1,760 results match your criteria: "NV 89154; Los Alamos Neutron Science Center and Materials Science & Technology Division[Affiliation]"

Soil-transmitted helminths (STH) include species responsible for hookworm disease, ascariasis, and trichuriasis. In the United States, STH infections have been greatly reduced with anthelmintic medications and improved hygiene and sanitation, however, cases still regularly occur, but limited epidemiological data exist. We investigated the occurrence of STH infections using big-data analytics of inpatient medical discharge records (1998-2020).

View Article and Find Full Text PDF

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.

View Article and Find Full Text PDF

Housing insecurity is a critical issue within Southern Nevada. However, little is known about the housing-insecurity-related needs of LGBTQIA+ Southern Nevadans. The aim of this study was to identify strategies to address housing insecurity among this vulnerable community.

View Article and Find Full Text PDF

The NASA Mars 2020 Perseverance Rover Mission has collected samples of rock, regolith, and atmosphere within the Noachian-aged Jezero Crater, once the site of a delta-lake system with a high potential for habitability and biosignature preservation. Between sols 109 and 1,088 of the mission, 27 sample tubes have been sealed, including witness tubes. Each sealed sample tube has been collected along with detailed documentation provided by the Perseverance instrument payload, preserving geological and environmental context.

View Article and Find Full Text PDF

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.

View Article and Find Full Text PDF

Aims: This study aimed to determine the effect of a multi-component mHealth intervention on patient activation and examine its predictors among older adults at risk of cardiovascular disease (CVD).

Methods And Results: This pilot randomized controlled trial compared two groups: Get FIT (control), who received healthy lifestyle counselling from a licensed health coach, a mHealth app (MyFitnessPal) with push alerts, and an activity tracker, and Get FIT + (intervention), who received the same interventions and had personalized text messages with 3- and 6-month follow-up periods. Patient activation was measured using the 13-item Patient Activation Measure; higher scores indicated better activation.

View Article and Find Full Text PDF

Complexity demands more flexibility and the prefrontal cortex has an answer.

Neuron

December 2024

University of Nevada, Las Vegas, Interdisciplinary Program in Neuroscience, Las Vegas, NV 89154-1003, USA; University of Nevada, Las Vegas, Department of Psychology, Las Vegas, NV 89154-1003, USA. Electronic address:

Cognitive flexibility allows us to adapt our behavior to keep up with a changing environment. In this issue of Neuron, Mugan and colleagues manipulate the complexity of an environment to demonstrate how the medial prefrontal cortex controls a cognitive flexibility circuit featuring the dorsolateral striatum and hippocampus.

View Article and Find Full Text PDF

The global prevalence of obesity continues to rise. However, whether obesity affects the degree of intra-abdominal solid organ damage following blunt trauma remains unclear. This study aimed to investigate the correlation between obesity and intra-abdominal solid organ damage.

View Article and Find Full Text PDF

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.

View Article and Find Full Text PDF

The influence of family meals on nutrition and health for families has been understudied, especially in low- and middle-income countries. We aimed to analyze associations between regular family meals and body mass index (BMI), food consumption, eating, and sedentary behaviors among Brazilian schoolchildren and their caregivers. A cross-sectional study was conducted with 1887 Brazilian schoolchildren aged 6-11 years and their caregivers.

View Article and Find Full Text PDF
Article Synopsis
  • The microbiome plays a crucial role in host physiology, with well-known effects from bacteria, but less is understood about fungi's contributions.
  • In a study on Hawaiian picture-wing flies, antifungal treatments negatively impacted female reproduction, while antibacterial treatments affected male fecundity differently.
  • Combining both treatments led to significant reductions in reproduction and altered lipid metabolism, indicating the importance of microbial interactions for maintaining gut health and reproductive success.
View Article and Find Full Text PDF

Clostridioides difficile infection (CDI) is the most common nosocomial infection in the US. CDI has become a growing concern due to C. difficile's resistance to several antibiotics, including cephalosporins.

View Article and Find Full Text PDF

repeat expansion creates the unstable folate-sensitive fragile site FRA9A.

NAR Mol Med

October 2024

Program of Genetics and Genome Biology, Peter Gilgan Centre for Research and Learning, The Hospital for Sick Children, 686 Bay Street, Toronto, M5G 0A4, Canada.

The hyper-unstable Chr9p21 locus, harbouring the interferon gene cluster, oncogenes and , is linked to multiple diseases. (GGGGCC)n expansions (Exp) are associated with incompletely penetrant amyotrophic lateral sclerosis, frontotemporal dementia and autoimmune disorders. Exp patients display hyperactive cGAS-STING-linked interferon immune and DNA damage responses, but the source of immunostimulatory or damaged DNA is unknown.

View Article and Find Full Text PDF

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.

