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Selection Of Benthic Habitat By Yellow-Phase American Eels (Anguilla Rostrata), Melissa A. Braham

Graduate Theses, Dissertations, and Problem Reports (ETD)

This thesis examines habitat preference of yellow-phase American eels (Anguilla rostrata) and relationships between age and length with that preference. The thesis is comprised of two chapters: (1) an introduction and literature review on American eel life history, their habitat selection, and the study of resource selection, and (2) an experimental study of yellow-phase American eel habitat preference and relationships between preference and age and length. Given widespread habitat alteration of North American rivers, an understanding of the use and selection of habitat is important to conservation and management of the American eel. Yellow-phase American eels are often considered as …

Dna-Based Population Estimation, Harvest Vulnerability, And Home Range Dynamics Of Black Bears In Western Maryland, Michael D. Jones

Graduate Theses, Dissertations, and Problem Reports (ETD)

After nearly being extirpated from the state, black bears in Maryland have rebounded to a point where recreational harvest has now become an important management tool. Having a better understanding of bear population parameters, movements, and harvest vulnerability allows managers to implement hunting more effectively and responsibly. To estimate demographics of the Maryland bear population, we implemented noninvasive genetic sampling of bear hair during summer 2011. We used a model-based sampling design that allowed us to collect samples more efficiently. We used presence-only maximum entropy (Maxent) modeling to classify the study area based on predicted probability of bear occurrence, and …

Study Of Chemical States, Composition And Adsorption Behavior Of Iron Coated Granular Activated Carbon (Fe-Gac) For Selenate Removal And Feasible Adsorbent Modifications, Ning Zhang

Graduate Theses, Dissertations, and Problem Reports (ETD)

This study examined the adsorptive removal of selenate using iron coated granular activated carbon (Fe-GAC) and further investigated its complexation mechanisms and coordination structures using spectroscopic techniques. Adsorption kinetics and equilibrium experiments with initial selenium concentration of 1 mg/L were conducted under three different ionic strengths to study selenate adsorption behavior. Selenate adsorption reached equilibrium within 48 hours with more than 85% of the equilibrium capacities being obtained within the first 6 hours. High removal efficiency (i.e., > 75%) was achieved for pH range 2 - 5. Pseudo-second-order kinetic model characterized selenate adsorption kinetics well (R2 = 0.999) and the rate …

Stability And Convergence For Nonlinear Partial Differential Equations, Oday Mohammed Waheeb

Boise State University Theses and Dissertations

If used cautiously, numerical methods can be powerful tools to produce solutions to partial differential equations with or without known analytic solutions. The resulting numerical solutions may, with luck, produce stable and accurate solutions to the problem in question, or may produce solutions with no resemblance to the problem in question at all. More such numerical computations give no hope of solving this troublesome feature and one needs to resort to investing time in a theoretical approach. This thesis is devoted not solely to computations, but also to a theoretical analysis of the numerical methods used to generate computationally the …

Assessing Eolian Dust Inputs To Soils In Dry Creek Experimental Watershed, Sw Idaho, Brian Jameson Stark

Boise State University Theses and Dissertations

A geochemical investigation of upland soils in the Dry Creek Experimental Watershed (DCEW) near Boise, Idaho was conducted to assess the potential contributions of eolian dust. Major and trace element compositions of soils within the watershed, loess deposits in the adjacent Western Snake River Plain (WSRP), and underlying granodiorite bedrock were evaluated. Multiple lines of evidence suggest a significant contribution of dust in the soils. Plots of Co/Ti, V/Ti and Cr/Ti indicate that the loess and bedrock occupy distinctly different compositional spaces and that the soils are of intermediate composition, suggesting that the soils are a mixture of the loess …

December 2012 News Releases, University Of Montana--Missoula. Office Of University Relations

University of Montana News Releases, 1928, 1956-present

No abstract provided.

