Digital Commons Network^™

Challenges And Opportunities In The Care Of Chronic Subdural Haematoma: Perspectives From A Multi-Disciplinary Working Group On The Need For Change, Dj Stubbs, B Davies, P Hutchinson, Dk Menon, Th Bashford, E Edlmann, A Bateman, P Braude, R Burnstein, S Camp, G Carr, Pj Clarkson, J Coles, J Dhesi, J Dinsmore, M Dixon-Woods, A Ercole, N Evans, A Figaji, S Griffin, P Grundy, P Hartley, A Joannides, A Kolias, F Lecky, P May, I Moppett, S Morris, M Nathanson, J Outtrim, N Owen, N Phillips, T Quinn, S Ralhan, D Sapsford, Djh Shipway, C Skitterall, M Smith, M Swart, W Thomas, K Walton, N Wareham, P Whitfield, Sr Wilson, M Vindlacheruvu

Peninsula Medical School

No abstract provided.

The Emergence Of Covid-19 Associated Mucormycosis: A Review Of Cases From 18 Countries, Martin Hoenigl, Danila Seidel, Agostinho Carvalho, Shivaprakash M. Rudramurthy, Amir Arastehfar, Jean-Pierre Gangneux, Nosheen Nasir, Alexandro Bonifaz, Javier Araiza, Nikolai Klimko

Department of Medicine

Reports of COVID-19-associated mucormycosis have been increasing in frequency since early 2021, particularly among patients with uncontrolled diabetes. Patients with diabetes and hyperglycaemia often have an inflammatory state that could be potentiated by the activation of antiviral immunity to SARS-CoV2, which might favour secondary infections. In this Review, we analysed 80 published and unpublished cases of COVID-19-associated mucormycosis. Uncontrolled diabetes, as well as systemic corticosteroid treatment, were present in most patients with COVID-19-associated mucormycosis, and rhino-orbital cerebral mucormycosis was the most frequent disease. Mortality was high at 49%, which was particularly due to patients with pulmonary or disseminated mucormycosis or …

Macromolecular Composition And Substrate Range Of Three Marine Fungi Across Major Cell Types, Seth Thomas, Sabine K. Lengger, Kimberley E. Bird, Ro Allen, Michael Cunliffe

School of Biological and Marine Sciences

Abstract Marine fungi exist as three major cell types: unicellular yeasts, filamentous hyphae and zoosporic early-diverging forms, such as the Chytridiomycota (chytrids). To begin to understand the ecological and biogeochemical influence of these cell types within the wider context of other plankton groups, cell size and macromolecular composition must be assessed across all three cell types. Using a mass–balance approach to culture, we describe quantitative differences in substrate uptake and subsequent macromolecular distribution in three model marine fungi: the yeast Metschnikowia zobellii, the filamentous Epicoccum nigrum and chytrid Rhizophydium littoreum. We compared these model cell types with select oleaginous phytoplankton …

Factors Associated With Racial And Ethnic Disparities In Cesarean Delivery Among Women With Low-Risk Pregnancies At New York City Hospitals, 2012-2017, Ellen Brazier

Dissertations and Theses

BACKGROUND: While Cesarean delivery is a life-saving procedure when certain complications arise, it is associated with increased risks of maternal mortality and morbidity, as well as neonatal and childhood morbidities, and increased risks for women during subsequent pregnancies. Stark and persistent racial/ethnic disparities in Cesarean delivery that are not explained by clinical risks raise concerns about overuse of the procedure, as well as the contribution of potentially avoidable Cesareans to disparities in maternal mortality and morbidity. Understanding the extent to which disparities in Cesarean delivery may be attributable to differences in care during labor is critical for addressing these disparities. …

Spatial Personalities: A Meta-Analysis Of Consistent Individual Differences In Spatial Behavior, Erica F. Stuber, Ben S. Carlson, Brett R. Jesmer

Wildland Resources Faculty Publications

Individual variation in behavior, particularly consistent among-individual differences (i.e., personality), has important ecological and evolutionary implications for population and community dynamics, trait divergence, and patterns of speciation. Nevertheless, individual variation in spatial behaviors, such as home range behavior, movement characteristics, or habitat use has yet to be incorporated into the concepts or methodologies of ecology and evolutionary biology. To evaluate evidence for the existence of consistent among-individual differences in spatial behavior – which we refer to as “spatial personality” – we performed a meta-analysis of 200 repeatability estimates of home range size, movement metrics, and habitat use. We found that …

