Index Catalog // ScholarsArchive@OSU

Development of a test procedure for water sensitivity of asphalt concrete mixtures

Creator:: Al-Swailmi, Saleh H.
Abstract:: Environmental factors such as temperature, air, and water can have a profound effect on the durability of asphalt concrete mixtures. In mild climates where good quality aggregates and asphalt cement are available, the major contribution to deterioration may be due to traffic loading and the resultant distress is manifested in...
Resource Type:: Dissertation

Cultural controls for suppressing Phytophthora cinnamomi root rot of blueberry

Creator:: Yeo, John R.
Abstract:: Phytophthora cinnamomi is a soilborne pathogen that causes root rot disease of highbush blueberry (Vaccinium corymbosum L.). When new installations of susceptible blueberry cultivars are infected with P. cinnamomi, plants often fail to grow significant new tissue, greatly reducing yields over the life of the planting. Chemical fungicides are available...
Resource Type:: Dissertation
Full Text:: increase soil electrical conductivity (EC) beyond current recommended salinity guidelines for blueberries

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

Fundamental Studies of the Structure-Property Correlations of Na-ion and K-ion Storage in Non-Graphitic Carbon

Creator:: Li, Zhifei
Abstract:: Grid-scale energy storage systems are urgently needed to increase the flexibility and rigidity of the grid for modern society and take full advantage of the renewable green energy resources such as solar energy and wind energy. Na-ion batteries (NIBs) and K-ion batteries (KIBs) have been emerged as one of the...
Resource Type:: Dissertation
Full Text:: carbon by microwave heating a low-temperature (650˚C) pre-annealed hard carbon. After a brief microwave

The Geology and Geochemistry of the Haquira East Porphyry Copper Deposit of Southern Peru : Insights on the Timing, Temperature and Lifespan of the Magmatic-hydrothermal Alteration and Mineralization

Creator:: Cernuschi Rodilosso, Federico
Abstract:: This dissertation is informally divided into three major sections. In the first section (Chapter 2) I use data from field mapping, isotopic geochronology, whole rock geochemistry and trace element concentrations in zircons to examine the petrology, geochemistry and ages of the Haquira East porphyry copper deposit of southern Peru. In...
Resource Type:: Dissertation
Full Text:: initial fluid injection at >650 ºC to cooling below ~ 350 ºC. However, the high-grade copper and

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

Factors associated with stand establishment and subsequent grain yield of seven wheat cultivars and selected progeny (Triticum aestivum, L em thell) when grown under three diverse environments

Creator:: Vahabian, Mohammad Ali
Resource Type:: Dissertation
Full Text:: , crown depth, adenosine phosphate (ATP) and adenylate energy charge (EC) on stand establish- ment

Dynamic modeling and mitigation of cascading failure in power systems

Creator:: Song, Jiajia
Abstract:: Recent blackout events consistently show that a variety of mechanisms are involved in cascading outages. These cascading mechanisms are irregularly modeled and validated within the existing literature and industry practices. Understanding the relative significance of these different mechanisms is important for choosing which one(s) needs to be modeled for specific...
Resource Type:: Dissertation

Development of bi-based lead-free piezoelectric materials : thin film piezoelectric materials via PVD and CSD routes

Creator:: Jeon, Yu Hong
Abstract:: Piezoelectric materials have been widely used in electromechanical actuators, sensors, and ultrasonic transducers. Among these materials, lead zirconate titanate Pb(Zr[subscript 1‐x]Ti[subscript x])O₃ (PZT) has been primarily investigated due to its excellent piezoelectric properties. However, environmental concerns due to the toxicity of PbO have led to investigations into alternative materials systems....
Resource Type:: Dissertation
Full Text::  at different temperature. The insets show Pr and Ec as a               fuction of the electric field

Chemical Solution Deposition and Advanced Characterization of Pb-free, Bi-based, Piezoelectric Thin Films

