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Optimization Of Photonic Nanojets Generated By Multilayer Microcylinders With A Genetic Algorithm, Yin Huang, Zhishen Zhen, Yuecheng Shen, Changjun Min, Georgios Veronis Jan 2019

Optimization Of Photonic Nanojets Generated By Multilayer Microcylinders With A Genetic Algorithm, Yin Huang, Zhishen Zhen, Yuecheng Shen, Changjun Min, Georgios Veronis

Faculty Publications

We employ a genetic algorithm coupled with Mie theory to optimize the magnetic field intensity profile of photonic nanojets (PNJs) generated by multilayer microcylinders at visible wavelengths in free space. We first optimize five-layer microcylinders to elongate the PNJs. We show that a properly designed five-layer microcylinder structure can generate an ultra-long PNJ with a beam length ∼ 107.5 times the illumination wavelength λ0. We then optimize five-layer microcylinders to narrow the waist of PNJs. We show that a PNJ with a full-width at half maximum waist of ∼ 0.22λ0 can be obtained outside the surface of the optimized microcylinder. …

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Predicting High-Dimensional Isotope Relationships From Diagnostic Fractionation Factors In Systems With Diffusional Mass Transfer, Yuyang He, Huiming Bao Jan 2019

Predicting High-Dimensional Isotope Relationships From Diagnostic Fractionation Factors In Systems With Diffusional Mass Transfer, Yuyang He, Huiming Bao

Faculty Publications

© 2018 American Chemical Society. A dual or multiple stable isotope relationship, for example, a trajectory in a δ-δ (or δ′-δ′) space, can be used to deduce the relationship of underlying diagnostic isotope fractionation factors (α) and therefore reveal the mechanism of a reaction process. While temporal data sampled from a closed-system can be treated by a Rayleigh distillation model, spatial data should be treated by a reaction-transport model. Owing to an apparent similarity between the temporal and spatial trajectories, the research community has often ignored this distinction and applied a Rayleigh distillation model to cases where a reaction-transport model …

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Predicting High-Dimensional Isotope Relationships From Diagnostic Fractionation Factors In Systems With Diffusional Mass Transfer, Yuyang He, Huiming Bao Jan 2019

Predicting High-Dimensional Isotope Relationships From Diagnostic Fractionation Factors In Systems With Diffusional Mass Transfer, Yuyang He, Huiming Bao

Faculty Publications

© 2018 American Chemical Society. A dual or multiple stable isotope relationship, for example, a trajectory in a δ-δ (or δ′-δ′) space, can be used to deduce the relationship of underlying diagnostic isotope fractionation factors (α) and therefore reveal the mechanism of a reaction process. While temporal data sampled from a closed-system can be treated by a Rayleigh distillation model, spatial data should be treated by a reaction-transport model. Owing to an apparent similarity between the temporal and spatial trajectories, the research community has often ignored this distinction and applied a Rayleigh distillation model to cases where a reaction-transport model …

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The Genetic And Epigenetic Effects Of Pre-Treatment With The Small Molecule Inhibitors Chir99021, Pd0325901, And Nup0178 On Bovine Fetal Fibroblast Cells, Laura Whitney Coley Jan 2019

The Genetic And Epigenetic Effects Of Pre-Treatment With The Small Molecule Inhibitors Chir99021, Pd0325901, And Nup0178 On Bovine Fetal Fibroblast Cells, Laura Whitney Coley

LSU Doctoral Dissertations

The ability to produce genetically superior livestock has established somatic cell nuclear transfer (SCNT) as an invaluable tool in commercial livestock production. Successful reprogramming of somatic cells towards pluripotency requires the epigenetic marks characteristic of the differentiated cell type first be erased in order to inactivate the somatic cell program and activate the embryonic program. Several small molecules have been shown to improve both the kinetics and efficiency of reprogramming. These chemical modifiers aid in overcoming the “roadblocks” encountered during the reprogramming process by inducing the necessary epigenetic modifications needed to silence the somatic cell genome and completely reactivate the …

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Atomic Resolution Of Cotton Cellulose Structure Enabled By Dynamic Nuclear Polarization Solid-State Nmr, Alex Kirui, Zhe Ling, Xue Kang, Malitha C. Dickwella Widanage, Frederic Mentink-Vigier, Alfred D. French, Tuo Wang Jan 2019

