Effect of structure on current and potential distributions in porous electrode

Porous electrodes generally contain constricted macropores and localized micropores. The effects of the macropore constrictions on the resistance of a capillary were studied and an analytical model was developed for predicting the current distribution in a constricted macropore which directly includes constriction effects and does not require an empirical tortuosity parameter. The current and concentration distributions in localized micropores were also investigated and it was shown that the microporous area is fully accessible to charge and mass transfer processes. From these analyses it was concluded that the micropores primarily affect the kinetics of the interfacial processes by contributing to the interfacial area, while the macropores impose ohmic and mass transport limitations through the volume of the porous electrode

Parents just don\u27t understand

This project explores what resources and support systems are necessary to assist parents of first and second-generation Mexican-American students in helping their children succeed academically. Research demonstrates that it is important for parents to form better partnerships with school administration, learn about various available academic resources, and employ various means of assisting their children during the learning process. The researcher collected data at an elementary school through interviews; this data revealed that parents of first and second generation Mexican-American students needed to become greater advocates for their children’s education, schools needed more fluent bilingual teachers, parents and students needed to create stronger partnerships, and that parents needed to be more actively involved at their children’s schools. The researcher created an informational brochure for parents that focused on improving the education of Spanish-speaking students and working with the parents of such students