Community Structure And Ecological Specialization In Plant-Ant Interactions, Paola Barriga

Graduate Theses and Dissertations

Positive associations among species have contributed to the maintenance of biodiversity. These interactions are typically studied in pairwise fashion where two interacting organisms are the focus. This dissertation uses network theory to analyze positive plant-ant associations in three Neotropical forests. Obligate plant-ant mutualisms were used, where plants host the ants in domatia and provide food bodies while the ants protect the plants and can feed them. A network approach was used to depict all obligate plant-ant interactions within a community. The main questions asked at the community level were: 1) Do network structure and levels of specialization change geographically and, …

Physical Demands Of Soccer: Lessons From Team Usa And Ghana Matches In The 2010 Fifa World Cup, Wycliffe W. Njororai Simiyu

Health & Kinesiology Faculty Publications and Presentations

Purpose: Distance covered and the intensity patterns of player movements using selected matches involving the national teams of United States of America and Ghana in the World Cup Soccer Tournament held in South Africa from June 11th to July 11th 2010. Methodology: A total of eight matches played by nine teams were used in the study. Team USA played against England, Slovenia, Algeria and Ghana. The national team of Ghana played against Germany, Australia, Serbia, USA and Uruguay. The eight matches comprised 12.5% of all matches played while the nine countries comprised 32% of all the tournament participating countries. Results: …

The International Atomic Energy Agency's Decision To Find Iran In Non-Compliance, 2002-2006, Nima Gerami, Pierre Goldschmidt

WMD Case Studies

On August 14, 2002, at a press conference in Washington, DC, the National Council of Resistance of Iran (NCRI), an exiled Iranian opposition group, drew worldwide attention when it publicly accused Iran of clandestinely developing nuclear weapons. Alireza Jafarzadeh, then-U.S. media spokesperson for the NCRI, described two “top secret” nuclear facilities being constructed in Iran at Natanz and Arak under the guise of front companies involved in the procurement of nuclear material and equipment. Noting that media attention had focused on Iran’s publicly declared civilian facilities, Jafarzadeh claimed that “in reality, there are many secret nuclear programs at work in …

Evaluation Of The Environmental Impacts Of Bridge Deck Runoff, Shannon L. Bartelt-Hunt, Lauren Swadener, Ekizabeth G. Jones

Nebraska Department of Transportation: Research Reports

Bridges are located in very close proximity to receiving waters, and regulatory agencies often require specific stormwater control measures for bridge deck runoff. While there is some information available on roadway runoff, few studies have focused on bridge deck runoff. Currently, there is no information available regarding the impacts of bridge deck runoff on receiving waters in Nebraska. Due to the cost, maintenance, and design issues associated with implementing structural controls for bridge deck runoff, it is important to develop a better understanding of the relationship between bridge deck runoff and potential impacts to receiving streams. The objectives of this …

Effects Of Felled Shortleaf Pine (Pinus Echinata Mill.) Moisture Loss On Oviposition Preferences And Survival Of Sirex Nigricornis F. (Hymenoptera: Siricidae), Jessica Hartshorn

Graduate Theses and Dissertations

The European woodwasp, Sirex noctilio F. (Hymenoptera: Siricidae) utilizes pine as its host during larval development. Females drill through pine bark to deposit eggs, a symbiotic fungus, Amylostereum, and phytotoxic mucus into the tree. In their native range, these insects are not viewed as primary pests because they attack dead or dying trees. Over the last century, this woodwasp has been accidentally introduced into several countries in the southern hemisphere. Some regions have incurred millions of dollars in damage to large plantations of the widely planted pine species, radiata pine (Pinus radiata D. Don). Sirex noctilio was discovered …

A Watershed Scale Evaluation Of Selected Second Generation Biofeedstocks On Water Quality, Gurdeep Singh

Graduate Theses and Dissertations

This study compares a novel simulation approach to the conventional Soil and Water Assessment Tool (SWAT) modeler's approach for targeting biofuel crop production on marginal lands. In conventional SWAT modeling approach, non-spatial definition of hydrological response units (HRUs) results in the simulation of biofuel crops on both marginal and non-marginal land. This study provides an alternative approach in which a marginal-land raster was integrated into the land use and land cover (LULC) raster in such a way that the land uses were divided into marginal and non-marginal components. This modified LULC was used for model setup which resulted in marginal …

Identifying And Characterizing Non-Coding Rnas In The Dinoflagellate Karenia Brevis, Helen Namataka

