Digital Commons Network^™

Sediment Characteristics And Methane Ebullition In Three Subarctic Lakes, Martin Wik, Joel E. Johnson, Patrick M. Crill, Joel P. Destasio, Lance Erickson, Madison J. Halloran, Maria Florencia Fahnestock, Maurice K. Crawford, Stephen C. Phillips, Ruth K. Varner

Faculty Publications

Ebullition (bubbling) from climate‐sensitive northern lakes remains an unconstrained source of atmospheric methane (CH4). Although the focus of many recent studies, ebullition is rarely linked to the physical characteristics of lakes. In this study we analyze the sediments of subarctic postglacial lakes and investigate how sediment properties relate to the large spatial variation in CH4 bubble flux, quantified over multiple years using bubble traps. The results show that the sediments from our lakes are rich in total organic carbon, containing 37 kg/m3 on average. This number is roughly 40% higher than the average for yedoma deposits, which have been identified …

Clinicopathologic Features And Prognostic Grouping Of Gastrointestinal Stromal Tumors (Gists) In Pakistani Patients: An Institutional Perspective, Atif Ali Hashmi, Mahrukh Faraz, Zareeha Nauman, Mohammad Usman Qureshi, Shumaila Kanwal Hashmi, Hira Fatima Waseem, Muhammad Muzzammil Edh, Naveen Faridi, Amir Khan

Department of Pathology and Laboratory Medicine

Objectives: Gastrointestinal stromal tumors (GISTs) are rare tumors of gastrointestinal tract, prognosis of which largely depends upon histopathologic characteristics of resection specimens, which were not widely studied in our population. Therefore we aimed to evaluate the histopathologic characteristics of GISTs in our population and their prognostic grouping according to college of American pathologist’s guidelines.
Results: Mean age of patients was 53.4 years (18–71 years). 92% of cases were of primary GISTs and stomach was the most common site (57.7%). 75% of cases were of spindle cell morphology and 53.8% belonged to high risk prognostic group. Comparison of stomach and intestinal …

The Theory Of Games And Microbe Ecology, Susanne Menden-Deuer, Julie Rowlett

Graduate School of Oceanography Faculty Publications

Using game theory, we provide mathematical proof that if a species of asexually reproducing microbes is not characterized by maximum variability in competitive abilities among its individual organisms, then that species is vulnerable to replacement by competitors. Furthermore, we prove that such maximally variable species are neutral towards each other in competition for limited resources; they coexist. Our proof is constructive: given one species which does not possess maximum variability, we construct a second species with the same (or lower) mean competitive ability which can outcompete the first, in the sense that its expected value in competition is positive, whereas …

Adoption Of Open Educational Resources In California Colleges And Universities, Ruth Guthrie, Katherine Harris, Peter Krapp

Faculty Publications, English and Comparative Literature

The California Open Educational Resources Council (CAOERC) was formed in 2014 to find solutions to reduce the cost of college textbooks without impacting quality. Comprised of faculty from California's three public higher education systems, the CAOERC conducted a field study of 16 faculty using OER materials to discover practical knowledge about the challenges of adopting OER textbooks. The quality of the OER textbooks received positive reviews. The faculty also reported being more engaged with their teaching. The faculty felt that availability of OER support materials was a challenge to implementing OER. The following article presents the results of the CAOERC's …

Book Review: Mcleod, K. Wellbeing Machine: How Health Emerges From The Assemblages Of Everyday Life. Durham, Nc: Carolina Academic Press. 2017. 234 Pp $39 (Pbk) Isbn 978-1-61163-705-2, J Parsons

School of Law, Humanities and Social Sciences

No abstract provided.

The Investigation Of Silica Removal In Reverse Osmosis Concentrate By Changing Design Parameters, John M. Stomp Iv

Civil Engineering ETDs

Silica at high concentrations can precipitate and polymerize, forming scales on heat exchangers, boilers and turbines in industrial equipment, and on the feed side of the semi-permeable membranes in Reverse Osmosis (RO). Silica scale can cause decreased efficiency, increased treatment costs and, in some cases, irreversible damage. The removal of silica scale is challenging because it requires the handling of dangerous and hazardous chemicals. Therefore, much research has gone into the removal of soluble silica. The purpose of this research was to compare the overall effectiveness of silica removal in RO concentrate water with freshly precipitated Mg(OH)₂ and Fe(OH) …

