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The Behavior Of Partially Coherent Twisted Space-Time Beams In Atmospheric Turbulence, Milo W. Hyde Iv Jan 2023

The Behavior Of Partially Coherent Twisted Space-Time Beams In Atmospheric Turbulence, Milo W. Hyde Iv

Faculty Publications

We study how atmospheric turbulence affects twisted space-time beams, which are non-stationary random optical fields whose space and time dimensions are coupled with a stochastic twist. Applying the extended Huygens–Fresnel principle, we derive the mutual coherence function of a twisted space-time beam after propagating a distance z through atmospheric turbulence of arbitrary strength. We specialize the result to derive the ensemble-averaged irradiance and discuss how turbulence affects the beam’s spatial size, pulse width, and space-time twist. Lastly, we generate, in simulation, twisted space-time beam field realizations and propagate them through atmospheric phase screens to validate our analysis.


Nonconsensual Family Obligations, Emily Stolzenberg Jan 2023

Nonconsensual Family Obligations, Emily Stolzenberg

Faculty Publications

Even as the pandemic has both highlighted and compounded the challenges many U.S. families face in meeting their members’ basic needs, efforts to expand public subsidies for caretaking have gained little traction. Scholars have identified many historical and practical reasons for Americans’ entrenched skepticism toward the welfare state. Ideas matter, too, and this Article uncovers and critiques one that works to limit collective financial responsibility for families: the conviction that family support obligations must be legitimated through consent.

In family law, as in liberal political theory, consent works to reconcile state regulation with individual freedom. But because consent is a …


A Predator-Prey Biological Model With Combined Birth Rates, Self-Limitation And Competition Terms, Joon Hyuk Kang, Lucinda Ford Jan 2023

A Predator-Prey Biological Model With Combined Birth Rates, Self-Limitation And Competition Terms, Joon Hyuk Kang, Lucinda Ford

Faculty Publications

The purpose of this paper is to give sufficient conditions for the existence and uniqueness of positive solutions to a rather general type of elliptic system of the Dirichlet problem on a bounded domain Ω in Rn. Also considered are the effects of perturbations on the coexistence state and uniqueness. The techniques used in this paper are super-sub solutions method, eigenvalues of operators, maximum principles, spectrum estimates, inverse function theory, and general elliptic theory. The arguments also rely on some detailed properties for the solution of logistic equations. These results yield an algebraically computable criterion for the positive coexistence of …


Nitrous Oxide Production And Isotopomer Composition By Fungi Isolated From Salt Marsh Sediments, Birch Maxwell Lazo-Murphy, Samantha Larson, Sydney Staines, Heather Bruck, Julianne Mchenry, Annie Bourbonnais, Xuefeng Peng Dec 2022

Nitrous Oxide Production And Isotopomer Composition By Fungi Isolated From Salt Marsh Sediments, Birch Maxwell Lazo-Murphy, Samantha Larson, Sydney Staines, Heather Bruck, Julianne Mchenry, Annie Bourbonnais, Xuefeng Peng

Faculty Publications

The emissions of nitrous oxide (N2O), a potent greenhouse gas and ozone-depleting agent, have been steadily increasing from coastal environments, such as salt marsh sediments, as a result of anthropogenic nutrient loading. Biotic processes, including nitrification and denitrification, are the largest sources of N2O from salt marsh sediments. While it is assumed that the bulk of N2O from salt marsh sediment is produced by nitrification and bacterial denitrification, recent reports suggest fungal denitrification may contribute significantly. In this study, four fungi capable of growth under sulfidic conditions were isolated from salt marsh sediments in …


A Tree-Ring Record Of Historical Fire Activity In A Piedmont Longleaf Pine (Pinus Palustris Mill.) Woodland In North Carolina, Usa, Monica T. Rother, Thomas W. Patterson, Paul A. Knapp, Tyler J. Mitchell, Nell Allen Dec 2022

A Tree-Ring Record Of Historical Fire Activity In A Piedmont Longleaf Pine (Pinus Palustris Mill.) Woodland In North Carolina, Usa, Monica T. Rother, Thomas W. Patterson, Paul A. Knapp, Tyler J. Mitchell, Nell Allen

Faculty Publications

CO2 capture from industrial point source waste streams represents an important need for achieving the global goal of carbon-neutrality. Compared with conventional liquid sorbents, solid sorbents can exhibit several distinct advantages, including enhanced lifetime and reduced energy consumption for sorbent regeneration. Considering that reducing CO2 emission is a great challenge, reaching approximately 37 billion metric tons just in 2021, ideal sorbent solutions should not only exhibit a high capture performance but also enable large scale manufacturing using low-cost precursors and simple processes. In this work, we demonstrate the use of a commodity polymer, polystyrene-block-polyisoprene-block-polystyrene …


