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Articles 2041 - 2070 of 74433
Full-Text Articles in Entire DC Network
One-Class Modeling For The Authentication Of Actaea Racemosa And Evaluation Of The Variation Between Botanical Reference Materials, James Harnly
Oxford ICSB
One-class modeling based on soft independent modeling of class analogy (SIMCA) is a simple but powerful method for comparing the chemical composition of botanical materials using non-targeted chromatograms (GC, LC) or spectra (IR, MS, NIR, NMR). The methodology is available on any commercial chemometric platform. Authentication is based solely on the characteristics of the botanical material of interest. Detection of adulteration is determined for each variable and requires no identification of adulterants. Some highly characterized botanical reference materials (BRMs) may account for species, cultivar, and year and location of harvest while more generic BRMs may have minimal characterization. All of …
A Theoretical Framework To Enhance Healthcare Utilization Among International Students In The United States, Oyebolu Aderinola Akinkugbe
A Theoretical Framework To Enhance Healthcare Utilization Among International Students In The United States, Oyebolu Aderinola Akinkugbe
Liberty University Research Week
Many international students in the United States do not fully utilize healthcare on their respective campuses. Various factors at multiple levels influence healthcare utilization among international students. With a continual influx of international students to the USA, comprehending and remedying these influences is crucial for fostering the health and welfare of this demographic group. This study aims to use the socio-ecological framework to enhance healthcare utilization among international students in the United States. At the individual level, healthcare-seeking behaviors are influenced by health literacy, cultural beliefs, language proficiency, and financial constraints. Interpersonal dynamics, including social networks, peer support, and family …
Are Elementary Reading Specialists Prepared To Address The Mental Health Needs Of Struggling Readers?, Virginia Shank
Are Elementary Reading Specialists Prepared To Address The Mental Health Needs Of Struggling Readers?, Virginia Shank
Liberty University Research Week
A review of the literature confirms an increase in mental health needs among students in American classrooms and around the world (Duong et al., 2020; Firestone & Cruz, 2022). The COVID-19 pandemic and 2020 school closures exacerbated this trend and students need emotional support at school (Bhogal et al., 2021; Firestone & Cruz, 2022; Ma et al., 2021). Although educators are in positions to notice signs of depression and anxiety, reading specialists and classroom teachers typically have not been trained to screen for mental health issues or deliver mental health interventions (Brunelle et al., 2020; Firestone & Cruz, 2022; Sanchez …
A Brief Overview Of Health, Poverty, And Mental Health Concerns In American Indian/Alaska (Ai/An) Populations Native, Abbie Hopson
A Brief Overview Of Health, Poverty, And Mental Health Concerns In American Indian/Alaska (Ai/An) Populations Native, Abbie Hopson
Liberty University Research Week
American Indian and Alaska Native (AI/AN) populations consistently experience significant health disparities compared to other races and to the general population. The majority of the negative mental and physical health outcomes of this population are preventable. This study provides an overview of the health disparities faced by American Indians/Alaska Natives, outlines contributing social determinants, and suggests future directions for research and treatment. Primary focuses were identified from government and Native organizations, including census data, education reports, and other similar sources, and were explored more in-depth through a variety of studies from the fields of psychology, history, sociology, and anthropology. Initial …
Ai Propulsion Of Globalization, Aleksandra Drozd
Ai Propulsion Of Globalization, Aleksandra Drozd
Liberty University Research Week
The invention and continual growth of artificial intelligence (AI) on the global stage have significantly shaped the world’s economies, governments, societies and their cultures. The new industrial revolution and the subsequent race of the world’s leading powers have led to increased international joint efforts and exchange of information, simultaneously reducing barriers to trade and communication. Meanwhile, emerging technologies deploying AI have driven changes in human behavior and culture, and challenged the traditional nation-state model. Within the same time frame, the world stage has undergone profound transformations with a clear trend of globalization, the tightening of international relations and closer cooperation …
Gender Bias And Children’S Literature: Understanding Natural Gender Language And Grammatical Gender Language Within Gender Development, Kaleigh Smolinski
Gender Bias And Children’S Literature: Understanding Natural Gender Language And Grammatical Gender Language Within Gender Development, Kaleigh Smolinski
Liberty University Research Week
The purpose of this research is to understand how gender bias is developed through language. Gender is represented within the human language in different forms such as in nouns, verbs, and/or pronouns that represent female and/or male versions of certain words (DeFranza et al., 2020). Each language consists of a degree of gendered language which is grammatical gender language, natural gender language, a combination of grammatical gender and natural gender, and genderless language (Prewitt-Freilino et al., 2012). This quantitative content analysis approach aims to understand how gender biases are represented in children’s literature in both grammatical gender language and natural …
Botanical Education In The Us In The Post-Dshea Era (1994-2024), Loren Israelsen
Botanical Education In The Us In The Post-Dshea Era (1994-2024), Loren Israelsen
Oxford ICSB
No abstract provided.
