| http://www.w3.org/ns/prov#value | - Accordingly, there is a need for a compact, real time, battery operated, low power, low noise, high stability, miniaturized chemical sensor array which can detect changes in mass due to molecular contamination on the order of 10???11 to 10???13 g-cm???2 or less, and chemical concentrations in the parts per million to parts per trillion range.
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