Digital Commons Network^™

Selection For Specific Leaf Weight In Reed Canarygrass And Its Effects On The Plant, I T. Carlson, D K. Christensen, R B. Pearce

IGC Proceedings (1977-2023)

Specific leaf weight (SL W, dry weight/unit leaf area) may serve as a selection criterion for forage yield through a positive rela• tionship with photosynthesis. Two cycles of phenotypic selection for high and low SLW were conducted in reed canarygrass (Phalaris anmdinacea L.) to investigate direct and correlated responses, particularly those related to yield and quality of forage. In a space-planted test, average direct responses from two cycles of selection for high and low SLW were 23% and 19%, respectively. Significant correlated responses were obtained for ten traits. Compared with the low-SLW cycle-2 population, the high SLW cycle-2 population averaged …

Value Of White Sweet Lupin In Production Of Protein Fodder And Feeding Of Animals, O Saric, I Ramosevac

IGC Proceedings (1977-2023)

The potential of white sweet lupin (Lupinus albus L.) as a grain or forage feed for livestock was investigated in a series of ex­periments. Grain yield of lupin was greater than or equal to that of soybeans (Glycine max [L.] Merrill) in most evaluations. The quality of lupin seed compared favorably with that of soybean meal and fishmeal. Lupin is capable of producing large amounts of forage in a short period, making it a good prospect for forage production in regions that have a short growing season.

Genetic Variability For Morphological And Agronomic Characters In Desmodium Uncinatum (Jacq.) D.C. And D. Intortum (Mill.) Urb., E.M P. Oliveira, P S. Martins, A B. Cruz

IGC Proceedings (1977-2023)

Objectives of this research were to study the performance of eight populations of D. unicinatum and ten populations of D. intortum, with relation to morphological and agronomic characters to estimate the genetic variation between populations and between plants within populations, and to estimate genetic and phenotypic parameters for these characters.

White Clover: An Olde Crop With A Promising Future, P B. Gibson, W E. Knight, G W. Barnett, W A. Cope, J D. Miller

IGC Proceedings (1977-2023)

White clover (Trifolium repens L.) is a widely adapted, important forage legume for grazing in the U.S. The palatability and quality of the forage, the wide adaptation of the plants to growth in different climates and under various grazing conditions and the role it plays in supplying nitrogen to pastures make white clover our finest pasture legume. The use of adapted white clover cultivars should result in large economic gains to the livestock industry in the U.S .A. Beef and dairy farmers would profit from reduced need for nitrogen fertilizer, an extended grazing season, increased forage pro­duction and quality, better …

Performance And Variability Of Agronomic Characters In Populations Of Stylosanthes Guianensis (Aubl.) Sw., P S. Martins, N A. Vello

IGC Proceedings (1977-2023)

Stylosanthes guianens-is (Aubl.) Sw. shows wide variations in morphological and physiological characteristics, and basic infor­mation on genetic variability is needed for future breeding programs. The objectives of this paper were to evaluate 25 native Brazilian populations of S. guianensis for forage characteristics · • ;10,d • to estimate genetic and phenotypic parameters for these characters. The experiment was conducted in a duplicated 5 x 5 balanced lattice design with plots that contained 4 individuals spaced on 2-m centers. The following characters were evaluated after the beginning of flowering period: days to flowering (DF), mean diameter (MD), basal area (BA), growth …

Rhizoma Peanut: Perennial Warm-Season Forage Legume, G M. Prine

IGC Proceedings (1977-2023)

Rhizoma peanut is the common name given species in section Rhizomatosae of the genus Arachis. Florigraze rhizoma peanut (A. glabrata Benth.) has been released as a cultivar by the Florida agricultural experiment stations and the USDA Soil Conserva­tion Service. Florigraze is adapted to the well-drained soils of Florida and the warm humid tropics and subtropics around the world. Rhizoma peanuts are propagated by rhizomes, which in Florida are best planted during winter. The slowness of coverage during early establishment is the biggest shortcoming of rhizoma peanuts. If they are established first, rhizoma peanuts will grow well in mixture with bermudagrass …

Hedysarum Mongolicum Turcz.: An Important Protein Resource Legume On Dry Sandy Land, Li Min, A W. Hovin

IGC Proceedings (1977-2023)

