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5篇 您的检索式:作者名="Martial Geiser"
    题名 作者 年代 出处 被引量
1电化学法快速测定茶多酚含量的研究显示文摘基于电化学循环伏安法,讨论了3种低成本自制工作电极——银电极、碳糊电极和玻碳电极在茶多酚含量测定应用上的可行性。通过分析茶多酚在电极表面的氧化还原行为,发现所制银电极不适宜检测茶多酚,碳糊电极、玻碳电极的氧化电流峰值与茶多酚含量有良好的线性关系。所制玻碳电极测定绿茶茶样中的茶多酚含量的重复性和准确性较碳糊电极好。与国标方法相比,碳糊电极、玻碳电极检测茶多酚所需时间大大缩短。结果表明,电化学方法可应用于茶多酚含量的快速测定,从而为快速、低价、便捷检测茶多酚提供一条新思路。朱丹 须海荣 Martial Geiser Mario Bernabei Wilfried Andlauer 2011茶叶科学2011,31,3:16
2双波长光学低相干干涉术用于血氧饱和度测量的数值分析显示文摘提出了采用双波长光学低相干干涉仪(Optical low coherence interferometer,OCI)来测量人体视网膜血管中血氧饱和度(Oxygen Saturation,SO2)的方法.详细阐述了双波长光学低相干干涉术用于血氧饱和度测量的基本原理,并分析了OCI中双波长的选择原则.基于内径为200μm的毛细玻璃管的简易人眼视网膜血管模型,分别模拟了光源中心波长为680 nm和820 nm时血液血氧饱和度由40%提高到60%时对应干涉信号的变化.数值分析表明,要判别20%的血氧饱和度变化,OCI系统灵敏度至少要达到70 dB.王玲 丁志华 黄丽娜 Martial Geiser 李娜 2007光子学报2007,36,B06:2
3Strehl ratio and aberration balancing显示文摘Geiser Martial 1991J Opt Soc Am1991,8,:1
4Petzval curvature versus image quality for the Cooke triplet显示文摘 1990Optical Engineering1990,29,3:1
5A miniaturized system for measurement of the refractive index of sub-microliter liquid显示文摘This study introduced the research and development of a portable and miniaturized system for the measurement of the refractive index of sub-microliter liquid based on a microfluidic chip. A technical method of double-beam interference, was proposed for use in the measurement. Based on this, by using a laser diode as a light source,changes in the refractive index were calculated by utilizing a complementary metal–oxide–semiconductor to detect the movement of interference fringes of the liquid. Firstly, this study simulated the effects of influencing factors on the interference infringes of two Gaussian beams, such as their spot sizes, distance between two beam spots, and detection range. Secondly, this research introduced the system design and construction of the doublebeam interference method and analyzed the results of refractive index tests on sub-microliter aqueous glucose solutions with different concentrations. The measurement accuracy reached 10^(-4) refractive index units. This system has a compact structure and is rendered portable by using batteries for its power supply. The entire system is designed to be a double Z-shaped structure with a length of about 15 cm, a width of 5 cm, and a height of about 10 cm. It can be used to measure changes in the refractive index of sub-microliter to nanoliter liquids based on the use of a microfluidic chip.陈明惠 贾文宇 何锦涛 Martial Geiser 郑刚 2019Chinese Optics Letters2019,17,4:0
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