The invention relates to methods and apparatus for analyzing diamond colors by measuring the spectrum of light that passes through a cut diamond. A diamond is submerged in water or an optically clear liquid, and a light from a diffused daylight-approximating source is shot through the table facets o.....
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The degradation of contaminant, PAHs is very ineffective and slow. Beside, during soil composting process, the toxicity of PAHs significantly increased with its increased molecular weight. More difficulty, the biodegradation of molecules containing five or more benzene rings of PAHs molecules is ver.....
[Detail]
