Digital Commons Network^™

Evaluation Of Processing Variables To Increase The Solids Of Milk Protein Concentrates Prior To Drying, Achyut Mishra

Electronic Theses and Dissertations

It is a common practice in dairy industries to nanofilter milk protein concentrate (MPC) to increase the solids and further drying efficiency. Increasing protein and solids in MPC increases viscosity and resist feed-flow in membrane filtration. Previous research proved that increased temperature and hydrodynamic cavitation (HC) have significantly reduced the viscosity of MPC which can potentially increase the level of solids by reducing concentration polarization during nanofiltration (NF). We utilized plate and frame filtration (PF) as an alternate method to reduce the viscosity of MPC. In first objective, we studied the application of HC or elevated temperature (50˚C) or both …

Internet Of Things Based Wireless Sensor Network And Advanced Machine Learning Models For Precision Agriculture, Ahmed El-Magrous

Electronic Theses and Dissertations

Recent studies assumed that the world population would reach 10.3 billion by 2070. This will require more land for housing; simultaneously resulting in a loss of land for agricultural purposes. However, the new generations also need food, and the lack of new agrarian land is a critical reason that leads researchers and producers to improve daily agriculture practices by using precision agriculture concepts and technologies to increase yield and crop quality. This work represents the design, development, and testing of a customizable and cost-effective Weather-Soil Sensor Station (W-SSS) for use in Precision Agriculture based on high accuracy sensors, wireless communication, …

Bedding Application And Increasing Dosage Of Trenbolone Acetate And Estradiol In Implants For Beef Steers: Influence On Growth Performance, Carcass Characteristics, And Circulating Metabolite Responses, Dathan T. Smerchek

Electronic Theses and Dissertations

Three randomized complete block design feedlot experiments were conducted over the course of two years. Two experiments were conducted to investigate the effect of bedding use in confined beef steers. The third experiment evaluated the effects of implants containing increasing doses of trenbolone acetate (TBA) and estradiol benzoate (EB) in confined beef steers. Experiment 1 used Simmental × Angus steers (n = 240; initial body weight (BW) = 365 ± 22.5 kg). Experiment 2 used newly weaned Charolais × Red Angus steers (n = 162; initial BW = 278 ± 13.4 kg). Steers were allotted to 1 of 2 treatments: …

Participatory Action Research In Schools: Unpacking The Lived Inequities Of High Stakes Testing, Tiffany A. Dejaynes, Tabatha Cortes, Israt Hoque

Publications and Research

Purpose – This paper aims to examine a school-based Youth Participatory Action Research (YPAR) project on educational inequity and high stakes testing.

Design/methodology/approach – A former high school teacher (currently a university professor) and two former students (currently research assistants and university students) take up a youth studies framework to collaboratively resee multimodal artifacts from a tenth-grade course in qualitative research.

Findings – Findings illustrate the power of finding allies in peers and educators; the transformative power of deep participation; and the longitudinal nature of social change and action. Thus, this research demonstrates that when students are positioned as researchers, …

Governance Of Arctic Shipping: Rethinking Risks, Human Impacts And Regulation, Aldo Chircop, Floris Goerlandt, Claudio Aporta, Ronald Pelot

OER Texts

This open access book is a result of the Dalhousie-led research project Safe Navigation and Environment Protection, supported by a grant from the Ocean Frontier Institute’s the Canada First Research Excellent Fund (CFREF). The book focuses on Arctic shipping and investigates how ocean change and anthropogenic impacts affect our understanding of risk, policy, management and regulation for safe navigation, environment protection, conflict management between ocean uses, and protection of Indigenous peoples’ interests. A rapidly changing Arctic as a result of climate change and ice loss is rendering the North more accessible, providing new opportunities while producing impacts on the Arctic. …

Tranquility, Stephanie Wallace

The Laureate

No abstract provided.

The Boy In The Bar Of Soap, Delaney Novak

The Laureate

No abstract provided.

