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2023

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The Summer Of The Pivot: Prioritizing Equity In Remote Instruction Through A Multidisciplinary Community Of Practice Initiative At A Canadian University, Ardavan Eizadirad, Brent Hagerman, Louise Dawe, Shirley Hall, Tristan Long, Michelle Skop, Erin Hodson, Bina Mehta, Michael Daly, Joseph Beer Jan 2023

The Summer Of The Pivot: Prioritizing Equity In Remote Instruction Through A Multidisciplinary Community Of Practice Initiative At A Canadian University, Ardavan Eizadirad, Brent Hagerman, Louise Dawe, Shirley Hall, Tristan Long, Michelle Skop, Erin Hodson, Bina Mehta, Michael Daly, Joseph Beer

Education Faculty Publications

This article is about the multidisciplinary Community of Practice (CoP) initiative that was implemented in the summer of 2020- summer of the pivot- at a Canadian post-secondary institution to prepare faculty, staff, and students for remote teaching and learning while navigating pandemic conditions created by COVID-19. The CoP as a case study using Critical Theory as a theoretical framework examines the experiences of a collective group of faculty and staff from different disciplines leading a multidisciplinary university-wide initiative and the implications of the approach for promoting effective pedagogies for teaching and learning remotely. Findings based on feedback from workshop attendees, …

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Hyperinsulinemic Lew.1wr1 Rats Develop Insulin Resistance And Nonalcoholic Steatohepatitis, Madushika M. Wimalarathne Jan 2023

Hyperinsulinemic Lew.1wr1 Rats Develop Insulin Resistance And Nonalcoholic Steatohepatitis, Madushika M. Wimalarathne

Dissertations

The pathophysiological causes of nonalcoholic steatohepatitis (NASH) development are not fully understood but are often associated with hyperinsulinemia, insulin resistance and ectopic lipid accumulation. A subpopulation of type 1 diabetes patients develops the pathophysiological parameters to be termed “double diabetes,” which is associated with NASH. The objective of this work was to identify metabolic features of double diabetes and assess if LEW.1WR1 rats develop NASH. I assessed pathophysiologically relevant protein changes using proteomics and western blotting. I found that 17-week-old LEW.1WR1 rats showed protein changes related to non-alcoholic fatty liver disease, a precursor to NASH. We tested a second population …

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Opportunities For Transformation: Equity, Diversity, And Inclusion Across The Developmental Disabilities Network, Lydia Ocasio-Stoutenburg, Jacy Farkas Jan 2023

Opportunities For Transformation: Equity, Diversity, And Inclusion Across The Developmental Disabilities Network, Lydia Ocasio-Stoutenburg, Jacy Farkas

Developmental Disabilities Network Journal

No abstract provided.

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Analytical And Numerical Negative Boundedness Of Fractional Differences With Mittag–Leffler Kernel, Pshtiwan Othman Mohammed, Rajendra Dahal, Christopher S. Goodrich, Y. S. Hamed, Dumitru Baleanu Jan 2023

Analytical And Numerical Negative Boundedness Of Fractional Differences With Mittag–Leffler Kernel, Pshtiwan Othman Mohammed, Rajendra Dahal, Christopher S. Goodrich, Y. S. Hamed, Dumitru Baleanu

Mathematics and Statistics

We show that a class of fractional differences with Mittag–Leffler kernel can be negative and yet monotonicity information can still be deduced. Our results are complemented by numerical approximations. This adds to a growing body of literature illustrating that the sign of a fractional difference has a very complicated and subtle relationship to the underlying behavior of the function on which the fractional difference acts, regardless of the particular kernel used.

