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覆铜板资讯 2014年第6期 35-41页

作者：孟晓玲 Naomi Yone-mura denki kagaku kogyo kabusiki kaisha

本文介绍了新标准JPCA-TMC-LED01S(高亮度LED用电路板)的内容和特点,以及测试方法JPCA-TMC-LED02T(高亮度LED用电路板测试方法)。特别是这一新标准,是一个包含了传统有机树脂型PCB的辐射标准。本文主要介绍了基板导热评价的新方法和新... 详细信息

本文介绍了新标准JPCA-TMC-LED01S(高亮度LED用电路板)的内容和特点,以及测试方法JPCA-TMC-LED02T(高亮度LED用电路板测试方法)。特别是这一新标准,是一个包含了传统有机树脂型PCB的辐射标准。本文主要介绍了基板导热评价的新方法和新标准的优势。

关键词：标准高亮度LED 辐射

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Standardization of New Sliver Probe for Cooling Power Test of Polymer Quenchant

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材料热处理学报 2004年第5期25卷 447-452页

作者： Hideo YOKOTA Katsumi ICHITANI Kazuyoshi YAMAMOTO Hiroyuki IKUMI Yasufumi SUGIURA Michiharu NARAZAKI Nippon Oil Corporation Yokohama JapanIdemitsu Kosan Co. Ltd. Chiba JapanDaido Chemical Industry Co. Ltd. Osaka JapanSanshin Kagaku Kogyo Co. Ltd. Tokyo JapanNippon Grease Co. Ltd. Osaka JapanUtsunomiya University Utsunomiya Japan

Technical committee for Japanese industrial standard of heat treating oils has studied on the new method for testing cooling power of aqueous quenchants. This method employed the cooling curve test of a new sliver rod probe, which has a metal-sheathed thermocouple at its geometrical center. The experimental study has clarified that this probe has the higher sensitivity and excellent durability. In order to standardize this probe for cooling power test of aqueous quenchants, the repeatability and reproducibility of test results etc. have been studied. D.O.P. (Di-2-ethylthexyl Phthalate) was used as reference quenching fluid for initial calibration and for periodic calibration verification of the probe and system. In addition, 10% brine was used to check the response capability of the probe and system to the sudden change of temperature. These procedures are established according to the experimental investigation. This new test method is going to be built in the revised version of JIS K 2242 "Heat treating oils" as the cooling power test method for aqueous quenchants.

关键词：聚合物淬火剂冷却动力试验冷却曲线银探测器

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Study on Photocatalytic Degradation of Organic Dye by Titanium Dioxide Nanotube Array

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Agricultural Biotechnology 2016年第6期5卷 50-52页

作者： Huabin HUANG Wei GU Zhixia ZHUANG Xiaoru WANG Xiamen Huaxia Uiversity Department of Inspection Science and TechnologyXiamen 361024China Tokyo denki kagaku Xiamen Branch Xiamen 36102China College of Chemistry and Chemical Engineering Xiamen UniversityXiamen 361005China

Titanium based titanium dioxide （TiO2） nanotube arrays were prepared by electrochemical oxidation method, their microstructures were characterized, and the effects of sintering temperature and initial dye concentration and pH value on degradation performance of TiO2 nanotubc arrays wcrc investigated with methyl orange as a degradation object. The results showed that TiO2 nanotube arrays prepared by sintering at 500 ℃ exhibited good morphology and the highest photocata- lyric degradation efficiency; the degradation efficiency of the TiO2 nano material （500 ℃ ） to high concentration dye was higher than that to low concentration dye; the TiO2 nanotube array （500 ℃ ） exhibited higher degradation efficiency on dye solution at the pH of 3 than on that at the pH of 5.77 ; and the degradation efficien- cy of the TiO2 nanotube array （500 ℃） to 10 mg/L methyl orange solution （pH =3） reached 85.2%.

关键词： Titanium dioxide Nanotube array Photocatalytie Organic dyes

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Improvement of the Assay Method for Steviol Glycosides in the JECFA Specifications

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American Journal of Analytical Chemistry 2013年第4期4卷 190-196页

作者： Atsuko Tada Kyoko Ishizuki Junichi Iwamura Hirohisa Mikami Yoshiko Hirao Isao Fujita Takeshi Yamazaki Hiroshi Akiyama Yoko Kawamura Laboratory of Creative Science Co. Ltd. Misonocho Japan Morita kagaku kogyo Co. Ltd. Osaka Japan National Institute of Health Sciences Tokyo Japan Shimadzu Corporation Kyoto Japan

Steviol glycosides are natural sweetener constituents found in the leaves of Stevia rebaudiana Bertoni (Asteraceae). The specifications for steviol glycosides were established by the Joint FAO/WHO Expert Committee on Food Additives (JECFA) in 2008, although there was a call in the following year for the modification of this assay method to enable the determination of nine steviol glycosides rather than just seven. In response, based on a proposed method by the Japan Stevia Association, we developed an improved method by changing the HPLC conditions and including the use of an octadecylsilyl column instead of an amino-bonded column to enable the rapid and reliable determination of the nine steviol glycosides by an isocratic HPLC-UV method. With the developed method, the nine steviol glycosides can be separately determined, and identified using individual reference chemicals as standards, unlike the previous identification method, which was based on the relative retention times. In addition, the single stevioside quantification standard was replaced with both stevioside and rebaudioside A quantification standards. Importantly, the validation of the developed method was successful. The limits of quantification for the nine steviol glycosides were between 0.2% and 0.6%. The developed assay method for the nine steviol glycosides was proposed to JECFA and adopted as the revised assay method for the steviol glycosides specifications at its 73rd meeting in 2010.

关键词： Steviol Glycosides Stevioside Rebaudioside A Reversed-Phase HPLC JECFA Specifications

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