Results 31 to 40 of about 704 (135)

La tradición del yeso (parte primera)

open access: yesAlquipir, 1999
El yeso se ha utilizado a lo largo de la historia para la construcción y otros usos como los ritos mágicos. La piedra utilizada para la elaboración del yeso es el aljez, que es calcinada en el horno y el siguiente paso es la molienda.
José Manuel Alcázar Espín
doaj  

Interactive Effects of Warming and Competition Do Not Limit the Adaptive Plastic Response to Drought in Populations of a Mediterranean Plant

open access: yesGlobal Change Biology, Volume 31, Issue 7, July 2025.
Plants can modify their phenotype (i.e., the characteristics of an individual) in response to environmental changes, a phenomenon termed phenotypic plasticity. Adaptive plasticity may maintain or increase individual fitness, being crucial to cope with complex environmental changes.
Marina Ramos‐Muñoz   +6 more
wiley   +1 more source

El enlucido exterior de yeso en las rehabilitaciones de las fachadas de París

open access: yesInformes de la Construccion, 1986
La utilización, fabricación y puesto en obra de morteros de yeso, sobre las fachadas antiguas en el viejo París -técnica puramente manual-, están precisadas desde hace mucho tiempo.
M. Raymond Pigache
doaj   +1 more source

Efectos del fuego en la Virgen del Perdón, tabla novohispana del siglo XVI [PDF]

open access: yesGe-conservación, 2009
Se ha estudiado el efecto del fuego sobre la Virgen del Perdón de Simón Pereyns, pintura sobre tabla del siglo XVI que se incendió en 1967 en la Catedral de México.
Elsa Minerva Arroyo Lemus
doaj   +1 more source

Method Dependence in Thermal Conductivity and Aerodynamic Roughness Length Estimates on a Debris‐Covered Glacier

open access: yesJournal of Geophysical Research: Earth Surface, Volume 130, Issue 6, June 2025.
Abstract Rock debris partially covers glaciers worldwide, with varying extents and distributions, and controls sub‐debris melt rates by modifying energy transfer from the atmosphere to the ice. Two key physical properties controlling this energy exchange are thermal conductivity (k) $(k)$ and aerodynamic roughness length z0 $\left({z}_{0}\right ...
Vicente Melo‐Velasco   +6 more
wiley   +1 more source

Desarrollo de un revestimiento de chamota/yeso para microfundición de joyería con esmeraldas preengastadas

open access: yesRevista Facultad de Ingeniería, 2017
Durante el proceso de microfundición de joyería con preengaste de gemas, el molde cerámico compuesto de sílice y yeso se estabiliza a temperaturas cercanas a 650 °C, mientras que la temperatura de vertido de la aleación preciosa ronda los 1000 °C.
Carlina Sofía Londoño-Montes   +2 more
doaj   +1 more source

Systematic and taxonomic revision of the genus Austrocactus (Cactaceae) based on morphology and genome wide SNP‐data

open access: yesTAXON, Volume 74, Issue 2, Page 386-416, April 2025.
Abstract The post‐Miocene climatic history of arid environments in South America has been identified as a key driver of dispersal and diversification, particularly among plant groups such as Cactaceae. Despite their iconic status, many cactus genera remain poorly understood, and comprehensive taxonomic and systematic revisions using morphological and ...
Tim Böhnert   +6 more
wiley   +1 more source

Cartography of disaster areas in andean catchment of central Chile. Determination of risk sectors

open access: yesCuadernos de Investigación Geográfica, 2013
The geomorphic processes of the upper basin of the Maipo river (Central Chile) are studied in the hillslopes located between 870 and 3.000 m.a.s.l., using Landsat images, terrain analysis and interviews to local peoples.
V. Quintanilla Pérez
doaj   +1 more source

The Importance of a Glacier Complex for Downstream Runoff in the Semiarid Chilean Andes During Dry Years

open access: yesHydrological Processes, Volume 39, Issue 2, February 2025.
The cryosphere represents a key hydrological control on local ecosystems in the semiarid Andes of Chile. This study uses the Cold Regions Hydrological Model to quantify glacio‐hydrological processes in a sub‐catchment of the Elqui River catchment for two relatively dry years (2019–2020 and 2020–2021). Results indicate that sublimation accounted for 66%–
Eduardo Yáñez San Francisco   +2 more
wiley   +1 more source

Comportamiento mecánico de yeso reforzado con polímeros sintéticos

open access: yesInformes de la Construccion, 1988
Se presenta un estudio de la resistencia mecánica del yeso, basado en su refuerzo mediante la adición de polímeros sintéticos, en forma de fibras y dispersiones acuosas.
Alfonso García Santos
doaj   +1 more source

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