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...

Ngày tải lên: 09/09/2015, 10:17

... used to analyse and evaluate the performance of a planar and a tubular-shaped PEM fuel cell 2.1 Computational domain The full computational domains for the planar and tubular-shaped PEM fuel cell ... conditions are specified at all external boundaries of the computational domain as well as boundaries for various mass and scalar equations inside the computationa...

Ngày tải lên: 05/09/2013, 14:58

... 0.443 beech spruce beech spruce beech ● rain; * snow; ●* rain and snow Statistical significance of differences in the snow water equivalent in the spruce and beech stands in the period of snow accumulation ... research station, the accumulation and intensity of snow melting have continually been studied within a broad research programme...

Ngày tải lên: 07/08/2014, 04:20

... gene signaling pathway analysis has identified gene signals that are remarkably activated in AT-MSC-Hepa, and these signals are also up-regulated in whole liver Therefore, the microarray analysis ... protocol, and then treated with deoxyribonuclease (DNase I, amplification grade; TaKaRa, Kyoto, Japan) Microarray analysis and data mining (Aligent array) A one-color microarray...

Ngày tải lên: 30/03/2014, 04:20

... flowering and no evidence of mating between a female P nigra and a male P nigra cv Italica growing about Paternity analysis of P nigra offspring 350 m apart in Scotland However, flowering of P nigra cv ... located in the total plantation) were analysed using 14 SSR loci (Tab II) Furthermore, P nigra cv Italica, located outside the poplar plantation was also inc...

Ngày tải lên: 07/08/2014, 16:20

... Figure Log shape and internal knots reconstruction (a) stem cross cutting into logs; (b) scanning of flitches; (c) marking knots on the flitch sawing surface; (d) log and knots reconstruction in ... within the 20 Maritime pine stems MATERIALS AND METHODS 2.1 Tree sampling Twenty Maritime pine (Pinus pinaster Ait.) trees were randomly sampled fro...

Ngày tải lên: 08/08/2014, 01:21

... start of spring growth in these trees, and radial growth accelerated around mid August From these measurements hourly and daily increments of stem radius were determined 2.4 Wood data In September ... followed by air-drying This minimized shrinkage, distortion, or possible collapse of wood fibres and vessels Radial profiles of conditioned wood density were de...

Ngày tải lên: 08/08/2014, 14:20

... variability in azimuth of the gap fraction A sharper analysis (K and K leads to a ) 22 45 smaller but non-negligible increase in K 3.4 Leaf area index estimation TableI presents estimates of leaf ... the gap fraction at various zenith angles, measured in the two plots with the PCA (n 10) and hemispherical photographs (n 4) Data from the PCA show a regular...

Ngày tải lên: 08/08/2014, 14:21

... improvement of various passive cooling and heating strategies and their combinations The weather in Hanoi is found to be naturally comfortable during only 23.6% of total time of a year whereas in Danang ... Danang and Hochiminh city this value was around 32%, revealing that the climate of Hanoi seems more severe than the others Figure 4: Potential of comfort improv...

Ngày tải lên: 17/06/2015, 09:05

... determination and interpretation of thermal comfort using calculation of the PMV and PPD indices and local thermal comfort criteria Geneva, 2005 [7] The US Department of Defense: Cooling buildings ... determined 326 Proceedings CISBAT 2011, Lausanne, Switzerland RESULTS 5.1 All year assessment Fig shows the potential for comfort improvement of various passive cooling...

Ngày tải lên: 19/06/2015, 10:00

... insights on designing object allocation and replication strategies for DDBSs In conclusion, our research contribution lies in designing adaptive object allocation and replication algorithms and ... Environments In this chapter, we address the object allocation and replication issues of OMP in DDBSs in the application domain of SCEs Designing an inte...

Ngày tải lên: 16/09/2015, 17:11

... Sterud et al.: A comparison of general and ambulance specific stressors: predictors of job satisfaction and health problems in a nationwide one-year follow-up study of Norwegian ambulance personnel ... among ambulance personnel are mainly related to ambulance specific stressors • Health complaints and low job satisfaction among am...

Ngày tải lên: 20/06/2014, 00:20

... traces in the mycorrhiza, which exhibited a high level of NAD-GDH activity as did the non-mycorrhizal roots (Fig B) As for aspartate aminotransferase, the distinct isoforms found in mycorrhizas, ... Spruce-Hebeloma sp associa- tion, gel electrophoresis confirmed the presence of NAD-GDH in the host cells (one band) and the presence of a high level of NADP-GDH...

Ngày tải lên: 09/08/2014, 04:20

... article as: Grapow et al.: Eyes wide shut - unusual two stage repair of pectus excavatum and annuloaortic ectasia in a 37 year old marfan patient: case report Journal of Cardiothoracic Surgery 2011 ... decade reports about successful simultaneously performed single -stage repairs became evident [ 4-6 ] We now report about an unusual two- st...

Ngày tải lên: 10/08/2014, 09:21