A new type of injectable premixed bone cement consisting of nano-hydroxyapatite (n-HA) and polyamide 66(PA66) composite is investigated. This cement can be hand
Certificate Authority (CA) is the core of public key infrastructure. However, the traditional structure of CA is either hierarchical or reticular, and none of t
In order to support enterprise integration, a kind of model construct based enterprise model architecture and its modeling approach are studied in this paper. F