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Modeling Permafrost Dynamics And Water Balance Of Arctic Watersheds In A Changing Climate, Matvey Vladimirovich Debolskiy

Geosciences

Changes in climate across the Arctic in recent decades and especially the increase of near-surface air temperature promote signicant changes in key natural components of the Arctic including permafrost (defined as soil experiencing subzero temperature for more than two consecutive years). Recent borehole observations exhibit signicant increase in ground temperatures below the depths of seasonal variations. Modeling studies on a global scale suggest a steady decrease in area underlain by near-surface permafrost in the northern hemisphere in recent decades. Global projections for the next century predict further permafrost degradation depending on the greenhouse gas concentration trajectory. Permafrost degradation is not …

Effects Of Sea Ice Seasonal Evolution And Oil Properties On Crude Oil Upward Migration Through Sea Ice, Marc Oggier

Geosciences

Sea ice plays an essential role in polar ecosystems as a habitat for organisms at the base of the food web. Receding Arctic perennial sea ice, potential oil and gas reserves, and increasing industrial activities in the Arctic are likely to increase oil extraction and transport in the maritime Arctic. Despite a decrease in summer sea ice extent, Arctic waters remain covered with sea ice for much of the year, increasing the risk of an oil spill in and under Arctic sea ice. This dissertation addresses the need for a quantitative understanding of the timing of and constraints on oil …

Alaska Sea Energy: A Guide For Hydroponic Development, Daniel Blair-Madrid

Rural Development

This guide has been created to help those unfamiliar with the benefits of growing food with hydroponics to gain a deeper understanding of how such techniques can help rural communities with issues of food sovereignty and provide healthy fresh food through every season. It also includes input from communities participating in the project. Rural coastal communities in particular have a unique opportunity of combining both hydroponic techniques and ocean-based fertilization to maximize sustainable food production, thereby reducing reliance on imported food. The instructions contained within this guide will describe various types of hydroponic systems, recommendations for equipment, and how to …

A Bayesian Mixed Multistate Open-Robust Design Mark-Recapture Model To Estimate Heterogeneity In Transition Rates In An Imperfectly Detected System, Janelle J. Badger

Mathematics and Statistics

Multistate mark-recapture models have long been used to assess ecological and demographic parameters such as survival, phenology, and breeding rates by estimating transition rates among a series of latent or observable states. Here, we introduce a Bayesian mixed multistate open robust design mark recapture model (MSORD), with random intercepts and slopes to explore individual heterogeneity in transition rates and individual responses to covariates. We fit this model to simulated data sets to test whether the model could accurately and precisely estimate five parameters, set to known values a priori, under varying sampling schemes. To assess the behavior of the model …

The Reproductive Biology Of Yelloweye Rockfish (Sebastes Ruberrimus) In Prince William Sound And The Northern Gulf Of Alaska, Donald E. Arthur

Fisheries

Over the last half century, Yelloweye Rockfish Sebastes ruberrimus have experienced dramatic declines along the West Coast of the United States and British Columbia. Efforts have been made throughout the species' range to rebuild and sustainably manage stocks, including the introduction of a Statewide Rockfish Initiative by the State of Alaska, which intends to develop management strategies for Yelloweye Rockfish in the Gulf of Alaska. To support this effort and address information gaps in Yelloweye Rockfish reproductive biology throughout their range, I estimated important reproductive parameters and life history information for Yelloweye Rockfish in Prince William Sound and the Northern …

Spawning Migration Characteristics And Ecology Of Eulachon (Thaleichthys Pacificus), Robert E. Spangler

Fisheries

Eulachon Thaleichthys pacificus has experienced dramatic reductions in their distribution and abundance along the west coast of North America. This prompted the listing of this species as "Threatened" under the U.S. Endangered Species Act (ESA) of 1973 for populations found in the southern portions of their range, but not in Alaska. Key gaps in knowledge of Eulachon spawning ecology exist that impede population monitoring efforts and habitat protection. Currently, many monitoring efforts ignore estuaries as possible spawning habitat leading to inaccurate estimates of population abundance and trends. Furthermore, estuaries are not designated as critical spawning habitat for Eulachon. This is …

Sea Otter Diet Composition With Respect To Recolonization, Life History, And Season In Southern Southeast Alaska, Nicole Laroche

