Digital Commons Network^™

Bioavailability And Biodegradability Of Dissolved Organic Nitrogen Originated From Municipal And Animal Wastewater, Jingyi Sun

Agribusiness and Biosystems Engineering

Due to the increased concern on dissolved organic nitrogen (DON) in surface waters, it is necessary to understand the biodegradability and bioavailability of DON in point and non-point sources. In this study, algae and bacteria were applied under lab condition to undestand the impact of DON to water environment. Biodegradable DON (BDON) was determined using bacteria while bioavailable DON (ABDON) was determined using green algae Selenastrum capricornutum, Chlamydomonas reinhardtii, and Chlorella vulgaris and/or mixed culture bacteria in municipal and animal wastewaters. In both wastewater sources, ABDON efficiencies (%) for all three algae were not significantly different indicating that Chlamydomonas reinhardtii …

Effects Of Corn Condensed Distillers Solubles Supplementation On Intake, Performance, Rate And Site Of Digestion, And Ruminal Fermentation In Cattle Consuming Forage-Based Diets, Lindsey Rebecca Coupe

Animal Sciences

Two studies were conducted to determine effect of feeding method and level of corn condensed distillers solubles supplementation on performance of beef cows fed forage-based diets and effects on digestibility and ruminal fermentation. Experiment 1 utilized 80 gestating crossbred cows in a randomized complete block design. Treatments were arranged in a 2 × 2 + 1 factorial design; main effects were feeding method (mixed vs. fed separately) and level of CCDS. All treatments were offered ad libitum forage. Experiment 2, utilized 5 ruminally and duodenally cannulated Holstein steers in a 5×5 Latin square to evaluate effects of CCDS supplementation on …

Factors Influencing The Passive, Innate, And Adaptive Immune System And Their Effects In Beef Cattle, James Joseph Gaspers

Animal Sciences

To investigate the factors influencing the passive, innate, and adaptive immune system and their effects in beef cattle, three experiments (exp.) were completed. Results from Exp. 1 indicate that there is some influence of birth weight and incidence of dystocia on the passive transfer of immunity from dam to offspring. Results from Exp. 2 indicated that supplemented dams had lower calving ease scores and tended to have greater colostrum production while their calves showed less evidence of mixed acidosis based on blood parameters of pCO2, lactate, and base excess. In Exp. 3, vaccine treatments initiated an inflammatory response with subcutaneous …

Cully Park Remediating The Willamette Waterfront Of Portland, Kelsey Windrum

Landscape Architecture Theses

This thesis is a remediation greenway project with an emphasis on waterfront revitalization and phytoremediation. Researched greenways focus on the conservation, recreation, and non-motorized transportation of a maintained corridor of protected open space, however, very little research focuses on the incorporation of phytoremediation into these protected greenways. This thesis’s research explores the relationship between phytoremediation and a waterfront park through studied principles comprising of: ecological movement, remediation educational practices,and transportation and circulation connections. These aspects are implemented through the design of a multi-level park, linking the Willamette River in the South Waterfront District of Portland to existing trail systems and …

Toward A Synthesis Of Hr Competency Models: The Common Hr "Food Groups", Dave Ulrich, Wayne Brockbank, Mike Ulrich, David Kryscynski

Faculty Publications

As businesses face unprecedented rates of volatility, uncertainty, complexity, and ambiguity (VUCA), business leaders increasingly recognize the importance of talent (workforce, competencies, skills, abilities), leadership (senior leader and leadership team), and organization (workplace, capability, culture, processes, systems) as sources of competitiveness. Competitors can readily copy access to capital, strategic intent, and operational efficiency but they have a more difficult time copying talent, leadership, and organizational practices. As a result of this increased visibility, HR issues have received increased attention in the C-suite.