Atomic Resolution Of Cotton Cellulose Structure Enabled By Dynamic Nuclear Polarization Solid-State Nmr, Alex Kirui, Zhe Ling, Xue Kang, Malitha C. Dickwella Widanage, Frederic Mentink-Vigier, Alfred D. French, Tuo Wang

Faculty Publications

© 2018, Springer Nature B.V. Abstract: The insufficient resolution of conventional methods has long limited the structural elucidation of cellulose and its derivatives, especially for those with relatively low crystallinities or in native cell walls. Recent 2D/3D solid-state NMR studies of 13 C uniformly labeled plant biomaterials have initiated a re-investigation of our existing knowledge in cellulose structure and its interactions with matrix polymers but for unlabeled materials, this spectroscopic method becomes impractical due to limitations in sensitivity. Here, we investigate the molecular structure of unlabeled cotton cellulose by combining natural abundance 13 C– 13 C 2D correlation solid-state NMR …

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The Association Between Tea Consumption And Hyperhomocysteine In Chinese Hypertensive Patients, Jun Zhu, Wei Wang, Yaqing Xiong, Richard S. Cooper, Ramon Du Raza-Arvizu, Guichan Cao, Yi Wang, Peng Ji, Rongwen Bian, Jiaren Xu Jan 2019

The Association Between Tea Consumption And Hyperhomocysteine In Chinese Hypertensive Patients, Jun Zhu, Wei Wang, Yaqing Xiong, Richard S. Cooper, Ramon Du Raza-Arvizu, Guichan Cao, Yi Wang, Peng Ji, Rongwen Bian, Jiaren Xu

Faculty Publications

BACKGROUND There is no consistent evidence for the relationship between tea-drinking and hyperhomocysteine (hHcy). Because tea-drinking habit and hHcy have prevailed in Chinese hypertensive patients, this study aimed to investigate the association between hHcy and tea consumption in patients with hypertension. METHODS A total of 335 hypertensive participants were recruited from 7 communities. Demographic characteristics of participants were collected through face-to-face interviews using a standard questionnaire, whereas laboratory data were obtained within 1 week after patient recruitment. Multiple logistic regression analysis was performed to examine the association between tea consumption and hHcy in hypertensive patients. RESULTS Of the 335 patients, …

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Composition And Ecology Of Avian Communities Along Elevational Gradients In Borneo, Ryan Christian Burner Jan 2019

Composition And Ecology Of Avian Communities Along Elevational Gradients In Borneo, Ryan Christian Burner

LSU Doctoral Dissertations

A primary goal of ecology is to explain the diversity and distribution of organisms. Species distributions can be a function of abiotic factors, species interactions, dispersal limitations, and history, but the relative importance of these factors is widely debated. Elevational gradients are useful systems for studying these effects because many of these factors vary predictably with elevation, and because elevational gradients are replicated many times across the earth. However, few quantitative surveys of Southeast Asian bird communities have been conducted along elevational gradients. In this study, I surveyed birds using point counts and measured habitat and temperature across primary forest …

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High-Throughput Cultivation Of Bacterioplankton From The Gulf Of Mexico And Genomics Of The First Cultured Ld12 Representative, Michael Winslow Henson Jan 2019

High-Throughput Cultivation Of Bacterioplankton From The Gulf Of Mexico And Genomics Of The First Cultured Ld12 Representative, Michael Winslow Henson

LSU Doctoral Dissertations

Cultivation of microorganisms facilitates characterization of metabolism, interspecies dependencies, virus-host interactions, and other information necessary to resolve the functions and distribution of individual taxa. However, the metabolic and physiological capacities for the majority of microbes remains unresolved because of the lack of cultivated representatives for many groups limits our ability to test cultivation-independent observations. The Northern Gulf of Mexico offers a diversity of ecosystems under the continuous threat from natural and anthropogenic disturbances, yet little is known about its native bacterioplankton community. This dissertation sought to use high-throughput cultivation over three-years at six sites to isolate important coastal bacteria to …

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Atomic Force Microscopy Tip-Enhanced Laser Ablation, Fan Cao Jan 2019

