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Large scale multicast of video and audio materials over IP networks is becoming increasingly popular and common. These services are bandwidth intensive and normally require stringent QoS requirements. Also with millions of heterogeneous participants involved, it is a tough problem to organize the ne..... [更多]
Photonic band gap (PBG) materials are those periodic composites that possess spectral gaps in the frequency spectrum, in which electromagnetic waves cannot propagate in any direction within the material. Conventional PBG are based on Bragg scattering which limits the size of PBG structures for low-f..... [更多]
Tags: Physics
The present invention proposes a very simple approach for the decoration of carbon nanotubes (CNTs) with silver nanoparticles. CNTs are dispersed in ethylene glycol via ultrasonication, which is heated at 160oC and mixed with silver solution. The resulting silver-CNT nanohybrid comprises of carbon n..... [更多]
Neurotrophins represent a family of proteins which can support the survival and differentiation of neurons from both central and peripheral nervous systems. Their potential use in the treatment of various neurodegenerative diseases is well known. These growth factors exhibit overlapping as well as d..... [更多]
There are many types of bistable liquid crystal displays (LCDs). Among them, the bistable twisted nematic (BTN) LCD has one of the best optical properties with good contrast and brightness. This display relies on adjusting judiciously the cell thickness to liquid crystal pitch ratio to produce the..... [更多]
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