Digital Commons Network^™

Effect Of Tannin In Animal Diet On Nitrification Rate Of Pasture Soil Under Dung Patches, J R. Crush

IGC Proceedings (1977-2023)

The rate of formation of nitrate and ammonium in the soil under dung patches was compared for dung from animals fed either ryegrass (Lolium perenne)/white clover (Trifolium repens) or ryegrass/Lotus pedunculatus forage. Tannin derived from the Lotus did not inhibit ammonification in the soil under dung but nitrate formation was strongly inhibited. The results support the theory that polyphenolics may bind to nitrite in acid soils and cause immobilisation of mineral nitrogen. Apart from their effect of reducing the proportion of dietary nitrogen excreted in urine, tannins in animal diets may make a further contribution to …

Condensed Tannins In Tropical Legumes: Concentration, Astringency And Effects On The Nutrition Of Ruminants, R Barahona, C E. Lascano, R C. Cochran, J L. Morrill, E C. Titgemeyer

IGC Proceedings (1977-2023)

A feeding trial was carried out to determine the effect of extractable condensed tannins (ECT) concentration and tannin astringency in tropical legumes on nitrogen (N) digestion by sheep. Test legumes were Desmodium ovalifolium (Do) and Flemingia macrophylla (Fm) which had similar concentrations of Extractable CT (9% DM) but tannins with different degree of astringency (Do, 0.6 and Fm, 0.3 g protein bound/g of ECT). Chopped sun-dried forage of each legume was sprayed with either water (control) or polyethylene glycol (PEG, 3.5% DM) to reduce ECT and fed to 8 sheep with ruminal and duodenal canulas arranged in a replicated 4 …

Effect Of Condensed Tannin In Lotus Corniculatus And Lotus Pedunculatus On Digestion Of Rubisco In The Rumen, W C. Mcnabb, R J. Aerts, A Brand, J S. Peters, Y L. Foo, G C. Waghorn

IGC Proceedings (1977-2023)

The in vitro precipitation of ribulose-1,5-bisphosphate carboxylase (Rubisco) by condensed tannin (CT) extracted from Lotus corniculatus and Lotus pedunculatus and the effect of these CT on the in vitro rumen degradation of Rubisco was used to compare the reactivity of these CT. The chemical structure of CT from Lotus corniculatus was homogenous with epicatechin stereochemistry and mostly procyanidin units. The CT from Lotus pedunculatus was heterogenous with mostly prodelphinidin units. The amount of CT required to precipitate all the Rubisco when total soluble leaf protein was incubated with CT from Lotus corniculatus and Lotus pedunculatus was similar. Although CT from …

Nitrogen And Fiber Digestion In Sheep Fed Fresh-Frozen And Field-Dried High And Low Tannin Sericea Lespedeza, T H. Terrill, W R. Windham, C S. Hoveland, H E. Amos, B Kouakou, S Gelaye

IGC Proceedings (1977-2023)

Field-drying reduces extractable condensed tannin (CT) of sericea lespedeza [Lespedeza cuneata (Dum-Cours) G. Don], but effects on specific bound and unbound forms of CT and the relationship to protein and fiber digestion in ruminants are unclear. Intake and digestibility of fresh-frozen and field-dried high- and low-tannin sericea were investigated in a feeding trial with sheep (Ovis spp.). Field-drying had no effect on crude protein (CP) and fiber content of sericea, but shifted CT from extractable to bound forms. Digestion coefficients for CP, neutral detergent fiber (NDF), and acid detergent fiber (ADF) were lower for high-tannin sericea than the low-tannin …

Alteration Of Condensed Tannin Sythesis In Transgenic Forage Legumes, F Paolocci, G Tanner, S Arcioni, F Damiani

IGC Proceedings (1977-2023)

The transformation of Lotus corniculatus plants with the maize gene Sn, reorganizes the tissue specificity of condensed tannins accumulation. In particular the transformed plants show an increase of tannin content in roots and a decrease in leaves. Molecular and enzymatic analyses suggest that the transgene can functionally substitute an endogenous unknown gene not expressed in roots and induces its silencing when it is expressed. These findings could have applications for reducing tannin content in unpalatable plants and for cloning genes involved in tannin synthesis.

