2,164 results match your criteria: "University of Nevada - Las Vegas.[Affiliation]"

Designing dicationic organic salts and ionic liquids exhibiting high fluorescence in the solid state.

J Ion Liq

December 2024

Department of Chemistry and Biochemistry, University of Nevada Las Vegas, 4505 S. Maryland Parkway, Box 454003, Las Vegas, NV 89154, United States.

Dicationic ionic liquids (DILs) are emerging as a powerful, next-generation approach to designing applied ILs because of their superior physicochemical properties as well as their diverse complexity and tunability for task specific applications. DILs are scarce in the literature compared to monocationic ILs (MILs), and one of their main issues is their expected tendency to possess higher melting temperatures. A series of 1,4-bis[2-(4-pyridyl)ethenyl] benzene and 1,4-bis[2-(2-pyridyl)ethenyl]benzene quaternary salts (Q-BPEBs) with different counterions (bromide, tosylate, and triflimide) and carbon chain lengths (C, C, and C) have been synthesized for their potential as DILs with strong photoluminescent properties in the solid state.

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Background: The shortage of general surgeons in rural America is well documented. The North Dakota community-based general surgery residency program initiated a unique approach to training for rural practice through a dedicated rural track. The rural track included 9 months of rotations in specialty rotations beneficial for rural practice.

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Mixed Pt-Ni Halide Perovskites for Photovoltaic Application.

Materials (Basel)

December 2024

School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907, USA.

CsPtI is a promising photoabsorber with a direct bandgap of 1.4 eV and a high carrier lifetime; however, the cost of Pt inhibits its commercial viability. Here, we performed a cost analysis and experimentally explored the effect of replacing Pt with earth-abundant Ni in solution-processed Cs(PtNi)(I,Cl) thin films on the properties and stability of the perovskite material.

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Background: Intermittent fasting (IF) can be an effective dietary therapy for weight loss and improving cardiometabolic health. However, there is scant evidence regarding the role of IF on indicators of liver function, particularly in adults with metabolic disorders. Therefore, we performed a systematic review and meta-analysis to investigate the effects of IF on liver function in adults with metabolic disorders.

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Fundamental constraints and questions from the study of martian meteorites and the need for returned samples.

Proc Natl Acad Sci U S A

January 2025

School of Geographical and Earth Sciences, Gregory Building, University of Glasgow, Glasgow G12 8QQ, Scotland.

Physical materials from planetary bodies are crucial for understanding fundamental processes that constrain the evolution of the solar system, as samples can be analyzed at high precision and accuracy in Earth-based laboratories. Mars is the only planet outside of Earth from which we possess samples in the form of meteorites. Martian meteorites (n > 350) have enabled constraints to be placed on various aspects of the red planet's formation and evolution, notably: that Mars accreted and differentiated rapidly; that the planet has a complex volatile element evolution; and that it has always been volcanically active with a rich and diverse magmatic history.

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Hydropersulfide (RSSH)-Mediated Hydrothiolation of Alkenes.

J Org Chem

January 2025

Department of Chemistry and Biochemistry, University of Nevada Las Vegas, 4505 South Maryland Parkway, Las Vegas, Nevada 89154-4003, United States.

A hydropersulfide-mediated hydrothiolation reaction of alkenes has been developed for C-S bond formation with Markovnikov selectivity. This new approach is a transition-metal-, additive-, and solvent-free reaction under mild conditions. The reaction is postulated to proceed by an ionic mechanism with the release of elemental sulfur based on our control experiments and density functional theory calculations.

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Introduction: The (IDEAL) Study is a randomized clinical trial investigating the psychosocial, behavioral, and cognitive impacts of apolipoprotein E () genotype disclosure for late-onset Alzheimer's disease (AD) among Latinos.

Methods: We used address-based sampling to recruit English- and Spanish-speaking Latinos aged 40-64 living in northern Manhattan for a community-based Baseline Survey about their knowledge and opinions about AD. Participants eligible for the clinical trial were invited to complete an Introductory Session, including AD and genetics education and informed consent, before undergoing genotyping for .

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Objective: There has been limited research on the influence of race and ethnicity on treatment decision-making for chronic rhinosinusitis (CRS). This prospective study aims to investigate potential factors linked to treatment modality choice among patients with medically refractory CRS, distinguishing between Chinese American and non-Chinese American patients.

Methods: CRS patients with persistent symptoms despite prior medical treatment were prospectively enrolled.

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Objective: To report our recent experience with prenatal detection of significant cardiovascular malformations (CVMs) in Nevada's state-wide maternal population receiving prenatal care.

