An enzyme catalyzing the formation of
O-glucosylzeatin in immature embryos of P. lunatus was
purified 2500 fold using ammonium sulfate precipitation
followed by affinity and anion exchange chromatography.
The enzyme uses trans-zeatin as substrate (Km 28 uM) but
not cis-zeatin. ribosylzeatin, or dihydrozeatin. Both
UDP-glucose and UDP-xylose can serve as...
Agrobacterium tumefaciens is a gram-negative soil bacterium
that causes crown gall tumors on dicotyledenous plants. The
transferred DNA (T-DNA) portion of the A. tumefaciens tumor-inducing
(Ti) plasmid enters infected plant cells and integrates into
plant nuclear DNA. The T-DNA is accompanied into plant cells by the
VirD2 endonuclease covalently attached...
Two Oregon reservoirs contaminated by different mercury
sources were compared for mercury distribution in sediment and
bioaccumulation by fish. The average mercury concentration in
the sediment of Cottage Grove reservoir (0.67 ± 0.05 μg/g dry
wt) was higher than for Dorena Reservoir (0.12 ± 0.01 μg/g dry
wt). Sediment mercury...
A stand level model, PREscription generator under Multiple Objectives (PREMO) was built to generate prescriptions that address multiple objectives for management of the forests of the Applegate River Watershed. PREMO is a part of the landscape model of the Applegate River Watershed Forest Simulation Project and generates prescription choices for...
This investigation of secondary geometry teachers'
decision making in a mathematics curricular reform context
examined the following questions: (a) What planning and
interactive decisions were secondary geometry teachers
making during this time of reform, and (b) what factors
influenced the decisions that these teachers made? In
addition, comparisons were generated...
The purpose of this study was to determine women's perceptions of their physical activity needs and preferences, survey their evaluation of how the Intramural Sports Department accommodates those needs and preferences, and determine if and how intramural sports programming might be adjusted to serve women better. An open-ended survey was...
A methodology for improving quality and reducing life cycle
costs of mechanical systems is described. The principal concept is
that a system can be designed, in the conceptual stages, to be easier to
diagnose for failures. To perform this, functional decomposition and
form to function mapping are utilized both as...
Typical power outputs of commercially available diode lasers are on the
order of 5 milliwatts. This thesis discusses the growth, processing and
fabrication of high power (lOO's of milliwatts) diode lasers. Devices were
grown by Molecular Beam Epitaxy (MBE) and by Metal Organic Chemical
Vapor Deposition (MOCVD). The MOCVD diode...
Few studies, and none in Oregon, have examined the presence and change of water quality parameters over time in popular natural swimming areas. This information is necessary to better understand water quality and risk of illness from either fecal contamination or cross-infection from other swimmers. The purpose of this study...