Faculty of Engineering

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Recent Submissions

Current applications of exopolysaccharides from lactic acid bacteria in the development of food active edible packaging Moradi, Mehran; Guimarães, Jonas T; Şahin, Serpil (Elsevier BV, 2021-08-01) The lactic acid bacteria (LAB) are usually recognized as safe for consumption and comprise several genera with different technological and health-promoting potential for food applications, including probiotic characteristi...
A Fully-Implantable MEMS-Based Autonomous Cochlear Implant (FLAMENCO) Külah, Haluk(2021-6-30) Sensorineural impairment, representing the majority of the profound deafness, can be restored using cochlear implants (CIs), which electrically stimulates the auditory nerve to repair hearing in people with severe-to-profo...
Supercritical extraction of biomass as an effective pretreatment step for the char yield control in pyrolysis Trubetskaya, Anna; Budarin, Vitaliy; Arshadi, Mehrdad; Magalhães, Duarte; Kazanç Özerinç, Feyza; Hunt, Andrew John (2021-06-01) © 2021 The Author(s)This work demonstrates that the coupling of supercritical carbon dioxide extraction with pyrolysis is an effective method for the removal of extractives from forestry residues and generation of solid ch...
A crystal plasticity based finite element framework for RVE calculations of two-phase materials: Void nucleation in dual-phase steels Yalçınkaya, Tuncay; Çakmak, Serhat Onur; Tekoğlu, Cihan (Elsevier BV, 2021-05-01) © 2020 Elsevier B.V.A crystal plasticity based finite element (CPFE) framework is developed for performing representative volume element (RVE) calculations on two-phase materials. The present paper investigates the mechani...
Biohydrogen production from cattle manure and its mixtures with renewable feedstock by hyperthermophilic Caldicellulosiruptor bescii Yılmazel Tokel, Yasemin Dilşad; Duran, Metin (Elsevier BV, 2021-04-10) © 2021 Elsevier LtdFermentation of cattle manure as the sole carbon source and along with the mixtures of switchgrass and wastewater biosolids by hyperthermophilic cellulolytic bacterium, Caldicellulosiruptor bescii was as...
Exploring the water mobility in gelatin based soft candies by means of Fast Field Cycling (FFC) Nuclear Magnetic Resonance relaxometry Pocan, Pelin; İlhan, Esmanur; Florek–Wojciechowska, Małgorzata; Masiewicz, Elżbieta; Kruk, Danuta; Öztop, Halil Mecit (Elsevier BV, 2021-04-01) © 2020 Elsevier Ltd1H spin-lattice relaxation experiments for gelatin-based candies prepared by different amounts of D-allulose have been performed in the frequency range of 4 kHz–40 MHz. In addition, physical properties s...
Nature Allows High Sensitivity Thermal Imaging With Type-I Quantum Wells Without Optical Couplers: A Grating-Free Quantum Well Infrared Photodetector With High Conversion Efficiency Beşikci, Cengiz (2021-04-01) Quantum well infrared photodetectors (QWIPs) have facilitated thermal imagers with excellent pixel operability, uniformity and stability. The main disadvantage of the standard QWIP technology is the low conversion efficien...
Prediction of yields and composition of char from fast pyrolysis of commercial lignocellulosic materials, organosolv fractionated and torrefied olive stones Magalhães, Duarte; Gürel, Kaan; Matsakas, Leonidas; Christakopoulos, Paul; Pisano, Italo; Leahy, J.J.; Kazanç Özerinç, Feyza; Trubetskaya, Anna (Elsevier BV, 2021-04-01) © 2020 The Author(s)This study investigated the fast pyrolysis behaviour of torrefied olive stones, fractionated olive stones and lignocellulosic commercial compounds. Olive stones were reacted in a continuous industrial t...
Effects of High Hydrostatic Pressure assisted degreasing on the technological properties of insect powders obtained from Acheta domesticus & Tenebrio molitor Bolat, Berkay; Ugur, Ahmet Erdem; Öztop, Halil Mecit; Alpas, Hami (Elsevier BV, 2021-03-01) © 2020 Elsevier LtdIn this study, two edible insect species; Acheta domesticus (house cricket) and Tenebrio molitor (yellow mealworm) were defatted using different extraction methods and characterized afterwards. The main ...
