A reduced order model of Molten Carbonate Fuel Cell: A proposal

The mathematical model of the Molten Carbonate Fuel Cell (MCFC) is presented. The new approach for modeling the voltage of MCFC is proposed. Electrochemical, thermal, electrical and flow parameters are collected in the 0-D mathematical model. The aim was to combine all cell working conditions in as a low number of factors as possible and to have the factors relatively easy to determine. A validation process for various experimental data was made and adequate results are shown. The presented model was validated for various fuel mixtures in relatively wide ranges of parameters. A distinction is made between the “design-point” and “off-design operation”.     

Pluralism at the edge of the millenium: Psychoanlysis traverses the continent and the ocean: A round table discussion with prominent analysts: Perspectives on therapeutic action.

The spring 1999 meeting of Division 39, prior to our entry into a new century, brought together prominent and diverse voices within psychoanalysis at a round table discussion. Rather than report on the questions posed for the panelists and their responses, the author presents a brief case vignette offered during the panel discussion. The various panelists' clinical and theoretical positions from their wide-ranging responses to the questions presented are extracted. The author applies their positions to this case and also offers some of the answers that directly related to the clinical presentation. It is believed that this format highlights the similarities and differences that did not emerge as sharply when the panelists offered their commentary to the more generalized queries. The panelists' views on idealization, an issue that further reflected their disparate stances, are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

High refractive index hyperbranched polymers with different naphthalene contents prepared through thiol-yne click reaction using di-substituted asymmetric bulky alkynes

In the present study, different aromatic moieties, naphthalene and benzene, were introduced into alkynes to constitute 1,3,5-tris(naphthylethynyl)benzene as B₃ monomer. This monomer could be reacted with different ratios of hexane-1,6-dithiol (A₂ monomer) via mono-selective Thiol-Yne reaction (TYR) to form hyperbranched polymers PI. TYR yielded in both, model reactions and polymerizations, mono-adducts with high regioselectivity and proved the absence of any bis-adducts. Polymers of very high molecular weights of up to 625,000 g/mol could be achieved without any sign of gel formation. All the polymers exhibit high transparency in the visible wavelength range and also show high refractive indices of up to 1.745 at 589.7 nm due to the high incorporation of naphthalene and phenyl groups. Besides, all polymers prove excellent solubility and processability together with excellent thermal properties.     

Biological activities of malvidin, a red wine anthocyanidin

Malvidin (mv) has been identified as a potential inhibitor of 3',5'-cyclic adenosine monophosphate (cAMP) phosphodiesterases (PDE). This study was to investigate if, as a possible consequence of intracellular PDE inhibition, the activity of the mitogen-activated protein kinase (MAPK) cascade is affected by mv treatment. At a concentration of 5 microM of mv a significant decrease of phosphorylated ERK1 and ERK2 (ERK, extracellular regulated kinase) in HT29 cells was observed. However, an increase in substance concentration led to a substantial recurrence of the phosphorylated enzymes. Cell cycle analysis underlined that indeed G(1)-relevant targets are only marginally affected by mv. The recurrence of phosphorylated ERK1/2 and the lack of effectiveness on the G(1)-passage up to 100 microM indicated that the inhibition of cAMP-specific PDEs is of minor relevance for the growth-inhibitory properties of mv in HT29 cells. In contrast, the release of cells, synchronised in the G(2)/M-phase of the cell cycle by nocodazole treatment, was effectively blocked in the presence of 1 microM mv. These results suggest that mv interferes with cellular targets relevant for G(2)/M-progression which have not been identified so far.     

On robustness of camera identification algorithms

Multimedia Tools and Applications - In this paper we consider the problem of a privacy threat enabling tracing digital cameras by the analysis of pictures they produced. As thousands of images are...     

fGAAM: A fast and resizable genetic algorithm with aggressive mutation for feature selection

Pattern Analysis and Applications - The paper introduces a modified version of a genetic algorithm with aggressive mutation (GAAM) called fGAAM (fast GAAM) that significantly decreases the time...     

Improved quality assessment of colour surfaces for additive manufacturing based on image entropy

Pattern Analysis and Applications - A reliable automatic visual quality assessment of 3D-printed surfaces is one of the key issues related to computer and machine vision in the Industry 4.0 era....     

Influence of Initial pH Values on the Lag Phase of Escherichia coli and Bacillus licheniformis Batch Cultures

Robust and reproducible processes are necessary to achieve a constant and high quality of biotechnological products. Thus, suitable online measurement systems and an increased understanding of the parameters influencing the process are required. In this study, two online measurement devices were used to detect the influence of the initial pH value on the lag phase of three E. coli and one B. licheniformis strains cultivated in buffered mineral media. It was shown that the initial pH value, the type of buffer and its concentration have to be carefully chosen to avoid differences in the lag phase, unsuitable pH values during the cultivation, and osmotically inhibiting high buffer concentrations.