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2020

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A Natural Antimicrobial From Bacillus Subtilis As A Biosanitizer For Resilient Membrane Biofilms, Pratishtha Verma Jan 2020

A Natural Antimicrobial From Bacillus Subtilis As A Biosanitizer For Resilient Membrane Biofilms, Pratishtha Verma

Electronic Theses and Dissertations

The microbial attachment and colonization on separation membranes lead to biofilm formation. Some selective isolates within the biofilm constitutive microflora acquire resistance and emerge predominant over prolonged use of the membrane. Thus, proving the cleaning and sanitization protocols to be ineffective in adequately removing resilient biofilms. This subsequently leads to selecting microbial resistance within the constitutive microflora to almost all antimicrobial treatments and hence, creates a need to develop novel alternative strategies to control biofilm formation on membrane surfaces. The first research project under this study was designed to understand the microbial interactions and emergence of predominance within biofilm constitutive …

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The Role And Molecular Mechanisms Of Wss1 In Preserving Genomic Stability, Daniel Kwesi Sam Jan 2020

The Role And Molecular Mechanisms Of Wss1 In Preserving Genomic Stability, Daniel Kwesi Sam

Electronic Theses and Dissertations

Cells are constantly under threat from both exogenous and endogenous sources of DNA damage. Eukaryotic organisms, however, possess conserved mechanisms that accurately and faithfully respond to DNA damage. The inability to effectively remove DNA lesions can lead to an accumulation of mutations which can compromise cellular viability. The DNA damage response is conserved from bacteria to eukaryotic organisms and have been well characterized, however, how covalently crosslinked proteins are removed from DNA remains enigmatic This thesis provides genetic and biochemical evidence implicating Wss1, a yeast metalloprotease in genome maintenance. We have identified SUMOylation to be an important signal that mediates …

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Understanding The Effect Of Single- And Twin-Screw Extrusion Processing Parameters On Physical And Physico-Chemical Properties Of Sprouted Quinoa And Sprouted Proso Millets, Gabriela John Swamy Jan 2020

Understanding The Effect Of Single- And Twin-Screw Extrusion Processing Parameters On Physical And Physico-Chemical Properties Of Sprouted Quinoa And Sprouted Proso Millets, Gabriela John Swamy

Electronic Theses and Dissertations

According to Mordor Intelligence Research, the new compositional research and moisture content extrusion process are helping the growth of the plant protein market. The demand for plant proteins is growing at a fast rate, owing to change in lifestyle, lack of balanced dietary intake, and improved research and development in order to develop new kinds of plant-protein enriched products. It is necessary to identify the right plant protein sources and choose the right processing methodology to create highly digestible foods which can be consumed by infants and elderly as well. In addition, it is important to support local farmers and …

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A Series-Elastic Robot For Back-Pain Rehabilitation, Elhussein Shata Jan 2020

A Series-Elastic Robot For Back-Pain Rehabilitation, Elhussein Shata

Electronic Theses and Dissertations

Robotics research has been broadly expanding into various fields during the past decades. It is widely spread and best known for solving many technical necessities in different fields. With the rise of the industrial revolution, it upgraded many factories to use industrial robots to prevent the human operator from dangerous and hazardous tasks. The rapid development of application fields and their complexity have inspired researchers in the robotics community to find innovative solutions to meet the new desired requirements of the field. Currently, the creation of new needs outside the traditional industrial robots are demanding robots to attend to the …

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Impact Of Postweaning Management Strategies On Beef Carcass Characteristics And Meat Quality, Christina Elaine Bakker Jan 2020

Impact Of Postweaning Management Strategies On Beef Carcass Characteristics And Meat Quality, Christina Elaine Bakker