Atomic Force Microscopy Tip-Enhanced Laser Ablation, Fan Cao

LSU Doctoral Dissertations

In the present work, an apertureless atomic force microscope (AFM) tip-enhanced laser ablation (TELA) system was developed and investigated. An AFM was coupled to an optical parametric oscillator (OPO) wavelength tunable laser for sample ablation with a submicron sampling size. The AFM was used to image the surface and hold the AFM tip 10 nm above the sample surface. The AFM tip is coated with a layer of gold with a thickness of 35 nm. The incident laser wavelength was tuned in the visible and near-infrared (IR) region and focused on the AFM tip. With the tip-enhancement effect, ablation craters …

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Etoxpred: A Machine Learning-Based Approach To Estimate The Toxicity Of Drug Candidates 11 Medical And Health Sciences 1115 Pharmacology And Pharmaceutical Sciences 03 Chemical Sciences 0305 Organic Chemistry 03 Chemical Sciences 0304 Medicinal And Biomolecular Chemistry, Limeng Pu, Misagh Naderi, Tairan Liu, Hsiao Chun Wu, Supratik Mukhopadhyay, Michal Brylinski Jan 2019

Etoxpred: A Machine Learning-Based Approach To Estimate The Toxicity Of Drug Candidates 11 Medical And Health Sciences 1115 Pharmacology And Pharmaceutical Sciences 03 Chemical Sciences 0305 Organic Chemistry 03 Chemical Sciences 0304 Medicinal And Biomolecular Chemistry, Limeng Pu, Misagh Naderi, Tairan Liu, Hsiao Chun Wu, Supratik Mukhopadhyay, Michal Brylinski

Faculty Publications

© 2019 The Author(s). Background: The efficiency of drug development defined as a number of successfully launched new pharmaceuticals normalized by financial investments has significantly declined. Nonetheless, recent advances in high-throughput experimental techniques and computational modeling promise reductions in the costs and development times required to bring new drugs to market. The prediction of toxicity of drug candidates is one of the important components of modern drug discovery. Results: In this work, we describe eToxPred, a new approach to reliably estimate the toxicity and synthetic accessibility of small organic compounds. eToxPred employs machine learning algorithms trained on molecular fingerprints to …

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Synthetic Glycolate Metabolism Pathways Stimulate Crop Growth And Productivity In The Field, Paul F. South, Amanda P. Cavanagh, Helen W. Liu, Donald R. Ort Jan 2019

Synthetic Glycolate Metabolism Pathways Stimulate Crop Growth And Productivity In The Field, Paul F. South, Amanda P. Cavanagh, Helen W. Liu, Donald R. Ort

Faculty Publications

y © The Authors, some rights reserved Photorespiration is required in C3 plants to metabolize toxic glycolate formed when ribulose-1,5-bisphosphate carboxylase-oxygenase oxygenates rather than carboxylates ribulose-1,5-bisphosphate. Depending on growing temperatures, photorespiration can reduce yields by 20 to 50% in C3 crops. Inspired by earlier work, we installed into tobacco chloroplasts synthetic glycolate metabolic pathways that are thought to be more efficient than the native pathway. Flux through the synthetic pathways was maximized by inhibiting glycolate export from the chloroplast. The synthetic pathways tested improved photosynthetic quantum yield by 20%. Numerous homozygous transgenic lines increased biomass productivity by >40% in replicated …

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Trophodynamics And Mercury Bioaccumulation In Reef And Open-Ocean Fishes From The Bahamas With A Focus On Two Teleost Predators, Oliver N. Shipley, Cheng Shiuan Lee, Nicholas S. Fisher, Georgiana Burruss, Michael G. Frisk, Edward J. Brooks, Zachary C. Zuckerman, Achim D. Herrmann, Daniel J. Madigan Jan 2019

Trophodynamics And Mercury Bioaccumulation In Reef And Open-Ocean Fishes From The Bahamas With A Focus On Two Teleost Predators, Oliver N. Shipley, Cheng Shiuan Lee, Nicholas S. Fisher, Georgiana Burruss, Michael G. Frisk, Edward J. Brooks, Zachary C. Zuckerman, Achim D. Herrmann, Daniel J. Madigan

