25,270 Results Found

Objective: Although Las Vegas is a major tourist hub, it is not among the counties that are under CDC surveillance for Clostridioides difficile infection (CDI), a major nosocomial infection. To determine the distribution of C. difficile ribotypes in...

The Las Vegas urban area expanded rapidly during the last two decades. In order to understand the impacts on the environment, it is imperative that the rate and type of urban expansion is determined. Remote sensing is an efficient and effective way t...

Hazardous substances (e.g., toxic elements, oxides of nitrogen, carbon and sulfur) are discharged to the environment by a number of natural and anthropogenic activities. Anthropogenic air pollution commonly contains trace elements derived from contam...

Las Loras UNESCO Global Geopark (UGGp) is geologically diverse, particularly in relation to water-derived features: springs, karst springs, travertine buildings, waterfalls, caves. In this work, the interactions between geology, geomorphology, struct...

Mine tailings in the Cartagena–La Unión district (SE Spain) remain a metal(loid) source decades after mining ceased. This case study evaluated Las Matildes tailings fifteen to seventeen years after a partial restoration carried out in 20...

Food deserts indicate limited access to and affordability of healthy foods. One potential mediator is the availability of healthy food in non-traditional outlets such as dollar-discount stores, stores selling produce at the fixed $1 price. The purpos...

In September 2023, several hatcheries in Latin America experienced significant mortality rates, up to 90%, in zoea stage 2 of Penaeus vannamei. Observations of fresh mounts revealed structures resembling lipid droplets, similar to those seen in a con...

In the present work, LaNi_0.5Ti_0.5O₃ and La₂NiTiO₆ nanoparticles were synthesized by the modified Pechini method. LaNi_0.5Ti_0.5O₃ was calcined at 1073 K for 17 h or 100 h, while La₂NiTiO₆ was calcined at 1273 K for 135 h. The double perovskite calcined...

Land application of sewage sludge on agricultural soils can be sustainable only if pollutant contents and organic matter quality meet the requirements imposed by minimization of environmental risks. This study investigated the degradation of linear a...

Arctomecon californica, the Las Vegas bear poppy, is a rare plant found only in the eastern Mojave Desert of North America. Because of recent declines in the populations of this endemic plant, conservationists are currently seeking protection for A. ...

Lithium aluminosilicate (LAS) ultra-low-expansion glass ceramics are core materials for precision optical systems, whose quality and dimensional stability are critically constrained by the uniformity of the coefficient of thermal expansion (CTE). Thi...

The Special Sensor Microwave Imager Sounder (SSMIS) onboard the Defense Meteorological Satellite Program (DMSP) F16, launched on 18 October 2003, was the first conical-scanning radiometer to combine the Special Sensor Microwave/Imagers (SSM/I), Speci...

The Las Cruces intrusive suite is located at the southern extent of the Baja California Peninsula in northwestern Mexico. The suite constitutes the northern part of the Los Cabos Batholitic Complex. It is correlated with extensive Cretaceous magmatic...

This article introduces the key issues and scope of the 16th-century debate over the rights of the native American peoples encountered by Columbus and the Castilian conquistadores. The historic attempt by theologians and missionaries to limit imperia...

This study analyses the Roman hydraulic system linked to Las Médulas gold mining complex in Northwest Iberia. The research includes a detailed mapping and assessment of the hydraulic network, which extends over 1110 km, using advanced geomatic...

A surface urban heat island (SUHI) effect is one of the most significant consequences of urbanization. Great progress has been made in evaluating the SUHI with cross-sectional studies performed in a number of cities across the globe. Few studies; how...

We introduce the notions of neutrosophic extended triplet LA-semihypergroup, neutrosophic extended triplet LA-hypergroup, which can reflect some symmetry of hyperoperation and discuss the relationships among them and regular LA-semihypergroups, LA-hy...

The preparation method of SBS-modified asphalt has a direct effect on its overall performance. Currently, the optimal process is usually determined by conventional performance properties, such as softening point, ductility, and penetration, which may...