Electronic Theses and Dissertations

The overall objective of this dissertation was to determine the impact of selected post weaning management strategies on beef carcass characteristics and meat quality. The specific objectives were 1) determine the effect of a rumen-protected long chain fatty acids fed during finishing on live performance, serum fatty acid profile, carcass traits, and predicted carcass composition, and 2) determine effects of feeding brassica-based cover crops to cattle during backgrounding on live animal performance, carcass characteristics, tenderness, juiciness, and flavor of strip steaks, and case life of ground beef and strip steaks. Results from both objectives indicate post weaning management strategies do …

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Cold-Water Prey Fish Monitoring And Ecology In Lake Oahe, Nicholas B. Kludt Jan 2020

Cold-Water Prey Fish Monitoring And Ecology In Lake Oahe, Nicholas B. Kludt

Electronic Theses and Dissertations

In Lake Oahe, a large mainstem Missouri river reservoir that spans 375 river kilometers in central North and South Dakota, naturalized Rainbow Smelt are the primary forage species for a regionally important Walleye Sander vitreus fishery. Walleye condition in Lake Oahe is highly correlated to Rainbow Smelt relative abundance through time, the latter species being typified by erratic abundance trends since accidental introduction in 1971. Cisco Coregonus artedii were introduced in the early 1990s to augment the cold-water prey base. We evaluated Lake Oahe cold-water prey base monitoring and dynamics through: 1.) a comparison of two hydroacoustic survey designs, 2.) …

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Reverse Genetic Analysis Of Ehd1 For An Association Between Flowering Time And Seed Dormancy In Rice (Oryza Sativa L.), Yeter Karakoc Jan 2020

Reverse Genetic Analysis Of Ehd1 For An Association Between Flowering Time And Seed Dormancy In Rice (Oryza Sativa L.), Yeter Karakoc

Electronic Theses and Dissertations

This research aimed to understand the evolutionary mechanism of seed dormancy and flowering time and to provide basic knowledge for the manipulation of germination features in crop breeding. Flowering time and seed dormancy are two adaptive traits for flowering plants. Seed dormancy (SD) helps regulate the timing of germination to promote the survival of seed-bearing plants in adverse environments. Cereal crops and weedy/wild relatives, such as Asian cultivated rice and weedy rice (Oryza sativa L.), have weak and strong seed dormancy, respectively. Thus, weedy and cultivated rice has been used as a model system to investigate mechanisms of seed dormancy …

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Understanding How Agricultural Intensification Impacts Ring-Necked Pheasant Distribution And Survival In Eastern South Dakota, Hilary R. Kauth Jan 2020

Understanding How Agricultural Intensification Impacts Ring-Necked Pheasant Distribution And Survival In Eastern South Dakota, Hilary R. Kauth

Electronic Theses and Dissertations

Historically, pheasants (Phasianus colchicus) have thrived in South Dakota in conjunction with successful land retirement programs or early farming practices through the 1950s, which created interspersions of agriculture and native landscapes that were ideal for pheasants. Recently, the Prairie Pothole ecosystem has undergone rapid agroeconomic expansion, effectively reducing ideal interspersions of native prairie and cropland into agriculturally homogeneous landscapes. Indices of pheasant abundance have suggested persistent population declines since 2008, raising concerns regarding landscape suitability. Our goal was to understand how agriculture intensification impacts pheasant ecology. The objectives were to: 1) estimate overwinter hen probability of survival, resource …

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Interaction Of Streptomyces Closely Associated With Bacillus In Nitrogen-Limiting Conditions, Aminya Baniya Jan 2020

Interaction Of Streptomyces Closely Associated With Bacillus In Nitrogen-Limiting Conditions, Aminya Baniya

Electronic Theses and Dissertations

Biological Nitrogen Fixation is the process of conversion of atmospheric dinitrogen into ammonia which is performed by symbiotic as well as free-living diazotrophic bacteria. A previous project to isolate free-living nitrogen fixing bacteria from a natural prairie yielded Streptomyces which grew on nitrogen free medium. Genome sequencing of three isolates revealed the presence of a second 16S rRNA gene sequence aligning with Bacillus, however repeated streaking only yielded Streptomyces colonies. The aim of this research was to characterize the interaction of three Streptomyces isolates that grow under nitrogen-free conditions, and appeared to be associated with Bacillus. The separation of Bacillus …

