catalytic modification of flammable atmosphere in aircraft fuel tanks
Sensibility study of flooding and drying issues to the operating conditions in PEM fuel cells
... 2076-2909 (Online) â2010 International Energy & Environment Foundation. All rights reserved. Sensibility study of flooding and drying issues to the operating conditions in PEM fuel cells ... due to the water diffusion from the cathode toward the anode. All these results are of great interest to the improvement of water management in PEMFC. They lead to a better understanding of ... at the cathode, internal cell humidification is highly inhomogeneous. Consequently, operating fuel cells are very often close to critical operating conditions, such as flooding and drying, ...
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Prediction of deformation and hygro-thermal stresses distribution in PEM fuel cell vehicle using threedimensional CFD model
... reserved. Prediction of deformation and hygro-thermal stresses distribution in PEM fuel cell vehicle using three-dimensional CFD model Maher A.R. Sadiq Al-Baghdadi Fuel Cell Research ... dynamics model of a PEM fuel cell has been developed to simulate the stresses inside the PEM fuel cell, which are occurring during fuel cell assembly (bolt assembling), and the stresses arise during ... 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...
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Design and development of major balance of plant components in solid oxide fuel cell system
... Design and development of major balance of plant components in solid oxide fuel cell system Wen-Tang Hong1, Tzu-Hsiang Yen2, Cheng-Nan Huang1, Hsueh-I Tan1, Yu Chao1 1 Institute ... and mass flow rate in the major BOP components so as to identify potential design improvements in the INER SOFC system in the future. In practice, optimizing the SOFC system performance using ... Abstract The balance of plant (BOP) of a Solid Oxide Fuel Cell (SOFC) system with a 2 kW stack and an electric efficiency of 40% is optimized using commercial GCTool software. The simulation...
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Regulating Phytonutrient Levels in Plants – Toward Modification of Plant Metabolism for Human Health
... The constituents of tomato fruit – the in uence of environment,nutrition, and genotype. Crit. Rev. Food. Sci. Nutr. 15: 20 5–2 80. 12 Regulating Phytonutrient Levels in Plants 313 plants yielded ... pigmentation of fruits. Cyanidin is the most common anthocyanidin, the othersbeing delphinidin, peonidin, pelargonidin, petunidin, and malvidin. Of the flavonols,quercetin, kaempferol, myricetin, and ... Modification of Plant Metabolism for Human Health Ilan LevinAbstract Plants constitute a major component of our diet, providing pigments andadditional phytonutrients that are thought to be essential for...
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Catalytic degradation of municipal waste plastics to produce fuel using betonite
... naphthenes. Keywords: waste plastics, catalytic degradation, Bentonite, municipal waste plastics, Polypropylene, LDPE, fuel range hydrocarbon, plastic to fuel, plastic degradation. Introduction ... (NCWSE 2013), SDMCET Dharwad Research Article Catalytic Degradation of Municipal Waste Plastics to Produce Fuel Range Hydrocarbons using Bentonite Roopa Farshia*, Chirayu Belthura, ... and Catalytic Cracking of Municipal Plastic Waste for Recovery of Gasoline Range Hydrocarbons, PhD thesis Engr. C. O. Osueke Engr. I. O. Ofondu, Conversion Of Waste Plastics (Polyethylene) To...
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Tài liệu Why Has the Cost of Fixed-Wing Aircraft Risen - A Macroscopic Examination of the Trends in U.S. Military Aircraft Costs over the Past Several Decades pptx
... excluded from the analysis. vi Why Has the Cost of Fixed-Wing Aircraft Risen? assessing the potential cost savings and cost avoidance that can be expected from the wider use of price-based acquisition. ... weighting on the proportion of each material in the final weight of a typical airframe.8 We recognize that the materials composition of fixed-wing aircraft has dramatically changed over the last ... maritime aircraft NASA National Aeronautics and Space AdministrationNATO North Atlantic Treaty OrganizationNAVAIR Naval Air Systems CommandNGC Northrop Grumman CorporationOPNAV Office of the...
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Tài liệu Báo cáo khoa học: Tryptophan tryptophylquinone cofactor biogenesis in the aromatic amine dehydrogenase of Alcaligenes faecalis Cofactor assembly and catalytic properties of recombinant enzyme expressed in Paracoccus denitrificans pptx
... et al. Cofactor biogenesis in TTQ-dependent AADHFEBS Journal 272 (2005) 58945909 ê 2005 FEBS 5895 Tryptophan tryptophylquinone cofactor biogenesis in the aromatic amine dehydrogenase of Alcaligenes ... Alcaligenes faecalis Cofactor assembly and catalytic properties of recombinant enzyme expressed in Paracoccus denitrificans Parvinder Hothi, Khalid Abu Khadra, Jonathan P. Combe, David Leys and Nigel ... infer, therefore, that both enzymes areidentical in their functional properties and that the TTQ cofactor is assembled correctly in the recombin-ant enzyme. Discussion The aromatic amine utilization...
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Báo cáo " Study on the characteristics and catalytic properties of Pt/SBA-15 in the selective oxidation of D-Glucose " potx
... image of the products of D-glucose oxidation on PS-1 catalyst On the other hand, the reaction on Pt/SBA-15 catalysts with pH control not only showed a high conversion, but also high D-gluconic ... From the results above, we found that both HNO3 and Pt/SBA-15 present a good conversion in the oxidation reaction of glucose. The conversion of the reaction reached 87.67% when using HNO3 ... alkaline solution continuously to maintain pH value at 9 during the oxidation process. In table 2, we also see that increasing the Pt contents led to decrease in catalytic activity. The average...
