Results 51 to 60 of about 168,817 (204)

Susceptibilidad al daño por heladas en el pino híbrido, Pinus elliottii Engelm var. elliottii × Pinus caribaea Morlet var. hondurensis (sénéclauze) W.H. Barrett & Golfari y su relación con variables de crecimiento y fenología

open access: yesRevista de la Facultad de Agronomía
Las especies híbridas se adaptan mejor a diferentes ambientes que sus progenitores. El pino híbrido (pino híbrido PEE×PCH) entre Pinus elliottii Engelm var. elliottii × Pinus caribaea Morlet var. hondurensis (Sénéclauze) W.H.
Cristian Damian Schoffen   +4 more
doaj   +1 more source

Efecto del procesado termomecánico sobre las propiedades mecánicas de la aleación MA956. II Caracterización mecánica

open access: yesRevista de Metalurgia, 1998
Se estudia el efecto de las características microestructurales de la aleación MA956 obtenidas en algunas de las etapas intermedias de su procesado, sobre sus propiedades mecánicas a temperatura ambiente y a bajas temperaturas.
J. Chao, G. González-Doncel
doaj   +1 more source

Recovering European River Invertebrate Communities Homogenize or Differentiate Depending on Anthropogenic Stress

open access: yesGlobal Change Biology, Volume 32, Issue 1, January 2026.
(a) European river invertebrate communities showed an average increase in local richness over time (1994–2023), indicating partial local recovery following the alleviation of anthropogenic stress (e.g., point‐source pollution). However, this local recovery was not accompanied by increases in β‐diversity, likely due to persistent, unaddressed stressors,
Daniela Cortés‐Guzmán   +9 more
wiley   +1 more source

Foliar spectral signatures reveal adaptive divergence in live oaks (Quercus section Virentes) across species and environmental niches

open access: yesNew Phytologist, Volume 248, Issue 1, Page 370-388, October 2025.
Summary Genomic tools have advanced our understanding of species and population structure, but distinguishing neutral from adaptive evolution remains challenging due to limited methods for measuring a broad spectrum of phenotypic traits. We used spectroscopic data from preserved leaves to test for adaptive divergence among populations of live oaks ...
Mariana S. Hernández‐Leal   +3 more
wiley   +1 more source

Caracterización reológica avanzada de betunes tradicionales y modificados utilizados actualmente en Chile

open access: yesRevista Ingeniería de Construcción, 2012
El objetivo de esta investigación fue obtener una caracterización reológica y clasificación avanzada para un grupo de betunes asfálticos modificados y sin modificar utilizados actualmente en Chile.
Carlos Wahr   +5 more
doaj   +1 more source

Proteína crioprotectora con actividad 1-3- -glucanasa a bajas temperaturas, procedimiento para su obtención y sus aplicaciones [PDF]

open access: yes, 2008
Proteína crioprotectora con actividad 1-3- -glucanasa a bajas temperaturas, procedimiento para su obtención y sus aplicaciones. La presente invención describe una nueva proteína 1-3- -glucanasa biológicamente activa a bajas temperaturas, en un ...
Goñi Ramos, Óscar   +2 more
core  

CALIDAD DE NARANJA ‘VALENCIA’ DURANTE EL ALMACENAMIENTO A BAJA TEMPERATURA

open access: yesRevista Chapingo Serie Horticultura, 2001
The quality of non waxed (control) and waxed ‘Valencia’ oranges was evaluated during a storage at 2 °C and 6 °C, and after marketing conditions (20 °C for six days). Every week during the cold storage, the fruits were evaluated for: Maturity index (total soluble solids/titratable acidity), color (a/b ratio), weight loss, chilling injury (CI), and decay.
A. Rodríguez-Félix   +3 more
openaire   +1 more source

Plant Responses to Anomalous Heat and Drought Events in the Sonoran Desert

open access: yesGlobal Change Biology, Volume 31, Issue 5, May 2025.
What are the impacts of region‐wide heat and drought events on desert vegetation? This multi‐scale assessment shows that columnar cacti and succulent trees show acute plant stress across the Sonoran Desert. The expected increased frequency of heat and drought events will likely have landscape‐wide impacts that could fundamentally reshape populations of
Benjamin T. Wilder   +10 more
wiley   +1 more source

Die verwendung von chlorkalk für das bauen im winter

open access: yesMateriales de Construccion, 1955
Se presenta un nuevo procedimiento para contrarrestar la acción nociva de las temperaturas bajas sobre los morteros y hormigones. Se Detallan su fundamento, ventajas e inconvenientes. El procedimiento es económico.
L. Savtschev
doaj   +1 more source

When do citizen scientists record biodiversity? Non‐random temporal patterns of recording effort and associated factors

open access: yesPeople and Nature, Volume 7, Issue 4, Page 860-870, April 2025.
Abstract Citizen science data are increasingly used for ecological research, biodiversity conservation and monitoring. However, these data often present significant analytical challenges due to uneven recording efforts by citizen scientists. Biases caused by intra‐annual differences in levels of recording activity can be particularly severe, hindering ...
Inês T. Rosário   +3 more
wiley   +1 more source

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