1,009 results match your criteria: "The University of Southern Mississippi[Affiliation]"

Purpose:  The purpose of this study is to examine whether the gap detection thresholds (GDT) obtained are similar between an adaptive and nonadaptive procedure in children and adults.

Study Design:  Standard group comparison.

Study Sample:  Eighteen typically developing children and 20 young adults with hearing thresholds of 25 dB HL or lower participated in this study.

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Polymer Sorbent Design for the Direct Air Capture of CO.

ACS Appl Polym Mater

December 2024

School of Polymer Science and Engineering, The University of Southern Mississippi, Hattiesburg, Mississippi 39406, United States.

Anthropogenic activities have resulted in enormous increases in atmospheric CO concentrations particularly since the onset of the Industrial Revolution, which have potential links with increased global temperatures, rising sea levels, increased prevalence, and severity of natural disasters, among other consequences. To enable a carbon-neutral and sustainable society, various technologies have been developed for CO capture from industrial process streams as well as directly from air. Here, direct air capture (DAC) represents an essential need for reducing CO concentration in the atmosphere to mitigate the negative consequences of greenhouse effects, involving systems that can reversibly adsorb and release CO, in which polymers have played an integral role.

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Ultrathin Bioelectrode Array with Improved Electrochemical Performance for Electrophysiological Sensing and Modulation.

ACS Nano

December 2024

Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China.

To achieve high accuracy and effectiveness in sensing and modulating neural activity, efficient charge-transfer biointerfaces and a high spatiotemporal resolution are required. Ultrathin bioelectrode arrays exhibiting mechanical compliance with biological tissues offer such biointerfaces. However, their thinness often leads to a lack of mechano-electrical stability or sufficiently high electrochemical capacitance, thus deteriorating their overall performance.

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[This corrects the article DOI: 10.3389/fimmu.2023.

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Hyperspectral Raman imaging with multivariate curve resolution-alternating least square (MCR-ALS) analysis for xylazine-containing drug mixtures.

Forensic Sci Int

November 2024

School of Criminal Justice, Forensic Science, and Security, The University of Southern Mississippi, Hattiesburg, MS 39406, United States. Electronic address:

Xylazine, increasingly implicated in illicit opioid overdose deaths, poses a significant public health threat due to its synergistic effects with fentanyl and resistance to naloxone reversal. Despite its rising prevalence, xylazine is not classified as a controlled substance, leading to its exclusion from routine forensic screening. This study introduces a novel analytical method combining Raman hyperspectral imaging with Multivariate Curve Resolution-Alternating Least Squares (MCR-ALS) to detect xylazine in drug mixtures containing common excipients such as acetaminophen, dipyrone, and mannitol.

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Spinal deformity in a whale shark, Rhincodon typus (Smith 1828), encountered in the northern Gulf of Mexico, with notes on its movement patterns.

J Fish Biol

December 2024

Office of International Affairs, Trade and Commerce, National Marine Fisheries Service, Pascagoula, Mississippi, USA.

This note details the first formal report of a spinal deformation in whale sharks, Rhincodon typus. An individual whale shark with suspected kypholordoscoliosis was observed at Ewing Bank in the Gulf of Mexico during aggregation events in 2010 and 2013. Despite the significant deformity, the shark was observed feeding on fish eggs at the surface during both encounters.

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Effect of Thermal Stress on Morphology in High-Performance Organic Photovoltaic Blends.

JACS Au

November 2024

School of Polymer Science and Engineering, Center for Optoelectronic Materials and Devices, The University of Southern Mississippi, Hattiesburg, Mississippi 39406, United States.

Thermal stress is a critical factor causing long-term instability in bulk heterojunction (BHJ) layers of organic photovoltaic (OPV) devices. This study provides direct insights into the thermal properties of Y6, PM6, and their binary blends by employing fast differential scanning calorimetry (flash DSC) to analyze their chain dynamics. The glass transition temperatures ( ) of Y6 and PM6 were measured, with Y6 exhibiting a of 175.

