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Rapid on-line non-destructive detection of the moisture content of corn ear by bioelectrical impedance spectroscopy

International Journal of Agricultural and Biological Engineering 2015年第6期8卷 37-45页

作者： Zhao Pengfei Zhang Hanlin Zhao Dongjie Wang Zhijie Fan Lifeng Huang Lan Ma Qin Wang Zhongyi College of Information and Electrical Engineering China Agricultural UniversityBeijing 100083China Modern Precision Agriculture System Integration Research Key Laboratory Ministry of EducationBeijing 100083China Key Laboratory of Agricultural Information Acquisition Technology(Beijing) Ministry of AgricultureBeijing 100083China

Moisture content of corn directly affects its quality and storage time,and the rapid on-line detection of the moisture content of corn ears not threshed or in vivo in the fields is *** of the special shape of corn ear,the rapid,low cost and non-destructive bioelectrical impedance measurement is more suitable for its moisture content *** the four-electrode method with the Agilent E4980A precision LCR meter,the electrical impedance spectroscopies of the sweet corn ears and waxy corn ears at different moisture contents were *** frequency range of the detection was from 20 Hz to 2 MHz and to enhance the contact,the attached-type electrodes were wrapped in cotton soaked with 0.1%NaCl *** impedance data over the frequency range from 300 Hz to 5 kHz were used to obtain the parameters of the bio-impedance Cole-Cole *** results showed a good linear correlation(coefficient of determination R2=0.960)between the equivalent parallel resistance R∞of sweet corn ear and the moisture content value determined by standard chemical *** research proved that the bioelectrical impedance spectroscopy can be used for detecting the moisture content of corn ear.

关键词： moisture content non-destructive detection bioelectrical impedance spectroscopy corn ear

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Diagnostic workup of lymphedema

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Plastic and Aesthetic Research 2019年第10期6卷 15-23页

作者： Zheng-Yun Liang Xiao Long Nan-Ze Yu Jiu-Zuo Huang Department of Plastic Surgery and Reconstructive Surgery Peking Union Medical College HospitalBeijing 100005China

Lymphedema is a chronic and progressive pathological state of tissue swelling caused by congenital or acquired lymphatic ***,physical and laboratory examinations could help to diagnosis>90%lymphedema *** stage lymphedema could be challenging to *** aim of this review is to provide an objective appraisal of current diagnostic methods,such as lymphoscintigraphy,lympho-fluoroscopies,lymphangiography and *** on their respective advantages and weaknesses,and hopefully shed some lights on developing a practical diagnosis modality beneficial to early detection and clinical decision making of lymphedema.

关键词： Lymphedema diagnosis lymphoscintigraphy magnetic resonance lymphangiography indocyanine green tissue dielectric constant bioelectrical impedance spectroscopy

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