88 results match your criteria: "University of Louisiana-Lafayette[Affiliation]"

Community structure and ecosystem function may be driven by the size or the energy within a given habitat, but these metrics (space and energy) are difficult to separate, especially in systems where the habitat itself is also food, such as detritus. Only a handful of studies have attempted to isolate potential mechanisms experimentally, which has left a notable knowledge gap in understanding the drivers of community structure and function. Here, we tested whether fine woody debris (FWD) affects leaf litter communities primarily as a source of space or energy.

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Purpose: Summer day camp offers children opportunities to grow knowledge and skills, be physically active, and have fun. Compared to healthy children, at-risk children (i.e.

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Phylogenetic diversity offers critical insights into the ecological dynamics shaping species composition and ecosystem function, thereby informing conservation strategies. Despite its recognized importance in ecosystem management, the assessment of phylogenetic diversity in endangered habitats, such as vernal pools, remains limited. Vernal pools, characterized by cyclical inundation and unique plant communities, present an ideal system for investigating the interplay between ecological factors and phylogenetic structure.

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Organic hydroperoxides (ROOH) are ubiquitous in the atmospheric oxidation of volatile organic compounds (VOCs) as well as in low-temperature oxidation of hydrocarbon fuels. The present work focuses on a prototypical cyclic hydroperoxide, cyclohexyl hydroperoxide (CHHP). The overtone OH stretch (2) spectrum of jet-cooled CHHP is recorded by IR multiphoton excitation with UV laser-induced fluorescence detection of the resulting OH products.

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Article Synopsis
  • Rhesus macaques naturally develop colorectal cancers (CRC) that closely resemble human CRC in terms of histology, progression, and genetic characteristics, making them valuable for studying cancer immunotherapy.
  • Detailed analyses, including advanced imaging and molecular techniques like DNA sequencing and transcriptomics, confirmed similarities in mutation patterns and functional behaviors between macaque and human CRCs, particularly highlighting MLH1 loss and microsatellite instability.
  • The research also indicated a significant presence of DNA hypermethylation, particularly affecting MLH1, contributing to alterations in DNA topology that may impact transcription factor binding, showcasing the complex molecular landscape of CRC in these primates.
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During the Advanced Plant Habitat experiment 2, radish plants were grown in two successive grow-outs on the International Space Station (ISS) for 27 days each. On days 10, 18, and 24, leaf punch (LP) samples were collected and frozen. At harvest, bulb tissue was sampled with oligo-dT functionalized Solid Phase Gene Extraction (SPGE) probes.

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Heat waves are becoming more frequent and intense with climate change, but the demographic and evolutionary consequences of heat waves are rarely investigated in herbaceous plant species. We examine the consequences of a short but extreme heat wave in Oregon populations of the common yellow monkeyflower () by leveraging a common garden experiment planted with range-wide populations and observational studies of 11 local populations. In the common garden, 89% of seedlings died during the heat wave including >96% of seedlings from geographically local populations.

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The history of the decline of the Ivory-billed Woodpecker is long and complex, but the status of the species since 1944, when the last widely accepted sighting in continental North America occurred, is particularly controversial. Reports of Ivory-billed Woodpeckers have continued, but none has reached the threshold of quality for general acceptance by ornithologists or the birdwatching public. In 2021, the U.

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Exercise stimulates the production and secretion of testosterone, cortisol, and brain-derived neurotrophic factor (BDNF) and affects cognitive performance. However, the interaction of these variables is unknown. To investigate these interactions, 21 college-aged men completed two work-matched exercise protocols: continuous (CONT) exercise and an interval protocol (INT).

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Consumers can influence ecological patterns and processes through their trophic roles and contributions to the flow of energy through ecosystems. However, the diet and associated trophic roles of consumers commonly change during ontogeny. Despite the prevalence of ontogenetic variation in trophic roles of most animals, we lack an understanding of whether they change consistently across local populations and broad geographic gradients.

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  • Messenger RNA has been successfully used in vaccines, but the diversity of lung diseases suggests a need for targeted RNA therapeutics specifically for the lungs.
  • Researchers screened 166 polymeric nanoparticle formulations for effective delivery of RNA to the lungs, discovering a promising polymer, P76, which shows enhanced performance and low toxicity.
  • P76 can efficiently deliver mRNA treatments, demonstrating similar effectiveness to much higher doses of traditional neutralizing antibodies in models of SARS-CoV-2, indicating its potential for future lung-targeted RNA therapies.
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Energetic constraints on body-size niches in a resource-limited marine environment.

Biol Lett

August 2022

Department of Biology, University of Louisiana-Lafayette, 410 E St. Mary Boulevard, Billeaud Hall, Lafayette, LA 70503, USA.

Body size of life on the Earth spans many orders of magnitude, and with it scales the energetic requirements of organisms. Thus, changes in environmental energy should impact community body-size distributions in predictable ways by reshaping ecological and niche dynamics. We examine how carbon, oxygen and temperature, three energetic drivers, impact community size-based assembly in deep-sea bivalves.

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Aim: To describe the mentoring process between the ICN Advanced Practice Nurse Network practice subgroup and the University of Pécs to support the emerging advanced practice role in Hungary, and explore the creation of a mentoring algorithm for faculty and other key stakeholders worldwide who wish to develop advanced practice nursing programs.