Non‐Lethal Sampling For The Stable Isotope Analysis Of The Critically Endangered European Eel Anguilla Anguilla : How Fin And Mucus Compare To Dorsal Muscle, Rm Boardman, Ac Pinder, At Piper, Catherine Gutmann Roberts, Rm Wright, Jr Britton

School of Biological and Marine Sciences

Ecological studies on the critically endangered European eel Anguilla anguilla often incorporate stable isotope analysis that typically uses dorsal muscle sampled from euthanised eels. To minimise the lethal sampling of imperilled populations, fin tissue and/or epidermal mucus can provide non-lethal alternatives to muscle. The results here indicate that δ13 C and δ15 N values of both eel fin and mucus are not significantly different from those of muscle and can be applied directly in comparative SI studies.

Forb Counts In Grassland Are Sensitive To Analytical Method, Gene A. Fults

IGC Proceedings (1977-2023)

An analysis of forbs from 9 years of Plant Census protocol (NRI 2019) is compared to data from the Line Point Intercept (LPI) protocol. Both protocols were conducted on the same geospatially separate macroplots (N=1230). The macroplots locations were stratified by NRI based on a land hierarchy which has had long-term use in the United States (Salley etal 2015). This ties vegetation and land together in the data. The analysis showed that the 15-minute plant census method increased forb species data by 29 percent over the LPI method which takes 40-60 minutes. Both methods captured similar total ratios and rank …

Current Methods And Future Directions In Avian Diet Analysis, Brandon D. Hoenig, Allison M. Snider, Anna M. Forsman, Keith A. Hobson, Steven C. Latta, Eliot T. Miller, Michael J. Polito, Luke L. Powell, Samantha L. Rogers, Thomas W. Sherry, David P.L. Toews, Andreanna J. Welch, Sabrina S. Taylor, Brady A. Porter

Faculty Publications

Identifying the composition of avian diets is a critical step in characterizing the roles of birds within ecosystems. However, because birds are a diverse taxonomic group with equally diverse dietary habits, gaining an accurate and thorough understanding of avian diet can be difficult. In addition to overcoming the inherent difficulties of studying birds, the field is advancing rapidly, and researchers are challenged with a myriad of methods to study avian diet, a task that has only become more difficult with the introduction of laboratory techniques to dietary studies. Because methodology drives inference, it is important that researchers are aware of …

Characterizing Invasiveness Through A Descriptive Study Of Guinea Grass (Megathyrsus Maximus) Growing In Three Habitat Types And Differing Herbivore Assemblages In Both Kenya And Texas, A. C. Rhodes, R. M. Plowes, D. J. Martins, I. Ng'iru, L. E. Gilbert

IGC Proceedings (1977-2023)

Guinea grass (Megathyrsus maximus syn. Panicum maximum) is an important pasture grass that has been introduced pantropically, yet in many cases has escaped cultivation and is invading native rangelands – threatening biodiversity at multiple trophic levels. An increasing challenge of rangeland management is balancing the importance of pasture grasses with their negative impact on ecosystem processes. Given this challenge, it is critical to understand the mechanisms that underlie grass invasion. In this descriptive study, our objective was to assess the ecological stress release hypothesis by comparing the relative abundance and functional traits of Guinea grass in Kenya's home …

An Integrated Framework To Study Ecological Tipping Points In Social-Ecological Systems, F. A. Männer, L.-M. Schwarz, D. A. Menestrey-Schwieger, V. Amputu, M. C. Bilton, K. Brinkmann, G. Dressler, N. Hamunyela, H. Heita, S. Heshmati, S. Liehr, M. Mbidzo, F. Munyebvu-Chambara, W. C. Nesongano, M. Rauchecker, A. Sandhage-Hofmann, K. Tielbörger, K. Zimmer, A. Linstädter

IGC Proceedings (1977-2023)

Sudden regime shifts or tipping points pose a major threat to various ecosystems and people's livelihoods worldwide. However, tipping points are still hard to predict and often occur without warning. To avoid dramatic social-ecological consequences, it is crucial to understand tipping point behaviour and to identify early warning indicators. Previous studies have hardly implemented an integrated social-ecological approach, which has led to a fragmented understanding and oversimplification of tipping point phenomena. Against this background, we present a systemic research framework that harmonizes ecological and social perspectives to gain a mechanistic understanding of tipping point behaviour. We utilize a social-ecological systems …

