Digital Commons Network^™

River, Tidal And Wind Interactions In A Deltaic Estuarine System, Gregg Snedden

LSU Doctoral Dissertations

The balance between river and marine influences is important in governing landscape sustainability in river deltas. River- and atmospherically driven sea level variability, sediment loading, and estuary-ocean exchange in the Mississippi River delta are examined in this study. Subtidal estuarine sea level variability in the Breton Sound estuary was driven by a combination of remote atmospheric forcing outside the estuary over the continental shelf and controlled river inputs through a gated diversion structure at the estuary head. The highly-frictional deltaic landscape acted as a low-pass filter to coastal fluctuations near the estuary mouth. When substantial quantities river water were discharged …

Retention And Transport Of Arsenic In Soils, Hua Zhang

LSU Doctoral Dissertations

Arsenic transport in soils and aquifers is highly dependent on the adsorption-desorption reactions in the solid phase. Results from our kinetic batch experiments indicated that adsorption of arsenate [As(V)] was highly nonlinear and strongly kinetic. Desorption of As(V) were hysteretic in nature and a significant amount of As(V) was irreversibly adsorbed on all soils. Results from column experiments indicated strong As(V) retardation followed by slow release or extensive tailing of the breakthrough curves (BTCs). Sharp decrease in As(V) concentration during flow interruption verified the extensive non-equilibrium condition which was likely due to the dominance of kinetic retention processes. We evaluated …

Synthesis, Characterization And Properties Of Cooper(Ii) Beta-Diketonate Macrocycles, Sylvester Burton

LSU Doctoral Dissertations

This dissertation deals with the synthesis and properties of multidentate β-diketone ligands and their transition-metal complexes. (1) We prepared two bis(β-diketones), C₁BAH₂ and p-XBAH₂ (see sketch below), determined their crystal structures, and studied their reactions with copper(II). We envisioned that they would form macrocyclic complexes with 3-6 metal atoms. In both cases, although the initial products are soluble, as expected for the desired molecular products, we were unable to isolate well-behaved molecular solids. In the case of C₁BAH₂, this may be because the cyclic product requires an unusual combination of conformations of …

Antimicrobial Activity Of Cpc And Asc Against Foodborne Pathogens And The Physiological Effect On Fresh-Cut Cantaloupe Cubes At Refrigerator Temperatures, Allison Marie Dumas

LSU Master's Theses

In the last few decades, fresh-cut fruit products have gained popularity with consumers. They require little to no further processing prior to consumption. Fresh-cut products also make fruits and vegetables more conveniently available to consumers year-round. There are limitations, however, to fresh-cut fruit and vegetables in the marketplace. These products are very perishable and could become contaminated with foodborne pathogens. Most fresh-cut fruits and vegetables will only last a short period of time at refrigerator temperatures. There are many possible routes of bacterial contamination in the fresh-cut produce industry. There is a need for antimicrobial compounds that can be applied …

Genetic Effects Influencing Salinity And Cold Tolerance In Tilapia, Alvaro M. Armas-Rosales

LSU Master's Theses

Genetic effects influencing salinity tolerance (ST) and cold tolerance (CT) were evaluated in two full diallel mating designs using six tilapia varieties: Oreochromis aureus (BL), O. mossambicus (MO), O. niloticus (NI), O. niloticus crossbreds (RE), Mississippi commercial strain (MC) and Florida red tilapia (FL). Statistical analyses provided estimates of direct heterosis (h_i), cross heterosis (h_ij), maternal effects (m_i), line effects (l_i), reciprocal and specific reciprocal effects (r_ij and r**_ij), and general and specific combining abilities (GCA and S_ij). Analysis of genetic effects for ST indicated that FL …

Gamete And Cell Technologies For Use In Biological Resource Banking, Liesl Nel-Themaat

LSU Doctoral Dissertations

Biological resource banking is becoming important for endangered species conservation. A series of experiments were conducted to address issues concerning collection and utilization of biomaterials from Gulf Coast Native (GCN) sheep (model species) (Ovis aries) and Eland antelope (Taurotragus oryx). In the first experiment, two ejaculates were collected 10 minutes apart from each of five rams three times a week for three weeks to maximize output and minimize handling time. Semen volume, concentration and total number of spermatozoa were significantly greater in first ejaculates, whereas pre-cooled, cooled and post-thaw motility, as well as sperm survival, were greater in second ejaculates. …

