Ryotaro Kawashima, Motohiro Kasuya, Miyu Nakazato, Jun Hirayama, Masamichi Nogawa, Shinobu Tanaka, Ikuto Suzuki. Quantitative Sensing of Na+ and K+ Ions in Aqueous Solutions Using Multi-wavelength NIR Spectroscopy. Sensors and Materials, In press. 2025
Masamichi Nogawa, Ikuto Suzuki, Hisashi Naito, Ryotaro Kawashima, Kazuki Watanabe, Shinobu Tanaka, Jun Hirayama. Theoretical Evaluation of Simultaneous Optical Measurement Method for Hemoglobin Concentration, Oxygen Saturation, and Water Percentage in Blood Based on Multi-parameter Optimization. Journal of Science and Technology in Lighting. 2024
由佳 畑中, 郁斗 鈴木, 尚 内藤, 信治 北島, 宣彦 坂井, 恭宜 岩田, 充洋 小川, 志信 田中. Development of a Simple Optical Sensing System of Urea in Spent Dialysate Using Near-Infrared LEDs as Light Source-Preliminary study using FT-IR spectrometer on wavelength selection for detecting urea in spent dialysate -. Iryou kikigaku (The Japanese journal of medical instrumentation). 2024. 94. 5. 504-513
Kawashima R, Suzuki I, Watanabe K, Fukuda T, Nogawa M, Hirayama J. The use of biosignal measurements for circadian clock evaluation. Advances in Health and Disease. (Edited by Lowell T. Duncan) Nova Science Publishers. 2023
R. Kawashima, M. Kasuya, J. Hirayama, M. Nogawa, S. Tanaka, K. Yamakoshi, I. Suzuki. Near-infrared spectroscopic estimation of electrolytes in water-based solution for their sweat-based continuous measurement. Proceedings of 45th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, Paper ID: 1425,. 2023
Y. Hatanaka, I. Suzuki, K. Sanai, M. Nogawa, Y. Nishikawa, H. Naito, A. Ikarashi, M. Ogawa, K. Yamakoshi, S. Tanaka. Simulated analysis assuming a near-infrared LED light source for monitoring components in waste dialysate. Proceedings of the 44th Annual International Conference of the IEEE Engineering in Medicine and Biology Society,. 2022
I. Suzuki, Y. Hatanaka, K. Sanai, M. Nogawa, Y. Nishikawa, H. Naito, A. Ikarashi, M. Ogawa, K. Yamakoshi, S. Tanaka. Near-infrared spectroscopic estimation of urea concentration for determining appropriate duration of hemodialysis treatment. Proceedings of the 43rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society. 2021