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Factors That Predict Weight Loss Success Differ By Diet Intervention Type, Jordan Losavio, Michael J. Keenan, Elizabeth A. Gollub, Heidi J. Silver Jan 2023

Factors That Predict Weight Loss Success Differ By Diet Intervention Type, Jordan Losavio, Michael J. Keenan, Elizabeth A. Gollub, Heidi J. Silver

Faculty Publications

Background: Many types of diet intervention can achieve negative energy balance and successful weight loss in persons with obesity. However, within any dietary strategy, there is large inter-individual variation in the weight loss response. The aim of this study is to determine factors that predict weight loss success for diet interventions that vary by macronutrient and caloric composition. Methods: Participants with BMI 30.0 to 49.9 kg/m2 self-selected one of three diet intervention trials for weight loss: low carbohydrate (LOW CHO), low fat (LOW FAT), or low calorie (LOW KCAL). Multivariable regression models were developed to determine the significance of predictor …

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Comparative Genomics Of The Niche-Specific Plant Pathogen Streptomyces Ipomoeae Reveal Novel Genome Content And Organization, Natasha R. Soares, José C. Huguet-Tapia, Dongli Guan, Christopher A. Clark, Kuei Ting Yang, Olivia R. Kluchka, Raju S. Thombal, Rendy Kartika, Jonathan H. Badger, Gregg S. Pettis Jan 2023

Comparative Genomics Of The Niche-Specific Plant Pathogen Streptomyces Ipomoeae Reveal Novel Genome Content And Organization, Natasha R. Soares, José C. Huguet-Tapia, Dongli Guan, Christopher A. Clark, Kuei Ting Yang, Olivia R. Kluchka, Raju S. Thombal, Rendy Kartika, Jonathan H. Badger, Gregg S. Pettis

Faculty Publications

The sweet potato soil rot pathogen Streptomyces ipomoeae differs in disease pathology, host range, and virulence factor production from Streptomyces species that cause scab diseases on potato and other plant hosts. Nevertheless, previous phylogenomic analysis suggested S. ipomoeae and the oldest scab species, Streptomyces scabiei, are derived from a common ancestor. While genomes of scab pathogens have been described in some detail, similar knowledge of S. ipomoeae has been lacking. Here, we performed comparative genomic analyses involving both virulent and avirulent strains of S. ipomoeae, along with other plant-pathogenic and saprophytic Streptomyces spp. The txt gene cluster for the phytotoxin …

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Ophiclypeus, A New Genus Of Cardiochilinae Ashmead (Hymenoptera, Braconidae) From The Oriental Region With Descriptions Of Three New Species, Ilgoo Kang, Mostafa Ghafouri Moghaddam, Michael J. Sharkey, Donald L.J. Quicke, Buntika A. Butcher, Christopher E. Carlton Jan 2023

Ophiclypeus, A New Genus Of Cardiochilinae Ashmead (Hymenoptera, Braconidae) From The Oriental Region With Descriptions Of Three New Species, Ilgoo Kang, Mostafa Ghafouri Moghaddam, Michael J. Sharkey, Donald L.J. Quicke, Buntika A. Butcher, Christopher E. Carlton

Faculty Publications

A new genus of the braconid subfamily Cardiochilinae, Ophiclypeus gen. nov., is described and illustrated based on three new species: O. chiangmaiensis Kang, sp. nov. type species (type locality: Chiang Mai, Thailand), O. dvaravati Ghafouri Moghaddam, Quicke & Butcher, sp. nov. (type locality: Saraburi, Thailand), and O. junyani Kang, sp. nov. (type locality: Dalin, Taiwan). We provide morphological diagnostic characters to separate the new genus from other cardiochiline genera. A modified key couplet (couplet 5) and a new key couplet (couplet 16) are provided with detailed imag-es for Dangerfield’s key to the world cardiochiline genera to facilitate recognition of Ophiclypeus …

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Challenges In The Combination Of Radiotherapy And Immunotherapy For Breast Cancer, Rui Zhang, Samantha D. Clark, Beibei Guo, Tianyi Zhang, Duane Jeansonne, Samithamby J. Jeyaseelan, Joseph Francis, Weishan Huang Jan 2023

Challenges In The Combination Of Radiotherapy And Immunotherapy For Breast Cancer, Rui Zhang, Samantha D. Clark, Beibei Guo, Tianyi Zhang, Duane Jeansonne, Samithamby J. Jeyaseelan, Joseph Francis, Weishan Huang