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Distribution, Density, Movement, And Support For Management Of Mountain Sucker, Pantosteus Jordani, In The Black Hills Of South Dakota, Seth J. Fopma Jan 2020

Distribution, Density, Movement, And Support For Management Of Mountain Sucker, Pantosteus Jordani, In The Black Hills Of South Dakota, Seth J. Fopma

Electronic Theses and Dissertations

Mountain Sucker, Pantosteus jordani, is a cold-water species native to the Intermountain West. Fringe populations of Mountain Sucker have experienced declines in recent decades. The population of Mountain Sucker found in the Black Hills of South Dakota represents the eastern fringe of the species’ native range. Recognized as both an indicator of biologic health and as a species of greatest conservation need in South Dakota, recent studies have suggested significant declines in both distribution and abundance. Despite the recent study of Mountain Sucker in the region, increased understanding of Mountain Sucker ecology is needed to effectively manage for the conservation …

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Understanding South Dakota Farmers’ Intentions To And Adoption Of Conservation Practices: An Examination Of The Theory Of Planned Behavior, Edem Avemegah Jan 2020

Understanding South Dakota Farmers’ Intentions To And Adoption Of Conservation Practices: An Examination Of The Theory Of Planned Behavior, Edem Avemegah

Electronic Theses and Dissertations

Conservation agriculture practice is a sustainable farming method based on three principle: crop diversification, minimal soil disturbance or movement and permanent or semi-permanent of soil cover. Government and stakeholders within the agricultural sector in the United States are promoting conservation farming practices but limited voluntary adoption still exists among producers at the farm level. This research study investigated the factors that influence the adoption of conservation practices among producers in the eastern and central parts of South Dakota (SD). A modified theory of planned behavior (TPB) is used as a framework alongside socioeconomic and demographic indicators to understand farmers’ current …

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Biodegradable Cellulose Films As Alternatives To Plastics, Cecilia Wambui Wanjuu Jan 2020

Biodegradable Cellulose Films As Alternatives To Plastics, Cecilia Wambui Wanjuu

Electronic Theses and Dissertations

Plastics are versatile and have desirable packaging characteristics such as flexibility, durability, and affordability. The production of plastics has increased over the years resulting in concerns about their single-usage and disposal. Since plastics are nonbiodegradable, they have been associated with detrimental health impacts due to the leaching chemicals from the landfills and their accumulation in the natural and marine environment. Cellulose obtained from agricultural residues is a viable substitute because of its low density, biocompatibility, biodegradability, low toxicity, and a strong and stiff structure. However, the extraction of cellulose has been less exploited because of its insolubility in water and …

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Biodegradable Biomaterials As Suitable Alternatives To Water Treatment Technologies, Most Farzana Yesmin Jan 2020

Biodegradable Biomaterials As Suitable Alternatives To Water Treatment Technologies, Most Farzana Yesmin

Electronic Theses and Dissertations

Nitrates and phosphates are essential nutrients for plants growth. Their excess presence in water, however, could cause eutrophication affecting the water quality and altering the aquatic ecosystem. Algal blooms and the presence of toxins such as microcystin in freshwater bodies are hazardous to humans, animals, and wildlife. Conventional technologies such as ion exchange, distillation, reverse osmosis, and bioreactors aid immensely to remove nutrients; however, they are expensive. Furthermore, building new nitrate and phosphate treatment units, maintenance and post-disposal are costly too. In this regard, there exists an unmet need for alternative processes that are renewable and cost-effective to treat contaminated …

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Development Of Methods To Improve Lactose Recovery From Permeate And Drying Characteristics Of Greek Acid Whey, Venkateswarlu Sunkesula Jan 2020

