Abstract: This invention relates to the nano metal material preparation technology field, especially to the preparation method of one kind, of nano-rings. This invention uses polyvinyl pyrrolidone of different molecular weights as surface-protecting agent and dissolves silver nitrate in the low molecular weight polyvinyl pyrrolidone ethylene glycol solvent under frozen conditions. Frozen conditions can slow down or inhibit silver ions from being reduced to zero-valent silver, to generate silver nanoparticles coated and complexed with both low and high molecular weight polyvinyl pyrrolidone. Polyvinyl pyrrolidone of different molecular weight shows different selective absorption of silver, and different stability makes it affect the speed of growth of silver atoms along different crystal faces to different extent, which is better for silver nano-ring production, with higher yield.

Abstract: An immobilized selenium body, made from carbon and selenium and optionally sulfur, makes selenium more stable, requiring a higher temperature or an increase in kinetic energy for selenium to escape from the immobilized selenium body and enter a gas system, as compared to selenium alone. Immobilized selenium localized in a carbon skeleton can be utilized in a rechargeable battery. Immobilization of the selenium can impart compression stress on both the carbon skeleton and the selenium. Such compression stress enhances the electrical conductivity in the carbon skeleton and among the selenium particles and creates an interface for electrons to be delivered and or harvested in use of the battery. A rechargeable battery made from immobilized selenium can be charged or discharged at a faster rate over conventional batteries and can demonstrate excellent cycling stability.

Abstract: An audio signal processing method includes: acquiring audio signals from at least two sound sources respectively through at least two microphones (MICs) to obtain respective original noisy signals of the at least two MICs in a time domain; for each frame in the time domain, using a first asymmetric window to perform a windowing operation on the respective original noisy signals of the at least two MICs to acquire windowed noisy signals; performing time-frequency conversion on the windowed noisy signals to acquire respective frequency-domain noisy signals of the at least two sound sources; acquiring frequency-domain estimated signals of the at least two sound sources according to the frequency-domain noisy signals; and obtaining audio signals produced respectively by the at least two sound sources according to the frequency-domain estimated signals.

Abstract: Provided is a low-molecular-weight holothurian glycosarninoglycan, with the constituent units thereof being a glucuronic acid group, an N-acetaminogalactose group and a fucose group, and a sulfate ester group or acetyl ester group thereof. Glucuronic acid and N-acetaminogalactose are interconnected via ?(1-3) and ?(1-4) glucosidic bonds to form a backbone of a disaccharide repeating structural unit, and a fucose group is connected to the backbone as a side chain. On a molar ratio basis, the ratio of the glucuronic acid group:the N-acetaminogalactose group:the fucose group is 1:(0.8-1.2):(0.6-1.2). In the structure of the low-molecular-weight holothurian glycosaminoglycan, 10-30% of glucuronic acid groups are modified, on the 2-position, with a sulfate ester group, and the rest are hydroxyl groups; and a proportion of 10-30% of fucose groups is modified, on the 2-position, with an acetyl ester group, and the rest are hydroxyl or sulfate ester groups.

Abstract: An immobilized selenium body, made from carbon and selenium and optionally sulfur, makes selenium more stable, requiring a higher temperature or an increase in kinetic energy for selenium to escape from the immobilized selenium body and enter a gas system, as compared to selenium alone. Immobilized selenium localized in a carbon skeleton can be utilized in a rechargeable battery. Immobilization of the selenium can impart compression stress on both the carbon skeleton and the selenium. Such compression stress enhances the electrical conductivity in the carbon skeleton and among the selenium particles and creates an interface for electrons to be delivered and or harvested in use of the battery. A rechargeable battery made from immobilized selenium can be charged or discharged at a faster rate over conventional batteries and can demonstrate excellent cycling stability.

Abstract: Embodiments of the present disclosure provide method and apparatus for access or RAT restriction. A method at a first access management entity of a network comprises determining that a user equipment (UE) is using LTE-M radio access technology (RAT). The method further comprises obtaining access restriction or RAT restriction data associated with the UE, wherein the access restriction or RAT restriction data indicates that LTE-M RAT type is restricted. The method further comprises determining whether the UE using LTE-M is allowed to attach or register to the network based on the obtained access restriction or RAT restriction data associated with the UE.

Abstract: Provided herein are heterocyclic derivative compounds and pharmaceutical compositions comprising said compounds that are useful for inhibiting the growth of gram-negative bacteria. Furthermore, the subject compounds and compositions are useful for the treatment of bacterial infection, such as urinary tract infection and the like.

Abstract: A method for audio and video synchronization, includes: receiving audio data sent by the video player, wherein the audio data includes more than one audio sampling points; obtaining a network delay change between the audio player and the video player, wherein the network delay change refers to a time difference between the network delay monitored for the first time and the network delay monitored for the last time; determining a total amount of audio data to be adjusted according to the network delay change; and adding audio sampling points to the received audio data or deleting audio sampling points from the received audio data according to the total amount of audio data to be adjusted and a preset adjustment strategy, so that the audio player is synchronized with the video player, and playing the added or deleted audio data.

