Bacteria belonging to the genus Bradyrhizobium are capable of establishing symbiotic relationships with a broad range of plants belonging to the three subfamilies of the Leguminosae (=Fabaceae) family, with the formation of specialized structures on the roots, the nodules, where…

The environmental risks associated with genetically-engineered (GE) organisms have been controversial, and so have the models for the assessment of these risks. We propose an ecologically-based environmental risk assessment (ERA) model that follows the 1998 USEPA guidelines, focusing on potential…

ABSTRACT: Seed processing machines remove viable seeds from non-viable seeds and inert materials based on physical characteristics. The objective of this study was to assess the effect of each processing machine alone on the physical and physiological qualities of the…

The mechanics of soil erosion around buried structures is a challenging soil-structure interaction problem. It involves progressive particle movement and interaction with an existing subsurface structure. Using standard finite element method (FEM) and continuum mechanics to simulate the soil erosion…

Objective: Despite the established effectiveness of medication in improving symptoms of attention-deficit hyperactivity disorder (ADHD) (Spencer et al 2000), rates of adherence to pharmacotherapy are low, ranging from 34% to 91% (Gau et al., 2006). Since higher adherence rates are…

This dissertation explores the socio-cultural implications of content and context in Vygotsky's theory of the private speech of young children (Vygotsky, 1986). While private speech has long been thought to hold a snapshot of the child in cognitive transition, the…

"There is growing international interest in space exploration. Going back to the moon where we will build a sustainable long-term human presence with new spacecraft, robotics and life-sustaining technologies, will prepare humans for future exploration of other planets in our…

Modeling soil-structure interaction problems involving granular material and large deformation is a challenging task particularly for geotechnical engineering. Using standard finite element methods has been found to be inefficient to model soil-structure interaction at the soil particle scale. Soil-structure interactions…

The purpose of this multiple case study was to describe and understand Chinese graduate students’ emotional experiences, and to explore the possible relationships between their emotional experiences and their epistemic change in their first semester in a Canadian research-intensive university.…

A reduction in the consumptive and nonconsumptive effects of predation resulting from harvesting of top predators has been hypothesized to result in failure of harvested species to recover from low abundance, even if harvesting is reduced or ceases. I examined…