A Cathedral Not Made By Hands, Vincent J. Miller

Theology and Religious Studies Faculty Publications

In Laudato si’, Pope Francis offers a vision of moral responsibility rooted in awareness of the world around us. He points to St. Francis, who “looked with love” on all creatures, as a model. He writes of an “attitude of the heart, one which approaches life with serene attentiveness, which is capable of being fully present” to everyone and everything. And he also calls for an “intense dialogue” between religion and science, which has its own “gaze.” The H.J. Andrews Experimental Forest in Oregon, one of the world’s most studied ecosystems, offers an especially rich opportunity for such dialogue. Here …

The Parmesan Cheese Model System: Alleviation Of Browning Defect In Parmesan Cheese, Megan Huegli Aubrey

Electronic Theses and Dissertations

In cold temperature storage, Parmesan cheese can develop an undesirable browning defect. Certain pyrazine compounds converted from methylglyoxal have been identified and associated with the brown pigmentations in Parmesan cheese samples. This study focused on creating a cheese model system to study variables that caused browning and variables that helped reduce or alleviate browning. The cheese making steps for the cheese model system were monitored by measuring pH and TA and the final composition for % fat, % moisture, % salt and pH. Additionally, the cooling curve was studied to ensure all wheels of cheese made were cooled similarly. Cheese …

Characterization Of Ovine Ileal Epithelial And Myofibroblast Cell Lines And Their Role In Innate Immunity, Shaurav Bhattarai

Electronic Theses and Dissertations

Development of continuous cell lines has been an indispensable tool for studying disease pathogenesis at cellular and molecular level. Intestinal epithelial cells serve as a barrier between the luminal contents and internal tissue and face unique challenge in maintaining homeostasis. Any form of disruption in the uppermost intestinal epithelium exposes underlying intestinal subepithelial myofibroblast (ISEMF) cells to the luminal content, which results in the generation of immune responses from ISEMF cells. Our main goal was to establish and characterize intestinal epithelial and myofibroblast cell lines from a 3-day old sheep. ISEMF cells play significantly important role in wound healing, tissue …

Soil Physical And Hydrological Properties, And Greenhouse Gas Emissions Under Integrated Crop-Livestock Agroecosystems, Navdeep Singh

Electronic Theses and Dissertations

Cover crops (CCs) and grazing play a critical role in successful implementation of the integrated crop-livestock system (ICLS) because they can have a direct impact on soils and greenhouse gas emissions. The objectives of this study were to (i) evaluate the short-term impacts of CCs [grass dominated cover crops (GdC) and legume dominated cover crops (LdC)] and grazed CCs and corn (Zea mays L.) residue under oat (Avena sativa L.)–CC–corn rotation on soil physical and hydrological properties; (ii) quantify the architecture of soil pores using X-ray computed tomography (CT) for soils managed under long-term ICLS, native grazed pasture and corn-soybean …

Characterization And Effects Of Systemic And Ovarian Gnrh In Beef Cattle, Jerica J. J. Rich

Electronic Theses and Dissertations

Previous studies evaluating single and multiple GnRH injections at time of CIDR removal/prostaglandin injection using the 7-day CO-Synch + CIDR protocol have reported decreased interval to estrus and increased expression of estrus, or increased conception rates, respectively. Thus, the objective of experiment 1 (Chapter 3) was to compare the effects of supplementing GnRH at prostaglandin injection on expression of estrus and conception rates in beef cows and heifers synchronized with different protocols. The objective was conducted in two parts, in study 1, Beef cows (n = 161) and heifers (n = 1803) from 16 herds over three years were synchronized …

Enhanced Beta (Β) Glucan Beverages – Evaluation Of Satiety, Nutrition, And Shelf Stability, Beatrice Serwaa Manu

Electronic Theses and Dissertations

Oats and barley are unique cereals owing to their nutritional and health benefits. Soluble dietary fiber components, especially β-glucan found in both grains, have been associated with the reduction of cholesterol, normalization of blood sugar levels and suppression of hunger. These nutritional and therapeutic attributes are ideal for production of novel and more diversified food products from these cereals. β-glucan, however, imparts high viscosity in food systems particularly in high moisture foods, thus impairing their sensory characteristics. Reduced viscosity oat-barley beverages, using partial enzyme and acid hydrolysis, may fill a void in the market segment and yet serve as effective …

Antidiabetic Activity Of Cissus Rotundifolia Plant Growing In Saudi Arabia, Saad Ali Alshehri