Faculty Publications

© Inter-Research 2019. Identifying prey resource pools supporting fish biomass can elucidate trophic pathways of pollutant bioaccumulation. We used multiple chemical tracers (carbon [δ 13 C] and nitrogen [δ 15 N] stable isotopes and total mercury [THg]) to identify trophic pathways and measure contaminant loading in upper trophic level fishes residing at a reef and open-ocean interface near Eleuthera in the Exuma Sound, The Bahamas. We focused predominantly on the trophic pathways of mercury bioaccumulation in dolphinfish Coryphaena hippurus and wahoo Acanthocybium solandri, 2 commonly consumed pelagic sportfish in the region. Despite residing within close proximity to productive and extensive …

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Investigations Into Aspergillus Flavus Infection Of Corn And Regulation Of Aflatoxin Production By Volatiles And Biocontrol Strains, Rebecca R. Sweany Jan 2019

Investigations Into Aspergillus Flavus Infection Of Corn And Regulation Of Aflatoxin Production By Volatiles And Biocontrol Strains, Rebecca R. Sweany

LSU Doctoral Dissertations

Aspergillus flavus is an ascomycete fungus impacting agriculture, public and environmental health due to production of acutely-toxic, carcinogenic aflatoxins in oil seed crops, especially corn in Louisiana, and lung infections of immunocompromised patients resulting in a leading cause of AIDS patients’ deaths globally. The most effective aflatoxin mitigation strategy, biocontrol by atoxigenic A. flavus presents several concerns including: dissemination of a human pathogen, possible sexual reproduction and reliance on precise environmental conditions. Several aspects of A. flavus biology were investigated to potentially improve treatments. Studies investigated how genotypically diverse members within the A. flavus population interact with other population members …

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Toward The Impact Of Particulate Matter On Human Health: Evaluation Of Fluorescent Environmentally Persistent Free Radical (Epfr) Surrogates, Ansonia Badgett Jan 2019

Toward The Impact Of Particulate Matter On Human Health: Evaluation Of Fluorescent Environmentally Persistent Free Radical (Epfr) Surrogates, Ansonia Badgett

LSU Doctoral Dissertations

Environmentally persistent free radicals (EPFRs)—a newly discovered pollutant associated with particulate matter (PM)—form during combustion and thermal processes, such as the incineration of hazardous waste. Various chlorine- and hydroxy-substituted benzenes chemisorb on the surface of metal oxides (e.g., NiO, CuO, and Fe2O3) and then form EPFRs, stabilized radical species, as the result of the transfer of electrons between the adsorbate and the metal ion of the metal oxide. Previous studies have shown direct correlations between ultra-fine (d < 0.1 mm) particulate matter (PM0.1) exposure and adverse pulmonary health effects. PM0.1 has the potential …

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Design And Optimization Of An Ionizing-Radiation-Free Dental Imaging Scheme By Near Infrared Fluorescence, Thomas Hartzler Jan 2019

Design And Optimization Of An Ionizing-Radiation-Free Dental Imaging Scheme By Near Infrared Fluorescence, Thomas Hartzler

LSU Master's Theses

There is a global need for access to oral health care. Proper oral health care is necessary for physiological and psychological health, as well as social and economic issues. Major oral diseases that must be screened include caries, cracked teeth, and impacted molars. These diseases are screened and diagnosed using a variety of medical imaging methods, computed tomography (CT) X-ray being the most popular and efficient method. The challenges in screening with X-ray technology include financial and time cost as well as health risk, including radiation exposure induced cancer (REIC). This thesis summarizes research to explore the possibility of overcoming …

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Supporting Spartina: Interdisciplinary Perspective Shows Spartina As A Distinct Solid Genus, A Bortolus, P Adam, J B. Adams, M L. Ainouche, A Bortolus, M D. Bertness, T J. Bouma, J F. Bruno, I Cacador, J T. Carlton, J M. Castillo, C S. Costa, A J. Davy, L Deegan, B Duarte, E Figueroa, J Gerwein, A J. Gray, E D. Grosholz, S D. Hacker, A R. Hughes, E Mateos-Naranjo, I A. Mendelssohn, J T. Morris, L A. Munoz-Rodriguez, F J. Nieva, L A. Levin, B Li, W W. Liu, S C. Pennings, A Pickart, S Redondo-Gomez, D M. Richardson, A Salmon Jan 2019