Determinants Of Local Calcium Signaling In Retinal Amacrine Cells, Madhumita Sen

LSU Doctoral Dissertations

Amacrine cells mediate complex lateral signaling in the inner plexiform layer of the vertebrate retina. Glutamate is the primary excitatory neurotransmitter that shapes the retinal circuitry by activating ionotropic glutamate receptors (iGluRs)and metabotropic glutamate receptors (mGluRs). One step in understanding the signaling in the inner retina is to understand the role and expression patterns of these glutamate receptors. The expression of iGluRs in amacrine cells is well documented in the literature. This study addresses the localization of Group I mGluRs in the retina. Pre-embedding immunocytochemistry combined with electron microscopy was used to study the expression of Group I mGluRs in …

Using The Rod: Education, Punishment, And The New Woman In Fin De Siã¨Cle British Literature, Kristin C. Ross

LSU Doctoral Dissertations

This study examines the relationship between female education and punishment in the British novel of the fin de siécle. It considers the “New Woman” (the emancipated, intellectualized, and unmarried prototypical feminist appearing in late nineteenth-century culture) in light of how female education affects fictional characterizations of her. Female education in the “New Woman” and her fictional counterparts worked to destabilize class and gender hierarchies for Victorian Society, producing anxiety in its culture and texts. To defuse this anxiety, authors frequently demonstrated the consequences of espousing the feminism driving the “New Woman” and the education producing her. The education she desired/received …

Annual Review Of The World Pheasant Association 2005/2006, World Pheasant Association

Galliformes Specialist Group and Affiliated Societies: Reports and Other Materials

Chairman of Trustees' report, G. R. (Dick) Potts

Treasurer's report for the year ended April 30, 2006, J. A. Sampson

Responding to UK Government consultations affecting captive stocks, Dick Potts and Simon Mayes

Specialist Groups: Global networks of technical excellence

WPA around the world: highlights from the chapters

Does the Blyth's tragopan have a future in captivity? Michel Saint Jalme and Sophie Chavanne

Cheer pheasant conservation summit in Kathmandu, Peter J. Garson and Hem S. Baral

Making forests more sustainable in Palas Valley, District Kohistan, Pakistan, Rab Nawaz

Key findings from the 2005 annual species surveys in UK and Germany, …

Nanoparticles: Actual Knowledge About Occupational Health And Safety Risks And Prevention Measures, Claude Ostiguy, Gilles Lapointe, Luc Ménard, Yves Cloutier, Mylène Trottier, Michel Boutin, Monty Antoun, Christian Normand

États de la question, rapports d’expertise et revues de littérature

New materials with unique properties

A new industrial revolution based on nanotechnologies is underway. The enthusiasm for these technologies is sweeping the planet, generating several billions of dollars of investment annually in research and development (R&D). Using current technologies, we can handle materials and synthesize products at the atomic level; nanoparticles demonstrate properties that are completely different from products with the same composition but larger dimensions. The era of nanomaterials and nanotechnologies promises to be one of major scientific developments and breakthroughs that in the not too distant future will permanently affect our everyday lives. Several of these products are …

The Virtual Dialectic: Rethinking The Matrix And Its Significance, David J. Gunkel

Faculty Articles, Papers, and Other Scholarship

No abstract provided.

Contextualizing The Losses Of Allotment Through Literature, Kristen A. Carpenter

Publications

In this article, the Author undertakes a law and literature approach to a major Indian law problem: understanding the losses of allotment. Allotment was a mid 19th - early 20th century federal legislative program to take large tracts of land owned by Indian tribes, allocate smaller parcels to individual Indians, and sell off the rest to non-Indians. The idea was that Indians would abandon traditional patterns of subsistence to become American-style farmers, and great tracts of land would be freed up for the advance of white settlement. A key component of the federal government's larger project of assimilating Indians into …

Rethinking The Great Lakes Compact, Mark Squillace

Publications

On December 13, 2005, the Governors and Premiers of the Great Lakes states and provinces signed a Compact and Agreement that commits the parties to a rigorous program to regulate individual water uses, with citizen suits to enforce the requirements. While the Great Lakes-St. Lawrence River Basin Water Resources Compact and companion Agreement are commendable in many respects, this Article argues that people who care about the future of the Great Lakes should urge policymakers to reject the current proposals and rethink the entire approach. The proposed compact is fundamentally flawed and will not achieve the ultimate stated goal of …

Comparative Toxicosis Of Sodium Selenite And Selenomethionine In Lambs, A. K. Tiwary, B. L. Stegelmeier, K. E. Panter, L. F. James, Jeffery O. Hall

