Abstract: Embodiments of the present invention provide a physical layer protocol data unit PPDU transmission method and a corresponding PPDU transmission apparatus. Application of the method and apparatus in the embodiments of the present invention enables a receive end to quickly determine the starting position of the feature signal sequence by means of blind detection, and ensures that the receive end quickly completes data processing and status switching.

Abstract: Embodiments of the present invention disclose a data processing method and apparatus, and belong to the field of communications technologies. The method includes: generating a physical layer protocol data unit PPDU, where the PPDU includes a preamble field, a data field, and a middle preamble field, and the preamble in the PPDU includes information used to indicate an insertion frequency of the middle preamble in the data field in the PPDU; and sending the PPDU. The insertion frequency of the middle preamble in the data field is indicated by using a specified field in the preamble. In this way, in different scenarios, the middle preamble may be inserted into the data field at different frequency, thereby reducing overheads of an inserted pilot and improving data transmission performance.

Abstract: Embodiments of the invention provides methods for determining a methylation score of DNA and determining a ctDNA Fraction (CTDF) value. Additional embodiments are as described herein.

Abstract: A buck-boost switching regulator includes: a power switch circuit including an input switch unit and an output switch unit which switch a first terminal and a second terminal of an inductor for buck-boost conversion; at least one low dropout regulator correspondingly coupled to at least one output high side switch in the output switch unit to correspondingly convert at least one low dropout voltage into at least one output voltage; and a bypass control circuit configured to operably generate a bypass control signal according to a conversion voltage difference between the input voltage and the corresponding low dropout voltage; wherein when the corresponding conversion voltage difference is lower than a reference voltage, the bypass control signal controls a corresponding bypass switch to electrically connect the input voltage with the corresponding low dropout node.

Abstract: Disclosed are a next generation sequencing-based detection panel for glioma, a detection kit, a detection method and an application thereof. The detection panel contains glioma-related genes and loci, wherein the glioma-related genes and loci contain SNP locus on chromosome 1, SNP locus on chromosome 19, MGMT, ATRX, H3F3A, ACVR1, CTC, HIST1H3B, MLH1, PLCG1, SMO, AKT1, CTNNB1, HIST1H3C, MSH2, PMS2, TERT, ATRX, DAXX, HRAS, MSH6, PPMID, TP53, BCOR, DDX3X, IDH1, MYC, PTCH1 and the like.

Abstract: The present disclosure provides a new Internet virtual data center system and a method for constructing the same. The new Internet virtual data center system includes: an Internet data explorer to sample and estimate Internet data to generate a data resource distribution map, the data resource distribution map reflects attribute information of Internet data; an Internet virtual resource library to store data resource distribution map and sample data collected by the Internet data explorer; a data resource distribution map management module to manage data resource distribution map; and a data resource guidance service module to generate and provide guidance service for data collection and mining of a data demander according to data resource distribution map. The present disclosure overcomes the blindness and disorder of the big data collection and development of the existing data centers, and avoids waste of resources and energy.

Abstract: A biological reaction apparatus used for biological macromolecules includes a power supply module (1), a control module (2), a liquid processing module (3), a reactor module (4) and a sensor (5); the power supply module (1) includes a direct current power supply (6) and a switch (7); the control module (2) includes a system controller (8), an input device (9) and an output device (10); the liquid processing module (3) includes a valve (11) or a combination of valves (11), a pump (12) or a combination of pumps (12) and sample cells (13); the reactor module (4) includes a reactor (14); the reactor (14) includes a reactor frame (15) and a reactor cavity (16) formed by the reactor frame (15). The apparatus has a simple and practical structure and is easy to operate. In the reactor (14), a very small amount of a reagent is used to achieve a uniform and highly-sensitive reaction.

Abstract: This application provides example data retransmission methods and communication apparatuses. One example method includes receiving a physical protocol data unit (PPDU) by a first device and from a second device, where the PPDU includes a signaling field and a data field, the data field includes retransmitted data and newly transmitted data, the signaling field includes first indication information, or the signaling field comprises the first indication information and second indication information, the first indication information indicates a first modulation and coding scheme (MCS) and a first coding mode that are used for the newly transmitted data, and the second indication information indicates a second MCS and a second coding mode that are used for the retransmitted data. The PPDU is demodulated based on the signaling field.

Abstract: This application provides a method and an apparatus for sensing measurement. In a technical solution of this application, a transmit end of data may send an indication frame to a receive end of the data, where the indication frame may indicate a spatial mapping matrix used by the transmit end of the data to send the data to the receive end of the data. In this way, the receive end of the data can eliminate impact of spatial mapping on channel state information based on the spatial mapping matrix, to obtain actual channel state information, thereby completing sensing, positioning, and the like on an ambient environment or a passive target by using the obtained actual channel state information.

