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Articles 23431 - 23460 of 302506

Full-Text Articles in Physical Sciences and Mathematics

Mgrre_Thinsections_Mgrre-43_8, Mgrre Nov 2022

Mgrre_Thinsections_Mgrre-43_8, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Mgrre-43_10, Mgrre Nov 2022

Mgrre_Thinsections_Mgrre-43_10, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Mgrre-43_12, Mgrre Nov 2022

Mgrre_Thinsections_Mgrre-43_12, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Mgrre-43_16, Mgrre Nov 2022

Mgrre_Thinsections_Mgrre-43_16, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Mgrre-44_1, Mgrre Nov 2022

Mgrre_Thinsections_Mgrre-44_1, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Mgrre-44_5, Mgrre Nov 2022

Mgrre_Thinsections_Mgrre-44_5, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Mgrre-44_6, Mgrre Nov 2022

Mgrre_Thinsections_Mgrre-44_6, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Mgrre-44_9, Mgrre Nov 2022

Mgrre_Thinsections_Mgrre-44_9, Mgrre

Thin Sections

No abstract provided.


Running Out Of Oxygen: Revealing The Interannual And Intra-Annual Dynamics Of Bottom Water Hypoxia In A Great Lakes Estuary Using Time-Series Observations, Experiments, And Analyses, Nate M. Dugener Nov 2022

Running Out Of Oxygen: Revealing The Interannual And Intra-Annual Dynamics Of Bottom Water Hypoxia In A Great Lakes Estuary Using Time-Series Observations, Experiments, And Analyses, Nate M. Dugener

Masters Theses

Bottom water hypoxia, a condition of low dissolved oxygen in the bottom waters, negatively effects lakes and freshwater and marine coastal estuaries globally. As climate change shifts climatological and ecological patterns, hypoxia continues to shift in duration and severity. In Muskegon Lake, Michigan, hypoxia occurs annually, restricting fish habitat, increasing cyanobacteria blooms, and disrupting ecological and socioeconomic prosperity. In the current study, we examined the duration and severity of hypoxia over a 11 years (2011-2021) utilizing data from the Muskegon Lake Observatory buoy (MLO, https://www.gvsu.edu/wri/buoy/). During 2021, we analyzed the dissolved oxygen (DO) concentrations observed by the MLO, conducted biweekly …


Mgrre_Thinsections_05_A_86, Mgrre Nov 2022

Mgrre_Thinsections_05_A_86, Mgrre

Thin Sections

No abstract provided.


Induced Seismicity In The Raton Basin And Global Variability Of The 410-Km Discontinuity, Margaret E. Glasgow Nov 2022

Induced Seismicity In The Raton Basin And Global Variability Of The 410-Km Discontinuity, Margaret E. Glasgow

Earth and Planetary Sciences ETDs

Natural processes like mantle convection and plate tectonics dominate Earth’s seismic structure. Recently human activities have increasingly influenced the deformation of the shallow crust. In this dissertation, passive source seismology was used to constrain seismic discontinuities in the mantle transition zone and seismogenic structures in induced earthquake settings. Using a novel sampling method and uniform processing approach, I found the 410-km discontinuity is thermally and compositionally variable. Using a machine- learning approach, I found the three main zones of seismicity in the Raton Basin consist of short faults or fault segments with variable orientations. The zone that hosted a Mw …


Search For New Particles In An Extended Higgs Sector With Four Bquarks In The Final State At √S=13tev, Cms Collaboration Nov 2022

Search For New Particles In An Extended Higgs Sector With Four Bquarks In The Final State At √S=13tev, Cms Collaboration

Department of Physics and Astronomy: Faculty Publications

A search for a massive resonance X decaying to a pair of spin-0 bosons φ that themselves decay to pairs of bottom quarks, is presented. The analysis is restricted to the mass ranges mφ from 25 to 100GeVand mX from 1 to 3TeV. For these mass ranges, the decay products of each φ boson are expected to merge into a single large-radius jet. Jet substructure and flavor identification techniques are used to identify these jets. The search is based on CERN LHC proton-proton collision data at √s=13 TeV, collected with the CMS detector in 2016–2018, corresponding to an …


