A high temperature high vacuum rheometer has been designed, fabricated,
and tested for the study of the steady shear viscosity for multicomponent bulk
metallic glass forming alloys. This rheometer has an operating range up to
1525 K, rotational frequencies of 9.4*10⁻³-3.7*10¹ radians/s, and a
calibrated viscosity range of 9.6*10⁻³ and...
The purpose of this thesis is the development of a comprehensive sexual and reproductive health (SRH) education program for the junior secondary school in Maunatlala, Botswana. Community based participatory research methods were followed throughout this project to develop a relevant and culturally sensitive program. Data was collected through interviews with...
The purpose of this project was to examine how trauma can be manifested during birth, as well as the tools non-clinical labor support professionals called doulas can provide. I aimed to analyze the first-hand experiences of two mothers with a history of trauma, taking note of the perceived benefits of...
Models of a species’ distribution and models of a species’ spatially explicit density are valuable tools for conservation. They allow researchers to estimate changes in distributions, densities, and populations, based on changing environmental conditions. To trust such estimates, however, the quality of models is exceedingly important. Model performance can be...
Species identification is essential to biology, conservation, and management. The ability to focus on specific diagnostic characteristics of a species helps improve the speed and accuracy of identification. Birds are excellent subjects for teaching species identification because, in combination with their different shapes and sizes, their plumages have distinctive colors...
Severity rating systems are fundamental to understanding the impacts of disturbance agents in forest stands. The balsam woolly adelgid (BWA), Adelges piceae (Ratzeburg) (Hemiptera: Adelgidae), is an invasive forest pest in North America that infests and causes mortality in true fir, Abies spp. There is currently no single system for...
The influence of fertilization on disease severity is unknown in most forest pathosystems. Fertilization treatments were randomly applied to 0.01 ha plots centered on individual dominant or co-dominant Douglas-fir trees in ten Douglas-fir stands from coastal Oregon to the foothills of the Oregon Cascade Range, USA. This region is affected...
Tree-ring analysis was applied to assess the impacts of the fungal disease Swiss needle
cast on the radial growth of mature Douglas-fir (Pseudotsuga menziesii) forests in the
western Oregon Coast Range. Although considered endemic to the Pacific Northwest,
Swiss needle cast has significantly lowered productivity in Douglas-fir forests only in...
Swiss needle cast (SNC), an important fungal disease of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco), has increased in severity throughout its natural and introduced range over the last half century. The role of climate change and forest management practices in the increase is unclear. We analyzed tree-ring chronologies from six late-successional...