Allometric Relationships Of Ecologically Important Antarctic And Arctic Zooplankton And Fish Species, Fokje L. Schaafsma, Carmen L. David, Doreen Kohlbach, Julia Ehrlich, Giulia Castellani, Benjamin A. Lange, Martina Vortkamp, André Meijboom, Anna Fortuna-Wünsch, Antonia Immerz, Hannelore Cantzler, Apasiri Klasmeier, Nadezhda Zakharova, Katrin Schmidt, Anton P. Van De Putte, Jan Andries Van Franeker, Hauke Flores

School of Geography, Earth and Environmental Sciences

Allometric relationships between body properties of animals are useful for a wide variety of purposes, such as estimation of biomass, growth, population structure, bioenergetic modelling and carbon flux studies. This study summarizes allometric relationships of zooplankton and nekton species that play major roles in polar marine food webs. Measurements were performed on 639 individuals of 15 species sampled during three expeditions in the Southern Ocean (winter and summer) and 2374 individuals of 14 species sampled during three expeditions in the Arctic Ocean (spring and summer). The information provided by this study fills current knowledge gaps on relationships between length and …

Chronic Background Radiation Correlates With Sperm Swimming Endurance In Bank Voles From Chernobyl, Kati Kivisaari, Sara Calhim, Zbyszek Boratyríski, Timothy Mousseau, Anders P. Møller, Tapio Mappes

Faculty Publications

Sperm quantity and quality are key features explaining intra- and interspecific variation in male reproductive success. Spermatogenesis is sensitive to ionizing radiation and laboratory studies investigating acute effects of ionizing radiation have indeed found negative effects of radiation on sperm quantity and quality. In nature, levels of natural background radiation vary dramatically, and chronic effects of low-level background radiation exposure on spermatogenesis are poorly understood. The Chernobyl region offers a unique research opportunity for investigating effects of chronic low-level ionizing radiation on reproductive properties of wild organisms. We captured male bank voles (Myodes glareolus) from 24 locations in the Chernobyl …

Volume 4, Chapter 1-20: Aquatic And Wet Marchantiophyta, Class Marchantiopsida: Conocephalaceae, Part 1, Janice M. Glime

Bryophyte Ecology Subchapters

No abstract provided.

Volume 4, Chapter 18-5: Caves - Caverns, Janice M. Glime

Bryophyte Ecology Subchapters

No abstract provided.

An Investigation In The Mobilization Of Syringe Exchange Programs, Gina K. Carter, Emma Kroll, Gina Rae Mcclanahan, Rachel E. Rolf

All Electronic Theses and Dissertations

Injection drug use along with the opioid epidemic have contributed to many problems facing communities locally and nationally. Preventative and harm reduction measures are important for individual and public health due to the adverse outcomes of injection drug use such as increased transmission of hepatitis B, hepatitis C, and human immunodeficiency virus, as well as increased rates of opioid overdose (CDC, 2019; Strain, 2021). One preventative approach, syringe exchange programs (SEPs), have been shown to reduce the amount of contaminated needles and rate of infections while increasing access to additional resources and likelihood to attend a treatment program (Hagan et …

Remotely Detected Aboveground Plant Function Predicts Belowground Processes In Two Prairie Diversity Experiments, Jeannine Cavender-Bares, Anna K. Schweiger, John Gamon, Hamed Gholizadeh, Kimberly Helzer, Cathleen Lapadat, Michael D. Madritch, Philip A. Townsend, Zhihui Wang, Sarah E. Hobbie

School of Natural Resources: Faculty Publications

Imaging spectroscopy provides the opportunity to incorporate leaf and canopy optical data into ecological studies, but the extent to which remote sensing of vegetation can enhance the study of belowground processes is not well understood. In terrestrial systems, aboveground and belowground vegetation quantity and quality are coupled, and both influence belowground microbial processes and nutrient cycling. We hypothesized that ecosystem productivity, and the chemical, structural and phylogenetic-functional composition of plant communities would be detectable with remote sensing and could be used to predict belowground plant and soil processes in two grassland biodiversity experiments: the BioDIV experiment at Cedar Creek Ecosystem …

The Role Of Rare Avian Species For Spatial Resilience Of Shifting Biomes In The Great Plains Of North America, D. Angeler, C. Roberts, D. Twidwell Jr., C. Allen

School of Natural Resources: Faculty Publications

No abstract provided.