Extracellular Dnases Facilitate Antagonism And Coexistence In Bacterial Competitor-Sensing Interference Competition, Aoi Ogawa, Christophe Golé, Maria Bermudez, Odrine Habarugira, Gabrielle Joslin, Taylor Mccain, Autumn Mineo, Jennifer Wise, Julie Xiong, Katherine Yan, Jan A.C. Vriezen Nov 2022

Extracellular Dnases Facilitate Antagonism And Coexistence In Bacterial Competitor-Sensing Interference Competition, Aoi Ogawa, Christophe Golé, Maria Bermudez, Odrine Habarugira, Gabrielle Joslin, Taylor Mccain, Autumn Mineo, Jennifer Wise, Julie Xiong, Katherine Yan, Jan A.C. Vriezen

Biological Sciences: Faculty Publications

Over the last 4 decades, the rate of discovery of novel antibiotics has decreased drastically, ending the era of fortuitous antibiotic discovery. A better understanding of the biology of bacteriogenic toxins potentially helps to prospect for new antibiotics. To initiate this line of research, we quantified antagonists from two different sites at two different depths of soil and found the relative number of antagonists to correlate with the bacterial load and carbon-to-nitrogen (C/N) ratio of the soil. Consecutive studies show the importance of antagonist interactions between soil isolates and the lack of a predicted role for nutrient availability and, therefore, …


Theoretical Spectra And Energetics For C-C3hc2h, L-C5h2, And Bipyramidal D3h C5h2, Alexandria G. Watrous, Brent R. Westbrook, Ryan C. Fortenberry Nov 2022

Theoretical Spectra And Energetics For C-C3hc2h, L-C5h2, And Bipyramidal D3h C5h2, Alexandria G. Watrous, Brent R. Westbrook, Ryan C. Fortenberry

Faculty and Student Publications

The recent astronomical detection of c-C3HC2H and l-C5H2 has led to increased interest in C5H2 isomers and their relative stability. The present work provides the first complete list of anharmonic vibrational spectral data with infrared intensities for three such isomers as well as including the first set of rotational data for the bipyramidal C5H2 isomer allowing for these molecules to serve as potential tracers of interstellar carbon. All three isomers have fundamental vibrational frequencies with at least one notably intense fundamental frequency. The l-C5H2 isomer has, by far, the highest intensities out of the three isomers at 2076.3 cm−1 (738 …


Mechanism Of Magic Number Nacl Cluster Formation From Electrosprayed Water Nanodroplets., Lars Konermann, Yousef Haidar Nov 2022

Mechanism Of Magic Number Nacl Cluster Formation From Electrosprayed Water Nanodroplets., Lars Konermann, Yousef Haidar

Chemistry Publications

Events taking place during electrospray ionization (ESI) can trigger the self-assembly of various nanoclusters. These products are often dominated by magic number clusters (MNCs) that have highly symmetrical structures. The literature rationalizes the dominance of MNCs by noting their high stability. However, this argument is not necessarily adequate because thermodynamics cannot predict the outcome of kinetically controlled reactions. Thus, the mechanisms responsible for MNC dominance remain poorly understood. Molecular dynamics (MD) simulations can provide atomistic insights into self-assembly reactions, but even this approach has thus far failed to provide pertinent answers. The current work overcomes this limitation. We focused on …


Transition-Metal Ions In Β-Ga2O3 Crystals: Identification Of Ni Acceptors, Timothy D. Gustafson, Nancy C. Giles, Brian C. Holloway, J. Jesenovec, B. L. Dutton, M. D. Mccluskey, Larry E. Halliburton Nov 2022

Transition-Metal Ions In Β-Ga2O3 Crystals: Identification Of Ni Acceptors, Timothy D. Gustafson, Nancy C. Giles, Brian C. Holloway, J. Jesenovec, B. L. Dutton, M. D. Mccluskey, Larry E. Halliburton

Faculty Publications

Excerpt: Transition-metal ions (Ni, Cu, and Zn) in β-Ga2O3 crystals form deep acceptor levels in the lower half of the bandgap. In the present study, we characterize the Ni acceptors in a Czochralski-grown crystal and find that their (0/−) level is approximately 1.40 eV above the maximum of the valence band.