Faculty Publications

Introduction: Immunotherapy (IT) is showing promise in the treatment of breast cancer, but IT alone only benefits a minority of patients. Radiotherapy (RT) is usually included in the standard of care for breast cancer patients and is traditionally considered as a local form of treatment. The emerging knowledge of RT-induced systemic immune response, and the observation that the rare abscopal effect of RT on distant cancer metastases can be augmented by IT, have increased the enthusiasm for combinatorial immunoradiotherapy (IRT) for breast cancer patients. However, IRT largely follows the traditional sole RT and IT protocols and does not consider patient …

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A Bayesian Phase I/Ii Design To Determine Subgroup-Specific Optimal Dose For Immunotherapy Sequentially Combined With Radiotherapy, Beibei Guo, Yong Zang, Li Hsiang Lin, Rui Zhang Jan 2023

A Bayesian Phase I/Ii Design To Determine Subgroup-Specific Optimal Dose For Immunotherapy Sequentially Combined With Radiotherapy, Beibei Guo, Yong Zang, Li Hsiang Lin, Rui Zhang

Faculty Publications

Sequential administration of immunotherapy following radiotherapy (immunoRT) has attracted much attention in cancer research. Due to its unique feature that radiotherapy upregulates the expression of a predictive biomarker for immunotherapy, novel clinical trial designs are needed for immunoRT to identify patient subgroups and the optimal dose for each subgroup. In this article, we propose a Bayesian phase I/II design for immunotherapy administered after standard-dose radiotherapy for this purpose. We construct a latent subgroup membership variable and model it as a function of the baseline and pre-post radiotherapy change in the predictive biomarker measurements. Conditional on the latent subgroup membership of …

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Targeting The Aspergillus Flavus P2c Gene Through Host-Induced Gene Silencing Reduces A. Flavus Infection And Aflatoxin Contamination In Transgenic Maize, Yenjit Raruang, Olanike Omolehin, Dongfang Hu, Qijian Wei, Surassawadee Promyou, Lidiya J. Parekattil, Kanniah Rajasekaran, Jeffrey W. Cary, Kan Wang, Zhi Yuan Chen Jan 2023

Targeting The Aspergillus Flavus P2c Gene Through Host-Induced Gene Silencing Reduces A. Flavus Infection And Aflatoxin Contamination In Transgenic Maize, Yenjit Raruang, Olanike Omolehin, Dongfang Hu, Qijian Wei, Surassawadee Promyou, Lidiya J. Parekattil, Kanniah Rajasekaran, Jeffrey W. Cary, Kan Wang, Zhi Yuan Chen

Faculty Publications

Aspergillus flavus is an opportunistic fungal pathogen that infects maize and produces aflatoxins. Using biocontrol or developing resistant cultivars to reduce aflatoxin contamination has only achieved limited success. Here, the A. flavus polygalacturonase gene (p2c) was targeted for suppression through host-induced gene silencing (HIGS) to reduce aflatoxin contamination in maize. An RNAi vector carrying a portion of the p2c gene was constructed and transformed into maize B104. Thirteen out of fifteen independent transformation events were confirmed to contain p2c. The T2 generation kernels containing the p2c transgene had less aflatoxin than those without the transgene in six out of eleven …

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The Nitrogen-Dependent Gaba Pathway Of Tomato Provides Resistance To A Globally Invasive Fruit Fly, Hao Li, Yuan Zhang, Hu Li, Gadi V. P. Reddy, Zhihong Li, Fajun Chen, Yucheng Sun, Zihua Zhao Jan 2023

The Nitrogen-Dependent Gaba Pathway Of Tomato Provides Resistance To A Globally Invasive Fruit Fly, Hao Li, Yuan Zhang, Hu Li, Gadi V. P. Reddy, Zhihong Li, Fajun Chen, Yucheng Sun, Zihua Zhao