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Báo cáo khoa học: Investigating the role of the invariant carboxylate residues E552 and E1197 in the catalytic activity of Abcb1a (mouse Mdr3) docx
... E552 in NBD1 and E1197 in NBD2. Tofurther characterize the role of these residues in catalysis, we created in Abcb1a the single-site mutants E552D, N and A in NBD1, and E1197D,N and A in NBD2, ... further the role of the IC in the catalysis of ABC transporters, we created, in Abcb1a, six single-site mutants (E552D, N and A, and E1197D, N and A,) and three double-mutants(E552Q ⁄ E1197Q, E552Q ... created the following novelmutants: E552N, E1197N, E552Q ⁄ K1072R and K429R ⁄ E1197Q, to further characterize the role of the IC residues in the catalytic mechanism of Abcb1a. Asseen in Fig....
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Báo cáo khoa học: Mapping of the functional phosphate groups in the catalytic core of deoxyribozyme 10–23 potx
... modification on the catalytic activity of deoxyribozyme 10–23 The functional role of the individual phosphate groups in the catalytic core of deoxyribozyme 10–23 wasexamined by determination of the thio ... deoxyribozyme 10–23 In order to obtain a deeper insight into the functional role of the oxygen atoms of the P5 phosphate group in the catalytic core of deoxyribozyme 10–23, we pre-pared two PS deoxyribozymes ... of nucleoside in position 6 of the catalytic core We were interested in whether there are any other lig-ands in the 10–23 catalytic core that might be directlyinvolved in stabilization of the...
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Báo cáo khoa học: Local changes in the catalytic site of mammalian histidine decarboxylase can affect its global conformation and stability pptx
... for the dimer.Ó FEBS 2003 Conformational changes of histidine decarboxylase (Eur. J. Biochem. 270) 4379 Local changes in the catalytic site of mammalian histidine decarboxylase can affect its global ... decarboxylation and elimination of the fluoride, a reverse transaldimination can occur, so that anenamine form of the product can either leave the catalytic site or react again with the internal aldimine ... analogs in the active center. Furthermore,these findings also seem to indicate that the analogs can Fig. 5. Scheme of the HDC reactions with the natural substrate histidine and the histidine- analogs...
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Báo cáo khoa học: Catalytic mechanism of the primary human prostaglandin F2asynthase, aldo-keto reductase 1B1 – prostaglandin D2 synthase activity in the absence of NADP(H) pptx
... as the (a ⁄ b)8-barrel fold [ 3–6 ]. The nucleotidecofactor binds in an extended conformation at the top of the a ⁄ b-barrel, with the nicotinamide ring projectingdown into the center of the ... human prostaglandin F2a synthase, aldo-keto reductase 1B1 – prostaglandin D2 synthase activity in the absence of NADP(H) Nanae Nagata1, Yukiko Kusakari2, Yoshifumi Fukunishi3, Tsuyoshi Inoue2and ... PGF2a in the absence of NADPH or NADP+and in the presence of NADPH,respectively.AbbreviationsAKR, aldo-keto reductase; PG, prostaglandin; PGDS, prostaglandin D synthase; PGFS, prostaglandin...
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Báo cáo khoa học: Kinetic and crystallographic analyses of the catalytic domain of chitinase from Pyrococcus furiosus – the role of conserved residues in the active site pdf
... 2010)doi:10.1111/j.1742-4658.2010.07685.x The hyperthermostable chitinase from the hyperthermophilic archaeon Pyrococcus furiosus has a unique multidomain structure containing two chi-tin-binding domains and two catalytic domains, and ... analyses of the catalytic domain of chitinase from Pyrococcus furiosus – the role of conserved residues in the active site Hiroaki Tsuji1, Shigenori Nishimura1, Takashi Inui1, Yuji Kado2, ... Stereo figures of the model of the bound substrate in the AD2 E526A mutant (A) and D524A mutant (B). The structures of boundsugars and the side-chains of three acidic residues in the conserved DXDXE...
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Báo cáo hóa học: " Assessment of Microwave/UV/O3 in the Photo-Catalytic Degradation of Bromothymol Blue in Aqueous Nano TiO2 Particles Dispersion" pptx
... Desalination 207,87(2007)1632 Nanoscale Res Lett (2010) 5:1627–1632123 NANO EXPRESS Assessment of Microwave/UV/O3 in the Photo-Catalytic Degradation of Bromothymol Blue in Aqueous Nano TiO2 Particles ... thisfigure that the degradation rate increases with amount of TiO2 nano particle dosages.Effect of Microwave Intensity The results are shown in Fig. 5 as a function of microwaveintensity. The experiments ... higher degradation efficiency at higher microwave intensity, that microwavecontributed to degradation of BTB indirectly by increasingUV intensity. The thermal and non-thermal effects of microwave...
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catalytic modification of flammable atmosphere in aircraft fuel tanks
... Catalytic Modification of Flammable Atmosphere in Aircraft Fuel Tanks Thesis byInki Choi In Partial Fulfillment of the Requirementsfor theEngineer’s DegreeCalifornia Institute of TechnologyPasadena, ... is in the flammable region. By reducing the fuel concentrations through the reactor, the ullage gas can come to the arriving point finally which is out of flammable region. In this point, fuel ... as that of the starting point because they are both at the same altitude; the ground level. Fig. 1. Catalytic modification of flammable atmosphere in the aircraft fuel tank (b) Flammable...
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