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Vegetation concrete is one of the most widely used substrates for slope ecological protection in China. However, there are still some imperfections that are disadvantageous for plant growth, such as high density, low porosity, insufficient nutrient retention ability and so on. In this paper, the effect of wood activated carbon and mineral activated carbon on the physicochemical properties of vegetation concrete is studied. The experimental results show that the activated carbon proportion in vegetation concrete is positively related to the porosity, permeability coefficient, water holding capacity, and nutrient content and retention ability, while it is negatively related to the dry density, water retention ability, cohesive force and internal friction angle. However, it should be noticed that when the proportion exceeds 2%, the average height, aboveground biomass and underground biomass of Cynodon dactylon decrease with increasing proportion of activated carbon. The effect of wood activated carbon is generally more remarkable than that of mineral activated carbon. In addition, according to the research results, the effect of activated carbon on vegetation concrete can last for at least half a year, although it does slowly deteriorate with increasing time. By comprehensive consideration of the current industry standard, previous research results and economical reasoning, the recommended type of activated carbon is wood, with a corresponding suitable proportion ranging between 1 and 2%.

With the fast development of the network, the requirements for the processing speed of routers are greatly improved, which can be satisfied by the powerful parallelism pability of multi-core processors. In order to give full play to the advantages of parallelism of multi-core processors, queue state vectors (QSV) are used. Based on the application of queue state vectors, "window" mode is proposed in this paper to manage the queue state vector. According to theoretical analysis and experimental results, such an optimization approach, can reduce the probability of conflict when multicore paralleling, and significantly improve the rate of packet forwarding.

With the increasing flooding of multimedia information traffic, it is clearly that the content is bound to play a more and more significant role in the future multimedia Internet. Content Centric Networking(CCN), as a typical content-oriented architecture, is designed for efficient content delivery. Therefore, CCN mechanism is extremely appropriate for the explosive content items and well suited to the multimedia Internet. However, future multimedia Internet should not only focus on the diverse content items, but also provide personalized services to meet users' specific demands. In this paper, we propose a user-aware adaptive transmission scheme(UAAT) for content centric multimedia internet, which can allocate appropriate bandwidth and select the best forwarding interface dynamically for requests by differentiating varieties of user's level. We evaluate the UAAT scheme using ndnSIM and the results indicate that the proposed scheme can utilize available bandwidth effectively and work well on level-based priority service.