Master's Theses

When algal cells proliferate and accumulate in marine and fresh water systems, they form algal blo'oms. The majority of these blooms are beneficial, but a significant number are detrimental and are known as harmful algal blooms (HABs). A number of negative effects, including closing of recreational beaches and economic loss, are observed during HABs. Predictably, the longer a bloom persists, the greater its effects on human, environmental and economic health. Karenia brevis, a mixotrophic dinoflagellate, forms HABs, and blooms caused by this organism have been known to remain several months after formation. For these reasons, research has been conducted to …

Fungal Biofilm Colonization And Succession On Artificial Reefs In The North-Central Gulf Of Mexico, Amy Leigh Salamone

Master's Theses

This study represents the first characterization of natural mixed-species fungal biofilm communities on artificial reefs in the marine environment. Previous fungal biofilm studies have failed to observe the naturally-occurring biodiversity in coastal areas, which comprise the most utilized zone of the marine environment. Artificial reefs can increase fishing yields, amplify oyster habitats, contribute to shoreline stabilization, promote good water quality, and deter pollution. Proper management practices of artificial reefs require knowledge of the colonization of these new habitats by marine organisms and their subsequent succession. Fungi, along with bacteria, archaea, protists, algae, and diatoms, quickly form a complex biofilm on …

Vertical Violence And The Student Nurse: Is This Toxic For Professional Identity Development?, Sherri Williams Cantey

Dissertations

This narrative inquiry centers on student nurses’ stories of vertical violence perpetuated by clinical registered nursing staff and the meaning that students associate with this phenomenon. Student nurses are the very young and potentially impressionable members of our profession; therefore, a concern of this study was if vertical violence affects professional identity development for the student nurse. Additionally through stories revealed by these participants, this study attempted to explore whether perceptions of violence are believed to be a rite of passage into the profession. Students are the future of our profession, and it is important that this phenomenon be understood …

What Makes Finzi Finzi? The Convergence Of Style And Struggle In The Life Of Gerald Finzi And In His Set Before And After Summer, Op. 16, Trevor Dangerfield Smith

Dissertations

The purpose of this dissertation is two-fold: to discuss the nationalistic characteristics in Gerald Finzi’s life and in his mature compositional style, and to discuss both the beliefs he held and the struggles he faced during his life, and how these themes are integrated into his work for voice and piano Before and after Summer, op. 16.

Before and after Summer was not conceived as a cycle, but its songs are tied together by similar poetic themes and emotional impact, so despite the fact they were composed as individual entities they form a coherent collection from beginning to end. …

Computational Design Of The Electrical And Mechanical Performance Of Steerable Mems Antennas, Morgan Andrew Roddy

Graduate Theses and Dissertations

This thesis describes the origins, improvements, and variations of a broadband microwave antenna that can be beam-steered by a micro-electromechanical system (MEMS). The steerable MEMS antenna of this work was comprised of a planar antenna on top of a Silicon membrane. The membrane is etched to create a gimbal hinge structure and a platform which supported the antenna and gave it one or two degrees of freedom of rotation. The antennas presented were broadband and fed by a coplanar waveguide (CPW) transmission line which traversed the hinge structure. The antenna's orientation in space was designed to be changed through electrostatic …

Fate And Reactivity Of Natural And Manufactured Nanoparticles In Soil/Water Environments, Allison Vandevoort

All Dissertations

Nanoparticles (NPs), < 100 nm in diameter, make up the smallest component of solid material. This small size often causes increased reactivity in soil/water environments, which is true for both natural NPs, such as very fine clay particles, and for manufactured nanoparticles, such as silver nanoparticles (AgNPs). As the importance of these particles is more widely recognized, and as manufactured nanoparticles, especially AgNPs, are increasing in production, it is essential to consider their effect on terrestrial and aquatic environments. The studies presented in this dissertation show that both the physicochemical characteristics of the NPs (e.g., particle size, surface coating, elemental composition), as well as soil-water interfacial chemistry (e.g., ionic strength, ligand concentration, pH), are instrumental in predicting environmental fate and reactivity.
Ligand type and concentration were especially important in NP reactivity and bioavailability. Using the hard/soft acid/base concept, the effect of phosphate ligand (hard base) on Fe/Al (hard acid) oxyhydroxide natural NPs was investigated in Chapters 2 and 3. Adding phosphate to soil NPs and reference nano-minerals (Fe-(oxyhydr)oxides and kaolinite) caused coagulation or dispersion, changing the particle size of the NPs, as well as affecting the amount of phosphate in its bioavailable (i.e., dissolved) form. A review of the literature in Chapters 1 and 3 revealed that changes in the soil conditions, and therefore, soil colloids/NPs (e.g., increasing organic …

