- 著者
- Serizawa Koichi Tomimoto Kazuma Miyashita Masayuki Yamaguchi Ryo
- 出版者
- 一般社団法人 電子情報通信学会
- 雑誌
- IEICE Communications Express
- 巻号頁・発行日
- vol.8, no.5, pp.184-189, 2019
- 被引用文献数
- 6
<p>5th generation mobile communications system (5G) is being actively researched and developed. We focus on "Ultra-Reliable and Low-Latency Communications", with the goal of V2V communications in platooning; a highly anticipated function for autonomous driving. V2V direct communications play a very important role in realizing platooning. Studies of V2V direct communications in platooning have found spectrum spreading in excess of the maximum Doppler frequency which depends on frequency and moving speed. This studies the characteristics and phenomena unique to platooning; we find that the direct wave basically has no Doppler shift. However, we show that Doppler shift of up of twice the maximum Doppler frequency is observed although at a weak level, and we clarify the communication environment by various experiments.</p>
- 著者
- Yamaguchi Ryo-taro Hirano-Iwata Ayumi Kimura Yasuo Niwano Michio Miyamoto Ko-ichiro Isoda Hiroko Miyazaki Hitoshi
- 出版者
- American Institute of Physics
- 雑誌
- Applied physics letters (ISSN:00036951)
- 巻号頁・発行日
- vol.91, no.20, pp.203902, 2007-11
- 被引用文献数
- 13
We have developed a method for real-time monitoring of the cell responses to cytotoxicants using Fourier transform infrared spectroscopy with the multiple internal reflection (MIR-FTIR) geometry. To prevent cell damages induced by measurement environments, we have constructed specialized chambers, in which temperature was maintained at (37±0.5) °C and humidified air containing 5% CO2 was supplied. We monitored cell death induced by cytotoxic surfactant Tween20 using MIR-FTIR spectroscopy. It was found that cell death can be monitored by the absorption intensity of amide II band. This result suggests that our method has a potential to be applied for real-time cytotoxicity assay.