Creator:: Mason, Ashley D.
Abstract:: Piezoelectric materials convert mechanical strain into a dielectric displacement, as well as the converse, allowing these materials to be used as sensors, actuators, and transducers. Currently, lead zirconate titanate (PZT) is the primary material used in these applications. Due to environmental toxicity and safety concerns associated with Pb, development of...
Resource Type:: Dissertation
Full Text:: . . . . . . . 72 5.9 Summary plots of (a) Pmax, (b) EC , (c) Pr, and (d) d33,f,ls as a function of cycles for BNT

Biochemical adaptation of deep-sea fishes : susceptibility of dehydrogenases to pressure-inactivation and proteolysis

Creator:: Hennessey, John Patrick
Resource Type:: Dissertation
Full Text:: Proteolysis Abstract approved / áoseph F. Siebenaller Muscle-type lactate dehydrogenase (M4-LDH; EC 1.1.1.27

Adaptive Streaming Methods using Dual Protocols and Reinforcement Learning

Creator:: Gatimu, Kevin
Abstract:: The ubiquity of high quality video and proliferation of mobile devices has contributed to an unprecedented rise in video consumption. HTTP, in conjunction with adaptive streaming, has become the de facto mechanism for delivering the vast majority of video as it readily caters to heterogeneous networks and devices. This dissertation...
Resource Type:: Dissertation
Full Text:: . corrupted frame (slices 2 and 4 are lost). Poor EC via frame copy results in error propagation five frames

The effects of local advisory committees on secondary school vocational programs in Oregon as perceived by committee representatives and administrators

Creator:: Johnston, Marilyn Elaine
Abstract:: Purpose of the Study: The purpose of the study was to determine the characteristics of existing secondary school advisory committees and the effects that these groups have on local vocational programs which they serve. The major purpose of this study was to ascertain, through statistical analyses, the degree to which...
Resource Type:: Dissertation

The influence of phytoplankton on ocean color spectra

Creator:: Mueller, James L.
Resource Type:: Dissertation
Full Text:: I I 400 450 500 550 600 650 WAVELENGTH (NM) Figure 1. Z. Measured ocean color spectra of sea

Protein-protein interactions in the bacteriophage T4 dNTP synthetase complex

Creator:: Shen, Rongkun
Abstract:: The enzymes of dNTP synthesis in T4 infection associate to form a multienzyme complex, the T4 dNTP synthetase complex, facilitating the flow of metabolites en route to dNTPs, and their subsequent flow into DNA. Study of protein-protein interactions helps one to understand how the enzymes in the complex are organized...
Resource Type:: Dissertation

Development of predictive mapping techniques for soil survey and salinity mapping

Creator:: Elnaggar, Abdelhamid A.
Abstract:: Conventional soil maps represent a valuable source of information about soil characteristics, however they are subjective, very expensive, and time-consuming to prepare. Also, they do not include explicit information about the conceptual mental model used in developing them nor information about their accuracy, in addition to the error associated with...
Resource Type:: Dissertation
Full Text:: capacity (FC), pH and EC values

All in a DNA's work : conservation genetics and monitoring of the New Zealand endemic Maui's and Hector's dolphins

Creator:: Hamner, Rebecca Marie
Abstract:: The critically endangered Maui's dolphin (Cephalorhynchus hectori maui) and the endangered Hector's dolphin (C. h. hectori) are endemic to the coastal waters of New Zealand, where their primary threat is fisheries-related mortality. The Maui's dolphin is among the most critically endangered cetaceans in the world, with its remnant population primarily...
Resource Type:: Dissertation

Comparative sanitary and health significance of environmental and clinical Klebsiella species

Creator:: Bagley, Susan Tuck
Resource Type:: Dissertation
Full Text:: clinical and 85'7 (11/13) of the environmental strains as EC positive. There was no significant difference

