Experimental and theoretical study of low cost PEM fuel cell catalysts

... structure of a PEM fuel cell 39 2.2 Design and synthesis of fuel cell catalysts 40 2.2.1 Design of fuel cell catalyst at microscale level 40 2.2.2 Design of fuel cell catalyst ... EXPERIMENTAL AND THEORETICAL STUDY OF LOW COST PEM FUEL CELL CATALYSTS POH CHEE KOK (B.Sc.(Hons.)) University of Malaya (M.Sc.) National University of Singapor...

Ngày tải lên: 10/09/2015, 09:10

... Plant 2, in press Jarvis P (1975) Water transfer in plants In: Heat and Mass Transfer in the Biosphere Part Transfer Processes in Plant Environment (de Vries D.A & Afgan N.H., eds.), John Wiley & ... resistance of the transpirational pathway (Fig 3) It is possible to determine the parameters (2 resistances and capacitance) of the equivalent circuit having the same transfer...

Ngày tải lên: 09/08/2014, 04:20

Ngày tải lên: 21/06/2014, 02:20

... peroxide and catalyst concentration and of the initial temperature of the reactor on the reaction rate and the heat flow behavior were evaluated The hydrogen peroxide solution used was a 30% mass ... reaction rate with mass and energy balances The heat data obtained from the reaction calorimetry were fitted to a mathematical model based on mass and energy balances for...

Ngày tải lên: 22/07/2014, 03:20

... possibilities of the horizontal screw (A Stergiopoulou [5]) Experimental investigations of the first H.A.A.S.T To configure the horizontal Archimedean screw, from a design and experimental point of view, ... world horizontal archimedean screw turbine (photos A Stergiopoulou [5]) Some views of the initial steps of the 3-bladed horizontal axis Archimedean s...

Ngày tải lên: 09/09/2015, 10:06

... Figure 5.40 Temperature profiles of major components of the waste- heat driven pressurized adsorption chiller with input heat flux of 2.75 W cm-2 147 Figure 5.41 Effects of operation time on chiller ... variation of the heat of adsorption as a function of loading, which in turn depends on the pressure and temperature at which adsorption/ desorption occurs The...

Ngày tải lên: 11/09/2015, 10:01

... A COMPARITIVE STUDY OF LOW- COST BIOMATERIALS FOR THE REMOVAL OF CHROMIUM (VI/ III) FROM AQUEOUS SOLUTIONS SYAM KUMAR PRABHAKARAN (B.Tech (Hons.), NUS) A THESIS SUBMITTED FOR THE DEGREE OF MASTER ... studied for Sargassum, Ulva, used tea and coffee dusts The adsorption capacity of Ulva was lower compared to that of Sargassum The removal of...

Ngày tải lên: 15/09/2015, 22:51

... effect of hygro-thermal stresses into actual three-dimensional fuel cell model This model is used to investigate the hygro and thermal stresses in PEM fuel cell, which developed during the cell ... model of a PEM fuel cell has been developed to simulate the hygro and thermal stresses in PEM fuel cell, which are occurring during the cell operat...

Ngày tải lên: 05/09/2013, 14:58

... convective and diffusive heat and mass transfer, electrode kinetics, transport and phase-change mechanism of water, and potential fields in a micro PEM fuel cell with nature inspired gas flow channels ... fuel cells J Power Sources, 2004, 125(2), 40–51 [16] Maher A. R Sadiq Al-Baghdadi A CFD analysis of transport phenomena and electrochemical...

Ngày tải lên: 09/09/2015, 10:17

... The study of temperature distribution and changes of induction heating furnace can offer theory support to choose and determine a reasonable heating system in actual production by using numerical ... for experimental and numerical simulation The oscillating combustion temperature contours and the contours of path lines of temperature are shown in Figure...

Ngày tải lên: 05/09/2013, 14:59

... detectable in the cell wall-free mutant These findings stand in contrast to a subsequent analysis of singlegene knockout data indicating that E coli can only survive if at least L1-P-EtAmine and a lipid ... synthesis of unsaturated and saturated fatty acids, phospholipids (including cardiolipin), and lipid A It is important to study the metabolism of the glucosa...

Ngày tải lên: 22/03/2014, 21:20

... infection by inhibition of IFN signaling and blocking of the antiviral response [17] In this study we analyzed two variants of mumps virus V protein (VWT and VGly) derived from Urabe AM9 vaccine ... position 156 in the V protein (VGly) of HN-G1081 virus variant, whereas resistance to IFN was associated with preservation of wild-type phenotype in the V protei...

Ngày tải lên: 12/08/2014, 01:22

... Thanks Berge! Experimental Entanglement Witness Family Measurement and Theoretical Aspects of Quantum Tomography Experimental Entanglement Witness Family Measurement and blahakldasldjl;aklaa;klas ... many quantum information processing tasks Hence entanglement verification and detection is also of critical importance in quantum information science a...

Ngày tải lên: 08/09/2015, 15:27

... CATALYSTS DEVELOPMENT AND MECHANISTIC STUDY OF ETHANOL STEAM REFORMING FOR LOW TEMPERATURE H2 PRODUCTION CATHERINE CHOONG KAI SHIN (B.Eng & M.Eng National University of Singapore, ... Reaction Network of Ethanol Steam Reforming Ethanol steam reforming is an endothermic reaction which produces CO2 and H2 from CH3CH2OH and steam (Eqn 2.1) C2H5...

Ngày tải lên: 08/09/2015, 17:53

... semiconductor -based all- optical switches include semiconductor optical amplifier (SOA) and more recently silicon photonics Implementation of ultrafast silicon photonic switch is largely based on ... principles and switching operations of EUPT and EDPT 2.1.1 Energy-up photonic transistor based on AMOI scheme The all- optical operation of EUPT adopts the Absorptio...

Ngày tải lên: 09/09/2015, 08:14