Surface Modification Of 3d Printed Microfluidic Devices For Controlled Wetting In Two-Phase Flow, Chandler A. Warr, Nicole G. Crawford, Gregory P. Nordin, William G. Pitt Dec 2022

Surface Modification Of 3d Printed Microfluidic Devices For Controlled Wetting In Two-Phase Flow, Chandler A. Warr, Nicole G. Crawford, Gregory P. Nordin, William G. Pitt

Faculty Publications

Microfluidic devices (MFDs) printed in 3-D geometry using digital light projection to polymerize monomers often have surfaces that are not as hydrophobic as MFDs made from polydimethylsiloxane. Droplet microfluidics in these types of devices are subject to droplet adhesion and aqueous spreading on less hydrophobic MFD surfaces. We have developed a post-processing technique using hydrophobic monomers that renders the surfaces of these devices much more hydrophobic. The technique is fast and easy, and involves flowing monomer without initiator into the channels and then exposing the entire device to UV light that generates radicals from the initiator molecules remaining in the …


Association Of Chlorhexidine Use And Scaling And Root Planing With Birth Outcomes In Pregnant Individuals With Periodontitis: A Systematic Review And Meta-Analysis, Maxwell Akonde, Rajat Das Gupta, Maxwell Akonde, Mark Reynolds, Stephanie Smith-Warner, Jihong Liu Sc.D., Fouzia Tarannum, James Beck, Donald Mattison Dec 2022

Association Of Chlorhexidine Use And Scaling And Root Planing With Birth Outcomes In Pregnant Individuals With Periodontitis: A Systematic Review And Meta-Analysis, Maxwell Akonde, Rajat Das Gupta, Maxwell Akonde, Mark Reynolds, Stephanie Smith-Warner, Jihong Liu Sc.D., Fouzia Tarannum, James Beck, Donald Mattison

Faculty Publications

Importance Chlorhexidine mouthwash enhances treatment effects of conventional periodontal treatment, but data on chlorhexidine as a source of heterogeneity in meta-analyses assessing the treatment of maternal periodontitis in association with birth outcomes are lacking.

Objective To assess possible heterogeneity by chlorhexidine use in randomized clinical trials (RCTs) evaluating the effect of periodontal treatment (ie, scaling and root planing [SRP]) vs no treatment on birth outcomes.

Data Sources Cochrane Oral Health’s Trials Register, Cochrane Pregnancy and Childbirth’s Trials Register, Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE Ovid, Embase Ovid, LILACS BIREME Virtual Health Library (Latin American and Caribbean Health Science …


Association Of Chlorhexidine Use And Scaling And Root Planing With Birth Outcomes In Pregnant Individuals With Periodontitis: A Systematic Review And Meta-Analysis, Anwar T. Nerchant, Rajat Das Gupta, Maxwell Akonde, Mark Reynolds, Stephanie Smith-Warner, Jihong Liu, Fouzia Tarannum, James Beck, Donald Mattison Dec 2022

Association Of Chlorhexidine Use And Scaling And Root Planing With Birth Outcomes In Pregnant Individuals With Periodontitis: A Systematic Review And Meta-Analysis, Anwar T. Nerchant, Rajat Das Gupta, Maxwell Akonde, Mark Reynolds, Stephanie Smith-Warner, Jihong Liu, Fouzia Tarannum, James Beck, Donald Mattison

Faculty Publications

Importance Chlorhexidine mouthwash enhances treatment effects of conventional periodontal treatment, but data on chlorhexidine as a source of heterogeneity in meta-analyses assessing the treatment of maternal periodontitis in association with birth outcomes are lacking.

Objective To assess possible heterogeneity by chlorhexidine use in randomized clinical trials (RCTs) evaluating the effect of periodontal treatment (ie, scaling and root planing [SRP]) vs no treatment on birth outcomes.

Data Sources Cochrane Oral Health’s Trials Register, Cochrane Pregnancy and Childbirth’s Trials Register, Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE Ovid, Embase Ovid, LILACS BIREME Virtual Health Library (Latin American and Caribbean Health Science …


A Remembrance And Reflection On Dwain Ford's Teaching Philosophy, Desmond Hartwell Murray Dec 2022

A Remembrance And Reflection On Dwain Ford's Teaching Philosophy, Desmond Hartwell Murray

Faculty Publications

No abstract provided.


