Výsledky vyhledávání - "Onur Çetinkaya"

Akademický článek

The Effect of Abdominal Massage on Enteral Complications in Geriatric Patients

Autor: Onur Çetinkaya RN, Özlem Ovayolu RN, PhD, Nimet Ovayolu RN, PhD

Publikováno v: SAGE Open Nursing, Vol 6 (2020)

Introduction and Purpose Geriatric patients, who are fed by nasogastric tube (NG), may suffer from complications. Therefore, this study was conducted to evaluate the effect of abdominal massage on Gastric residual volume (GRV), distension, vomiting,

Externí odkaz: https://doaj.org/article/b860a81c58ce4fddb342437786233f83

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Star polymer–TiO2 nanohybrids to effectively modify the surface of PMMA dielectric layers for solution processable OFETs

Autor: Lukasz Janasz, Onur Çetinkaya, Joanna Pietrasik, Katarzyna Budzalek, Hangjun Ding, Krzysztof Matyjaszewski, Marcin Kozanecki, Jacek Ulanski, Aleksandra Wypych-Puszkarz

Publikováno v: Journal of Materials Chemistry C. 9:1269-1278

Solution processable dielectric nanomaterials were prepared by the polymer-templated synthesis of hybrid nanoparticles containing TiO2. Well defined poly(styrene-co-acrylonitrile)-b-poly(acrylic acid)-poly(divinylbenzene) (PSAN-b-PAA-PDVB) star-shape

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::343cd9b9e80c630644c2f6043ea1bdb5
https://doi.org/10.1039/d0tc03137b

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Akademický článek

Fast Bragg Grating Inscription in PMMA Polymer Optical Fibres: Impact of Thermal Pre-Treatment of Preforms

Autor: Carlos A. F. Marques, Andreas Pospori, Gökhan Demirci, Onur Çetinkaya, Barbara Gawdzik, Paulo Antunes, Ole Bang, Pawel Mergo, Paulo André, David J. Webb

Publikováno v: Sensors, Vol 17, Iss 4, p 891 (2017)

In this work, fibre Bragg gratings (FBGs) were inscribed in two different undoped poly- (methyl methacrylate) (PMMA) polymer optical fibres (POFs) using different types of UV lasers and their inscription times, temperature and strain sensitivities ar

Externí odkaz: https://doaj.org/article/48f6b60b2f5f40e78f0abaab666ae659

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Effect of the different chain transfer agents on molecular weight and optical properties of poly(methyl methacrylate)

Autor: Gökhan Demirci, Onur Çetinkaya, Pawel Mergo

Publikováno v: Optical Materials. 70:25-30

Investigation of molecular weight and optical properties of poly(methyl metacrylate) (PMMA) polymerized in house with different chain transfer agents was studied. Isopropyl alcohol (IPA), n-butyl mercaptan (nBMC) and pentamethyl disilane (PMDS) were

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::23ab102c229ba2d45dc2789d41d9047e
https://doi.org/10.1016/j.optmat.2017.05.009

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Effective SERS materials by loading Ag nanoparticles into poly(acrylic acid-stat-acrylamide)-block-polystyrene nano-objects prepared by PISA

Autor: Julita Muszyńska, Onur Çetinkaya, Krzysztof Matyjaszewski, Jacek Ulanski, Gokhan Demirci, Marcin Kozanecki, Yaoming Zhang, Joanna Pietrasik, Grzegorz Nowaczyk, Paulina Filipczak, Krzysztof Halagan

Publikováno v: Polymer. 224:123747

Spherical nano-objects composed of poly(acrylic acid-stat-acrylamide)-block-polystyrene (P(AA-stat-Am)-b-PS) were prepared via polymerization induced self-assembly (PISA) and used as templates for the synthesis of hybrid Ag@P(AA-stat-Am)-b-PS. These

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d93e59d4d7f5288cc27c061e2bb5fd9e
https://doi.org/10.1016/j.polymer.2021.123747