Comparison Of The In Vitro Fermentation Characteristic Of Fractionated Alfalfa And Sainfoin, L R. Mcmahon, M Goto, T A. Mcallister, G A. Jones, K J. Cheng

IGC Proceedings (1977-2023)

Alfalfa and sainfoin leaves were lyophilized and ground (A, S, respectively) or were fractionated into soluble (A_SOL, S_SOL) and insoluble (A_INS, S_INS)components and lyophilized and incubated in vitro with diluted ruminal fluid for 24h. Whole leaf and soluble fractions were also incubated with polyethylene glycol 8000 (PEG). Gas production (GP), ammonia concentration [NH3] and volatile fatty acid (VFA) production were lower (P< 0.05) from S and SSOL than from A and ASOL Insoluble fractions differed only in [NH3] (SINS < AINS, P < 0.05). Inclusion of PEG increased (P < 0.05) GP, [NH3] and VFA production from whole leaf and soluble fractions of sainfoin, but not alfalfa. Inactivating the condensed tannins in sainfoin with PEG overcame differences in degradability between these two forages.

Differences In Chemical Composition Among Provenances Of Tree Fodder Species In A Subhumid Environment: Relation To Use As Supplements, B H. Dzowela, L Hove, P L. Mafongoya

IGC Proceedings (1977-2023)

Studies were initiated in a subhumid Southern African environment to assess the chemical composition and nutritive value of Acacia angustissima (Mill.) Kuntze, Calliandra calothyrsus Meiss. and Leucaena species. The objective was to determine variability in crude protein (CP) concentration, acid detergent fibre (ADF), neutral detergent fibre (NDF), and soluble and insoluble proanthocyanidins from fodder samples of species, subspecies and provenances. A wide range was found in these parameters. The implications of these chemical composition factors, especially proanthocyanidins, on the use of these browse fodders in livestock feeding systems are discussed.

Nutritional Implications Of Bound Proanthocyanidins, H P.S Makkar, K Becker

IGC Proceedings (1977-2023)

The correlation between protein binding capacity of proanthocyanidin-rich neutral detergent fiber (NDF) and their proanthocyanidin (PAs) content was very low (r = -0.21; n = 6). These PAs-rich NDF did not affect growth of a tannin-sensitive strain of Clostridium perfringens. A substantial amount of bound PAs (75 to 92 %) disappeared from the NDF in 24 h of fermentation in an in vitro incubation medium containing rumen microbes. Addition of a tannin-binding agent, polyethylene glycol to the incubation medium containing rumen microbes and browses made free of extractable tannins or NDF rich in bound PAs increased the gas production up …

Environmental Effect On New Released Genotypes Of Graminaceous And Leguminous Forage Perennial Crops, P Martiniello, G Genier, R Allerit

IGC Proceedings (1977-2023)

Genotypes of perennial leguminous (alfalfa) and graminaceous (cocksfoot and tall fescue) were evaluated for adaptability in a typical Mediterranean environment (Foggia, southern Italy). The species were field evaluated to detect biomass yield potential under different types of watering. Irrigations were applied considering rainfall and FAO cultural growth coefficient for reintegrating the 75% of the evaporated water from Class A water pan. The forage harvest was applied when the shoots of the varieties reached the 10 and 50% of flowering and heading stage for leguminous and graminaceous, respectively. A split-plot experimental design, with irrigation in the main plot, was adopted. The …

Plant Tannins- Their Role In Forage Legume Quality, J A. Alokan, V A. Aletor

IGC Proceedings (1977-2023)

Forage legumes, especially browse plants, are important in the maintenance and survival of ruminant animals. However many browse species contain high levels of polyphenolic compounds including tannins. The effects of tannins on the quality of forages are reviewed. These include reduction in palatability and intake of feeds, growth rate, digestion of fibre fractions and nitrogen utilization by animals.

Genetic Manipulation Of Sainfoin Leaf Tannins, M Y. Gruber, P Auser, G Lees, A D. Muir, M Wood

IGC Proceedings (1977-2023)

An isogenic population of sainfoin (Onobrychis viciifolia Scop.) plants was developed by two methods; regeneration after long term tissue culture and plant transformation with an antisense chalcone synthase gene. Tannin (proanthocyanidin) content could be dramatically increased in untransformed callus by long term culture, but was not significantly altered in regenerating plantlets. Some of the mature transgenic plants had dramatically reduced levels of leaf tannin. The antisense gene was eliminated from all transgenic plants later in development.

