Browne said there was no evidence that fracking itself had caused water pollution in the US, but said there had been "issues to do with the leaking of gas into aquifers as a result of imperfect operations, mainly to do with the cementing of well casings".
In this paper we establish an error model for the incomplete "mark" and imperfect "destroy" operations.
Briegel, H.-J., Dür, W., Cirac, J. I. & Zoller, P. Quantum repeaters: the role of imperfect local operations in quantum communication.
Briegel, H. J., Dür, W., Cirac, J. I. & Zoller, P. Quantum Repeaters: The role of imperfect local operations in quantum communication.
The probability that perfect PM is performed depends on the number of imperfect maintenance operations performed since the last renewal cycle.
Though imperfect, the UN operation in Congo has helped to end a war that killed millions: it should be reinforced immediately, preferably by troops from Europe, not local ones.
The reproducibility of retention times is better in step elution than in gradient elution due to the imperfect synchronization of cyclic operation of proportioning valves in HPLC chromatographs utilizing the so-called low-pressure gradient.
Rather, it is the choice between going it alone or as part of a messy, imperfect collective, requiring co-operation and compromise.
One example is a dynamic relief-demand management model for emergency logistics operations under imperfect information conditions in large-scale natural disasters (81).
The American official acknowledged that intelligence was often imperfect, and said that American operations in the Afghanistan-Pakistan border region reflected a continuing, intensive effort to track down Mr. Zawahiri, Osama bin Laden and their followers.
In the end, humanity has partial, imperfect views of God according to his operations.
