Experimental and theoretical study of low cost PEM fuel cell catalysts
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 Singapore Supervisors: Prof Feng ... capacitive cell, (b) simplified Randles cell and (c) Randles cell 18 Figure 2.1 Construction of a single cell for PEM fuel cell 40 Figure 3.1 Schematic illustration of synthesis of Pt catalyst...
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Báo cáo lâm nghiệp: " Diurnal evolution of water flow and potential in an individual spruce: experimental and theoretical study" pps
... 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 function (= transpiration ... versus absorption) This transformation allows those interested in water proportion balance of drainage basins to version as a subrnodel use this simplified Discussion and Conclusions This model...
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Báo cáo nghiên cứu khoa học: " EXPERIMENTAL AND THEORETICAL ANALYSIS OF A CRITICAL CHEMICAL REACTION: DECOMPOSITION OF HYDROGEN PEROXIDE (H2O2)" potx
... 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 a batch reactor coupled ... equations and to compare predictions to experimental data in order to estimate the reaction rate constant, k, and the order of the reaction, m The application of reaction calorimetry to obtain...
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Experimental and theoretical research of zero head innovative horizontal axis archimedean screw turbines
... 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 screw rotor are given in Figure Figure Views of ... characteristic views of experimental tests in this hydraulic channel before the installation of the Horizontal Axis Archimedean Screw Turbine are given in Figure Figure Four characteristic views of experimental...
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Experimental and theoretical studies of waste heat driven pressurized adsorption chillers
... 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 heat of adsorption, Qst can be measured experimentally ... Figure 5.13 Isosteric heat of adsorption for Maxsorb III-R507a 124 Figure 5.14 Isosteric heat of adsorption for ACF A20-R134a 124 Figure 5.15 Isosteric heat of adsorption for ACF A20-R507a...
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A comparative study of low cost biomaterials for the removal of chromium (VI III) from aqueous solutions
... 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 hexavalent chromium by seaweeds was observed as a process ... storage of the algal sample 3.2.2 Ulva The green colored marine algae Ulva fasciata sp., used in the present study, was collected from the coastal belt of Thiruvananthapuram, Kerala, India The...
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Prediction of deformation and hygro-thermal stresses distribution in PEM fuel cell vehicle using threedimensional CFD model
... 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 operation due to the changes of temperature and relative ... hydration and temperature [8-10] Al-Baghdadi [11] incorporated the effect of hygro and thermal stresses into non-isothermal threedimensional CFD model of PEM fuel cell to simulate the hygro and thermal...
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Analysis of transport phenomena and electrochemical reactions in a micro PEM fuel cell with nature inspired flow field design
... 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 reactions in a tubular-shaped PEM fuel cell Int J of Energy ... Sadiq Al-Baghdadi A CFD analysis on the effect of ambient conditions on the hygrothermal stresses distribution in a planar ambient air-breathing PEM fuel cell International Journal of Energy and...
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Experimental investigations and CFD study of temperature distribution during oscillating combustion in a crucible furnace
... 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 Figures and The temperature distribution during ... different Engineering areas and R&D His main areas of interest are combustion, gasification and new energy developments He has published many articles in various International Journals and Conferences...
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Báo cáo khoa học: Theoretical study of lipid biosynthesis in wild-type Escherichia coli and in a protoplast-type L-form using elementary flux mode analysis potx
... 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 glucosamine-based lipid A, because it is a major ... substrates In contrast, side modes use products of interest as substrates An example of such a side mode is an EFM that converts lipid A into lipid A (ca) Redundancy as a main characteristic of the wild-type...
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Báo cáo y học: "Interaction of mumps virus V protein variants with STAT1-STAT2 heterodimer: experimental and theoretical studies" pps
... 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 protein (VWT) of HN-A1081 Virus variant In the ... study we experimentally tested the interaction of VWT and VGly proteins of Urabe AM9 mumps virus variants with proteins of the IFN signaling pathway, finding differences in their capacity to...
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EXPERIMENTAL ENTANGLEMENT WITNESS FAMILY MEASUREMENT AND THEORETICAL ASPECTS OF QUANTUM TOMOGRAPHY
... 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 and quantum computation Entanglement witnesses ... Conclusion and Outlook Bibliography 125 XI VIII Contents List of Figures 2.1 Geometry of states and entanglement witnesses: The set of separable state ρsep is convex, whereas the set of entangled...
