Abstract: Disclosed herein is a core-shell nanoparticle exhibiting aggregation induced emission (AIE) properties. According to the embodiments of the present disclosure, the core-shell nanoparticle comprises a core and a shell layer encapsulating the core, in which the core comprises a polymeric matrix and one or more tetraphenylethane (TPE) embedded in the polymeric matrix. Preferably, the polymeric matrix is made of a hydrophobic polymer, and the shell layer is made of a hydrophilic polymer. Also disclosed herein are methods of producing the core-shell nanoparticle, and methods of detecting an extracellular polymeric substance (EPS) produced by a microorganism via using the core-shell nanoparticle.

Abstract: Fluorescent probes for silver ion detection include organic, water-soluble compounds having aggregation-induced emission (AIE) characteristics. The probes can sense or detect silver ions through aggregation or a precipitation reaction between the silver ions and the organic compounds which induces fluorescence. The compounds are acidic, soluble in aqueous phase, and provide low background fluorescence in aqueous solutions.

Abstract: A first VXLAN Tunnel End Point (VTEP) determines a simulation packet for simulating a service forwarding path of a service packet forwarded from a first Virtual Machine (VM) accessing the first VTEP to a second VM accessing a second VTEP when the service packet sent by the first VM does not reach the second VM. A packet character parameter of the simulation packet is the same as a packet character parameter of the service packet. The first VTEP calculates the packet character parameter of the simulation packet to determine a User Datagram Protocol (UDP) source port number, performs VXLAN encapsulation for the simulation packet according to the determined UDP source port number and a VXLAN tunnel identity in a local register entry matching with the simulation packet, and forwards the simulation packet with the VXLAN encapsulation via a VXLAN tunnel corresponding to the VXLAN tunnel identity.

Abstract: A first VXLAN Tunnel End Point (VTEP) determines a simulation packet for simulating a service forwarding path of a service packet forwarded from a first Virtual Machine (VM) accessing the first VTEP to a second VM accessing a second VTEP when the service packet sent by the first VM does not reach the second VM. A packet character parameter of the simulation packet is the same as a packet character parameter of the service packet. The first VTEP calculates the packet character parameter of the simulation packet to determine a User Datagram Protocol (UDP) source port number, performs VXLAN encapsulation for the simulation packet according to the determined UDP source port number and a VXLAN tunnel identity in a local register entry matching with the simulation packet, and forwards the simulation packet with the VXLAN encapsulation via a VXLAN tunnel corresponding to the VXLAN tunnel identity.

Abstract: In a method for fast switching traffic in a hierarchical virtual private LAN service for use in a User-facing Provider Edge (UPE) device, a shared logic port number is assigned to each pair of primary pseudo wire and standby pseudo wire. A MAC address associated with a pair of primary pseudo wire and standby pseudo wire is associated with a logic port number shared by the primary pseudo wire and standby pseudo wire. Filling, in a logic port table, for each logic port entries containing: a logic port number, a primary pseudo wire inbound-label, a standby pseudo wire inbound-label, a primary pseudo wire outbound-label, a standby pseudo wire outbound-label and information of leaving a public network. Setting the corresponding information of leaving the public network in the logic port table depending upon whether the primary pseudeo wire is active or inactive.

Abstract: In a method for fast switching traffic in a hierarchical virtual private LAN service for use in a User-facing Provider Edge (UPE) device, a shared logic port number is assigned to each pair of primary pseudo wire and standby pseudo wire. A MAC address associated with a pair of primary pseudo wire and standby pseudo wire is associated with a logic port number shared by the primary pseudo wire and standby pseudo wire. Filling, in a logic port table, for each logic port entries containing: a logic port number, a primary pseudo wire inbound-label, a standby pseudo wire inbound-label, a primary pseudo wire outbound-label, a standby pseudo wire outbound-label and information of leaving a public network. Setting the corresponding information of leaving the public network in the logic port table depending upon whether the primary pseudo wire is active or inactive.