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Filtering by: Has journal Organic Geochemistry Remove constraint Has journal: Organic Geochemistry Degree Name Honors Bachelor of Science (H.B.S.) Remove constraint Degree Name: Honors Bachelor of Science (H.B.S.)

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  • Distribution and origin of organic matter preserved in modern surface sediments throughout Coastal SE Alaska

    Creator:
    Walinsky, Sarah E.
    Abstract:
    Twenty seven modern (top 1-2cm) sediment samples from multicores retrieved from throughout coastal SE Alaska were analyzed for their organic matter content and the source composition. Total organic carbon (TOC) as well as biogenic silica (bioSi), and calcium carbonate (CaCO3) content were analyzed to evaluate the organic matter content and...
    Resource Type:
    Honors College Thesis
    Full Text:
    : Distribution and Origin of Organic Matter Preserved in Modern Surface Sediments throughout Coastal SE Alaska

  • Analysis of particulate organic matter distribution along surface waters of the California Current

    Creator:
    Welch, Kylie
    Abstract:
    Water samples along the Washington, Oregon and California coastline were collected using high resolution sampling and analyzed to determine particulate organic carbon and nitrogen concentrations. Over 28 days during August 2011, nearly 1500 samples were collected aboard the R/V Wecoma (W1108C) using a semi-automated filtration system. Additional subsurface samples were...
    Resource Type:
    Honors College Thesis
    Full Text:
    Analysis of Particulate Organic Matter Distribution

  • Metabolomic Analysis of Oregon Coast Sediment Pore Waters using Ultrahigh Resolution Mass Spectrometry

    Creator:
    Merlo, James B.
    Abstract:
    One of the principal drivers of climate change is the concentration of greenhouse gases such as CO2 in the atmosphere. A large portion of this CO2 ends up in the waters off the continental coasts where it transforms into biomass. The major sink for this matter is the ocean sediments...
    Resource Type:
    Honors College Thesis
    Full Text:
    Barbara Basin, Organic Geochemistry, 2020, Volume 139, 103879, ISSN 0146-6380, https://doi.org/10.1016

  • The effects of X-ray CT scanning on microbial communities in sediment cores

    Creator:
    Ewton, Erica
    Abstract:
    Using X-ray computed tomography (CT) scanning to characterize the physical characteristics of soil and sediment cores allows scientists to observe and analyze stratigraphy without destroying the integrity of different layers. Microbiologists often work with geologists to characterize the microbial communities in such cores; however, X-rays are known to be destructive...
    Resource Type:
    Honors College Thesis
    Full Text:
    : Percent organic matter.……………………………………..……………………14 1 1. Introduction X-ray computed

  • Using An Array of NE Pacific Margin Sediment Samples to Link Land and Ocean Responses to Glacial-Interglacial Climate Variability

    Creator:
    Wilson, Kiya L.
    Abstract:
    Variability in the terrigenous (land-derived) fraction of marine sediments, including pollen and rock fragments, reflects the effects of regional climate change on continentally derived runoff, ice extent, vegetation and ocean circulation. The transport of this continental material to the seafloor must be understood in order to interpret the terrigenous sediment...
    Resource Type:
    Honors College Thesis
    Full Text:
    particles of mud, rock, and organic matter that continuously accumulate at the bottom of the ocean as new

  • Response of bZIP10-Overexpressing Brachypodium distachyon to Zinc

    Creator:
    Nguyen, Tinh An
    Abstract:
    The micronutrient zinc (Zn) plays a key role in the animal and plant kingdoms. Zndeficient soils impact plant production and can cause yield reductions of 40% or more. Zn is also important for both human and plant development as a cofactor for over 200 enzymes. Zn-deficiency symptoms in plants include...
    Resource Type:
    Honors College Thesis
    Full Text:
    low redox conditions within organic matter (Reichmann, 2002). Zinc Deficiency in Soil

  • ⁴⁰Ar/³⁹Ar Ages and Trace Element Variations in Colombian Emeralds

    Creator:
    Svadlenak, Ellen
    Abstract:
    The Colombian emerald deposits are globally unique because they are hosted in hydrothermally altered black shales on either side of the Cordillera Oriental. We used electron microprobe analysis to study variations in trace element concentrations in transects across emeralds, and used the ⁴⁰Ar/³⁹Ar dating method to determine the age of...
    Resource Type:
    Honors College Thesis
    Full Text:
    the mountain range, in the Magdalena Basin, emerald deposits are found in organic rich black shale

  • Arsenic and Zinc Deficiency Induced Changes in Pancreatic Beta Cells

    Creator:
    Cao, Annie L.
    Abstract:
    Pancreatic beta cells produce and release insulin, a vital hormone that regulates blood glucose levels, and their dysfunction contributes to the development of diabetes mellitus. Dietary zinc deficiency and exposure to the toxicant inorganic arsenic have both independently been associated with diabetes, although the effects of their combination on pancreatic...
    Resource Type:
    Honors College Thesis
    Full Text:
    . Inorganic Arsenic Exposure The element arsenic exists in two forms: organic, which is found in foods, and

  • Designing surveys to investigate the impacts of wildfire smoke on human health

    Creator:
    Attridge, Samuel J.
    Abstract:
    Wildfires are increasing in frequency. One area of research interest centers on the pollutants within wildfire smoke, including but not limited to particulate matter and polycyclic aromatic hydrocarbons. These chemicals are associated with exacerbation of respiratory, cardiovascular, dermatological, reproductive, oncological, gastrointestinal, and infectious conditions. As wildfires becoming increasingly prevalent, it...
    Resource Type:
    Honors College Thesis
    Full Text:
    in PM2.5 are organic materials, minerals, elemental carbon, ammonia, and sulfate (Cao et al., 2018

  • Land Use Impacts on Water Quality in Oak Creek Watershed

    Creator:
    Johnson, Keira R.
    Abstract:
    Understanding the relationships between land use, water quality, and groundwater is crucial for ecological, economic, and water management decisions. This study aims to provide a comprehensive analysis of the land use activities and hydrologic processes influencing the water quality of Oak Creek watershed. Objectives of this study were: 1) to...
    Resource Type:
    Honors College Thesis
    Full Text:
    , deuterium (δ2H) and oxygen-18 (δ18O), can be used alongside geochemical tracers (e.g., ions, organic