Methods: We queried our databases for those with significant CVMs diagnosed pre- or postnatally between May 1, 2021, and April 30, 2024. We defined CVMs as those that required, would have required, or will likely require a therapeutic procedure in the first 12 months.

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Type 2 diabetes mellitus (T2DM) is associated with cellular abnormalities, tissue and organ dysfunctions, and periodontitis. This investigation examined the relationship between the oral microbiome and salivary biomarkers in T2DM patients with or without periodontitis. This cohort (35-80 years) included systemically healthy non-periodontitis (NP; n = 31), T2DM without periodontitis (DWoP; n = 32) and T2DM with periodontitis (DWP; n = 29).

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Associations between neonicotinoids and inflammation in US adults using hematological indices: NHANES 2015-2016.

Environ Epidemiol

February 2025

Department of Epidemiology and Biostatistics, University of Nevada Las Vegas, School of Public Health, Las Vegas, Nevada.

Background: Toxicological studies suggest neonicotinoids increase oxidative stress and inflammation, but few epidemiological studies have explored these effects.

Methods: National Health and Nutrition Examination Survey (NHANES) 2015-2016 data were used to estimate associations between neonicotinoid exposure and inflammatory markers, including the C-reactive protein-to-lymphocyte count ratio (CLR), monocyte-to-high-density lipoprotein ratio (MHR), monocyte-to-lymphocyte ratio (MLR), neutrophil-to-lymphocyte ratio (NLR), derived NLR (dNLR), lymphocyte-to-monocyte ratio, platelet-to-lymphocyte ratio (PLR), and systemic immune-inflammation index (SII) using linear and multinomial logistic regression models. Sex was evaluated as a potential modifier.

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To understand the potential benefits of emerging Alzheimer's disease (AD) therapies within and beyond clinical trial settings, there is a need to advance current outcome measurements into meaningful information relevant to all stakeholders. The relationship between the impact on disease biology and clinically measurable outcomes in cognition, function, and behavior must be considered when defining the meaningful benefit of early AD therapies. In this review, we discuss: (1) the lack of consideration for biomarkers in the current concept of meaningfulness in AD; (2) the lack of gold standards for determining minimal biologically and clinically important differences (MBCIDs) in AD trials; (3) how the treatment benefits of disease-modifying treatments are cumulative and increase over time; and (4) the different concepts of meaningfulness among key stakeholders.

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Ophthalmoplegia in Seropositive Myasthenia Gravis and Concomitant Seropositive Anti-GQ1b Disease.

J Neuroophthalmol

December 2024

Departments of Neurology and Neuro-Ophthalmology (AV), Valley Hospital Medical Center, Las Vegas Neurology Center, Las Vegas, Nevada; University of Nevada Las Vegas School of Medicine (CD), Las Vegas, Nevada; Departments of Neurology (CN, PJ), Valley Hospital Medical Center, Las Vegas Neurology Center, Las Vegas, Nevada; McGovern Medical School (MYZ), University of Texas at Houston Health Science Center, Houston, Texas; Department of Ophthalmology (RI), University of Texas Medical Branch, Houston, Texas; Department of Ophthalmology (SAA), The University of Jordan, Amman, Jordan; Department of Ophthalmology (SAA, AGL), Houston Methodist Hospital, Houston, Texas; Ophthalmology (AGL), Blanton Eye Institute, Houston Methodist Hospital, Houston, Texas; Ophthalmology, Neurology, and Neurosurgery (AGL), Weill Cornell Medicine, New York, New York; Ophthalmology (AGL), UTMB Galveston, Texas A and M College of Medicine, and the UT MD Anderson Cancer Center, Houston, Texas; and Ophthalmology (AGL), Baylor College of Medicine, The University of Buffalo, Buffalo, New York, and the University of Iowa Hospitals and Clinics (AGL), Houston, Texas.

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Even though gene duplication is a key source of new genes and evolutionary innovation, it is unclear how duplicates survive the period immediately following gene duplication, in which both copies are functionally redundant. In the absence of epigenetic silencing, the abundance of the gene product would double after gene duplication, which would often have deleterious effects. However, recent duplicates exhibit low expression levels, which could be at least partially explained by high levels of promoter methylation.

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Modeling Clustered DNA Damage by Ionizing Radiation Using Multinomial Damage Probabilities and Energy Imparted Spectra.

Int J Mol Sci

November 2024

Department of Health Physics and Diagnostic Sciences, University of Nevada Las Vegas, 4505 S. Maryland Parkway, Box 453037, Las Vegas, NV 89154, USA.