Supporting Spartina: Interdisciplinary Perspective Shows Spartina As A Distinct Solid Genus, A Bortolus, P Adam, J B. Adams, M L. Ainouche, A Bortolus, M D. Bertness, T J. Bouma, J F. Bruno, I Cacador, J T. Carlton, J M. Castillo, C S. Costa, A J. Davy, L Deegan, B Duarte, E Figueroa, J Gerwein, A J. Gray, E D. Grosholz, S D. Hacker, A R. Hughes, E Mateos-Naranjo, I A. Mendelssohn, J T. Morris, L A. Munoz-Rodriguez, F J. Nieva, L A. Levin, B Li, W W. Liu, S C. Pennings, A Pickart, S Redondo-Gomez, D M. Richardson, A Salmon

Faculty Publications

In 2014, a DNA-based phylogenetic study confirming the paraphyly of the grass subtribe Sporobolinae proposed the creation of a large monophyletic genus Sporobolus, including (among others) species previously included in the genera Spartina, Calamovilfa, and Sporobolus. Spartina species have contributed substantially (and continue contributing) to our knowledge in multiple disciplines, including ecology, evolutionary biology, molecular biology, biogeography, experimental ecology, biological invasions, environmental management, restoration ecology, history, economics, and sociology. There is no rationale so compelling to subsume the name Spartina as a subgenus that could rival the striking, global iconic history and use of the name Spartina for over 200 …

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Net Land Gain Or Loss For Two Mississippi River Diversions: Caernarvon And Davis Pond, R. Eugene Turner, M Layne, Y Mo, E M. Swenson Jan 2019

Net Land Gain Or Loss For Two Mississippi River Diversions: Caernarvon And Davis Pond, R. Eugene Turner, M Layne, Y Mo, E M. Swenson

Faculty Publications

Coastal wetland restoration can be complex and expensive, so knowing long-term consequences makes it important to inform decisions about if, when, and where to conduct restoration. We determined temporal changes in land gain and loss in receiving basins and adjacent reference areas for two diversions of the Mississippi River in south Louisiana (Davis Pond and Caernarvon initiated in 1991 and 2002, respectively). Water from both diversions went into receiving basins with vegetated areas as did the adjoining reference areas. The results from two different types of satellite imagery analyses demonstrate a net land loss after diversions began. The results were …

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Advocating For Science: Amici Curiae Brief Of Wetland And Water Scientists In Support Of The Clean Water Rule, R C. Gardner, E Okuno, S Tai, M S. Fennessy, R C. Gardner, M L. Otte, M Palmer, J E. Perry, C Simenstad, B R. Tanner, D Tufford, R. Eugene Turner, K Work, S C. Yaich, J B. Zedler Jan 2019

Advocating For Science: Amici Curiae Brief Of Wetland And Water Scientists In Support Of The Clean Water Rule, R C. Gardner, E Okuno, S Tai, M S. Fennessy, R C. Gardner, M L. Otte, M Palmer, J E. Perry, C Simenstad, B R. Tanner, D Tufford, R. Eugene Turner, K Work, S C. Yaich, J B. Zedler

Faculty Publications

The Trump administration has proposed replacing the Clean Water Rule, a 2015 regulation that defined the statutory term waters of the United States to clarify the geographic jurisdiction of the Clean Water Act. Since its promulgation, the Clean Water Rule has been subjected to numerous judicial challenges. We submitted an amici curiae brief to the United States Court of Appeals for the Sixth Circuit, explaining why the Clean Water Rule, and its definition of waters of the United States, is scientifically sound. The definition of waters of the United States is a legal determination informed by science. The best available …

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Feedback Of Coastal Marshes To Climate Change: Long-Term Phenological Shifts, Y Mo, M S. Kearney, R. Eugene Turner Jan 2019

Feedback Of Coastal Marshes To Climate Change: Long-Term Phenological Shifts, Y Mo, M S. Kearney, R. Eugene Turner

Faculty Publications

Coastal marshes are important carbon sinks facing serious threats from climatic stressors. Current research reveals that the growth of individual marsh plants is susceptible to a changing climate, but the responses of different marsh systems at a landscape scale are less clear. Here, we document the multi-decadal changes in the phenology and the area of the extensive coastal marshes in Louisiana, USA, a representative of coastal ecosystems around the world that currently experiencing sea-level rise, temperature warming, and atmospheric CO2 increase. The phenological records are constructed using the longest continuous satellite-based record of the Earth's ecosystems, the Landsat data, and …

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Extent Of The Annual Gulf Of Mexico Hypoxic Zone Influences Microbial Community Structure, L.G. Campbell, J.C. Thrash, N.N. Rabalais, O.U. Mason Jan 2019

Extent Of The Annual Gulf Of Mexico Hypoxic Zone Influences Microbial Community Structure, L.G. Campbell, J.C. Thrash, N.N. Rabalais, O.U. Mason

Faculty Publications

No abstract provided.

