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The Dualex is an optical sensor developed by Force-A for the assessment of flavonol, anthocyanin, and chlorophyll contents in leaves. The sensor is a result of technology transfer from the CNRS (National Center for Scientific Research) and University of Paris-Sud Orsay.〔(Four innovative start-ups stemming from CNRS at the European Research and Innovation Exhibition 2009 )〕〔(ESE Presentation - Lab. Ecologie, Systématique, Evolution - Technology Transfer )〕 It allows to perform real-time and non-destructive measurements.〔Zoran G. Cerovic. 2012 (New proximal sensors of vegetation: towards a non destructive quantitative estimation of plant constituents ) Ebernburg-Workshop "Leaf Optics"〕 The main applications are plant science and agriculture research. ==Calculated indices== The assessment of polyphenolic compounds in leaves is based on the absorbance of the leaf epidermis through the screening effect it procures to chlorophyll fluorescence. 〔Bilger, W., Veit, M., Schreiber, L., Schreiber, U., 1997. Measurement of leaf epidermal transmittance of UV radiation by chlorophyll fluorescence. Physiologia Plantarum 101, 754-763.〕〔Goulas, Y., Cerovic, Z.G., Cartelat, A., Moya, I., 2004. Dualex: A new instrument for field measurements of epidermal UV-absorbance by chlorophyll fluorescence. Appl. Opt. 43, 4488-4496.〕 The indices calculated by Dualex are: * Anth, for the anthocyanin index * Chl, for the chlorophyll index * Flav, for the flavonols index * NBI, for the nitrogen balance index 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Dualex」の詳細全文を読む スポンサード リンク
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