The Effect Of Ontogenetic Diet Shifts On Sagittal Otolith Shape Of European Perch, Perca Fluviatilis (Actinopterygii: Percidae) From Lake Ladik, Turkey, Oğuz Çöl, Savaş Yilmaz

Turkish Journal of Zoology

European perch undergoes several ontogenetic dietary shifts during its lifetime. The present study focused on the variability in otolith shape caused by ontogenetic dietary changes in this species. A total of 172 specimens (7.5 to 27.5 cm TL) were caught by local fishermen in Lake Ladik from April to November 2019. Shape indices (SIs) and elliptic Fourier coefficients (EFCs) were calculated for each otolith. To detect ontogenetic changes in otolith shape, SIs and EFCs were compared among the three defined size classes (I, II, and III). Size-related groups were distinguished by both SIs and EFCs. Otolith shape analysis was more …

Conceptual And Methodological Advances In Habitat-Selection Modeling: Guidelines For Ecology And Evolution, Joseph M. Northrup, Eric Vander Wal, Maegwin Bonar, John Fieberg, Michel P. Laforge, Martin Leclerc, Christina M. Prokopenko, Brian Gerber

Natural Resources Science Faculty Publications

Habitat selection is a fundamental animal behavior that shapes a wide range of ecological processes, including animal movement, nutrient transfer, trophic dynamics and population distribution. Although habitat selection has been a focus of ecological studies for decades, technological, conceptual and methodological advances over the last 20 yr have led to a surge in studies addressing this process. Despite the substantial literature focused on quantifying the habitat-selection patterns of animals, there is a marked lack of guidance on best analytical practices. The conceptual foundations of the most commonly applied modeling frameworks can be confusing even to those well versed in their …

Prevalence Of Ticks And Tick-Borne Pathogens In Mined Land Areas Of Southeast Kansas, Sydney Nippoldt, Hallee Belgium, Cassady Utley, Ayushee Dasgupta, Anuradha Ghosh

Posters

Ticks serve as vectors for many disease-causing pathogens, particularly bacterial and rickettsial pathogens. Diseases such as Lyme, Anaplasmosis, Ehrlichiosis, Rickettsiosis, Rocky Mountain Spotted Fever, and Tularemia can result after bitten by ticks. These tick-borne diseases are more common in the Great Plains region than is recognized. The present study aimed to conduct a three-year long surveillance on various tick species in the mined land area in Cherokee County (KS) using dry ice bait as well as flag-drag technique. Over several visits (June 2020 – November 2021) to the collection site, ticks were collected using both trapping methods. Detailed environmental data …

Access, Socioeconomic Environment, And Death From Covid-19 In Nebraska, He Bai, Michelle M. Schwedhelm, John-Martin Lowe, Rachel Lookadoo, Daniel R. Anderson, Abigail Lowe, James V. Lawler, M. Jana Broadhurst, David Brett-Major

Journal Articles: Epidemiology

Our study assesses whether factors related to healthcare access in the first year of the pandemic affect mortality and length of stay (LOS). Our cohort study examined hospitalized patients at Nebraska Medicine between April and October 2020 who were tested for SARS-CoV-2 and had a charted sepsis related diagnostic code. Multivariate logistic was used to analyze the odds of mortality and linear regression was used to calculate the parameter estimates of LOS associated with COVID-19 status, age, gender, race/ethnicity, median household income, admission month, and residential distance from definitive care. Among 475 admissions, the odds of mortality is greater among …

Role Of Grasses In Oviposition Site Selection By Malaria Vectors In Western Kenya, Eticha Bokore Getachew

All PhD Dissertations

Malaria continues to be among the top leading causes of illness and deaths in Africa. Its elimination is challenging in high transmission areas using insecticide-based intervention tools alone. Understanding the ecology and behaviour of disease vectors, including the olfactory cues, are essential for the development of novel, insecticide-free control tools. Recent work has highlighted that selected graminoid plants release volatile chemicals that attract malaria vectors. However, there is dearth of information on the type of dominant graminoid plants in habitats, nature of volatiles they emit and how volatiles affect behaviour of malaria vectors during oviposition sites selection. The objectives of …

Transforming Social Determinants To Educational Outcomes: Geospatial Considerations, Gary Szirony, S Banerjee, Mccune, Davis

Walden Faculty and Staff Publications

No abstract provided.