Influence Of Low-Level Condensed Tannins Concentrations In Temperate Forages On Sheep Performace, F Montossi, F Liu, J Hodgson, S T. Morris, T N. Barry, D F. Risso
Influence Of Low-Level Condensed Tannins Concentrations In Temperate Forages On Sheep Performace, F Montossi, F Liu, J Hodgson, S T. Morris, T N. Barry, D F. Risso
IGC Proceedings (1997-2023)
Results from a series of six comparative lamb grazing trials with temperate forages are summarised, and compared with results from the literature. Condensed tannin (CT) concentrations in the diet ranged from 0.12% to 0.47% on a dry matter (DM) basis. Values were generally similar for Yorkshire fog (Holcus lanatus), perennial ryegrass (Lolium perenne) and annual ryegrass (L. multiflorum), each grown with white clover (Trifolium repens), in similar circumstances. Concentrations for tall fescue (Festuca arundinacea)/white clover pastures were relatively low, but may have been artefacts. Drenching with polyethylene glycol (PEG) to bind …
Tannin Contents Of Some Indigenous Browse Plants Of Botswana, A A. Aganga, C M. Tsopito, K M. Morake
Tannin Contents Of Some Indigenous Browse Plants Of Botswana, A A. Aganga, C M. Tsopito, K M. Morake
IGC Proceedings (1997-2023)
A study was carried out to evaluate the tannin content and crude protein degradation of leaves and twigs from indigenous browsable trees which provide feed for grazing livestock on natural rangelands of Botswana. These browses include the families Leguminosae (Acacias), Capparidaceae (Boscias), Combretaceae (Combretum) and Tiliaceae (Grewias). These were found to be of good nutritive value, with the leaves having a high content of crude protein (9 - 16%) and a wide range of dry matter digestibility (37 - 69.82%). The correlation between crude protein disappearance and tannin content was found to be negative (-0.582) and significant (P<0.05).
Effect Of Tannin In Animal Diet On Nitrification Rate Of Pasture Soil Under Dung Patches, J R. Crush
Effect Of Tannin In Animal Diet On Nitrification Rate Of Pasture Soil Under Dung Patches, J R. Crush
IGC Proceedings (1997-2023)
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
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 (1997-2023)
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
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 (1997-2023)
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
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 (1997-2023)
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
Alteration Of Condensed Tannin Sythesis In Transgenic Forage Legumes, F Paolocci, G Tanner, S Arcioni, F Damiani
IGC Proceedings (1997-2023)
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
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 (1997-2023)
Alfalfa and sainfoin leaves were lyophilized and ground (A, S, respectively) or were fractionated into soluble (ASOL, SSOL) and insoluble (AINS, SINS)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
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 (1997-2023)
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
Nutritional Implications Of Bound Proanthocyanidins, H P.S Makkar, K Becker
IGC Proceedings (1997-2023)
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
Environmental Effect On New Released Genotypes Of Graminaceous And Leguminous Forage Perennial Crops, P Martiniello, G Genier, R Allerit
IGC Proceedings (1997-2023)
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
Plant Tannins- Their Role In Forage Legume Quality, J A. Alokan, V A. Aletor
IGC Proceedings (1997-2023)
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
Genetic Manipulation Of Sainfoin Leaf Tannins, M Y. Gruber, P Auser, G Lees, A D. Muir, M Wood
IGC Proceedings (1997-2023)
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
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 (1997-2023)
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
A Revised Method Of Condensed Tannin Analysis In Leucaena Spp., S A. Dalzell, G L. Kerven
IGC Proceedings (1997-2023)
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
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 (1997-2023)
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 …
The Vulnerabilities Of Artificial Intelligence Models And Potential Defenses, Felix Iov
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, …
Predictive Ai Applications For Sar Cases In The Us Coast Guard, Joshua Nelson
Predictive Ai Applications For Sar Cases In The Us Coast Guard, Joshua Nelson
Cybersecurity Undergraduate Research Showcase