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A Hydrodynamic Model For Galveston Bay And The Shelf In The Northern Gulf Of Mexico, J. Du, K. Park, J. Shen, Y.J. Zhang, X. Yu, F. Ye, Z. Wang, N.N. Rabalais Jan 2019

A Hydrodynamic Model For Galveston Bay And The Shelf In The Northern Gulf Of Mexico, J. Du, K. Park, J. Shen, Y.J. Zhang, X. Yu, F. Ye, Z. Wang, N.N. Rabalais

Faculty Publications

No abstract provided.

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Resuscitation Of Microalgae From Mississippi River Plume Sediments, Chase C. Chaplin, Marnie Tabor, Israel A. Marquez, Kanchan Maiti, Jeffrey W. Krause Jan 2019

Resuscitation Of Microalgae From Mississippi River Plume Sediments, Chase C. Chaplin, Marnie Tabor, Israel A. Marquez, Kanchan Maiti, Jeffrey W. Krause

Faculty Publications

No abstract provided.

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Effects Of Temperature And Salinity On Body Fluid Dynamics And Metabolism In The Estuarine Diamondback Terrapin (Malaclemys Terrapin), Amanda Southwood Williard, Leigh Anne Harden, T. Todd Jones, Stephen R. Midway Jan 2019

Effects Of Temperature And Salinity On Body Fluid Dynamics And Metabolism In The Estuarine Diamondback Terrapin (Malaclemys Terrapin), Amanda Southwood Williard, Leigh Anne Harden, T. Todd Jones, Stephen R. Midway

Faculty Publications

The diamondback terrapin is the only temperate turtle species that exclusively inhabits estuarine environments. Morphological, behavioral and physiological features contribute to the terrapin’s ability to regulate body fluid osmotic pressure in a euryhaline environment. Low integument permeability combined with aquatic–terrestrial shuttling behavior limits passive exchange of water and salts with the environment, and terrapins regulate active uptake of salts via alterations in drinking and feeding behavior. The lachrymal salt gland facilitates excretion of excess sodium (Na+) and chloride (Cl−) ions through active transport mechanisms. We investigated body fluid dynamics, oxygen consumption (V O2) and osmotic status …

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Biophysical Submesoscale Processes In Thewake Of Hurricane Ivan: Simulations And Satellite Observations, Travis A. Smith, Jason K. Jolliff, Nan D. Walker, Stephanie Anderson Jan 2019

Biophysical Submesoscale Processes In Thewake Of Hurricane Ivan: Simulations And Satellite Observations, Travis A. Smith, Jason K. Jolliff, Nan D. Walker, Stephanie Anderson

Faculty Publications

Tropical cyclone induced phytoplankton productivity is examined using a tropical cyclone version of the Coupled Ocean/Atmosphere Mesoscale Prediction System (COAMPS®). A four-component Nutrient-Phytoplankton-Detritus biological model is integrated into COAMPS to create a fully integrated air-ocean-wave-biology model. This study investigates the upper ocean physical and biological states before and after Hurricane Ivan traversed the central Gulf of Mexico, in mid-September 2004. Elevated concentrations of surface chlorophyll-a appear in the simulation two days after the passage of the tropical cyclone, and these results are spatially and temporally coherent with Moderate Resolution Imaging Spectroradiometer (MODIS) satellite data for this time period. Model results …

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Biogeochemical Response Of Apalachicola Bay And The Shelf Waters To Hurricane Michael Using Ocean Color Semi-Analytic/Inversion And Hydrodynamic Models, Eurico J. D’Sa, Ishan D. Joshi, Bingqing Liu, Dong S. Ko, Christopher L. Osburn, Thomas S. Bianchi Jan 2019