The effects of ultraviolet irradiation on the photosynthetic apparatus

Creator:: Mantai, Kenneth Edward
Abstract:: The effects of ultraviolet (UV) irradiation on photosynthesis and various partial reactions involving the individual photoreactions of photosynthesis were examined. These reactions included photo-reduction in adapted green algae, Hill reaction, cyclic photophosphorylation, the 520 nm absorbance change and variable-yield fluorescence. The reactions were measured in spinach chloroplasts and isolated chloroplasts...
Resource Type:: Dissertation
Full Text:: case of chlorophyll, any quantum absorbed in the region of 650 -710 nm will excite a Tr electron into

Development, characterization, and piezoelectric fatigue behavior of lead-free perovskite piezoelectric ceramics

Creator:: Patterson, Eric Andrew
Abstract:: Much recent research has focused on the development lead-free perovskite piezoelectrics as environmentally compatible alternatives to lead zirconate titanate (PZT). Two main categories of lead free perovskite piezoelectric ceramic systems were investigated as potential replacements to lead zirconate titanate (PZT) for actuator devices. First, solid solutions based on Li, Ta,...
Resource Type:: Dissertation
Full Text:: }. ..................................................................................................................................... 23 Fig. 2.8 Post-fatigue hysteresis (2x107 cycles at 2Ec) with Eapp decreasing from 4 to 2 Ec

Development of Cu-based Thin Films for Optoelectronic Applications

Creator:: Angelos, Gregory S.
Abstract:: CIGS and CdTe based commercial thin-ﬁlm solar cells (TFSCs) require an absorber thickness greater than 2 µm and 4 µm, respectively, to adequately absorb the solar spectrum. To efficiently extract photoexcited electrons, these TFSCs require relatively defect-free absorbers with high-minority carrier mobility (> 100 cm2V−1s−1) and long lifetime (> 10...
Resource Type:: Dissertation
Full Text:: energy band di- agram when EAabsorber > EAemitter (positive ∆EC a,e). b) A ‘cliff’ at the absorber

Peak reconstruction of single particle mass spectrometry transient signals to recapture ion count and improve SNM ratio measurements

Creator:: Mannino, Mitchell
Abstract:: Quick and accurate measurements of nanoparticles have important applications in biology, environmental and non-proliferation areas. Calculation of isotopic ratios, particularly in special nuclear materials, has relied on integration of nanoparticle counts and limited the capability of counting minor isotopes. Rapid transient detection method of nanoparticles has demonstrated the effectiveness of...
Resource Type:: Dissertation

Pulsed laser deposition and thin film properties of p-type BaCuSF, BaCuSeF, BaCuTeF and n-type Zn₂In₂O[subscript 5] wide band-gap semiconductors

Creator:: Kykyneshi, Robert
Abstract:: Thin films of wide band-gap semiconductors are deposited by the pulsed laser deposition method. Optimal deposition parameters for the individual compounds are reported. A family of p-type BaCuQF (Q = S, Se, Te) ceramics with a layered crystalline structure is investigated for active and passive device applications. Epitaxial films of...
Resource Type:: Dissertation
Full Text:: – 650˚C (data for 280˚C annealed film shown). The average transparency is calculated in the 400-800 nm

Microstructural characterization of YBa₂Cu₃O₇₋₈ thin films with time differential perturbed angular correlation

Creator:: Tom, Dennis W.
Resource Type:: Dissertation
Full Text:: temperatures of 650-800°C, and use of materials that do not oxidize in the evaporation process. A schematic

Certain aspects of electron and coupled energy transfer in cardiac muscle

Creator:: Kettman, John Rutherford
Abstract:: The first area of investigation involves the electron transport of sub-mitochondrial particles and their components. The second area is the synthesis of ATP and other energy linked reactions and components of the energy conservation and transfer apparatus. Investigations on the nature of the tetramethyl-p-phenylenediamine (TMPD) shunt indicated that tetrachlorohydroquinone (TCHQ)...
Resource Type:: Dissertation

Occult cloudwater deposition to a forest in complex terrain : measurement and interpretation