Simple and complex clustered DNA damage represent the critical initial damage caused by radiation. In this paper, a multinomial probability model of clustered damage is developed with probabilities dependent on the energy imparted to DNA and surrounding water molecules. The model consists of four probabilities: (A) direct damage of sugar-phosphate moieties leading to SSB, (B) OH radical formation with subsequent SSB and BD formation, (C) direct damage to DNA bases, and (D) energy imparted to histone proteins and other molecules in a volume not leading to SSB or BD.

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Among the many ice-binding proteins (IBPs) found in microorganisms (bacteria, archaea, fungi and algae), the canonical DUF3494 beta-barrel type is the most common. Until now, little variation has been found in this structure: an initial coil leads into an alpha helix that directs the following coils into a reverse stack, with the final coil ending up next to the initial coil. Here, I show that there exist many bacterial proteins whose AlphaFold-predicted structures deviate from the DUF3494 structure so that they are not recognized as belonging to an existing DUF or Pfam family.

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Former American football players are at risk for developing traumatic encephalopathy syndrome (TES), the clinical disorder associated with neuropathologically diagnosed chronic traumatic encephalopathy (CTE). The objective of this study was to determine whether hyposmia is present in traumatic encephalopathy syndrome. The study included 119 former professional American football players, 60 former college football players, and 58 same-age asymptomatic unexposed men from the DIAGNOSE CTE Research Project.

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Article Synopsis
  • * A study surveyed 1,068 parents from Catholic, Evangelical, or Mainline Protestant backgrounds, finding that 72.3% of children had received the vaccine, with no significant differences in uptake across the denominations.
  • * Key factors affecting vaccination decisions included perceived benefits of the vaccine, barriers, self-efficacy, and communication from healthcare providers, highlighting the importance of fostering better provider-parent interactions and collaboration with religious groups to improve vaccine acceptance.
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Background: This review aims to analyze sex-related differences in patients with acute myocardial infarction (AMI) complicated by cardiogenic shock (CS).

Methods: 10 studies were retrieved from PubMed and Embase comparing outcomes between men and women admitted with AMI complicated by CS. Pooled log odds ratios (OR) were calculated for binary outcomes using the Mantel-Haenszel method, and Hedges' g with the inverse-variance method was used for continuous outcomes.

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Assessing the basis for regulatory crediting of virus LRVs for secondary biological wastewater treatment: A systematic review.

Water Res

November 2024

Southern Nevada Water Authority, P.O. Box 99954, Las Vegas, NV 89193, United States. Electronic address:

Regulatory frameworks for potable reuse often include stringent log reduction value (LRV) targets to ensure public health protection against exposure to viruses and protozoa. To achieve overall LRV targets and reduce associated capital and operational costs, it is important to maximize LRV credits awarded to each unit process in a potable reuse treatment train. This may include processes that are historically uncredited or undercredited, such as secondary biological wastewater treatment incorporating activated sludge and secondary clarification.

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Addressing pain in people living with cystic fibrosis: Cystic fibrosis foundation evidence-informed guidelines.

J Cyst Fibros

December 2024

Department of Family and Preventive Medicine, Division of Palliative Medicine, Emory University, Atlanta, GA, USA.

Even as many outcomes for people living with cystic fibrosis (PLwCF) improve, individuals still experience extensive symptom burdens. From birth, many PLwCF experience both pain as a symptom of their CF disease and procedural pain, posing detriments to health, functioning, and quality of life. Despite its prevalence and impact, there is no CF-specific guidance for the assessment and management of pain.

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Article Synopsis
  • The text discusses the importance of forecasting future health issues in the USA for effective planning and public awareness regarding disease and injury burdens.
  • It describes the methodology for predicting life expectancy, cause-specific mortality, and disability-adjusted life-years (DALYs) from 2022 to 2050 using the Global Burden of Diseases framework.
  • The forecasting includes various scenarios to assess the potential impacts of health risks and improvements across the country, focusing on demographic trends and health-related risk factors.
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Article Synopsis
  • High microglial diversity complicates the creation of targeted treatments for Alzheimer's disease (AD).
  • A comprehensive analysis of RNA-sequencing data revealed specific microglial subtypes associated with AD and identified potential drug targets, including microglial transition networks.
  • The study highlights ketorolac as a promising anti-inflammatory treatment for AD, showing its association with lower AD incidence in patient databases.
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Article Synopsis
  • The traditional orbital monsoon hypothesis explains rainfall variations in monsoonal regions primarily through local summer insolation over long time scales, notably seen in Asian and South American records.
  • However, some tropical areas show rainfall patterns that don't align with this hypothesis, prompting the exploration of other influencing factors.
  • The study presents a 140,000-year Central American rainfall record from stalagmites, suggesting that the Atlantic Ocean's thermal state and the meridional overturning circulation (AMOC) are key drivers of monsoon changes, rather than just local insolation.
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