Animal, Dairy, and Veterinary Science Faculty Publications

Excess consumption of selenium (Se) accumulator plants can result in selenium intoxication. The objective of the study reported here was to compare the acute toxicosis caused by organic selenium (selenomethionine) found in plants with that caused by the supplemental, inorganic form of selenium (sodium selenite). Lambs were orally administered a single dose of selenium as either sodium selenite or selenomethionine and were monitored for 7 days, after which they were euthanized and necropsied. Twelve randomly assigned treatment groups consisted of animals given 0, 1, 2, 3, or 4 mg of Se/kg of body weight as sodium selenite, or 0, 1, …

Detection Of Early Stages Of Myxobolus Cerebralis In Fin Clips From Rainbow Trout (Onchorynchus Mykiss), Ramona T. Skirpstunas, J. Hergert, Thomas J. Baldwin

Animal, Dairy, and Veterinary Science Faculty Publications

A nested polymerase chain reaction (PCR) assay was used to detect early stages of Myxobolus cerebralis in caudal and adipose fin samples from rainbow trout (RT). To determine sensitivity, groups of 10 RT were exposed to 2,000 M. cerebralis triactinomyxons/fish for 1 hour at 15 degrees C and subsequently moved to clean recirculating water. Fish were held for 2 and 6 hours and 1, 2, 3, 5, 7, 10, 30, and 60 days before sampling by nonlethal fin biopsy. Nested PCR performed on fin clips showed that M. cerebralis DNA was detected in caudal fin tissue in 100% of fish …

Defining (Multiple) Selves: Reflections On Fieldwork In Jakarta, Chang Yau Hoon

Research Collection School of Social Sciences

The 'Self' in late-modernity is never singular but multiplies across different discourses, practices and positions. It is constructed through difference. It is only through a relation to the 'Other' that the 'Self' can be defined. This paper endeavours to map the endless negotiations of my 'Self' as male Australian academic of Chinese descent, a Malaysian citizen, a Bruneian resident, and an Indonesian specialist, over a period of fieldwork in Jakarta in 2004. It discusses how I defined my multiple 'Selves' to different individuals and communities, how they in turn defined me, and how these constructions were always shifting. Depending on …

Speaking With Numbers: Scientific Literacy And Public Understanding Of Science, Levent Sevgi̇

Turkish Journal of Electrical Engineering and Computer Sciences

Public understanding of science and scientific literacy is discussed. Scientific method, scientific process and scientific filter are reviewed accordingly. Basic terms of measurement and numerical calculation are outlined. Finally, fundamental requirements of scientific literacy and critical response skills are presented.

Secure Digital Communication Using Chaotic Symbolic Dynamics, Ajeesh P. Kurian, Sadasivan Puthusserypady

Turkish Journal of Electrical Engineering and Computer Sciences

One of the major hurdles in implementing chaotic communication schemes is the synchronization of chaotic systems. For the last two decades, numerous contributions of varying successes have been made by researchers from different disciplines for the synchronization of chaotic systems. Symbolic dynamics based synchronization method is shown to be capable of providing high quality synchronization (HQS), which is essential for reliable communication. In this work, using this method, a secure digital communication system is proposed. The well known piece-wise linear 1-D map such as tent map and Bernoulli shift map are used for this study. Since the information is dynamically …

Cover And Contents

Turkish Journal of Electrical Engineering and Computer Sciences

No abstract provided.

An Analysis Of Internal Phosphorus Loading In White Lake, Alan Steinman, Mary Ogdahl

Scientific Technical Reports

An analysis of internal phosphorus loading in White Lake, MI was conducted during the summer, 2006. Sediment cores were removed from 4 sites in White Lake and incubated in the laboratory under aerobic (with oxygen) and anaerobic (without oxygen) conditions. Phosphorus flux from the sediments into the overlaying water column was measured over a 27-day period and compared to rates measured from sediment cores collected previously from Mona and Spring Lakes.

Internal phosphorus loading in White Lake sediments ranged from 1.55 to 7.78 mg TP/m2/d in anaerobic conditions and from -0.18 to 0.14 mg/m2/d in aerobic conditions. The negative value …

Water Resources Year In Review - Winter 2006, Vol. 19, No. 2, Annis Water Resource Institute

AWRI Reviews

No abstract provided.

Potential Predators Of An Invasive Frog (Eleutherodactylus Coqui) In Hawaiian Forests, Karen H. Beard, William C. Pitt

Wildland Resources Faculty Publications

In Hawaii, where there are no native reptiles or amphibians, 27 species of reptiles and amphibians have established; however, few have been studied to determine their ecological impacts. For example, little is known about the impacts of the Puerto Rican frog, Eleutherodactylus coqui Thomas, that recently invaded (late 1980s), and has established on all four main Hawaiian Islands. However, there are likely to be consequences because E. coqui can attain high densities (20570 frogs ha⁻¹ on average in Puerto Rico) and consume large quantities of invertebrates (114000 prey items ha⁻¹ per night on average in Puerto Rico).