Predicted Episode Of Submarine Groundwater Discharge Onto The South Carolina, Usa, Continental Shelf And Its Effect On Dissolved Oxygen, Wilson S. Moore, Jacob Vincent, James L. Pickney, Alicia M. Wilson Dec 2022

Predicted Episode Of Submarine Groundwater Discharge Onto The South Carolina, Usa, Continental Shelf And Its Effect On Dissolved Oxygen, Wilson S. Moore, Jacob Vincent, James L. Pickney, Alicia M. Wilson

Faculty Publications

Submarine groundwater discharge (SGD) may directly influence the dissolved oxygen (DO) content of coastal bottom waters. Here, we report a predicted episode of enhanced SGD that caused low DO concentrations on the South Carolina continental shelf. The prediction model linked episodes of SGD to upwelling-favorable winds. The data revealed these waters were a factor of 2–6 higher in 226Ra and 228Ra compared to typical bottom water values and were significantly depleted in DO (<130 μM). The tight 228Ra:226Ra correlation of these data was similar to values during a strong hypoxic event off SC in 2012. Water ages from …


Uniqueness Of Steady State Positive Solutions To A General Elliptic System With Dirichlet Boundary Conditions, Joon Hyuk Kang Dec 2022

Uniqueness Of Steady State Positive Solutions To A General Elliptic System With Dirichlet Boundary Conditions, Joon Hyuk Kang

Faculty Publications

The purpose of this paper is to give conditions for the uniqueness of positive solution to a rather general type of elliptic system of the Dirichlet problem on a bounded domain Ω in Rn. Also considered are the effects of perturbations on the coexistence state and uniqueness.


Association Of Fabry Disease With Hearing Loss, Tinnitus, And Sudden Hearing Loss: A Nationwide Population-Based Study, Yen-Fu Cheng, Sudha Xirasagar Mbbs., Ph.D., Chin-Shyan Chen, Dau-Ming Niu, Herng-Ching Lin Dec 2022

Association Of Fabry Disease With Hearing Loss, Tinnitus, And Sudden Hearing Loss: A Nationwide Population-Based Study, Yen-Fu Cheng, Sudha Xirasagar Mbbs., Ph.D., Chin-Shyan Chen, Dau-Ming Niu, Herng-Ching Lin

Faculty Publications

Hearing loss and the related otologic manifestations are receiving increased scrutiny as significant causes of morbidity in Fabry disease. However, the relative risks of auditory deficits among patients with Fabry disease relative to the general population without a diagnosis of Fabry disease have not been studied. This study aims to explore the associations between Fabry disease and hearing-related manifestations using a nationwide population-based dataset. We identified study patients for this cross-sectional study from the 2015–2017 claims databases of the Taiwan Longitudinal Health Insurance Database 2005. We first identified 2312 patients aged over 20 years with a diagnosis of Fabry disease. …


Enhanced Structural Control Of Soft-Templated Mesoporous Inorganic Thin Films By Inert Processing Conditions, Maximilliano Jesus Jara Fornerod, Alberto Alvarez-Fernandez, Eric R. Williams, Miximillian W.A. Skoda, Beatriz Prieto-Simon, Nicolas H. Voelcker, Morgan Stefik, Marc-Oliver Coppens, Stefan Guldin Dec 2022

Enhanced Structural Control Of Soft-Templated Mesoporous Inorganic Thin Films By Inert Processing Conditions, Maximilliano Jesus Jara Fornerod, Alberto Alvarez-Fernandez, Eric R. Williams, Miximillian W.A. Skoda, Beatriz Prieto-Simon, Nicolas H. Voelcker, Morgan Stefik, Marc-Oliver Coppens, Stefan Guldin

Faculty Publications

Mesoporous thin films are widely used for applications in need of high surface area and efficient mass and charge transport properties. A well-established fabrication process involves the supramolecular assembly of organic molecules (e.g., block copolymers and surfactants) with inorganic materials obtained by sol-gel chemistry. Typically, subsequent calcination in air removes the organic template and reveals the porous inorganic network. A significant challenge for such coatings is the anisotropic shrinkage due to the volume contraction related to solvent evaporation, inorganic condensation, and template removal, affecting the final porosity as well as pore shape, size, arrangement, and accessibility. Here, we show that …


Using Solar Radiation Data In Soil Moisture Diagnostic Equation For Estimating Root-Zone Soil Moisture, Olumide Omotere, Feifei Pan, Lei Wang Dec 2022

