Periodic oscillations of Doppler frequency excited by the traveling ionospheric disturbances associated with the Tonga eruption in 2022 by Hiroyuki Nakata, Keisuke Hosokawa, Susumu Saito, Yuichi Otsuka, Ichoro Tomizawa

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Simultaneous observations of equatorial plasma bubbles with an all-sky airglow imager and a HF Doppler sounding system in Taiwan by Hiromi Sejima, Keisuke Hosokawa, Hiroyuki Nakata, Jaroslav Chum, Chien-Hung Lin, Jia-Ting Lin

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Monitoring of equatorial plasma bubbles using aeronautical navigation system: a feasibility study by Keisuke Hosokawa, Susumu Saito, Hiroyuki Nakata, Chien-Hung Lin, Jia-Ting Lin, Pornchai Supnithi, Ichiro Tomizawa, Jun Sakai, Toru Takahashi, Takuya Tsugawa, Michi Nishioka, Mamoru Ishii

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Antibody responses after BNT162b2 vaccination in Japanese geriatric intermediate care facilities by Asae Suita, Satoko Ohfuji, Ayane Kasamatsu, Kyoko Kondo, Hiroyuki Nakata, Tetsuya Kita, Akifumi Deguchi, Mikio Fujimoto, Kazuko Iba, Hideki Sakamoto, Kaori Iwasaka, Noboru Sakamoto, Hikaru Sakamoto, Yoshiko Yodoi, Yasutoshi Kido, Yu Nakagama, Ayako Konishi, Emiko Mukai, Kazuhiro Matsumoto, Tomoka Matsuura, Tetsuo Kase, Hiroshi Kakeya, Wakaba Fukushima, Yoshio Hirota

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