Biogeochemical Response Of Apalachicola Bay And The Shelf Waters To Hurricane Michael Using Ocean Color Semi-Analytic/Inversion And Hydrodynamic Models, Eurico J. D’Sa, Ishan D. Joshi, Bingqing Liu, Dong S. Ko, Christopher L. Osburn, Thomas S. Bianchi

Faculty Publications

Hurricanes are increasingly being recognized as important episodic drivers in ocean biogeochemical cycling; however, spatiotemporal response of their impacts on coastal and estuarine ecosystems are limited. Hurricane Michael, which made landfall just west of Apalachicola Bay (ApB) on October 10, 2018 as a Category 5 hurricane with sustained winds of 250 km h−1, caused widespread damage to the northwest Florida coast, and adverse effects on oyster reefs and water quality in ApB due to winds and coastal flooding associated with a strong storm surge. The impact of wind forcing and retreating storm surges on coastal and shelf biogeochemical …

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A 1-Dimensional Sympagic-Pelagic-Benthic Transport Model (Spbm): Coupled Simulation Of Ice, Water Column, And Sediment Biogeochemistry, Suitable For Arctic Applications, Shamil Yakubov, Philip Wallhead, Elizaveta Protsenko, Evgeniy Yakushev, Svetlana Pakhomova, Holger Brix Jan 2019

A 1-Dimensional Sympagic-Pelagic-Benthic Transport Model (Spbm): Coupled Simulation Of Ice, Water Column, And Sediment Biogeochemistry, Suitable For Arctic Applications, Shamil Yakubov, Philip Wallhead, Elizaveta Protsenko, Evgeniy Yakushev, Svetlana Pakhomova, Holger Brix

Faculty Publications

© 2019 by the authors. Marine biogeochemical processes can strongly interact with processes occurring in adjacent ice and sediments. This is especially likely in areas with shallow water and frequent ice cover, both of which are common in the Arctic. Modeling tools are therefore required to simulate coupled biogeochemical systems in ice, water, and sediment domains. We developed a 1D sympagic-pelagic-benthic transport model (SPBM) which uses input from physical model simulations to describe hydrodynamics and ice growth and modules from the Framework for Aquatic Biogeochemical Models (FABM) to construct a user-defined biogeochemical model. SPBM coupled with a biogeochemical model simulates …

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Overexpressing The H-Protein Of The Glycine Cleavage System Increases Biomass Yield In Glasshouse And Field-Grown Transgenic Tobacco Plants, Patricia E. López-Calcagno, Stuart Fisk, Kenny L. Brown, Simon E. Bull, Paul F. South, Christine A. Raines Jan 2019

Overexpressing The H-Protein Of The Glycine Cleavage System Increases Biomass Yield In Glasshouse And Field-Grown Transgenic Tobacco Plants, Patricia E. López-Calcagno, Stuart Fisk, Kenny L. Brown, Simon E. Bull, Paul F. South, Christine A. Raines

Faculty Publications

© 2018 The Authors. Plant Biotechnology Journal published by Society for Experimental Biology and The Association of Applied Biologists and John Wiley & Sons Ltd. Photorespiration is essential for C3 plants, enabling oxygenic photosynthesis through the scavenging of 2-phosphoglycolate. Previous studies have demonstrated that overexpression of the L- and H-proteins of the photorespiratory glycine cleavage system results in an increase in photosynthesis and growth in Arabidopsis thaliana. Here, we present evidence that under controlled environment conditions an increase in biomass is evident in tobacco plants overexpressing the H-protein. Importantly, the work in this paper provides a clear demonstration of the …

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A Comprehensive Evaluation Of Predictive Performance Of 33 Species Distribution Models At Species And Community Levels, Anna Norberg, Nerea Abrego, F. Guillaume Blanchet, Frederick R. Adler, Barbara J. Anderson, Jani Anttila, Miguel B. Araújo, Tad Dallas, David Dunson, Jane Elith, Scott D. Foster, Richard Fox, Janet Franklin, William Godsoe, Antoine Guisan, Bob O'Hara, Nicole A. Hill, Robert D. Holt, Francis K.C. Hui, Magne Husby, John Atle Kålås, Aleksi Lehikoinen, Miska Luoto, Heidi K. Mod, Graeme Newell, Ian Renner, Tomas Roslin, Janne Soininen, Wilfried Thuiller, Jarno Vanhatalo, David Warton, Matt White, Niklaus E. Zimmermann Jan 2019