Using Solar Radiation Data In Soil Moisture Diagnostic Equation For Estimating Root-Zone Soil Moisture, Olumide Omotere, Feifei Pan, Lei Wang

Faculty Publications

The soil moisture daily diagnostic equation (SMDE) evaluates the relationship between the loss function coefficient and the summation of the weighted average of precipitation. The loss function coefficient uses the day of the year (DOY) to approximate the seasonal changes in soil moisture loss for a given location. Solar radiation is the source of the energy that drives the complex and intricates of the earth-atmospheric processes and biogeochemical cycles in the environment. Previous research assumed DOY is the approximation of other environmental factors (e.g., temperature, wind speed, solar radiation). In this article, two solar radiation parameters were introduced, i.e., the …


Pre-Existing Diabetes Mellitus, Hypertension And Kidneydisease As Risk Factors Of Pre-Eclampsia: A Disease Of Theories And Its Association With Genetic Polymorphism, Abdullah Salah Alanazi, Francis Victor, Kanwal Rehman, Yusra Habib Khan, Ismaeel Yunusa Ph.D., Abdulaziz Alzarea, Muhammad Sajid Hamid Akash, Tauqeer Hussain Mallhi Dec 2022

Pre-Existing Diabetes Mellitus, Hypertension And Kidneydisease As Risk Factors Of Pre-Eclampsia: A Disease Of Theories And Its Association With Genetic Polymorphism, Abdullah Salah Alanazi, Francis Victor, Kanwal Rehman, Yusra Habib Khan, Ismaeel Yunusa Ph.D., Abdulaziz Alzarea, Muhammad Sajid Hamid Akash, Tauqeer Hussain Mallhi

Faculty Publications

Pre-existing diabetes, hypertension and kidney disorders are prominent risk factors of pre-eclampsia (PE). It is a multifactorial pregnancy disorder associated with high blood pressure, proteinuria, and multiorgan failure, which develops after the 20th week of pregnancy. It is one of the most feared pregnancy disorders, as it consumes thousands of fetomaternal lives per annum. According to clinical and pathological studies, the placenta appears to be a key player in the pathogenesis of PE; however, the exact origin of this disorder is still under debate. Defective placentation and angiogenesis are the hallmarks of PE progression. This angiogenic imbalance, together with maternal …


Genetic Variation Among Populations Of, And Evidence Of Deep Divergence Within, The Rio Grande Chirping Frog, Eleutherodactylus Campi (Anura: Eleutherodactylidae), Kebede Beshera, Avery A. Williams Mr., John A. Hamlin Dr., Peter J. Bergeaux Mr., Christian C. Morgan Dr., Aubrey N. Armstrong Ms. Dec 2022

Genetic Variation Among Populations Of, And Evidence Of Deep Divergence Within, The Rio Grande Chirping Frog, Eleutherodactylus Campi (Anura: Eleutherodactylidae), Kebede Beshera, Avery A. Williams Mr., John A. Hamlin Dr., Peter J. Bergeaux Mr., Christian C. Morgan Dr., Aubrey N. Armstrong Ms.

Faculty Publications

Herein we report the first molecular assessment of intra-species genetic variation and interrelationships within the Rio Grande Chirping frog, Eleutherodactylus campi. We analyzed 548 base pairs of 16S rRNA gene for 71 ingroup individuals belonging to the genus Eleutherodactylus (including 42 E. campi sampled from 15 localities in the United States and Mexico) and four outgroup samples. By unveiling two highly divergent and geographically structured clades within E. campi this study provides a novel phylogenetic placement of E. campi populations north and south of the Rio Grande Valley as sister groups to each other. The observed level of genetic …


Diversifying And Perennializing Plants In Agroecosystems Alters Retention Of New C And N From Crop Residues, Marshall D. Mcdaniel, Jeffrey A. Bird, Jennifer Pett-Ridge, Erika Marin-Spiotta, Tom M. Schmidt, A. Stuart Grandy Dec 2022

Diversifying And Perennializing Plants In Agroecosystems Alters Retention Of New C And N From Crop Residues, Marshall D. Mcdaniel, Jeffrey A. Bird, Jennifer Pett-Ridge, Erika Marin-Spiotta, Tom M. Schmidt, A. Stuart Grandy