How Can Sustainable Design Insure Resiliency Through The Biodiversity Of A Boomtown, Jesse M. Riley

Natural Resources Management

Presently the state of North Dakota is enjoying tremendous economic expansion as well as an increase in population. The development of the Bakken Oil formation has introduced a new set of opportunities and presented a new set of challenges. By studying past boomtowns, ecology, and design, a path for planning, recruitment and maintaining communities with a sustainable approach can be explored. The purpose of this research is to guide current and future stakeholders in the area of energy development communities and wise growth planning. The many articles and books that are devoted to social science, ecology, design and population recruitment …

Synthesis, Characterization, And Modeling Of New Molecule-Based Magnets, Christopher Samuel Olson

Materials and Nanotechnology

The chemical bond and its role as a mediator of magnetic exchange interaction remains an important aspect in the study of magnetic insulators and semiconductors. The M[TCNE] (M = transition metal, TCNE = tetracyanoethylene) class of organic-based magnets has attracted considerable interest since VII[TCNE]x (x ~ 2) exhibits one of the highest critical temperatures for its class – Tc ~ 400 K – in addition to highly spin-polarized conduction and valance bands (Eg ~ 0.5 eV), thus foreseeing potential spintronic application. The magneto-structural factors underlying this exceptional behavior remain elusive, however, due to the amorphous nature of the material. To …

The Free And Restricted Diffusion Of Silicon Nanocrystal Clusters, Ahmed Bahgat Elbaradei

Materials and Nanotechnology

Biological applications for silicon nanocrystals (SiNCs) have recently gained more attention because of silicon’s low toxicity. But, to be able to use SiNCs in applications such as biological sensors, labeling or drug delivery we need to understand their transport in different environments and their interaction with cell membrane. I will review some different methods for the synthesis of, and I will give an accounting of encapsulating SiNCs with PEGylated phospholipids to make them soluble in water. I also studied the free diffusion of these micelles in water, as well as their restricted diffusion and interaction with giant unilamellar vesicles (GUVs). …

Rigidly Foldable Origami Twists, Thomas A. Evans, Robert J. Lang, Spencer P. Magleby, Larry L. Howell

Faculty Publications

Rigid foldability is an important characteristic of origami structures that becomes significant with non-paper materials. A rigidly foldable origami tessellation is one where the sectors remain rigid and all deflection occurs at the crease lines. Many rigidly foldable patterns have only one degree of freedom, making them potentially useful for deployable structures. Methods have been developed to construct rigidly foldable origami tessellations using materials with finite thickness based on zero-thickness rigidly foldable patterns. [Tachi 11].

Origami methods have been considered for application in deployable structures such as solar panels [Miura 85] [Zirbel et al. 13] and sterile shrouds [Francis et …

The Application And Accuracy Of Structure From Motion Computer Vision Models With Full-Scale Geotechnical Field Tests, L. Palmer, Kevin W. Franke, R. Abraham Martin, B. E. Sines, Kyle M. Rollins, John Hedengren

Faculty Publications

Structure from motion (SfM) computer vision is a relatively new technology that allows engineers to reconstruct a three-dimensional (3D) model of a given scene using twodimensional digital photographs captured from a single, moving camera. SfM computer vision provides an economic and user-friendly alternative to other 3D scene-capture and modeling tools such as light distance and ranging (LiDAR). Although the resolution and accuracy of laser-based modeling methods are generally superior to vision-based modeling methods, the economic advantages associated with the latter may make it a useful and practical alternative for many geotechnical engineering applications. Although other engineering disciplines have investigated the …

Electrowetting Force And Velocity Dependence On Fluid Surface Energy, Qi Ni, Daniel E. Capecci, Nathan B. Crane

Faculty Publications

Electrowetting on Dielectric is a phenomenon in which the shape and apparent contact angle of a droplet changes when an electric field is applied across the droplet interface. If the field is asymmetric with respect to the droplet, then a net force can be applied to the droplet. In this work, we have measured the electrowetting force by confining the droplet shape beneath a glass plate and measuring the force on the plate. The force was measured as a function of voltage for a range of fluids with different surface energy. Measured forces show excellent agreement with predictions based on …

Caregiver Stress : First Person Accounts Of The Perception And Utilization Of Support Services, Debra Ann Shapiro

