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This study was carried out to investigate the anti‐tumor effect and mechanism of hiporfin‐mediated photodynamic therapy (hiporfin‐PDT) in osteosarcoma. We found that hiporfin accumulated mainly in the cytoplasm of osteosarcoma cells in a time and concentration‐dependent manner. Hiporfin‐PDT inhibited the proliferation, induced apoptosis and produced cell cycle arrest at G2M in osteosarcoma cell lines...
In this paper, the technology of trusted boundary based on port trust value is discussed. When IP phones are connected to the existing switch-based campus area network, PC is connected to the access port of IP phone. To avoid IP phone is disconnected from the network and PC is directly into the switch port, trusted boundary based on port trust value is applied. In an IP PBX, trusted mode or untrusted...
In this paper, the technology of auxiliary VLAN is discussed. When IP phones are connected to the existing switch-based campus area network, the data traffic and voice traffic are present on the VLAN at the same time. To avoid a significant reduction on the quality of the VoIP traffic, the voice traffic is separated from the data traffic on an auxiliary VLAN. In an IP PBX, there are three frame types...
Firstly, the paper takes National Topographic Database by assuming DEM (digital elevation model) with 1:250,000 scale as a data source, extracts simulated drainage network by using Arc Hydro Tools 9.2. Secondly, a new coding method is presented, which can reflect the topology of drainage network. It becomes easily to locate any reach of drainage network directly and operate the topology of drainage...
The SIP-based VoIP system is build on the IP network, so it is affected by the IP network security problem. SIP-based VoIP system has many security problems because of the security mechanism of VoIP system and other external factors. These effects relate to the following three aspects: confidentiality, integrity and availability. This paper analyzed the mechanism of VoIP system and the components...
In this paper, the technology of MAC-based VLANs which adapts to mobile office in campus area network is discussed. VLANs offer a number of advantages over traditional LANs. There are mainly two types of VLANs used by campus area network: Port-based VLANs and MAC-based VLANs. The characteristics of MAC-based VLANs are illuminated and this type VLANs is the best choice of campus area network because...
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