Abstract: Provided in the present invention are a polar marine-derived macrocyclic lactam compound, and a preparation method therefor and the use thereof. Provided in the present invention is a macrocyclic lactam compound as represented by formula 1 or a pharmaceutically acceptable salt thereof. The compound has a novel structure and good inflammation inhibitory activity, and provides a new candidate compound for developing an anti-inflammatory drug.

Abstract: Systems, methods, and computer program products for identifying a candidate product in an electronic marketplace based on a visual comparison between candidate product image visual content and input query image visual content. Embodiments generate and store descriptive image signatures from candidate product images or selected portions of such images. A subsequently calculated visual similarity measure serves as a visual search result score for the candidate product in comparison to an input query image. Any number of images of any number of candidate products may be analyzed, such as for items available for sale in an online marketplace. Image analysis results are stored in a database and made available for subsequent automated on-demand visual comparisons to an input query image. The embodiments enable substantially real time visual based product searching of a potentially vast catalog of items.

Abstract: A circuit board device includes a multilayer board structure, a main ground and a circuit module. The main ground is configured in the multilayer board structure. The circuit module includes two differential-signal portions. These differential-signal portions are all located on one core layer of the multilayer board structure. Each of the differential-signal portions includes a differential through-hole pair and a plurality of ground through holes, and these ground through holes are arranged at intervals to surround the differential through-hole pair, and are electrically connected to the main ground. The patterns of the differential-signal portions are mirror symmetrical to each other based on an imaginary mirror line therebetween, and the minimum linear distances from the differential-signal portions to the imaginary mirror line are equal to each other.

Abstract: Provided are a method and apparatus for analyzing a laying stress on a cable. The method for analyzing a laying stress on a cable includes: segmenting, according to cable grounding manners, cable laying manners and cable bending types that correspond to the discrete points of pipeline detection in a cable laying channel, the discrete points; and performing, according to segmentation information and measurement information of the discrete points, stress analysis calculation on minimum segments in which the discrete points are located. In the present application, stress analysis of each segment of the cable during the cable laying process is achieved in real time, providing data support for laying the cable. Workers responsible for laying the cable can adopt corresponding protective measures during the laying process according to a stress analysis result so that the cable can be really protected, improving the safety of the cable during the cable laying process.

Abstract: A magnetic resonance imaging (MRI) scanning system and a method is presented. The method comprises: preconfiguring a plurality of scan configurations, the plurality of scan configurations corresponding to a plurality of scan ranges of a subject to be scanned, and each of the scan configurations comprising an implant-related MRI scan parameter; and executing a scan procedure on the subject to be scanned using at least one of the preconfigured plurality of scan configurations.

Abstract: Small interfering RNAs (siRNA) having specific modification patterns to improve interference efficiencies thereof. The modification patterns each comprises a combination of 2?-O methyl modification, 2?-O-fluoro-modification, and phosphorothioate (PS) bonds at defined positions in the sense strand and anti-sense strand of each siRNA, and optionally 5? phosphate modifications.

Abstract: A flow electrode capacitive deionization system and a method for recovering phosphorus in phosphogypsum leachate and synchronous performing brine desalination belong to the technical field of wastewater treatment and recycling. The flow electrode capacitive deionization system includes a phosphorus recovery electrodeionization module and a desalination electrodeionization module. A first flow electrode solution reservoir, a phosphorus recovery electrodeionization module cathode flow electrode chamber, and a desalination electrodeionization module anode flow electrode chamber are interconnected in a circulation. A second flow electrode solution reservoir, a phosphorus recovery electrodeionization module anode flow electrode chamber, and a desalination electrodeionization module cathode flow electrode chamber are interconnected in a circulation. Two independent flow electrode solution circulation loops are formed.

Abstract: An autonomous cleaning device, includes: a mobile platform, configured to move autonomously on a cleaning surface; and a cleaning module, disposed on the mobile platform and including a wet cleaning module, configured to clean at least part of the cleaning surface in a wet cleaning mode.

Abstract: A method may include at least partially initializing a trellis of an SE engine at least partially based on predetermined state information about a communication channel associated with an incoming data stream; and processing, via the MLSE engine, the incoming data stream to further initialize the trellis and decode the incoming data stream.

Abstract: The present disclosure provides a communication wide-area coverage system and method based on reconfigurable intelligent surface (RIS) technology. The system includes a RIS base station, a communication board, a controller, and a power supplier. The communication board communicates with a target cell to obtain a communication rate and position coordinates of a target coverage cell and feeds back the communication rate and position coordinates to the controller. The controller calculates a relative position between the target coverage cell and the RIS base station according to the obtained position information of the target coverage cell, and controls the RIS base station according to the relative position and the communication rate to generate a beam covering the target coverage cell. The RIS base station uses a RIS phased-array antenna integrated with an electronic device without requiring a radio-frequency transmitter and receiver (TR) component and a large number of phase shifting devices.