Background: Advanced practice nurses provide comprehensive clinical care and expand access to care in more than 70 countries. In March of 2017, a representative of the Faculty of Health Sciences of the University of Pécs requested assistance in curricula development for the inaugural advanced practice nursing program in Hungary.

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The systemic nature of SARS-CoV-2 infection is highly recognized, but poorly characterized. A non-invasive and unbiased method is needed to clarify whole body spatiotemporal dynamics of SARS-CoV-2 infection after transmission. We recently developed a probe based on the anti-SARS-CoV-2 spike antibody CR3022 to study SARS-CoV-2 pathogenesis .

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Article Synopsis
  • Researchers developed a novel probe using the anti-SARS-CoV-2 antibody CR3022 to study the dynamics of SARS-CoV-2 infection in rhesus macaques through non-invasive PET imaging.
  • The study tracked the probe's activity in the respiratory tract and identified infection sites, including significant findings in the male genital tract (MGT) and differences in lung pathology between different virus strains.
  • The research highlights the effectiveness of immunoPET in understanding SARS-CoV-2's pathogenicity and uncovering potential new sites for viral replication in the body.
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Biodiversity can enhance the response of ecosystems to disturbance. However, whether diversity can reduce the ecological effect of human-induced novel and extreme disturbances is unclear. In April 2010, the () platform exploded, allowing an uncontrolled release of crude oil into the northern Gulf of Mexico.

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Development of an Probe to Track SARS-CoV-2 Infection in Rhesus Macaques.

Front Immunol

January 2022

Department of Cell and Developmental Biology, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States.

Infection with the novel coronavirus, SARS-CoV-2, results in pneumonia and other respiratory symptoms as well as pathologies at diverse anatomical sites. An outstanding question is whether these diverse pathologies are due to replication of the virus in these anatomical compartments and how and when the virus reaches those sites. To answer these outstanding questions and study the spatiotemporal dynamics of SARS-CoV-2 infection a method for tracking viral spread is needed.

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Energetic resources and habitat distribution are inherently linked. Energetic resource availability is a major driver of the distribution of consumers, but estimating how much specific habitats contribute to the energetic resource needs of a consumer can be problematic. We present a new approach that combines remote sensing information and stable isotope ecology to produce maps of energetic resources (E-scapes).

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The malaria parasite (lineage GRW4) was introduced less than a century ago to the native avifauna of Hawai'i, where it has since caused major declines of endemic bird populations. One of the native bird species that is frequently infected with GRW4 is the Hawai'i 'amakihi (). To achieve a better understanding of the transcriptional activities of this virulent parasite, we performed a controlled challenge experiment of 15 'amakihi that were infected with GRW4.

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Mangrove growth response to experimental warming is greatest near the range limit in northeast Florida.

Ecology

June 2021

Department of Biology and Center for Biodiversity and Ecosystem Stewardship, Villanova University, Villanova, Pennsylvania, 19085, USA.

Shrubs are invading into grasslands around the world, but we don't yet know how these shrubs will fare in a warmer future. In ecotonal coastal wetland ecosystems, woody mangroves are encroaching into herbaceous salt marshes owing to changes in temperature, precipitation, and sediment dynamics. Increasing mangrove biomass in wetlands often increases carbon storage, which is high in these productive ecosystems, but little is known about how mangrove growth will change in response to warming.

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K, P, Cl, and Ca are distributed in tissue-specific patterns in Zea mays seedlings. These elements were mapped and analyzed using a relatively simple semi-quantitative technique, i.e.

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The COVID-19 pandemic has closed non-essential businesses which may alter individuals' leisure behaviors. Consequently, physical activity and sedentary behavior may be negatively impacted as many fitness and recreational centers have been closed. This study aimed to examine the impact of the pandemic on physical activity and sedentary behavior in a sample of university students and employees before and after the university cancelled face-to-face classes and closed campus.

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Investigating the Effects of Lithium Phosphorous Oxynitride Coating on Blended Solid Polymer Electrolytes.

ACS Appl Mater Interfaces

September 2020

National Renewable Energy Laboratory, Materials Science Center, Golden, Colorado 80401, United States.

Solid-state electrolytes are very promising to enhance the safety of lithium-ion batteries. Two classes of solid electrolytes, polymer and ceramic, can be combined to yield a hybrid electrolyte that can synergistically combine the properties of both materials. Chemical stability, thermal stability, and high mechanical modulus of ceramic electrolytes against dendrite penetration can be combined with the flexibility and ease of processing of polymer electrolytes.

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Article Synopsis
  • Clostridium perfringens is a common bacterium found in the environment and the intestines of warm-blooded animals, but its excessive growth can lead to serious diseases in both animals and humans due to toxin production.* -
  • A study successfully isolated 10 strains of C. perfringens from 126 captive cynomolgus monkeys, confirming that all isolates belonged to genotype A and produced alpha toxin, with only a few producing beta 2 toxin.* -
  • The isolates showed high susceptibility to β-lactam antibiotics, exhibited characteristics like double hemolysis and lecithinase activity, and 90% were capable of forming biofilms, which can contribute to antibiotic resistance.*
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