The Sierra de las Navajas is a Late Pliocene volcanic complex with a rhyolitic composition and peralkaline affinity. It is located on the northeastern edge of the Trans-Mexican Volcanic Belt in the state of Hidalgo. Within this rocky massif lies Cerr...

We characterized residential biomass burning contributions to fine particle concentrations via multiple methods at Fyfe Elementary School in Las Vegas, Nevada, during January 2008: with levoglucosan on quartz fiber filters; with water soluble potassi...

Many factors impact a city’s water consumption, including population distribution, average household income, water prices, water conservation programs, and climate. Of these, however, meteorological effects are considered to be the primary determinan...

Symmetries in the context of hypergroups and their generalizations are closely related to the algebraic structures and transformations that preserve certain properties of hypergroup operations. Symmetric LA-hypergroups are indeed commutative hypergro...

A28-electron reduced C_2h-Mo-blue 34Ǻ outer ring diameter circular ring, [Mo₁₄₂O₄₂₉H₁₀(H₂O)₄₉(CH₃CO₂)₅(C₂H₅CO₂)]^30- (≡{Mo₁₄₂(CH₃CO₂)₅(C₂H₅CO₂)}) comprising eight carboxylate-coordinated (with disorder) {Mo₂} linkers and six defect pockets in two inner...

Socio-environmental conflicts in mining regions are often examined through political, economic, or social lenses, while the role of land-system transformation remains less integrated into quantitative analysis. This study examines the co-evolution of...

The iron-oxide-copper-gold (IOCG) skarns of the Tatatila-Las Minas mining district in central Mexico represent a structurally-controlled, exhumed fossil geothermal system located in the eastern sector of the Trans-Mexican Volcanic Belt (TMVB). The di...

Diode-pumped solid-state lasers using novel Yb:LaF₃ and Tm,Ho:LaF₃ crystals as laser gain materials are demonstrated herein. The Yb:LaF₃ and Tm,Ho:LaF₃ crystals were grown using the Bridgman method. By matching their absorption bands, continuous-wave...

The atmospheric chloride mass balance (CMB) method was used to estimate net aquifer recharge in Las Cañadas Caldera, an endorheic summit aquifer area about 2000 m a.s.l. with negligible surface runoff, which hosts the largest freshwater reserve in...

The effects of holding time and Si on the content, shape size and structure of Ti₂Al₂₀La phase in Al-Ti-La intermediate alloy were investigated by an X-ray diffractometer, scanning electron microscope and transmission electron microscope. The results...

This article describes the development and public performances of La Liga de la Decencia, a new play presented as part of the 2023 New Works Festival at the University of Texas at Austin. Inspired by the cabaret scene and teatro de revista of the 194...

The effects of the La₂O₃/Al₂O₃ mass ratio (L/A-ratio) in electroslag on La yield and the cleanliness of La-containing H13 steel, as well as slag properties were investigated. The slag–steel interaction experiments between slags bearing varying...

Since the first description of nuclear autoantigens in the late 1960s and early 1970s, researchers, including ourselves, have found it difficult to establish monoclonal antibodies (mabs) against nuclear antigens, including the La/SS-B (Sjögrens&...

This paper analyzes the effectiveness of Directive (EU) 2019/883 from the social interest perspective. To achieve this aim, it assesses the performance of the sewage treatment plan (Annex IV of MARPOL) in Las Palmas Port and the accomplishment of the...

In this study, transparent oxyfluoride glass-ceramics (GCs) with NaLaF₄ nanocrystals (NCs) were prepared by the sol–gel method for the first time. Three different molar ratios of La(CH₃COO)₃/Na(CH₃COO) were used to obtain the GCs, which were sintered...

In lily reproduction, the mechanism of formation of bulbs has been a hot topic. However, studies on stem bulblet formation are limited. Stem bulblets, formed in the leaf axils of under- and above-ground stems, provide lilies with a strong capacity fo...

