Results 141 to 150 of about 2,564,184 (334)

¿Cómo lo medimos? Siete contextos de indagación para detectar y corregir concepciones erróneas sobre magnitudes y unidades

open access: yesRevista Eureka sobre Enseñanza y Divulgación de las Ciencias, 2014
Las actividades convencionales de enseñanza de la física sobre magnitudes y unidades pueden tener dificultades en evidenciar o corregir las concepciones erróneas del alumnado.
Jordi Domènech Casal
doaj  

Selective Optical Properties of Cement for Enhanced Radiative Cooling and Energy‐Efficient Construction Materials

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Cement phases are good materials for radiative cooling thanks to the selective emissivity in IR ATW. Cement powders have high reflectance of solar radiation which reduces the thermal losses. The onset of the absorption curves is defined by bound excitons. Sulfates have higher radiated powers and reflectance than calcium silicates.
Jozef Janovec   +3 more
wiley   +1 more source

Concepciones del alumnado de secundaria sobre las finalidades de la física y su papel en la tecnología

open access: yesRevista Eureka sobre Enseñanza y Divulgación de las Ciencias, 2006
En este artículo se presentan los resultados de una investigación exploratoria, orientada a conocer cuáles son las ideas del alumnado de 2º ciclo de Secundaria (14- 16 años) sobre las finalidades de la Física, y de su influencia en la Tecnología.
Antonio García-Carmona
doaj  

CONSCIENTIZAÇÃO SOCIOAMBIENTAL NAS AULAS DE EDUCAÇÃO FÍSICA

open access: gold, 2021
Lúcio Vaz   +2 more
openalex   +1 more source

Ground‐ and Excited‐State Mixed Valency in a 4,4′‐Bipyridine‐Bridged Bimetallic Di‐Ruthenium Complex

open access: yesEuropean Journal of Inorganic Chemistry, EarlyView.
Photoinduced mixed‐valence interactions across a 4,4′‐bpy bridge were studied. MLCT excited states in the bimetallic complex are longer‐lived than in the monometallic reference, thanks to metal–metal electronic coupling and hole delocalization, but are still shorter than the nanosecond timescale relevant for diffusional reactivity.
Ivana Ramírez‐Wierzbicki   +3 more
wiley   +1 more source

¿El polo norte geográfico terrestre es un polo norte magnético o un polo sur?

open access: yesRevista Eureka sobre Enseñanza y Divulgación de las Ciencias, 2008
Presentamos una actividad alternativa a una práctica de laboratorio habitual en la enseñanza universitaria. Su intención es acercar a los estudiantes a la metodología científica mediante el planteamiento de preguntas relevantes.
Xavier Bohigas
doaj  

Mulheres na física: poder e preconceito nos países em desenvolvimento

open access: yesRevista Brasileira de Ensino de Física
O número de mulheres na física é pouco representativo, seja na pesquisa governamental, na indústria ou no meio acadêmico. Na maioria dos países, apenas cerca de 10% a 12% dos profissionais do campo da física, nos ultimos 100 anos, são mulheres.
D.A. Agrello, R. Garg
doaj   +1 more source

New Approach Methodologies (NAMs) in Alternative Methods: A Comparative Cytotoxicity Analysis of Nanostructured Hydroxyapatite in Adipose Stem Cells Spheroids

open access: yesJournal of Applied Toxicology, EarlyView.
ABSTRACT Toxicological assessment is essential in NP approval for health and medical applications. Although 2D cell culture has been widely used, 3D models, especially spheroids, provide better predictive value for toxicological risk assessments since they replicate complex cellular interactions more accurately.
Bianca Montenegro   +5 more
wiley   +1 more source

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