Index Catalog // ScholarsArchive@OSU

Innovative Data Acquisition for the Fall Cone Test in Teaching and Research

Creator:: Evans, T. M. and Simpson, D. C.
Abstract:: The fall cone device may be preferable to the Casagrande cup for the determination of liquid limits because it is based on a firm theoretical background and maintains a high degree of operator independence. This makes the fall cone device a superior tool for measuring consistency limits for research and...
Resource Type:: Article
Full Text:: and creates .tif images of each frame 374 % by Daniel Simpson and T. Matthew Evans 375 % Oregon

Food Insecurity in Western US States: Increasing Collaboration between State Agencies and Nonprofit Organizations

Creator:: Edwards, Mark Evan
Abstract:: This analysis examines how and why many nonprofits and state agencies fighting domestic hunger have increasingly collaborated in unexpected ways. Interviews with nonprofit and state agency leaders in four western US states provide details about these collaborative efforts. Drawing on the concept of collaborative governance, the findings reveal important roles...
Resource Type:: Article
Full Text:: Mark Evan Edwards Oregon State University Abstract This analysis examines how and why many

Shear Wave Propagation in Granular Assemblies

Creator:: Ning, Z., Khoubani, A., and Evans, T. M.
Abstract:: Shear wave velocity is a fundamental property of a granular assembly. It is a measure of the true elastic stiffness of a bulk specimen of discrete grains. Shear wave velocity is typically measured in the laboratory (e.g., using bender elements) or in-situ (e.g., using a seismic cone penetrometer, sCPT). In...
Resource Type:: Article
Full Text:: Convention. ASCE, Detroit, MI, Engl, 186-196. 471 Evans, T. M., and Frost, J. D. (2007). “Shear banding and

Behavioral Thresholds in Mixtures of Sand and Kaolinite Clay

Creator:: Simpson, D. C. and Evans, T. M.
Abstract:: Nearly all soils are comprised of mixtures of coarse and fine particles. Behavior under mechanical and thermal loading of soil is strongly influenced, and in some cases governed, by the ratio of coarse to fine particles. A better understanding of the fundamental behavior of soil mixtures will provide insight to...
Resource Type:: Article
Full Text:: @oregonstate.edu Manuscript Click here to download Manuscript: 2014 Simpson and Evans behavior_rev13.docx 2

Exploring the phylogenetic affiliations and the trophic mode of Sedecula pulvinata (Sedeculaceae)

Creator:: Trappe, Matthew J., Smith, Matthew E., and Hobbie, Erik A.
Abstract:: Sedecula is a monotypic genus of hypogeous fungi that is rare and endemic to dry conifer forests of the western United States. The only known species, Sedecula pulvinata, was described in 1941 and its taxonomic placement and trophic status have remained uncertain ever since. Here we employ isotopic and molecular...
Resource Type:: Article
Full Text:: trophic mode of Sedecula pulvinata (Sedeculaceae) Matthew J. Trappe1 Department of Forest Ecosystems and

Pine Creek Conservation Area : 2013 mapping and monitoring report

Creator:: Nielsen, Eric M., Noone, Matthew D., Kagan, James S., and Lee, Matthew T.
Abstract:: Pine Creek Conservation Area (PCCA), just northeast of the John Day River in Wheeler County, Oregon, was acquired in 1999-2001 by the Confederate Tribes of Warm Springs with support from the Bonneville Power Administration (BPA), to mitigate for wildlife losses created by the large, hydropower Columbia River Dams, particularly the...
Resource Type:: Technical Report
Full Text:: , and Matthew T. Lee Institute for Natural Resources, Portland State University. 2

The influence of bait and stereo video on the performance of a video lander as a survey tool for marine demersal reef fishes in Oregon waters

Creator:: Hannah, Robert W. and Blume, Matthew T. O.
Abstract:: We evaluated how the use of bait as a fish attractant influenced the species and size composition 20 of demersal fishes viewed with a stereo video lander, at 160 sampling sites at Stonewall Bank, a 21 deepwater rocky reef complex in Oregon waters. We also studied the effectiveness of stereo...
Resource Type:: Article
Full Text:: 4 Robert W. Hannah* 5 Matthew T. O. Blume 6 7 8 Oregon Department of Fish and Wildlife 9

Tests of an experimental unbaited video lander as a marine fish survey tool for high-relief deepwater rocky reefs

Creator:: Hannah, Robert W. and Blume, Matthew T. O.
Abstract:: We describe the development and practical field testing of a rugged, unbaited video lander as a visual survey tool for fishes inhabiting structurally complex, high-relief, deepwater rocky reefs. Our autonomous, high-resolution, low-light, color video lander system utilized a smooth frame design that incorporated a series of breakaway attachments and inexpensive...
Resource Type:: Article
Full Text:: Fig. 6 Robert W. Hannah* Matthew T. O. Blume Oregon Department of Fish and Wildlife

Predicted Redistribution of Ceratomyxa shasta Genotypes with Salmonid Passage in the Deschutes River, Oregon

Creator:: Stinson, Matthew E. T. and Bartholomew, Jerri L.
Abstract:: Aseries of dams on the Deschutes River, Oregon, act as migration barriers that segregate the river system into upper and lower basins. Proposed fish passage between basins would reunite populations of native potamodromous fish and allow anadromous fish of Deschutes River origin access to the upper basin. We assessed the...
Resource Type:: Article
Full Text:: Deschutes River, Oregon Matthew E. T. Stinson and Jerri L. Bartholomew* Department of Microbiology, Oregon

Changes in the atmospheric helium isotope ratio over the past 40 years

Creator:: Lupton, J. and Evans, L.
Abstract:: We have compared the helium isotope ratio in five samples of Pacific marine air spanning the 40 year period between 1973 and 2013 against a secondary gas standard. In a separate experiment we directly compared the ³He/⁴He ratio in air samples collected in 1973 and 2013 at the same location...
Resource Type:: Article
Full Text:: . Wonnacott, R. J., and T. H. Wonnacott (1979), Econometrics, John Wiley, New York. LUPTON AND EVANS

ScholarsArchive@OSU

Innovative Data Acquisition for the Fall Cone Test in Teaching and Research

Food Insecurity in Western US States: Increasing Collaboration between State Agencies and Nonprofit Organizations

Shear Wave Propagation in Granular Assemblies

Behavioral Thresholds in Mixtures of Sand and Kaolinite Clay

Exploring the phylogenetic affiliations and the trophic mode of Sedecula pulvinata (Sedeculaceae)

Pine Creek Conservation Area : 2013 mapping and monitoring report

The influence of bait and stereo video on the performance of a video lander as a survey tool for marine demersal reef fishes in Oregon waters

Tests of an experimental unbaited video lander as a marine fish survey tool for high-relief deepwater rocky reefs

Predicted Redistribution of Ceratomyxa shasta Genotypes with Salmonid Passage in the Deschutes River, Oregon

Changes in the atmospheric helium isotope ratio over the past 40 years

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