Search Constraints

Start Over
Filtering by: Has journal Soil Science Society of America Journal Remove constraint Has journal: Soil Science Society of America Journal Degree Name Doctor of Philosophy (Ph.D.) Remove constraint Degree Name: Doctor of Philosophy (Ph.D.)

Search Results

  • π-line reconstruction formulas in computed tomography

    Creator:
    Hass, Ryan Andrew
    Abstract:
    X-ray computed tomography is a noninvasive imaging modality capable of reconstructing exact density values of 3D objects. Computed tomography machines are deployed across the world to provide doctors with an image that reveals more detail than a standard x-ray image. We investigate algorithms based on exact computed tomography reconstruction formulas...
    Resource Type:
    Dissertation
    Full Text:
    hass_phd_thesis.dvi AN ABSTRACT OF THE THESIS OF Ryan Andrew

  • Zooplankton of the Galapagos Islands

    Creator:
    Figueroa, Diego
    Abstract:
    The marine climate of the Galapagos is spatially and seasonally heterogeneous. A taxonomically comprehensive study of Galapagos zooplankton has never been done. This study is an initial effort to establish the distribution and community structure of zooplankton in the Archipelago. I collected zooplankton samples by vertical tows over the Galapagos...
    Resource Type:
    Dissertation
    Full Text:
    was invited by Dr. Edgar Graham, who was the head of the marine science department at CDRS, to

  • Zooplankton and hydrography of Alsea Bay, Oregon, September 1966 to September 1968

    Creator:
    Matson, Adrian Luther
    Resource Type:
    Dissertation
    Full Text:
    Zooplankton and hydrography of Alsea Bay, Oregon

  • Zoogeography of pelagic shrimps (Natantia: Penaeidea and Caridea) in the North Pacific Ocean

    Creator:
    Wasmer, Robert Allen
    Abstract:
    A study was done on the zoogeography of species of oceanic shrimp in the North Pacific from 22°N to 56°N and from 124°W to 145°E, using samples of shrimp collected from 1954 to 1969. These collections were made during the following cruises: John R. Manning Cruise 22, and the Hugh...
    Resource Type:
    Dissertation
    Full Text:
    off the west coast of North America resembles species of Gennadas in having only one pair of mobile

  • Zoogeography and ecology of western Beaufort Sea polychaeta

    Creator:
    Bilyard, Gordon Richard
    Resource Type:
    Dissertation
    Full Text:
    of the Humble Oil Company by a grant through the Smithsonian Institution and the National Science

  • Zimbabwean counselors' knowledge of and attitudes toward HIV/AIDS

    Creator:
    Richards, Kimberly A.
    Abstract:
    Acquired Immune Deficiency Syndrome (AIDS) has become the world's foremost health threat and is the number one killer in Zimbabwe. Acquired Immune Deficiency Syndrome impacts not only the individual who has AIDS, but on nuclear and extended families, and all aspects of society in Zimbabwe. Since studies have indicated that...
    Resource Type:
    Dissertation
    Full Text:
    AIDS, but on nuclear and extended families, and all aspects of society in Zimbabwe. Since studies have

  • Zeros of Certain Combinations of Products of Eisenstein Series

    Creator:
    Klangwang, Jetjaroen
    Abstract:
    In this dissertation, we begin by presenting the result of F. K. C. Rankin and Swinnerton-Dyer on the location of the zeros of the Eisenstein series for the full modular group in the standard fundamental domain. Their simple but beautiful argument shows that all zeros are located on the lower...
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE DISSERTATION OF Jetjaroen Klangwang

  • Zero kinetic energy photoelectron spectroscopy of polycyclic aromatic hydrocarbons

    Creator:
    Zhang, Jie
    Abstract:
    In this dissertation, I present electronic spectra of a few polycyclic aromatic hydrocarbons (PAHs): tetracene, pentacene, pyrene, benzo[g,h,i]perylene and benzo[a]pyrene using resonantly enhanced multiphoton ionization (REMPI) and zero kinetic energy (ZEKE) photoelectron spectroscopy. The work of tetracene and pentacene also combine a laser desorption source with a ZEKE spectrometer, demonstrating...
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE DISSERTATION OF Jie Zhang for the

  • Zero Kinetic Energy Photoelectron Spectroscopy of Polycyclic Aromatic Hydrocarbons

    Creator:
    Harthcock, Colin
    Abstract:
    In this dissertation, I describe spectroscopic studies of jet-cooled polycyclic aromatic hydrocarbons (PAH) and one nitrogen substituted PAH (PANH) using pulsed field zero kinetic energy (ZEKE) photoelectron spectroscopy and resonantly enhanced multiphoton ionization (REMPI) spectroscopy. Recently, there has been a demand for far-infrared (FIR) spectral information of astrophysically relevant molecules...
    Resource Type:
    Dissertation
    Full Text:
    Zero Kinetic Energy Photoelectron Spectroscopy of Polycyclic

  • Youth-Caseworker Relationships and Academic Resilience of Youth in Foster Care

    Creator:
    Jaramillo, Jamie
    Abstract:
    Academic success is a salient domain of youth development and is related to positive lifelong outcomes among youth in foster care. However, youth in foster care experience compounding adversities, including maltreatment and foster care placement itself, which put them at risk of academic disengagement and underachievement. Despite these adversities, academic...
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE DISSERTATION OF Jamie Jaramillo