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Microstructural characterization was performed on plasma-spray coated calcium phosphate and its interface with Ti-6Al-4V using scanning and transmission electron microscopy. The amorphous calcium phosphate phase was found near the coating/substrate interface, usually in between the crystalline hydroxyapatite grains and the Ti-6Al-4V substrate. The presence… (More)
The phenomenon of hiding digital data is as old as the computer systems they reside on. Various incarnations of data hiding have found their way into modern computing experience from the storage of data on out-of-standard tracks on floppy disks that were beyond the reach of the operating system, to storage information in non-data fields of network packets.… (More)
Identifying and defending against port-related vulnerabilities.
What does a disk wiper wipe when a disk wiper does wipe disks?
First principles calculations have been performed to energetically investigate the helium cluster nucleation, formation and growth behavior in the nano-structured ferritic alloy 14YWT. The helium displays strong affinity to the oxygen:vacancy (O:Vac) pair. By investigating various local environments of the vacancy, we find that the energy cost for He… (More)