High-pressure synthesis of highly oxidized Ba_0.5Sr_0.5Co_0.8Fe_0.2O_3−δ cubic perovskite

application/pdfMaterials Chemistry Frontiers. 2019, 3 (6), P.1209-1217journal articl

次世代型ダメージレスCMP装置の開発

textapplication/pdfdepartmental bulletin pape

Observation of B̅0→DsJ*(2317)+K- Decay

journal articl

Solar neutrino measurements in Super-Kamiokande-II

The results of the second phase of the Super-Kamiokande solar neutrino measurement are presented and compared to the first phase. The solar neutrino flux spectrum and time variation as well as oscillation results are statistically consistent with the first phase and do not show spectral distortion. The timedependent flux measurement of the combined first and second phases coincides with the full period of solar cycle 23 and shows no correlation with solar activity. The measured 8B total flux is (2:38± 0.05(stat.)/begin+0.16 // -0.15/end (sys.)) × 10^6 cm^{-2} s^{-1} and the day-night difference is found to be (-6.3 ±4.2(stat.)±3.7(sys.))%.There is no evidence of systematic tendencies between the first and second phases.journal articl

(above) Phyllis Howley, 70, sits on what’s left of the porch of her son’s New Orleans home

<p><b>Copyright information:</b></p><p>Taken from "In Katrina’s Wake"</p><p>Environmental Health Perspectives 2006;114(1):A32-A39.</p><p>Published online Jan 2006</p><p>PMCID:PMC1332683.</p><p>This is an Open Access article: verbatim copying and redistribution of this article are permitted in all media for any purpose.</p> (left) The beach in Biloxi, Mississippi, four days after Katrina

『国境を越える政策実験・EU』（平島健司編）

書評Book Reviewdepartmental bulletin pape

東アジア学習者を対象とする日本語教育における音声教育の方策に関する研究

application/pdf中国語（北京語・上海語）・韓国語話者の破裂音はじめ、共通して誤用傾向のある音声要素の指導に関する研究を行った。中国語と韓国語の破裂音の相違点・類似点を明らかにし、範疇知覚の構築過程、発話と知覚における習得のメカニズム、高さ（Fo）への母語干渉、日本語音声の知覚・発話面での具体的な指導方法を提示できた。MRIによる指導方法については、さらに基礎研究や実験の継続が必要であり、今後の課題としたい。This study investigates not only the Japanese plosive sounds produced by Chinese L1 learners (the Beijing dialect and the Shanghai dialect) and Korean L1 learners, but also the teaching of this voice element because they have a tendency to commit errors when producing this common Japanese phonetic sound. The study has shown the differences and the similarities between Chinese and Korean plosive sounds compared and contrasted with the Japanese sounds, the construction process of categorical perception, the mechanism of the acquisition in pronunciation and perception of Japanese plosives and the interference caused by the L1 language’s plosives to the height (Fo) of the prosody. The study also suggests a method of phonetic instruction for the pronunciation of and perception of the Japanese sounds. Regarding the development of a pedagogical method facilitated by Magnetic Resonance Imaging (MRI), more basic research and experimentation is required and that will be a focus of further study.2009年度～2012年度科学研究費補助金(基盤研究(C))研究成果報告書21520538research repor

Room-temperature near-ultraviolet electroluminescence from a linear silicon chain

Single-layer light emitting diodes (LEDs) were fabricated using poly[bis(p-butylphenyl)silane] as the emissive layer. An efficient and stable electroluminescence with a maximum at 407 nm was observed at room temperature under a forward electric field greater than 6×105?V/cm. The coincidence of electroluminescence with photoluminescence suggests the origin of the electroluminescence in an excited silicon chain segment. The high external quantum efficiency (0.1% photons/electron), narrow emission (full width at half maximum=15?nm), improved operating stability, and good solubility in organic solvents provide the possibility of using polysilanes for ultraviolet LEDs. c 1997 American Institute of Physics.journal articl