Abstract: A semiconductor chiplet device includes a first die, a second die, a decoupling circuit and an interposer. The interposer includes a plurality of power traces and a plurality of ground traces. The first die and the second die are arranged on a first side of the interposer according to a configuration direction, and are coupled to the power traces and the ground traces. The decoupling circuit is arranged on a second side of the interposer, and is coupled to the power traces and the ground traces. The power traces and the ground traces are staggered with each other, and an extending direction of the ground traces and the power traces is the same as the configuration direction.

Abstract: A light-emitting diode and a white light-emitting device are provided. The light-emitting diode includes a p-type semiconductor layer, an n-type semiconductor layer, and a light-emitting stacked layer disposed therebetween. The light-emitting stacked layer includes alternately-stacked well layers and barrier layers. The light-emitting stacked layer includes one or more second, third, fourth, and fifth well layers that have different indium concentrations, such that a C2 indium concentration, a C3 indium concentration, a C4 indium concentration, and a C5 indium concentration are respectively defined, and a relationship of the indium concentrations is C5>C4>C3>C2. The light-emitting stacked layer includes an n-side proximate section, a middle section, and a p-side proximate section along a thickness direction. The third well layer is disposed in the middle section, and the third well layer is disposed between the two second well layers.

Abstract: An active noise cancellation (ANC) method applied to a headset includes obtaining a first group of filtering parameters, and performing noise cancellation using the first group of filtering parameters. The first group of filtering parameters is one of N1 groups of filtering parameters prestored in the headset. The N1 groups of filtering parameters are respectively used to perform noise cancellation on ambient sound in N1 leakage states. The N1 leakage states are formed by the headset and N1 different ear canal environments. N1 is a positive integer greater than or equal to two.

Abstract: Systems, apparatuses, and methods are described for generating unique identifiers. Identifiers may be organized or grouped by different topics. Identifiers may be requested, generated, stored as groups, and may be allocated from those groups based on requests for identifiers to improve the efficiency of one or more computing devices or systems. The size of each group of identifiers may be adjusted.

Abstract: The present disclosure relates to a high-strength steel and a method of manufacturing the same. Slab with specific composition is subjected to a rolling process and a heat treatment process with specific conditions for changing the metallographic structure of the obtained steel. The obtained steel includes at least 95% tempered martensite, and has a high tensile strength and a high yield strength.

Abstract: The present disclosure relates to a moving device, including a body and wheels arranged at a bottom of the body to drive the moving device to move. The wheel includes: a rim; and a tire. The tire is detachably connected to the rim, and includes a first end and a second end detachably butt-joined, such that the tire can be disconnected at the first end and the second end to allow the tire to be detached relative to the rim. When the tire is damaged and needs to be replaced, the tire is disconnected at the first end and the second end so as to be gradually separated from the rim, and thus, a user can replace the tire without detaching any part of the body.

Abstract: An electrochemical device includes a cathode including a cathode current collector, a first cathode active material layer including a first cathode active material, and a second cathode active material layer including a second cathode active material. The first cathode active material layer is disposed between the cathode current collector and the second cathode active material layer, and the first cathode active material layer is formed on at least one surface of the cathode current collector. The first cathode active material layer is firstly formed on the cathode current collector, and the second cathode active material layer is secondly formed on the first cathode active material layer, then the second cathode active material layer and the first cathode active material layer are pressed together.

Abstract: Atomically dispersed platinum-group metal-free catalyst and method for synthesizing the same. According to one embodiment, the catalyst is made by a method in which, in a first step, an Mn-doped ZIF-8 catalyst precursor is prepared by reacting a first solution comprising zinc nitrate hexahydrate and manganese chloride dissolved in an acid/water solution with a second solution comprising 2-methylimidazole dissolved in water. Then, in a second step, the Mn-doped ZIF-8 catalyst precursor is thermally activated, i.e., carbonized, to form an Mn—N—C catalyst. Preferably, the thermal activation is performed in a multistep fashion, first at a lower temperature of about 800° C. and then at a higher temperature of about 1100° C. After carbonization, the catalyst material may optionally be subjected to an absorption process, followed by a second thermal activation. The absorption process may involve dispersing the catalyst material in a solution of manganese chloride and urea in hydrochloric acid and isopropanol.

Abstract: The present disclosure relates to a backlight module and a display device. The backlight module comprises: a lamp panel comprising a first surface and a second surface opposite to each other, the first surface comprising a light source array, and the second surface comprising a light source array driving circuit and an external terminal; a first back plate connected with the lamp panel at a side of the second surface of the lamp panel, and comprising first avoiding openings corresponding to the light source array driving circuit and the external terminal; a second back plate connected with the first back plate at a side of the first back plate away from the lamp panel, and comprising a second avoiding opening corresponding to the external terminal.