Fisheries

Until translocation efforts in the 1960s, sea otters (Enhydra lutris) were absent from Southeast Alaska due to extirpation by the fur trade in the 18th and 19th centuries. About 400 sea otters were reintroduced to six Southeast Alaska locations, including two sites near Prince of Wales Island in southern Southeast Alaska. The most recent US Fish and Wildlife Service population count, completed in 2012, estimated that about 25,000 sea otters inhabited Southeast Alaska. Sea otters will reduce invertebrate prey biomass when recolonizing an area. By quantifying sea otter diets and caloric intake according to recolonization patterns, we can better understand …

Zooplankton Community Composition In Relation To Environment And Juvenile Salmon Diets In Icy Strait, Southeast Alaska, Emily A. Fergusson

Fisheries

Zooplankton in the nearshore marine habitat function as an important prey resource for many pelagic fishes, are a major component of the lower tropic level, and serve as a vital ecosystem indicator. Understanding how the zooplankton community changes in response to fluctuations in biophysical factors is critical in a changing climate and is important to understanding the dynamics of commercially important upper-trophic level species that depend nutritionally on zooplankton. The Alaska Fisheries Science Center's Southeast Coastal Monitoring project has surveyed the pelagic ecosystem in eastern Icy Strait monthly from May to August since 1997 to understand how environmental variation affects …

Reproduction And Stress Response Endocrinology In Blue (Balaenoptera Musculus) And Gray (Eschrichtius Robustus) Whales, Valentina Melica

Fisheries

Identification of biomarkers that reflect physiological status is fundamental for assessing population health, as well as providing more accurate estimates of life history parameters. Blue (Balaenoptera musculus) and gray (Eschrichtius robustus) whale populations feed on lower trophic levels and migrate between the eastern Tropical and the eastern North Pacific Ocean. With increasing disturbances (e.g., changing environment and human activities), understanding the stress response, resultant coping mechanisms, and the subsequent effects on reproduction, is of growing importance. While extensive knowledge is available on photo-identification and ecology of these two species, information on physiology is limited and what exists is outdated. This …

Tracing Carbon Sources Of Southern Beaufort Sea And Chukchi Sea Polar Bears Using Stable Isotope Analyses, Malia E.K. Smith

Marine Biology

The Southern Beaufort Sea (SBS) polar bear (Ursus maritimus) subpopulation has declined in response to sea ice loss, while the Chukchi Sea (CS) subpopulation appears stable. The substantial population decline in the SBS subpopulation in recent years is concurrent with increases in the proportion of polar bears coming on shore, and the duration they spend there. Both of these changes have been associated with the loss of access to their primary sea ice habitat, which is mainly used as a platform to hunt seals. The first objective of this study was to determine if the SBS and CS polar bear …

An Interdisciplinary Analysis Of Health Equity As Evaluated Through The Covid-19 Response Concerning French-Speaking Refugees., Margaret Henning

Honors Theses

A collaborative approach is needed to understand the multifaceted medical bias and inequalities experienced by refugee camps of Francophone (French-speaking) nations. A combination of interest and passion for anthropology, medicine, and the French language presents a unique window of intersectionality to analyze this issue. Through a comprehensive review of literature published in both English and French languages, and connections with directors and leaders of refugee camps located in France and French-speaking African nations, we have elucidated a few examples of alarming medical bias experienced by both refugees and migrants. Although an exhaustive list of medical bias could be presented on …

Brain Α-Tocopherol Concentration Is Inversely Associated With Neurofibrillary Tangle Counts In Brain Regions Affected In Earlier Braak Stages: A Cross-Sectional Finding In The Oldest Old, J. Tanprasertsuk, T.M. Scott, M.A. Johnson, L.W. Poon, P.T. Nelson, A. Davey, J.L. Woodard, R. Vishwanathan, A.K. Barbey, K. Barger, X.-D. Wang, E.J. Johnson

Department of Nutrition and Health Sciences: Faculty Publications

Objectives: Higher vitamin E status has been associated with lower risk of Alzheimer’s disease (AD). However, evidence of the association of vitamin E concentration in neural tissue with AD pathologies is limited. Design: The cross-sectional relationship between the human brain concentrations of α- and γ-tocopherol and the severity of AD pathologies – neurofibrillary tangle (NFT) and neuritic plaque (NP) – was investigated. Setting & Participants: Brains from 43 centenarians (≥ 98 years at death) enrolled in the Phase III of the Georgia Centenarian Study were collected at autopsy. Measurements: Brain α- and γ-tocopherol concentrations (previously reported) …