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Catalysts development and mechanistic study of ethanol steam reforming for low temperature h2 production
... 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) C2H5OH + 3H2O → 2CO2 + 6H2 (2.1) Due to ... preadsorbed of steam followed by continuously flow of ethanol and a heating ramp of 15 K min-1 over (a) Pt/Ca-Al2O3 and (b) Rh/Ca-Al2O3 155 Figure 6.9 Product distribution of ethanol steam reforming...
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Experimental realization and theoretical studies of novel all optical devices based on nano scale waveguides
... 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 Absorption Manipulation of Optical Interference ... of transitions between optical and electrical domains, i.e Optical- toElectrical (OE) and Electrical-to -Optical (EO) or OEO conversions, which poses a lot of power consumption, space occupation,...
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Từ khóa: design and development of low cost friction stir welding machineconceptual and empirical study of financial statementmanufacturer apos s job order cost card and the computation of unit costexperimental and mathematical simulation of oxygen transport by hemoglobin based blood substitutehyperlipidaemia and three types of low serum lipoproteinsconceptual operational and theoretical overview of african american health related disparities for social and behavioral interventions4 experimental and clinical applications of tissue engineering in omfsmolecular epidemiology and the study of gene environment interactionslamma and raman study of oxidation states of chromium in aerosols application to industrial hygieneoverview in the application of fem in mining and the study of case stress analysis in pulleys oimmunoprecipitation immuno blotting and immunohistochemical study of actin α actinin 4 α tubulin and myosinschmidt f l amp hunter j e 1998 the validity and utility of selection methods in personnel psychology practical and theoretical implications of 85 years of research findings psychological bulletin 124 262 274brown the cell nucleus and the study of pollengoods common inputs and the efficiency of full cost allocations pp 336 347experimental and analytical studies of surface generation in evcBáo cáo thực tập tại nhà thuốc tại Thành phố Hồ Chí Minh năm 2018Một số giải pháp nâng cao chất lượng streaming thích ứng video trên nền giao thức HTTPNghiên cứu vật liệu biến hóa (metamaterials) hấp thụ sóng điện tử ở vùng tần số THzGiáo án Sinh học 11 bài 13: Thực hành phát hiện diệp lục và carôtenôitGiáo án Sinh học 11 bài 13: Thực hành phát hiện diệp lục và carôtenôitĐỒ ÁN NGHIÊN CỨU CÔNG NGHỆ KẾT NỐI VÔ TUYẾN CỰ LY XA, CÔNG SUẤT THẤP LPWANQuản lý hoạt động học tập của học sinh theo hướng phát triển kỹ năng học tập hợp tác tại các trường phổ thông dân tộc bán trú huyện ba chẽ, tỉnh quảng ninhPhát triển du lịch bền vững trên cơ sở bảo vệ môi trường tự nhiên vịnh hạ longPhát hiện xâm nhập dựa trên thuật toán k meansNghiên cứu khả năng đo năng lượng điện bằng hệ thu thập dữ liệu 16 kênh DEWE 5000Thơ nôm tứ tuyệt trào phúng hồ xuân hươngChuong 2 nhận dạng rui roTổ chức và hoạt động của Phòng Tư pháp từ thực tiễn tỉnh Phú Thọ (Luận văn thạc sĩ)Giáo án Sinh học 11 bài 14: Thực hành phát hiện hô hấp ở thực vậtGiáo án Sinh học 11 bài 14: Thực hành phát hiện hô hấp ở thực vậtGiáo án Sinh học 11 bài 14: Thực hành phát hiện hô hấp ở thực vậtGiáo án Sinh học 11 bài 14: Thực hành phát hiện hô hấp ở thực vậtĐổi mới quản lý tài chính trong hoạt động khoa học xã hội trường hợp viện hàn lâm khoa học xã hội việt namMÔN TRUYỀN THÔNG MARKETING TÍCH HỢPTÁI CHẾ NHỰA VÀ QUẢN LÝ CHẤT THẢI Ở HOA KỲ