data read size are described. A memory system controller may be configured to dynamically adjust a size of data transmitted to a host system based on determining a quantity of data requested by the host system. The memory system controller may support receiving a read command of a first data size, incrementing a counter by the first data size, requesting the data from a memory device according to a second data size, and transmitting the data from the memory device according to a third data size based on the counter. The memory system controller may determine the counter does not satisfy a threshold and configure the third data size as a relatively small quantity of data. However, the memory system controller may determine the counter satisfies the threshold and configure the third data size as a relatively large quantity of data.

Abstract: Provided is a control method for a yarn route inspection equipment, an electronic device and a storage medium. The method includes: detecting whether a first workstation in an initial yarn route inspection path is in a shoveling state; when the first workstation is not in the shoveling state, controlling the yarn route inspection equipment to inspect the first workstation; when the first workstation is in the shoveling state, controlling the yarn route inspection equipment to bypass the first workstation to inspect a second workstation and mark the first workstation as an uninspected state; and when inspection of the initial yarn route inspection path is completed and there is a workstation in the uninspected state, controlling the yarn route inspection equipment to perform supplementary inspection on the workstation in the uninspected state in the initial yarn route inspection path.

Abstract: An oxygen bleaching method of pulp includes the steps of: adding a solution formulated by a magnesium salt and an activator to an unbleached chemical pulp, stirring to be mixed well, and bleaching by introducing oxygen. The activators are nano zero-valent metals that are conventional, low-cost, and recyclable. These activators can activate low-concentration oxygen at low-temperature in neutral aqueous solution to efficiently generate peroxide anion radicals, so as to promote the generation of hydroperoxide anions and peroxide ions, achieving high efficient delignification. The whole process does not generate waste water, the oxygen consumption is only 50-85% of the original process, the yield is increased by 1.5-2.8% compared with the original system, the pulp brightness is increased to 28-32° SR, and the magnesium salt can be recycled and reused.