Güncel Gönderiler: Fakülteler
Toplam kayıt 1807, listelenen: 481-500
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A study on microstructure and mechanical performance of gas metal arc welded AISI 304 L joints
(Wiley, 2022)Arc welding is a widely applied process in the fabrication of stainless steel structures. Various difficulties may arise in joining of these steels, particularly if high heat input is used. The main aim of this study is ... -
Enhanced Sensing Capacity of Terahertz Triple-Band Metamaterials Absorber Based on Pythagorean Fractal Geometry
(MDPI, 2022)A new design of a triple band perfect metamaterial absorber based on Pythagorean fractal geometry is proposed and analyzed for terahertz sensing applications. The proposed design showed an enhanced sensing performance and ... -
Mechanisms of nonlinear optical absorption in (GeO2)1-x–(PbF2)x (0.1 ≤ x ≤ 0.3) modified germanate glasses
(Elsevier, 2022)The structural, optical, and nonlinear absorption properties of (GeO2)1-x–(PbF2)x (0.1 ≤ x ≤ 0.3) glasses synthesized by conventional melting and quenching technique were investigated. Bandgap energies and Urbach energies ... -
Novel Research on the Use of Multi-Wall Carbon Nanotubes Functionalized with Copper Oxide Nanoparticles in the Adsorptive Desulphurization of Crude Oil: Laboratory Research
(Institute of Physics, 2022)Crude oil is known as liquid hydrocarbon, which is formed as a result of the metamorphosis of organic matter on earth. Crude oil is a complex mixture containing paraffin, naphthenes, olefins, aromatic compounds and a small ... -
Effect of Chemical Composition of Boriding Agent on the Optimization of Surface Hardness and Layer Thickness on AISI 8620 Steel by Solid and Liquid Boriding Processes
(Sciendo, 2022)Surfaces of cam shafts made of AISI 8620 steels were hardened by boriding processes in both solid and liquid mediums. Various chemical agents were used to achieve boride layers on the surfaces of the cam shafts in these ... -
An Assessment of Transforming a City into a Construction Sector Metabolism via Industrial Symbiosis Implementations
(Springer, 2022)This study examines waste flow network differences concerning future industrial symbiosis (IS) implementations to assess the possibility of transforming an entire city into an industrial ecosystem and thereby increasing ... -
Phishing Detection System Using Extreme Learning Machines with Different Activation Function based on Majority Voting
(Gazi Üniversitesi, 2022)Phishing is a type of software-based cyber-attack carried out to steal private information such as login credentials, user passwords, and credit card information. When the security reports published in recent years are ... -
A vanadium dioxide-based metamaterial with quatrefoil and circle loaded structure on flexible polyamide substrate for terahertz applications
(Frontiers Media S.A., 2022)In this study, a novel broadband metamaterial (MTM) absorber is proposed, which is based on vanadium dioxide (VO2) resonators coated onto a flexible polyamide substrate. The VO2 resonator is in the form of a quatrefoil and ... -
Improving Asphalt Binder and Hot Mix Asphalt Aging Properties by Adding Synthetic Polyboron and Organic Magnesium Oxide
(Springer, 2022)In this study, asphalt binders were modified with polymeric triethylene glycol-based polyboron (PTEGB) and organic-based magnesium oxide (OBMO) at different concentrations. The materials used as additives were synthesized ... -
Nonlinear optical performance and optical limiting of germanate glasses modified with PbF2 and B2O3 induced by nanosecond pulsed laser
(Elsevier, 2022)In this work, GeO2 modified with PbF2 and B2O3 glasses were synthesized by conventional melting and quenching technique to investigate the effect of modifier network on its linear and nonlinear optical properties. Linear ... -
First record of microplastic occurence at the commercial fish from Orontes River
(Elsevier, 2022)Freshwater environments are more sensitive to anthropogenic influences and usually contain higher concentrations of pollutants than marine environments. Microplastic pollution causes additional stress on freshwater animals; ... -
Automatic segmentation of COVID-19 from computed tomography images using modified U-Net model-based majority voting approach
(Springer, 2022)The coronavirus disease (COVID-19) is an important public health problem that has spread rapidly around the world and has caused the death of millions of people. Therefore, studies to determine the factors affecting the ... -
Statistical analysis of maritime piracy cases in world territorial waters
(Springer, 2022)In today’s international trading system, most cargoes are transported by sea. In parallel with increasing trade volume, shipping trade and thus maritime traffic are also increasing. The smooth functioning of global trade ... -
Capacitance-based stress self-sensing in asphalt without electrically conductive constituents, with relevance to smart pavements
(Elsevier, 2022)The capacitance-based stress self-sensing in asphalt without device or functional constituent incorporation is reported for the first time, with relevance to smart pavements. Stress sensing enables weighing. Without the ... -
Novel decision-making strategy for working fluid selection in Organic Rankine Cycle: A case study for waste heat recovery of a marine diesel engine
(Elsevier, 2022)The Organic Rankine Cycle (ORC) is receiving increasing attention as a waste heat recovery system. However, it is still a major challenge to quickly and practically choose the appropriate one among dozens of working fluids, ... -
WEDM machining of MoNbTaTiZr refractory high entropy alloy
(Elsevier, 2022)Refractory high entropy alloys (RHEAs) have shown great promise for a multitude of advanced engineering applications due to their high mechanical stability from cryogenic temperatures to 1600 °C. However, the low ductility ... -
Why Kalina (Ammonia-Water) cycle rather than steam Rankine cycle and pure ammonia cycle: A comparative and comprehensive case study for a cogeneration system
(Elsevier, 2022)There are many studies on the Kalina cycle and steam Rankine cycles. However, there are not enough comparative and descriptive studies on why the Kalina cycle or steam Rankine cycle should be selected. In addition to that, ... -
A comprehensive performance analysis of meta-heuristic optimization techniques for effective organic rankine cycle design
(Elsevier, 2022)Optimizing the operating parameters is of great importance to improve Organic Rankine Cycle (ORC) system efficiency. Nowadays, meta-heuristic algorithms are widely used to obtain fast and effective solutions. However, it ... -
Detailed low temperature studies on thermoelectric performance of K-doped Bi2Ca2Co2Oy ceramics fibers
(Institute of Physics, 2022)The effect of K substitution for Ca in Bi2Ca2-xKxCo2Oy (x = 0.0, 0.05, 0.075, 0.10, and 0.125) thermoelectric ceramics, produced via laser floating zone (LFZ) method, have been systematically investigated. XRD patterns are ... -
Dynamic models for air-breathing and conventional polymer electrolyte fuel cells: A comparative study
(Elsevier, 2022)Two dynamic models have been built for air-breathing and conventional polymer electrolyte fuel cells (PEFCs) in order to comparatively investigate the impacts of some key parameters on the transient response to load ...