Induction Of Mutants With Ectopic Expression Of Condensed Tannins, M Y. Gruber, B Skadhauge, P Auser, A D. Muir, K K. Thomsen, J Stougaard, B Coulman, D Von Wettstein

IGC Proceedings (1977-2023)

Leaves of 47,000 Lotus japonicus plants were screened using a butanol:HCl histochemical test to select “gain of function” mutants. These plants were progeny from L. japonicus lines which were transformed with T-DNA constructs containing either the maize Ds or Ac transposon (Thykjaer et al., 1995). Among 21 putative leaf tannin mutants, five (tan1-5) were characterized for synthesis of condensed tannins, leucocyanidin reductase activity and the presence of Ac and the selectable marker gene, nptII . A range of leaf tannin content among other Lotus species was also characterized.

A Revised Method Of Condensed Tannin Analysis In Leucaena Spp., S A. Dalzell, G L. Kerven

IGC Proceedings (1977-2023)

The proanthocyanidin (butanol-HCl) assay was used to measure condensed tannin (CT) in extracts from Leucaena spp. at the University of Queensland. Inconsistent results were found to be caused by the iron catalyst in the butanol/HCl reagent and the presence of ascorbic acid in the sample matrix which enhanced anthocyanidin development. In addition, preparation of sample extracts by back extraction with organic solvents reduced CT recoveries. An accurate and rapid technique was developed that measures CT directly in 70% aqueous acetone 0.1% (w/v) sodium metabisulphite plant extracts.

The Effect Of Condensed Tannins In Lotus Spp. On The Lesser Migratory Grasshopper, C F. Hinks, G L. Lees, M Y. Gruber, A D. Muir, J Soroka

IGC Proceedings (1977-2023)

Hatchling grasshoppers (Melanoplus sanguinipes Fab.) fed one accession of field grown big trefoil (Lotus uliginosis Schkuhr) containing a tannin content of 56 mg. g-1 FW, had a significantly lower mean weight than hatchlings fed field grown Lotus species and accessions with lower tannin content. Adult female grasshoppers fed L. uliginosis foliage with 32.3 mg.g-1 FW tannin also ate more feed and had a 2-fold higher gut trypsin and chymotrypsin activity than adults fed low tannin L. corniculatus foliage (0.13 mg.g-1 FW tannin). In more controlled experiments, growth at 20o C or 30o C was used to increase tannin …

Research Week 2024 Program, Research Week

Liberty University Research Week

Research Week 2024 complete schedule.

Building Neuro-Inclusive Community, Strengthening Mental Health: The Autism After 21 Utah Project, Sumiko T. Martinez, Anna Smyth, Ann C. Carrick

Developmental Disabilities Network Journal

Over two decades of research shows strong positive relationships are a consistently powerful indicator of wellbeing and resilience. However, the U.S. Surgeon General notes that loneliness and isolation is an epidemic in the U.S., and that it is exacerbated for individuals with physical and mental disabilities as well as those with isolating economic or environmental situations. A recent review shows that many autistic adults in particular face challenges in finding the connections they want and need. They also often have compounding mental health conditions, such as depression and mental illness, lower incomes, isolating home environments due to a lack of …

The Vulnerabilities Of Artificial Intelligence Models And Potential Defenses, Felix Iov

Cybersecurity Undergraduate Research Showcase

The rapid integration of artificial intelligence (AI) into various commercial products has raised concerns about the security risks posed by adversarial attacks. These attacks manipulate input data to disrupt the functioning of AI models, potentially leading to severe consequences such as self-driving car crashes, financial losses, or data breaches. We will explore neural networks, their weaknesses, and potential defenses. We will discuss adversarial attacks including data poisoning, backdoor attacks, evasion attacks, and prompt injection. Then, we will explore defense strategies such as data protection, input sanitization, and adversarial training. By understanding how adversarial attacks work and the defenses against them, …

Addicted To The Beloved? A Comparison Of Craving For And Attention To Beloved And Vape Stimuli, Caitlyn Harriman

Theses

People who are in love seem to be addicted to their beloved. People who are in love have attentional biases for the beloved and people who are addicted have attentional biases for the substance they are using. This raises the question of how similar craving and attention are for the beloved and an addictive substance. However, there are no studies that directly compared craving and attention to the beloved and addictive stimuli. The aims of the current research were to directly compare subjective emotional experiences, sustained motivated attention, and early automatic attention for the beloved and vape stimuli, in people …