“Albertania” And “Egbenema”, Panding Biodiversity In The Oculatellaceae (Cyanobacteria)., Mildred Akagha

Masters Theses

To conduct molecular studies of cyanobacteria of Lagos, Nigeria, a total of eight soil/subaerial samples were collected in Lagos State, Nigeria, and used to isolate cyanobacterial cultures that were characterized microscopically, sequenced, and phylogenetically analyzed. Within the resulting set of cultures, a number of Synechococcales were observed, particularly belonging to Oculatellaceae. “Egbenema” and two new putative species of the recently described genus Albertania were found. Both genera belong to a supported clade within the Oculatellaceae that includes Trichotorquatus and Komarkovaea. The two new putative species of Albertania, “A. egbensis” and “A. latericola”, were from …

The Use Of Compression To Treat Phlebolymphedema Symptomology: A Systematic Review, Naomi Moran

Occupational Therapy Doctorate Capstone Projects

Background: There is a lack of clinical practice guidelines regarding treating phlebolymphedema symptomology. To facilitate client centered evidence-based practice, occupational therapists (OTs) who are Certified Lymphedema Therapists (CLTs) need disease specific evidence for treating phlebolymphedema. Finding available evidence regarding the use of complete decongestion therapy (CDT) for this population will support evidence-based practice. For this capstone compression usage is the one component of CDT that will be researched.

Purpose: A systematic review of evidence related to use of static compression for treatment of lower leg phlebolymphedema that is within the scope of a CLT who is not wound care certified. …

Ecological Risk Assessment For The Western Rock Lobster Resource : Workshop Procedure And Outcomes, R Stoklosa

Fisheries Occasional Publications

No abstract provided.

Inquiry: The Unversity Of Arkansas Undergraduate Research Journal - Volume 21 Issue 1 - Spring 2022, Inquiry Editors

Inquiry: The University of Arkansas Undergraduate Research Journal

No abstract provided.

Armed Conflicts, Hiv Testing, Hiv Prevalence, And High-Risk Sexual Behaviors: An Epidemiologic Analysis, Aissatou Thilo Ba

MUSC Theses and Dissertations

Armed conflicts have a wide array of consequences on health and behavior possibly serving a role in the spread of HIV, yet there is limited research on the quantitative association between armed conflicts and HIV. To address this gap in the literature, we evaluated the effect of armed conflicts on HIV testing, HIV prevalence, and high-risk sexual behaviors, using Demographic and Health Surveys data from 11 countries in Sub-Saharan Africa (years 2010 to 2018) and the Armed Conflict Location & Event Data. We hypothesized that armed conflicts, measured using number of conflict days, fatalities, or distance to nearest conflict, would …

Assessment Of Multidrug Resistance Among Tuberculosis Patients In Lesotho, Jerry Yakubu Yahaya

Walden Dissertations and Doctoral Studies

The emergence of multidrug-resistant tuberculosis (MDR-TB) jeopardizes the tremendous efforts in the fight against tuberculosis in Lesotho. To understand the occurrence of MDR-TB, it is important to identify the associated risk factors and how to address them. There is a literature gap on the sociodemographic risk factors associated with MDR-TB in Lesotho. This study assessed whether there is any significant association between age, employment, income, sex, education, place of residence and MDR-TB. The association between HIV and MDR-TB was also evaluated. Guided by the health belief model and social cognitive theory, a retrospective case-control study design and a proportionate stratified …

Comparing Prairie Management Methods’ Effects On Three Native Texan Grasses, Stephanie Howell

2022 Fall Honors Capstone Projects - Archive

The Texas Blackland Prairie habitat is under extreme threat. Currently, only 1% of the original prairie remains. Restoration efforts across the state have aimed to address these concerns. This research set out to test the efficacy of the methods used to restore prairies regarding three grasses. Big Bluestem, Andropogon gerardii, Little Bluestem, Schizachyrium scoparium, and Indiangrass, Sorghastrum nutans, were surveyed to establish their species abundance on two fields in North Texas. Based on their abundance and the history of each field, conclusions were drawn on the efficacy of the maintenance. Seeding was found to be inconsequential for A. gerardii and …