Güncel Gönderiler: Mühendislik ve Doğa Bilimleri Fakültesi
Toplam kayıt 1307, listelenen: 381-400
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A Novel Software for Automatic Calibration Factor Measurement of RF Power Sensors
(IInstitute of Electrical and Electronics Engineers Inc., 2022)In this letter, a software for calibration factor (CF) measurement of radio frequency (RF) power sensors (PS) by using VNA-based direct comparison transfer method (VBDCTM) was developed on C# platform. Measurements were ... -
Low temperature thermoelectric properties of Na-substituted Bi2Ca2Co2Oy ceramics fabricated via LFZ technique
(Elsevier, 2022)In this work, Bi2Ca2-xNaxCo2Oy with x = 0.0, 0.05, 0.10, and 0.125 thermoelectric ceramic materials have been produced by the classical solid-state route, followed by texturing through the laser floating zone (LFZ) method. ... -
Electrospinning of PVDF nanofibers incorporated cellulose nanocrystals with improved properties
(Springer, 2022)Polyvinylidene fluoride (PVDF) nanofibers with cellulose nanocrystals (CNCs) were produced with the electrospinning technique at the CNC loading rates of 0.25, 0.50, 0.75, and 1 wt%. CNCs were obtained with acid hydrolysis ... -
Convergence Analysis and Approximate Optimal Temporal Step Sizes for Some Finite Difference Methods Discretising Fisher's Equation
(Frontiers Media S.A., 2022)In this study, we obtain a numerical solution for Fisher's equation using a numerical experiment with three different cases. The three cases correspond to different coefficients for the reaction term. We use three numerical ... -
Enhanced optoelectronic properties of magnetron sputtered ITO/Ag/ITO multilayers by electro-annealing
(AVS Science and Technology Society, 2022)Indium tin oxide/silver/indium tin oxide (ITO/Ag/ITO) multilayers have attracted much attention to fulfill the growing need for high-performance transparent conducting oxide electrodes. To make these transparent multilayers ... -
Modüler çok seviyeli dönüştürücüler için genelleştirilmiş bir kapasitör gerilim dengeleme şeması ve örnekleme frekansı analizi
(Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi, 2022)Modüler çok seviyeli dönüştürücüler (MÇD), modüler yapısı ve kaliteli çıkış dalga formu sayesinde endüstriyel uygulamalarda sıklıkla kullanılmaktadırlar. En yakın seviye modülasyon (ESM) yöntemi MÇD uygulamalarında tercih ... -
Powder-pack boronizing of CoCrFeNiAl0.5Nb0.5 HEA: Modeling of kinetics, microstructural, mechanical, and tribological characterizations
(Elsevier, 2022)This study is dedicated to the detailed investigation of boronization kinetic, microstructural, mechanical, and wear properties of high entropy alloys (HEAs) considering their sluggish diffusion effect properties. A ... -
Chemiresistive CuO sensors for label-free C-reactive protein detection
(Elsevier, 2022)In this study, we developed fast and highly sensitive, label-free Ca-doped cupric oxide (CuO) based che-miresistive biosensors to detect C-reactive protein (CRP). The Successive Ionic Layer Adsorption and Reaction (SILAR) ... -
Integrating electric vehicles as virtual power plants: A comprehensive review on vehicle-to-grid (V2G) concepts, interface topologies, marketing and future prospects
(Elsevier, 2022)Global factors such as energy consumption and environmental issues encourage the utilization of electric vehicles (EVs) as alternative energy sources besides transportation. Recently, the development of virtual power plants ... -
Electrospinning of PVDF nanofibers incorporated cellulose nanocrystals with improved properties
(Springer, 2022)Polyvinylidene fluoride (PVDF) nanofibers with cellulose nanocrystals (CNCs) were produced with the electrospinning technique at the CNC loading rates of 0.25, 0.50, 0.75, and 1 wt%. CNCs were obtained with acid hydrolysis ... -
Pinch point determination and Multi-Objective optimization for working parameters of an ORC by using numerical analyses optimization method
(Elsevier, 2022)In parallel with Kyoto, Paris and the green production agreements, the nowadays crucial subject is minimising energy consumption, increasing renewable energy usage and recovering waste heat. When it comes to waste heat, ... -
Sinusoidally located concrete metastructures for attenuation of seismic surface vibrations
(Springer, 2022)In this numerical and experimental study, we designed sinusoidal located concrete-based boreholes which are candidate for seismic shielding applications. To attenuate seismic wave transmission in an area, proposed design ... -
Tree-shaped fractal metamaterial multiband absorber for C- and X-band applications
(Taylor and Francis Ltd., 2022)Recently, multiband metamaterial absorbers have gained considerable attention from research and development communities due to their applications in filtering, stealth, and sensing. However, these multiband absorbers are ... -
Sliding mode control for fuel cell supported battery charger in vehicle-to-vehicle interaction
(Wiley, 2022)In typical vehicle-to-vehicle (V2V) charging systems, energy transfer is provided from a battery electric vehicle (BEV) to charge the energy storage unit of another BEV. In this study, the utilization of a fuel cell electric ... -
Effect of the boriding environment on the wear response of laser-clad AlCoCrFeNi high entropy alloy coatings
(Elsevier, 2022)Laser-clad AlCrFeCoNi high entropy alloy (HEA) coatings, produced on the surface of AISI 316 L stainless steel, were pack-borided at 1000 °C for 4 h in open air, high-purity Ar and vacuum environments. The HEA, which had ... -
Surface integrity characteristics in wire-EDM of HfTaTiVZr refractory high entropy alloy
(Taylor and Francis Ltd., 2022)Refractory high entropy alloys (RHEAs) with multiple principal elements constitute a new paradigm in alloy design and have gained recent interest for advanced technical applications due to their unique properties and ... -
A novel fractional operator application for neural networks using proportional Caputo derivative
(Springer, 2022)In machine learning models, one of the most popular models is artificial neural networks. The activation function is one of the important parameters of neural networks. In this paper, the sigmoid function is used as an ... -
DeepOCT: An explainable deep learning architecture to analyze macular edema on OCT images
(Elsevier, 2022)Macular edema (ME) is one of the most common retinal diseases that occur as a result of the detachment of the retinal layers on the macula. This study provides computer-aided identification of ME for even small pathologies ... -
A review on drilling of FML stacks with conventional and unconventional processing methods under different conditions
(Elsevier, 2022)Fiber and metal materials used in Fiber Metal Laminate (FML) have different machinability properties due to their different structures. This case has made it a research topic to obtain good hole quality in these materials. ... -
A polarization-insensitive triple-band perfect metamaterial absorber incorporating ZnSe for terahertz sensing
(Institute of Physics, 2022)In this work, a triple-band polarization-insensitive metamaterial structure with perfect absorption is proposed by incorporating a zinc selenide (ZnSe) spacer. The structure was optimally designed by varying the type of ...