Faculty Publications

Managing soils to retain new plant inputs is key to moving toward a sustainable and regenerative agriculture. Management practices, like diversifying and perennializing agroecosystems, may affect the decomposer organisms that regulate how new residue is converted to persistent soil organic matter. Here we tested whether 12 years of diversifying/perennializing plants in agroecosystems through extended rotations or grassland restoration would decrease losses of new plant residue inputs and, thus, increase retention of carbon (C) and nitrogen (N) in soil. We tracked dual-labeled (13C and 15N), isotopically enriched wheat (Triticum aestivum) residue in situ for 2 years as it decomposed in three …


Diet And Disturbance: Seaside Sparrow Resource Use Driven By Oiling And Hurricane Isaac, Allison M. Snider, Andrea Bonisoli-Alquati, Anna A. Pérez-Umphrey, Stefan Woltmann, Philip C. Stouffer, Sabrina S. Taylor Dec 2022

Diet And Disturbance: Seaside Sparrow Resource Use Driven By Oiling And Hurricane Isaac, Allison M. Snider, Andrea Bonisoli-Alquati, Anna A. Pérez-Umphrey, Stefan Woltmann, Philip C. Stouffer, Sabrina S. Taylor

Faculty Publications

The 2010 Deepwater Horizon (DWH) disaster led to extensive oil deposition in Louisiana’s coastal wetlands, followed two years later by Hurricane Isaac. These disturbances led to changes in saltmarsh invertebrate communities, potentially affecting higher-level predators and the saltmarsh food web. Seaside Sparrows (Ammospiza maritima) are ubiquitous, year-round residents of the coastal saltmarsh affected by the DWH spill, where they consume diverse invertebrates and may be considered an indicator species for the ecosystem’s integrity. We used DNA metabarcoding to evaluate prey consumed by Seaside Sparrows to understand how sparrows responded to residual contamination from the DWH oil spill and ecosystem disturbance …


Bioenergy Crops As A Promising Alternative To Fossil Fuels In Louisiana: A Geographic Information System (Gis) Perspective, Yaw A. Twumasi, Zhu H. Ning, John B. Namwamba, Abena B. Asare-Ansah, Edmund C. Merem, Harriet B. Yeboah, Judith Oppong, Matilda Anokye, Diana B. Frimpong, Priscilla M. Loh, Julia Atayi, Rechael N.D. Armah, Caroline Y. Apraku, Opeyemi I. Oladigbolu, Cynthia C. Ogbu, Leah W. Njeri, Joyce Mcclendon-Peralta Dec 2022

Bioenergy Crops As A Promising Alternative To Fossil Fuels In Louisiana: A Geographic Information System (Gis) Perspective, Yaw A. Twumasi, Zhu H. Ning, John B. Namwamba, Abena B. Asare-Ansah, Edmund C. Merem, Harriet B. Yeboah, Judith Oppong, Matilda Anokye, Diana B. Frimpong, Priscilla M. Loh, Julia Atayi, Rechael N.D. Armah, Caroline Y. Apraku, Opeyemi I. Oladigbolu, Cynthia C. Ogbu, Leah W. Njeri, Joyce Mcclendon-Peralta

Faculty Publications

Rising greenhouse gas emissions are causing climate change, and the world’s focus has shifted to the need to reduce our reliance on fossil fuels. There has been a rise in the published literature on the utilization of crops for bioenergy production in Louisiana. However, very few scholarly documents have used Geographic Information Systems (GIS) to map the distribution of potential bioenergy crops in Louisiana. This study seeks to fill the void by evaluating the potential of bioenergy crops in Louisiana for energy production using GIS. Given this objective, the agricultural census data for 1999, 2009, 2019, and 2020 obtained from …


Covid-19 Mitigation Strategies: A Natural Experiment Highlighting The Importance Of Structure In The Prevention And Treatment Of Childhood Obesity, Keith Brazendale, Michael Beets, Robert Weaver Med, Phd, Bridget Armstrong, Ethan T. Hunt Dec 2022

Covid-19 Mitigation Strategies: A Natural Experiment Highlighting The Importance Of Structure In The Prevention And Treatment Of Childhood Obesity, Keith Brazendale, Michael Beets, Robert Weaver Med, Phd, Bridget Armstrong, Ethan T. Hunt

Faculty Publications

Societal restrictions due to the Coronavirus Disease 2019 (COVID-19), such as the closure of schools, childcare centers, and community programs, were implemented to prevent the spread of the disease and to protect the health and well-being of the population. These mitigation efforts drastically interrupted the day-to-day environments of children and adolescents and influenced how they spent the majority of their waking hours. Evidence shows on days when children and adolescents are in “structured” settings, such as school or other extracurricular programs or day camps, their obesogenic behaviors (i.e., sleep, physical activity, diet, and screen/media time) are more favorable than on …


