Abstract: Handshake controller and handshake control method for one or more charging protocols. For example, a handshake controller for one or more charging protocols includes: a port detection unit connected to a plurality of USB ports and configured to generate a detection signal; a port selection unit configured to receive the detection signal and connected to the plurality of USB ports; an interface unit connected to the port selection unit; and a digital handshake unit connected to the interface unit; wherein the port detection unit is further configured to: determine whether a single USB port of the plurality of USB ports is connected to a load device.

Abstract: Provided is a sheet forming thickness control method of an overflow brick, including: S1: obtaining a free flow thickness distribution and a free flow speed distribution of an overflow of a glass on an overflow surface of the overflow brick through simulation; S2: calculating an equivalent drawing speed distribution of an overflow guide plate and a critical equivalent drawing speed of the overflow guide plate; S3: calculating an equivalent drawing thickness distribution and a forming thickness distribution of the overflow of the glass; S4: calculating an extreme thickness difference of a formed glass substrate; and S5: when the extreme thickness difference is greater than a preset threshold, changing current parameters and repeating steps S1 to S4; and when the extreme thickness difference is smaller than or equal to the preset threshold, processing the overflow brick and producing the glass substrate in accordance with the current parameters.

Abstract: A multi-coil coupling-type single-pole four-throw (SP4T) switch includes: an input port and first through fourth output ports; a coupled inductor circuit including inductor coils electrically connected with the input port and the first through fourth output ports; and a transistor-based control circuit including control circuits electrically connected with the first through fourth output ports respectively. The transistor-based control circuit is configured for selecting one of the first through fourth output ports to be conducted with the input port based on level signals of the control circuits, and configuring a load of the selected output port by using the inductor coils connected with the first through fourth output ports and the control circuits connected with the others of the first through fourth output ports.

Abstract: A genetically engineered bacterium and a preparation method and use thereof are disclosed. The genetically engineered bacteria contain a gene encoding ?-1,2-fucosyltransferase, and a gene encoding a protein tag is connected to the gene encoding ?-1,2-fucosyltransferase; the protein tag is MBP, SUMO1, SUMO2 or TrxA, the amino acid sequence of the MBP is shown in SEQ ID NO: 2, the amino acid sequence of the SUMO1 is shown in SEQ ID NO: 3, the amino acid sequence of the SUMO2 is shown in SEQ ID NO: 4, the amino acid sequence of the TrxA is shown in SEQ ID NO: 5. Fermentation with the genetically engineered bacteria can greatly increase the yield of 2?-fucosyllactose compared to the genetically engineered bacteria that only expresses ?-1,2-fucosyltransferase exogenously, and the yield can be more than doubled in a preferred case.

Abstract: The present invention discloses a genetically engineered bacteria, which is E. coli integrated with lysogenic ?DE3, and lacZ gene is completely inactivated, but does not affect exogenous protein expression of the genetically engineered bacteria. The present invention also discloses a method for culturing the genetically engineered bacteria, and a method for preparing human milk oligosaccharides using the same, and use of the genetically engineered bacteria. The genetically engineered bacteria of the present invention can efficiently produce human milk oligosaccharides, such as 2?-fucosyllactose, and have wide industrial application prospects.

Abstract: The invention discloses a genetically engineered bacterium and a method for preparing a fucosylated oligosaccharide using the same. The method includes: transferring a fucosyl group of a donor to an oligosaccharide receptor by a fucosyltransferase heterologously expressed in a genetically engineered bacterium; wherein the donor is a nucleotide-activated donor, the fucosyltransferase has ?-1,2-fucosyltransferase activity; wherein, the fucosyltransferase is selected from one or more of the enzymes corresponding to NCBI Accession Numbers WP_109047124.1, RTL12957.1, MBP7103497.1, WP_120175093.1, RYE22506.1, WP_140393075.1 and HJB91111.1. The preparation method of the invention has high yield, greatly improved substrate conversion rate and product conversion rate, and has the potential to be applied to industrial production.

Abstract: The invention discloses a genetically engineered bacterium and its application in the preparation of sialyllactose. The genetically engineered bacterium has an N-acetylneuraminic acid biosynthesis pathway, includes multiple copies of a gene neuB for encoding sialic acid synthase, and the gene neuB is initiated for expression by a strong promoter. Using the genetically engineered bacteria of the invention to produce sialyllactose has the advantages of high yield and low overall cost.

Abstract: A multi-coil coupling-type single-pole four-throw (SP4T) switch includes: an input port and first through fourth output ports; a coupled inductor circuit including inductor coils electrically connected with the input port and the first through fourth output ports; and a transistor-based control circuit including control circuits electrically connected with the first through fourth output ports respectively. The transistor-based control circuit is configured for selecting one of the first through fourth output ports to be conducted with the input port based on level signals of the control circuits, and configuring a load of the selected output port by using the inductor coils connected with the first through fourth output ports and the control circuits connected with the others of the first through fourth output ports.

Abstract: The present disclosure relates to a shopping trolley, including a support frame and a storage basket. The storage basket includes a first storage basket and a second storage basket, the second storage basket is capable of being placed in the first storage basket, the first storage basket and the second storage basket are slidingly connected through an adjustment mechanism, and the adjustment mechanism is provided with a fixing mechanism. The adjustment mechanism comprises a first connecting rod and a second connecting rod slidably arranged in the first connecting rod, two ends of the first connecting rod are respectively connected to the top and bottom of the first storage basket, and two ends of the second connecting rod are respectively connected to the top and bottom of the second storage basket. It avoids the problem of small items falling, and realizes the simultaneous transportation of smaller and larger items.