Identification Of Genomic Regions Contributing To Protein Accumulation In Wheat Under Well-Watered And Water Deficit Growth Conditions, Ibrahim S. Elbasyoni, Sabah M. Morsy, Raghuprakash Kastoori Ramamurthy, Atef M. Nassar

Department of Agronomy and Horticulture: Faculty Publications

Sustaining wheat production under low-input conditions through development and identifying genotypes with enhanced nutritional quality are two current concerns of wheat breeders. Wheat grain total protein content, to no small extent, determines the economic and nutritive value of wheat. Therefore, the objectives of this study are to identify accessions with high and low grain protein content (GPC) under well-watered and water-deficit growth conditions and to locate genomic regions that contribute to GPC accumulation. Spring wheat grains obtained from 2111 accessions that were grown under well-watered and water-deficit conditions were assessed for GPC using near-infrared spectroscopy (NIR). Results indicated significant influences …

Follow The Rain? Environmental Drivers Of Tyrannus Migration Across The New World, Maggie P. Macpherson, Alex E. Jahn, Michael T. Murphy, Daniel H. Kim, Victor R. Cueto, Diego T. Tuero, Elliot D. Hill

Biology Faculty Publications and Presentations

Predictable seasonal changes in resources are thought to drive the timing of annual animal migrations; however, we currently understand little about which environmental cues or resources are tracked by different migratory bird species across the planet. Understanding which environmental cues or resources birds track in multiple migratory systems is a prerequisite to developing generalizable conservation plans for migratory birds in a changing global environment. Within the New World, climatic differences experienced by Nearctic–Neotropical migratory (NNM; i.e. breed in North America and spend the nonbreeding period in the Neotropics) and Neotropical austral migratory (NAM; i.e. breed and spend the nonbreeding period …

Regulating Mirna Biogenesis By Small Molecules, Hao Yan

Chemistry and Chemical Biology ETDs

MiRNAs are key cellular regulators and their dysregulation is associated with many human diseases. The development of miRNA inhibitors has significant implications for the therapy of diseases associated with aberrant miRNA expression. It also provides chemical tools for studying miRNA function. This dissertation focuses on the development of small-molecule based miRNA inhibitors targeting miRNA biogenesis.

The dissertation consists of four chapters. In Chapter 1, the biogenesis of miRNA was first introduced, followed by the explanation of miRNA function in health and disease. Then the approaches used for regulating miRNA were reviewed. Finally, the difficulties with miRNA regulation were summarized.

One …

Novel Compact Narrow-Linewidth Mid-Infrared Lasers For Sensing Applications, Behsan Behzadi

Optical Science and Engineering ETDs

The mid-infrared (2-14 μm) spectral region contains the strong absorption lines of many important molecular species, which make this region crucial for several well-know applications such as spectroscopy, chemical and biochemical sensing, security, and industrial monitoring. To fully exploit this region through absorption spectroscopic techniques, compact and low-cost narrow-linewidth (NLW) mid-infrared (MIR) laser sources are of primary importance.

This thesis is focused on three novel compact NLW MIR lasers: demonstration and characterization of a new glass-based spherical microlaser, investigation of the performance of a novel fiber laser, and the design of a monolithic laser on a silicon chip. Starting with …

Neural Constraints Affect The Ability To Generate Hip Abduction Torques When Combined With Hip Extension Or Ankle Plantarflexion In Chronic Hemiparetic Stroke, Natalia Sánchez, Ana M. Acosta, Roberto López-Rosado, Julius P. A. Dewald

Physical Therapy Faculty Articles and Research

Stroke lesions interrupt descending corticofugal fibers that provide the volitional control of the upper and lower extremities. Despite the evident manifestation of movement impairments post-stroke during standing and gait, neural constraints in the ability to generate joint torque combinations in the lower extremities are not yet well determined. Twelve chronic hemiparetic participants and 8 age-matched control individuals participated in the present study. In an isometric setup, participants were instructed to combine submaximal hip extension or ankle plantarflexion torques with maximal hip abduction torques. Statistical analyses were run using linear mixed effects models. Results for the protocol combining hip extension and …

The Effects Of Spinal Cord Injury On Expression Of Pain-Relevant Genes In The Colon, Noelle Mckearney

