Ara
Toplam kayıt 58, listelenen: 21-30
Exergy analysis of a combined power and cooling cycle
(Polish Academy of Sciences, 2016)
Ammonia-water power cycles are important for efficient utilization of low temperature heat sources such as geothermal, solar, waste heat sources, etc. For some special conditions ammonia-water power cycle is an important ...
The effects of fuel type in synthesis of NiFe2O4 nanoparticles by microwave assisted combustion method
(Institute of Physics Publishing, 2016)
In this study, it was investigated the effects of the used fuels on structural, morphological and magnetic properties of nanoparticles in nanoparticle synthesis with microwave assisted combustion method with an important ...
Medium access control protocols for wireless sensor networks with ambient energy [Kablosuz Algilayici A?larda Ortam Enerjisi Kullanan Ortam Erişim Protokolleri]
(Institute of Electrical and Electronics Engineers Inc., 2016)
Wireless sensor networks (WSNs) have recently been a popular research area with a broad range of applications. One of the most significant constraints of WSNs is energy limitation of sensor nodes. Therefore, energy-efficiency ...
Some physical properties of Co-doped GaAs thin films grown by thermionic vacuum arc
(American Institute of Physics Inc., 2016)
Cobalt doped GaAs thin films with the thickness of 100 nm and 200 nm were deposited on glass substrates by a thermionic vacuum arc system. The optical and surface properties were investigated as functions of the film ...
Investigation of the thickness effect to impedance analysis results AlGaN acoustic sensor
(American Institute of Physics Inc., 2016)
In this study, AlGaN acoustic sensors were deposited on aluminum metal substrate by thermionic vacuum arc (TVA) method, for the first time. Impedance analyses of the fabricated acoustic sensors were investigated for the ...
Impedance analysis of nano thickness layered AlGaN acoustic sensor deposited by thermionic vacuum arc
(American Institute of Physics Inc., 2016)
In this study, AlGaN acoustic sensor was deposited on aluminum metal substrate by thermionic vacuum arc (TVA) method for the first time. Gallium materials are used in many applications for optoelectronic device and ...
Investigation of the surface free energy of the ITO thin films deposited under different working pressure
(American Institute of Physics Inc., 2016)
This study discusses the influence of working pressure on the surface energy of the ITO thin films produced by radio frequency magnetron sputtering method. Optical tensiometer (Attension Theta Lite) is used for evaluating ...
Effect of natural aging on RT and HSR superplasticity of ultrafine grained Zn-22Al alloy
(Trans Tech Publications Ltd, 2016)
Zn–22Al alloy was processed using a well-designed two-step equal channel angular extrusion/pressing (ECAE/P), and ultrafine-grained (UFG) microstructure with 200 nm grain size was achieved. UFG Zn-22Al was subjected to ...
Building parameter analysis with S-UTD-CH model in multiple diffraction [Çoklu Kirinimlarda EKDZ Modeliyle Bina Parametrelerinin De?işiminin Analizi]
(Institute of Electrical and Electronics Engineers Inc., 2015)
Electromagnetic wave propagation models are used in radio planning tool and coverage prediction. These models are based on ray tracing technique or numerical. Slope UTD with convex hull model is a model which has less ...
Thermoeconomic analyses of steam injected gas turbine cogeneration cycles
(Polish Academy of Sciences, 2015)
In this study, three different gas turbine cogeneration systems that are preheating air, preheating air-fuel and simple cycles where steam injected in to combustion chamber are analyzed. The effects of steam injection on ...