Results 151 to 160 of about 2,564,184 (334)

El holograma y su utilización como un medio de enseñanza de la física en ingeniería

open access: yesRevista Brasileira de Ensino de Física
Con el surgimiento de los hologramas reconstruibles con luz blanca y su desarrollo posterior, se abrieron grandes posibilidades para su utilización como medio de enseñanza por la característica de producir una imagen tridimensional que constituye un ...
Rolando Serra Toledo   +4 more
doaj   +1 more source

Subchronic Exposure to Arsenic and Nickel Triggers Nitrosative Stress and Histological Alterations in the Rat Liver

open access: yesJournal of Applied Toxicology, EarlyView.
ABSTRACT Environmental exposure to heavy metals poses a threat to human health. Several studies documented harmful effects on the liver after arsenic and nickel exposure at concentrations beyond permissible limits. Nevertheless, the impact of a simultaneous exposure to both elements on hepatic biochemistry and histology remains unelucidated. Therefore,
Thainá Iasbik‐Lima   +4 more
wiley   +1 more source

Effect of Zinc Oxide Nanoparticles From Infant Formula Milk Powder on Colon Cells In Vitro

open access: yesJournal of Applied Toxicology, EarlyView.
ABSTRACT Zinc is an essential trace element that participates in numerous metabolic processes; however, excessive exposure may interfere with the absorption of other metals, such as copper. In recent years, nanotechnology has experienced rapid growth, and zinc oxide nanoparticles (ZnO NPs) have garnered significant attention due to their versatile ...
Gloria Salinas‐Lucero   +2 more
wiley   +1 more source

Inscrições Homologadas após análise dos recursos [PDF]

open access: yes, 2017
Inscrições homologadas no processo seletivo para ingresso no curso de doutorado para o semestre 2017/2, após a análise de recursosInscrições homologadas no processo seletivo para ingresso no curso de doutorado para o semestre 2017/2, após a análise de ...
Física, Programa de Pós-graduação
core  

Projected Evolution of Climatic Aridity in Spain: Robust Signals and Model Uncertainties

open access: yesInternational Journal of Climatology, EarlyView.
This study examines the projected evolution of climatic aridity in Spain throughout the 21st century, using the UNEP Aridity Index and CMIP6 simulations under different emission scenarios and global warming levels. Despite model biases, results show a general increase in aridity across the country, particularly in southern regions and the Canary ...
Víctor Trullenque‐Blanco   +5 more
wiley   +1 more source

Dificultades que enfrentan los estudiantes de 10° año en el estudio de física. Alternativas para mejorar el aprendizaje

open access: yesEnsayos Pedagógicos, 2011
Este artículo aborda los problemas que enfrentan los estudiantes de 10° año del Ciclo Diversificado de Educación Secundaria en Costa Rica, en el aprendizaje de la Física, a partir de los resultados de una investigación cualitativa realizada con ...
Carlos Francisco Carranza   +3 more
doaj  

Non‐Stationary Dry‐Spell Hazard Probabilities for Spain

open access: yesInternational Journal of Climatology, EarlyView.
This study assesses long‐term changes in dry‐spell hazard probabilities across Spain (1961–2024) using a novel non‐stationary extreme value framework applied to daily precipitation records from a dense observational network. Results show that dry‐spell duration and associated return levels are dominantly stationary, with non‐stationary models providing
S. M. Vicente‐Serrano   +13 more
wiley   +1 more source

Decadal Changes of UV Aerosol Optical Depth in Hobart, Australia Measured With a Brewer MKIII: Relationship to Bushfire Events and Climate Indices

open access: yesInternational Journal of Climatology, EarlyView.
Monthly average aerosol optical depth at 320 nm obtained with a Brewer MKIII spectrophotometer for Hobart, Australia (42.8806° S, 147.3250° E) over a 21‐year period. There is a linear trend of 15.4% per decade. There are 9 months when the average aerosol optical depth exceeds twice the monthly standard deviation.
Manuel Nuñez   +3 more
wiley   +1 more source

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