Faculty Publications

Introduction: The primary metabolism of plants, which is mediated by nitrogen, is closely related to the defense response to insect herbivores. Methods: An experimental system was established to examine how nitrogen mediated tomato resistance to an insect herbivore, the oriental fruit fly (Bactrocera dorsalis). All tomatoes were randomly assigned to the suitable nitrogen (control, CK) treatment, nitrogen excess (NE) treatment and nitrogen deficiency (ND) treatment. Results: We found that nitrogen excess significantly increased the aboveground biomass of tomato and increased the pupal biomass of B. dorsalis. Metabolome analysis showed that nitrogen excess promoted the biosynthesis of amino acids in healthy …

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Biology, Genetic Diversity, And Conservation Of Wild Bees In Tree Fruit Orchards, Olivia Kline, Ngoc T. Phan, Mitzy F. Porras, Joshua Chavana, Coleman Z. Little, Lilia Stemet, Roshani S. Acharya, David J. Biddinger, Gadi V.P. Reddy, Edwin G. Rajotte, Neelendra K. Joshi Jan 2023

Biology, Genetic Diversity, And Conservation Of Wild Bees In Tree Fruit Orchards, Olivia Kline, Ngoc T. Phan, Mitzy F. Porras, Joshua Chavana, Coleman Z. Little, Lilia Stemet, Roshani S. Acharya, David J. Biddinger, Gadi V.P. Reddy, Edwin G. Rajotte, Neelendra K. Joshi

Faculty Publications

Different species of bees provide essential ecosystem services by pollinating various agricultural crops, including tree fruits. Many fruits and nuts depend on insect pollination, primarily by wild and managed bees. In different geographical regions where orchard crops are grown, fruit growers rely on wild bees in the farmscape and use orchard bees as alternative pollinators. Orchard crops such as apples, pears, plums, apricots, etc., are mass-flowering crops and attract many different bee species during their bloom period. Many bee species found in orchards emerge from overwintering as the fruit trees start flowering in spring, and the active duration of these …

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Invasiveness, Biology, Ecology, And Management Of The Fall Armyworm, Spodoptera Frugiperda, Marc Kenis, Giovanni Benelli, Antonio Biondi, Paul André Calatayud, Roger Day, Nicolas Desneux, Rhett D. Harrison, Darren Kriticos, Ivan Rwomushana, Johnnie Van Den Berg, François Verheggen, Yong Jun Zhang, Lakpo Koku Agboyi, Régis Besmer Ahissou, Malick N. Ba, Julio Bernal, Adeney Freitas De Bueno, Yves Carrière, Geraldo Andrade Carvalho, Xue Xin Chen, Lizette Cicero, Hannalene Du Plessis, Regan Early, Patrick Fallet, Komi K.M. Fiaboe, Dnyaneshwar M. Firake, Georg Goergen, Astrid T. Groot, Raul N.C. Guedes, Ankita Gupta, Gao Hu, F. N. Huang, Lara R. Jaber Jan 2023

Invasiveness, Biology, Ecology, And Management Of The Fall Armyworm, Spodoptera Frugiperda, Marc Kenis, Giovanni Benelli, Antonio Biondi, Paul André Calatayud, Roger Day, Nicolas Desneux, Rhett D. Harrison, Darren Kriticos, Ivan Rwomushana, Johnnie Van Den Berg, François Verheggen, Yong Jun Zhang, Lakpo Koku Agboyi, Régis Besmer Ahissou, Malick N. Ba, Julio Bernal, Adeney Freitas De Bueno, Yves Carrière, Geraldo Andrade Carvalho, Xue Xin Chen, Lizette Cicero, Hannalene Du Plessis, Regan Early, Patrick Fallet, Komi K.M. Fiaboe, Dnyaneshwar M. Firake, Georg Goergen, Astrid T. Groot, Raul N.C. Guedes, Ankita Gupta, Gao Hu, F. N. Huang, Lara R. Jaber

