Physical Sciences and Mathematics Commons^™

Interview With Jim Quinn, Metro's Hazardous Waste Program, 2009 (Audio), Jim Quinn

All Sustainability History Project Oral Histories

Interview of Jim Quinn by Sean Quigley at Metro in Portland, Oregon on December 2nd, 2009.

The interview index is available for download.

The Distribution And Reproductive Success Of The Western Snowy Plover Along The Oregon Coast - 2009, David J. Lauten, Kathleen J. Castelein, J. Daniel Farrar, Hendrik G. Herlyn, Eleanor P. Gaines

Institute for Natural Resources Publications

From 3 April – 23 September 2009 we monitored the distribution, abundance and productivity of the federally Threatened Western Snowy Plover (Charadrius alexandrinus nivosus) along the Oregon coast. From north to south, we surveyed and monitored plover activity at Sutton Beach, Siltcoos River estuary, the Dunes Overlook, North Tahkenitch Creek, Tenmile Creek, Coos Bay North Spit, Bandon Beach, New River, and Floras Lake. Our objectives for the Oregon coastal population in 2009 were to: 1) estimate the size of the adult Snowy Plover population, 2) locate plover nests, 3) continue selective use of mini-exclosures (MEs) to protect nests …

Interview With Robert Dozono, Blackfish Gallery, 2009 (Audio), Robert Dozono

All Sustainability History Project Oral Histories

Interview of Robert Dozono by Greg Plath at Blackfish Gallery in Portland, Oregon on November 21st, 2009.

The interview index is available for download.

Interview With Bruce Walker, Bps, 2009 (Audio), Bruce Walker

All Sustainability History Project Oral Histories

Interview of Bruce Walker by Zachary Hathaway in NW Portland on November 20th, 2009.

The interview index is available for download.

Interview With Lee Michael Barrett, Eco-Logistics, 2009 (Audio), Lee Michael Barrett

All Sustainability History Project Oral Histories

Interview of Lee Michael Barrett by Angie Cirello in Portland, Oregon on November 20th, 2009.

The interview index is available for download.

Interview With Kimberly Holmes, 4r Sustainability, 2009 (Audio), Kimberly Holmes

All Sustainability History Project Oral Histories

Interview of Kimberly Holmes by Patrick Fausel in Portland, Oregon on November 20th, 2009.

The interview index is available for download.

Interview With David Mcmahon, Cloudburst Recycling, 2009 (Audio), David Mcmahon

All Sustainability History Project Oral Histories

Interview of David McMahan by Allison Dowd at Portland State University on November 19th, 2009.

The interview index is available for download.

Interview With Peter Spendelow, Oregon Deq, 2009 (Audio), Peter Spendelow

All Sustainability History Project Oral Histories

Interview of Peter Spendelow by Angie Yzaguirre in downtown Portland, Oregon on November 17th, 2009.

The interview index is available for download.

Biological Control Of Purple Loosestrife (Lythrum Salicaria): Factors Affecting Galerucella Pusilla And Galerucella Calmariensis Establishment In Tidal Areas, Lynda Kathryn Moore

Dissertations and Theses

Galerucella pusilla and G. calmariensis have provided successful biological control of purple loosestrife (Lythrum salicaria L.) in non-tidal areas but only marginal control in areas of tidal influence. While a previous study identified mechanical scour by tidal waters as the main cause of establishment failure, purple loosestrife stem density explained more than 80% of the variability in presence and absence of Galerucella at my study sites in the Columbia River Estuary. A logistic regression model using purple loosestrife stem density, elevation, and their interaction as predictors accurately predicted 92.5% of Galerucella presence or absence observations of a test data …

Similarity Of Nutrient Uptake And Root Dimensions Of Engelmann Spruce And Subalpine Fir At Two Contrasting Sites In Colorado, Melissa S. Lucash, Ruth D. Yanai, Karis J. Mcfarlane, Sarah E. Kulpa, Dustin M. Wood

Environmental Science and Management Faculty Publications and Presentations

Nutrient uptake capacity is an important parameter in modeling nutrient uptake by plants. Researchers commonly assume that uptake capacity measured for a species can be used across sites. We tested this assumption by measuring the nutrient uptake capacity of intact roots of Engelmann spruce (Picea engelmanni Parry) and subalpine fir (Abies lasiocarpa (Hook.) Nutt.) at Loch Vale Watershed and Fraser Experimental Forest in the Rocky Mountains of central Colorado. Roots still attached to the tree were exposed to one of three concentrations of nutrient solutions for time periods ranging from 1 to 96h, and solutions were analyzed for ammonium, …

Effects Of Tide Gate Replacement On Water Temperature In A Freshwater Slough In The Columbia River Estuary, Sara Ennis

