Digital Commons Network^™

Phosphorylation Of Adp-Glucose Pyrophosphorylase During Wheat Seeds Development, Danisa M. L. Ferrero, Claudia V. Piattoni, Matías D. Asencion Diez, Bruno E. Rojas, Matías D. Hartman, Miguel A. Ballicora, Alberto A. Iglesias

Chemistry: Faculty Publications and Other Works

Starch is the dominant reserve polysaccharide accumulated in the seed of grasses (like wheat). It is the most common carbohydrate in the human diet and a material applied to the bioplastics and biofuels industry. Hence, the complete understanding of starch metabolism is critical to design rational strategies to improve its allocation in plant reserve tissues. ADP-glucose pyrophosphorylase (ADP-Glc PPase) catalyzes the key (regulated) step in the synthetic starch pathway. The enzyme comprises a small (S) and a large (L) subunit forming an S2L2 heterotetramer, which is allosterically regulated by orthophosphate, fructose-6P, and 3P-glycerate. ADP-Glc PPase was found in a phosphorylated …

A Study Of Covid-19 Mortality Under Varying Patient Frailty, Alison N. Sifuentes

Theses and Dissertations

Modeled the spread and mortality of COVID-19 throughout the city of Chicago. By incorporating group frailty into a classic SEIR infectious disease model, we were able to differentiate the population of Chicago by their response to COVID-19. Three age groups with different COVID-19-induced death rates were examined, and the model sought to showcase the multiplicative deviation of each age group death rate from the average disease-induced death rate. This adjustment for different death rates among age groups accounted for heterogeneity within the population, and sought to introduce a more accurate manner for modeling the spread of infectious diseases.

Cape Verde Beach Hazards, C Stokes, T Scott, G Masselink

School of Biological and Marine Sciences

No abstract provided.

Effects Of Different Factors On The Hypocotyls Protoplast Isolation Of Common Sainfoin, Yupeng Luo, Bo Zhang, Aiping Chen

IGC Proceedings (1977-2023)

No abstract provided.

A Study Of Forage Germplasm Resources And Their Utilization In Heilongjiang Province China, Xinyin Luo, Hong Li, Haiyang You

IGC Proceedings (1977-2023)

No abstract provided.

Study On Foliar Photosynthetic Physiology Characteristics Of Setaria Sphacelata, Fucheng Luo, Jianfu Wu, Zhenzhong Sun

IGC Proceedings (1977-2023)

No abstract provided.

A New Lesser Antillean Scorpion Of The Genus Didymocentrus Kraepelin, 1905 (Scorpiones: Diplocentridae), Rolando Teruel, Karl Questel

Euscorpius

A new species of the diplocentrid scorpion of the genus Didymocentrus Kraepelin, 1905 is herein described from the Lesser Antillean island of Martinique. It long remained misidentified as Didymocentrus lesueurii (Gervais, 1844), the only species of this genus inhabiting the adjacent island of Saint Lucia. The direct comparison of adults of both sexes from these two islands revealed solid morphological characters, which warrant their recognition as two different taxa. Each one is endemic from a single major island, where it is widespread even in its satellite islets. This addition raises the known composition of the genus to 12 species, 10 …

Text-Influenced Expressions Of Understanding: Differences In Kindergartners’ Discourse And Written Retellings Of Traditional And Digital Texts During Buddy Reading, Julie Parrish

LSU Doctoral Dissertations

Buddy reading a text is a collaborative act that typically generates discourse that provides researchers with a glimpse of the comprehending taking place. However, in recent years, the infusion of technology in classrooms has resulted in many traditional texts being replaced by digital versions. Thus, this qualitative case study examined the spoken and written discourse of 12 kindergartners (6 dyads) as they buddy read a traditional and digital text.