Correction: Moxley, R.A., Et Al. Intimate Attachment Of Escherichia Coli O157:H7 To Urinary Bladder Epithelium In The Gnotobiotic Piglet Model. Microorganisms 2020, 8, 263, Rodney A. Moxley, Tom W. Bargar, Stephen D. Kachman, Diane R. Baker, David Francis

School of Veterinary and Biomedical Sciences: Faculty Publications

The authors wish to make the following corrections to this paper [1]: On page 2, the sentence that reads, “Hence, EHEC is a rare but established cause of HUS in children and adults.” should read, “Hence, EHEC is a rare but established cause of UTI-associated HUS in children and adults.” On page 4, the sentence that reads, “As noted previously, 14 of 126 (13.3%) piglets orally inoculated with EHEC O157:H7 strains developed mild to moderate purulent cystitis within 8 d PI [25] (Table 1).” should read, “As noted previously, 14 of 105 (13.3%) piglets orally inoculated with EHEC O157:H7 strains …

Experimental Manipulations To Test Theory-Driven Mechanisms Of Cognitive Behavior Therapy, Matthew W. Southward, Shannon Sauer-Zavala

Psychology Faculty Publications

Despite decades of randomized-controlled trials demonstrating the efficacy of cognitive-behavior therapy (CBT), the mechanisms by which CBT achieves its effects remain unclear. Here, we describe how one adaptive intervention, the sequential multiple assignment randomized trial (SMART), can be used to randomize patients at multiple decision points in treatment to draw stronger causal claims about mechanisms unfolding in the course of CBT. We illustrate this design using preliminary data and case examples from an ongoing SMART in which we are testing the role of aversive reactions to negative emotions as a hypothesized mechanism of change in the Unified Protocol. Finally, we …

Voice Of Guidance To Thousands Of Students, Linda Spargo Retires, Emily Howorth

University of Mississippi News

Fixture of the Lyceum served students and families, taught classes and supported university growth

Research From Around The World: Substance Use Disorder In The Us, Peggy Compton

SigmaCast [Podcast]

This episode we will be discussing the body of nursing research from Peggy Compton, PhD, RN, FAAN, a Sigma International Nurse Researcher Hall of Fame inductee in July of 2020 and an Associate Professor and van Ameringen Endowed Chair at the University of Pennsylvania School of Nursing.

Host: Matt Howard, DNP, RN, CEN, TCRN, CPEN, CPN: Director of Scholarship Resources, Sigma

Bioinformatics Metadata Extraction For Machine Learning Analysis, Zachary Tom

Master's Projects

Next generation sequencing (NGS) has revolutionized the biological sciences. Today, entire genomes can be rapidly sequenced, enabling advancements in personalized medicine, genetic diseases, and more. The National Center for Biotechnology Information (NCBI) hosts the Sequence Read Archive (SRA) containing vast amounts of valuable NGS data. Recently, research has shown that sequencing errors in conventional NGS workflows are key confounding factors for detecting mutations. Various steps such as sample handling and library preparation can introduce artifacts that affect the accuracy of calling rare mutations. Thus, there is a need for more insight into the exact relationship between various steps of the …

Small Cell Wireless Facilities And Public Rights-Of-Way, Assessing The Effects Of Public Chapter 819, Acts Of 2018, Tennessee. Advisory Commission On Intergovernmental Relations.

Miscellaneous Reports

No abstract provided.

Using Urban Ecology As A Transdisciplinary Approach For Teaching English Learners, Elvira G. Armas, Magaly Lavadenz, Eric G. Strauss

Cities and the Environment (CATE)

Teams from the Center for Equity for English Learners (CEEL) and the Center for Urban Resilience (CURes) at Loyola Marymount University collaborated on multi-year projects to implement the Urban Ecology for English Learners Projects designed to implement a professional learning and curriculum model to explicitly engage students in experiences where they learn science content through investigations of their local schoolyards and neighborhoods while simultaneously advancing language and literacy skills. This partnership empowers educators to leverage the interdisciplinary science of urban ecology and resilience as a way to democratize access and opportunity for English Learner students in diverse urban settings.