Creator:: Kowalski, Andrew S.
Abstract:: Occult deposition is the direct uptake of cloudwater by vegetation that comes into physical contact with wind-driven cloud droplets. This can be a significant pathway for hydrological and chemical fluxes from the atmosphere to some forests. Methods for estimating cloudwater fluxes to forests are reviewed. Previous studies have neglected the...
Resource Type:: Dissertation
Full Text:: pressure EC eddy correlation EPA Environmental Protection Agency (U.S.) FL liquid water flux Fsed

Mobility of F centers in potassium chloride crystals containing divalent ions

Creator:: Halim, Ester Hung-Quei
Resource Type:: Dissertation
Full Text:: . Samples of KC1:02- crystals, after the mobility measurement were heated to 650°C for one minute, and

Effect of pharmaceuticals and natural products on multidrug resistance mediatedtransport in Caco-2 and MDCKII-MDR1 drug transport models

Creator:: Fan, Ying
Abstract:: This thesis details my investigation of some pharmaceuticals and natural products on the transport of drugs which are substrates of P-glycoprotein (P-gp), such as cyclosporin A (CSA) and digoxin by using Caco-2 and MDCKII-MDR1 drug transport models. Three objectives were performed to address this goal. The first objective was to...
Resource Type:: Dissertation

Characteristics of two noncarotenogenic light sensitive mutants of Scenedesmus obliquus strain D₃

Creator:: Harvey, Geoffrey W.
Abstract:: Two light sensitive mutants of the green alga Scenedesmus obliquus strain D₃ have been characterized. The photodynamic nature of their sensitivity has been established, the subchloroplast site of photodamage has been investigated, and their noncarotenogenic character has been verified. The two mutants possess several similarities, although mutant L. S. -41...
Resource Type:: Dissertation
Full Text:: the effects of 650 nm and 712 nm wavelengths of light each at an intensity of 2 X 10 2 ergs/sec-cm2

Alternative greenhouse tomato production system

Creator:: Albahouh, Muhammed S.
Abstract:: The closed insulated pallet system (CIPS) was evaluated for growth, yield, and fruit quality of tomato genotypes with determinate growth habit. Plants were irrigated with several levels of sodium chloride (NaCl) salinized water. Tomato growth and yield were significantly greater in CIPS than in conventional surface-irrigated containers, regardless of irrigation...
Resource Type:: Dissertation
Full Text:: ) List of Figures (Continued) Figure Page 3.12. Electrical conductivity (EC) of root media at

Measurement of Hall coefficient of liquid solutions of thallium-tellurium

Creator:: Donally, James Maxwell
Abstract:: Measurements are made of the conductivity and Hall mobility of liquid solutions of thallium-tellurium, in compositions ranging from pure tellurium to 69.0 atomic percent thallium. At compositions on the thallium-rich side of intrinsic composition (66.7 atomic percent thallium) both the conductivity and Hall mobility are temperature independent, and the data...
Resource Type:: Dissertation
Full Text:: 600 650 TEMPERATURE (°C) Figure 10. Hall mobility vs temperature in the n- region. .50 .10 10

Orbiting the Genus of False Units: Dynamics of Phage Genomes and Nematode Microbiomes Associated with Pseudomonas spp.

Creator:: Ha, Anh D.
Abstract:: Pseudomonas is a diverse, ubiquitous, and widely studied genus of bacteria. As Pseudomonas species occupy a wide range of niches in the ecosystem, they have made remarkable biological impacts. Better understanding of Pseudomonas biology, genetic diversity, and functional interactions with other organisms and the environment will provide valuable insights into...
Resource Type:: Dissertation

Chemical Solution Deposition and in-situ Structural Characterization of Pb-free, Bi-based, Piezoelectric Thin Films

Creator:: Fox, Austin J.
Abstract:: This work explores the electric field induced strain mechanisms in environmentally benign Bi0.5Na0.5TiO3 (BNT) based piezoelectric thin films. Although BNT-based materials show promise as replacements for toxic Pb-based piezoelectrics, the displacement mechanisms are not consistent between thin films and bulk materials, and the differences have yet to be well understood....
Resource Type:: Dissertation