Human Development and Family Science

The majority of care for older adults is provided in the home. Many studies show that the daily demands placed on informal care providers produce high degrees of strain and stress. In an effort to reduce the over-arching impact care provider burnout can have on the entire family system, a number of community organizations offer resources to informal caregivers in the form of support groups, respite care and skills-training. More research is needed regarding the extent to which informal caregivers utilize these services. The objective of this paper is to assimilate more information about how care providers learn about available …

Red River Civic Plaza : An Urban Park Destination For Fargo-Moorhead Community, Joseph Starbuck

Landscape Architecture Theses

The City of Fargo, North Dakota, is funding the construction of a new City Hall to replace their current 1960s structure. This proposed development provides the largest city in North Dakota with a tremendous opportunity to design an iconic open space between their Civic Center, Public Library, and their proposed City Hall. This research focuses on the integration of low impact development into the Red River Civic Plaza to manage stormwater by utilizing bioretention, green roofs, porous pavements, and rainwater harvesting to reduce the demand for the current engineered water conveyance systems consisting of gutters, storm sewers, culverts, and detention …

Molecular Mapping Of Fusarium Head Blight Resistance In Two Adapted Spring Wheat Cultivars, Ahmed Elfatih Amin Eldoliefy

Plant Sciences

Releasing bread wheat (Triticum aestivum) cultivars with resistance to Fusarium head blight (FHB) disease can be endangered by narrowing the variation in genetic sources. However, resistance to FHB rely on five different types. FHB resistance types I, II, III, IV and V were assessed in field and greenhouse under multiple locations and years experiment’s combination. In our study, the genetic of FHB resistance in two widely cultivated hard red spring wheat varieties (‘Glenn’ and ‘Parshall’) were dissected. The specific objectives of the study were to generate recombinant inbred lines (RIL) populations, phenotypic assessment for FHB resistance, different informative genotypic marker …

Manufacturing Optimization Of Non-Traditional Pasta Products, Elena De La Peña

Plant Sciences

A study was conducted to determine the effect of including non-traditional ingredients on the flow and agglomeration properties of flour formulations, the rheological behavior of pasta dough, and the physical and cooked quality of the spaghetti. The effect of including non-traditional ingredients on the chemical changes that occurred in pasta during pasta making and cooking was also investigated. The formulations used were semolina 100% (S), whole wheat flour 100% (WW), semolina-whole wheat flour (49:51) (SWW), semolina-flaxseed flour (90:10), whole wheat flour-flaxseed flour (90:10), and semolina-whole wheat flour-flaxseed flour (39:51:10). Flaxseed flour was incorporated as fine (FF) or coarse (CF) particles. …

Modeling Light Gas And Tar Yields From Pyrolysis Of Green River Oil Shale Demineralized Kerogen Using The Chemical Percolation Devolatilization Model, Daniel Barfuss, Ronald J. Pugmire, Thomas H. Fletcher

Faculty Publications

Recent detailed chemical structure analyses of three demineralized kerogens from Green River oil shale samples were used to generate input parameters for the chemical percolation devolatilization (CPD) model. This model uses a lattice network to describe pyrolysis of solid hydrocarbons, such as coal and biomass. It was necessary to modify the formulation of the CPD model to account for the long aliphatic carbon chains found in oil shale, because gases formed from these long chains condense at room temperature and are counted as tar. It was initially assumed that 20% of the aliphatic material was released as light gas during …

Model For The Evolution Of Pore Structure In A Lignite Particle During Pyrolysis, Sufen Li, He Yang, Thomas H. Fletcher, Ming Dong

Faculty Publications

In this paper, on the basis of the chemical percolation devolatilization (CPD) model and using the coal polymer network parameters to calculate the surface area and porosity of the particle, a model for the evolution of pore structure in a lignite particle during pyrolysis is established. The model connects the polymer network structure and the pore structure, and it may extend the application range of network statistical devolatilization models. Model predictions agree with experimentally observed trends reported in the literature for porosity and internal surface area with increasing mass release. Particle porosity increases during pyrolysis because of mass release and …