Extensive Morphological And Behavioural Diversity Among Fourteen New And Seven Described Species In Phytophthora Clade 10 And Its Evolutionary Implications, T. Jung, I. Milenković, T. Corcobado, T. Májek, J. Janoušek, T. Kudláček, M. Tomšovský, Z. Nagy, A. Durán, M. Tarigan, E. Sanfuentes Von Stowasser, R. Singh, M. Ferreira, J. F. Webber, B. Scanu, N. M. Chi, P. Q. Thu, M. Junaid, A. Rosmana, B. Baharuddin, T. Kuswinanti, N. Nasri, K. Kageyama, A. Hieno, H. Masuya, S. Uematsu, J. Oliva, M. Redondo, C. Maia, I. Matsiakh, V. Kramarets, R. O’Hanlon, Tomić Dec 2022

Extensive Morphological And Behavioural Diversity Among Fourteen New And Seven Described Species In Phytophthora Clade 10 And Its Evolutionary Implications, T. Jung, I. Milenković, T. Corcobado, T. Májek, J. Janoušek, T. Kudláček, M. Tomšovský, Z. Nagy, A. Durán, M. Tarigan, E. Sanfuentes Von Stowasser, R. Singh, M. Ferreira, J. F. Webber, B. Scanu, N. M. Chi, P. Q. Thu, M. Junaid, A. Rosmana, B. Baharuddin, T. Kuswinanti, N. Nasri, K. Kageyama, A. Hieno, H. Masuya, S. Uematsu, J. Oliva, M. Redondo, C. Maia, I. Matsiakh, V. Kramarets, R. O’Hanlon, Tomić

Faculty Publications

During extensive surveys of global Phytophthora diversity 14 new species detected in natural ecosystems in Chile, Indonesia, USA (Louisiana), Sweden, Ukraine and Vietnam were assigned to Phytophthora major Clade 10 based on a multigene phylogeny of nine nuclear and three mitochondrial gene regions. Clade 10 now comprises three subclades. Subclades 10a and 10b contain species with nonpapillate sporangia, a range of breeding systems and a mainly soil-and waterborne lifestyle. These include the previously described P. afrocarpa, P. gallica and P. intercalaris and eight of the new species: P. ludoviciana, P. procera, P. pseudogallica, P. scandinavica, P. subarctica, P. tenuimura, P. …


Direct And Indirect Effects Of Planting Density, Nitrogenous Fertilizer And Host Plant Resistance On Rice Herbivores And Their Natural Enemies, Finbarr G. Horgan, Eduardo Crisol-Martínez, Alexander M. Stuart, James M. Villegas, Ainara Peñalver-Cruz, Enrique A. Mundaca, Marivic O. Perez, Carmencita C. Bernal, Maria Liberty P. Almazan, Angelee F. Ramal Dec 2022

Direct And Indirect Effects Of Planting Density, Nitrogenous Fertilizer And Host Plant Resistance On Rice Herbivores And Their Natural Enemies, Finbarr G. Horgan, Eduardo Crisol-Martínez, Alexander M. Stuart, James M. Villegas, Ainara Peñalver-Cruz, Enrique A. Mundaca, Marivic O. Perez, Carmencita C. Bernal, Maria Liberty P. Almazan, Angelee F. Ramal

Faculty Publications

In rice ecosystems, seeding densities can be adjusted to compensate for lower nitrogen levels that reduce GHG emissions, or to increase farm profitability. However, density-induced changes to plant anatomy could affect herbivore-rice interactions, and alter arthropod community dynamics. We conducted an experiment that varied transplanting density (low or high), nitrogenous fertilizer (0, 60 or 150 kg added ha−1) and rice variety (resistant or susceptible to phloem-feeding insects) over two rice-growing seasons. Yields per plot increased with added nitrogen, but were not affected by variety or transplanting density. Planthopper and leafhopper densities were lower on resistant rice and in high-density field …


Rejuvenation Improves The Quality Of Trichogramma Brassicae Bezdenko (Hymenoptera: Trichogrammatidae) Reared For Many Generations On Sitotroga Cerealella (Olivier) (Lepidoptera: Gelechiidae), Ehsan Ghaemmaghami, Yaghoub Fathipour, Abdoolnabi Bagheri, Ali Asghar Talebi, Gadi V.P. Reddy Dec 2022