This paper explores the potential integration of predictive analytics AI into the United States Coast Guard's (USCG) Search and Rescue Optimal Planning System (SAROPS) for deep sea and nearshore search and rescue (SAR) operations. It begins by elucidating the concept of predictive analytics AI and its relevance in military applications, particularly in enhancing SAR procedures. The current state of SAROPS and its challenges, including complexity and accuracy issues, are outlined. By integrating predictive analytics AI into SAROPS, the paper argues for streamlined operations, reduced training burdens, and improved accuracy in locating drowning personnel. Drawing on insights from military AI applications …
Characterization Of Phase Transition Behavior In Vo2 Thin Films, Eric Min Myat
Characterization Of Phase Transition Behavior In Vo2 Thin Films, Eric Min Myat
John Wesley Powell Student Research Conference
Our goal is to characterize the phase transition behavior of vanadium dioxide (VO2) thin films, specifically focusing on the metal-insulator transition, through electrical resistance measurements. We will synthesize high-quality VO2 thin films using a sol-gel process to prepare precursor solutions, spin coating for uniform thin film deposition, and controlled annealing to tune the properties and phase transition behavior of VO2. The resistivity of the thin films will be measured using a four-point-probe technique, specifically the Van der Pauw method. This project aims to provide insights into the fundamental properties of VO2 thin films and contribute to the development of novel …
Narco Service Provisions In Tierra Caliente: La Familia Michoacana, Los Caballeros Templarios, And Los Zetas, Itzel Mendoza
Narco Service Provisions In Tierra Caliente: La Familia Michoacana, Los Caballeros Templarios, And Los Zetas, Itzel Mendoza
John Wesley Powell Student Research Conference
This article analyzes the mutual relationship of dependency between civil society and narco cartels in Tierra Caliente, focusing on civilian experiences in Michoacan, Guerrero and el Estado de México. This paper will examine the functions of La Familia Michoacana, Los Caballeros Templarios and Los Zetas through community service provisions and cartels’ governance. Additionally, socioeconomic factors of Tierra Caliente will be examined to determine which types of communities lend themselves to cartels to provide community provisions as I argue that socioeconomic factors drive cartels’ operations and behaviors.
Independent Reading In The High School Classroom: An Examination Of Students' Reading Behaviors And Perceptions, Emma Halfman
Independent Reading In The High School Classroom: An Examination Of Students' Reading Behaviors And Perceptions, Emma Halfman
John Wesley Powell Student Research Conference
Independent reading is a time wherein students are allowed to read self-selected materials on their own (Yoon, 2002). Federal research like that of the National Reading Panel Report (NRP), however, has suggested that such programs in schools do not have conclusive benefits for students. Given this context, some administrators, teachers, and parents often do not advocate for independent reading in the classroom. They prefer instead that class time be spent wisely. They prefer that the class time be focused on the instruction of skills/content that matter to students and that align with state and national standards and assessments. With such …
Social Media Influence On Infant Safe Sleep A Tiktok Study, Peyton Kumpula
Social Media Influence On Infant Safe Sleep A Tiktok Study, Peyton Kumpula
John Wesley Powell Student Research Conference
The leading cause of death in infants age one month-one year in the United States is Sudden Unexpected Infant Death (SUID) with about 3,500 deaths each year. These deaths are related to unsafe sleep circumstances. The American Academy of Pediatrics (AAP) released updated infant safe sleep (ISS) recommendations (2022) that include a call for healthcare professionals to endorse, model, and educate ISS practices. Also recommended is that media follow ISS guidelines in messaging and advertising. Even as parents and caregivers are educated about ISS by healthcare professionals, their parenting beliefs and behaviors are influenced by social networks including social media. …
Comparative Genomics Of Selected Lactobacillus Helveticus Strains, Cain Petty
Comparative Genomics Of Selected Lactobacillus Helveticus Strains, Cain Petty
Undergraduate Research Conference
My research is to compare two strains (D76 and H10) of Lactobacillus helveticus and a shared gene between them. I would want to experiment with overexpression to test for any difference in the regulatory function of genes associated with CggR - the central glycolytic genes regulator. The poster I am presenting would outline this and provide a clearer understanding of genes and potential overexpression.