Development Of Methods To Improve Lactose Recovery From Permeate And Drying Characteristics Of Greek Acid Whey, Venkateswarlu Sunkesula

Electronic Theses and Dissertations

Growth of higher protein dairy products and ingredients such as cheese, Greek yogurt, whey protein concentrates, and milk protein concentrates is limited by the amount of co-product generated and the ability to process them into value added ingredients. Finding value for all the co-products will help dairy industry to meet the growing demand for dairy protein products and ingredients. Commercial scale evaluation of new technologies for improving lactose crystallization and drying ability of Greek yogurt acid whey will help dairy industry to better utilize different dairy co-products. Commercially, lactose is manufactured from concentrated permeate by cooling and separating α-lactose monohydrate …

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Functional Analysis Of Squamosa-Promoter Binding Protein Like 13 In Controlling Flowering Time, Plant Architecture, Grain Size, And Grain Number In Wheat, Ajay Gupta Jan 2020

Functional Analysis Of Squamosa-Promoter Binding Protein Like 13 In Controlling Flowering Time, Plant Architecture, Grain Size, And Grain Number In Wheat, Ajay Gupta

Electronic Theses and Dissertations

Higher and stable yield is always a major objective of wheat genetic improvement programs. The SQUAMOSA-promoter binding protein-like (SPL) genes constitute a small family of plant-specific transcription factors with diverse functions in plant development and growth and have great potential in improving yield and other major agronomic traits. However, the functional characterization of the SPL gene family in wheat is far behind other cereal crops such as rice. Using phylogenetic analysis, we identified 56 wheat orthologues of rice SPL genes belonging to 19 homoeologous groups. Among these 19 orthologous TaSPL genes, nine harbor the micro RNA 156 recognition element (MRE) …

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Determining The Effects Of Plant Extracts And Saltro Nematicide On Hatching, Mortality And Reproduction Of The Soybean Cyst Nematode (Heterodera Glycines), Bishnu Prasad Dhital Jan 2020

Determining The Effects Of Plant Extracts And Saltro Nematicide On Hatching, Mortality And Reproduction Of The Soybean Cyst Nematode (Heterodera Glycines), Bishnu Prasad Dhital

Electronic Theses and Dissertations

Soybean cyst nematode (SCN) is a microscopic worm that infects and feeds from the soybean roots, hence robbing the plant of nutrients, and entry wounds may facilitate other pathogens to infect the roots. Current SCN management practices include cultural, chemical, and biological methods. Cultural practices such as, crop rotation with non-host and different tillage practices are not efficient due to the persistent nature of SCN in the soil. Chemical nematicides, though effective, can be expensive, and some are not environmentally sound. SCN resistant soybean varieties are mainly derived from one source, PI 88788 and SCN population have already evolved to …

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Influence Of Mink Predation On Brown Trout Survival And Size-Structure In Rapid Creek, South Dakota, Austin Galinat Jan 2020

Influence Of Mink Predation On Brown Trout Survival And Size-Structure In Rapid Creek, South Dakota, Austin Galinat

Electronic Theses and Dissertations

I compared movement, home range, habitat selection, and mortality among radio-tagged Brown Trout (Salmo trutta) at an American Mink (Neovison vison)-removal site, improved habitat site, and an undisturbed stream site in Rapid Creek, South Dakota. I observed high, post-surgery (> 26 days) survival rate (90%) of radio tagged Brown Trout. Average gross movement of Brown Trout was greater at the improved habitat site (127 m) compared to the mink removal (31 m) site, while average home range size (i.e., stream distance) among all three sites was not significantly different indicating strong site fidelity (125 to 200 m). Brown Trout movements …

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Assembly Of Triticum Boeoticum Ssp. Aegilopoides And Triticum Monoccocum Genomes, Mustafa Aljadi Jan 2020

Assembly Of Triticum Boeoticum Ssp. Aegilopoides And Triticum Monoccocum Genomes, Mustafa Aljadi