Rejuvenation Improves The Quality Of Trichogramma Brassicae Bezdenko (Hymenoptera: Trichogrammatidae) Reared For Many Generations On Sitotroga Cerealella (Olivier) (Lepidoptera: Gelechiidae), Ehsan Ghaemmaghami, Yaghoub Fathipour, Abdoolnabi Bagheri, Ali Asghar Talebi, Gadi V.P. Reddy

Faculty Publications

Background: Domestication usually has negative effects on insect performance, especially when they are reared continuously for many generations. Rejuvenation can reduce the negative effects of domestication in the parasitoid, Trichogramma brassicae Bezdenko (Hymenoptera: Trichogrammatidae) reared for 30 generations (G) on Sitotroga cerealella (Olivier) (Lepidoptera: Gelechiidae). Life table and parasitism parameters in the primary colony (G31–G45) were compared with the respective colony rejuvenated with field-collected individuals. Results: There were significant differences in life history traits between domesticated and rejuvenated populations. The highest (38.4 eggs/female) and lowest (13.3 eggs/female) fecundity was observed in rejuvenated G31 and domesticated G45, respectively. The highest values …


Evaluation Of Light-Logging Geolocators To Study Mottled Duck Nesting Ecology, Kevin M. Ringelman, Michael G. Brasher, Joseph R. Marty, David A. Butler, Stephen Mcdowell, Richard Temple Dec 2022

Evaluation Of Light-Logging Geolocators To Study Mottled Duck Nesting Ecology, Kevin M. Ringelman, Michael G. Brasher, Joseph R. Marty, David A. Butler, Stephen Mcdowell, Richard Temple

Faculty Publications

Geolocators are small devices that record and store time-stamped light levels that researchers typically use to approximate the latitude and longitude of small birds across the annual cycle. However, when geolocators are affixed to leg bands of larger-bodied birds, nest incubation by females interrupts the daily pattern of light and darkness. Thus, geolocators can provide information on nesting propensity, nest success, and renesting intensity; these demographic parameters are both difficult to measure unobtrusively and are critically important in determining population dynamics of birds, especially ducks. Here, we deployed 240 geolocators on mottled ducks Anas fulvigula in Louisiana and Texas in …


Leaf Habit Affects The Distribution Of Drought Sensitivity But Not Water Transport Efficiency In The Tropics, German Vargas G., Norbert Kunert, William M. Hammond, Z. Carter Berry, Leland K. Werden, Chris M. Smith-Martin, Brett T. Wolfe, Laura Toro, Ariadna Mondragón-Botero, Jesús N. Pinto-Ledezma, Naomi B. Schwartz, María Uriarte, Lawren Sack, Kristina J. Anderson-Teixeira, Jennifer S. Powers Dec 2022

Leaf Habit Affects The Distribution Of Drought Sensitivity But Not Water Transport Efficiency In The Tropics, German Vargas G., Norbert Kunert, William M. Hammond, Z. Carter Berry, Leland K. Werden, Chris M. Smith-Martin, Brett T. Wolfe, Laura Toro, Ariadna Mondragón-Botero, Jesús N. Pinto-Ledezma, Naomi B. Schwartz, María Uriarte, Lawren Sack, Kristina J. Anderson-Teixeira, Jennifer S. Powers

Faculty Publications

Considering the global intensification of aridity in tropical biomes due to climate change, we need to understand what shapes the distribution of drought sensitivity in tropical plants. We conducted a pantropical data synthesis representing 1117 species to test whether xylem-specific hydraulic conductivity (KS), water potential at leaf turgor loss (ΨTLP) and water potential at 50% loss of KS (ΨP50) varied along climate gradients. The ΨTLP and ΨP50 increased with climatic moisture only for evergreen species, but KS did not. Species with high ΨTLP and ΨP50 values were associated with both dry and wet environments. However, drought-deciduous species showed high ΨTLP …


Social Inequalities In Climate Change-Attributed Impacts Of Hurricane Harvey, Kevin T. Smiley, Ilan Noy, Michael F. Wehner, Dave Frame, Christopher C. Sampson, Oliver E.J. Wing Dec 2022

Social Inequalities In Climate Change-Attributed Impacts Of Hurricane Harvey, Kevin T. Smiley, Ilan Noy, Michael F. Wehner, Dave Frame, Christopher C. Sampson, Oliver E.J. Wing

Faculty Publications

Climate change is already increasing the severity of extreme weather events such as with rainfall during hurricanes. But little research to date investigates if, and to what extent, there are social inequalities in climate change-attributed extreme weather event impacts. Here, we use climate change attribution science paired with hydrological flood models to estimate climate change-attributed flood depths and damages during Hurricane Harvey in Harris County, Texas. Using detailed land-parcel and census tract socio-economic data, we then describe the socio-spatial characteristics associated with these climate change-induced impacts. We show that 30 to 50% of the flooded properties would not have flooded …


