著者

南戸 秀仁

出版者

日本放射線安全管理学会

雑誌

日本放射線安全管理学会誌 (ISSN:13471503)

巻号頁・発行日

vol.8, no.1, pp.7-14, 2009 (Released:2011-11-30)

参考文献数

32

著者

南戸 秀仁

出版者

社団法人 におい・かおり環境協会

雑誌

におい・かおり環境学会誌 (ISSN:13482904)

巻号頁・発行日

vol.37, no.3, pp.154-163, 2006 (Released:2006-11-16)

参考文献数

32

被引用文献数

1

---

21世紀は,「かおり」の時代だという.「におい」や「かおり」の文化は,人類文明とともに築き上げられ,食物に香味と心に豊かさを与えてきたが,「におい」や「かおり」はいつも我々の身の回りに存在して,常に我々の生活と深くかかわっているにもかかわらず,空気と同様に,忘れられがちな存在で,しかもわからない面が多い.このような「におい」や「かおり」を,人間や犬に代わって検知をする「におい」センサーシステム,すなわちエレクトロニックノーズ(e-Nose)の研究開発が活発化してきている.本稿では,このエレクトロニックノーズシステムの開発現状について概観するとともに,そのコア技術であるケモセンサーの原理・特徴およびセンサーシステムの応用分野について言及する.

著者

南戸 秀仁 宮本 由香 竹井 義法 平澤 一樹 遠藤 和弘

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌. E, センサ・マイクロマシン準部門誌 = The transactions of the Institute of Electrical Engineers of Japan. A publication of Sensors and Micromachines Society (ISSN:13418939)

巻号頁・発行日

vol.133, no.10, pp.307-311, 2013-10-01

参考文献数

7

被引用文献数

1

---

The dependence of radiophotoluminescence (RPL) and photoluminescence (PL) properties on x-ray irradiation dose and heat-treatment after irradiation was investigated for Ag⁺-activated phosphate glass, which is practically used as glass dosimeter for individual monitoring of ionizing radiation. The RPL intensity was increased with increasing x-ray irradiation dose, while the PL intensity was oppositely decreased with x-ray dose. The glass exhibited the vice versa tendency between the PL and RPL changes for heat-treatment at 250&deg;C after x-ray irradiation, that is, the PL intensity was increased with annealing time, while RPL was decreased with annealing time. These results strongly support that the luminescence center of the PL is Ag⁺ and the centers of yellow RPL and blue RPL are Ag²⁺ and Ag⁰, respectively, which has been proposed in previous report. In addition, annealing temperature at 250&deg;C for 40 min made it possible to save much energy and time required for recovering the used glass dosimeter to initial condition before x-ray irradiation.<br>It was also found from the dose dependence of the RPL intensity that the RPL intensity was saturated around higher dose region than about 15Gy, which means that there is no linearity between RPL intensity and radiation dose in high dose region.

著者

新保 達也 東野 翼 大薮 多可志 木村 春彦 南戸 秀仁

出版者

The Institute of Electrical Engineers of Japan

雑誌

電気学会論文誌. E, センサ・マイクロマシン準部門誌 = The transactions of the Institute of Electrical Engineers of Japan. A publication of Sensors and Micromachines Society (ISSN:13418939)

巻号頁・発行日

vol.126, no.7, pp.370-375, 2006-07-01

被引用文献数

5 2 1

---

Plant can recognize the environmental factors, for example temperature, humidity, atmospheric pressure and light intensity. Humans can identify the capabilities by measuring the plant bioelectrical potential. It can also recognize the breezing wind. Plants can be regarded as an environmental sensor by using the potential. In this study, the bioelectrical potential characteristic to the wind grade was examined. As for the results, the correlation between the characteristic and the grade was derived. The correlation coefficient was very high. The integrated value for the potential was adopted to derive the relation. Plant can identify the wind intensity by adopting the value. It became obvious that plant has higher capabilities to sense the environmental factors not only temperature, humidity and light intensity but also wind intensity. The application field of plant will spread by using these results.

著者

参沢 匡将 竹井 義法 南戸 秀仁 阿部 孝司 木村 春彦

出版者

The Institute of Electrical Engineers of Japan

雑誌

電気学会論文誌. E, センサ・マイクロマシン準部門誌 = The transactions of the Institute of Electrical Engineers of Japan. A publication of Sensors and Micromachines Society (ISSN:13418939)

巻号頁・発行日

vol.126, no.3, pp.107-113, 2006-03-01

被引用文献数

2

---

Many kinds of chemical sensors have been developed to detect various air-pollutants. Generally sensor systems are composed of plural chemical sensors and a computer, and the systems can derive kinds of pollutants, densities of the pollutants, and various risks for environments and humans. Regarding the research of sensor systems, there are literatures about a sensor agent, which regards a sensor as an agent, and a utility mobile robot which attaches odor sensors. In these systems, it is necessary that observed results output by the sensors are exactly analyzed with information processing; especially, it is important to recognize the occurrence of events such as outbreaks of odor, however, this kind of recognitions are still not enough and it does not mean that the systems can recognize all the environmental events. In this research, odor sensors are treated and generally odor sensors are designed modeling functions of human nose. Hence, as well as odor sensors, we aim improving the accuracy of environmental recognitions using an odor sensor system attaching an information processing function according to human senses. In addition, we show the usefulness of the proposed system comparing with a conventional technique.