Electronic Theses and Dissertations

Wheat is ancient cereal. Wheat has n = 7 chromosomes which is belong to genus Triticum. The group Triticum monococcum sp. aegilopoides(boeoticum) is a diploid wheat (2n = 14). It has a morphology aspect of having narrow, flat spike which usually shatters before harvesting time. The domesticated type of T.boeoticum known as a diploid wheat of Triticum monococcum L. In this research we want to generate a high quality assembly of wild and domesticated type of Einkorn wheat. Our method is using Illumina short sequence reads assembled by both CLC, and W2RAP(Wheat/Whole- genome Robust Assembly Pipeline) software’s. In our approach …

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Crop Rotations, Tillage And Cover Crops Influences On Soil Health, Greenhouse Gas Emissions And Farm Profitability, Jasdeep Singh Jan 2020

Crop Rotations, Tillage And Cover Crops Influences On Soil Health, Greenhouse Gas Emissions And Farm Profitability, Jasdeep Singh

Electronic Theses and Dissertations

This study assessed the effects of three levels of crop rotation: [2-yr; corn (Zea mays L.)- soybean (Glycine max L.), 3-yr; corn-soybean-oat (Avena sativa L.) or 4-yr; cornsoybean- oat-winter wheat (Triticum aestivum L.)], two tillage [conventional-till (CT) and no-till (NT)], and two winter cover cropping systems [cover crop (CC) or fallow control (NC)] on soil biochemical and physical properties, greenhouse gas emissions (GHG), microbial community composition, crop yield and farm profitability under silty clay loam soil of south eastern South Dakota. Experimental design was a randomized complete block design in a split-split plot treatment arrangement with four replications. Rotations, tillage …

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Profiling Transcription And Retrotransposition Of Mouse L1 Subfamilies, Lingqi Kong Jan 2020

Profiling Transcription And Retrotransposition Of Mouse L1 Subfamilies, Lingqi Kong

Electronic Theses and Dissertations

Transposable elements, also called jumping genes, comprise almost 45% of the human genome. In contrast, only 1% of the human genome is protein-coding sequences. The function and advantages of maintaining such massive copies of transposable elements in the human genome are still unclear. Long interspersed element 1 (L1), the most substantial group and the only active autonomous transposable element in the human genome, has revealed its unique roles in many diseases. The insertional mutagenesis induced by L1 retrotransposition events could threaten human genomic stability and generate unexpected mutations. L1 overexpression has been documented in both somatic and germline cells and, …

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Evaluating The Effects Of Yeast Cell Wall Component, Phytochemical Oil, And Vitamin E On Sow Antioxidant Status And Growth Performance Of Dam And Offspring, Lily P. Hernandez Jan 2020

Evaluating The Effects Of Yeast Cell Wall Component, Phytochemical Oil, And Vitamin E On Sow Antioxidant Status And Growth Performance Of Dam And Offspring, Lily P. Hernandez

Electronic Theses and Dissertations

Times of high metabolic activity in gestation and lactation, as well as periods of stress at weaning, can lead to greater incidences of oxidative stress in the dam and offspring during the suckling and post-weaning period. Oxidative stress is an imbalance between prooxidant molecules and the antioxidant defense system that can negatively impact growth and/or reproductive performance. The objective of this research was to evaluate the effectiveness of a yeast cell wall component (Citristim, ADM Nutrition, Quincy, IL), peppermint oil, and ɣ-tocopherol in gestation and lactation diets to alleviate the impact of oxidative stress on maternal reproductive and offspring growth …

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Examining Biodiversity Metrics And The Utility Of Dna Barcoding In The Northern Great Plains, Sarah Herzog Jan 2020

Examining Biodiversity Metrics And The Utility Of Dna Barcoding In The Northern Great Plains, Sarah Herzog