Using Stable Isotope Analyses To Assess The Trophic Ecology Of Scleractinian Corals, Michael P. Lesser, Marc Slattery, Keir J. Macartney Nov 2022

Using Stable Isotope Analyses To Assess The Trophic Ecology Of Scleractinian Corals, Michael P. Lesser, Marc Slattery, Keir J. Macartney

School of Earth, Environmental, and Marine Sciences Faculty Publications and Presentations

Studies on the trophic ecology of scleractinian corals often include stable isotope analyses of tissue and symbiont carbon and nitrogen. These approaches have provided critical insights into the trophic sources and sinks that are essential to understanding larger-scale carbon and nitrogen budgets on coral reefs. While stable isotopes have identified most shallow water (<30 m) corals as mixotrophic, with variable dependencies on autotrophic versus heterotrophic resources, corals in the mesophotic zone (~30–150 m) transition to heterotrophy with increasing depth because of decreased photosynthetic productivity. Recently, these interpretations of the stable isotope data to distinguish between autotrophy and heterotrophy have been criticized because they are confounded by increased nutrients, reverse translocation of photosynthate, and changes in irradiance that do not influence photosynthate translocation. Here we critically examine the studies that support these criticisms and show that they are contextually not relevant to interpreting the transition to heterotrophy in corals from shallow to mesophotic depths. Additionally, new data and a re-analysis of previously published data show that additional information (e.g., skeletal isotopic analysis) improves the interpretation of bulk stable isotope data in determining when a transition from primary dependence on autotrophy to heterotrophy occurs in scleractinian corals.


Optimizing Lake Okeechobee Watershed Management And Reservoir Operations For Water Quality Improvement, Osama Mahrous Mossad Tarabih Nov 2022

Optimizing Lake Okeechobee Watershed Management And Reservoir Operations For Water Quality Improvement, Osama Mahrous Mossad Tarabih

USF Tampa Graduate Theses and Dissertations

Rivers around the globe have been altered as people have constructed water resources infrastructure to store water for different human needs, causing negative impacts on ecosystem processes and functions. Environmental flows have been introduced to restore deteriorated riverine ecosystems; however, environmental flows have not always been practical or adequate to restore environment conditions in rivers globally. Lake Okeechobee is a large subtropical lake that plays a pivotal role in South Florida water system providing various water demands for the surrounding communities as well as providing crucial services to the ecosystem of South Florida. However, hydrologic alterations and nutrient (phosphorus and …


Unoapi: Balancing Performance, Portability, And Productivity (P3) In Hpc Education, Konstantin Laufer, George K. Thiruvathukal Nov 2022

Unoapi: Balancing Performance, Portability, And Productivity (P3) In Hpc Education, Konstantin Laufer, George K. Thiruvathukal

Computer Science: Faculty Publications and Other Works

oneAPI is a major initiative by Intel aimed at making it easier to program heterogeneous architectures used in high-performance computing using a unified application programming interface (API). While raising the abstraction level via a unified API represents a promising step for the current generation of students and practitioners to embrace high- performance computing, we argue that a curriculum of well- developed software engineering methods and well-crafted exem- plars will be necessary to ensure interest by this audience and those who teach them. We aim to bridge the gap by developing a curriculum—codenamed UnoAPI—that takes a more holistic approach by looking …


Functional Consequences Of Extended High Frequency Hearing Impairment: Evidence From The Speech, Spatial, And Qualities Of Hearing Scale, Udit Saxena, Srikanta K. Mishra, Hansapani Rodrigo, Moumita Choudhury Nov 2022

Functional Consequences Of Extended High Frequency Hearing Impairment: Evidence From The Speech, Spatial, And Qualities Of Hearing Scale, Udit Saxena, Srikanta K. Mishra, Hansapani Rodrigo, Moumita Choudhury

School of Mathematical and Statistical Sciences Faculty Publications and Presentations

Hearing loss in the extended high frequencies, despite a normal audiogram, could affect speech-in-noise recognition. However, it is not known if extended high frequency (EHF) hearing loss is associated with everyday listening and communication deficits. The present study aimed to determine the functional effects of impaired EHF hearing among adults using the Speech, Spatial, and Qualities of Hearing Scale (SSQ). A secondary objective was to evaluate the relationship between objective (speech-in-noise recognition) and subjective (SSQ) measures of hearing function. Listeners with EHF hearing loss provided lower SSQ ratings compared with their EHF-normal counterparts. The lower ratings could not be attributed …


Extension Of Fundamental Transversals And Euler’S Polyhedron Theorem, Joy Marie D'Andrea Nov 2022

Extension Of Fundamental Transversals And Euler’S Polyhedron Theorem, Joy Marie D'Andrea

Annual Symposium on Biomathematics and Ecology Education and Research

No abstract provided.


