Hydrodeoxygenation of Guaiacol over Ceria-Zirconia Catalysts.

The hydrodeoxygenation of guaiacol is investigated over bulk ceria and ceria-zirconia catalysts with different elemental compositions. The reactions are performed in a flow reactor at 1 atm and 275-400 °C. The primary products are phenol and catechol, whereas cresol and benzene are formed as secondary products. No products with hydrogenated rings are formed. The highest conversion of guaiacol is achieved over a catalyst containing 60 mol % CeO2 and 40 mol % ZrO2 . Pseudo-first-order activation energies of 97-114 kJ mol(-1) are observed over the mixed metal oxide catalysts. None of the catalysts show significant deactivation during 72 h on stream. The important physicochemical properties of the catalysts are characterized by X-ray diffraction (XRD), temperature-programmed reduction, titration of oxygen vacancies, and temperature-programmed desorption of ammonia. On the basis of these experimental results, the reasons for the observed reactivity trends are identified.

Translating and testing breast cancer risk reduction messages for mothers of adolescent girls.

Emerging scientific findings regarding breast cancer science are typically presented only in discipline specific journals in which the general public and those at risk have limited access, creating a development-to-delivery gap between the state of the science and public knowledge. A lack of collaboration between scientists, communication experts, and community partners further compounds this lack of information available to the public. The present study translates recent scientific findings about environmental breast cancer risks into palatable magazine-style messages for mothers of young daughters as a strategy to meet the call for greater translation and dissemination of scientific results to the lay public. Results from focus groups indicate that mothers actually want more science in messages and greater explication of findings that indicate causality. Mothers also expect polished, professional messages that are representative of their daughters and provide a source for further information seeking purposes. Recommendations for future translation and message design endeavors are discussed.