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Crystallization by Green-laser Annealing for Three-dimensional Device Application
Yumi Kawamura,Koji Yamasaki,Takehiko Yamashita,Yuta Sugawara,Yukiharu Uraoka,Mutsumi Kimura 한국물리학회 2010 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.56 No.5
We report the crystallization of multilayer polycrystalline Si (poly-Si) thin films by green laser annealing with potential applications to three-dimensional devices. We investigated single-, doubleand triple-layer poly-Si thin films crystallized by GLA. The crystallinity of the green-laser-annealed (GLA) poly-Si films was improved by employing a multilayer structure; larger crystal grains were obtained at a lower power than the case of a single layer. We applied the GLA multilayer poly-Si thin films to the fabrication of thin film transistors (TFTs) and thin-film photodiodes. Through a comparison of their performance, we demonstrated the superiority of multilayer crystallization.
Mizuho Yamazaki-Takai,Yumi Saito,Shoichi Ito,Moe Ogihara-Takeda,Tsuyoshi Katsumata,Ryo Kobayashi,Shuta Nakagawa,Tomoko Nishino,Namiko Fukuoka,Kota Hosono,Mai Yamasaki,Yosuke Yamazaki,Yuto Tsuruya,Aris 대한치주과학회 2024 Journal of Periodontal & Implant Science Vol.54 No.2
Purpose: This study investigated the relationship between the number of days that hospital visits were postponed and changes in clinical parameters due to the spread of coronavirus disease 2019 (COVID-19), after the Japanese government declared a state of emergency in April 2020. Methods: Regarding the status of postponement of appointments, we analyzed the patients who had visited the Nihon University Hospital at Matsudo for more than 1 year for supportive periodontal therapy (SPT) and classified them into low-, moderate- and high-risk subgroups according to the periodontal risk assessment (PRA). Clinical parameters for periodontal disease such as probing depth (PD), full-mouth bleeding score (FMBS), full-mouth plaque score, periodontal inflamed surface area (PISA), and periodontal epithelial surface area (PESA) were analyzed in 2 periods, from October 2019 to March 2020 and after April 2020. Correlation coefficients between days of deferral and the degree of changes in clinical parameters were calculated. Results: The mean age of the 749 patients was 67.56±10.85 years, and 63.82% were female. Out of 749 patients, 33.24% deferred their SPT appointments after April 2020. The average total of postponement days was 109.49±88.84. The number of postponement days was positively correlated with changes in average PD (rs=0.474) and PESA (rs=0.443) in the high-risk subgroup of FMBS, and average PD (rs=0.293) and PESA (rs=0.253) in the highrisk subgroup of tooth number (TN). Patients belonging to the high-risk subgroups for both FMBS and TN had a positive correlation between postponement days and PISA (rs=0.56). Conclusions: The findings, the spread of COVID-19 appears to have extended the visit interval for some SPT patients. Moreover, longer visit intervals were correlated with the worsening of some clinical parameters for SPT patients with high PRA.
( Ichiro Kamei ),( Nana Tomitaka ),( Taichi Motoda ),( Yumi Yamasaki ) 한국미생물생명공학회 2022 Journal of microbiology and biotechnology Vol.32 No.2
Phlebia sp. MG-60 is the salt-tolerant, white-rot fungus which was isolated from a mangrove forest. This fungus expresses three kinds of manganese peroxidase (MGMnP) isozymes, MGMnP1, MGMnP2 and MGMnP3 in low nitrogen medium (LNM) or LNM containing NaCl. To date, there have been no reports on the biochemical salt-tolerance of these MnP isozymes due to the difficulty of purification. In present study, we established forced expression transformants of these three types of MnP isozymes. In addition, the fact that this fungus hardly produces native MnP in a high-nitrogen medium (HNM) was used to perform isozyme-selective expression and simple purification in HNM. The resulting MGMnPs showed high tolerance for NaCl compared with the MnP of Phanerochaete chrysosporium. It was worth noting that high concentration of NaCl (over 200 mM to 1200 mM) can enhance the activity of MGMnP1. Additionally, MGMnP1 showed relatively high thermo tolerance compared with other isozymes. MGMnPs may have evolved to adapt to chloride-rich environments, mangrove forest.