Yayın tarihi için Mühendislik Fakültesi listeleme
Toplam kayıt 847, listelenen: 41-60
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Emission analysis of a commercial aircraft for different ranges
(Springer New York, 2013)In this chapter the lower take off cycle and total flight fuel consumptions and emissions of B737-400 commercial aircraft for selected routes are being calculated and evaluated for specified flight parameters. For case ... -
Environmental impact assessment of explosive volcanoes: A case study
(Springer New York, 2013)Although there are some parameters identified in the literature to quantify environmental impact of volcanic eruptions, e.g., Dust Veil Index (DVI), Volcanic Explosivity Index (VEI), and Volcanic Aerosol Index (VAI), no ... -
New parameters for reduction of heating-based greenhouse gas emissions: A case study
(Springer New York, 2013)In this study, the effect of indoor temperature for heating on reduction of carbon dioxide emissions in Turkey is studied under various conditions. Two new parameters are introduced, namely, carbon dioxide emission reduction ... -
Determination of natural radioactivity levels of some concretes and mineral admixtures in Turkey
(Asian Journal of Chemistry, 2014)Nine concrete samples with or without mineral admixtures have been analyzed for their naturally occurring radionuclide of Ra-226, Th-232 and K-40 using HPGe gamma spectrometry. Also, concrete raw materials such as aggregate, ... -
Optical and structural properties of bismuth doped ZnO thin films by sol-gel method: urbach rule as a function of crystal defects
(Polish Acad Sciences Inst Physics, 2014)Bismuth (Bi) doped zinc oxide (ZnO:Bi) thin films were prepared on glass substrates by sol gel spin coating technique using homogeneous precursor solutions, and effects of Bi doping on the structural and optical properties ... -
Solutıon of a recedıng contact problem usıng an analytıcal method and a fınıte element method
(Mathematical Science Publ, 2014)In this study, a receding contact problem for two elastic layers supported by a Winkler foundation is handled using two different methods such as an analytical method and a finite element method. Firstly, the problem is ... -
The effect of the substitution of Cu for Mn on magnetic and magnetocaloric properties of Ni50Mn34In16
(Elsevier Science Bv, 2014)The influence of Cu substitution for Mn on magnetic and magnetocaloric properties has been investigated in Ni50Mn34-xCuxIn16 (x=1.3 and 1.6) Hensler alloys by using calorimetric and magnetic measurements. the temperature ... -
Characteristic evaluation on spray-deposited WFTO thin films as a function of W doping ratio
(Nonferrous Metals Soc China, 2014)In this work, F and F + W simultaneously doped SnO2 highly transparent conducting thin films were deposited on glass substrates at (500 +/- A 5) A degrees C temperature by the spray pyrolysis method. Microstructural, ... -
Investigation of Cd1-xCoxS diluted magnetic semiconductor thin films fabricated by chemical bath deposition method
(Elsevier Science Sa, 2014)Chemical bath deposition method was used for preparation of Cd1-xCoxS thin films. the effects of Co doping and thermal annealing on structural, optical, electrical and magnetic properties of CdS thin films were investigated. ... -
Influence of Ge content and annealing conditions on the PL properties of nc-Si1-xGex embedded in SiO2 matrix in weak quantum confined regime
(Elsevier Science Bv, 2014)Fabrication of Si (nc-Si), Ge (nc-Ge), and Si1-xGex (nc-Si1-xGex) nanocrystals embedded in SiO2 matrix is achieved by thermal annealing of magnetron-sputtered thin films. Effects of annealing conditions, namely duration ... -
Structural characterizations and optical properties of InSe and InSe: Ag semiconductors grown by Bridgman/Stockbarger technique
(Elsevier, 2014)Undoped InSe and Ag doped InSe (InSe:Ag) single crystals have been grown by using the Bridgman/Stockbarger method. the freshly cleaved crystals have mirror-like surfaces even without using mechanical treatment. the structure ... -
The magnetic and magnetocaloric properties of CoMnGe1-xGax alloys
(Elsevier Science Sa, 2014)The magnetic and magnetocaloric properties of CoMnGe1 Ga-x(x) (0.02 <= x <= 0.063) alloys have been investigated by using calorimetric, X-ray diffraction and magnetic measurements. Our results show that the structural and ... -
Sustainability assessment of PW6000 turbofan engine: an exergetic approach
(Inderscience Enterprises Ltd, 2014)In this paper, theory, methodology and example application are developed and shown for a PW6000 high-bypass turbofan engine in terms of exergo-sustainable perspective. To obtain exergetic sustainability indicators, first, ... -
Supercritical conversion of biomass
(Blackwell Science Publ, 2014)The focus of this chapter is biomass conversion in the supercritical water. the two main processes of the supercritical conversion of biomass are the supercritical water gasification and the supercritical water oxidation. ... -
Hydrothermal gasification of Rosa Damascena residues: Gaseous and aqueous yields
(Elsevier, 2014)The gasification of Rosa Damascena residues - by-products of the rose-oil industry - was investigated under hydrothermal conditions at 500 degrees C and 600 degrees C, 35-45 MPa pressure with a reaction time of 1 h. the ... -
A new approach to determine the outdoor temperature distributions for building energy calculations
(Pergamon-Elsevier Science Ltd, 2014)This study formulated annual, monthly and hourly ambient temperature distributions for simplifying the calculation of cooling and heating degree-hours. in this regard, Turkey was selected as an application country, of which ... -
Effects of ceramic based pastes on electrochemical performance of solid oxide fuel cells
(Elsevier Sci Ltd, 2014)Various commercially available anode and cathode materials are investigated as the anode and cathode contact paste, respectively, for solid oxide fuel cells. in order to obtain a printable paste, chosen materials are mixed ... -
Single and multiple doping effects of silicon-boron and fluorine on ZnO thin films deposited with sol-gel spin coating technique
(Springer, 2014)Undoped, Si and B single doped, Si-B co-doped and Si-B-F triple doped ZnO thin films were grown by sol-gel spin coating method. Effects of these doping elements on microstructural, morphological and optical properties were ... -
Comparing advanced exergetic assessments of two geothermal district heating systems for residential buildings
(Elsevier Science Sa, 2014)Advanced exergy analysis method has been increasingly utilized in analyzing and assessing the performance of energy-related systems in recent years due to more deeply investigating the exergy destructions. in this study, ...