The jackrabbit-spi component defines an architectural layer below the JCR API.

jackrabbit - spi组件在JCR API之下定义了一个架构层。

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Two teams of engineers, one funded by the state of Louisiana and one based at the University of California, Berkley, have previously put the blame on the Army Corps of Engineers and on a weak layer of ground below the canal walls.

NPR: Panel's Report Assigns No Blame in Levee Failures

The result is that any coating, such as an antibacterial layer, would be "self-repairing" after small amounts of damage, as the molecular chains just below the damaged layer re-cover the surface.

BBC: Coating heals itself after damage

The eerie light probably came not from the substance itself, but from the boundary between it and the glass layer below.

ECONOMIST: Combinatorial chemistry