Environmental Science and Management Professional Master's Project Reports

Dramatic declines in salmon populations in the Pacific Northwest have brought new attention to the importance of estuarine rearing habitats. Levees and tide gates used to convert estuarine wetlands into farmland have reduced available habitat by more than half of historical levels. Recent efforts to restore estuarine habitats include tide gate replacement, though this method has been poorly studied. As a key indicator of salmon habitat suitability, temperature was used to evaluate the effects of tide gate replacement in a tidally influenced freshwater slough in the Lower Columbia River estuary. Three tide gates in the largest slough on Tenasillahe Island …

How Does A Visual Monitoring System Foster Sustainable Behavior?, Melissa Haeffner, Federico Casalegno

Environmental Science and Management Faculty Publications and Presentations

Americans spend upwards of 90% of each day in buildings that account for two-thirds of electricity usage. Because the supply of smart buildings will take time to catch up with demand, efforts are sought to develop informed and educated people to live and work in these “dumb” buildings. Additionally, energy efficiency alone may be inadequate to achieve major reduction in carbon emissions (Darby, 2006). Finding ways to intentionally change the lifestyle behavior in a household should have significant implications in reducing environmental impacts as fossil energy use in resident homes is directly related to the exploitation of natural resources and …

Interview With Rabbi Arthur Zuckerman, Shaarie Torah, 2009 (Audio), Arthur Zuckerman

All Sustainability History Project Oral Histories

Interview of Rabbi Arthur Zuckerman by Austin Rosenfeld in NW Portland, Oregon on August 7th, 2009.

The interview index is available for download.

Interview With Angela Martin, Village Gardens, 2009 (Audio), Angela Martin

All Sustainability History Project Oral Histories

Interview of Angela Martin by Steve Jarosz at Village Gardens, Portland, Oregon on August 6th, 2009.

The interview index is available for download.

Climate Justice: Towards A Proactive Response To Social Inequities, Vivek Shandas

Institute for Sustainable Solutions Publications and Presentations

Discussions about climate change have taken center stage. Claims of 'carbon neutral', and strategies for calculating and mitigating green house gas emissions (GHGs) have become common place from Beaverton to Bali. The discourse on climate change, however, remains largely an environmental one, with increasingly precise definitions of parts per million, downscaling climate models, and regional assessments for reducing carbon dioxide (CO2) emissions. These discussions are essential for understanding connections between local sources of GHGs and global consequences of our actions. But health and equity are equally critical dimensions of climate change, although these dimensions have had only limited investigation. Regional …

Interview With Sarah Patterson, Lettuce Grow Garden Foundation, 2009 (Audio), Sarah Patterson

All Sustainability History Project Oral Histories

Interview of Sarah Patterson by Diane Mahon in Portland, Oregon on July 29th, 2009.

The interview index is available for download.

Interview With Rodney Bender, Growing Gardens, 2009 (Audio), Rodney Bender

All Sustainability History Project Oral Histories

Interview of Rodney Bender by Sarah Roecker at Growing Gardens Portland, Oregon on July 29th, 2009.

The interview index is available for download.

Interview With Caitlin Blethen, Growing Gardens, 2009 (Audio), Caitlin Blethen

All Sustainability History Project Oral Histories

Interview of Caitlin Blethen by Kristin Milner at Growing Gardens Organization Portland, Oregon on July 29th, 2009.

The interview index is available for download.

Interview With Steve Cohen, Planning & Sustainable Development, 2009 (Audio), Steve Cohen

All Sustainability History Project Oral Histories

Interview of Steve Cohen by Chris Stephens at Ecotrust Building, Portland, Oregon on July 28th, 2009.

The interview index is available for download.

Interview With Marissa Madrigal, Jeff Cogen Chief Of Staff, 2009 (Audio), Marissa Madrigal

All Sustainability History Project Oral Histories

Interview of Marissa Madrigal by Andrea Schons in Portland, Oregon on July 23rd, 2009.

The interview index is available for download.

Increasing The Reliability Of Ecological Models Using Modern Software Engineering Techniques, Robert M. Scheller, Brian R. Sturtevant, Eric J. Gustafson, Brendan C. Ward, David J. Mladenoff

Environmental Science and Management Faculty Publications and Presentations

Modern software development techniques are largely unknown to ecologists. Typically, ecological models and other software tools are developed for limited research purposes, and additional capabilities are added later, usually in an ad hoc manner. Modern software engineering techniques can substantially increase scientific rigor and confidence in ecological models and tools. These techniques have the potential to transform how ecological software is conceived and developed, improve precision, reduce errors, and increase scientific credibility. We describe our re-engineering of the forest landscape model LANDIS (LANdscape DIsturbance and Succession) to illustrate the advantages of using common software engineering practices.

