In this paper, the effects of plasma discharge parameters on the nano particles formation process in a plasma enhanced chemical vapor deposition (PECVD) reactor using a model based on equations of ionization kinetics for different active species are studied. A radio frequency applied electric field causes ionization inside the reactor and consequently different reaction schemically active speci...

For a glucose-fed bio-hydrogen producing bioreactor, we have fitted the model parameters of a known model using experimental data obtained from a pilot laboratory-scale bioreactor. We use this fitted model to design an output-feedback controller based on the super-twisting algorithm, which uses only the on-line measurements of the hydrogen production rate and maximizes this variable by manipula...

Therefore, the RWGS reaction was also included in the analysis. As will be seen this reaction plays an extremely important role, limiting the amount of hydrogen that can be produced at high pressures. The reforming reaction was carried out at various pressures and temperatures and, for the first time, a tradeoff in hydrogen production due to the effect of pressure on thermodynamic equilibrium a...

We report on laboratory measurements of molecular hydrogen formation and recombination on an olivine slab as a function of surface temperature under conditions relevant to those encountered in the interstellar medium. On the basis of our experimental evidence, we recognize that there are two main regimes of H coverage that are of astrophysical importance; for each of them we provide an expressi...

Hydrogen sulfide is gaining acceptance as an endogenously produced modulator of tissue function. The present paradigm of H(2)S (diprotonated, gaseous form of hydrogen sulfide) as a tissue messenger consists of H(2)S being released from the desulfhydration of l-cysteine at a rate sufficient to maintain whole tissue hydrogen sulfide concentrations of 30 microM to >100 microM, and these tissue con...

HIGH FUEL CONVERSION RATE AND HYDROGEN PRODUCTION YIELD Hsueh-Sheng Wang, Yu-Chuan Su*, Yuh-Jeen Huang and Fan-Gang Tseng * Department of Engineering and System Science, Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 300, Taiwan, ROC ABSTRACT In this article, a low-temperature partial-oxidation-mode (POM) micro methanol reformer with the ...