The relationship between carbon burial and sedimentation in reservoirs is unknown, exposing gaps in our fundamental understanding of the transport, processing, and deposition of sediment and organic matter in fluvial and lacustrine systems and contributing to uncertainty in our understanding of the net impact of dams to the global carbon...
The major purpose of this study was to determine the current status
of family life/sex education programs in the public high schools of
Oregon. A mail questionnaire was submitted to all health teachers in
all the high schools in Oregon. The questionniare was mailed twice to
447 health teachers in...
The purpose of this study was to investigate the relationships
between age, sex, eye-hand coordination, the time it takes individuals
to learn how to manipulate dental floss between all of their teeth, and
the time it takes individuals to learn how to effectively clean their
teeth with dental floss.
The...
The mixed metal compound, Chromated Copper Arsenate, or CCA, has been widely used as a wood preservative. The metal ions in CCA, CrO²⁻₄, Cu²⁺, and AsO³⁻₄, have been found in contaminated surface and subsurface soils and groundwater nearby some wood preservative facilities and nearby wood structures. Iron oxides are a...
This dissertation concentrates on the controlling factors on the instability of the Laurentide Ice Sheet (LIS) and their effects on abrupt climate change. Northern Hemisphere climate fluctuated abruptly during the last deglaciation possibly related to variability in Atlantic meridional overturning circulation (AMOC) and reduced aerial extent of the LIS. Reductions...
The purpose of this investigation was to develop a
valid and reliable instrument to assess Oregon high school
students' nutrition information.
The following steps were taken in order to achieve this
purpose.
First, a review of the literature pertaining to high
school nutrition curriculum was conducted.
Second, numerous published tests...
Ultrafast spectroscopy has recently gained momentum as a powerful, noninvasive characterization toolset capable of studying a diverse array of samples with applications in chemistry, physics, biology, engineering, and more. Two popular ultrafast spectroscopic techniques include femtosecond transient absorption (fs-TA) and femtosecond stimulated Raman spectroscopy (FSRS). The latter of these techniques...
Maize defective kernel (dek) mutants identify genes necessary for the
successful passage of embryos through the embryogenic and maturation
phases of embryo development. The goal of this thesis was to characterize the
developmental potential of three dek mutants that appeared to be
morphologically blocked prior to the maturation phase of...