Genetic Dissection Of Alkalinity Tolerance At The Seedling Stage In Rice (Oryza Sativa) Using A High-Resolution Linkage Map, Lovepreet Singh, Sapphire Coronejo, Rajat Pruthi, Sandeep Chapagain, Uttam Bhattarai, Prasanta K. Subudhi Dec 2022

Genetic Dissection Of Alkalinity Tolerance At The Seedling Stage In Rice (Oryza Sativa) Using A High-Resolution Linkage Map, Lovepreet Singh, Sapphire Coronejo, Rajat Pruthi, Sandeep Chapagain, Uttam Bhattarai, Prasanta K. Subudhi

Faculty Publications

Although both salinity and alkalinity result from accumulation of soluble salts in soil, high pH and ionic imbalance make alkaline stress more harmful to plants. This study aimed to provide molecular insights into the alkalinity tolerance using a recombinant inbred line (RIL) population developed from a cross between Cocodrie and Dular with contrasting response to alkalinity stress. Forty-six additive QTLs for nine morpho-physiological traits were mapped on to a linkage map of 4679 SNPs under alkalinity stress at the seedling stage and seven major-effect QTLs were for alkalinity tolerance scoring, Na+ and K+ concentrations and Na+:K+ ratio. The candidate genes …


Uterine Lumen Fluid Is Metabolically Semi-Autonomous, Constantine A. Simintiras, Jessica N. Drum, Hongyu Liu, M. Sofia Ortega, Thomas E. Spencer Dec 2022

Uterine Lumen Fluid Is Metabolically Semi-Autonomous, Constantine A. Simintiras, Jessica N. Drum, Hongyu Liu, M. Sofia Ortega, Thomas E. Spencer

Faculty Publications

Uterine lumen fluid (ULF) is central to successful pregnancy establishment and maintenance, and impacts offspring wellbeing into adulthood. The current dogma is that ULF composition is primarily governed by endometrial glandular epithelial cell secretions and influenced by progesterone. To investigate the hypothesis that ULF is metabolically semi-autonomous, ULF was obtained from cyclic heifers, and aliquots incubated for various durations prior to analysis by untargeted semi-quantitative metabolomic profiling. Metabolite flux was observed in these ULF isolates, supporting the idea that the biochemical makeup of ULF is semi-autonomously dynamic due to enzyme activities. Subsequent integrative analyses of these, and existing, data predict …


Characterization Of A Stress-Enhanced Promoter From The Grass Halophyte, Spartina Alterniflora L., Sonali Sengupta, Necla Pehlivan, Venkata Mangu, Kanniah Rajasekaran, Niranjan Baisakh Dec 2022

Characterization Of A Stress-Enhanced Promoter From The Grass Halophyte, Spartina Alterniflora L., Sonali Sengupta, Necla Pehlivan, Venkata Mangu, Kanniah Rajasekaran, Niranjan Baisakh

Faculty Publications

Stress-inducible promoters are vital for the desirable expression of genes, especially transcription factors, which could otherwise compromise growth and development when constitutively overexpressed in plants. Here, we report on the characterization of the promoter region of a stress-responsive gene SaAsr1 from monocot halophyte cordgrass (Spartina alterniflora). Several cis-acting elements, such as ABRE (ABA-responsive element), DRE-CRT (dehydration responsive-element/C-Repeat), LTRE (low temperature-responsive element), ERE (ethylene-responsive element), LRE (light-responsive element), etc. contributed at varying degrees to salt-, drought- and ABA-enhanced expression of gusA reporter gene in Arabidopsis thaliana under the full-length promoter, pAsr11875 and its deletion derivatives with an assortment of cis-regulatory motifs. …


Health Physics Workforce In The United States, Michael A. Noska, Caridad Borrás, E. Vincent Holahan, Shaheen A. Dewji, Thomas E. Johnson, Jerry W. Hiatt, Wayne D. Newhauser, John W. Poston, Nolan Hertel Dec 2022

Health Physics Workforce In The United States, Michael A. Noska, Caridad Borrás, E. Vincent Holahan, Shaheen A. Dewji, Thomas E. Johnson, Jerry W. Hiatt, Wayne D. Newhauser, John W. Poston, Nolan Hertel

Faculty Publications

No abstract provided.