In searching for plants that can both increase the protein production and improve the sandy-soil conservation of the grassland in the arid, windy regions of North China, so far, from among many native plants, we have identified Hedysarum mongolicum Turcz. as the best species to fulfill our dual purposes. We investigated its distribution, planted its native seeds in the Maowusu desert, and studied it under its native and cultivated growing conditions from 1957 to 1964. Chinese farmers call this perennial subbrush legume of the sweetvetcb genus "Yang Cai," meaning "sheep like to eat." It can thrive in the stable or …

Adaptation And Utilization Of Three Legume In China, Huang Wenhui

IGC Proceedings (1977-2023)

China is a vast territory with extremely varied climates, soil, and topography, and it is very rich in pasture grass resources. The main legumes for forage are Alfalfa (Medicago sativa L.), yellow alfalfa (Medicago folcata L.) and shadawang (Astragalis adsurgent Pall.)

Preliminary Evaluation Of Legume Germ Plasm In The Cerrados Of Brazil, D Thomas, R P. De Andrade

IGC Proceedings (1977-2023)

In 1978 an evaluation program was initiated to select legumes that (1) grow and produce seed on acid soils under aluminum and water stress, (2) persist under grazing, and (3) tolerate pests and diseases. The work is being conducted at the Cerrados Agricultural Research Center, near Brasilia, at lat 15°S and altitude 1,000 to 1, 100 m . Annual rainfall is 1,500 mm, mostly distributed in a 6-month wet season, and mean annual temperature is 21°C. Nine hundred legume accessions from thirteen genera have now been established as spaced plants on the 2 major soil types of the region. The …

Genetics And Utilization Of Apomixis For The Improvement Of Guineagrass (Panicum Maximum Jacq.), Y H. Savidan

IGC Proceedings (1977-2023)

Natural polymorphism in guineagrass (Panicum maximumjacq.) has been stabilized in tetraploid biotypes by apomixis. Sex­ual diploids were found in East African populations. Our objective was to determine whether apomixis could be related with a simple genetic background and manipulated in an improvement program. Apomicts of guineagrass are characterized by a 4-nucleate embryo sac structure, and this trait was used in genetical analyses to differentiate apomictic from sexual hybrids. Progeny tests were also conducted as controls. Ten different types of progenies were analyzed: tetraploid sexual (from colchicine treatment of diploids) x apomictic F1 hybrids; selfed and backcrossed progenies of sexual F1 …

Breeding Challenges In Apomictic Warm-Season Grasses, E C. Bashaw, P W. Voigt, B L. Burson

IGC Proceedings (1977-2023)

Efforts to breed apomictic grasses met with little success in the past, but results of more recent research show significant progress with some species and new prospects for improving apomicts. Early research uncovered the cytological basis for apospory and diplospory, found the common apomictic mechanisms in grasses, and showed that apomixis is transmitted from pannt to offspring. Discovery of sexual or partially sexual (facultative apomicts) plants in several species formerly considered obligate apomicts allowed for hybridization and genetic studies. Results of subsequent research confirmed inheritance of apomixis, and data from the more conclusive studies indicate that method of reproduction …

Extra Omnes: Analyzing The United States’ And Ireland’S Methods Of Quelling The Criminal Clergy Sexual Abuse Scourge, Dana Aprigliano

Journal of Catholic Legal Studies

(Excerpt)

In late 2008, an Irish businessman was successful in legally preventing sexual assault claims from being brought against him. In explaining why one “victim” should be discredited, the court cited a threat she made against the businessman to make allegations of a sexual nature against him if he did not pay her a sum of money. In particular, she told him that if he did not pay her, she would “have him . . . ’plastered all over the front of the Evening Herald like those p[e]dophile priests.’ ” Although the businessman was not a priest or, as it …

An Underrecognized Mechanism Of Spontaneous Pneumomediastinum: The Macklin Effect Following Valsalva Maneuvers, Ripudaman Singh, Fatimah Bello

Research Symposium

Background: Spontaneous pneumomediastinum (SPM) is a rare clinical condition characterized by the presence of free air in the mediastinum without preceding trauma, surgery, or invasive procedures. It predominantly affects young adults and commonly presents with acute retrosternal chest pain that is pleuritic in nature and may radiate to the neck, shoulders, or arms. Although often idiopathic, SPM is associated with conditions that increase intra-alveolar pressure, including asthma exacerbations, respiratory infections, forceful coughing or vomiting, and less commonly, Valsalva maneuvers related to intense physical activity. We report a case of uncomplicated SPM in a previously healthy young adult associated with Valsalva …

