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电激励信号频率对红点病苹果采后电学特性影响（Influence of Frequency of Electric Excitation Signal on Dielectric Property of Fuji Apples with Red-dot Disease）
苹果 红点病 电特性 激励信号
2009/11/3
研究了红点病富士苹果采后果实电特性的变化规律，为从电特性角度揭示红点病病害发病的内在机制提供理论参考。运用LCR电子测量仪测定了20℃恒温条件下贮藏70 d的红点病果实在100 Hz、1 kHz、10 kHz、100 kHz和1?MHz频率下复阻抗等电学参数。结果表明，在同一贮藏时间下，随着频率的增加，不论是病果还是正常果其果实的介电常数ε′、复阻抗Z、电抗X和电感Lp值均在减小；果实的Z、X和...
Measurement of Change in Moisture Content during Drying Process Using the Dielectric Property of Foods
non-destructive measurement dielectric property capacitance
2009/6/17
A continuous and non-destructive method for measuring the moisture content of foods during the drying process is proposed. Changes in the dielectric property (capacitance), weight and temperature of s...