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Molecular alignment relaxation in polymer optical fibers for sensing applications

Autor: Katerina Krebber, Pavol Stajanca, Onur Çetinkaya, Marcus Schukar, David J. Webb, Pawel Mergo

Publikováno v: Optical Fiber Technology. 28:11-17

A systematic study of annealing behavior of drawn PMMA fibers was performed. Annealing dynamics were investigated under different environmental conditions by fiber longitudinal shrinkage monitoring. The shrinkage process was found to follow a stretch

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ec9f60dce7b7713b74f633935de9f1a2
https://doi.org/10.1016/j.yofte.2015.12.006

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Boronic acid functionalized silica microparticles for isolation of flavonoids from Hypericum perforatum

Autor: Gülsen Tel Çayan, Şeyda Kıvrak, Onur Çetinkaya, Hüseyin Cicek

Publikováno v: Volume: 5, Issue: 1 41-60
Journal of the Turkish Chemical Society Section A: Chemistry
Journal of the Turkish Chemical Society, Section A: Chemistry, Vol 5, Iss 1, Pp 41-60 (2017)

We have selectively separated cis-and/or vicinal-diol-containing flavonoids from Hypericum perforatum (HP) by adsorption/desorption used aminophenylboronic acid (APBA) functionalized uniform (1.6 ?m) silica microparticles (BASPs) synthesized via the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eedca05a8770c571eb75036071628b79
https://dergipark.org.tr/tr/pub/jotcsa/issue/31055/307440

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Fast bragg grating inscription in PMMA polymer optical fibres: Impact of thermal pre-treatment of preforms

Autor: Onur Çetinkaya, Gökhan Demirci, Paulo André, Ole Bang, Pawel Mergo, David J. Webb, Barbara Gawdzik, Andreas Pospori, Carlos Marques, Paulo Antunes

Publikováno v: Marques, C A F, Pospori, A, Demirci, G, Çetinkaya, O, Gawdzik, B, Antunes, P, Bang, O, Mergo, P, André, P & Webb, D J 2017, ' Fast bragg grating inscription in PMMA polymer optical fibres: Impact of thermal pre-treatment of preforms ', Sensors, vol. 17, no. 4, 891 . https://doi.org/10.3390/s17040891
Sensors (Basel, Switzerland)
Sensors, Vol 17, Iss 4, p 891 (2017)
Sensors; Volume 17; Issue 4; Pages: 891

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6f8e1311d3bed3baf12f13b94a536ce5
https://orbit.dtu.dk/en/publications/6dc369cc-2b9c-4001-a739-be46e897974d

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Synthese and characterization of boronic acid functionalized macroporous uniform poly(4-chloromethylstyrene-co-divinylbenzene) particles and its use in the isolation of antioxidant compounds from plant extracts

Autor: Onur Çetinkaya, Hüseyin Cicek, Mehmet Emin Duru

Publikováno v: Journal of Chromatography B. 909:51-60

Aminophenyl boronic acid (APBA) carrying uniform-macroporous poly(chloromethylstyrene-co-divinylbenzene). poly(CMS-co-DVB) particles were synthesized for selective separation of cis-diol-containing flavonoids from plant extracts. For this purpose, 2.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0aba236574e19fc11a958f10832c7045
https://doi.org/10.1016/j.jchromb.2012.09.039

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Decreasing diameter fluctuation of polymer optical fiber with optimized drawing conditions

Autor: Grzegorz M. Wojcik, Pawel Mergo, Onur Çetinkaya

Publikováno v: Materials Research Express. 5:056201

The diameter fluctuations of poly(methyl methacrylate) based polymer optical fibers, during drawing processes, have been comprehensively studied. In this study, several drawing parameters were selected for investigation; such as drawing tensions, pre

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f8eb38281cedf81a1f5943d579584a7a
https://doi.org/10.1088/2053-1591/aabf73

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