Invasive Species Management Plan For Oswego Lake, Daniel Warren, Mark Sytsma

Environmental Science and Management Professional Master's Project Reports

This Invasive Species Management Plan defines an overarching strategy for the Lake Oswego Corporation (LOC) to mitigate threats from invasive species to Oswego Lake. Invasive species pose a direct risk to recreational and aesthetic uses of the lake, critical LOC infrastructure, and ecological communities within the lake. The Plan is particularly concerned with two bivalve mollusks in the genus Dreissena: the zebra mussel (Dreissena polymorpha) and the quagga mussel (Dreissena bugensis). These mussels grow in dense colonies that damage watercraft and underwater structures as well as displace native species. A recent scientific report found that …

Comparison Of The Focal Properties Of Selected Magnetic And Electrostatic Lenses And Tests Of Their Theoretical Models, Luis Thomas Almarez

Dissertations and Theses

The main goal of the present research is to determine whether there is a significant difference between the aberrations of magnetic and electrostatic electron lenses when they are used in the same way. Comparison of the lenses was done in an electron-optical bench, set up to resemble a scanning electron microscope (SEM). Five different lenses, two magnetic and three electrostatic, were compared. Each group included two lenses with different lens-field lengths (pole-face spacing in magnetic lenses and interior length in electrostatic lenses). The lenses were used in turn to focus the electron beam into a demagnified image, or probe. The …

Development Of An Ambient Pressure Laser-Induced Fluorescence Instrument For Nitrogen Dioxide, Jeremy Parra, Linda Acha George

Environmental Science and Management Faculty Publications and Presentations

Concerns about the health effects of nitrogen dioxide (NO₂) and its role in forming deleterious atmospheric species have made it desirable to have low-cost, sensitive ambient measurements of NO₂. We have developed a continuous-wave laser-diode laser-induced fluorescence (LIF) system for NO₂ that operates at ambient pressure, thereby eliminating the need for an expensive pumping system. The current prototype system has achieved sensitivity several orders of magnitude beyond previous efforts at ambient pressure (limit of detection of 2 ppb, 60 s averaging time). Ambient measurements of NO₂ were made in Portland, Oregon using both the standard NO₂ chemiluminescence method and the …

Interview With Ted Labbe, Depave, 2009 (Audio), Ted Labbe

All Sustainability History Project Oral Histories

Interview of Ted Labbe by Chris Fogg in Portland, Oregon on May 31st, 2009.

The interview index is available for download.

Interview With Tom Patzkowski, Rebuilding Center, 2009 (Audio), Tom Patzkowski

All Sustainability History Project Oral Histories

Interview of Tom Patzkowski by Greg Peterson at the Rebuilding Center in Portland, Oregon on May 27th, 2009.

The interview index is available for download.

Interview With Ivy Dunlap, Bureau Of Environmental Services, 2009 (Audio), Ivy Dunlap

All Sustainability History Project Oral Histories

Interview of Ivy Dunlap by Kris Thomason at Portland State University on May 23rd, 2009.

The interview index is available for download.

Interview With Kirk Davis, Glumac International, 2009 (Audio), Kirk Davis

All Sustainability History Project Oral Histories

Interview of Kirk Davis by Jay Fielding at Glumac International, Portland, Oregon on May 22nd, 2009.

The interview index is available for download.

Interview With Hilary Pfeifer, Art On Alberta, 2009 (Audio), Hilary Pfeifer

All Sustainability History Project Oral Histories

Interview of Hilary Pfeifer by Franziska Davis at Portland State University on May 14th, 2009.

The interview index is available for download.

Active Site Chemistry Of The Nadph-Dependent:7-Cyano-7-Deazaguanine (Preq0) Nitrile Oxidoreductase, An Enzyme Involved In Queuosine Biosynthesis, Bobby Wai Keung Lee

Dissertations and Theses

Queuosine (Q) is a modified nucleoside found at the wobble position of bacterial and eukaryotic transfer RNAs (tRNAs) that are specific for the amino acids tyrosine, histidine, aspartate and asparagine. A recently discovered enzyme in the biosynthetic pathway of Q, the NADPH-dependent 7-cyano-7-deazaguanine oxidoreductase (QueF), carries out the two-fold, four-electron reduction of Q precursor preQ0 to preQ1 and represents the first example of the enzymatic conversion of the nitrile functional group to an amine. Presented herein are kinetic, spectroscopic, mutational, biophysical, and isotope labeling studies directed at the elucidation of the chemical and kinetic mechanisms of this new class of …