Master's Theses

Spinal cord injury (SCI) results in varying degrees of paralysis, loss of normal sensory function and, oftentimes, chronic pain originating below the level of injury. Post-SCI pain tends to be resistant to traditional analgesic therapies and has been shown to impair recovery of function, making it a significant healthcare concern. Approximately one third of SCI patients report abdominal pain as a primary and severe symptom with marked similarity to other functional gastrointestinal pain disorders (e.g. irritable bowel). The etiology of this intense pain phenotype is unclear given that visceral organs are left uninjured in SCI. Here we examine changes in …

The New Family Freedom, Emily J. Stolzenberg

Faculty Publications

In family law, “autonomy” has traditionally meant freedom from state interference in one’s intimate life. This Article describes an emergent, libertarian vision of autonomy as property rights that also demands freedom from other family members. This conception, “choice about obligations,” holds redistribution of resources between intimates to be illegitimate unless the richer party “chose” to take on financial obligations ex ante by ceremonially marrying or formally contracting. But as more people conduct their intimate lives outside these legal institutions, choice about obligations increasingly collides with another, more fundamental, family law principle: the imperative to “privatize dependency,” i.e., to redistribute resources …

Stable Isotope-Resolved Metabolomics Shows Metabolic Resistance To Anti-Cancer Selenite In 3d Spheroids Versus 2d Cell Cultures, Teresa W. -M. Fan, Salim S. El-Amouri, Jessica K. A. Macedo, Qing Jun Wang, Huan Song, Teresa Cassel, Andrew N. Lane

Center for Environmental and Systems Biochemistry Faculty Publications

Conventional two-dimensional (2D) cell cultures are grown on rigid plastic substrates with unrealistic concentration gradients of O₂, nutrients, and treatment agents. More importantly, 2D cultures lack cell–cell and cell–extracellular matrix (ECM) interactions, which are critical for regulating cell behavior and functions. There are several three-dimensional (3D) cell culture systems such as Matrigel, hydrogels, micropatterned plates, and hanging drop that overcome these drawbacks but they suffer from technical challenges including long spheroid formation times, difficult handling for high throughput assays, and/or matrix contamination for metabolic studies. Magnetic 3D bioprinting (M3DB) can circumvent these issues by utilizing nanoparticles that enable …

Faculty Senate July 10, 2018 Agenda, Faculty Senate

Agendas

No abstract provided.

2018 July 10 - Medical Student Education Committee Minutes, Medical Student Education Committee, East Tennessee State University

Medical Student Education Committee Minutes

No abstract provided.

Domain Swaps Of Arabidopsis Secondary Wall Cellulose Synthases To Elucidate Their Class Specificity, Joseph Lee Hill Jr., Ashley Nicole Hill, Alison W. Roberts, Candace H. Haigler, Ming Tien

Biological Sciences Faculty Publications

Cellulose microfibrils are synthesized by membrane‐embedded cellulose synthesis complexes (CSCs), currently modeled as hexamers of cellulose synthase (CESA) trimers. The three paralogous CESAs involved in secondary cell wall (SCW) cellulose biosynthesis in Arabidopsis (CESA4, CESA7, CESA8) are similar, but nonredundant, with all three isoforms required for assembly and function of the CSC. The molecular basis of protein–protein recognition among the isoforms is not well understood. To investigate the locations of the interfaces that are responsible for isoform recognition, we swapped three domains between the Arabidopsis CESAs required for SCW synthesis (CESA4, CESA7, and CESA8): N‐terminus, central domain containing the catalytic …

Variation In Home Range Size And Patterns In Adult Female American Crocodiles Crocodylus Acutus, Jeffrey S. Beauchamp, Kristen M. Hart, Michael S. Cherkiss, Frank J. Mazzotti

United States Geological Survey: Staff Publications

The American crocodile Crocodylus acutus is a threatened species that uses relatively deep, open-water habitats with low salinity. Adult female American crocodiles nest on sandy coastal beaches, islands or human-made berms, assist in the hatching process, and can travel long distances to nesting habitat. We satellite-tracked 15 adult female American crocodiles in 2 hydrologically distinct areas in Everglades National Park, Florida, USA, to quantify the home range sizes, test for intraspecific differences in home range and core area size and structure, and identify important crocodile high-use areas. Overall home ranges (95% kernel density estimate; KDE) for adult female crocodiles in …

Sleep Variability And Nighttime Activity Among Tsimane Forager‐Horticulturalists, Gandhi Yetish, Hillard Kaplan, Michael Gurven

ESI Publications

Objectives

A common presumption in sleep research is that “normal” human sleep should show high night‐to‐night consistency. Yet, intra‐individual sleep variation in small‐scale subsistence societies has never been studied to test this idea. In this study, we assessed the degree of nightly variation in sleep patterns among Tsimane forager‐horticulturalists in Bolivia, and explored possible drivers of the intra‐individual variability.