The Role Of Artificial Intelligence In Marine Pollution: A Review, Safaa A. Abdel Ghani, Sahar W. M. Hassan, Aida H. Shobier

Blue Economy

Marine pollution represents a significant threat to the sustainable use of ocean resources and is increasing globally. Consequently, multidimensional and sustainable ocean governance frameworks have placed growing emphasis on the prevention, reduction, and elimination of marine pollution. In recent years, artificial intelligence (AI) has been increasingly adopted as an effective tool for monitoring, assessing, and managing marine pollution. This review aimed to highlight the role of artificial intelligence in addressing marine pollution. The efforts of scientists in employing and leveraging the advantages of AI to tackle the issue of marine pollution were examined. It was found that AI, supported by …

Virtual Workplace And Employee Engagement, Victoria Cox, Alisa Allen

Journal of Fundamental & Applied Business Research

This article examined virtual workplace employees and employee engagement challenges and solutions. Employees who work remotely often feel disconnected from coworkers, organizational missions, and have a feeling of emotional isolation. This article examined the problems organizations face when not prioritizing virtual socialization for remote workers, leading to employee turnover, disengagement, and loneliness. The systematic review consisted of conducting a review within the Liberty University Jerry Falwell Library, encompassing empirical studies sourced from ProQuest, EBSCO, Emerald, and Gale databases. Studies published in peer reviewed journals, and the BibleGateway online between 2021 and 2026. A total of 33 journals were synthesized to …

Equity's Bruen Moment: Trump V. Casa And Lessons For The Future Of History And Tradition, Jacob D. Charles

Florida Law Review

In Trump v. CASA, the Supreme Court expounded on and applied a methodological framework that mimics the test the Court has recently begun deploying in Second Amendment and other individual rights cases. That test has three primary components: (1) search for historical analogues; (2) apply historical principles; and (3) abjure contemporary concerns that can be labeled “policy” considerations. Bruen’s echoes in CASA are noticeable and telling. So too are the lessons that CASA can teach about how the Court’s approach to history and tradition is continuing to develop.

This Article analyzes CASA as a window into the Court’s …

Book Reviews, Paul Flowers, Madel Jacobs Morgan

Journal of Mississippi History

No abstract provided.

Abiraterone-Induced Resistant Hypokalemia And Hypertension: A Preventable Complication, Ripudaman Singh, Seokwon Choi, Aramide Tijani, Fatimah Bello

Research Symposium

Background: Abiraterone, a cytochrome P17 (17a-hydroxylase/C17,20-lyase) inhibitor used in metastatic castration-resistant prostate cancer (CRPC), suppresses androgen and cortisol synthesis, leading to elevated ACTH and accumulation of mineralocorticoid precursors such as 11-deoxycorticosterone and corticosterone, both possessing potent mineralocorticoid activity^1,2,3. Concomitant prednisone is recommended to prevent this cascade, as its omission can lead to clinically significant mineralocorticoid excess manifesting as severe hypokalemia, hypertension, and fluid retention⁴. This preventable complication remains underrecognized, particularly in elderly patients who are frequently exposed to polypharmacy. Here, we report a patient with metastatic CRPC on abiraterone therapy who presented with acute wrist pain, …

Severe Ldl-C Elevation With Negative Monogenic Familial Hypercholesterolemia Testing: A Case Of Polygenic Hypercholesterolemia, Ripudaman Singh, Daniela Hernandez

Research Symposium

Background: Severe hypercholesterolemia, defined as a low-density lipoprotein cholesterol (LDL-C) level ≥190 mg/dL, is most often attributed to familial hypercholesterolemia (FH), a monogenic autosomal dominant disorder caused by pathogenic variants in genes essential for LDL-C catabolism, including the low-density lipoprotein receptor (LDLR), apolipoprotein B (APOB), proprotein convertase subtilisin/kexin type 9 (PCSK9), and LDL receptor adaptor protein 1 (LDLRAP1). Clinically, FH is characterized by markedly elevated LDL-C levels and an increased risk of premature atherosclerotic cardiovascular disease (ASCVD). Homozygous individuals typically present in childhood, while heterozygous individuals are more commonly diagnosed in adulthood. However, a substantial proportion of patients with an …

The Second Prophecy Of Mandos: Eschatology, Mythic Sources, And Editorial Choices In Tolkien’S Legendarium, Paolo Pizzimento Dr.

