The product water of polymer electrolyte fuel cells (PEFCs) has to pervade the gas diffusion layer (GDL) and can lead shortages educt pathways catalyst hence significant performance losses. Here we report on efforts made enable subsecond submicron operando X-ray tomographic microscopy (XTM) over a wide range cell operating temperatures. short XTM scan times allow quantify contributions capillar...

In this paper, a comparative study based on Finite Element Method has been established in order to investigate the effect of bipolar plate materials stress and temperature distribution proton exchange membrane fuel cell stack under functioning conditions. The analysis is conducted for three materials: Graphite BP, stamped uncoated stainless steel SS316L, Niobium coated SS316L. ICR (Interfacial ...

We present a series of instanton-like solutions to a matrix model which satisfy a self-duality condition and possess an action whose value is, to within a fixed constant factor, an integer l2. For small values of the dimension n2 of the matrix algebra the integer resembles the result of a quantization condition but as n → ∞ the ratio l/n can tend to an arbitrary real number between zero and one...

OECD sector 24030 Financial institutions of the formal financial sector BMZ project ID 1999 65 138 Project-executing agency Banco de la República Oriental del Uruguay (BROU) Consultant not applicable Year of ex-post evaluation 2006 Project appraisal (planned) Ex-post evaluation (actual) Start of implementation 01/2001 01/2001 Period of implementation no information available 33 months Investmen...

Brain tumors show genetic heterogeneity and various immunohistochemical / biomarkers are now available for brain tumor diagnosis in addition to the advanced molecular techniques. However the basic routine histopathology remains the gold standard for diagnosis corroborating with the characteristic radiology and immunohistochemistry to substantiate or confirm diagnosis and MIB1/Ki67 for grading o...

A new fabrication technique is employed to convert a metallic foil into a porous structure with an array of micron size pores. The motivation stems from the need to develop a more efficient and controllable gas diffusion medium for fuel cell applications. The influence of mask shape, mask width and etching time was investigated experimentally. A correlation to predict trench width with etching ...

The aim of this study was to assess personality factors, self-efficacy and depression in chronic renal patients awaiting kidney transplant. Patients (n = 65) were adults under hemodialysis treatment and on the kidney transplant list with average age of 49.11 years. Pearson correlation analysis showed positive associations between the factors Surgency (r=-.353, p<.01) Conscientiousness (r=.415, ...

This paper proposes two ways to instantiate general games specified in the game description language GDL to enhance exploration efficiencies of existing players. One uses Prolog’s inference mechanism to find supersets of reachable atoms and moves; the other one utilizes dependency graphs, a datastructure that can calculate the dependencies of the arguments of predicates by evaluating the variou...

* MIRACL (Multimedia InfoRmation system and Advanced Computing Laboratory) Université de Sfax. Institut Supérieur d’Informatique et de Multimédia de Sfax Route de Tunis, Km 10, cité el ons 3021 BP 242, Tunisie {Wiem.Yaiche, Mohamed.Tmar, Abdelmajid.BenHamadou}@isimsf.rnu.tn ** RIADI-GDL (Génies Documentiel et Logiciel ) Université de la Manouba. École Nationale des Sciences de l’Informatique Ca...