Electronic Theses and Dissertations

Due to heavy threats to remaining global floral and faunal diversity, it is imperative we can identify species and quantify ecosystem health to find best practices for land management and conservation. The tallgrass prairies of the Northern Great Plains are one example of a heavily imperiled ecosystem. The tallgrass prairies have been reduced to less one percent of their historical extent and are facing continued loss. Genetic approaches and evolutionary theory offer insights for identifying species and assessing how biodiversity metrics may correlate with ecosystem processes. My two projects aim to address two facets imperative to conservation in the tallgrass …

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Exploring Heterogeneous Phenotypes In Response To Stress, Heather S. Deter Jan 2020

Exploring Heterogeneous Phenotypes In Response To Stress, Heather S. Deter

Electronic Theses and Dissertations

This work combines traditional microbiology with bioinformatic and synthetic biology approaches to study antibiotic tolerance. Antibiotic tolerance is a widespread phenomenon that facilitates antibiotic resistance and decreases the effectiveness of antibiotic treatment. Tolerance is distinct from antibiotic resistance, because tolerance is short term survival and typically results from phenotypic variations rather than genetic variation. The molecular mechanisms underlying tolerance are varied and debated in the literature. I have explored two intracellular processes related to tolerance, toxin-antitoxin (TA) systems (Chapter 2) and proteases (Chapter 4). Specifically, I focus on the ratio of antitoxin-to-toxin in type II TA systems, because type II …

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"It's None Of Your Damn Business" : Communication Among Newlyweds Regarding Family Expansion Preferences, Kiersten Koehler Jan 2020

"It's None Of Your Damn Business" : Communication Among Newlyweds Regarding Family Expansion Preferences, Kiersten Koehler

Electronic Theses and Dissertations

As newlyweds begin their new adventure as a married couple, the discussion of family expansion is inevitable. This thesis seeks to understand how newlyweds discuss their plans for family expansion among each other and to others by applying the theory of communication privacy management. Ten newlywed couples were interviewed regarding their experiences navigating the topic of family expansion and reproduction. Specifically, the couples were asked about preferences for privacy and control, and what expectations the couples have when disclosing information about their preferences for family expansion. The data demonstrated that communication privacy management may not look the same among each …

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Investigating Links Between Soil Microbial Structure And Function In Three Major Plant Communities Across Temporal Scales Of Arctic Alaska, Kaj Lynoe Jan 2020

Investigating Links Between Soil Microbial Structure And Function In Three Major Plant Communities Across Temporal Scales Of Arctic Alaska, Kaj Lynoe

Electronic Theses and Dissertations

Arctic microbial systems continue to get attention today as our understanding regarding their structure and function in a changing system is paramount to C feedbacks with warming and changes in precipitation. Plant communities and microbial community processes across the Arctic landscape are central to understanding tundra ecosystem processes because environmental conditions and plant community structure drive microbial cycling of soil organic matter. Here, we want to understand how soil microbial respiration, mineralization, biomass, and community composition are linked to three Alaskan tundra plant communities, namely Shrub, Tussock, and Sedge tundra and the seasonal variability in this system. A total of …

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Modification Of Plant Proteins And Their Potential Application As Fish Meal Replacements In Rainbow Trout Oncorhynchus Mykiss Feeds, Miran Jaza Hama Salh Jan 2020

Modification Of Plant Proteins And Their Potential Application As Fish Meal Replacements In Rainbow Trout Oncorhynchus Mykiss Feeds, Miran Jaza Hama Salh

Electronic Theses and Dissertations

Soybean meals (SBM) and its by-products are the most common plant feedstuffs that are used in feeds for a variety of fish species of fish over the last three decades due to high protein levels and good amino acid profile, in comparison with other plant protein sources. In the last two decades the production of soybean was around zero metric tons (Index, 2020). Barley is another plant protein that has been tested in some species diets. While barley is used in many areas such as brewing industry, animal feeding, human consumption, it is mainly used for animal feeding in Kurdistan. …