Simulation Of The Swelling Of High-Volatile Bituminous Coal During Pyrolysis. Part 2: Influence Of The Maximum Particle Temperature, He Yang, Thomas H. Fletcher, Ming Dong

Faculty Publications

A model was established previously to predict the swelling ratio of high-volatile bituminous coal during pyrolysis based on the assumption that the structure of bubble distribution in the particle at the beginning of the plastic stage is a central bubble surrounded by many surrounding bubbles. The initial number and size of the bubbles when the particles become plastic are calculated by the pressure in the particle, and the chemical percolation devolatilization (CPD) model is used to describe pyrolysis. In this paper, to obtain accurate results at low pyrolysis temperatures, the previous model is improved and the following parts in the …

Drug Treatment Comparison For Total Knee Replacement Surgery, Kevin Jeffrey Soderholm

Statistics

In this study, we aim to better understand how spinal block, anticoagulant, and antifibrinolytic drug treatments are associated with hospital costs, lengths of stay, prevalence of early readmissions, and prevalence of blood transfusions for total knee replacement patients. Analysis of variance, multiple comparison testing, ordinary least squares regression, and logistic regression were used to identify which combinations of these drug treatments were associated with higher or lower health outcomes. The combination of Lidocaine and Ropivacaine was the spinal block treatment associated with the highest mean hospital cost, length of stay, highest proportion of early readmissions, and required blood transfusions. The …

The Comovement Of Investor Attention, Michael S. Drake, Darren T. Roulstone, Jared Jennings, Jacob Thornock

Faculty Publications

Prior literature has documented that investor attention and constraints on that attention are associated with the pricing of stocks. We introduce the concept of attention comovement, which is the extent to which investor attention for a firm is explained by attention paid to the firm’s industry and the market in general. We find that attention comovement is non-trivial for the average firm and is related to firm characteristics, such as size and visibility. We also find that the comovement of investor attention has market consequences, in that it is positively associated with excess stock return comovement. Finally, we show that …

Development And Validation Of A New Blade Element Momentum Skewed-Wake Model Within Aerodyn, Andrew Ning, Greg Hayman, Rick Damiani, Jason Jonkman

Faculty Publications

Blade element momentum methods, though conceptually simple, are highly useful for analyzing wind turbines aerodynamics and are widely used in many design and analysis applications. A new version of AeroDyn is being developed to take advantage of new robust solution methodologies, conform to a new modularization framework for National Renewable Energy Laboratory’s FAST, utilize advanced skewed-wake analysis methods, fix limitations with previous implementations, and to enable modeling of highly flexible and nonstraight blades. This paper reviews blade element momentum theory and several of the options available for analyzing skewed inflow. AeroDyn implementation details are described for the benefit of users …

On Learning Time Delays Between The Spikes From Different Input Neurons In A Biophysical Model Of A Pyramidal Neuron, Achilleas Koutsou, Guido Bugmann, Chris Christodoulou

School of Engineering, Computing and Mathematics

No abstract provided.

Tsallis Entropy As A Biomarker For Detection Of Alzheimer's Disease, Ali H. Al-Nuaimi, Emmanuel Jammeh, Lingfen Sun, Emmanuel Ifeachor

School of Engineering, Computing and Mathematics

No abstract provided.

Individualized Cardiac Resynchronization Therapy: Next Generation Pacemaker Controls, Peter Jacob Hettwer

Electrical and Computer Engineering

Cardiac dyssynchrony (CD) causes some heart muscle regions to contract at different times, and current treatments do not help 30 – 50% of patients. In this thesis, multi-site pacing control schemes are created to quantitatively and automatically reduce the CD of ventricular wall accelerations by adjusting pacing times. Two and four left ventricular region models are investigated containing model variables that represent numerous muscle parameters. Optimization is performed using exhaustive search and genetic algorithm techniques, with particular attention paid to the latter with regard to development, parameter selection, and limitations. Relative to treatments firing all regions simultaneously, timing adjustment improves …

Ocean Acidification Through The Lens Of Ecological Theory, Brian Gaylord, Kristy J. Kroeker, Jennifer M. Sunday, Kathryn M. Anderson, James P. Barry, Norah E. Brown, Sean D. Connell, Sam Dupont, Katharina E. Fabricius, Jason M. Hall-Spencer, Terrie Klinger, Marco Milazzo, Philip L. Munday, Bayden D. Russell, Eric Sanford, Sebastian J. Schreiber, Vengatesen Thiyagarajan, Megan L.H. Vaughan, Steven Widdicombe, Christopher D.G. Harley

School of Biological and Marine Sciences

No abstract provided.