Faculty Publications

The fall armyworm (FAW), Spodoptera frugiperda (JE Smith, 1797), is a serious pest of several crops, particularly maize and other cereals. It has long been known as a pest in the Americas and has invaded most of Africa and parts of the Middle East, Asia, and Australia in the last six years. Its new status as an invasive species causing serious damage in many regions worldwide has highlighted the need for better understanding and has generated much research. In this article, we provide a comprehensive review of FAW covering its (i) taxonomy, biology, ecology, genomics, and microbiome, (ii) worldwide status …

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History, Annotated Gazetteer, And Bibliography Of Sarawak Ornithology, Frederick H. Sheldon, Dency F. Gawain, Daisy G. S. Kho, Rosalina Regai, Subir B. Shakya, Chin Aik Yeap Jan 2023

History, Annotated Gazetteer, And Bibliography Of Sarawak Ornithology, Frederick H. Sheldon, Dency F. Gawain, Daisy G. S. Kho, Rosalina Regai, Subir B. Shakya, Chin Aik Yeap

Occasional Papers of the Museum of Natural Science, Louisiana State University

Sarawak is Malaysia’s largest state, covering most of northern Borneo. It has a remarkable history of scientific bird study, starting in the 1840s and growing ever since. To set the stage for the gazetteer, which is the core of this paper, we start with a review of this history and discuss various forces that have influenced the direction of bird research in the state. Following this introduction comes the gazetteer, which is an annotated list of c. 865 sites in Sarawak where birds have been collected, studied, or regularly observed. The gazetteer provides the latitude, longitude, and elevation of each …

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Se Jeter À L'Eau Avec Les Poissons De La Louisiane, Prosanta Chakrabarty, Sophie Warny, Valérie Stampley Jan 2023

Se Jeter À L'Eau Avec Les Poissons De La Louisiane, Prosanta Chakrabarty, Sophie Warny, Valérie Stampley

Special Publications of the Museum of Natural Science

No abstract provided.

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Quantifying The Effects Of Hvac Operation To Mitigate Aerosol Concentration In A Classroom Using Cfd, Scott Deprez Jan 2023

Quantifying The Effects Of Hvac Operation To Mitigate Aerosol Concentration In A Classroom Using Cfd, Scott Deprez

Electronic Theses and Dissertations

Heating, ventilation, and air conditioning (HVAC) is a complex mechanical system for the transition of air between outdoor and indoor areas. These systems are directly responsible for temperature, humidity, and air flow into any given space, thereby providing a level of comfort to those who live indoors. These systems account for 52 percent of U.S. energy consumption. When designing HVAC systems, indoor air quality (IAQ) is the main focus for achieving safe and clean air, such as in the case of airborne diseases. HVAC systems are responsible for the flow of air in indoor spaces and thereby expand the transmissible …

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The Impact Of Increasing Dietary Levels Of Hybrid Rye On Growing-Finishing Pig Performance, Carcass Characteristics, And Meat Quality, Caitlyn Sullivan Jan 2023

The Impact Of Increasing Dietary Levels Of Hybrid Rye On Growing-Finishing Pig Performance, Carcass Characteristics, And Meat Quality, Caitlyn Sullivan

Electronic Theses and Dissertations

The objective of this trial was to determine the effects of increasing dietary levels of hybrid rye on growth performance, carcass characteristics, and product quality of growing-finishing pigs. A total of 2,400 barrows and gilts (FAST x PIC 800, initial wt. 44.9 kg) were utilized, as pigs were randomly assigned to one of the four dietary treatments. Diets were corn-soybean based and hybrid rye replaced corn at 0, 40, 70, or 100%. All diets were formulated to meet or exceed the 2012 NRC requirements for all nutrients and fed through a five-phase feeding program (44.9 to 125 kg, respectively). Pigs …

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Genome-Wide Association Studies And Advanced Genomic Selection Strategies: Towards The Optimization Of Oat (Avena Sativa L) Breeding, Girma Ayana Jan 2023

Genome-Wide Association Studies And Advanced Genomic Selection Strategies: Towards The Optimization Of Oat (Avena Sativa L) Breeding, Girma Ayana