A Comprehensive Evaluation Of Predictive Performance Of 33 Species Distribution Models At Species And Community Levels, Anna Norberg, Nerea Abrego, F. Guillaume Blanchet, Frederick R. Adler, Barbara J. Anderson, Jani Anttila, Miguel B. Araújo, Tad Dallas, David Dunson, Jane Elith, Scott D. Foster, Richard Fox, Janet Franklin, William Godsoe, Antoine Guisan, Bob O'Hara, Nicole A. Hill, Robert D. Holt, Francis K.C. Hui, Magne Husby, John Atle Kålås, Aleksi Lehikoinen, Miska Luoto, Heidi K. Mod, Graeme Newell, Ian Renner, Tomas Roslin, Janne Soininen, Wilfried Thuiller, Jarno Vanhatalo, David Warton, Matt White, Niklaus E. Zimmermann

Faculty Publications

© 2019 The Authors. Ecological Monographs published by Wiley Periodicals, Inc. on behalf of Ecological Society of America A large array of species distribution model (SDM) approaches has been developed for explaining and predicting the occurrences of individual species or species assemblages. Given the wealth of existing models, it is unclear which models perform best for interpolation or extrapolation of existing data sets, particularly when one is concerned with species assemblages. We compared the predictive performance of 33 variants of 15 widely applied and recently emerged SDMs in the context of multispecies data, including both joint SDMs that model multiple …

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Naringenin Promotes Thermogenic Gene Expression In Human White Adipose Tissue, Candida J. Rebello, Frank L. Greenway, Frank H. Lau, Yuan Lin, Jacqueline M. Stephens, William D. Johnson, Ann A. Coulter Jan 2019

Naringenin Promotes Thermogenic Gene Expression In Human White Adipose Tissue, Candida J. Rebello, Frank L. Greenway, Frank H. Lau, Yuan Lin, Jacqueline M. Stephens, William D. Johnson, Ann A. Coulter

Faculty Publications

© 2018 The Obesity Society Objective: Naringenin, a citrus flavonoid, prevents diet-induced weight gain and improves glucose and lipid metabolism in rodents. There is evidence that naringenin activates brown fat and increases energy expenditure in mice, but little is known about its effects in humans. The goal of this study was to examine the effects of naringenin on energy expenditure in adipose tissue. Methods: Human white adipocyte cultures (hADSC) and abdominal subcutaneous adipose tissue (pWAT) were treated with naringenin for 7 to 14 days. Expression (quantitative real-time polymerase chain reaction, immunoblotting) of candidate genes involved in thermogenesis and glucose metabolism …

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Fabrication And Characterization Of Thiol-Triacrylate Polymer Via Michael Addition Reaction For Biomedical Applications, Anoosha Forghani, Leah Garber, Cong Chen, Fariborz Tavangarian, Timothy B. Tighe, Ram Devireddy, John A. Pojman, Daniel Hayes Jan 2019

Fabrication And Characterization Of Thiol-Triacrylate Polymer Via Michael Addition Reaction For Biomedical Applications, Anoosha Forghani, Leah Garber, Cong Chen, Fariborz Tavangarian, Timothy B. Tighe, Ram Devireddy, John A. Pojman, Daniel Hayes

Faculty Publications

© 2018 IOP Publishing Ltd. Thiol-acrylate polymers have therapeutic potential as biocompatible scaffolds for bone tissue regeneration. Synthesis of a novel cyto-compatible and biodegradable polymer composed of trimethylolpropane ethoxylate triacrylate-trimethylolpropane tris (3-mercaptopropionate) (TMPeTA-TMPTMP) using a simple amine-catalyzed Michael addition reaction is reported in this study. This study explores the impact of molecular weight and crosslink density on the cyto-compatibility of human adipose derived mesenchymal stem cells. Eight groups were prepared with two different average molecular weights of trimethylolpropane ethoxylate triacrylate (TMPeTA 692 and 912) and four different concentrations of diethylamine (DEA) as catalyst. The materials were physically characterized by mechanical …

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