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Figure 10


Fig. 10. Recovery of formic acid (FA) treated specimens. Both graphs compare a formic acid treated specimen with the same specimen returned to water. Recovery traces represent 10 stress-strain cycles of B. canaliculatum WECB specimens formerly tested following 1 h incubation in 44% (A) and 88% formic acid (B), respectively, were now returned to deionized water and allowed to equilibrate for 1 h before testing. The specimen from 44% FA appears to have recovered its native behavior. The 88% FA treated specimen recovers somewhat (bimodal behavior appears to be present), but still deviates from native properties. Incubation times approaching 30 min were apparently fully recoverable at 88% FA.





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