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Article Synopsis
  • - HSV encephalitis is a leading cause of sporadic viral encephalitis, which can be serious and even fatal if not treated quickly; this case study highlights its impact.
  • - A 65-year-old man presented with acute respiratory issues and altered mental status after experiencing months of cognitive decline, leading to a diagnosis involving HSV, neurosyphilis, and possible autoimmune encephalitis.
  • - The case emphasizes the complexity of diagnosing and treating conditions that might involve multiple factors, highlighting the need for careful testing and prompt treatment with antivirals and antibiotics.
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Background: Previous research has shown that increasing cycling cadence can result in improved post-cycling gait velocity. However, the specific threshold of cycling cadence required to bring about clinically meaningful changes in gait velocity remains unknown. This study aimed to determine the minimum increment in cycling cadence that would lead to a significant improvement in post-cycling gait velocity.

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Atmospheric CO concentrations keep increasing at intensifying rates due to rising energy and material demands. The chemical production industry is a large energy consumer, responsible for up to 935 Mt of CO emissions per year, and decarbonization is its major goal moving forward. One of the primary sources of energy consumption and CO emissions in the chemical sector is associated with the production and use of heat for material synthesis, which conventionally was generated through the combustion of fossil fuels.

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Uncovering Backbone Conformation for Rigid DPP-Based Donor-Acceptor Conjugated Polymer Using Deuterium Labeling and Neutron Scattering.

Macromolecules

November 2024

School of Polymer Science and Engineering, Center for Optoelectronic Materials and Devices, The University of Southern Mississippi, Hattiesburg, Mississippi 39406, United States.

The conjugated polymer's backbone conformation dictates the delocalization of electrons, ultimately affecting its optoelectronic properties. Most conjugated polymers can be viewed as semirigid rods with their backbone embedded among long alkyl side chains. Thus, it is challenging to experimentally quantify the conformation of a conjugated backbone.

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This case report presents a 53-year-old female patient with a history of acute lymphoblastic leukemia (ALL) who developed chronic graft-versus-host disease (cGVHD) following an allogeneic bone marrow transplant, leading to significant respiratory distress and notable skin findings, including hyperpigmentation and chronic non-healing ulcers. The patient's clinical course illustrates the diverse manifestations of cGVHD, emphasizing the importance of recognizing that not all febrile episodes in post-transplant patients are attributable solely to infection. A multidisciplinary approach was essential for accurate diagnosis and management, underscoring the need for comprehensive evaluation of symptoms in immunocompromised patients.

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The impact of immersive virtual reality meditation for depression and anxiety among inpatients with major depressive and generalized anxiety disorders.

Front Psychol

October 2024

Department of Environmental and Occupational Health, School of Public Health, Texas A&M University, College Station, TX, United States.

Background: Mindfulness-Based Cognitive Therapy (MBCT) is a non-pharmacological approach to alleviating depression and anxiety. While technology based MBCT is a standardized cost-effective approach, there have been concerns about its feasibility and effectiveness in clinical settings.

Aims: The purpose of this study was to investigate the longitudinal relationship between improved emotional regulation resulting from participation in Immersive Virtual Reality Meditation (IVRM) and Major Depressive Disorder (MDD) and Generalized Anxiety Disorder (GAD) as monitored by electrocardiogram.

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Terror Management Theory posits that reminders of mortality increase support for cultural values and negative views toward transgressors. However, little research has investigated how mortality salience can influence individuals' perceptions of victims who have suffered differing moral misfortune types. This study explored how mortality salience and moral misfortune types affect the perceptions of victims.

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Task-switching is commonly used to investigate working memory and attentional control processes. The current study compares predictive versus non-predictive task-sequencing effects on task-switching performance. Participants completed four blocks of the Consonant-Vowel/Odd-Even (CVOE) task: Two single task pure blocks, a predictable switch block where task switching occurred every two trials, and a random switch block where switching was unpredictable.

