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Take the design of a performance evaluation system for the R&D staff of a biological institute as an example, we used the use case diagram, package diagram, class diagram, deployment diagram, sequence diagram and activity diagram in the analysis and design of an object-oriented programming, which makes the system analysis and modeling much simpler and(More)
An Fe3O4-Fe@BCNT composite was successfully synthesized via detonation of a mixture of hexogen (C3H6N6O6) and ferrocene (C10H10Fe), in which bamboo-like carbon nanotubes encapsulating iron nanoparticles attached to Fe3O4 flakes (up to 58.1%) were formed. In the detonation process, hexogen was used to generate high temperature and high pressure, while(More)
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