Designing Information Systems Doctoral Programs: Issues And Challenges, Omar F. El-Gayar

Research & Publications

Doctoral programs aim at preparing students for stewardship in their discipline with particular emphasis on training for research. While doctoral programs have been conventionally offered by research institutions, market demands, changing needs, and other factors are driving traditionally teaching institutions to explore opportunities for implementing information systems (IS) doctoral programs. In this paper we present some of the issues and challenges involved in designing and implementing IS doctoral programs. The emphasis is on traditionally teaching institutions. The paper concludes with a set of recommendations and directions for future research on doctoral programs in information systems.

Environmental Management Information Systems (Emis) For Sustainable Development: A Conceptual Overview, Omar F. El-Gayar, Brian D. Fritz

Research & Publications

Environmental management information systems (EMIS) is defined as 'organizational-technical systems for systematically obtaining, processing, and making available relevant environmental information available in companies'. Such systems evolved out of a growing need to manage environmental information in response to internal and external pressures such as regulations, consumers, stockholders, and changes in the business environments. While over the past decade EMIS have proliferated in the corporate landscape, these systems have received little attention within the information systems research community as whole. The objective of this paper is to serve as a tutorial providing a conceptual overview of EMIS, highlighting organizational and technical …

Syntactic Processing In Individuals With Dyslexia: Using Erp To Address The Debate, Hilary Brown

Theses and Dissertations (Comprehensive)

Behavioural and ERP data were collected from university and college students with and without dyslexia to determine if a deficit in syntactic processing in post-secondary students with dyslexia can be explained by the degree of phonological processing deficits. Participants read and listened to sentences of differing syntactic complexity and working memory load, particularly object relative and subject relative sentences. Slow cortical waves showed greater negativity for the objective relative sentences as the sentence progressed for the control participants regardless of presentation format. The same result was seen for the participants with dyslexia when presented with sentences in an auditory format. …

Exploring The Possibilities Of Using Lisanga Small Groups In Disciple-Making Among The Avalogoli People Of Kenya, Nebert A. Mtange

ATS Dissertations

No abstract provided.

Exploring The Possibilities Of Using Lisanga Small Groups In Disciple-Making Among The Avalogoli People Of Kenya, Nebert A. Mtange

ATS Dissertations

No abstract provided.

Constitutional Jurisprudence Of Sandra Day O'Connor: A Refusal To "Foreclose The Unanticipated", Wilson R. Huhn

Akron Law Faculty Publications

Earlier this year, Justice Sandra Day O’Connor retired from the Supreme Court of the United States after 25 years of service. It would be difficult to overstate the impact that Justice O’Connor has had on the interpretation of the Constitution during her tenure on the Court. Her importance to the development of American constitutional law stems from her central position on the Supreme Court. Professor Erwin Chemerinsky has described her role in these terms:

O’Connor is in control. In virtually every area of constitutional law, her key fifth vote determines what will be the majority’s position and what will be …

Micronektonic Community Composition And Trophic Structure Within The Bathypelagic Zone In The Eastern Gulf Of Mexico, Scott E. Burghart

USF Tampa Graduate Theses and Dissertations

The Earth's most extensive living space is found in the bathypelagic zone of the oceans, yet research in these areas is scant. The micronekton of the bathypelagic zone in the eastern Gulf of Mexico (EGOM) was investigated with the goals of comparing its community structure and trophic interactions with those of the well-studied overlying mesopelagic micronekton. Significant changes in faunal structure were found, including shifts in dominant families as well as species. Compared to the mesopelagic zone, the bathypelagic community had increased abundance and biomass contributions from the Gonostomatidae, Oplophoridae,and Eucopiidae, with a simultaneous decrease in the importance of the …

The Hearing Abilities Of Elasmobranch Fishes, Brandon M. Casper

USF Tampa Graduate Theses and Dissertations

The hearing abilities of elasmobranch fishes were examined in response to several types of stimuli using auditory evoked potentials (AEP). Audiograms were acquired for the nurse shark, Ginglymostoma cirratum, the yellow stingray, Urobatis jamaicensis, in a controlled environment using a monopole underwater speaker. A dipole stimulus was used to measure the hearing thresholds of the horn shark, Heterodontus francisi, and the white-spotted bamboo shark, Chiloscyllium plagiosum. The dipole experiments yielded much lower thresholds than any other experiment, suggesting that this type of sound specifically stimulated the macula neglecta by creating a strong velocity flow above the head of the shark. …