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Filtering by: Date 2000 Degree Name Doctor of Philosophy (Ph.D.) File Format application/pdf

A new technique for high performance tandem time-of-flight mass spectrometry

Creator:

Katz, Daniel Louis

Abstract:

The main result of this written dissertation is a mathematical solution to the problem of multiplex recording for high performance tandem time-of-flight mass spectrometry. The prescription is to use a time-lag accelerator in the second stage to match the ion optical properties of the decay fragments to the requirements of...

Resource Type:

Dissertation
Remediation of atrazine in irrigation runoff by a constructed wetland

Creator:

Runes, Heather B.

Abstract:

Due to its frequent use in agriculture and its frequent detection in surface water, atrazine was chosen as a model compound to study the treatment capability of a surface flow wetland used to remediate irrigation runoff at a container nursery near Portland, Oregon. Further evaluation of treatment of atrazine was...

Resource Type:

Dissertation
Harvesting hunger : measuring food insecurity and hope in Oregon's Mexican agriculture and seafood workers

Creator:

Reeder, Julie A.

Abstract:

Food Insecurity exists whenever the availability of nutritionally adequate and safe foods or the ability to acquire acceptable foods in socially acceptable ways is limited or uncertain (LSRO, 1990). Factors that increase a household's risk for food insecurity include being low income and not being able to access formal and...

Resource Type:

Dissertation