Index Catalog // ScholarsArchive@OSU

Water content and electrical conductivity profile measurements for dispersive media using enhanced time domain and frequency domain models

Creator:: Flugstad, Benjamin A.
Abstract:: Water conservation and water quality are rapidly increasing in importance in all areas of the world. The ability to accurately measure soil water content and salinity, over a wide variety of conditions, is key to meeting this need. A set of forward prediction models and waveform interpretation algorithms to extract...
Resource Type:: Dissertation
Full Text:: algorithms to extract Volumetric Water Content (WC) and Electrical Conductivity (EC) profiles vs. position

Geostatistical applications to salinity mapping and simulated reclamation

Creator:: Al-Taher, Mohamad A.
Abstract:: Geostatistical methods were used to find efficient and accurate means for salinity assessment using regionalized random variables and limited sampling. The random variables selected, sodium absorption ratio (SAR), electrical conductivity (EC), and clay content were measured on samples taken over an area of fifteen square miles. Ordinary kriging and co-kriging...
Resource Type:: Dissertation
Full Text:: conductivity (EC), and clay content were measured on samples taken over an area of fifteen square miles

Semi-volatile organic compounds and developing organisms : accumulation in California mountain tadpoles in the field and fish embryo exposures in the laboratory

Creator:: Stanley, Kerri A.
Abstract:: The atmospheric transport and deposition of semi-volatile organic compounds (SOCs), including current and historic use pesticides, polychlorinated biphenyls (PCBs) and polycyclic aromatic hydrocarbons (PAHs), to mountain ecosystems may result in the exposure of tadpoles to these SOCs. This exposure has been implicated in amphibian population declines in California. Tadpoles encounter...
Resource Type:: Dissertation

Simulation of cattle cycle demography: cohort analysis of recruitment and culling decisions in the national beef cow herd

Creator:: Nordblom, Thomas L.
Abstract:: This study expresses the hypothesis that historical patterns of national beef cow herd accumulation and liquidations (the cattle cycle) have been related to investment incentive differences across cow ages through time, resulting each year in changes in herd age structure, performance and potentials for adjustment in subsequent years. A review...
Resource Type:: Dissertation
Full Text:: .405, .587, .962, and .842, respectively. In an alternative run, with parameters set to reflect the

Cholinesterase activity in the neural retina of the developing chick

Creator:: Rynd, Lori Suzanne
Abstract:: Developmental changes in the enzymes acetylcholinesterase (EC 3.1.1.7) and pseudocholinesterase (EC 3.1.1.8) were examined in ovo and in vitro in the neural retina of the developing chick. In addition, investigations of cellular interactions and hormones as possible control mechanisms of enzyme synthesis were made. The specific activity of acetylcholinesterase, a...
Resource Type:: Dissertation
Full Text:: acetylcholinester- ase (EC 3.1.1.7) and pseudocholinesterase (EC 3.1.1.8) were examined in ovo and in vitro in the

New development of beta-chitosan from jumbo squid pens (Dosidicus gigas) and its structural, physicochemical, and biological properties, New development of β-chitosan from jumbo squid pens (Dosidicus gigas) and its structural, physicochemical, and biological properties

Creator:: Jung, Jooyeoun
Abstract:: β-chitin/chitosan extracted from newly utilized jumbo squid (Dosidicus gigas) pens were investigated in respect to their physicochemical properties, polymeric structures, deacetylation and depolymerization characteristics, and antioxidant and antibacterial activities. These functional properties were further compared with α-chitin/chitosan prepared from shrimp shells. Due to the low mineral content (< 1%) and...
Resource Type:: Dissertation

Age-related decrease in resilience against acute redox cycling agents: Critical role of declining GSH-dependent detoxification capacity

Creator:: Thomas, Nicholas O.
Abstract:: Over the past century, life expectancy in the United States has dramatically increased leading to an increasingly aging population with people reaching, and spending more years in ‘old age’. While this unprecedented shift in population demographics represents great strides for humanity, it is not without cost. One consequence of longer...
Resource Type:: Dissertation
Full Text:: menadione (LC50 for young: 405 μM; LC50 for old: 275 μM) with age. Examination of the known

A role for ceramide accumulation in age-related cardiac mitochondrial dysfunction

Creator:: Monette, Jeffrey S.
Abstract:: Ceramides are a group of lipids in the sphingolipid family that are potent cell signaling molecules. Elevations in ceramide levels above the norm generally lead to apoptosis. Evidence from in vitro studies suggests that accumulation of ceramides within mitochondria leads to dysfunction of the mitochondria. This includes inhibition of the...
Resource Type:: Dissertation

Impact of Igneous Mineralogy on the Composition and Metabolic Function of Microbial Biofilms in a Thermal Suboceanic Crustal Aquifer

Creator:: Smith, Amy R.
Abstract:: Igneous oceanic crust encompasses ~60% of Earth’s surface and is composed of basalt glass and mafic, ultramafic, and felsic minerals. A vast marine aquifer lies within the crust, exchanging geochemically altered fluids with seawater from the overlying ocean at ridge crests, flanks, seamounts, and outcrops where permeable crust is exposed....
Resource Type:: Dissertation

The Influence of Microbial Communities on Spatiotemporal Elemental Cycling in Coastal Margins Revealed by Community- and Population-level Genomics and Proteomics

Creator:: Kieft, Brandon P.
Abstract:: Biotic and abiotic processes at continent-ocean interfaces cycle a disproportionate mass of carbon and nutrients relative to their global surface area, and microbial activity is a principal determinant of organic and inorganic matter flux in these transition zones. Most studies using modern high-throughput ‘omics techniques to link microorganisms with costal...
Resource Type:: Dissertation

ScholarsArchive@OSU

Water content and electrical conductivity profile measurements for dispersive media using enhanced time domain and frequency domain models

Geostatistical applications to salinity mapping and simulated reclamation

Semi-volatile organic compounds and developing organisms : accumulation in California mountain tadpoles in the field and fish embryo exposures in the laboratory

Simulation of cattle cycle demography: cohort analysis of recruitment and culling decisions in the national beef cow herd

Cholinesterase activity in the neural retina of the developing chick

New development of beta-chitosan from jumbo squid pens (Dosidicus gigas) and its structural, physicochemical, and biological properties, New development of β-chitosan from jumbo squid pens (Dosidicus gigas) and its structural, physicochemical, and biological properties

Age-related decrease in resilience against acute redox cycling agents: Critical role of declining GSH-dependent detoxification capacity

A role for ceramide accumulation in age-related cardiac mitochondrial dysfunction

Impact of Igneous Mineralogy on the Composition and Metabolic Function of Microbial Biofilms in a Thermal Suboceanic Crustal Aquifer

The Influence of Microbial Communities on Spatiotemporal Elemental Cycling in Coastal Margins Revealed by Community- and Population-level Genomics and Proteomics

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