Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 6 of 6 for “"Kinetic constant"”.
-
Development of a semi–empirical reaction kinetic model for PEM fuel cells
… followed by the ORR.This study developed a kinetic model from conventional kinetic isotherms and it is proposed that an associative adsorption mechanism occurs at a low overpotential resulting in the dissociation of the hydroperoxyl species determining the rate of the ORR at the cathode of …
-
Modelos de remoção de matéria orgânica e nutrientes de águas residuárias da suinocultura em sistemas alagados construídos
Embora existam, na literatura científica, vários estudos nos quais foi avaliado o potencial uso de sistemas alagados construídos (SACs) no tratamento de águas residuárias, não há uma indicação segura de parâmetros de projeto para o dimensionamento de SACs, principalmente aqueles destinados ao …
-
Characterization of plant tocopherol cyclases
… respect to pH and temperature optima and their kinetic constant. To gain new insights into the mechanisms regulating the tocopherol biosynthesis, chimeric TC gene constructs were overexpressed in developing seeds of transgenic rapeseed plants. This TC overexpression resulted in a significant …
-
Cleaning viscoplastic soil layers from flat surfaces using impinging water jets
… results. It required the fitting of a kinetic constant to experimental data to describe the initial fast growth of the cleaned radius close to the impinging point. A detailed model was also developed based on the rate of viscous dissipation in a shallow wedge of material at the cleaning …
-
Investigation into the kinetics, mechanisms and particle characteristics of selenium precipitation from copper sulphate solution.
… no fundamental information on the nucleation kinetics of this important process. Furthermore, the fundamental chemistry and mechanisms involved in this process are not fully understood. In this study, the nucleation kinetics, the process chemistry and mechanisms of selenium precipitation from …
-
So<sub>2</sub> Adsorption On Carbon-Supported Pt Electrocatalyst
… and 68, respectively. The activation energy and kinetic constant of desorption are reported for weakly adsorbed SO<sub>2</sub> at 1% and 20 ppm SO<sub>2</sub> using the Polanyi-Wigner equation.</p> <p>As a second step in isolating the adsorption on Pt/C electrocatalysts, TPD was used to study …