67 research outputs found
Flow injectioin analysis using an organic phase enzyme electrode (OPEE)
No full textin: "Sensors and Microsystems", C. Di Natale, A. D'Amico, P. Dario, (Eds.), World Scientific Publishing Co. Pte. Ltd. (Pub.), Singapor
Sprache als Mittel der „Grenzüberschreitung“ – von Hürden und vom „Brücken bauen“ in multikulturellen Regionen der Slowakei und Serbiens
No full textDieser Beitrag befasst sich mit Sprache als Mittel der „Grenzüberschreitung“ in multikulturellen Regionen der Slowakei und Serbiens. Es wird aufgezeigt, welche Rolle Sprache in den inter-ethnischen Beziehungen in Ostmitteleuropa spielt, welche Hürden existieren und aufgebaut werden, gleichzeitig aber auch, wie diese abgebaut werden können, oder versucht wird, diese abzubauen. Es geht dabei erstens um die Problematik des Sprachunterrichts in geteilten, multikulturellen Gesellschaften sowie den Herausforderungen für Minderheiten in diesem Zusammenhang. In einem zweiten Schritt werden Initiativen der Zivilgesellschaft diskutiert und dabei Möglichkeiten aufgezeigt, wie Grenzen mithilfe von Sprache gerade in einem politisch heiklen Umfeld überwunden werden können
Ovde. Mnogoglasje Banata u dokumentarnoj prozi Tibora Varadija
No full textDokumentarna proza Tibora Varadija posvećena je slučajevima iz advokatske prakse Kancelarije Varadi, koja je delovala više od jednog stoleća – od 1893. do 2014. godine – u Zrenjaninu/Bečkereku i sačuvala bogatu advokatsku arhivu. Na početku ovog poglavlja se daju podazi iz biografije Tibora Varadija, a drugi deo čini razgovor s autorom o njegovim knjigama, uz kritičko preispitivanje društvenih pojmova, kao što su značaj arhiva, iskustvo života u graničnim oblastima, kulturno pamćenje, značaj prava i pravednosti, mešoviti brakovi, višejezičnost, značaj svakodnevice, odnos prema fašizmu i komunizmu, pitanje izvesnosti identiteta, i dr. Zasnovan na primerima iz Varadijeve proze, intervju pokušava da odgovori na pitanje u kojoj meri se uočava (dis)kontinuitet s praksama višejezičnosti iz prošlosti i kako su određeni istorijski događaji oblikovali živote manjina i upotrebu jezika u Vojvodini.Tibor Várady’s documentary prose is based on the court cases from the Várady Law Office, which worked for more than a century – from 1893 to 2014 – in Zrenjanin/Nagybecskerek and has preserved a rich archive. The first part of the chapter is dedicated to the biography of Tibor Várady, and the second part is an interview with the author about his books, with a critical review of social concepts, such as the importance of archives, the experience of life in border areas, cultural memory, the importance of law and justice, mixed marriages, multilingualism, everyday life, attitude towards fascism and communism refracted through court archives, certainty of identity, etc. Based on the Várady’s prose, the interview attempts to answer to what extent there is a (dis)continuity with the practices of multilingualism from the past and how certain historical events shaped the lives of minorities and language use in Vojvodina
Investigation of organic phase biosensor for measuring glucose in flow injection analysis system
No full textThe aim of our present work was to develop a flow-through measuring apparatus for the determination of glucose content as model system in organic media and to compare the properties of the biosensor in organic and in aqueous solutions. Glucose oxidase (GOx) enzyme was immobilized on a natural protein membrane in a thin-layer enzyme cell, made of Teflon. The enzyme cell was connected into a flow injection analyzer (FIA) system with an amperometric detector. After optimizing the system the optimal flow rate was found at 0.8mlmin-1. In this case 50-60 samples were measured per hour. Adding ferrocene monocarboxylic acid (FMCA) to acetonitrile and to 2-propanol the optimal concentration was 5mgl-1, while in the case of tetrabutylammonium-p-toluenesulfonate (TBATS) the optima were 2.7 and 8.0mgl-1, respectively. With 6% buffer in acetonitrile containing FMCA more than 100 samples could be measured with the enzyme cell without any loss of activity. Measuring the hydrogen peroxide content produced in 2-propanol, the optimal concentration of buffer solution was at about 20%. The linear measuring range was 0-0.5mM glucose in acetonitrile and 0-1.0mM in 2-propanol. Glucose concentration of oily food samples was measured and compared with results obtained by the reference UV-photometric method. The correlation between the results measured by the two methods was very good with correlation coefficient (r) as high as 0.976. © 2003 Elsevier B.V. All rights reserved
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