To eliminate thermal stress and cracks in the process of laser cladding, a kind of bioceramic coating with gradient compositional design was prepared on the surface of Ti alloy by using wide-band laser cladding. And e...To eliminate thermal stress and cracks in the process of laser cladding, a kind of bioceramic coating with gradient compositional design was prepared on the surface of Ti alloy by using wide-band laser cladding. And effect of Y2O3 content on gradient bioceramic composite coating was studied. The experimental results indicate that adding rare earth can refine grain. Different rare earth contents affect formation of HA and β-TCP in bioceramic coating. When the content of rare earth ranges from 0.4% to 0.6%, the active extent of rare earth in synthesizing HA and β-TCP is the best, which indicates that “monosodium glutamate” effect of rare earth plays a dominant role. However, when rare earth content is up to 0.8%, the amount of synthesizing HA and β-TCP in coating conversely goes down, which demonstrates that rare earth gradually losts its catalysis in manufacturing HA and β-TCP.展开更多
针对当前云网络超宽带存储难以实现流量的分流,且存储过程中存在严重的存储效率低下及存储时延过高等问题,提出了一种基于海量存储云调度机制的云网络数据超带宽存储算法。采用周期调度及梯度优化方式,且综合考虑数据存储中使用强度,最...针对当前云网络超宽带存储难以实现流量的分流,且存储过程中存在严重的存储效率低下及存储时延过高等问题,提出了一种基于海量存储云调度机制的云网络数据超带宽存储算法。采用周期调度及梯度优化方式,且综合考虑数据存储中使用强度,最小传输粒度等数字特征,对数据存储过程中的指纹梯度进行优化,且将该梯度引入到数据传输过程中,成功地实现了数据的流量分离,提高了数据存储效率。仿真实验表明,与当前广泛使用的超线性存储调度算法(super linear memory scheduling algorithm,SLMS)相比,本文算法的存储效率更高,能够在流量分离的前提下显著降低存储时延。展开更多
基金Project supported by Governor's Foundation of Guizhou Province (2004-07)
文摘To eliminate thermal stress and cracks in the process of laser cladding, a kind of bioceramic coating with gradient compositional design was prepared on the surface of Ti alloy by using wide-band laser cladding. And effect of Y2O3 content on gradient bioceramic composite coating was studied. The experimental results indicate that adding rare earth can refine grain. Different rare earth contents affect formation of HA and β-TCP in bioceramic coating. When the content of rare earth ranges from 0.4% to 0.6%, the active extent of rare earth in synthesizing HA and β-TCP is the best, which indicates that “monosodium glutamate” effect of rare earth plays a dominant role. However, when rare earth content is up to 0.8%, the amount of synthesizing HA and β-TCP in coating conversely goes down, which demonstrates that rare earth gradually losts its catalysis in manufacturing HA and β-TCP.
文摘针对当前云网络超宽带存储难以实现流量的分流,且存储过程中存在严重的存储效率低下及存储时延过高等问题,提出了一种基于海量存储云调度机制的云网络数据超带宽存储算法。采用周期调度及梯度优化方式,且综合考虑数据存储中使用强度,最小传输粒度等数字特征,对数据存储过程中的指纹梯度进行优化,且将该梯度引入到数据传输过程中,成功地实现了数据的流量分离,提高了数据存储效率。仿真实验表明,与当前广泛使用的超线性存储调度算法(super linear memory scheduling algorithm,SLMS)相比,本文算法的存储效率更高,能够在流量分离的前提下显著降低存储时延。