Electronic Theses and Dissertations

Oats are important cereal crops worldwide, primarily valued for their nutritional and health benefits. The primary goal of oat breeding programs is to accelerate genetic gain to develop oat varieties with the desired product profiles, with the aim of meeting the needs and expectations of growers, processors, and consumers. Achieving this goal involves conducting extensive and resource-intensive field trials, particularly for traits such as crop yield and grain quality, which are strongly influenced by environmental factors. The availability of cost-effective molecular markers and tools like genome-wide association studies (GWAS) and genomic selection have the potential to accelerate the oat breeding …

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Characterization Of Parp1-Dependent Poly-Adp-Ribosylation Of Sprtn, Quincee Simonson Jan 2023

Characterization Of Parp1-Dependent Poly-Adp-Ribosylation Of Sprtn, Quincee Simonson

Electronic Theses and Dissertations

DNA-protein crosslinks (DPCs) are a type of DNA lesion that form when proteins become covalently linked to DNA. It is estimated that replicating cells experience approximately 6,000 DPCs per day per genome during exponential growth (Ruggiano & Ramadan, 2021). If left unrepaired, DPCs can be lethal to cells. For this reason, cells have evolved multiple pathways to repair or bypass DPCs to survive. One such pathway involves SPRTN, a nuclear metalloprotease that plays a key role in the repair of DPCs through direct proteolysis (Lopez-Mosqueda et al., 2016; Vaz et al., 2016). Once SPRTN degrades the bulky protein component of …

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Advances In Bioelectrode Design For Developing Electrochemical Biosensors, Nabajyoti Kalita, Sudarshan Gogoi, Shelley D. Minteer, Pranab Goswami Jan 2023

Advances In Bioelectrode Design For Developing Electrochemical Biosensors, Nabajyoti Kalita, Sudarshan Gogoi, Shelley D. Minteer, Pranab Goswami

Chemistry Faculty Research & Creative Works

The critical performance factors such as selectivity, sensitivity, operational and storage stability, and response time of electrochemical biosensors are governed mainly by the function of their key component, the bioelectrode. Suitable design and fabrication strategies of the bioelectrode interface are essential for realizing the requisite performance of the biosensors for their practical utility. A multifaceted attempt to achieve this goal is visible from the vast literature exploring effective strategies for preparing, immobilizing, and stabilizing biorecognition elements on the electrode surface and efficient transduction of biochemical signals into electrical ones (i.e., current, voltage, and impedance) through the bioelectrode interface with the …

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Develop Biochar-Based Control Release Nitogen Fertilizers Using Biodegradable Polypropylene, Abdulkarim Aldekhail Jan 2023

Develop Biochar-Based Control Release Nitogen Fertilizers Using Biodegradable Polypropylene, Abdulkarim Aldekhail

Electronic Theses and Dissertations

Nitrogen (N) is an indispensable key nutrient for crop plant growth, health, and yield, which significantly affects crop productivity. N fertilizers are wildly utilized in agriculture. Managing N application stands as a necessity to achieve optimal crop yield. Urea is one of the most common N fertilizers in agricultural practices due to its high N content and cost-effectiveness. Due to its commercial scale, feasibility, and reliability, it is demonstrating potential as a medium to improve agricultural sustainability. However, economic challenges, and environmental pollution remain as setbacks. This research focuses on selecting cost-effective and environmentally friendly coating materials for the fabrication …

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Seroprevalence Of Sars-Cov-2 Antibodies Among Rural Healthcare Workers, Jordan Neises Jan 2023

Seroprevalence Of Sars-Cov-2 Antibodies Among Rural Healthcare Workers, Jordan Neises

Electronic Theses and Dissertations

The objective of this longitudinal cohort study was to determine the seroprevalence of antibodies to severe acute respiratory syndrome coronavirus-2 (SARSCoV- 2) in healthcare workers employed at healthcare clinics in three rural counties in eastern South Dakota and western Minnesota from May 13, 2020 through December 22, 2020. Three blood draws were performed at five clinical sites and tested for the presence of antibodies against the SARS-CoV-2 virus. Serum samples were tested for the presence of antibodies using a fluorescent microsphere immunoassay (FMIA), neutralization of SARS-CoV-2 Spike-pseudotyped particles (SARS-CoV-2pp) assay, and serum virus neutralization (SVN) assay. The seroprevalence was determined …

