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Toplam kayıt 31, listelenen: 21-30
Smart monopole antenna with pattern and frequency reconfiguration characteristics based on programmable metasurface
(Wiley, 2019)
Metasurfaces having ultrathin and planar structure with sub-wavelength unit cell, have recently gained significant potential for use thanks to their control capabilities over the electromagnetic waves from microwave to the ...
Two new control strategies: For hydrogen fuel saving and extend the life cycle in the hydrogen fuel cell vehicles
(Elsevier, 2019)
With the acceleration of the development process of hydrogen fuel cell electric vehicles (HFCEV), it has become very important to maximize the energy stored in the vehicle and to use the vehicle with high efficiency. This ...
Gain-phase margins-based delay-dependent stability analysis of pitch control system of large wind turbines
(Sage Publications Ltd, 2019)
This paper investigates the effect of gain and phase margins (GPMs) on the delay-dependent stability analysis of the pitch control system (PCS) of large wind turbines (LWTs) with time delays. A frequency-domain based exact ...
High Sensitive Metamaterial Sensor for Water Treatment Centres
(Springer International Publishing Ag, 2019)
In this study, a high sensitive metamaterial sensor has been designed to detect quality of water for water treatment centre. The water samples have been obtained and electrical properties have been measured in microwave ...
An electromagnetic non-destructive approach to determine dispersion and orientation of fiber reinforced concretes
(Elsevier, 2019)
Including fibers in concretes improves their mechanical properties such as flexural strength, impact load resistance and limited crack propagation. The dispersion, orientation and types of the fibers placed in the concretes ...
Pattern reconfigurable metasurface to improve characteristics of low profile antenna parameters
(Wiley, 2019)
This article proposes a mushroom-shaped electromagnetic band gap (EBG) structure for the antenna parameter enhancement of low profile antennas in 5 to 15 GHz regime. Three different type antennas including a dipole antenna, ...
Solar energy harvesting with ultra-broadband metamaterial absorber
(World Scientific Publishing Co. Pte Ltd, 2019)
In this study, a novel metamaterial absorber (MA) is designed and numerically demonstrated for solar energy harvesting. The structure is composed of three layers with different thicknesses. The interactions of three layers ...
Fuzzy Logic Based Sinter RDI Optimization
(Ieee, 2019)
The RDI (Reduction Degradation Index) is an important quality criterion of sinter. In this study, a fuzzy logic based model has been developed to obtain the desired RDI value continuously. The expected RDI value for stable ...
Review of fuel cells to grid interface: Configurations, technical challenges and trends
(Elsevier, 2019)
With the development of clean energy technologies, the integration studies of electrical grids and fuel cells have increased significantly in research and practical implementations because of increasing power demand, ...
Determination of the liquid chemicals depending on the electrical characteristics by using metamaterial absorber based sensor
(Elsevier, 2019)
In this paper, the metamaterial absorber based chemical sensor has been designed and measured experimentally. The proposed structure composed of gammadion copper resonator on the top of the FR4 substrate. There is an air ...