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Evaluation of a novel ion-exchange resin, St-60 with a cross-linking degree of 40% and various numbers of methylene groups in the porous shell
Get PDFThe complex relationship between the molecular structure of ion-exchange resins and the elution of carbohydrates presents a challenge for the development of polymer materials for high-performance liquid chromatography under a wide range of conditions. We evaluated the effect of the number of methylene groups in the functional chain of the shell portion on carbohydrate separation. In particular, core-shell ion-exchange resins with a monomer weight ratio of 40:60 (denoted as St-60) were synthesized with a constant cross-linking degree of 40%. The number of methylene groups in the functional chain of the porous polymer shell was varied from two to six for analyses of carbohydrate separation performance under strong alkaline conditions. A mixture of inositol, glucose, fructose, and sucrose was separated using a 0.10 or 0.15 mol/L NaOH eluent at flow rates of 0.3–0.7 mL/min. As the number of methylene groups increased, the carbohydrate retention times for St-60(Me:4) at flow rates of 0.3–0.7 mL/min with 0.10 mol/L NaOH eluent increased slightly. The theoretical plate numbers of glucose and fructose at flow rates of 0.5 and 0.7 mL/min decreased as the number of methylene groups decreased from six to two. These results suggest that St-60 core-shell ion-exchange resins are highly efficient for carbohydrate analyses. Their suitability for strongly alkaline conditions allows their effective use in electrochemical detection.This article is distributed under the terms of the Creative Commons Attribution 4.0 International Licens
ジョウサイ ダイガク ヤクガク ブ キョウイク ケンキュウ ギョウセキシュウ ダイ46ゴウ
No full text編集：城西大学薬学部 学部長 岡﨑 真理、編集委員：岡﨑 真理、鈴木 龍一郎、古地 壯光、岩田 直洋、矢島 克彦、横川 貴美、中山 光
Growth of FAST and new possibilities for broadcasting station content platforms
Get PDF本稿は，米国等における FASTビジネスの伸長を参照軸とし，日本の放送事業者が今後インターネット情報空間にどのように向き合って放送コンテンツ配信を持続可能な事業にするかについて，TVerの事業戦略と 2025年 10月改正放送法施行に伴う NHKのインターネット必須業務化の両面から考察した。米国における FASTの多チャンネルの広告つき無料放送配信サービス事業の拡大状況を整理して，成長ボトルネックとなる要素を抽出するとともに，日本の放送事業者にとってインターネット配信による広告放送の可能性を検討した。続いて TVerが広告を付けた無料配信により，国民・視聴者・ユーザーの負担が最も少ない形で，デジタル時代にふさわしい放送コンテンツの視聴体験を提供できる企業としての成長が見込まれることを指摘した。そして TVerと NHKが共同で，放送に関する設備・機材・システム等の共通化・共用化の推進という放送制度改革の方針に沿って，放送コンテンツのインターネット展開を着実かつ迅速に諸外国にキャッチアップできる方策を提示した。This paper examines how Japanese broadcasters will face the Internet information space in the future and make their businesses sustainable, while referring to the expansion
of FAST businesses in the United States and other countries. It also considers the intersection between TVer's business strategy, which takes FAST into consideration, and NHK's Internet mandatory business, which will come into effect in October 2025 with the enforcement of the revised Broadcasting Act. It also presents measures for TVer and NHK to steadily and quickly catch up with the Internet expansion of broadcasting in the context of the broadcasting system reform, which promotes the standardization and sharing of broadcasting facilities, equipment, systems, etc.研究ノート / Study Note
Note on monotonicity tests for the magnetic Schrodinger operator
Get PDFWe give a method to detect unknown obstacles in themagnetic Schrodinger equation using monotonicity tests. In [6], we gavemonotonicity tests to detect unknown obstacles under a monotonicityassumption on the scalar potential q. In this paper, we show that unknownobstacles can also be detected under a monotonicity assumptionon the vector potential A
A Study on Ethnic Culture Resource-based Tourism-Oriented Town Development Practices in China: The Case of Ethnic Tourism in Yanbian Korean Autonomous Prefecture
Get PDFToday, tourism has become an important part of people’s lives as their standard of living has improved and their leisure time has increased. Furthermore, as the importance of the social, economic, and cultural significance of tourism is increasingly recognized, the development of tourism has become an important socioeconomic policy that should be addressed by the public and private sectors in countries and regions around the world. In particular, with the rapid aging and depopulation in rural areas, and the hollowing out and decline of local economies, tourism-oriented town development practices that utilizing the unique local landscape and lifestyle is attracting attention as a regional development measure. In this study, we take up ethnic tourism based on the utilization of minority resources in Yanbian Korean Autonomous Prefecture, where the largest number of ethnic Koreans live, to explain the impact of ethnic tourism on cultural preservation and transmission, changes in understanding and image of other ethnic groups through tourism, and regional revitalization.論文 / Treatises JEL コード：L83（観光），R11（地域経済），Z1（文化経済
キタサカド ニギワイ サロン ツウシン ダイ120ゴウ
Get PDF今年も作品展＆即売会を開催します！(4月26日(土)、27日(日)) ふれあい市（フリーマーケット）の開催日が変わります 薬学部医療栄養学科コラム（レシピはサロンまで！