Drawing upon two distinct lenses—sociocultural and comprehension signifier—video recordings, transcriptions, and written retellings were analyzed. Specifically, process coding and in vivo coding were used to construct categories and uncover sociocultural patterns …

Benefits Of Continuously Spaced Energies And Scanned Beams For Electron Bolus Conformal Therapy For Left-Side Post-Mastectomy Chest Wall, Stephanie Lianglei Wang

LSU Master's Theses

Purpose: This study assessed the benefits to the heart and lung of using scanned electron beams and continuous energy spacing (ΔR₉₀=0.1 cm) for left-side post-mastectomy radiotherapy (PMRT) patients previously treated with volumetric modulated arc therapy (VMAT). Such beams offer a sharper distal falloff (R_90-10) than do currently available scattered, discrete energy beams, which increases sparing of healthy organs distal to the target.

Methods: Seven left-side PMRT patients previously treated with VMAT at the Mary Bird

Perkins Cancer Center were planned in this study. The patients were divided into two sets; Patient Sets 1 (three patients) and …

Phosphorus Variability In The Area Of Influence Of The Mid-Barataria Sediment Diversion, Peter Mates

LSU Master's Theses

Man-made levees along the lower Mississippi River prevent delivery of sediment from building and maintaining Louisiana’s coastal wetlands. The Mid-Barataria sediment diversions is designed to reintroduce Mississippi River water, sediment, and nutrients into the sediment-starved Barataria Basin. Phosphorus (P) is an important macronutrient for regulating primary production in coastal marine ecosystems. Wetlands can serve as a sink or source for phosphorus to the overlying water column through various retention and release processes, dependent on concentration. Louisiana coastal systems can be phosphorus limited due to much higher concentrations of bioavailable Nitrogen in river water. The high soluble molar N:P ( >50:1) …

Fish Community Composition And Structure Near A Freshwater River Diversion In Southeastern Louisiana, Rachel L. Snider

LSU Master's Theses

Gulf of Mexico estuaries, particularly in Louisiana, are among the world’s most productive, with landings of commercially- and recreationally-important species exceeding all other contiguous US states. Coastal wetlands are disappearing at an alarming rate because they have been impounded from Mississippi River water and sediment. Although controversial, one proposed solution is to re-route the Mississippi River through diversions and siphons to supply the freshwater and sediments necessary to rebuild vanishing wetlands, particularly in Barataria Bay and Breton Sound, LA. This strategy is one approach outlined in the Louisiana Coastal Master Plan. This project aimed to describe the composition and structure …

Water Quality, Phytoplankton, And Microphytobenthos Dynamics Of Sediment Borrow Areas On The Louisiana Continental Shelf, Monique Boudreaux

LSU Master's Theses

Coastal and continental shelf waters, like northern Gulf of Mexico, are undergoing changes related to natural and human-induced processes causing significant morphological changes. Louisiana, particularly, is experiencing accelerated land loss causing rapid degradation of barrier islands. Restoration of barrier islands employ sediment additions from the continental shelf through dredging. Implications to the ecology of these areas from dredging have been reported in water quality changes, sediment stressors, and contaminant releases, however, research is limited. To understand the implications of dredging on water quality on a seasonal and temporal scale, water samples and sediment cores were taken inside and outside of …

Cholera In Present-Day Haiti: Interpretations Of And Responses To A Contemporary Enemy, Melissa Frick

Swarthmore Undergraduate History Journal

Note: In lieu of an abstract, this is the article's first paragraph.

"In his introduction to Epidemics and Ideas, Paul Slack calls to revive the study of social history of epidemics, wanting to show how societies cope with, react to, and interpret crises of disease. He reviews historian Richard Evans’ notion of the “common dramaturgy” to all epidemics, which states that human society responds to mass infection through an inherent response mechanism. Disease presents common dilemmas - including decisions on how the disease is transmitted, whom it infects, who is to blame, and incites common responses. Furthermore, Slack suggests that …