The Capillary-Centric Model Of Coupling-As-Thermodynamics, Andrew James David Taylor

Electrical and Computer Engineering

Models of ventricular-arterial coupling (VAC) have historically described the heart as a function of its energetic interaction with the arterial system. However, these models either represent the dynamic, adaptive cardiovascular system (CVS) in isolation or sacrifice cardiac mechanics to use simplified, time-averaged values across the cardiac cycle. In this thesis a facsimile CVS is constructed that characterizes ventricular-arterial interactions with intact cardiac mechanics as a function of whole-body thermo-fluid homeostatic regulation. Simulation results indicate proportional-integral (PI) control of heart rate and arterial resistance is conditionally sufficient to maintain body temperature during square-wave exercise, but further elements may be required to …

Multi-User Indoor Ultra-Wideband Wireless Communication Using Polyphase Spreading Sequences, Ma Ambroze, Pa Martin, M Tomlinson, Dp Taylor

School of Engineering, Computing and Mathematics

No abstract provided.

The Effects Of Unequal Compressive/Tensile Moduli Of Composites, M. Meng, H. R. Le, M. J. Rizvi, S. M. Grove

School of Engineering, Computing and Mathematics

Abstract This paper investigates the effects of unequal compressive and tensile moduli of carbon fibre reinforced plastic (CFRP) composites. The basic assumption is based on the statistics that the compressive modulus is a fraction lower than the tensile modulus. Data evaluated by Finite Element Analysis (FEA) model, Classical Laminate Theory (CLT) model, and experiment are used to investigate these effects. The terms of compressive modulus are successfully introduced into the Tsai–Wu failure criterion for the production of failure envelops, into the Classical Beam Theory (CBT) and CLT for the investigation of flexural behaviour as well as the fibre microbuckling model …

Power System Stability Enhancement Through Data Center Ancillary Services, Muhammad Ali

Electrical and Computer Engineering

The primary objective of a control system is stability and steady-state performance under varying dynamics, such as faults and disturbances. The stable power system should continue to function properly in case of faults and disturbances. Stability of the power systems find applications in various domains, such as power delivery through Permanent Magnet Synchronous Generator (PMSG), Doubly-Fed Induction Generator (DFIG), and data centers. The goal of this dissertation is to design a robust control for a power system. We propose a hybrid Fault-Ride-Through (FRT) strategy for DFIG and two new PMSG grid-interfaced models, named PMSG Boost and PMSG Rectifier-Inverter. We analyze …

Calcification Is Not The Achilles' Heel Of Cold-Water Corals In An Acidifying Ocean., Riccardo Rodolfo-Metalpa, Paolo Montagna, Stefano Aliani, Mireno Borghini, Simonepietro Canese, Jason M. Hall-Spencer, Andy Foggo, Marco Milazzo, Marco Taviani, Fanny Houlbrèque

School of Biological and Marine Sciences

Ocean acidification is thought to be a major threat to coral reefs: laboratory evidence and CO2 seep research has shown adverse effects on many coral species, although a few are resilient. There are concerns that cold-water corals are even more vulnerable as they live in areas where aragonite saturation (Ωara ) is lower than in the tropics and is falling rapidly due to CO2 emissions. Here, we provide laboratory evidence that net (gross calcification minus dissolution) and gross calcification rates of three common cold-water corals, Caryophyllia smithii, Dendrophyllia cornigera, and Desmophyllum dianthus, are not affected by pCO2 levels expected for …