Journal of Tolkien Research

This article examines the development and significance of the Second Prophecy of Mandos within J.R.R. Tolkien’s legendarium. Through an analysis of Tolkien’s published works and posthumously edited texts, the study traces the evolution of the prophecy from its earliest formulations in The Book of Lost Tales to its later iterations in the Quenta Silmarillion tradition. Particular attention is devoted to the editorial decision by Christopher Tolkien to omit the prophecy from the 1977 publication of The Silmarillion, assessing both the philological and interpretative factors that may have influenced this choice. The essay further investigates Tolkien’s conceptualization of eschatology …

Limits Of Post-Activation Performance Enhancement: Asymmetry Persists Despite Performance Gains, Talia Thompson, Monique Mokha

Journal for Sports Neuroscience

Post-activation performance enhancement (PAPE) protocols are commonly used to improve power, yet their influence on inter-limb force symmetry remains unclear. This study examined the effects of a PAPE protocol on inter- and intra-session symmetry and performance during a countermovement (CMJ. Ten American football players preparing for the National Football League’s draft completed a complex PAPE protocol consisting of two baseline CMJ trials on dual uniaxial force plates, followed by three sets of maximum effort lower-body lifts (e.g., split squats) alternated with two CMJ trials. Jump height (JH), reactive strength index modified (RSImod), and asymmetry indices for concentric impulse (CIA), eccentric …

Integrated Methane And Co₂ Emissions Reduction Framework Via Agricultural Transformation, Industrial Methane Valorization, And Profitable Waste-To-Resource Conversion, Amey Krishna Solkar

Defensive Publications Series

This defensive publication describes an integrated framework designed to reduce global anthropogenic methane emissions by over 50% and achieve significant net CO_{2} drawdown. The system shifts climate remediation from reliance on subsidies to self-sustaining, profit-generating operations by embedding commodity production within three core sectors. * **Agricultural Transformation**: Replaces high-methane cattle and paddy farming with integrated aquaculture, agroforestry, and vertical farming. It features a self-regulating nitrogen cycle using co-cultivated *Azolla* and *Lemna* (duckweed) to fix nitrogen and sequester carbon. * **Fossil Fuel Valorization**: Targets oil and gas methane emissions by capturing vented gas for onsite catalytic conversion into high-value commodities, including …

A Symbolic Model Of Proof Acquisition In Act-R, Beckett Morris, Kerstin Haring

DU Undergraduate Research Journal Archive

Learning to construct mathematical proofs—formal arguments demonstrating the truth of a mathematical statement using logical deductions and previously established facts—is one of the most challenging skills in STEM education. This research aims to build the foundations for a symbolic cognitive model, using the ACT-R cognitive architecture and implementing in Python with the pyactr package, to explore how different proof strategies can be thought through with only symbols and rules. The model observes simple proofs, and its abilities are assessed based on its generalization capabilities, efficiency, and error patterns. By developing and analyzing such a model, this research provides new insights …

Visualizing Ozone Pollution In The Denver Metro Area Using A Bioindicator Garden, Ella K. Mathews, Hillary Hamann, Julie Morris, Erica L. Larson

DU Undergraduate Research Journal Archive

Since the industrial revolution, widespread fossil fuel combustion has significantly increased atmospheric pollution. The combustion of fossil fuels releases nitrogen oxides (NOx) and volatile organic compounds (VOCs), which form tropospheric (ground-level) ozone when exposed to sunlight. Ozone directly harms plants by disrupting their ability to absorb carbon dioxide, release oxygen, and carry out photosynthesis. Bioindicator species are plants that have visible responses to environmental conditions, such as ozone, and can act as “canaries in the coal mine,” indicating the health of their environment. In this study, we used a garden of ozone bioindicator species (ozone garden) as a cost-effective tool …

Generation Z And The Ai Misinformation Paradox: Understanding A New Digital Vulnerability, Cecilia Cooley, Elizabeth Sperber

