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Filtering by: Advisor Milne, David H. Remove constraint Advisor: Milne, David H. Degree Name Master of Science (M.S.) Remove constraint Degree Name: Master of Science (M.S.)

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  • Oxygen consumption by Dendroctonus pseudotsugae Hopkins

    Creator:
    King, Keith Irl
    Abstract:
    Oxygen uptakes of Douglas-fir beetles collected during November 1969 through April 1970 were measured at different experimental temperatures. The oxygen uptakes of adult beetles increased at each experimental temperature as the seasons progressed from winter to spring. The larval and pupal Douglas-fir beetles, collected in February 1970, had lower oxygen...
    Resource Type:
    Masters Thesis
    Full Text:
    . David H. Milne Oxygen uptakes of Douglas-fir beetles collected during November 1969 through April 1970

  • Aberration Correction of Optical Wavefronts with Sequential, Genetic, and Deep Learning Algorithms

    Creator:
    Weller, Jesse A.
    Abstract:
    In this work, we systematically explore the effectiveness of optical aberration correction over a wide range of optical depths using the Segmented and Zernike Polynomial bases. We manufacture a set of 16 optical phantom samples consisting of a clear polyester resin substrate embedded with varying concentrations of aluminum oxide (Al₂O₃)...
    Resource Type:
    Masters Thesis
    Full Text:
    Wavefronts with Sequential, Genetic, and Deep Learning Algorithms Abstract approved: David H. McIntyre In

  • Development of Diagnostic Assays for Race Differentiation of Podosphaera macularis

    Creator:
    Block, Mary H.
    Abstract:
    Hop powdery mildew (Podosphaera macularis) was confirmed in the Pacific Northwest in 1996. Before 2012, the most common race of P. macularis was able to infect plants that possessed powdery mildew resistance based on the R-genes Rb, R3, and R5. Post 2012, two additional races of P. macularis were discovered...
    Resource Type:
    Masters Thesis
    Full Text:
    approved: ______________________________________________________ David H. Gent Hop powdery

  • The Influence of Nitrogen Fertility on Hop Quality, Pest Management, and the Stability of Biological Control

    Creator:
    Iskra, Anne E.
    Abstract:
    A multi-year field study was conducted in Oregon and Washington to evaluate the influence of nitrogen fertilization rate and timing on cone quality, nitrate accumulation in cones, severity of powdery mildew (caused by Podosphaera macularis), arthropod pests, and the stability of conservation biological control of the twospotted spider mite (Tetranychus...
    Resource Type:
    Masters Thesis
    Full Text:
    : ______________________________________________________ David H. Gent A multi-year field study was conducted in Oregon and Washington to

  • Identification and distribution of the mating-type locus and development of cleistothecia of Podosphaera macularis

    Creator:
    Wolfenbarger, Sierra N.
    Abstract:
    Podosphaera macularis, causal agent of hop powdery mildew, is known to produce cleistothecia (syn. chasmothecia) in eastern North America and Europe, but ascocarps are not reported from the Pacific Northwestern region of North America. Reasons for the apparent absence of cleistothecia in the Pacific Northwest are unknown. We established that...
    Resource Type:
    Masters Thesis
    Full Text:
    : _____________________________________________________________________ David H. Gent Podosphaera macularis, causal agent of hop powdery mildew, is known to

  • A magneto-optic trap for rubidium

    Creator:
    Delfs, Holger
    Resource Type:
    Masters Thesis
    Full Text:
    Title: A MagnetoOptic Trap for Rubidium Redacted for Privacy Abstract approved: David H. McIntyre

  • Optically stabilized diode laser using high-contrast saturated absorption

    Creator:
    Cuneo, Christopher J.
    Abstract:
    Doppler-free saturation spectroscopy in an optically thick atomic vapor is used in an optical-feedback configuration for two semiconductor diode laser systems. One laser system consists of an unmodifed, commercially available diode laser. The other laser system consists of a diode laser initially stabilized by optical feedback from a diffraction grating....
    Resource Type:
    Masters Thesis
    Full Text:
    Saturated Absorption . Abstract approved: David H. McIntyre Doppler-free saturation spectroscopy in an

  • The three-grating optical interferometer used as a monitoring and stabilization device for an atomic interferometer

    Creator:
    Lopez, Peggy A.
    Abstract:
    The three-grating optical interferometer is studied to identify restrictions on alignment and improve stability. A description of the way a three-grating interferometer works is given as well as a method for proper set up. The overall power loss through the three gratings is measured and can be used to estimate...
    Resource Type:
    Masters Thesis
    Full Text:
    Abstract approved: David H. McIntyre The three-grating optical interferometer is studied to identify

  • Optical trapping and acoustical probing of ultrasound contrast agent microbubbles confined in capillaries

    Creator:
    Almaqwashi, Ali
    Abstract:
    In an effort to develop an optical-acoustical understanding of ultrasound contrast agent microbubble dynamics in a micro-environment that resembles blood vessels, this thesis presents experimental work on optical trapping and acoustical probing of ultrasound contrast agent microbubbles confined in regenerated cellulose capillaries. First, we showed by acoustical means that the...
    Resource Type:
    Masters Thesis
    Full Text:
    : _______________________________________ David H. McIntyre In an effort to develop an optical-acoustical understanding of

  • Measurement of optical bandgap energies of semiconductors

    Creator:
    Russell, Joshua A.
    Abstract:
    A method for bandgap energy determination using di use re ection is presented and compared to the traditional integrating sphere method. We have found the bandgap energies of ZnO, TiO₂, Cu₂O, Si, SnZrS₃, SnZrSe₃, Sn₂S₃, and BiCuOSe powders with both methods and found they agree within 0.03 eV. We have...
    Resource Type:
    Masters Thesis
    Full Text:
    Energies of Semiconductors Abstract approved: David H. McIntyre A method for bandgap energy