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The preservatives benzoic acid and sorbic acid are generally quantified with separation techniques, such as HPLC or GC. Here we describe a new method for determining these compounds in processed food samples based on a narrowness of the UV–visible spectral band width with derivative processing. It permits more selective identification and determination of target analytes in matrices. After a sample...
We performed molecular simulation to investigate the pattern formation in electron beam lithography. We introduced the effect of electron exposure by the chain scission of the polymer molecules. In the development process, the small segments of polymer molecules are removed from the resist structure. Our present simulation reveals the typical structure of atomic scale line edge roughness, i.e., the...
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