DU Undergraduate Research Journal Archive

This paper asks: How and why is Generation Z more vulnerable to AI-generated misinformation and disinformation than older generations? Using a comparative review of recent empirical studies, survey data, and meta-analyses from 2019–2025, this paper synthesizes research on Gen Z’s exposure to and interaction with AI-produced content across social media platforms. Although it is commonly assumed that Gen Z ’s technological exposure and fluency make them better equipped to recognize false information, findings show the opposite: Gen Z is consistently outperformed by older cohorts in detecting AI-generated falsehoods. This vulnerability stems from three intersecting factors: (1) the sheer volume of …

King Of The Jungle: Comparative Analysis Of The Geopolitical Narratives Surrounding Fordlandia And A Proposed Resort Park In El Mirador, Rachel Jaeger

DU Undergraduate Research Journal Archive

Environmental geopolitics is a field of study in which narratives about the environment are analyzed to reveal the underlying motivations and objectives they support. Using Shannon O’Lear’s (2020) framework of environmental geopolitics, I conduct a comparative analysis of the narratives surrounding two distinct development projects: Henry Ford’s historical company town in the Brazilian Amazon, Fordlandia, and a proposed ecotourism resort park in El Mirador, Guatemala. Analysis of Fordlandia reveals a narrative of American frontierism and a man-versus-nature perspective that served to paint the environment as belligerent and thereby justify corporate control and Indigenous assimilation. Narratives surrounding El Mirador differ, representing …

Greenspace Access In The Denver Metro Region: Historical Housing Policy Impact On Modern Greenspace Distribution, Brody Petig, Susan Dagget

DU Undergraduate Research Journal Archive

Access to safe, high quality, urban green spaces is widely recognized as a determinant for physical health, mental well-being, and social cohesion. Existing literature has demonstrated that race, age, gender, and socioeconomic status frequently dictate the allocation of resources and shape disparities in access to greenspace. These disparities are also often reflective of historical housing policy and zoning decisions. This paper examines greenspace access in the Denver Metro Region (DMR) and the City and County of Denver (CCD) through a social justice lens, with particular attention to the relationship between historical housing policy and contemporary trends in greenspace distribution and …

Urban Removal: The Long-Term Impacts Of The Displacement Of Denver’S Auraria Neighborhood, Sophia Krout, Reginald A. Byron

DU Undergraduate Research Journal Archive

In the early 1970s, the Auraria Center for Higher Education was developed, displacing a well-established Denver Latino neighborhood, which encompassed a 38-block district at the time, including 155 families, 49 single individuals, and 237 businesses, and clearing the way for the establishment of the Metropolitan State University of Denver, the University of Colorado Denver, and Denver Community College. The implementation of remedial measures for the displacement has fallen short of meeting the needs of displaced residents. The residents were promised affordable education through a program named the Displaced Aurarian Scholarship, which has similarly stated intentions of improving the educational attainment …