View Article and Find Full Text PDF
Article Synopsis
  • Carbon reserves in trees are influenced by past photosynthesis and can be dated using radiocarbon dating, allowing researchers to study their distribution and turnover.
  • A new process model was created to analyze how different tree species manage their carbon reserves, revealing that both young and old reserves coexist within a single tree and are significantly mixed.
  • Disturbances like drought, fire, and pests negatively affect reserve mixing and longevity, with older reserves showing notable age shifts after disturbances, suggesting that ecological variations across species play a critical role in reserve management.
View Article and Find Full Text PDF

We study a diffusive epidemic model and examine the spatial spreading dynamics of a multi-strain infectious disease. In particular, we address the questions of competitive-exclusion or coexistence of the disease's strains. Our results indicate that if one strain has its local reproduction function spatially homogeneous, which either strictly minimizes or maximizes the basic reproduction numbers, then the phenomenon of competitive-exclusion occurs.

View Article and Find Full Text PDF

Insights into chemoautotrophic traits of a prevalent bacterial phylum CSP1-3, herein .

Natl Sci Rev

November 2024

State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Stress Biology and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China.

Candidate bacterial phylum CSP1-3 has not been cultivated and is poorly understood. Here, we analyzed 112 CSP1-3 metagenome-assembled genomes and showed they are likely facultative anaerobes, with 3 of 5 families encoding autotrophy through the reductive glycine pathway (RGP), Wood-Ljungdahl pathway (WLP) or Calvin-Benson-Bassham (CBB), with hydrogen or sulfide as electron donors. Chemoautotrophic enrichments from hot spring sediments and fluorescence hybridization revealed enrichment of six CSP1-3 genera, and both transcribed genes and DNA-stable isotope probing were consistent with proposed chemoautotrophic metabolisms.

View Article and Find Full Text PDF

The evolution of complex multicellularity in land plants represents a pivotal event in the history of life on Earth, characterized by significant increases in biological complexity. This transition, classified as a Major Evolutionary Transition (MET), is best understood through the framework of Evolutionary Transitions in Individuality (ETIs), which focuses on formerly independent entities forming higher-level units that lose their reproductive autonomy. While much of the ETI literature has concentrated on the early stages of multicellularity, such as the formation and maintenance stages, this paper seeks to address the less explored transformation stage.

View Article and Find Full Text PDF

The Discourse Surrounding Polycystic Ovary Syndrome on TikTok: A Social Media Analysis.

Healthcare (Basel)

November 2024

Department of Gynecologic Surgery & Obstetrics, Kirk Kerkorian School of Medicine at UNLV, University of Nevada, Las Vegas, NV 89106, USA.

Background/objectives: Individuals are turning increasingly towards online resources, such as TikTok, to educate themselves on their medical conditions. Polycystic ovary syndrome (PCOS) is a prominent example, as women report dissatisfaction with the diagnosis process and treatment options. This study aims to provide a content analysis of the quality of PCOS health information on TikTok.

View Article and Find Full Text PDF

A fundamental and theoretical framework for mutation interactions and epistasis.

Genomics

November 2024

Nevada Institute of Personalized Medicine, University of Nevada Las Vegas, 4505 S. Maryland Parkway, Las Vegas, NV 89154, USA; School of Life Sciences, University of Nevada Las Vegas, 4505 S. Maryland Parkway, Las Vegas, NV 89154, USA; Heligenics Inc., 10530 Discovery Drive, Las Vegas, NV 89135, USA. Electronic address:

Many pathological conditions are a result of intragenic epistasis; however, there are ambiguities in current epistasis models. Herein, the new Mutation Interaction Spectrum model defines a discrete outcome, named a Mutation Interaction, for each double point mutation in a gene and its component single mutations. The model is a universal genetic model of all types of mutation interactions and their functional outcomes and is derived from digital logic, commonly used in electrical engineering.

View Article and Find Full Text PDF

Background: Early seed germination in crops can confer a competitive advantage against weeds and reduce the time to maturation and harvest. WRKY transcription factors regulate many aspects of plant development including seed dormancy and germination. Both positive and negative regulators of seed germination have been reported in many plants such as rice and Arabidopsis.

View Article and Find Full Text PDF

As human complex diseases are influenced by the interaction between genetics and the environment, identifying gene-environment interactions (G×E) is crucial for understanding disease mechanisms and predicting risk. Developing robust quantitative tools for G×E analysis can enhance the study of complex diseases. However, many existing methods that explore G×E focus on the interplay between an environmental factor and genetic variants, exclusively for common or rare variants.

View Article and Find Full Text PDF

The radioelement Technetium (element 43) pertains to various domains including the nuclear enterprise (i.e., spent nuclear fuel (SNF) reprocessing and nuclear waste remediation) and nuclear medicine (i.

View Article and Find Full Text PDF
Article Synopsis
  • * This research marks the first discovery of kaolinite or halloysite on another planet, alongside findings of dehydrated minerals indicating possible intense alteration processes.
  • * The rocks' formation likely resulted from intense water activity followed by heating and dehydration, possibly linked to impact events that dispersed the materials across the crater.
View Article and Find Full Text PDF