The sagebrush steppe ecosystem of the northern Great Basin is severely degraded and continues to decline due in large part to the invasive, non-native annual grasses Bromus tectorum L. (cheatgrass) and Taeniatherum caput-medusae (L.) Nevski (medusahead). Restoration of invasive-dominated areas is difficult, but can be enhanced by adding a carbon...
7th Biennial Conference on University Education in Natural Resources. In 2005 faculty in the Northern Arizona University School of Forestry initiated a project to replace the required sophomore-level writing course taught by the English Department with a new course, “Writing in Forestry,” taught within the School. The goal of the...
The emerging field of nanotechnology strictly requires the micro-scaling of the available separation technology and the design of novel devices for separations of molecules of interest. The separation of proteins and nanoparticles is challenging due to their relatively large size, non-specific adherence to surfaces and instability in many solvents.
This...
The objectives of this thesis were to evaluate the responses of soil microbial communities to physical and chemical disturbances, and associate these responses with soil functional stability and changes in soil quality. The first study consisted of application of heat shocks (HS) to soils with contrasting land use history to...
List of abstracts for posters and papers presented at the 7th Biennial Conference on University Education in Natural Resources, held March 13-15 2008 at Oregon State University. Contact the author(s) for more information on papers is listed here for which no entry appears in the conference collection at: http://ir.library.oregonstate.edu/dspace/handle/1957/7138
Nitrosomonas europaea (ATCC19718) participates in the biological removal of nitrogen from wastewater by oxidizing ammonia to nitrite, the first step in nitrification. This bacterium is sensitive to heavy metals (Zn²⁺, Cd²⁺, Cu²⁺, and Hg²⁺) and cyanide, compounds commonly encountered in wastewater treatment plants. Therefore, we characterized physiological and transcriptional responses...
Simulations of stream-subsurface water exchange (hyporheic exchange) using a three-dimensional steady state groundwater flow model and a particle tracking model in unconstrained and constrained reaches of small (2nd-order) and intermediate (5th-order) mountain streams were conducted to estimate the effects of geomorphic features on the extent, volume and residence time of...
Collegiate student's conceptual distinctions of what define a mathematical and a physical model seems to be affected by the epistemological beliefs they hold about this knowledge. These beliefs seem to influence student's thinking and reasoning as they embark on problem solving activities in collegiate mathematics. Student's epistemological beliefs of mathematical...
The movement to reform mathematics teaching and learning in schools began in the 1980s. After dedicating vast resources to support reform efforts since then, the transition to improve mathematics teaching and learning in schools has not occurred. In the majority of mathematics classrooms teachers still rely on traditional teaching strategies...