Investigation of unique marine environments for microbial natural products

Creator:: Thornburg, Christopher C.
Abstract:: Metagenomics has revealed that the marine microbial biosphere is immensely more diverse than originally considered, and is an almost untapped reservoir for the potential discovery of microbial natural products. Despite numerous advances in culturing, biosynthetic engineering and genomic-based screening efforts to uncover much of this diversity in relatively accessible environments,...
Resource Type:: Dissertation
Full Text:: ..........(FDA), European Commission (EC) or in various stages of clinical trial. 6 Figure 1.3. Examples of

New Insights into Mantle Dynamics from Helium Isotopes and Argon Geochronology

Creator:: Konrad, Kevin
Abstract:: Earth’s mantle extends to nearly 3000 km depth, comprises >80 % of Earth’s total volume, and has the largest influence on the primordial and radiogenic heat budget. Despite its importance, the structure and composition of the mantle is still debated. There are three primary models for Earth’s mantle structure that...
Resource Type:: Dissertation

Purification and characterization of polyphenol oxidases of Royal Anne cherries (Prunus avium L.)

Creator:: Benjamin, Namrod David
Resource Type:: Dissertation
Full Text:: . This browning has been attributed to the action of an enzyme called polyphenol oxidase (EC 1. 10. 3

Ecological relationships among feral horses, cattle, and pronghorn in southeastern Oregon

Creator:: McInnis, Michael Lindsay
Resource Type:: Dissertation
Full Text:: Grass Forbs Shrubs Principal Species2 SPRING big sagebrush-bluebunch wheatgrass, EC Oregon March (1 yr

The decay of 4.1 hour Zn⁷¹ and the levels of Ga⁷¹ by the unified model : levels of Zn⁷⁰ by the Zn⁷⁰ (a, aʹ) reaction

Creator:: Cooper, Larry Russell
Resource Type:: Dissertation
Full Text:: Typical delayed coincidence spectrum. 18 6 Zn?1 gamma ray spectrum. 0 -650 key. 21 7 Zn71 gamma ray

Analysis of the regional carbon balance of Pacific Northwest forests under changing climate, disturbance, and management for bioenergy

Creator:: Hudiburg, Tara W.
Abstract:: Atmospheric carbon dioxide levels have been steadily increasing from anthropogenic energy production, development and use. Carbon cycling in the terrestrial biosphere, particularly forest ecosystems, has an important role in regulating atmospheric concentrations of carbon dioxide. US West coast forest management policies are being developed to implement forest bioenergy production while...
Resource Type:: Dissertation
Full Text:: as combined heat and power; FP = Fire Prevention scenario; EC = Economically Feasible scenario; BP

Heat conduction in eccentric annuli

Creator:: Ting, Yine-ping
Abstract:: Muitiregion annular geometry is a basic feature of energy removal systems ranging from advanced heat exchangers to fission reactor fuel rods. For the symmetric cases, the heat conduction through annular regions is well defined. However, for a shift of an annular region, analysis of the system must be made in...
Resource Type:: Dissertation
Full Text:: conduction through ec- centric annuli through a theoretical, numerical, and experimental inves- tigation

Nitrogen fertigation practices to optimize growth and yield of northern highbush blueberry (Vaccinium corymbosum L.)

Creator:: Vargas, Oscar L.
Abstract:: Northern highbush blueberry is a long-lived perennial crop that is well adapted to low soil pH conditions. The plants are often shallow rooted and absorb primarily the ammonium (NH₄) form of nitrogen (N) rather than nitrate-N (NO₃-N). Traditionally, commercial blueberry fields have been irrigated with overhead sprinklers and fertilized using...
Resource Type:: Dissertation
Full Text:: electrical conductivity (EC) at a depth of 0–20 cm in a field of ‘Bluecrop’ blueberry during the first 5

Stereospecific Synthesis of Stereotriad Motifs and Alkenes Using Enantioenriched sp³-Hybridized Carbenoids

