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    7341 research outputs found

    Studies on Distinctive Education of Josai Junior College to deal with Diversity Vol.2

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    学長所管研究「ディプロマ・ポリシーから逆算して設計した初年次教育の効果に関する研究」Research on Effectiveness of the First Year Experience planned backward from Diploma Polic

    Activity Report of First-Year Experience in the Freshman Seminar aiming at the development of Human Power

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    学長所管研究「ディプロマ・ポリシーから逆算して設計した初年次教育の効果に関する研究」Research on Effectiveness of the First Year Experience planned backward from Diploma Polic

    Activity Report in 2021 about Ishii Seminar, Faculty of Management, Josai University

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    地域教育実践報告 / Reports 編集:城西大学・城西短期大学地域連携センター紀要編集委員

    Diol responsive viscosity increase in a cetyltrimethylammonium bromide/sodium salicylate/3-fluorophenylboronic acid micelle system

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    We report a novel smart micellar system utilising a phenylboronic acid (PBA) derivative whose viscosity increases on adding diol compounds such as sugar or sugar alcohol. We prepared a typical worm-like micelle (WLM) system in 100 mM cetyltrimethylammonium bromide (CTAB)/70 mM sodium salicylate (NaSal), which showed high zero-shear viscosity (η0). Upon the addition of 20 mM 3-fluorophenylboronic acid (3FPBA) to the WLM system, η0 decreased by 1/300 that of the system without 3FPBA. Furthermore, upon the addition of 1.12 M fructose (Fru) and 1.12 M sorbitol (Sor) to the CTAB/NaSal/3FPBA system, η0 increased by 50-fold and 30-fold, respectively. 19F NMR spectral results of the systems using 4-fluorosalicylic acid (FSal) instead of NaSal demonstrated that the FSal/3FPBA-complex interacts with CTAB. Moreover, the addition of sugar or sugar alcohol to the micellar system leads to a decrease in the amount of FSal/3FPBA-complex interacting with CTA+ and an increase in the amount of 3FPBA/Fru or Sor-complex, which does not interact with CTA+. These changes in molecular interactions induce the elongation of the WLMs and increase the viscosity of the system. This system utilises the competitive cyclic ester bond between the NaSal/3FPBA and 3FPBA/sugar or sugar alcohol to induce viscosity changes.This article is licensed under a Creative Commons Attribution 3.0 Unported Licence

    ベッカ ノ ゲンジョウ ト トリクミ

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    Water environments around Josai University in Saitama

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    論文 / Article 編集:城西大学・城西短期大学地域連携センター紀要編集委員会 ※本文未公開のため全文にSummaryのみ登録・公開していたが方針変更のため新規登録。その際、以前の記載内容に変更を加えた。全文の該当文献も同様に変更済。(2024年3月8日

    1H-NMR-Based Metabolomics for the Classification of the Roots of Paeonia lactiflora, a Constituent of Kampo Medicines

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    The root of Paeonia lactiflora (PAEONIAE RADIX) is a constituent of the traditional Japanese medicines (Kampo) and is known to have various effects. Peony roots cultivated in Japan and China are available in the Japanese market for medicinal use. In this study, the chemical diversity of ten available peony roots in the market that differed in their cultivation area was investigated using 1H-NMR metabolomics techniques. Principal component analysis and hierarchical cluster analysis of the 1H-NMR spectra of the peony roots methanolic extracts revealed a clear difference between the metabolic profiles of Japanese and Chinese peony roots. By preparative procedures using chromatography based on 1H-NMR spectra measurements, oxypaeoniflorin and (+)-catechin were found to be specific compounds for Japanese peony root. All peony roots used in this study were listed in the Japanese Pharmacopoeia. Therefore, the differences in the constituents of these peony roots might be attributed to growing conditions than differences in species. Cultivation conditions also influence the quality of natural medicines

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