Publications by authors named "R Massad"

Article Synopsis
  • Crop residues contribute carbon and nitrogen to soils, significantly influencing nitrous oxide (N₂O) emissions, but current methods solely focus on N inputs without accounting for residue characteristics.
  • Different types of crop residues, especially immature ones, have varying effects on N₂O emissions due to their biochemical qualities, highlighting the need to differentiate between mature and immature residues in emission assessments.
  • To improve N₂O emission accounting, further research is required to establish emission factors for different residue types, understand emissions from belowground residues, enhance data on residue management, and evaluate the long-term impacts of residue addition on soil N₂O emissions.
View Article and Find Full Text PDF

The mechanisms of how dyes and catalysts for solar-driven transformations such as water oxidation to form O work have been intensively investigated, however little is known about how their independent photophysical and chemical processes work together. The level of coordination between the dye and the catalyst in time determines the overall water oxidation system's efficiency. In this computational stochastic kinetics study, we have examined coordination and timing for a Ru-based dye-catalyst diad, [P2Ru(4-mebpy-4'-bimpy)Ru(tpy)(OH)], where P2 is 4,4'-bisphosphonato-2,2'-bipyridine, 4-mebpy-4'-bimpy is 4-(methylbipyridin-4'-yl)--benzimid-'-pyridine, a bridging ligand, and tpy is (2,2':6',2''-terpyridine), taking advantage of the extensive data available for both dye and catalyst, and direct studies of the diads bound to a semiconductor surface.

View Article and Find Full Text PDF

This study aimed to determine the effect of interprofessional education (IPE) activities on professional level occupational and physical therapy student perception of their competency and their actual observed competency in interprofessional collaboration. The effect of three IPE activities embedded within occupational therapy and physical therapy curricula were measured. Significant changes were noted in the students' perception of their interprofessional collaboration using the Interprofessional Collaborative Competencies Attainment Survey (ICCAS) Revised tool, following each of the three activities.

View Article and Find Full Text PDF

For mitigation of climate change, all sources and sinks of greenhouse gases from the environment must be quantified and their driving factors identified. Nitrous oxide (NO) is a strong greenhouse gas, and the contribution of aquatic systems to the global NO budget remains poorly constrained. In this study, we measured NO concentrations in a eutrophic coastal system, Roskilde Fjord (Denmark), and combined measurements with statistical modeling to quantify the NO fluxes and budget in the system over a period of six months.

View Article and Find Full Text PDF

Accurate assessment is crucial for determining appropriate therapeutic interventions for social anxiety and conducting sound clinical research. While self-report measures of social anxiety are widely used in both research and clinical settings, they have several drawbacks inherent to their textual nature. Here, we describe the development and initial validation of the Visual Social Anxiety Scale (VSAS), a novel picture-based self-report measure of social anxiety, based on the well-established widely-used Liebowitz Social Anxiety Scale (LSAS).

View Article and Find Full Text PDF