Genes Adapt To Outsmart Gene-Targeting Strategies In Mutant Mouse Strains By Skipping Exons To Reinitiate Transcription And Translation., Vishnu Hosur, Benjamin E. Low, Daniel Li, Grace Stafford, Vivek Kohar, Leonard D. Shultz, Michael V. Wiles

Faculty Research 2020

BACKGROUND: Gene disruption in mouse embryonic stem cells or zygotes is a conventional genetics approach to identify gene function in vivo. However, because different gene disruption strategies use different mechanisms to disrupt genes, the strategies can result in diverse phenotypes in the resulting mouse model. To determine whether different gene disruption strategies affect the phenotype of resulting mutant mice, we characterized Rhbdf1 mouse mutant strains generated by three commonly used strategies-definitive-null, targeted knockout (KO)-first, and CRISPR/Cas9.

RESULTS: We find that Rhbdf1 responds differently to distinct KO strategies, for example, by skipping exons and reinitiating translation to potentially yield gain-of-function alleles …

Stefan Bucher, John White

Communication Design: Design Pioneers

No abstract provided.

The Fluxnet2015 Dataset And The Oneflux Processing Pipeline For Eddy Covariance Data, Gilberto Pastorello, Carlo Trotta, Shirley A. Papuga, Dario Papale

Environmental Science and Geology Faculty Research Publications

The FLUXNET2015 dataset provides ecosystem-scale data on CO2, water, and energy exchange between the biosphere and the atmosphere, and other meteorological and biological measurements, from 212 sites around the globe (over 1500 site-years, up to and including year 2014). These sites, independently managed and operated, voluntarily contributed their data to create global datasets. Data were quality controlled and processed using uniform methods, to improve consistency and intercomparability across sites. The dataset is already being used in a number of applications, including ecophysiology studies, remote sensing studies, and development of ecosystem and Earth system models. FLUXNET2015 includes derived-data products, such as …

A Strategic Plan To Thread Genomics Competencies Into Undergraduate Curriculum, Holly Mathis

Dissertations

Problem: Genomics in undergraduate nursing education has experienced slow adoption in the United States. Various approaches have been proposed but do not address barriers to successful implementation.

Methods: A strategic plan was developed to increase the amount of genetics and genomic content in the curriculum of an undergraduate nursing program. A gap analysis was performed on the curriculum revealing a paucity of content. A SWOT analysis informed the strategic plan, which included a faculty education program using the ANA/ISONG’s Essentials of Genetic and Genomic Nursing: Competencies, Curricula Guidelines and Outcome Indicators (2^nd ed.) (2009) as a foundation.

Results: Faculty …

Discovery Of A Role For Rab3b In Habituation And Cocaine Induced Locomotor Activation In Mice Using Heterogeneous Functional Genomic Analysis, Jason A. Bubier, Vivek M. Philip, Price E. Dickson, Guy Mittleman, Elissa J Chesler

Faculty Research 2020

Substance use disorders are prevalent and present a tremendous societal cost but the mechanisms underlying addiction behavior are poorly understood and few biological treatments exist. One strategy to identify novel molecular mechanisms of addiction is through functional genomic experimentation. However, results from individual experiments are often noisy. To address this problem, the convergent analysis of multiple genomic experiments can discern signal from these studies. In the present study, we examine genetic loci that modulate the locomotor response to cocaine identified in the recombinant inbred (BXD RI) genetic reference population. We then applied the GeneWeaver software system for heterogeneous functional genomic …

Relationships Between Vegetation And Soil Seed Banks Along A Center-To-Edge Gradient On A Tropical Coral Island, Yao Huang, Hai Ren, Jun Wang, Nan Liu, Shuguang Jian, Hongyue Cai, Dafeng Hui, Qinfeng Guo

Biology Faculty Research

Few studies have focused on the relationships between vegetation and soil seed banks on small islands. To better understand the pattern and regeneration potential of seed banks on tropical coral islands, we measured environmental factors and the species composition, and species richness of soil seed banks and vegetation along a gradient from the center to the edges on East Island in the South China Sea. The results showed that the similarity between the species composition of vegetation and seed banks increased from the center to the edge. In the center, species richness in both vegetation and seed banks was positively …

