Yalova, Turkey
Yalova, Turkey

University of Yalova is a university in Turkey's Yalova Province. University of Yalova has been founded under the Law no 5765 on May 22, 2008 and Prof. Dr. M. Niyazi Eruslu has been appointed as the first rector.The Faculty of Economics and Administrative science and Vocational School of Higher Education of Yalova that had already been established and functioning as a constituent of Uludag University became a part of the recently founded university following the enactment of the law. The Faculty of Economics and Administrative science of the University provides education at the undergraduate and provides postgraduate levels for students from foreign countries and from Turkey. The faculty offers academic programs that strive to teach administrative, entrepreneurial, and economical skills. It encourages providing, compiling, and publishing new sources of information in the field of economics and administrative science. Also the faculty contributes the business world through programs that aim at mastering efficiency and productivity. Newer departments include business administration , international relations , social service and labor economics - industrial relations have already been established.The Faculty of Law has also been founded and attempts to open new departments have been initiated.The faculty of engineering aims not only to impart contemporary engineering and scientific knowledge in the disciplines concerned, but also to inculcate creativity, research techniques, and self development. The undergraduate curriculum provides a firm background in the basic science through courses in computer science, chemistry, energy systems and polymer fields.In addition to faculties, Yalova University has a vocational school of higher education. The school of foreign languages aims to improve the students' language skills before they start their English-medium instruction. The school of foreign languages has a modular system in accordance with Common European Framework of Reference. Despite of being a new built university, national and international conferences, symposiums were Ottoman Empire’s Establishment Date Symposium organized by Yalova - Bilkent Universities and International VII. Wikipedia.

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Boron doped TiO2 (B-TiO2) photocatalysts with visible light activity were successfully synthesized by solvothermal method. The characterizations of the synthesized products were carried out by XRD, SEM-EDAX, BET, XPS, TGA-DTG and UV–vis spectroscopy. The band gap values of TiO2 were decreased with the increase of the boron doping level. XPS analysis revealed that the interstitial TiO2 structure was modified via formation of [Formula presented] bonds. Photocatalytic degradations of endocrine disrupting compounds (2,4-dichlorophenol (DCP), bisphenol-A (BPA)) and non-steroidal anti-inflammatory drugs (ibuprofen (IBU), flurbiprofen (FLU)) were examined by using raw and boron doped TiO2 catalysts under UV-A and visible irradiation. Boron doping can remarkably enhance light utilization and improve the photocatalytic activity of TiO2 toward the selected organics. The effects of boron content, initial solution pH and H2O2 on the photocatalytic performance were studied. The BPA, DCP, IBU and FLU reaction rate constants of B-TiO2 (8 wt.% B) were found as kBPA = 5.989 × 10−2, kDCP = 2.087 × 10−2, kIBU = 1.818 × 10−2, and kFLU = 1.319 × 10−2 min−1. B-doped TiO2 catalysts were found to be effective for the consecutive degradation tests referring their potentiality in extended applications. © 2016 Elsevier B.V.

Tasdelen M.A.,Yalova University | Yagci Y.,Technical University of Istanbul | Yagci Y.,King Abdulaziz University
Angewandte Chemie - International Edition | Year: 2013

Spatial and temporal control over chemical and biological processes, both in terms of "tuning" products and providing site-specific control, is one of the most exciting and rapidly developing areas of modern science. For synthetic chemists, the challenge is to discover and develop selective and efficient reactions capable of generating useful molecules in a variety of matrices. In recent studies, light has been recognized as a valuable method for determining where, when, and to what extent a process is started or stopped. Accordingly, this Minireview will present the fundamental aspects of light-induced click reactions, highlight the applications of these reactions to diverse fields of study, and discuss the potential for this methodology to be applied to the study of biomolecular systems. Shine a light: Owing to their ease of implementation and the availability of inexpensive light sources, light-induced click reactions (see picture) have become a powerful methodology for the synthesis of materials and the modification of biomaterials. Fundamental aspects of these reactions and their application in surface and materials science, as well as their potential in the study of biomolecular systems are highlighted. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Cetin Yerlikaya N.,Yalova University | Aktas A.,Istanbul University
Materials and Design | Year: 2012

In this study, the failure loads of L-type corner joints in case-type furniture have been analyzed experimentally and statistically in laminated medium-density fiberboard material. The failure loads of five corner joints have been analyzed experimentally under tension and compression moments; these joint types are glass-fiber composite layer (C), dowel (D), dowel + composite layer (DC), dowel + minifix (DM), and dowel + minifix + composite layer (DMC). The test results were analyzed statistically by Weibull distribution to obtain a 95% reliability level for failure load. Tests were carried out according to ASTM Standards. Results show that the failure load takes its highest value in the DMC case for both average values of the test results and for 95% reliability under Weibull distribution. On the other hand, it takes its lowest value in the D case. In addition, the 95% reliability value for each corner joint configuration is approximately equivalent to the 0.53 average value of the failure load. © 2012 Elsevier Ltd.