Development of a procedure to model the mechanical behavior of composites with embedded element method by considering the matrix non-linearity ŞIK, ALP; Gürses, Ercan; SABUNCUOĞLU, BARIŞ (2021-03-01) Embedded element method is considered to be a reliable and efficient method to analyze the mechanical behavior of composite materials. However, the predicted behavior of individual constituents can be inaccurate in case th...
Radiative heat transfer in the discrete element method using distance based approximations Johnson, Evan F.; Tarı, İlker; Baker, Derek Keıth (2021-03-01) A model to estimate radiative heat transfer in particle beds is developed for use in the Discrete Element Method (DEM). Monte Carlo ray tracing simulations are run to find the Radiation Distribution Factor (RDF) between pa...
Advances in protective layer-coating on metal nanowires with enhanced stability and their applications Bang, Junhyuk; Coşkun, Şahin; Pyun, Kyung Rok; Doğanay, Doğa; Tunca, Sensu; Koylan, Serkan; Kim, Dongkwan; Ünalan, Hüsnü Emrah; Ko, Seung Hwan (Elsevier BV, 2021-03-01) © 2020 Elsevier LtdThe demand for flexibility in transparent conductive electrodes(TCEs) is increasing due to the functionality demand and convenience of deformable electrodes. The high-cost and brittleness of the conventi...
Effect of inlet pressure on crude oil combustion -laboratory approach- Kök, Mustafa Verşan; Varfolomeev, Mikhail A.; Nurgaliev, Danis K. (Elsevier BV, 2021-03-01) In this research, the effect of inlet pressure on combustion behavior of medium and light crude oils was analyzed with TGA and DSC experiments. The ramped temperature combustion experiments were performed at constant heati...
Effect of mixture proportioning on the strength and mineralogy of magnesium phosphate cements Bilginer, Baki Aykut; Erdoğan, Sinan Turhan (Elsevier BV, 2021-3) Magnesium potassium phosphate cement (MKPC) has properties advantageous over ordinary portland cement such as quick setting and rapid strength gain. Although the effect of mixture proportioning on MKPC pastes has been stud...
Incremental multi-agent path finding Semiz, Fatih; Polat, Faruk (Elsevier BV, 2021-03-01) Existing multi-agent path finding (MAPF) algorithms are offline methods that aim at finding conflict-ree paths for more than one agent. In many real-life applications it is possible that a multi-agent plan cannot be fully ...
A non-conventional TD-NMR approach to monitor honey crystallization and melting Berk, Berkay; Grunin, Leonid; Öztop, Halil Mecit (Elsevier BV, 2021-03-01) © 2020 Elsevier LtdCrystallization of glucose is a natural process that could occur in honey due to several reasons and glucose is one of them. In this study, a non-conventional TD-NMR pulse sequence, Magic Sandwich Echo (...
models, EXperiments and high PERformance computing for Turbine mechanical Integrity and Structural dynamics in Europe (EXPERTISE) Özgüven, Hasan Nevzat(2021-2-28) Energy and Mobility are two primary driving forces in the 21st century. Development of incremental and disruptive technologies will have key impacts on the world’s societies, and on safety, security and competitiveness of ...
Monitoring freshness of chicken breast by using natural halochromic curcumin loaded chitosan/PEO nanofibers as an intelligent package Yıldız, Eda; Şümnü, Servet Gülüm; Kahyaoğlu, Leyla Nesrin (2021-02-15) © 2020 Elsevier B.V.Intelligent packaging is important to get information about real time quality of foods. The objective of this study was to develop an electrospun nanofiber halochromic pH sensor film using curcumin, chi...
Development of pea flour based active films produced through different homogenization methods and their effects on lipid oxidation Yıldız, Eda; Bayram, Ipek; Şümnü, Servet Gülüm; Şahin, Serpil; Ibis, Ozge Ilgın (Elsevier BV, 2021-02-01) The objective of this study was to investigate the effects of gallic acid incorporation and homogenization method (high-speed homogenization and ultrasonication) on the physicochemical characteristics of pea flour based ac...
Assessment of damage zone thickness and wall convergence for tunnels excavated in strain-softening rock masses Satici, Ozguer; Topal, Tamer (2021-02-01) There are two fundamental issues in all underground excavations, which are safety and economy. To ensure safety and expedite excavations, level of tunnel wall convergences and damage zone thickness should be predicted befo...