We report a one-pot solvothermal synthesis of sub-10 nm, dominant ultraviolet (UV) emissive upconverting nanocrystals (UCNCs), based on sodium-codoped LaF₃ and BaLaF₅ (0.5%Tm; 20%Yb) and their corresponding core@shell derivatives. Elemental analysis...

College students are an understudied, vulnerable population, whose inactivity rates exceed those reported by U.S. adults. Walkability in sprawling cities, such as Las Vegas, is challenged due to automobile-oriented development. The purpose of this st...

In this paper, a new precursor La(thd)₃-DMEA (thd = 2,2,6,6-tetramethyl-3,5-heptanedione, DMEA = N,N′-dimethylethylenediamine) was synthesized and characterized with ¹H-NMR and X-ray single crystal diffraction. The thermal properties of La(thd)...

Rare earth oxides such as La₂O₃ and Gd₂O₃ are abundant in waste optical glass. The separation of rare earth oxides is beneficial to the recycling of rare earth resources. In this study, the rare earth oxide Gd₂O₃ particles were separated from La₂O₃ p...

The hydrogen storage properties of LaNi₅ framework materials prepared by filling porous substrates with LaNi₅ powders were studied. Aluminum silicate fiber blanket, 110 pores per inch (PPI) polyester foam, and 70 PPI and 110 PPI nickel foams were use...

In this paper, we rediscover in detail a series of unknown attempts that some Spanish mathematicians carried out in the 1930s to address a challenge posed by Mr. la Cierva in 1934, which consisted of mathematically justifying the stability of la Cier...

A hydrogen storage alloy was formed by electrodepositing La using a molten salt. La was electrodeposited using Ni as a substrate in NaCl-KCl-5.0 mol% LaF₃ molten salt at electrodeposition temperatures of 750 °C and 900 °C. The electrodepositi...

The present study focuses on the determination of the optimal crystal thickness of LaCl₃:Ce and LaBr₃:Ce crystal scintillators for Nuclear Medicine Imaging applications. A theoretical model was applied for the estimation of the optical efficiency of...

Decades ago, we and many other groups showed a nucleo-cytoplasmic translocation of La protein in cultured cells. This shuttling of La protein was seen after UV irradiation, virus infections, hydrogen peroxide exposure and the Fenton reaction based on...

At the beginning of the economic crisis in 2008, the number of foreclosures and evictions increased dramatically in Spain. The severe economic situation and the lack of mitigation measures by public institutions seemed to be the main causes. However,...

The degradation process of thermal barrier coatings (TBCs) such as monolayered La₂Zr₂O₇, composite 50% La₂Zr₂O₇ + 50% 8YSZ, and double-ceramic layer (DCL) La₂Zr₂O₇/50% La₂Zr₂O₇ + 50% 8YSZ/8YSZ was investigated. Coatings were deposited using the atmos...

The generalized roughness in LA-semigroups is introduced, and several properties of lower and upper approximations are discussed. We provide examples to show that the lower approximation of a subset of an LA-semigroup may not be an LA-subsemigroup/id...

The intensification of the hydrological cycle due to climate change entails more frequent and intense rainfall. As a result, urban water systems will be disproportionately affected by the climate change, especially in such urban areas as Las Vegas, w...

Background: the aberrant overexpression of predominantly nuclear localizing RNA-binding protein (RBP) La contributes to proliferation, mobility, and chemoresistance of cancer cells and tumor growth in mice. Methods: studies included cancer tissue mic...

Nostalgia and retro are phenomena of modernism and modernization that are currently booming. This goes for political decision-making processes as much as for popular culture where retro aesthetics is the dominant mode of design: Both appear driven by...

The ground state of correlated electrons in complex oxide films can be controlled by applying epitaxial strain, offering the potential to produce unexpected phenomena applicable to modern spintronic devices. In this study, we demonstrate that substra...