Abstract: A splitable modular doghouse includes: a first doghouse body, a second doghouse body, and locking assemblies. A side of the first doghouse body and a side of the second doghouse body can be operatively and detachably connected through the locking assemblies. The doghouse bodies of the splitable modular doghouse are detachably connected through the locking assemblies, so as to adapt to a body size of a dog. Therefore, it is convenient to replace a damaged doghouse body and thus the cost can be reduced consequently.

Abstract: A notch treatment method for flaw simulation including providing the specimen with the notch, the notch having a re-melt material layer; isolating the notch; and selectively etching the notch to provide an etched surface of the notch; wherein at least a portion of the re-melt material layer has been removed from the notch. In one aspect, there is provided a notch treatment method for flaw simulation including providing the specimen with the notch, the notch having a re-melt material layer, the specimen includes steel or an alloy thereof; isolating the notch; and selectively etching the notch with a first etching solution and a second etching solution to provide an etched surface on the notch; wherein at least a portion of the re-melt material layer has been removed from the notch.

Abstract: Provided herein are heterocyclic derivative compounds of Formula (II), and pharmaceutical compositions comprising said compounds that are useful for inhibiting the growth of gram-negative bacteria. Furthermore, the subject compounds and compositions are useful for the treatment of bacterial infection, such as urinary tract infection and the like.

Abstract: A method implemented by a network device for mobility management in a wireless communication network is provided. The network device is communicatively connected to at least a user equipment in the wireless communication network. The method comprises determining whether the user equipment is in a fast-moving state upon receipt of a tracking area update request from the user equipment. The method further comprises: in response to the user equipment being in the fast-moving state, configuring a tracking area identity list associated with the user equipment to include only a current tracking area identity associated with the user equipment, and paging the user equipment using the tracking area identity list. Accordingly, a network device for mobility management in a wireless communication network is also provided.

Abstract: The present disclosure relates to a method performed by a first network node. The first network node determines which UE category a UE belongs to. The UE category is M or non-BL in CE. The first network node provides UE category information about the determined UE category to a second network node.

Abstract: Methods performed by core network nodes and base stations for sharing error information are disclosed. A method performed by a core network node comprises initiating transmission of an ERROR INDICATION message to a base station connected to the core network node, wherein the ERROR INDICATION message comprises identification information of a wireless device that is the source of an incoming message in which an error has been detected. A method performed by a base station comprises initiating transmission of an ERROR INDICATION message to a core network node connected to the base station, wherein the ERROR INDICATION message comprises identification information of a wireless device that is the source of an incoming message in which an error has been detected. Also disclosed are core network nodes and base stations configured to perform the methods.

Abstract: A method for communications is proposed. The method may comprise transmit a request for a packet data network connection of the terminal device to a network node. The method may further comprise receiving a response to the request from the network node. The response may indicate whether user plane setup is needed for data transfer on the packet data network connection.

Abstract: A method for selection of a core network. The method which can be performed by a first network node comprises receiving a message for a terminal device from a second network node. The message can enable the first network node to determine a category of the terminal device. The method further comprises selecting a core network for the terminal device based at least in part on the category of the terminal device. The terminal device can be served by a dedicated core network selected for the terminal device adaptively, so that network configuration and resource efficiency can be improved.

Abstract: A method in a SCEF is provided. The method comprises receiving a message indicating that non-IP data is to be delivered to a UE. The method further comprises retrieving information associated with a MME serving the UE. The method further comprises transmitting, to the MME, a message triggering establishment of a connection between the SCEF and the MME for delivering the non-IP data. Other devices and methods for connection establishment between MME and SCEF are also provided.

Abstract: Provided herein are heterocyclic derivative compounds and pharmaceutical compositions comprising said compounds that are useful for inhibiting the growth of gram-negative bacteria. Furthermore, the subject compounds and compositions are useful for the treatment of bacterial infection, such as urinary tract infection and the like.

Abstract: A method performed by a network node for restoring a Short Message Service (SMS) service in a connection between User Equipment (UE) and a communications network is provided. The UE is attached to the communications network with Evolved Packet System (EPS) attach and SMS only, via a radio network node, a Visitor Location Register (VLR) Mobile Switching Centre (MSC), and the network node. When receiving information that indicates a restart of the VLR MSC in the connection, network node sends (202) to the radio network node, an indication to trigger the UE to send a Tracking Area Update (TAU) request with SMS only. The network node receives (203) the TAU request with SMS only, triggered by the UE according to the indication sent to the radio network node. The network node then restores (204) the SMS service based on information in the TAU request with SMS only, received from the UE.