Landslides are natural phenomena in the same class of natural disasters as earthquakes, floods, hurricanes, erosion, and volcanic eruptions that adversely affect human lives and property. Owing to their widespread occurrence, landslides are easily visible and able to be partially understood by people witnessing them. Nevertheless, to comprehend the detail of their formation and determine their potential, it is necessary to undertake geodetic, geological, and geophysical measurements in regions prone to landslides. By analyzing these measurements, it is possible to better ascertain those regions predisposed to landslides and thus provide the means to prevent loss of life and property. The city of Zonguldak, situated in the Western Black Sea region of Turkey, has a high occurrence of landslides owing to its harsh topography with rugged and steep slopes and rainfall in almost every season. Furthermore, the diurnal temperature ranging up to 10°C in all seasons, especially in winter, plays a crucial role in rock disintegration in this region. Other factors damage ground composition and trigger landslides, such as underground mining operations, road construction that collapses rocky hills using explosives, and excavation works in steep terrain for building construction. This study gives a detailed account of the causes and adverse effects of landslides and their parameters through examples of landslide occurrences in the region, together with the results and analyses of two periods of geodetic measurements conducted on the Zonguldak-Ereǧli Highway in IlIksu district. © 2013 Springer Science+Business Media.

Yilmaz A.,Yalova University
Science and Technology of Advanced Materials | Year: 2011

The Portevin-Le Chatelier (PLC) effect manifests itself as an unstable plastic flow during tensile tests of some dilute alloys under certain regimes of strain rate and temperature. The plastic strain becomes localized in the form of bands which move along a specimen gauge in various ways as the PLC effect occurs. Because the localization of strain causes degradation of the inherent structural properties and surface quality of materials, understanding the effect is crucial for the effective use of alloys. The characteristic behaviors of localized strain bands and techniques commonly used to study the PLC effect are summarized in this review. A brief overview of experimental findings, the effect of material properties and test parameters on the PLC effect, and some discussion on the mechanisms of the effect are included. Tests for predicting the early failure of structural materials due to embrittlement induced by the PLC effect are also discussed. © 2011 National Institute for Materials Science.

Demirci G.,Yalova University | Tasdelen M.A.,Yalova University
European Polymer Journal | Year: 2015

Well-defined graft copolymers were synthesized by a simple photoinduced copper(I) catalyzed 1,3-dipolar cycloaddition click reaction of alkyne-terminated poly(epsilon-caprolactone) (PCL) either side-chain azide-functional polystyrene (PSt) or poly(vinyl chloride) (PVC). The alkyne-terminated PCL was prepared by ring-opening polymerization of epsilon-caprolactone in bulk using Sn(Oct)2 as a catalyst and propargyl alcohol as an initiator. Whereas, the halide groups of PVC and poly(styrene-co-chloromethylstyrene) prepared by nitroxide mediated radical copolymerization were transformed to side chain azide-functional PVC or PSt via nucleophilic substitution reaction using sodium azide. Subsequently, the resulting alkyne and azide functional polymers were mixed in DMF with Cu(II)Br2/PMDETA ligand and 2, 2-dimethoxy-2-phenyl acetophenone and irradiated by UV light to form corresponding graft copolymers. The FT-IR, 1H NMR, GPC and DSC analyzes clearly pointed out an efficient photoinduced CuAAC click reactions between azide- and alkyne-functional precursor polymers. © 2015 Elsevier Ltd. All rights reserved.

Tasdelen M.A.,Yalova University
European Polymer Journal | Year: 2011

Poly(epsilon-caprolactone)/clay nanocomposites were prepared by copper(I) catalyzed azide/alkyne cycloaddition (CuAAC) "click" reaction. In this method, ring-opening polymerization of epsilon-caprolactone using propargyl alcohol as the initiator has been performed to produce alkyne-functionalized PCL and the obtained polymers were subsequently attached to azide-modified clay layers by a CuAAC "click" reaction. The exfoliated polymer/clay nanocomposites were characterized by X-ray diffraction spectroscopy, thermogravimetric analysis and transmission electron microscopy. © 2010 Published by Elsevier Ltd.

In this study, effects of fasteners on the failure loads of L-type corner joints in laminated particleboard (LPB) case-type furniture have been analyzed experimentally and statistically. Glass-fiber composite (fabric), dowel, and minifix as fasteners and glass-fiber composite (C), dowel (D), dowel. +. fabric (DC), dowel. +. minifix (DM), and dowel. +. minifix. +. fabric (DMC) as joint type are used in this study. Tests were carried out according to ASTM Standards. Results show that the failure load takes its highest value in the DMC case for both average values of the test results and for 95% reliability under Weibull distribution. On the other hand, it takes its lowest value in the D case for compression test and in the C case for tension test. In addition, the 95% reliability values for each corner joint configuration are approximately equivalent to the 0.52 average value of the failure load. © 2012 Elsevier Ltd.

Gok M.,Yalova University
International Journal of Systems Science | Year: 2015

Parkinson's disease is a disease of the central nervous system that leads to severe difficulties in motor functions. Developing computational tools for recognition of Parkinson's disease at the early stages is very desirable for alleviating the symptoms. In this paper, we developed a discriminative model based on a selected feature subset and applied several classifier algorithms in the context of disease detection. All classifier performances from the point of both stand-alone and rotation-forest ensemble approach were evaluated on a Parkinson's disease data-set according to a blind testing protocol. The new method compared to hitherto methods outperforms the state-of-the-art in terms of both predictions of accuracy (98.46%) and area under receiver operating characteristic curve (0.99) scores applying rotation-forest ensemble k-nearest neighbour classifier algorithm. © 2013 Taylor & Francis.

Tasdelen M.A.,Yalova University
Polymer Chemistry | Year: 2011

The "click" chemistry concept is based on utilizing rapid reactions which are efficient, versatile, and selective. Indeed, Diels-Alder (DA) reactions fulfill most of the requirements for the "click" chemistry concept. In this review, we discuss the recent reports concerned with the use of DA "click" reactions in the synthesis of various macromolecular architectures, bioconjugates and hybrid materials. © 2011 The Royal Society of Chemistry.

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