Spatial And Temporal Variability Of Particulate And Chromophoric Dissolved Organic Matter Absorption In The Northern Gulf Of Mexico, Ashley Ann Lojek

Master's Theses

Coastal regions influenced by large freshwater inputs exhibit large variability in absorption and associated optical properties. Therefore, understanding coastal ecosystem processes requires intensive, ongoing sampling. Analysis of the Mississippi and Atchafalaya River plumes took place on board the RIV Pelican on two separate cruises. MagMix-1 occurred from May 1 to May 8, 2008 and corresponded to the highest discharge periods for both rivers for 2008; MagMix-11 took place October 31 to November 6, 2008 and corresponded to the lowest discharge periods for both rivers for 2008. Samples were collected along four transects in the northern Gulf of Mexico and were …

Carbon And Nitrogen Dynamics In High Intensity Minimal Exchange Shrimp (Litopenaeus Vannamei) Raceways, John Henry Francis

Master's Theses

Three separate shrimp (litopenaeus vannamei) growouts were examined at The University of Southern Mississippi's Thad Cochran Marine Aquaculture Center. The objectives of this project were to (1) determine if there was a significant difference in any water quality parameters between the 2 density treatments, (2) construct carbon and nitrogen budgets to see where the carbon and nitrogen went in the system for all growouts, (3) determine if plastic media had any effects on water quality parameters and shrimp production, (4) determine if plastic media allowed for a nitrifying bacteria population to establish more rapidly, (5) determine if the …

Controlling Nanoparticle Dispersion For Nanoscopic Self-Assembly, Nathan S. Starkweather

Master's Theses

Nanotechnology is the manipulation of matter and devices on the nanometer scale. Below the critical dimension length of 100nm, materials begin to display vastly different properties than their macro- or micro- scale counterparts. The exotic properties of nanomaterials may trigger the start of a new technological revolution, similar to the electronics revolution of the late 20^th century. Current applications of nanotechnology primarily make use of nanoparticles in bulk, often being made into composites or mixtures. While these materials have fantastic properties, organization of nano and microstructures of nanoparticles may allow the development of novel devices with many unique properties. …

Effects Of Silvicultural Management On Coast Redwood Forest Composition, Density And Structure In Santa Cruz And San Mateo Counties, Michael J. Papa

Master's Theses

The multiple-objective exploratory study investigates effects of various silvicultural management regimes commonly applied to coast redwood (Sequoia sempervirens [D. Don] Endl.) forests in Santa Cruz and San Mateo Counties, California, USA. A temporary forest inventory was installed in 24 harvest origin stands and 4 natural origin stands throughout the study area (sample area = 1189 acres). Data from the systematic sample of 233 one-quarter acre nested cluster plots (sample intensity = 4.9%) rendered overall forest descriptions in terms of species composition, density, and structure. The common forestry measures of trees per acre (TPA), basal area per acre (BA), and …

Bacteriophage Ecology In A Commercial Cucumber Fermentation, Jean Lu, Ilenys M. Perez-Diaz, Janet S. Hayes, Fred Bredit Jr.

Faculty Articles

To reduce high-salt waste from cucumber fermentations, low-salt fermentations are under development. These fermentations may require the use of starter cultures to ensure normal fermentations. Because potential phage infection can cause starter culture failure, it is important to understand phage ecology in the fermentations. This study investigated the phage ecology in a commercial cucumber fermentation. Brine samples taken from a fermentation tank over a 90-day period were plated onto deMan-Rogosa-Sharpe agar plates. A total of 576 lactic acid bacterial isolates were randomly selected to serve as potential hosts for phage isolation. Filtered brine served as a phage source. Fifty-seven independent …

An Overview Of The Schwartz Theory Of Basic Values, Shalom H. Schwartz

Online Readings in Psychology and Culture

This article presents an overview of the Schwartz theory of basic human values. It discusses the nature of values and spells out the features that are common to all values and what distinguishes one value from another. The theory identifies ten basic personal values that are recognized across cultures and explains where they come from. At the heart of the theory is the idea that values form a circular structure that reflects the motivations each value expresses. This circular structure, that captures the conflicts and compatibility among the ten values is apparently culturally universal. The article elucidates the psychological principles …