Native And Non-Native Sources Of Carbohydrate Correlate With Abundance Of An Invasive Ant, Lori Lach, Benjamin Hoffmann, Melinda L. Moir

Biosecurity Research Articles

Invasive species threaten many ecological communities and predicting which communities and sites are invasible remains a key goal of invasion ecology. Although invasive ants often reach high abundances in association with plant-based carbohydrate resources, the source and provenance of these resources are rarely investigated. We characterized carbohydrate resources across ten sites with a range of yellow crazy ant abundance in Arnhem Land, Australia and New Caledonia to determine whether yellow crazy ant (Anoplolepis gracilipes) abundance and trophic position correlate with carbohydrate availability, as well as the relative importance of native and non-native sources of carbohydrates to ant diet. …

Reference Gene Selection For Transcriptional Profiling In Cryptocercus Punctulatus, An Evolutionary Link Between Isoptera And Blattodea, Zhen Li, Xiangrui Li, Qingwen Zhang, Ling Yuan, Xuguo Zhou

Plant and Soil Sciences Faculty Publications

The subsocial life style and wood-feeding capability of Cryptocercus gives us an evolutionary key to unlock some outstanding questions in biology. With the advent of the Genomics Era, there is an unprecedented opportunity to address the evolution of eusociality and the acquisition of lignocellulases at the genetic level. However, to quantify gene expression, an appropriate normalization strategy is warranted to control for the non-specific variations among samples across different experimental conditions. To search for the internal references, 10 housekeeping genes from a gut transcriptome of a wood-feeding cockroach, Cryptocercus punctulatus, were selected as the candidates for the RT-qPCR analysis. The …

Does Covid-19 Contribute To Development Of Neurological Disease?, Arehally M. Mahalakshmi, Bipul Ray, Sunanda Tuladhar, Abid Bhat, Shasthara Paneyala, Duraisamy Patteswari, Meena K. Sakharkar, Hamdan Hamdan, David M. Ojcius, Srinivasa R. Bolla, Musthafa M. Essa, Saravana B. Chidambaram, M. Walid Qoronfleh

All Dugoni School of Dentistry Faculty Articles

Background: Although coronavirus disease 2019 (COVID-19) has been associated primarily with pneumonia, recent data show that the causative agent of COVID-19, the coronavirus severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), can infect a large number of vital organs beyond the lungs, such as the heart, kidneys, and the brain. Thus, there is evidence showing possible retrograde transmission of the virus from the olfactory epithelium to regions of the brain stem. Methods: This is a literature review article. The research design method is an evidence-based rapid review. The present discourse aim is first to scrutinize and assess the available literature on …

Effects Of Urbanization On Buff-Bellied Hummingbirds In Subtropical South Texas, John S. Brush, Timothy Brush, Alexis Racelis

Cities and the Environment (CATE)

Urbanization and its associated processes affect wildlife in a variety of ways. Understanding how this increasing land use type affects biological communities is important for conservation efforts. Hummingbirds (family Trochilidae) are one taxon that has showed positive responses to varying intensities of urban development. We surveyed for Buff-bellied Hummingbird (Amazilia yucatanensis), a species on its northern range-limits, in urban woodlands, residential, natural, and revegetated habitats. We examined how urbanization is affecting Buff-bellied Hummingbird populations in South Texas with point-count surveys and GIS analysis. We found that Buff-bellied Hummingbirds had greater relative abundances in urban settings when compared with …

Infection-Induced 5'-Half Molecules Of Trnahisgug Activate Toll-Like Receptor 7., Kamlesh Pawar, Megumi Shigematsu, Soroush Sharbati, Yohei Kirino

Computational Medicine Center Faculty Papers

Toll-like receptors (TLRs) play a crucial role in the innate immune response. Although endosomal TLR7 recognizes single-stranded RNAs, their endogenous RNA ligands have not been fully explored. Here, we report 5'-tRNA half molecules as abundant activators of TLR7. Mycobacterial infection and accompanying surface TLR activation up-regulate the expression of 5'-tRNA half molecules in human monocyte-derived macrophages (HMDMs). The abundant accumulation of 5'-tRNA halves also occur in HMDM-secreted extracellular vehicles (EVs); the abundance of EV-5'-tRNAHisGUG half molecules is >200-fold higher than that of the most abundant EV-microRNA (miRNA). Sequence identification of the 5'-tRNA halves using cP-RNA-seq revealed abundant and selective packaging …

Scholarly Communications In Knowledge Economy By A Premier Indian Chemical Sciences R&D Laboratory - Csir-Ncl : A Scientometric Evaluation, Gati Krushna Nayak, Sudam Charan Sahu, Vaishali S. Khaparde, Sudeshna Tripathi

