Xiao-tong Chen

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Low-loss planar and channel waveguides in Pr<sup>3+</sup> - doped yttrium orthosilicate single crystals were fabricated using 6-MeV oxygen ion implantation. The fabricated surface guiding structure(More)
OBJECTIVE To compare the efficacy of preemptive epidural analgesia combined with postoperative epidural analgesia, postoperative epidural analgesia alone and intravenous analgesia for postoperative(More)