Publications by authors named "J J Ryu"

Introduction: Radiofrequency ablation (RFA) is widely used to treat benign thyroid nodules. While pre-ablation cancer screenings can produce false-negatives, tumor seeding is rare, and aggressive thyroid cancers following RFA have not been reported. We present two cases of potential track seeding after RFA.

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We present the first measurement of the missing energy due to nuclear effects in monoenergetic, muon neutrino charged-current interactions on carbon, originating from K^{+}→μ^{+}ν_{μ} decay at rest (E_{ν_{μ}}=235.5  MeV), performed with the J-PARC Sterile Neutrino Search at the J-PARC Spallation Neutron Source liquid scintillator based experiment. Toward characterizing the neutrino interaction, ostensibly ν_{μ}n→μ^{-}p or ν_{μ}^{12}C→μ^{-}^{12}N, we define the missing energy as the energy transferred to the nucleus (ω) minus the kinetic energy of the outgoing proton(s), E_{m}≡ω-∑T_{p}, and relate this to visible energy in the detector, E_{m}=E_{ν_{μ}}(235.

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Background: Accurate prediction is essential for the effective management of spontaneous pneumothorax (SP). To improve prediction, this study primarily focuses on using simple chest X-rays to predict ipsilateral recurrence and contralateral occurrence of SP.

Methods: All consecutive subjects diagnosed with SP from July 2017 to June 2023 were retrospectively reviewed.

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Eskebornite (CuFeSe) is a I-III-VI semiconductor with a tetragonal crystal structure, known for its intriguing electrical and magnetic properties. However, experimental studies on this material remain scarce. In this study, Ni-doped eskebornite, CuNiFeSe (x = 0.

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