Methods

We actigraphically recorded sleep among 120 Tsimane adults (67 female), aged 18–91, for an average of 4.9 nights per person using the Actigraph GT3X and Philips Respironics Actiwatch 2. We assessed intra‐individual variation using intra‐class correlations and average deviation from …

Spatiotemporal Change In The Benthic Community Of Southeast Florida, Nicholas P. Jones

HCNSO Student Theses and Dissertations

High-latitude reefs have been postulated as refugia, centers for resilience or the first areas to undergo re-organization under climate change. The Southeast Florida Reef Tract (SEFRT) is a high-latitude reef system (>25 °N) running parallel to the highly urbanized coastline of southeast Florida. With a benthic community comprised of a mixture of coral reef associated assemblages, the SEFRT is towards the northern limit of stony coral cover due to temperature constraints. This study analyzed spatial variations in benthic cover, spatiotemporal changes in the benthic community and the impact of spatial and temporal fluctuations in temperature on benthic cover on …

Teacher Talk: How Many White, Middle-Class, Female Educators Perpetuate White Privilege In School, Theresa Nomensen

Dissertations

This paper examines the ways middle-class, white, women, who comprise more than eighty percent of the teaching force in public schools perpetuate white supremacy in public schools, explicitly at looking at how and what middle-class, white teachers say to and about their students of color. I interrogate and analyze my own beliefs and experiences, using autoethnography, revealing my journey from learning about my white privilege to understanding how I perpetuate white privilege in schools. Using the theoretical framework of Critical Whiteness Studies, I will interrogate my own whiteness as I confront and wrestle with whiteness in myself and in five …

The Political Nature Of Defense Policy In Congress, Timothy Welter

Dissertations

Is defense policy more collegial than other policy issues addressed by Congress? More specifically, what are the institutional and political motives which drive a majority of the members of Congress to consistently transcend partisanship in order to pass defense focused legislation into law?

The purpose of this study was to test whether or not the consideration of defense policy in the House of Representatives is unique in its ability to transcend partisanship. And if so, why?

Hypothesis: The formulation of defense policy in the U.S. House of Representatives is approached with more collegiality than other policy issue areas, mainly due …

Hypnoparenting Effects Towards Fatigue As An Impact Of Chemotherapy Among Pediatric Patients With Acute Lymphoblastic Leukemia, Sapariah Anggraini

Jurnal Keperawatan Indonesia

The management of fatigue among pediatric patients with lymphoblastic leukemia does not become a priority apart from the cancer management itself. Hence, it is necessary to put an attention towards this issue by giving another complementary therapy for the patient called hypnoparenting. By implementing hypnoparenting will decrease the level of fatigue because of the chemotherapy process. Therefore the purpose of study was to investigate the effect of hypnoparenting towards fatigue prevalence as an impact of chemotherapy among pediatric patients with Acute Lymphoblastic Leukemia. This research utilized quasi experiment before after study. The population of the study was pediatric patients (5-12 …

Exposition Des Travailleurs Aux Substances Chimiques Et Aux Agents Biologiques Dans Les Usines De Biométhanisation Des Matières Organiques Putrescibles : Évaluation Exploratoire, Bouchra Bakhiyi, Geneviève Marchand, Yves Cloutier, Yves Beaudet, Marc Veillette, Marie-Ève Dubuis, Hamza Mbareche, Joseph Zayed, Caroline Duchaine, Jacques Lavoie

Rapports de recherche scientifique

La biométhanisation est un procédé de transformation anaérobie des matières organiques putrescibles (MOP) en biogaz et en digestat destiné à l'épandage en milieu agricole. Ce procédé est en forte croissance en raison de la Politique québécoise de gestion des matières résiduelles qui prévoit le bannissement de l'enfouissement des MOP, et ce, dès 2020. L'exposition des travailleurs affectés aux activités de biométhanisation a fait l’objet de peu de publications scientifiques. L'objectif général de cette recherche est donc d'évaluer de manière exploratoire l’exposition de ces travailleurs. Plus spécifiquement, cette étude vise à 1) détecter et à mesurer la présence et les concentrations …

