Index Catalog // ScholarsArchive@OSU

Heteroaggregation between citrate-stabilized gold nanoparticles and hematite colloids : mechanisms and quantification of nanoparticle-colloid interactions

Creator:: Smith, Brian M.
Abstract:: Understanding the aggregation behavior of engineered nanomaterials (ENMs) in aqueous environments is essential to understanding their fate, transport, and toxicity. Because naturally occurring colloids will likely be present at much higher concentrations than ENMs in environmental systems, heteroaggregation and attachment with these natural colloids could significantly influence ENM fate and...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: _____________________________________________________________________ Jeffrey A

Proposal of an Automated Workflow for Appropriate Tile Drainage Simulation in Denitrifying Bioreactor Planning and Design

Creator:: Grohman, Travis A.
Abstract:: Denitrifying bioreactors are an edge-of-field treatment technology particularly well suited for nitrate removal from subsurface (tile) drainage effluent of agricultural lands. The effectiveness of a proposed denitrifying bioreactor is site-specific and depends upon the complicated interplay of field and environmental parameters controlling discharge events, nitrate concentrations, subsurface temperatures, dissolved oxygen...
Resource Type:: Masters Thesis
Full Text:: Page 2.1 Manual Installation of a Clay Tile Drainage System in the Early 20th Century [Powers and

N processing in grass seed crops differing in soil drainage and disturbance in western Oregon, U.S.A.

Creator:: Nelson, Machelle A.
Abstract:: A better understanding of grass seed crop and soil fertility is necessary to improve fertilizer practices and preserving water quality in Willamette Valley, Oregon, where 55% of land-use is in grass seed production that directly impacts adjacent waterways containing native protected fish species. I determined tillage effects on soil N...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Machelle A. Nelson for the degree

A water balance model for reforestation sites : description and sensitivity

Creator:: Costello, Craig
Abstract:: A model was developed for analysis of the soil water balance of individual reforestation sites in western Oregon. The numerical procedure for this model was programmed in compiled BASIC language and calculations for an entire season are made in about 180 seconds on an IBM AT microcomputer. The processes that...
Resource Type:: Masters Thesis
Full Text:: A water balance model for reforestation sites

Activated carbon incorporated into herbicide protection pods as a seed amendment technology for revegetation

Creator:: Clenet, Danielle R.
Abstract:: Reestablishing native perennial vegetation in annual grass-invaded rangelands is critical to restoring ecosystems, especially following wildfires. Controlling invasive annual grasses is essential to increasing revegetation success; however, pre-emergent herbicides used to control annual grasses prohibit immediate seeding due to non-target herbicide damage. Thus, seeding is often delayed one year following...
Resource Type:: Masters Thesis
Full Text:: . Title: Activated carbon incorporated into herbicide protection pods as a seed amendment technology

Patterns of carbon storage within a mature northern highbush blueberry production system

Creator:: Nemeth, Denise Alexandra
Abstract:: The objectives of this study were to: 1) determine how organic matter (incorporated vs. surface mulch) and nitrogen fertilization rate impact northern highbush blueberry (Vaccinium corymbosum L.) plant biomass, carbon accumulation, plant losses and allocation, and mycorrhizal infection in mature plants, and 2) determine the magnitude of carbon fluxes (carbon...
Resource Type:: Dissertation
Full Text:: on June 10 2013. Title: Patterns of Carbon Storage Within a Mature Northern Highbush Blueberry

The influence of herbivore generated inputs on nutrient cycling and soil processes in a lower montane tropical rain forest of Puerto Rico

Creator:: Fonte, Steven J.
Abstract:: The role of insect herbivores in the nutrient cycling dynamics of forest ecosystems remains poorly understood. Although past research in herbivory has focused primarily on the deleterious effects that insects can have on tree growth and mortality, the overall effects of herbivory are more complex. Herbivores have the potential to...
Resource Type:: Masters Thesis
Full Text:: Herbivore Generated Inputs on Nutrient Cycling and Soil Processes in a Lower Montane Tropical Rain Forest

Influence of Soil Texture on Carbon Storage of PNW Coastal Blue Carbon Ecosystems

Creator:: Fox, Conner S.
Abstract:: Coastal blue carbon ecosystems offer a variety of important ecosystem services, including exceptional rates of carbon sequestration and long-term carbon storage. Because these ecosystems disproportionately influence global carbon cycling, understanding their soil characteristics may help guide long-term climate change mitigation and adaptation strategies. Recently, Kauffman et al. (2020) observed the...
Resource Type:: Honors College Thesis
Full Text:: Storage of PNW Coastal Blue Carbon Ecosystems by Sage Fox A THESIS Submitted to Oregon

Characterization of geohumus for use in turf

Creator:: Patton, Ty J.
Abstract:: Geohumus is a new, unique hybrid soil amendment made of polyacrylic acid, igneous rock flour, and quartz sand. It is biodegradable and is marketed to increase soil porosity, increase plant yield, and increase plant available water by up to 30%, all while using a low inclusion rate of only 1...
Resource Type:: Masters Thesis
Full Text:: (2009) cited that Turface, the brand name of a type of calcined clay, was used by many superintendents

Use of MIKE SHE for estimation of evapotranspiration in the Sprague River Basin

Creator:: Shakya, Suva R.
Abstract:: MIKE SHE is a fully distributed, physically-based hydrologic model that can simulate water movement over and under the Earth's surface. Evapotranspiration (ET) is one of the components of this model. MIKE SHE uses a modification of the Kristensen -Jensen (1975) method to calculate actual ET. This method is based on...
Resource Type:: Masters Thesis
Full Text:: River Basin Abstract approved: Richard H. Cuenca MIKE SHE is a fully distributed

ScholarsArchive@OSU

Heteroaggregation between citrate-stabilized gold nanoparticles and hematite colloids : mechanisms and quantification of nanoparticle-colloid interactions

Proposal of an Automated Workflow for Appropriate Tile Drainage Simulation in Denitrifying Bioreactor Planning and Design

N processing in grass seed crops differing in soil drainage and disturbance in western Oregon, U.S.A.

A water balance model for reforestation sites : description and sensitivity

Activated carbon incorporated into herbicide protection pods as a seed amendment technology for revegetation

Patterns of carbon storage within a mature northern highbush blueberry production system

The influence of herbivore generated inputs on nutrient cycling and soil processes in a lower montane tropical rain forest of Puerto Rico

Influence of Soil Texture on Carbon Storage of PNW Coastal Blue Carbon Ecosystems

Characterization of geohumus for use in turf

Use of MIKE SHE for estimation of evapotranspiration in the Sprague River Basin

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