Abstract: This application relates to the field of wireless communication, and in particular, to an orthogonal frequency division multiple access (OFDMA) hybrid transmission method and apparatus. The method includes: An access point may send a trigger frame, to schedule stations supporting different standards to perform OFDMA uplink transmission, where the stations supporting different standards support different bandwidth sizes. The stations receiving the trigger frame send a trigger-based physical layer protocol data unit (TB PPDU) to the access point, where the TB PPDU includes uplink data of the stations supporting different standards, and the stations of different standards may send the uplink data by using RUs located in bandwidths respectively supported by the stations. Therefore, a channel can be fully utilized to improve frequency domain resource utilization.

Abstract: A device on a wireless network generates duration data for determining a duration of a time interval. A transmission is then instructed, by the device, to transmit the duration data and a downlink payload including an aggregated Media Access Control (MAC) layer data unit, the downlink payload being transmitted on first subcarriers. The transmission also includes a trigger that configures the at least one other device on the network to transmit an uplink payload within the time interval, and during at least part of the transmission of the downlink payload, on second subcarriers that are at different frequencies to the first subcarriers.

Abstract: This application provides a sensing method and a communication apparatus. A first device indicates at least one second device to perform a sensing task by using a midamble, and indicates a sensing parameter required by the at least one second device to perform the sensing task. This may enable the at least one second device to perform the sensing task by using the midamble sent by the first device, to implement sensing by using the midamble.

Abstract: Disclosed herein is a system and method for energy generation from salinity gradients using asymmetrically porous electrodes. In certain embodiments, an energy generation system includes at least one pair of asymmetrically porous electrodes positioned within a chamber in selective fluidic communication with a freshwater source (e.g., a river) and a saltwater source (e.g., an ocean). Asymmetry between a first average percent volume per unit pore-width of a first electrode and a second average percent volume per unit pore-width of a second electrode creates differing interfacial potentials between the first electrode and the second electrode when such electrodes are immersed in freshwater and saltwater. By cyclically immersing the electrodes in freshwater and saltwater, energy is harvested from Gibbs free energy from mixing saltwater and freshwater. Such a system does not require a membrane or an external charge source. Methods of generating energy using asymmetrically porous electrodes are also provided.

Abstract: A transmitter sends a PPDU including a signature symbol to a receiver, where a first preset bit in the signature symbol indicates a standard version corresponding to the PPDU and/or a value of each bit in a second preset bit is 0 or 1. After the receiver receives the PPDU, if the standard version corresponding to the PPDU indicated by the first preset bit in the signature symbol in the PPDU is a standard version corresponding to a first PPDU and/or the value of each bit in the second preset bit in the signature symbol is the same as the preset value, the receiver determines that the received PPDU is the first PPDU. the transmitter and the receiver determine, by using the signature symbol in the PPDU, whether the received PPDU is the first PPDU, to identify the first PPDU, so that information in the received PPDU is correctly interpreted.

Abstract: Embodiments of this application provide a channel sounding method and apparatus, and relate to the communication field. The method includes: A station STA receives channel sounding frames sent by a plurality of access points APs; the STA performs channel sounding based on the channel sounding frames to obtain channel state information of each AP; and the STA sends a channel measurement report frame, where the channel measurement report frame includes channel state information of some of the plurality of APs and identifiers of the some APs, and the channel measurement report frame is further used to indicate that the some APs are selected to participate in coordinated transmission. That the channel measurement report frame is used to indicate that an AP is selected to participate in coordinated transmission can not only feedback channel state information but also reduce signaling overheads.

Abstract: This application provides a method for indicating the number of MU-MIMO users and a communications apparatus. According to the method provided in this application, a case in which the number of users supported in the RU whose size is greater than or equal to a 106-tone RU is greater than 8 is indicated. Therefore, communication efficiency is improved. For example, the method may be applied to a WLAN system.

Abstract: Provided herein are compositions and methods for preventing or treating gastrointestinal injury induced by chemotherapy or radiotherapy.

Abstract: The present invention relates to pharmaceutical compositions and a method of inhibiting metastasis using anti-ROR1 antibodies or antigen binding fragments, ROR1 binding peptides and ROR1 vaccines.

Abstract: A wearable optoelectronic sensing device includes a textile layer, a substrate layer, a light emitter, a plurality of light receivers, and a cover layer. The substrate layer is disposed on the textile layer. The plurality of light receivers is disposed on the surface of the substrate layer, formed as an array, and includes a first light receiver and a second light receiver. The light emitter is disposed at a geometric center of the array. A sensing wavelength of the second light receiver is greater than that of the first light receiver. A distance between the second light receiver and the light emitter is greater than a distance between the first light receiver and the light emitter. The cover layer is disposed on the substrate layer and includes a plurality of openings; the position of each corresponds to position of the light emitter and the position of each light receiver.

Abstract: A signaling method and device can support channel puncturing of BW size. Embodiments provide various options for signaling methods, each of which may be suitable for supporting single-user and/or multi-user communication. A wireless network device is suitable for channel puncturing, and can include information regarding the channel puncturing in a preamble of a transmitted packet.