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Extraction, Characterization, And Utilization Of Yellow Pea Starch, Abdulmalik Albu Tuwaybah Jan 2023

Extraction, Characterization, And Utilization Of Yellow Pea Starch, Abdulmalik Albu Tuwaybah

Electronic Theses and Dissertations

Dry peas, a leguminous crop, are one of the world's oldest crops, accounting for 35–40% of total pulse trade. Pea starch is an inexpensive source of starch since it can be obtained as a by-product of protein extraction. Recovering the starch from protein isolation streams (i.e., before or after) improves the environmental impact of the protein isolation process. The goal of the study was to transform low-value pea starch into highvalue starch through starch extraction and food application. Two methods of starch extraction were used (47.5% ethanol treatment and SC CO2 + EtOH extraction). Starch samples were analyzed for chemical, …

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Quantitative Change Analysis Of Undisturbed Lands In Eastern South Dakota: 2012-2021, Riley W. Wollschlager Jan 2023

Quantitative Change Analysis Of Undisturbed Lands In Eastern South Dakota: 2012-2021, Riley W. Wollschlager

Electronic Theses and Dissertations

The actual rate of loss of undisturbed prairie and woodland in eastern South Dakota is unknown, and the landscape composition of the region continues to change. Undisturbed land is land with no proven prior cropping or other disturbance history. Agriculture, development, recreation, and other land use practices create disturbances resulting in the further conversion of undisturbed prairies and woodlands. Previous work by South Dakota State University (SDSU) quantified the remaining undisturbed land in eastern South Dakota as of 2012 (Bauman et al 2016). Farm Service Agency (FSA) common land unit (CLU) and National Agricultural Imagery Program (NAIP) imagery were the …

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A Study Of The Local Deep Galerkin Method For The Modified Cahn Hilliard Equation, Shi Wen Wong Jan 2023

A Study Of The Local Deep Galerkin Method For The Modified Cahn Hilliard Equation, Shi Wen Wong

Electronic Theses and Dissertations

Solving higher order partial differential equations (PDEs) can often prove to be a challenging task due to the involvement of higher-order derivatives of the unknown function, particularly for complex problems. The higher the order of the PDE, the more challenging it becomes to obtain an analytical solution. In such cases, alternative numerical methods are often used, such as finite element method or finite difference method. However, these methods can be computationally expensive and require a significant amount of mathematical expertise to implement. In recent times, there has been significant progress in applying neural networks to various fields, including the solution …

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Building No-Tillage Maize Nitrogen Recommendation Algorithm That Considers Improvements In Soil Health, Dwarika Bhattarai Jan 2023

Building No-Tillage Maize Nitrogen Recommendation Algorithm That Considers Improvements In Soil Health, Dwarika Bhattarai

Electronic Theses and Dissertations

In long-term no-till fields, farmers have reported that less N is required to optimize maize (Zea mays L.) yields in long term no-tillage fields than conventional tillage fields. These reductions may be attributed to improved soil health resulting from increasing soil organic matter, higher soil microbial activities, and improved water and nutrient use efficiency. However, the impact of soil health measurements on fertilizer-N requirement has not been determined. The objective of this dissertation was to compare different regional N recommendation models to measured values and develop a maize fertilizer-N recommendation model, using machine learning approaches, that includes adjustments based on …

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Impact Of Virtual Fence Technology On Yearling Steer Behavior, Performance, And Energetic Expenditure, Logan Riley Vandermark Jan 2023

Impact Of Virtual Fence Technology On Yearling Steer Behavior, Performance, And Energetic Expenditure, Logan Riley Vandermark