Du Undergraduate Showcase Abstracts: Research, Scholarship, And Creative Works, Sophia Wismar, Henry Staats, Allison Metzler, Chloe Puckett, Rachel Levine, Christa Kilpatrick, Scott Wolf, Joe Walsh, Grace Doolittle, John Engebreston, Zoe Lopez, Christopher Aaby, Audrey Duff, Timothy Sisk, Katelyn Lamberton, Angela Narayan, Gilkah Argueta, Habiba Samir, Girena Tesfazghi, Genet Kenore, Sinit Tesfamariam, Effley Brooks, Abi Newell, Megan Doherty, Natalie Baer, Lexi Blood, Talya Riciputi, Jessica Jimenez, Devin Hernandez, Lynn Clark, Taj Kumar, Sunil Kumar, Allen Rutman, Mira Pronobis, Tess Carson, Anna Sher, Frankie Stroud, Tamra Pearson D'Estree, Alyssa Wilson, Emily Melnick, Jenalee Doom, Yihang Gao, Gwendolyn Geiger, Noah Gettle, Scott Nichols, Clare Ayoub, Cara Dienno, Sunny Walker, Zoe Hansen, Maya Wheeler, Addison Rice, Patrick Martin, Sanjana Acharya, Daniel Mcintosh, Amanda Mckellips, Calli Cain, Justin Blake, Peter Sokol-Hessner, Natalie Miller, Max Weisbuch, Sophia Dellota, John Macikas, Charlotte Snow, Mark Siemens, Zoe Lynch, Alex Huffman, Prachi Shah, Jason Roney, Halcyon Levi, Nicole Herzog, Andrea Koly, Daniel Linseman, Annie London, Xi Yang, Avery Zwisler, Jane Smith, Chaz Contag, Michael Kerwin, Lucy Rand, Grace Schroeder, Michelle Rozenman, Nissa Tapper, Guiming Zhang, Mateo Mazariego-Halpern, Keith Meyer, Julie Do, Dakota Park-Ozee, Travis Herink, Kara Neu, Jonathan Plomin, Eve-Odine Duchaufour, Debbie Gale Mitchell, Tennyson Anderson-Stricklin, Lily Treitz, Samantha Rosenberger, Sierra Griffith, Finley Joseph, Daniel Sampson, Emmy Davis, Skyler Kasnoff, Evon Lopez, Vivian Nguyen, Cassy Young, Franklin Sellner, Martin Tobon, Ila Graham, Zach Billings, Holden Hedit, Decatur Boland, Paul Kosempel, Cory Chandler, Jay Mahoney, Sam Dragan, Susan Dagget, Yarrow Ator, Heidi Vuletich, Owen Weber, Andrew Kloeppel, Petersen Gray, Mandi Schaeffer-Fry, Razleen Bassra, Bryanna Rodriguez, Christina Blue, Taubie Sanders, Rachel Epstein, Luke Milburn, Camryn Evans, Ezra Martinez, Mary Westwood, Gabri Notov, Robin Tinghitella, Lilou Cabrol, Eli Barbour, Juliet Mendik, Selma Myers, Zac Wise, Noah Fahlin, Michelle Knowles, Abigail Hopper, Michael Greenberger, Romi Laclair, Sarah Watamura, Sabrina Efroymson, Casey Barker, Sydney Seltzer, Bryn Yehle, Jennifer Hoffman, Sara Garcia, Ryuka Nagamine, Trevor Briggs, Remy Le Boeuf, Elena Krone, Eileen Farrell, Regan O'Rourke, Elena Roel, Greg Mortimer, Ali Ayoub, Stefani Langehennig, Caitlin Turk, Logan Scmid, Stefan Chavez-Norgaard, Karen Kim, Tatiana Peccedi, Courtney Cassidy, John Sebesta, Rhianna Lewis, Janice Bening-Lacek, Vivian Lawless, Mckenna Hanson, Jeffrey Amidon, Riya Joshi, Ram Ambre, Brady Worrell, Perrin Schneider, Ali Azadani, Brooke Agulnek, Lyndsie Salvagio, Elise Siemanowki, Yan Qin, Andre Allen, Melodie Nguyen, Megan Livengood, Abby Reams, Saffron Hartreeve, Bri Wylie, Sarah Brookman, Mariah Loiacono, Green Russo, Abhia Lodhi, Gabrielle Welsh, Nika Spehar, Shahked Levin, Evrim Baykal, Kimberly Chiew, Jocelyn Torres, Kailey Hicks, Mykaela Tanino-Springsteen, Audrey Bellows, Akam Chahal, Madeline Tepper, Shannon Murphy, Alexa Fonseca, Deborah Han, Cassandra Perez, Oluwatoyin Alaba, Julia Roncoroni, Vy Nguyen, Nana Burn, Sarah Sasse, Rubin Tuder, Anthony Gerber, Nancy Lorenzon, Christine Vohwinkel, Camryn Gunter, Tristan Weber, Sam Rommel, Brian Michel, Muskan Fatima, Alannah Oleson, Kira Frey, Edward Garrido, Beckett Morris, Kerstin Haring, Drew Middleton, Abigail Walpert, Liam Dee, Gabby Ishaw, Cole Carnes, Maddie Weiser, Claire Fox, Valeriia Vlasenko, Kateri Mcrae, Riley Smith, Abigail Templin, Kushani Rajapaksha

DU Undergraduate Research Journal Archive

Abstracts from the DU Undergraduate Research Showcase.

2026 May 28 - Tennessee Weekly Drought Summary, Tennessee Climate Office, East Tennessee State University

Tennessee Climate Office Weekly Drought Summaries

No abstract provided.