著者

Naoshi KONDO Makoto KURAMOTO Hiroshi SHIMIZU Yuichi OGAWA Mitsutaka KURITA Takahisa NISHIZU Vui Kiong CHONG Kazuya YAMAMOTO

出版者

Asian Agricultural and Biological Engineering Association

雑誌

Engineering in Agriculture, Environment and Food (ISSN:18818366)

巻号頁・発行日

vol.2, no.2, pp.54-59, 2009 (Released:2009-04-04)

参考文献数

14

被引用文献数

2

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As basic research to develop a machine vision system to detect rotten mandarin orange, the extraction and identification of fluorescent substances contained in rotten parts of mandarin orange were conducted, and the excitation and fluorescence wavelengths of the substance were determined. Although it has been reported that damaged orange fruit skins are often fluoresced by UV light, it was suggested that fluorescent substances exist not only in the rotten parts of skins but also the normal parts of skins from this research. The fluorescent substances were extracted from 1kg of mandarin peel, and NMR analysis and mass spectrometry were conducted. From this experiment, it was found that the fluorescent substance was quite possibly heptamethylflavone and that the excitation and fluorescent wavelengths of one of the substances were 360 to 375nm and 530 to 550nm, respectively.

著者

PARK Keumjoo

出版者

Asian Agricultural and Biological Engineering Association

雑誌

Engineering in Agriculture, Environment and Food

巻号頁・発行日

vol.4, no.4, pp.106-111, 2011

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Food waste and poultry manure mixes inoculated with effective microorganisms (EM) were composted by a rotating drum composter under initial moisture conditions of 63-74% (w.b). Composting was performed for 24 hrs using steam from a firewood boiler (450MJ/hr) which heated the composting mass in order to maintain the temperature of the compost between 60 and 80°C. Parameters monitored over this period included the nutrient content, heavy metal content, maturity and stability indices etc. Changes in pH, moisture content, EC (electrical conductivity), NaCl and C/N during composting were consistent with those generally observed in ordinary composting systems. The parameters were influenced by the feedstock materials but not affected by inoculation with EM. The C/N ratios and moisture content of the composts decreased with the composting time. The NaCl content of the food waste compost increased with composting time but was less than 1.0% (d.b). For the finished food waste compost, the compost stability index, based on oxygen uptakes, was less than 0.3 mg/ g VS· hr and the compost maturity index, based on seed germination rates, was greater than 80%. The finished food waste compost could be utilized for land improvement whereas that using food waste amended with poultry manure could not be utilized.

著者

Kittipon APARATANA Daitaro ISHIKAWA Kanvisit MARAPHUM Khwantri SAENGPRACHATANARUG Hitoshi AGARIE Takeshi SHIKANAI Munehiro TANAKA Eizo TAIRA

出版者

Asian Agricultural and Biological Engineering Association

雑誌

Engineering in Agriculture, Environment and Food (ISSN:18818366)

巻号頁・発行日

vol.15, no.2, pp.72-80, 2022 (Released:2022-12-04)

参考文献数

33

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The production of sugar is adversely affected by unhealthy sugarcane, which decreases the yield and quality and is difficult to detect through non-destructive tests. This study aims to accurately differentiate between healthy and unhealthy sugarcane in a laboratory environment using a portable visible near-infrared spectrometer with multivariate analyses. The spectra of 100 each of healthy and unhealthy sugarcane parts are analyzed in this study. The classification rates of the partial least-squares discriminant analysis and support vector machine classification of healthy models are 100 % and 91.9 %, respectively, while the classification rates of unhealthy models are 65.2 % and 78.3 %, respectively. The overall results demonstrate that NIR spectroscopy and multivariate analyses are effective at classifying healthy and unhealthy sugarcane.

著者

Wen-Dien CHANG Tzu-Shiang Lin Joe-Air JIANG Chang-Wang LIU Chia-Pang CHEN Da-Wei LAI Hsu-Cheng LU Chung-Wei YEN Ping-Lang YEN

出版者

Asian Agricultural and Biological Engineering Association

雑誌

Engineering in Agriculture, Environment and Food (ISSN:18818366)

巻号頁・発行日

vol.5, no.3, pp.83-89, 2012-07-06 (Released:2012-07-06)

参考文献数

18

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Intradialytic hypotension (IDH) is a very common complication during hemodialysis. IDH may lead to nausea, vomiting, or anxiety. In some severe cases, it may cause shock or death. Each hemodialysis treatment generally lasts for four to six hours and must be repeated two or three times a week. Currently, the hemodialysis procedure may lead to dangerously low blood pressure when blood pressure is not frequently assessed by medical staff. Therefore, the purpose of this work is to use the technologies of wireless sensor networks (WSN), global systems for mobile communications (GSM), and a MySQL database to develop a PC-based gateway and an automatic monitoring system to collect physiological data during hemodialysis and continuously monitor the IDH status of patients. The clinical definition of IDH during hemodialysis is a decrease in the systolic pressure of at least 20 mmHg and a decrease in the mean arterial pressure (MAP) of at least 10 mmHg. Our system uses a threshold-based algorithm to monitor and record the systolic and mean arterial blood pressure readings. The GSM module is utilized to send medical staff a warning message, and the message is displayed on the monitor if the readings reach a critical point. The experimental results show that this monitoring system is highly reliable.