Electronic Theses and Dissertations

Diabetes mellitus (DM) is a metabolic disease characterized by high levels of blood glucose resulting from defects in insulin production or action. A world-wide increase in the diabetes rate is projected to reach pandemic levels over the next 10-20 years. Current data shows that high numbers of the population in Saudi Arabia suffer from diabetes and prediabetes. Non-traditional treatments of diabetes from medicinal plants has shown potential antidiabetic activity. A considerable percentage of the population still prefer or use medicinal plants as a treatment or supplement to traditional medicine. Cissus rotundifolia (family Vitaceae) is a known plant in southwestern Saudi …

Effect Of Soy Lecithin Concentration On Formulating Dairy Emulsions Through Ultrasound Treatment, Collette Kernyuy Nyuydze

Electronic Theses and Dissertations

The ability of high intensity ultrasound to produce stable emulsions without the addition of surfactant was evaluated in a dairy-based formulation. The formulation consisted of protein (4.33 ± 0.05%, whey protein concentrates (WPC80), carbohydrates (21.52 ± 0.75%, sucrose and maltodextrin), oil (2.90 ± 0.05%, soybean oil), and surfactant (0-.05%). Pre-emulsions formulated with either 0, 0.025, and 0.05% of soy lecithin were treated for 5 min at an acoustic intensity of either 42.58 ± 2.98, 56.83 ± 3.01, or 70.48 ± 2.97 W cm^-2. The stability of the emulsions was evaluated through particle size, dynamic rheology, gel electrophoresis, and …

Factors Influencing Adoption And Adoption Intensity Of Precision Agriculture Technologies In South Dakota, Md Mahi Uddin

Electronic Theses and Dissertations

Precision agriculture can play an important role in preserving the environment and improving the economic conditions of agricultural producers. This thesis analyzes the determinants of adoption and adoption intensity of precision agriculture technologies in South Dakota. This analysis uses survey data collected from 199 farms distributed over 28 different counties in South Dakota, accounting for approximately 500,000 acres of tillable agricultural land, to (1) discover the factors impacting precision technology adoption; (2) compare and contrast several characteristics among adopters and non-adopters; and (3) develop probit, count, and negative binomial models to determine the significance of explanatory variables impacting precision technology …

Valorization Studies On Ice-Cream Wastewater And Whey Permeate, Maryam Enteshari

Electronic Theses and Dissertations

Ever growing demand for dairy products in many countries has led to advancements in the manufacture of such products. Nowadays, revolutionary trends for high-protein dairy foods and drinks products have brought about new challenges from processing requirements and manufacturing aspects. Using different membrane processing has enabled dairy manufacturers to produce different fraction of milk proteins such as micellar caseins, ultra-filtered (UF) milk proteins, whey proteins concentrate (WPC), and micellar casein concentrate (MCC) to meet the nutritional needs with variety of milk product options. However, the installation of new processing lines and establishing further manufacturing steps requires more consumption of water …

Utilizing Rhizospheric And Bacterial Endophytes For Use As Potential Bio-Fertilizers For Sustainable Agricultural Production, Vincent Peta

Electronic Theses and Dissertations

Brassica carinata crop production offers an exciting alternative approach to the energy crisis when looking at novel ways to power our motor vehicles. Bacterial endophytes, while residing in host-plant tissues, offer a wide array of plant growth promotion benefits such as nitrogen fixation to impart nitrogen (N) nutrition, phosphate (P) solubilization to make soil-bound phosphate more mobile in soil for plant uptake, can suppress pathogenic microbes such as fungus and produce plant growth hormones to offset stress incurred by the plant. Previous literature has shown that there is large interest in studying endophytes from economically important crops such as wheat, …

Epitope Mapping And Mechanisms Of Action Of Human Influenza Antibodies Derived From Transchromosomic Cattle, Rongyuan Gao

