Yazar "Teke, Mustafa" seçeneğine göre listele

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    A comparative study for lipase immobilization onto alginate based composite electrospun nanofibers with effective and enhanced stability
    (ELSEVIER, 2017) Dogac, Yasemin Ispirli; Deveci, Ilyas; Mercimek, Bedrettin; Teke, Mustafa
    In this study, lipase was successfully immobilized on polyvinyl alcohol/alginate and polyethylene oxide/alginate nanofibers that were prepared by electrospinning. Results showed that nanofibers (especially polyvinyl alcohol/alginate) enhanced the stability properties of lipase. When the free lipase lost its all activity after 40-60 min at high temperatures, both lipase immobilized nanofibers kept almost 65-70% activity at the same time. The lipase immobilized poly vinyl alcohol/alginate and polyethylene oxide/alginate nanofibers protected approximately all of their activities until pH 9. Lipase immobilized polyvinyl alcohol/alginate and polyethylene oxide/alginate nanofibers maintained 60% of their activities after 14 and 7 reuses, respectively. The morphology of nanofibers was characterized by Scanning Electron Microscope, Fourier Transform Infrared Spectroscopy and Thermal Gravimetric Analyzer. As a result, this nanofiber production method, electrospinning, is simple, versatile and economical for preparing appropriate carrier to immobilize the enzymes. (C) 2016 Elsevier B.V. All rights reserved.
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    Genelleştirilmiş Fibonacci ve Genelleştirilmiş k-Fibonacci Sayıları ile İlgili Toplamlar
    (Selçuk Üniversitesi Fen Bilimleri Ensititüsü, 2022) Teke, Mustafa; Uslu, Kemal
    This study consists of three parts, in the first part the basic concepts related to the subjects are mentioned, in the second part some results related to Generalized Fibonacci numbers are discussed, in the third part some identities and results related to Generalized k-Fibonacci numbers are given.