Abstract: Disclosed are electronic glass having high liquidus viscosity and a preparation method. The proportions of the raw materials used in the electronic glass are: SiO2: 65.56-68.6%; Al2O3: 10.58-14%; B2O3: 7-11%; SrO: 0.27-3.26%; BaO: 7.20-10.12%; CaO: 0.22-1.22%; MgO: 0-1.05%; MgO+CaO+SrO+BaO<13%; and the liquidus viscosity of the electronic glass is greater than 200,000 poise. The minimum value of the temperature corresponding to a liquidus temperature reduction of 100,000 poise in the electronic glass is 22° C. The electronic glass has a strain point temperature of 670-739° C., a Young's modulus of 70-83 GPa, and a density of 2.38-2.45 g/cm3, the liquidus viscosity is ensured to be higher than 200,000 poise, the electronic glass is well suited to overflow downdraw forming, and a relatively low density value can be obtained.

Abstract: A filter assembly includes a filter housing having a longitudinal axis, the filter housing divided into a first filter chamber and a second filter chamber, a first element bottom endplate, a second element top endplate, an intermediate endplate positioned along the longitudinal axis between the second element top endplate and the first element bottom endplate, a first filter element housed within the first filter chamber and comprising first filter media positioned between the first element bottom endplate and the intermediate endplate, and a second filter element housed within the second filter chamber and comprising second filter media positioned between the second element top endplate and the intermediate endplate.

Abstract: A method includes: obtaining a first image including a foreground, a second image including a background, and soft segmentation of the foreground; and inputting the first image, the second image, and the soft segmentation into an image matting network, and outputting a foreground segmentation of the first image. The image matting network includes at least one stage network that includes a context combining module, a stem block, and a predictor module. The first image, the second image, and the soft segmentation of the foreground are inputted into the context combining module, the context combining module is configured to output a low-order feature and a high-order feature after feature exchange, the stem block is configured to fuse the low-order feature and the high-order feature based on an attention mechanism to obtain a fused feature, and the predictor module is configured to output the foreground segmentation according to the fused feature.

Abstract: A receiver has a first equalizer circuit that includes a first stage having a source degeneration circuit and a trans-impedance amplifier (TIA). The source degeneration circuit includes a resistor coupled in parallel with a capacitor. The TIA includes an embedded variable gain amplifier with a gain controlled by feedback resistors. Each feedback resistor is coupled between input and output of the TIA. In some implementations, the receiving circuit has a second equalizer circuit coupled in series with the first equalizer circuit. The second equalizer circuit includes a first stage having a source degeneration circuit and a TIA. The source degeneration circuit in the second equalizer circuit has a source degeneration resistor coupled in parallel with a source degeneration capacitor and the TIA includes an embedded variable gain amplifier whose gain is controlled by feedback resistors coupled between input and output of the TIA in the second equalizer circuit.

Abstract: A method for building a gaming environment. The method includes accessing a base VR model of a real-world environment from a third party mapping data store, wherein the real-world environment includes a plurality of real-world objects. The method includes augmenting a first object in the base VR model that corresponds to a first real-world object in the real-world environment. The method includes stitching in the first object that is augmented into the base VR model to generate an augmented base VR model. The method includes storing the augmented base VR model to a library data store comprising a plurality of augmented base VR models for use as virtual environments of corresponding gaming applications storing the augmented base VR model to a library data store comprising a plurality of augmented base VR models. The method includes using one or more of the plurality of augmented base VR models to define a virtual environment of a gaming application.

Abstract: A method of manufacturing a media assembly comprises winding a filter media about a center axis into a media roll and cutting the media roll along at least two cut lines and into at least two media packs of at least two media assemblies. The media roll is cut along at least one plane that is parallel to the center axis.

Abstract: A data transmission method and a communication apparatus to improve transmission timeliness. In a wireless local area network, one channel transmission opportunity is obtained by an access point AP through contention. The AP sends service data to a station STA, and the STA feeds back a first data frame in which an error occurs in the service data to the AP. The AP sends scheduling information on a downlink channel to notify the STA of a retransmission resource unit used for retransmission of the first data frame, and retransmits the first data frame on the retransmission resource unit. Correspondingly, the STA receives the first data frame on the retransmission resource unit.

Abstract: Methods and systems are provided for delivering a virtual reality (VR) experience of a real world space to a remote user via a head mounted display (HMD). A method provides for sending a request for the VR experience of the real world space and identifying a viewing location made by the user. The method includes operations for mapping the viewing location to a real world capture system for capturing video and audio at a location that corresponds to the viewing location and receiving real world coordinates for the real world capture system. Further, the method accesses a user profile of the user and receives a video stream of the real world space captured by the real world capture system. The method is able to identify and reskin a real world object with a graphical content element by overlaying the graphical content item in place of the image data associated with the real world object.

Abstract: This application relates to the field of communication technologies, and specifically, to a data transmission method and apparatus. One example method includes: receiving, by a controller, a performance parameter sent by each of the access points, wherein the performance parameter indicates communication performance between the access point that sends the performance parameter and a first station; determining, by the controller based on each received performance parameter, an access point set configured to provide a data transmission service for the first station, wherein the access point set comprises at least one of the plurality of access points; and when the access point set comprises at least two access points, determining, by the controller, a data transmission mode between each of the access points in the access point set and the first station based on the performance parameter sent by each of the access points in the access point set.