Index Catalog // ScholarsArchive@OSU

An ammonia stripping and recovery system for animal wastewaters

Creator:: Crown, Julia K.
Abstract:: Traditionally, livestock operations were small and combined with cropping operations. This allowed farms to be self-sustaining because nutrients were constantly recycled on the farm. Since the Haber-Bosch chemical process was patented, crop farmers turn to industrial fertilizers when soils nutrients are depleted. Animal and plant operations diverged, functionally separated, and...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Julia K. Crown for the degree

The potential use of GIS as a tool for communicating risk information to American Indian tribes: A consideration of the ethical implications

Creator:: Lizon, K. Michele
Abstract:: American Indians presently face health risks posed by exposure to environmental pollutants through different exposure routes including: inhalation (e.g., air particles), ingestion (e.g., fish, water), and dermal contact (e.g., contact with water, soil). Geographic Information Systems (GIS) are increasingly being used in the Environmental Health arena as a tool for...
Resource Type:: Capstone Project
Full Text:: K. Michele Lizon for the degree of Master of Science in Geography presented on June 13, 2012

The effects of stand thinning on soil erosion rates at Jim's Creek in the Willamette National Forest, Oregon

Creator:: McFadden, Andrew K.
Abstract:: Surface sediment transport is an important geomorphic process which can be significantly altered by management activities in forested ecosystems. Disturbance of the soil surface may result in increased sediment delivery to fish bearing streams and degradation of soil structure. Selective thinning and low impact yarding techniques were utilized in an...
Resource Type:: Capstone Project
Full Text:: EROSION RATES AT JIM’S CREEK IN THE WILLAMETTE NATIONAL FOREST, OREGON By Andrew K

Spatial and temporal patterns of "super-old" Douglas-fir trees of the central western Cascades, Oregon

Creator:: Giglia, Sheryl K.
Abstract:: Old-growth in the Pacific Northwest is generally defined as trees that are more than 200 years old. A great deal of analysis and discussion about old-growth forests in western Oregon, however, has focused on the relatively widespread 400 to 500 year age class of primarily Douglas-fir (Pseudotsuga menziesii) trees. The...
Resource Type:: Masters Thesis

Glacial-interglacial changes in central tropical Pacific surface seawater property gradients

Creator:: Lynch-Stieglitz, Jean, Polissar, Pratigya J., Jacobel, Allison W., Hovan, Steven A., Pockalny, Robert A., Lyle, Mitchell, Murray, Richard W., Ravelo, A. Christina, Bova, Samantha C., Dunlea, Ann G., Ford, Heather L., Hertzberg, Jennifer E., Wertman, Christina A., Maloney, Ashley E., Shackford, Julia K., Wejnert, Katherine, and Xie, Ruifang C.
Abstract:: Much uncertainty exists about the state of the oceanic and atmospheric circulation in the tropical Pacific over the last glacial cycle. Studies have been hampered by the fact that sediment cores suitable for study were concentrated in the western and eastern parts of the tropical Pacific, with little information from...
Resource Type:: Article

ARK: Aggregation of Reads by K-Means for Estimation of Bacterial Community Composition

Creator:: Koslicki, David, Chatterjee, Saikat, Shahrivar, Damon, Walker, Alan W., Francis, Suzanna C., Fraser, Louise J., Vehkaperä, Mikko, Lan, Yueheng, and Corander, Jukka
Abstract:: Motivation: Estimation of bacterial community composition from high-throughput sequenced 16S rRNA gene amplicons is a key task in microbial ecology. Since the sequence data from each sample typically consist of a large number of reads and are adversely impacted by different levels of biological and technical noise, accurate analysis of...
Resource Type:: Article
Full Text:: ARK: Aggregation of Reads by K-Means for Estimation of

Spatio-Temporal Patterns of Tree Establishment in the M1 Meadow of the H.J. Andrews Experimental Forest

Creator:: Jones, Katherine E.
Abstract:: Montane meadows in the Cascade Range of Oregon have been declining due to tree establishment since records began. Montane meadow complexes in the H.J. Andrews Experimental Forest shrank by 60 to 75% from 1949 to 2005, but fine scale temporal and spatial processes of tree establishment in these meadows are...
Resource Type:: Masters Thesis
Full Text:: : ______________________________________________________ Julia A. Jones Montane meadows in the Cascade Range of Oregon have been declining due to

Forest canopy effects on snow depth and density of seasonal and transient mountain snowpack in a maritime snow climate

Creator:: Whidden, Ian W.
Abstract:: Relatively little is known about how various factors influence snow water storage in forested mountain landscapes in maritime (warm winter) climates. This study took advantage of multiple snow data sources including long-term data, synoptic sampling, remote sensing, and modeling to examine factors influencing snow dynamics in the H.J. Andrews Experimental...
Resource Type:: Masters Thesis
Full Text:: Julia A. Jones Relatively little is known about how various factors influence snow water storage in

Electric Machine Capability Characterization for Actuators in Disaster Response Robots

Creator:: Li, Qianyun
Abstract:: Disaster response robots need to be simultaneously able to survive extreme environment and complete the mission efficiently and robustly. One of the determinants is the performance of the actuators in each joint, which drive the robot to the desired motion accurately. In robotics society, people usually build their robots directly...
Resource Type:: Masters Thesis
Full Text:: : Julia Zhang Disaster response robots need to be simultaneously able to survive extreme environ- ment

Trends in streamflow above and below dams across the Columbia River basin from 1950 to 2012 : assessing sub-basin sensitivity

Creator:: Hammond, John C.
Abstract:: Climate change, combined with population growth, is expected to exacerbate water scarcity globally. In the Columbia River basin (CRB), streamflow is managed for multiple objectives with a network of dams and reservoirs distributed throughout the basin that may mitigate climate change effects on water scarcity. This study quantified trends in...
Resource Type:: Masters Thesis
Full Text:: : Julia A. Jones Abstract Climate change, combined with population growth, is expected to

ScholarsArchive@OSU

An ammonia stripping and recovery system for animal wastewaters

The potential use of GIS as a tool for communicating risk information to American Indian tribes: A consideration of the ethical implications

The effects of stand thinning on soil erosion rates at Jim's Creek in the Willamette National Forest, Oregon

Spatial and temporal patterns of "super-old" Douglas-fir trees of the central western Cascades, Oregon

Glacial-interglacial changes in central tropical Pacific surface seawater property gradients

ARK: Aggregation of Reads by K-Means for Estimation of Bacterial Community Composition

Spatio-Temporal Patterns of Tree Establishment in the M1 Meadow of the H.J. Andrews Experimental Forest

Forest canopy effects on snow depth and density of seasonal and transient mountain snowpack in a maritime snow climate

Electric Machine Capability Characterization for Actuators in Disaster Response Robots

Trends in streamflow above and below dams across the Columbia River basin from 1950 to 2012 : assessing sub-basin sensitivity

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