Electronic Theses and Dissertations

Influenza remains a global health risk and challenge. Currently, NA inhibitors are extensively used to treat influenza, but their efficacy is compromised by the emergence of drug resistant variants. Antibodies targeting influenza A virus surface glycoproteins are critical components of influenza therapeutic agents and may provide alternative strategies to the existing countermeasures. This study characterized both polyclonal and monoclonal antibodies produced from the transchromosomic (Tc) cattle platform. A polyclonal antibody, designated SAB-100, was generated from Tc cattle after immunized with H1N1,H3N2, and influenza B virus. The peptide-based Enzyme-linked immunosorbent assay shows that the polyclonal antibody recognizes three distinct epitopes, one …

Quantitative Imaging Of Cell-Level Auxin Cytokinin Outputs In Soybean And Model Plants, Paul Gaillard

Electronic Theses and Dissertations

Auxin and cytokinin are major plant hormones that orchestrate plant development. These hormones are involved in cell division and differentiation and their spatio‐temporal balance controls organ initiation and maturation. Even though independent transcriptional responses to these hormones have been characterized, their concomitant outputs have not been described. We developed methodology to determine auxin-cytokinin relative output (ACRO) ratios at cellular resolution. Hormone-specific fluorescent markers that localize to the nucleus were used to report transcriptional outputs of auxin and cytokinin. Multiphoton microscopy and image data processing were used to quantify their relative ratio at cellular level in three-dimensional tissue volumes. This strategy …

Epidemiological Investigations Of Bighorn Sheep Respiratory Disease And Implications For Management, Brandi L. Felts

Electronic Theses and Dissertations

Infectious respiratory disease has long been identified as the cause of bighorn sheep (Ovis canadensis) historical declines and extirpations, and Mycoplasma ovipneumoniae (Movi) is the primary pathogen inducing disease and mortality. Population-level effects of pneumonia events range from mild to extirpation. Variable individual response to pathogen exposure emerges from dynamic interactions between competing evolutionary processes within the host and pathogen. Understanding impacts of this evolutionary warfare is essential to assessing long-term impacts of pathogen invasion and developing appropriate countermeasures to protect population health. Freeranging populations are faced with spillover infections from domestic sheep and goats as well as …

Applications Of Hydrodynamic Cavitation In Dairy Manufacturing: Process Development And Standardization, Jae Young Sim

Electronic Theses and Dissertations

The phenomenon of hydrodynamic cavitation involves the formation, growth, and subsequent collapse of bubbles when a given liquid experienced a reduction of pressure below its vapor pressure. The presence of cavitation limits the performance and the safe operation of many machinery and pumps. However, innovation in the design of the hydrodynamic cavitation devices has offered promising applications in the food and dairy industry. Upon collapse of the cavities, the fluid experiences significant mechanical effects (shear and turbulence) as well as instantaneously elevation of the fluid temperature. All these effects can be put to work for mixing, dispersion, particle size reduction, …

Development Of Cellulose Acetate-Based Scaffold For Bone Tissue Engineering Applications, Ruhit Sinha

Electronic Theses and Dissertations

Cellulose Acetate (CA) based biomaterials are being used as substrates for bone ingrowth applications due to their nontoxic and nonirritant nature coupled with optimum morphology and stiffness. Electrospinning with additives and/or post-treatment has emerged as a viable protocol to further improve mechanical properties of CA and expand its utility. Herein, we highlight the role of potassium chloride (KCl) in association with airdrying to enhance the elastic modulus and tensile strengths of CA fibers. Salt aggregation in between fibers is observed through Scanning Electron Microscopy (SEM), however, Fourier-transform infrared (FTIR) analysis signifies the interactions between K+ ions and acetyl groups. The …

Small Rnas: Big Roles In White Mold Infecting Crop Plants, Achal Neupane

Electronic Theses and Dissertations

In eukaryotes, small RNAs (sRNAs) are key regulators of RNA silencing which is also known as RNA interference (RNAi). RNAi is an essential mechanism known in plants, animals and fungi that regulates various biological activities, including defense against foreign nucleic acids and viruses. Fungal pathogens, such as Sclerotinia sclerotiorum, severely limit crop production in all parts of the world. Sclerotinia sclerotiorum cause white mold infection, affecting all dicotyledonous plants including many economically important field crops, vegetables, and floriculture. There does not exist known host resistance, and only limited chemical control can be achieved. Given the growing cost and environmental impacts …

Biomass And Morphological Development Of Miscanthus Compared With Native Grass In South Dakota, Ehsan J. Al Ainizi