Spatial And Temporal Trends Of Freshwater Mussel Assemblages In The Meramec River Basin, Missouri, Usa, J. E. Hinck, Stephen E. Mcmurray, Andrew D. Roberts, M. Christopher Barnhart, Christopher G. Ingersoll, Ning Wang, Tom Augspurger

College of Natural and Applied Sciences

The Meramec River basin in east-central Missouri has one of the most diverse unionoid mussel faunas in the central United States with .40 species identified. Data were analyzed from historical surveys to test whether diversity and abundance of mussels in the Meramec River basin (Big, Bourbeuse, and Meramec rivers, representing .400 river miles) decreased between 1978 and 1997. We found that over 20 y, species richness and diversity decreased significantly in the Bourbeuse and Meramec rivers but not in the Big River. Most species were found at fewer sites and in lower numbers in 1997 than in 1978. Federally endangered …

Effect Of Msa On Antibiotic Resistance And Allelic Replacement Of Pkor1 In Staphylococcus Aureus, Jordan M. Towne

Honors Theses

Staphylococcus aureus is an important human pathogen that causes hospital and community-acquired infections (52). These infections are difficult to treat due to resistance to a wide range of antibiotics and spread of antibiotic-resistant strains (13, 52). S. aureus causes infection by regulation of accessory genes encoding for expression of factors contributing to virulence (9, 11, 12, 29, 34, 43, 45), including severe infection, biofilm formation, autolysis, and antibiotic resistance (4, 5, 7, 27, 56). Actually, extracellular DNA and nutrient release during autolysis has been shown to contribute to the ability of bacteria to form and maintain a biofilm as well …

Food And Agricultural Security Strategy And Its Implementation Under Public Health Security And Bioterrorism Preparedness And Response Act Of 2002, Vivek V. Nemane

Journal of Food Law & Policy

The U.S. agricultural system can be described as concentrated, specialized and industrialized. A typical food chain generally involves agricultural production, storage, processing and distribution. In the U.S. agricultural and food system, most production, distribution and processing is done in a consolidated and centralized manner.

Food Sovereignty In The United States: Supporting Local And Regional Food Systems, Allison Condra

Journal of Food Law & Policy

Today, perhaps more than ever, an increasing portion of U.S. society is paying attention to and asking questions about our food and agricultural system. We are recognizing the immense consequences of the agricultural "efficiencies" we valued and wrote into our policies in the seventies-for example, growing corn "fence row to fence row" and the ease of microwaved meals and prepackaged foods. 3 The increasingly global nature of our food system and its consequences are becoming more apparent. Food safety concerns-prompted by a growing number of foodborne illness outbreaks and the government's response in the 2009 Food Safety Modernization Act-loom large …

Connecting Children To Nature: A Multiple Case Study Of Nature Center Preschools, Patti Ensel Bailie

Department of Teaching, Learning, and Teacher Education: Theses and Other Student Research

Environmental degradation, childhood obesity, and aggression of youth are societal problems that appear unconnected. However, their cause (and possible solution) may be linked to a common experience – the amount and quality of time spent in the natural world. Environment based education, significant life experience research, and studies involving urban youth and green spaces have shown that children’s experiences in the natural world have a positive effect on their attitudes, behaviors, and environmental awareness. Nature center based preschools are one approach for connecting children and nature, but little is known about the quality and consistency of their practices. This study …

Development A 3-D Mathematical Model For Network Topology Based On Graph Theory, Laith Jasim

Iraqi Journal of Computers, Communications, Control and Systems Engineering

Communication network efficiency depends upon many factors among which is the “Topology” which makes topology optimization an important Issue to care for. One important thing in optimization problems is the formulation of objective functions. For the case of topology design it is not a straightforward matter to develop an efficient topology model as well as objective functions to be used in the optimization process. An effective unconventional approach is needed. This paper is concerned with enhancing the already existing set of formulas, relating topology and topology properties modeling and topology design objectives, by proposing a 3-dimension way of modeling that …