Annotated Bibliography Of The Global Literature On The Secondary Transportation Of Raw And Comminuted Forest Products (2000-2015), Anil Koirala, Anil Raj Kizha, Cornelis F. De Hoop, Brian E. Roth, Han Sup Han, Patrick Hiesl, Dalia Abbas, Shuva Gautam, Srijana Baral, Steve Bick, Kamalakanta Sahoo

Faculty Publications

Secondary transportation of raw and comminuted forest products is a major component in forest harvesting operations in terms of economics, public perception, and safety. Consequently, there is a substantial amount of literature on this topic. The existing literature has dealt with many of the technical aspects of transportation with a majority of them focusing on improving supply chain issues; however, there are only few specific to secondary transportation issues in general. This annotated bibliography will help practitioners, researchers, and stakeholders gain a better understanding of the existing literature from 2000 to 2015. To this end, we began by classifying the …

Water Pharmacophore: Designing Ligands Using Molecular Dynamics Simulations With Water, Sang Won Jung, Minsup Kim, Steven Ramsey, Tom Kurtzman, Art E. Cho

Publications and Research

In this study, we demonstrate a method to construct a water-based pharmacophore model which can be utilized in the absence of known ligands. This method utilizes waters found in the binding pocket, sampled through molecular dynamics. Screening of compound databases against this water-based pharmacophore model reveals that this approach can successfully identify known binders to a target protein. The method was tested by enrichment studies of 7 therapeutically important targets and compared favourably to screening-by-docking with Glide. Our results suggest that even without experimentally known binders, pharmacophore models can be generated using molecular dynamics with waters and used for virtual …

Three Eagles Honored For Academics, Georgia Southern University

Athletics: News & Publications

• Three Eagles Honored For Academics
• Kramer, Odlin, Middlebrook earn plaudits for work in classroom

Kleptoparasitism Of Harvester Ants By The Giant Kangaroo Rat (Dipodomys Ingens) In The Carrizo Plain, California, Matthew Polvorosa Kline, Jeff A. Alvarez, Nicole Parizeau

Western North American Naturalist

Kangaroo rats are reported to have a mutualistic relationship with harvester ants through facilitation of burrow establishment, creation, and persistence. The relationship can, however, become more complex. We report observations of the giant kangaroo rat (Dipodomys ingens), a state and federally listed endangered species, repeatedly kleptoparasitizing harvester ants from a nearby nest in the Carrizo Plain, California. Though the relationship between kangaroo rats and harvester ants has been studied extensively and is believed to be mutualistic, under certain conditions this relationship can follow an alternate path of parasitism.


Se ha reportado que las ratas canguro mantienen una relación …

Peningkatan Kualitas Hidup Lanjut Usia (Lansia) Di Kota Depok Dengan Latihan Keseimbangan, Stefanus Mendes Kiik, Junaiti Sahar, Henny Permatasari

Jurnal Keperawatan Indonesia

Quality Improvement of Elderly Life in Depok City with Balance Exercise. The quality of life (QOL) of the older adult is affected by various factors such as physical health, psychological health, social relationships and environment. This study aimed to investigate the effect of balance exercise on quality of life among older adults. This quasi-experimental design included two groups; 30 subjects as intervention groups and 30 subjects as control groups. The sample was taken by multistage random sampling. There were significant improvements in quality of life among older adults (p<0,001). Balance exercise can improve physical health, psychological health, social relationships, and environment. Balance exercise can be utilized as one of the preventive efforts to increase the quality of life among older adults in the community. Further research may consider a variety of age to know the effectiveness of balance exercise.

Litter Identity Affects Assimilation Of Carbon And Nitrogen By A Shredding Caddisfly, Adam C. Siders, Zacchaeus G. Compson, Bruce A. Hungate, Paul Dijkstra, George W. Koch, Adam S. Wymore, A. Stuart Grandy, Jane C. Marks

Faculty Publications

Ecologists often equate litter quality with decomposition rate. In soil and sediments, litter that is rapidly decomposed by microbes often has low concentrations of tannin and lignin and low C:N ratios. Do these same traits also favor element transfer to higher trophic levels in streams, where many insects depend on litter as their primary food source? We test the hypothesis that slow decomposition rates promote element transfer from litter to insects, whereas rapid decomposition favors microbes. We measured carbon and nitrogen fluxes from four plant species to a leaf-shredding caddisfly using isotopically labeled litter. Caddisflies assimilated a higher percentage of …