Solving Mathematical Epidemiology Models Via Neural Nets Tuned By Mesh Adaptive Direct Search, Muhammad Jalil Ahmad Nov 2022

Solving Mathematical Epidemiology Models Via Neural Nets Tuned By Mesh Adaptive Direct Search, Muhammad Jalil Ahmad

Annual Symposium on Biomathematics and Ecology Education and Research

No abstract provided.


A Quantum Mechanics Approach To Modeling The Dynamics Of Gene Regulatory Networks And A Susceptible/Infectious (Si) Population, Leon Arriola Nov 2022

A Quantum Mechanics Approach To Modeling The Dynamics Of Gene Regulatory Networks And A Susceptible/Infectious (Si) Population, Leon Arriola

Annual Symposium on Biomathematics and Ecology Education and Research

No abstract provided.


A Quantum Mechanics Approach To Modeling The Dynamics Of Gene Regulatory Networks And A Susceptible/Infectious (Si) Population, Leon Arriola Nov 2022

A Quantum Mechanics Approach To Modeling The Dynamics Of Gene Regulatory Networks And A Susceptible/Infectious (Si) Population, Leon Arriola

Annual Symposium on Biomathematics and Ecology Education and Research

No abstract provided.


Solving Clostridioides Difficile: Mathematical Models Of Transmission And Control In Healthcare Settings, Cara Sulyok, Max Lewis, Laila Mahrat, Brittany Stephenson, Malen De La Fuente Arruabarrena, David Kovalev, Justyna Sliwinska Nov 2022

Solving Clostridioides Difficile: Mathematical Models Of Transmission And Control In Healthcare Settings, Cara Sulyok, Max Lewis, Laila Mahrat, Brittany Stephenson, Malen De La Fuente Arruabarrena, David Kovalev, Justyna Sliwinska

Annual Symposium on Biomathematics and Ecology Education and Research

No abstract provided.


Evaluation Of Circular Logistic Regression Models With Asymmetrical Link Functions, Feridun Tasdan Nov 2022

Evaluation Of Circular Logistic Regression Models With Asymmetrical Link Functions, Feridun Tasdan

Annual Symposium on Biomathematics and Ecology Education and Research

No abstract provided.


Substrate Transport In Cylindrical Multi-Capillary Beds With Axial Diffusion, Liang Sun, Eric Choi Nov 2022

Substrate Transport In Cylindrical Multi-Capillary Beds With Axial Diffusion, Liang Sun, Eric Choi

Annual Symposium on Biomathematics and Ecology Education and Research

No abstract provided.


An Implementation Of The Method Of Moments On Chemical Systems With Constant And Time-Dependent Rates, Emmanuel Adara Nov 2022

An Implementation Of The Method Of Moments On Chemical Systems With Constant And Time-Dependent Rates, Emmanuel Adara

Annual Symposium on Biomathematics and Ecology Education and Research

No abstract provided.


Comparison Of Assessment And Teaching Modalities For A Quantitative Biology Course, Dmitry Kondrashov Nov 2022

Comparison Of Assessment And Teaching Modalities For A Quantitative Biology Course, Dmitry Kondrashov

Annual Symposium on Biomathematics and Ecology Education and Research

No abstract provided.


Physics-Informed Neural Networks For Informed Vaccine Distribution In Heterogeneously Mixed Populations, Alvan Arulandu, Padmanabhan Seshaiyer Nov 2022

Physics-Informed Neural Networks For Informed Vaccine Distribution In Heterogeneously Mixed Populations, Alvan Arulandu, Padmanabhan Seshaiyer

Annual Symposium on Biomathematics and Ecology Education and Research

No abstract provided.