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A new method based on link character was proposed for DDoS attacks detection.Maximum likelihood estima-tion was used to estimate the distribution of link character.SOM neural network is used for link activity profile learning and anomaly link detection.Experiment results indicate that the technique is effective and of a definite practicability.It has a further develop potential for DDoS attacks detection.

To evaluate the impact of DCAcAm on zebrafish gill, we measure the responses of antioxidant enzyme (superoxide dismutase, SOD), lipid peroxidation (malondialdehyde, MDA), ATPase (Na+/K+‐ATPase and Ca2+/Mg2+‐ATP) and histopathological changes of gill in adult zebrafish, after exposed to different concentrations of DCAcAm (0, 1, 10, 100, and 1000 μg L−1) for 30 days. Results indicated that DCAcAm first increased and then decreased SOD activity, and DCAcAm also lowered the activities of Na+/K+‐ATPase and Ca2+/Mg2+‐ATPase. These results indicated that high affinity of DCAcAm probably be a main factor, which can damage the structures of enzymes, thereby inhibiting the SOD and ATPase activities. Besides, histopathological investigation results also manifested that chronic exposure to DCAcAm can damage the gill tissues, disrupting the normal function of gills. We conclude that chronic exposure to DCAcAm was harmful to organisms, not only influence gill function, but also further cause damage on the gill tissues. [ABSTRACT FROM AUTHOR]

A series of carborane-containing solvent-free liquid silicone resins were synthesized by a hydrosilylation reaction with silicone resins containing different vinyl contents and 1,7-bis (3-hydridotertramethyldisiloxanyl)-m-carborane (HCB). The structure and thermal properties of the silicone resins were characterized by nuclear magnetic resonance (NMR), Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), thermal gravimetric analysis (TGA), as well as dynamic mechanical analysis (DMA), respectively. The cured silicone resins containing carborane showed better thermal stability and thermal oxidative stability than its carborane-free counterpart. DMA showed that cured silicone resins had high tan δ value thus providing good prospects for damping material applications. Furthermore, adhesive properties of silicone resin adhered to stainless steel at various conditions were evaluated by lap shear strength (LSS) test. It was found that the LSS of adhesive containing carborane was higher than that of carborane-free adhesive at per testing temperature. The results also showed that the bonding strength of adhesive increased with increasing carborane content. [ABSTRACT FROM PUBLISHER]