Electronic Theses and Dissertations

Beef cattle production in the U.S. is largely dependent upon extensive rangelands like the Northern Great Plains. Solutions are needed to meet both the demand of animal-based protein products for a growing world population and the desire for producers to manage for several different ecosystem functions. Virtual fencing (VF) is an emerging precision technology that has the potential to revolutionize livestock management on extensive rangeland systems. However, the need to quantify animal behavior and performance differences using emerging precision technologies, like VenceTM, is ever growing. Thus, the objective of this research was to determine the impact of virtual fencing on …

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Nuclear Magnetic Resonance Study Of Co2 Capture By Fluoroalkylamines: Ammonium Ion Pka Depression Via Fluorine Modification And Thermochemistry Of Carbamylation, Brian Jameson, Kari Knobbe, Rainer Glaser Jan 2023

Nuclear Magnetic Resonance Study Of Co2 Capture By Fluoroalkylamines: Ammonium Ion Pka Depression Via Fluorine Modification And Thermochemistry Of Carbamylation, Brian Jameson, Kari Knobbe, Rainer Glaser

Chemistry Faculty Research & Creative Works

We are developing energy-efficient and reversible carbon capture and release (CCR) systems that mimic the Lys201 carbamylation reaction in the active site of ribulose-1,5-bisphosphate carboxylase-oxygenase (RuBisCO). The multiequilibria scenario ammonium ion Xa ⇌ amine Xb ⇌ carbamic acid Xc ⇌ carbamate Xd requires the presence of both free amine and CO2 for carbamylation and is affected by the pKa(Xa). Two fluorination strategies aimed at ammonium ion pKa depression and low pH carbamylation were analyzed with (2,2,2-trifluoroethyl) butylamine 2b and 2,2-difluoropropylamine 3b and compared to butylamine 1b. The determination of K1 and ΔG1 of the carbamylation reactions requires the solution of …

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Natural Product Co-Metabolism And The Microbiota–Gut–Brain Axis In Age-Related Diseases, Mark Obrenovich, Sandeep Kumar Singh, Yi Li, George Perry, Bushra Siddiqui, Waqas Haq, V. Prakash Reddy Jan 2023

Natural Product Co-Metabolism And The Microbiota–Gut–Brain Axis In Age-Related Diseases, Mark Obrenovich, Sandeep Kumar Singh, Yi Li, George Perry, Bushra Siddiqui, Waqas Haq, V. Prakash Reddy

Chemistry Faculty Research & Creative Works

Complementary alternative medicine approaches are growing treatments of diseases to standard medicine practice. Many of these concepts are being adopted into standard practice and orthomolecular medicine. Age-related diseases, in particular neurodegenerative disorders, are particularly difficult to treat and a cure is likely a distant expectation for many of them. Shifting attention from pharmaceuticals to phytoceuticals and "bugs as drugs" represents a paradigm shift and novel approaches to intervention and management of age-related diseases and downstream effects of aging. Although they have their own unique pathologies, a growing body of evidence suggests Alzheimer's disease (AD) and vascular dementia (VaD) share common …

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Extracellular Poly(Hydroxybutyrate) Bioplastic Production Using Surface Display Techniques, Kevin Beaver, Ashwini Dantanarayana, Willisa Liou, Markus Babst, Shelley D. Minteer Jan 2023

Extracellular Poly(Hydroxybutyrate) Bioplastic Production Using Surface Display Techniques, Kevin Beaver, Ashwini Dantanarayana, Willisa Liou, Markus Babst, Shelley D. Minteer

Chemistry Faculty Research & Creative Works

Poly(hydroxybutyrate) is a biocompatible, biodegradable polyester synthesized naturally in a variety of microbial species. A greener alternative to petroleum-based plastics and sought after for biomedical applications, poly(hydroxybutyrate) has failed to break through as a leading material in the plastic industry due to its high cost of production. Specifically, the extraction of this material from within bacterial cells requires lysis of cells, which takes time, uses harsh chemicals, and starts the process again with growing new living cells. Recently, surface display of enzymes on bacterial membranes has become an emerging technique for extracellular biocatalysis. In this work, a fusion protein lpp-ompA-phaC …

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