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: This study tested whether self-reported training volume is predictive of female athlete triad risk collected using an established twelve-question triad screening tool in National Collegiate Athletic Association (NCAA) Division I (DI) collegiate female runners. : A total of 319 institutions were initially contacted, seven of which agreed to distribute surveys to their female cross-country and track and field athletes. A total of 41 of 149 respondents completed the survey and met all inclusion criteria.

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Despite the overall desirability of men's upper body strength, women's preference for such features remains bounded to contexts in which the benefits exceed the potential costs. The relative salience of these costs could be augmented within ostensibly threatening environments, which could include one of ambient darkness. This study sought to determine whether women's interest in strong men would become downregulated in the presence of these cues.

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Unveiling Strong Thin Film Confinement Effects on Semirigid Conjugated Polymers.

Macromolecules

October 2024

School of Polymer Science and Engineering, The University of Southern Mississippi, 118 College Drive, Hattiesburg, Mississippi 39406, United States of America.

Article Synopsis
  • * Findings indicate that as film thickness decreases, there is increased molecular mobility and a dip in glass transition temperature, which is tied to the rigidity of the polymer chains.
  • * Despite thinner films showing improved crystallinity and reduced elastic modulus, charge mobility remains consistently high across different thicknesses, suggesting that nanoconfined polymers could be ideal for use in flexible organic electronics.
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Article Synopsis
  • This study aimed to evaluate how different microphone setups in BiCROS and monaural hearing aids affect hearing performance and user satisfaction in noisy environments.
  • The research involved 18 older adults with hearing loss, measuring speech recognition and sound quality after a 4-week adjustment period with various microphone settings.
  • Results showed that both BiCROS and directional monaural settings significantly improved hearing in noise compared to omnidirectional settings, but no major differences were found between the two types of directional settings used.
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Article Synopsis
  • * They release special substances in their saliva that help them stay attached and avoid detection while they feed.
  • * Scientists are studying tiny molecules called miRNAs from ticks that affect how diseases spread and how our bodies respond, with hopes of finding new ways to control ticks and prevent illnesses they might cause.
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Climate change is expected to intensify tropical cyclones (TCs), requiring a deeper understanding of their ecosystem impacts. This study investigated TC Biparjoy impact on parameters from June 6 to 19, 2023, using satellite and vertical profiles. Initially, Chlorophyll-a levels remained steady but surged above 4 mg/m after the high-intensity phase, indicating increased phytoplankton biomass.

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End-To-End FRET Enabling Direct Measurement of Oligomer Chain Conformations and Molecular Weight in Reaction Solutions.

Macromol Rapid Commun

September 2024

School of Polymer Science and Engineering, The University of Southern Mississippi, 118 College Drive, Hattiesburg, MS, 39406, USA.

Article Synopsis
  • - FRET (Förster resonance energy transfer) is a method used to measure distances between two molecules (donor and acceptor) at the nanometer level, particularly useful in polymer science for determining polymer end-to-end distances.
  • - This study introduces an anthracene-functionalized chain-transfer agent for RAFT polymerization, which enables direct FRET labeling of polymer chain ends without the need for complicated post-synthesis modifications.
  • - The research demonstrates the use of FRET to measure the average end-to-end distance and degree of polymerization of oligomer chains in real-time during the polymerization of various monomers, validating the results with established methods like NMR spectroscopy.
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Introduction: As of 2019, the United States houses 5.3 million Chinese Americans (CA), with 689,000 being older adults. The purpose of this study was to examine the relationships between social determinants of health (SDOH) and acculturation on quality of life in CA older adults, an underresearched area.

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The self-assembly of Janus-type amphiphilic hybrid block copolymers composed of hydrophilic/hydrophobic layers has shown promise for drug encapsulation and delivery. Saccharides have previously been incorporated to improve the biocompatibility of self-assembled structures; however, glycopolymer block copolymers have been less explored, and their structure-property relationships are not well understood. In this study, novel glycopolymer-branched poly(lactic acid) (PLA) block copolymers were synthesized via thiol-ene coupling and their composition-dependent morphologies were elucidated.

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