Library Philosophy and Practice (e-journal)

This paper made an attempt to analyze publications of CSIR-NCL, Pune a reputed world class 70 years renowned Chemistry & Chemical Engineering R&D Laboratory during the last 10 years w.e.f. 2010-2019 as reflected in SCOPUS multidisciplinary international database. The total number of 5372 research publications have been downloaded and analyzed according to the objectives. This paper gives a complete view of the evaluation of research outcomes of the CSIR-NCL, Pune the productive and influential in innovative research. This paper vigorously tries to give a complete view of the evaluation of research outcomes of the CSIR-NCL, Pune in India that ought …

Open Drug Discovery Of Anti-Virals Critical For Canada’S Pandemic Strategy, Tania M. Bubela, E. Richard Gold, Vivek Goel, Max Morgan, Karen Mossman, Jason Nickerson, David Patrick, Aled Edwards

Office of the Provost

In the event of the current COVID-19 pandemic and in preparation for future pandemics, open science can support mission-oriented research and development, as well as commercialization. Open science shares skills and resources across sectors; avoids duplication and provides the basis for rapid and effective validation due to full transparency. It is a strategy that can adjust quickly to reflect changing incentives and priorities, because it does not rely on any one actor or sector. While eschewing patents, it can ensure high-quality drugs, low pricing, and access through existing regulatory mechanisms. Open science practices and partnerships decrease transaction costs, increase diversity …

Local Injections Of Β-Ngf Accelerates Endochondral Fracture Repair By Promoting Cartilage To Bone Conversion., Kevin O. Rivera, Fabrizio Russo, Ryan M. Boileau, Ryan E. Tomlinson, Theodore Miclau, Ralph S. Marcucio, Tejal A. Desai, Chelsea S. Bahney

Department of Orthopaedic Surgery Faculty Papers

There are currently no pharmacological approaches in fracture healing designed to therapeutically stimulate endochondral ossification. In this study, we test nerve growth factor (NGF) as an understudied therapeutic for fracture repair. We first characterized endogenous expression of Ngf and its receptor tropomyosin receptor kinase A (TrkA) during tibial fracture repair, finding that they peak during the cartilaginous phase. We then tested two injection regimens and found that local β-NGF injections during the endochondral/cartilaginous phase promoted osteogenic marker expression. Gene expression data from β-NGF stimulated cartilage callus explants show a promotion in markers associated with endochondral ossification such as Ihh, Alpl, …

Technoference: Parent Mobile Device Use And Implications For Children And Parent-Child Relationships., Brandon T. Mcdaniel Phd

Health Services and Informatics Research

The increase in the prevalence of smartphones and mobile devices has spurred changes in the caregiving environment of infants and young children, as phones and mobile devices are used at times during caregiving and in caregiving spaces. This use could create disruptions and cause distractions during parenting (termed technoference). This article summarizes the potential impacts on parent responsiveness and the experiences of infants and young children. Yet, it also warns that it is important to consider the reason for and type of parent use. Finally, the article ends with practical tips for working with parents concerning mobile device use.

Efficient Alternative Food Systems For Earth And Space, Kyle A. Alvarado

Engineering

Alternative foods are a source of human-edible calories derived from an unconventional source or process. This thesis includes two alternative foods: (i) crops grown under low-tech greenhouses in low sunlight environments and (ii) hydrogen-oxidizing bacteria (HOB) in space and Earth refuges, such as to repopulate the Earth. The purpose of alternative foods is to ensure food security for human survival. During a global catastrophic risk (GCR) scenario, such as nuclear winter or super volcanic eruption, the sun may be obscured, causing lack of crop production and therefore global food shortages. The purpose of this thesis was to improve the cost …

Threat, Opportunity, Cooperation, And Competition: Defining China's Integration Into The Arctic, Susan Elizabeth Bowman

Arctic and Northern Studies

Despite widespread attention to China's interest in the Arctic, little research examines how the country approaches the region. This thesis uses an inductive and qualitative approach to examine China's relationships with the eight Arctic states and major international institutions in the Arctic. This thesis asks: How is China integrating into the Arctic? How do Arctic states view China's integration? Through content analysis, narratives tell the story of China's relationship with the Arctic 8 and Arctic institutions. China's integration is explored on a fundamental level through the comparison of bilateral and multilateral relations, followed by more strategic undertones including threat, opportunity, …