Electronic Theses and Dissertations

Little is known about Miscanthus for bioenergy in the northern Great Plains. This study compared 10-year-old stands of Miscanthus x giganteus to switchgrass (Panicum virgatum L.) and prairie cordgrass (Spartina pectinata Link) for biomass on marginal cropland in eastern South Dakota. This study was conducted during 2017 and 2018 at Brookings, SD. Day of year (DOY), species, and N fertility were evaluated for effects on biomass yield and related components (tillers m-2, plant height, and weed biomass). All three variables had significant effects on biomass yield, tiller m-2, and tiller height in both years. N rate had no effect on …

Public Rights After Oil States Energy, Adam J. Macleod

Faculty Articles

The concept of public rights plays an important role in the jurisprudence of the Supreme Court of the United States. But as the decision in Oil States last Term revealed, the Court has often used the term to refer to three different concepts with different jurisprudential implications. Using insights drawn from historical and analytical jurisprudence, this Article distinguishes the three concepts and examines how each of them is at work in patent law. A precise reading of Oil States also bears lessons for other areas of law that implicate both private rights and duties and the administration of public regulatory …

Theodramatic Themes And Showtime In Nassim Soleimanpour’S White Rabbit Red Rabbit, Charles A. Gillespie

Catholic Studies Faculty Publications

This essay engages the experimental playwright Nassim Soleimanpour’s White Rabbit Red Rabbit alongside the theological dramatic theory of Hans Urs von Balthasar. Every Soleimanpour play can only happen once. Actors receive the script as they begin the show; any given actor must perform Soleimanpour’s drama as a cold reading unique in history. I propose “Showtime” to theorize this theatrical temporality, exemplified by White Rabbit Red Rabbit and shared by von Balthasar’s theology, on analogy to stage space. This article further examines the play’s themes of identity, self-sacrifice, free obedience, and writing about time through a “theodramatic structural analysis” keyed to …

Effectiveness Of Instructor-Led Discussion Versus Simulation To Prepare Students For Fieldwork, Elena W. Espiritu, Thu M. Can, Natalie N. Michaels, Allison Koch, Beth F. Hallmark

Journal of Occupational Therapy Education

Occupational therapy students do not always feel prepared to start fieldwork. The study purposes were to 1) measure the effectiveness of refresher sessions on students’ perceived self-efficacy, knowledge, and skills related to fieldwork preparedness and 2) determine whether using simulation with standardized patients (SPs) was more effective than a discussion-based format. The participants (N=34) were entry-level occupational therapy doctoral (OTD) students. Four students acted as a control group while the remaining 30 students were randomly assigned to experimental groups (discussion or simulation). Outcome measures included a readiness for fieldwork survey (quantitative self-reported ratings and qualitative questions), a knowledge-based exam, and …

New Labor Viscerality? Work Stoppages In The "New Work" Non-Union Economy, Michael C. Duff

Saint Louis University Law Journal

COVID-19 work stoppages involving employees refusing to work because they are fearful of contracting coronavirus provide a recent dramatic opportunity for newer workplace law observers to grasp a well-established legal rule: both unionized and non-union employees possess rights to engage in work stoppages under the National Labor Relations Act (“NLRA”). This article explains that employees engaging in concerted work stoppages, in good faith reaction to health and safety dangers, are prima facie protected from discharge. The article carefully distinguishes between NLRA § 7 and § 502 work stoppages. Crucially, and contrary to § 502 work stoppages, the health and safety-related …

Remember That Party Last Night? Examining The Effects Of Binge-Like Alcohol On Memory, Anna Thomas

Undergraduate Honors Thesis Collection

Alcohol is a widely available drug that is often abused. Studies have shown alcohol-induced memory loss in humans and animals; however, the large amount of alcohol often necessary to observe such loss and use of involuntary drinking paradigms in animals makes translation difficult. The current study was designed to look at voluntary binge-like drinking behavior and memory in rodents. We anticipated decreases in working memory function following consumption of binge-like alcohol in mice and expected a greater deficit in mice experiencing acute withdrawal during the memory task. The present study explored drinking behaviors in adult C57BL/6J mice (18 male, 18 …