Climate Zoning, Christopher Serkin

Notre Dame Law Review

As the urgency of the climate crisis becomes increasingly apparent, many local governments are adopting land use regulations aimed at minimizing greenhouse gas (GHG) emissions. The emerging approaches call for loosening zoning restrictions to unlock greater density and for strict new green building codes. This Article argues that both approaches are appropriate in some places but not in others. Not all density is created equal, and compact multifamily housing at the urban fringe may actually in-crease GHG emissions. Moreover, where density is appropriate, deregulation will not necessarily produce it. And, finally, green building codes will increase housing costs and so …

Narratives Of Exile: Themes Of Displacement In Seghers, Duras, And Elio, Erin Consla

Foreign Languages & Literatures ETDs

This thesis examines identity, memory, and displacement in the exile narratives of Anna Seghers, Marguerite Duras, and María Luisa Elío. I argue that identity post-exile can be conceptualized as a continuous process of becoming, marked by a kaleidoscope of past, present, and future. Several aesthetic maneuvers such as the use of elements of form, memories of childhood, and palimpsest are shared by the chosen narratives, resulting in similar negotiations with identity. Through analysis of the authors' aesthetic focalizations, it becomes clear that their binary subject positions are modulated by the liminality and contradictions inherent in identity creation after exile. The …

Critical Faith: What It Is, What It Isn't & Why It Matters [Chapter 1], Joni Schwartz

Publications and Research

Near hysteria has erupted in the media, state and federal legislatures, community boards, and churches around critical race theory (CRT). Despite the term's history, development, and clearly defined meaning, it has become a catch-all for white America's fears, deflections, and equivocations on race, society, and the law. Christians are no exception. Their critiques routinely claim that CRT is rewriting of American history, that it is anti-democratic, and even heretical.

Critical Faith presents a counter argument to these claims and insists that CRT is a tool to grapple with the thorny issue of race in both society and the church. In …

Unravelling The Genetic Basis Of Schizophrenia, Clara Casey, John F. Fullard, Roy D. Sleator

Department of Biological Sciences Publications

Neuronal development is a highly regulated mechanism that is central to organismal function in animals. In humans, disruptions to this process can lead to a range of neurodevelopmental phenotypes, including Schizophrenia (SCZ). SCZ has a significant genetic component, whereby an individual with an SCZ affected family member is eight times more likely to develop the disease than someone with no family history of SCZ. By examining a combination of genomic, transcriptomic and epigenomic datasets, large-scale ‘omics’ studies aim to delineate the relationship between genetic variation and abnormal cellular activity in the SCZ brain. Herein, we provide a brief overview of …

Occupational Therapy's Role In Improving Self-Regulation In Classrooms, Holly Huggins, Elizabeth Hunter, Cayce Nance

MOT Student Capstones

Self-regulation is essential to elementary students' academic success. Students' ability to manage their behaviors and develop a sense of self-awareness can positively impact their school engagement and performance. School-based occupational therapy practitioners (OTP) can collaborate with teachers and relevant staff to improve classroom behaviors by implementing self-regulation strategies and modifications through the multi-tiered systems of support (MTSS). An educational presentation was developed and presented to teachers and support staff to increase their understanding and knowledge of applying self-regulation strategies in the classroom. The objectives of the presentation were to educate on the role of occupational therapy (OT) in the school …

Occupational Therapy's Role In Addressing Health Disparities In Transgender/ Gender Diverse Youth, Samantha Ryan

MOT Student Capstones

This study investigated the effectiveness of an educational module in improving occupational therapists' knowledge and skills regarding transgender and gender diverse (TGD) youth. The research builds upon existing literature demonstrating positive outcomes when integrating TGD population needs into healthcare education programs. The study employs a pre-test/post-test design to assess participants' understanding of critical areas, including culturally affirming care, legal and ethical considerations, social determinants of health and health disparities, developmental stages related to gender identity, and safety considerations for TGD youth. Participant< ; who completed the module demonstrated significant improvements in several key areas. They displayed a firmer grasp of culturally affirming care principles and how to 4 implement them in practice. Additionally, their understanding of legal and ethical considerations surrounding TGD healthcare provision deepened. The study also revealed increased knowledge of social determinants of health and the impact of TGD identities on access to equitable healthcare. Participants better understood how developmental stages relate to gender identity and its influence on occupational engagement. Finally, they demonstrated increased knowledge of safety considerations and protective factors for TGD youth in occupational therapy settings. Findings reveal measurable improvements in participants' knowledge and ability to deliver affirming occupational therapy for TGD youth. The results suggest that the educational module promotes culturally competent and ethical care. Furthermore, these findings suggest that integrating TOD-specific education into occupational therapy curricula can significantly enhance practitioners' ability to provide affirming and effective care for TGD youth.