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Learning From And Engaging With Assessment And Feedback (Leaf): Growing Practice, Emma Robinson, Ziene Mottiar, Greg Byrne, Jane Courtney, Geraldine Gorham, Anne Hurley, Louise Lynch, Leanne Harris, Denise O'Leary Jan 2020

Learning From And Engaging With Assessment And Feedback (Leaf): Growing Practice, Emma Robinson, Ziene Mottiar, Greg Byrne, Jane Courtney, Geraldine Gorham, Anne Hurley, Louise Lynch, Leanne Harris, Denise O'Leary

Irish Journal of Academic Practice

The LEAF (Learning from and Engaging with Assessment and Feedback) project addressed a key issue in third-level teaching and learning: assessment and feedback. The LEAF team comprised 18 academics from across the TU Dublin City Campus and representatives from all Colleges, along with the Director of Student Affairs and the Students’ Union Education Officer. This paper presents the findings of the LEAF project. Assessment strategies have been shown to have a large impact on shaping student learning process strategies which feedforward into key employability skills. Learning from best practice, surveys from staff and students and analysis of the quality documents, …

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Impact Of Altering Lys : Energy Ratio During Gestation On Sow Productivity, Piglet Robustness, And Piglet Post-Wean Growth Performance, Tiffany C. Bruhn Jan 2020

Impact Of Altering Lys : Energy Ratio During Gestation On Sow Productivity, Piglet Robustness, And Piglet Post-Wean Growth Performance, Tiffany C. Bruhn

Electronic Theses and Dissertations

Across 4 breeding groups, 63 primiparous and multiparous females were blocked by parity, balanced by weight, then randomly assigned to one of 3 gestation feeding regimens: Control (CON), 1.50 g SID Lys/Mcal ME from d2-110 of gestation; Phase Feeding 1 (PF1), 1.50 g SID Lys/Mcal ME from d2-89 and 2.11 g SID Lys/Mcal ME from d 90-110 of gestation; Phase Feeding 2 (PF2), 1.25, 1.07, and 0.88g SID Lys/Mcal ME from d2-89 for gilts, parity 1, and parity 2+, respectively and 2.11 g SID Lys/Mcal ME from d90-110 of gestation over 2 reproductive cycles. During lactation, all sows received a …

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Teachers' Perceptions Of Experiential Learning In The 3-Circle Agricultural Education Model, Jon C. Schreurs Jan 2020

Teachers' Perceptions Of Experiential Learning In The 3-Circle Agricultural Education Model, Jon C. Schreurs

Electronic Theses and Dissertations

The purpose of this paper is to describe teachers’ perceptions of experiential learning and its effects on student learning, understanding, and engagement through agriculture education's three-circle model. This paper explores teachers’ perceptions of the value and importance of experiential learning in agriculture education instruction, FFA, and supervised agricultural experience. Further, I explore experiential learning, constructivism, and hands-on learning as the foundational instructional practices used in agricultural education. Agricultural education teachers from southwest Minnesota were surveyed to determine how they are using experiential learning in their agriculture education programs, including classroom instruction, FFA, and supervised agricultural experiences.

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Numerical Study Of Paramagnetic Elliptical Microparticles In Curved Channels And Uniform Magnetic Fields, Christopher Sobecki, Jie Zhang, Cheng Wang Jan 2020

Numerical Study Of Paramagnetic Elliptical Microparticles In Curved Channels And Uniform Magnetic Fields, Christopher Sobecki, Jie Zhang, Cheng Wang

Mechanical and Aerospace Engineering Faculty Research & Creative Works

We numerically investigated the dynamics of a paramagnetic elliptical particle immersed in a low Reynolds number Poiseuille flow in a curved channel and under a uniform magnetic field by direct numerical simulation. A finite element method, based on an arbitrary Lagrangian-Eulerian approach, analyzed how the channel geometry, the strength and direction of the magnetic field, and the particle shape affected the rotation and radial migration of the particle. The net radial migration of the particle was analyzed after executing a π rotation and at the exit of the curved channel with and without a magnetic field. In the absence of …

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