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    新潟県東山地域における微化石を用いた鮮新―更新統の堆積年代と底層環境の推定

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    It is well known that warm intermediate waters had existed in the Sea of Japan during the Late Pliocene. However, sea bottom environments during the Late Pliocene have not been revealed. In this study, microfossils of planktonic foraminifers, benthic foraminifers, and ostracods were used to examine the bottom sedimentary environments in the Higashiyama area, Niigata Prefecture, central Japan. Samples for fossils ostracod, planktonic foraminifer, and benthic foraminifer analysis were collected from the Kawaguchi Formation, that crops out along Wadagawa and Nobegawa rivers. Wadagawa River locates in the eastern part of the studied area while the Nobegawa River is in the western part. Three specimens of fossil ostracods were found from two samples. Of the seven samples containing fossil planktonic foraminifer, two contained Globorotalia inflata. Furthermore, at least thirty genera of benthic foraminifers were identified from seven samples. G. inflata was identified from the sample at least 5 m above the horizon of G. inflata occurrence previously reported in Wadagawa River and 14.7 m below the NA33 tuff layers in Nobegawa River. Dominant species of benthic foraminifers indicates that the depositional environment of the eastern part was estimated to be a continental shelf environment, while that of the western part was deeper than that in the east part. Co-occurrence of G. inflata and cold-water ostracod taxa suggest that cold waters had existed just below the surface warm-water during the Late Pliocene.ArticleJournal of the Faculty of Science Shinshu University 49 : 1-17(2020)departmental bulletin pape

    非線形非定常確率過程における理論的基礎付けとその応用

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    研究種目:研究活動スタート支援研究期間:2016~2017課題番号:16H06836研究代表者:矢部 竜太研究者番号:60779164Other2016~2017年度科学研究費助成事業(研究活動スタート支援)研究成果報告書 課題番号:16H06836 研究代表者:矢部 竜太research repor

    ストレス削減と職務業績向上を同時達成させる要因に関する実証的研究

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    研究種目:基盤研究(C)研究期間:2015~2017課題番号:15K03640研究代表者:岩田 一哲研究者番号:70345859Other2015~2017年度科学研究費助成事業(基盤研究(C))研究成果報告書 課題番号:15K03640 研究代表者:岩田 一哲research repor

    コールドスプレー法によるセラミック基板上への金属薄膜作製のための技術開発

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    研究種目:基盤研究(C)研究期間:2015~2017課題番号:15K06460研究代表者:榊 和彦研究者番号:10252066Other2015~2017年度科学研究費助成事業(基盤研究(C))研究成果報告書 課題番号:15K06460 研究代表者:榊 和彦research repor

    気候変動下での永久凍土地帯に生育する樹木の地下部および地上部成長制限要因の変化

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    研究種目:基盤研究(B)研究期間:2014~2017課題番号:26304026研究代表者:安江 恒研究者番号:00324236Other2014~2017年度科学研究費助成事業(基盤研究(B))研究成果報告書 課題番号:26304026 研究代表者:安江 恒research repor

    Detection of Amine Vapors using Luminescent Xerogels from Supramolecular Metal-Containing

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    Supramolecular fluorescent gelators containing a tris(beta-diketonato) complex are synthesized by using gelation-driving chelates, and their gelation abilities are studied with 15 solvents. Thin-layer films are prepared on quartz plates from the solutions and they are studied as chemosensors for amines. Fluorescence-quenching of the thin-layer films upon exposure to saturated primary and secondary amine vapors is monitored to evaluate the abilities of the chemosensors to detect amines. The morphologies of the thin-layer films are observed by transmission electron microscopy (TEM) and discussed in relation to their fluorescence-quenching. The fluorescence-quenching efficiencies upon exposure to saturated primary and secondary amines depend on the basicity and bulkiness of the amines rather than the vapor pressure. The fluorescence-quenching is caused by decomposition of a complex through nucleophilic addition of primary or secondary amines to its carbonyl group. The detection of tertiary amines is performed by monitoring the fluorescence emission from the thin-layer films, which are composed of a ligand and EuCl3. The emergence of fluorescence originates from the formation of fluorescent Eu3+-containing gelator, in which dehydrochloric acid by tertiary amines is a trigger for the complexation.ArticleBULLETIN OF THE CHEMICAL SOCIETY OF JAPAN.91(4):538-547(2018)journal articl

    Synthesis of Fluorescent Gelators and Direct Observation of Gelation with a Fluorescence Microscope

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    Fluorescein-, benzothiazole-, quinoline-, stilbene-, and carbazole-containing fluorescent gelators have been synthesized by connecting gelation-driving segments, including l-isoleucine, l-valine, l-phenylalanine, l-leucine residue, cyclo(l-asparaginyl-l-phenylalanyl), and trans-(1R,2R)-diaminocyclohexane. The emission behaviors of the gelators were investigated, and their gelation abilities studied against 15 solvents. The minimum gel concentration, variable-temperature spectroscopy, transmission electron microscopy, scanning electron microscopy, fluorescence microscopy (FM), and confocal laser scanning microscopy (CLSM) were used to characterize gelation. The intermolecular hydrogen bonding between the N-H and C=O of amide, van der Waals interactions and pi-pi stacking play important roles in gelation. The colors of emission are related to the fluorescence structures of gelators. Fibrous aggregates characterized by the color of their emission were observed by FM. 3D images are produced by the superposition of images captured by CLSM every 0.1 mu m to a settled depth. The 3D images show that the large micrometer-sized aggregates spread out three dimensionally. FM observations of mixed gelators are studied. In the case of gelation, two structurally related gelators with the same gelation-driving segment lead to the gelators build up of the same aggregates through similar hydrogen-bonding patterns. When two gelators with structurally different gelation-driving segments induce gelation, the gelators build up each aggregate through individual hydrogen-bonding patterns. A fluorescent reagent that was incorporated into the aggregates of gels through van der Waals interactions was developed. The addition of this fluorescent reagent enables the successful observation of nonfluorescent gelators' aggregates by FM.ArticleCHEMISTRY-A EUROPEAN JOURNAL.22(47):16937-16947(2016)journal articl

    デザイン領域における高等教育で活用するe-プロトタイピング学習教材と学習法の開発

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    研究種目:基盤研究(C)研究期間:2015~2017課題番号:15K00682研究代表者:蛭田 直研究者番号:80548230Other2015~2017年度科学研究費助成事業(基盤研究(C))研究成果報告書 課題番号:15K00682 研究代表者:蛭田 直research repor

    社会科における副読本のメディア構成と活用法に関する研究

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    研究種目:基盤研究(C)研究期間:2015~2017課題番号:15K04421研究代表者:松本 康研究者番号:60229581Other2015~2017年度科学研究費助成事業(基盤研究(C))研究成果報告書 課題番号:15K04421 研究代表者:松本 康research repor

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