Plant And Fungal Products That Extend Lifespan In Caenorhabditis Elegans, Jan Martel, Cheng Yeu Wu, Hsin Hsin Peng, Yun Fei Ko, Hung Chi Yang, John D. Young, David M. Ojcius

All Dugoni School of Dentistry Faculty Articles

The nematode Caenorhabditis elegans is a useful model to study aging due to its short lifespan, ease of manipulation, and available genetic tools. Several molecules and extracts derived from plants and fungi extend the lifespan of C. elegans by modulating aging-related pathways that are conserved in more complex organisms. Modulation of aging pathways leads to activation of autophagy, mitochondrial biogenesis and expression of antioxidant and detoxifying enzymes in a manner similar to caloric restriction. Low and moderate concentrations of plant and fungal molecules usually extend lifespan, while high concentrations are detrimental, consistent with a lifespan-modulating mechanism involving hormesis. We review …

The Development Of Science Identity In Undergraduate Stem Majors: A Case Study Of Urban High School Students, Charles Mcwilliams, Benjamin Nims, Kathleen Dwyer

Dissertations

The STEM fields, science, technology, engineering, and mathematics, face a significant challenge: the underrepresentation of women and minority racial groups entering STEM degree programs and careers. Addressing this STEM gap requires more than quality curriculum and educational supports; there is a need to understand the social psychological processes that influence students’ perceptions, motivation, and interest in STEM. The concept of science identity has been posed as a research perspective to understand participation and persistence in STEM. Enacting a science identity may include describing oneself as a scientist, having a high sense of self-efficacy to do scientific work, displaying an interest …

Physiochemical Characteristics Of Hot And Cold Brew Coffee Chemistry: The Effects Of Roast Level And Brewing Temperature On Compound Extraction., Niny Z. Rao, Megan Fuller, Meghan D Grim

College of Life Sciences Faculty Papers

The role of roasting in cold brew coffee chemistry is poorly understood. The brewing temperature influences extraction processes and may have varying effects across the roast spectrum. To understand the relationship between brew temperature and roast temperature, hot and cold brew coffees were prepared from Arabica Columbian coffee beans roasted to light, medium, and dark levels. Chemical and physical parameters were measured to investigate the relationships among degree of roast, water temperature, and key characteristics of resulting coffees. Cold brew coffees showed differential extraction marked by decreased acidity, lower concentration of browned compounds, and fewer TDS indicating that cold water …

Changes Of Land Cover In Diwaniyah Governorate And Their Impact On Agricultural Sustainability By Using Geomatics Techniques., M. Elmewafi, S. Kedy, A. Elnaggar

Mansoura Engineering Journal

Sustainability of agricultural lands has the highest priority worldwide and developing countries in particular. Fertile agricultural lands in Iraq are constantly deteriorating due to urbanization and importing agricultural products from other countries. The main objective of this work was to provide an accurate assessment of agricultural lands in Diwaniyah Governorate, Iraq during the studied period from 1985 to 2014.This was in addition to evaluating the availability of surface water resources for agricultural sustainability. For these purposes both Remote Sensing (RS) and Geographic information system (GIS) data and technology were integrated in this work. Landsat images in 1985, 1992, 2002 and …

The Weekly Challenger, July 9, 2020, The Weekly Challenger, Et Al

Weekly Challenger Newspaper Collection

The July 9, 2020, issue of The Weekly Challenger.