Creator:: Xun, Sun
Abstract:: Enantioenriched sp³-hybridized carbenoid reagents CR1R2MX (X = nucleofuge, M = electrofuge) of different types were investigated for the synthesis of polysubstituted alkyl chains by iterative stereospecific reagent-controlled homologation (StReCH) and for the stereospecific connective synthesis of alkenes by eliminative cross-coupling. In the first part, putative enantioenriched α-chloroalkyllithiums (CHRLiCl) were employed...
Resource Type:: Dissertation

Aqueous chemistries for oxide electronics

Creator:: Meyers, Stephen T.
Abstract:: The variegated aqueous chemistries of metal cations are applied to the design and synthesis of non-toxic solution precursors suitable for additive printing of large-area oxide electronics. Polycondensation behaviors of aqueous Al+3 and PO4 +3 are manipulated in the deposition of atomically smooth amorphous aluminum oxide phosphate (AlPO) dielectric films. AlPO...
Resource Type:: Dissertation
Full Text:: acceptor states (QT); the conduction band (EC) remains largely empty (Figure 1.2b). With increasing

Characterization of oxygen and carbon effects in silicon material and MOSFET devices

Creator:: Haddad, Homayoon
Resource Type:: Dissertation
Full Text:: appear at 650 C and ion-implantation defects. There has been considerable progress on the microscopic

Effect of controlled vitamin B-6 intake on in vitro lymphocyte proliferation and interleuken 2 production in young women

Creator:: Wang, Xu, 1954-
Abstract:: In two studies we tested the effect of vitamin B-6 (B-6) intake on in vitro lymphocyte, proliferation and IL-2 production in healthy young women. In Study I, 6 women were fed a constant diet containing 0.84 mg (4.96 μmols) of B-6 for 12 d, and 1.24 mg (7.33 μmols) and...
Resource Type:: Dissertation
Full Text:: . The activity of pyridoxal kinase (EC 2.7.1.35) appears to be zinc- and ATP-dependent (23). Since

Credit card attitudes and practices of Seoul, Korean households in the expanding stage of the family life cycle

Creator:: Kim, Jung-hoon
Resource Type:: Dissertation

⁵⁴Mn, ⁵⁶Ni, and ¹⁴⁴Pm as cosmic-ray chronometers

Creator:: Zaerpoor, Koorosh
Resource Type:: Dissertation
Full Text:: capture (EC)- the capture of an orbital electron by the nucleus. What constitutes a beta decay is the

Understanding of Ferroelectric to Relaxor Phenomenon in Bismuth-based Perovskite

Creator:: Gupta, Sanu K.
Abstract:: It has been well established that ferroelectric to relaxor crossover in piezoelectric ceramics exhibit promising electromechanical and dielectric properties over a wide temperature range, applying sensors and actuators transducers and such. A plethora of research has reported giant strain in various lead-free piezoelectric ceramics and attributed the reasoning to the...
Resource Type:: Dissertation
Full Text:: ] ................................................................................................................. 16 Fig. 2.8: Typical polarization hysteresis loop for ferroelectric materials (Ec is the coercive

An investigation of carbon and nitrogen metabolism through a genomic analysis of the genus Nitrobacter

Creator:: Starkenburg, Shawn R.
Abstract:: The chemolithoautotrophic nitrite oxidizing bacteria (NOB) participate in the biogeochemical cycling of nitrogen by catalyzing and conserving energy from the oxidation of nitrite (NO₂-) to nitrate (NO₃-) via a nitrite oxidoreductase (NXR). The main objective of this work was to comparatively annotate and analyze the genome sequences of Nitrobacter winogradskyi...
Resource Type:: Dissertation

The ortho-para hydrogen conversion on iron oxide-zinc oxide catalysts

Creator:: Svadlenak, Rudolf Eldo
Resource Type:: Dissertation
Full Text:: after hesbing the catalyst mixture at Lj00° C, and one after heatin{ at 600 - 650° C. SLnultaneous

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