Riding For Recovery: The Impact Of Hippotherapy For Adults With Intellectual Developmental Disabilities, Kesti Suggs

MOT Student Capstones

This capstone project focuses on the underutilization of hippotherapy in occupational therapy (OT) for adults with intellectual and developmental disabilities (IDD). In OT, the horse's movement enhances motor skills, coordination, balance, focus, sensory integration, and functional performance in everyday tasks. This approach simultaneously addresses sensory processing, including the vestibular, proprioceptive, tactile, visual, and auditory systems. The objective of the capstone project is to emphasize the importance of utilizing hippotherapy as an evidence-based therapeutic intervention for adults with IDD. Increasing awareness about integrating hippotherapy into occupational therapy environments, particularly outpatient clinics, is the second objective of this capstone project. The goal …

Rollins Oral History Interview With Bruce Stephenson, Bruce Stephenson, Wenxian Zhang

Oral Histories

Bruce Stephenson earned a BA in history from Florida Southern College and a Master in city planning from Ohio State University.  He worked as land use planner for Pinellas County, Florida before receiving a PhD from Emory University.  His dissertation unveiled John Nolen’s 1923 plan for St. Petersburg, Florida’s first comprehensive city plan, and centered Stephenson's first book, Visions of Eden.

Dr. Stephenson started his teaching career at Rollins in 1988 and served as a professor in Environmental Studies for more than 35 years. His second book, John Nolen, Landscape Architect and City Planner, earned the JB Jackson …

Gardner-Webb Sigma Zeta National Honor Society Inducts New Members, Office Of University Communications

Gardner-Webb NewsCenter Archive

The Beta Tau Chapter of Sigma Zeta National Honor Society held its induction ceremony in March. Nineteen students were recognized as new members, and the new officers were installed. Graduating seniors were also recognized.

Development Of Zr(Iv) Mof-Enabled Nerve Agent Electrochemical Hydrolysis Sensors, Tyler James Marlar

Theses and Dissertations

Nerve agents are acetylcholinesterase inhibitors and among the most toxic chemical warfare agents ever synthesized. Detection of these chemicals is critical for the protection of populations and strategic resources. G-series nerve agents are volatile compounds. V-series nerve agents are persistent phosphonothioate compounds. Persistent nerve agents do not readily volatilize and can contaminate environmental resources for extended periods. While nerve agents are inherently non-electroactive, they can be hydrolyzed to electroactive products compatible with electrochemical sensing. Zr(IV) MOFs are next-generation nanoporous materials, which have been shown to rapidly catalyze nerve agent hydrolysis. In this work, the catalytic processes of MOF-808, a specific …

Developing An Artistic Self In Preservice Elementary Teachers: A Studio Art Curriculum To Promote Art Integration, Karilee D. Park

Theses and Dissertations

With the continual use of standardized testing, teaching art in schools, particularly elementary schools, often falls to generalist teachers with little to no experience in art. While art can be integrated into daily curriculum for deeper and lasting learning, without the proper training or support, generalist teachers are left to implement art as they encountered it in the past, if at all. Artistic anxiety and culturally misappropriated artistic experiences result in the arts being used inefficiently or avoided completely. Creating a curriculum for preservice elementary generalist teachers, I explored art integration through developing artistic confidence, skill, and identity for 16 …

A New Nature Is Coming. We Will Be Repossessed, And The Spectres Of The Post-Natural Will Take The World. Predictions Of A New Symbiotic Earth In "Fafner" (2018) By Daniel Perez Navarro, Miguel Angel Albújar-Escuredo

Alambique. Revista académica de ciencia ficción y fantasía / Jornal acadêmico de ficção científica e fantasía

This paper engages in the debates about decentralizing the role of men in the world we live in. Byproducts of this new mindset are concepts such as the “Posthuman” (Braidotti 2012); the status of “Holobiont” (Haraway 2016), and the experiencing of a new “Coexistence” with the non-human (Morton 2018). I suggest the novel Fafner (2018) as a perfect sample of this intellectual debate from an artistic and fictional view. Using concepts from diverse fields of thinking and applying them to literary analysis, this paper will review the in-depth transformation of nature portrayed by Fafner’s narration. Additionally, it will accomplish …