Mapping Gadolinium Contrast In A Complex Ionic And Photosynthesis Environment Of Pineapple By Near-Infrared And X-Ray Imaging, Subhendra Sarkar, Zoya Vinokur, Chen Xu, Tetiana Soloviova, Amina Shahbaz, Aldona Gjoni

Publications and Research

This work explores the diffusivity of a lanthanide complex, Eovist (Gadolinium-Ethoxy Benzyl Diethylenetriamine pentaacetate) that is stable in neutral media but is not in acidic environment. In the current work an acidic fruit model like pineapple that is rich in transition metals was used and a possible transmetallation reaction among Eovist and transition metal complexes was tested using X-ray imaging. Another goal of this work was to perturb the usual and the unusual photosynthesis systems that pineapple has maintained for millions of years during the evolution of circadian genes for efficient water conservation by dark photosynthesis. To detect such photosynthesis …

Her9/Hes4 Is Required For Retinal Photoreceptor Development, Maintenance, And Survival, Cagney E. Coomer, Stephen G. Wilson, Kayla F. Titialii-Torres, Jessica D. Bills, Laura A. Krueger, Rebecca A. Petersen, Evelyn M. Turnbaugh, Eden L. Janesch, Ann C. Morris

Biology Faculty Publications

The intrinsic and extrinsic factors that regulate vertebrate photoreceptor specification and differentiation are complex, and our understanding of all the players is far from complete. Her9, the zebrafish ortholog of human HES4, is a basic helix-loop-helix-orange transcriptional repressor that regulates neurogenesis in several developmental contexts. We have previously shown that her9 is upregulated during chronic rod photoreceptor degeneration and regeneration in adult zebrafish, but little is known about the role of her9 during retinal development. To better understand the function of Her9 in the retina, we generated zebrafish her9 CRISPR mutants. Her9 homozygous mutants displayed striking retinal phenotypes, including decreased …

Towards Refining Alzheimer's Disease Into Overlapping Subgroups, Erin R. Hascup, Kevin N Hascup

Articles

Alzheimer’s disease (AD) is an age-related neurodegenerative disorder characterized by progressive anterograde amnesia, cerebral atrophy, and eventual death. Current treatment has limited efficacy and cannot decelerate the disease progression. Clinical trials targeting the removal of the neuropathological hallmarks of AD, including accu- mulation of amyloid plaques or neurofibrillary tangles, have failed to modify disease progression. Without new or innovative hypotheses, AD is poised to become a public health crisis within this decade. We present an alternative hypothesis—that AD is the result of multiple interrelated causalities. The intention of this manuscript is to initiate a discussion regarding these multiple causalities and …

Dataset For Estimating Ebird Arrival Dates And Temperature Anomalies For American Kestrels, Breanna F. Powers, Jason M. Winiarski, Juan M. Requena-Mullor, Julie A. Heath

Biological Sciences Data

In migratory birds, among- and within-species heterogeneity in response to climate change may be attributed to differences in migration distance and, consequently, environmental cues that affect timing of arrival at breeding grounds. We used eBird observations and a within-species comparative approach to examine whether migration distance (with latitude as a proxy) and climate explain spring arrival dates in a raptor species with a widespread distribution and diverse migration strategies, the American Kestrel Falco sparverius. We found an interactive effect between latitude and spring minimum temperatures on arrival dates, where at lower latitudes (short-distance migrants) kestrels arrived earlier in warmer springs …

The Joy Of Specs, Sarah Scaier

UNH Today Archive

No abstract provided.

The Historic Fire Return Interval And The Ecological Effects Of Fire Suppression On Montane Longleaf Pine Dominated Ecosystems In Northwestern Georgia., Christopher Waters

Master of Science in Integrative Biology Theses

Longleaf pine ecosystems have experienced pronounced declines across the southeastern United States since Euro-American settlement took place in the late 19th century. These declines were primarily caused by federal fire suppression policies implemented in the 1920’s, in combination with resource harvesting and land use conversion. In an absence of fire, tree species composition of frequently burned xeric ecosystems progressively becomes more mesic and fire-intolerant (i.e. mesophication). The change in the species composition and historic fire frequency of a montane longleaf pine ecosystem located in Sheffield Wildlife Management Area (WMA), Paulding County, Georgia was investigated. The change in forest composition …