Results 21 to 30 of about 24,952 (150)
, 2012 In this work we study the dynamics of gravitational collapse of a homogeneous dust sphere in a model exhibiting a linear non-minimal coupling between matter and curvature. The evolution of the scale factor and the matter density is obtained for different
Bastos, C., Páramos, J.
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Actualidades Biológicas, 2016 En la presente investigación se estableció un protocolo de micropropagación para Espeletia paipana S. Díaz y Pedraza, especie en peligro de extinción con una población actual de 26 plantas adultas.
María A. Bohórquez-Quintero +2 more
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Underground Lag: Fungal Community and Edaphic Legacies After Disturbance
Land Degradation &Development, EarlyView.ABSTRACT Páramos are neotropical mountain ecosystems that regulate water and store large amounts of carbon, but are increasingly degraded by agriculture and grazing. Although native vegetation often recolonizes after abandonment, belowground recovery remains poorly understood.
Wilmer Dajhan Navarrete‐López +6 more
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Probing the Flyby Anomaly with the future STE-QUEST mission
, 2012 In this study, we demonstrate that the flyby anomaly, an unexpected acceleration detected in some of the gravitational assists of the Galileo, NEAR, Cassini and Rosetta spacecraft, could be probed by accurate orbital tracking available in the proposed ...
Hechenblaikner, Gerald, Páramos, Jorge
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The underappreciated roles of fog and dew on vegetation and biocrusts
New Phytologist, EarlyView.Summary Fog and dew represent minor components of ecosystem water budgets in most ecosystems. However, fog and dew can play an essential role in ecosystem dynamics and are particularly important for water‐limited systems. In addition to serving as direct water inputs, fog and dew can influence microclimate and water redistribution, thereby promoting ...
Lixin Wang, Yue Li, Mengyun Sun, Na Qiao
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Using global positioning systems to test extensions of General Relativity
, 2011 We consider the feasibility of using the Galileo Navigation Satellite System to constrain possible extensions or modifications to General Relativity, by assessing the impact of the related additions to the Newtonian potential and comparing with the ...
Bertolami, O., Páramos, J.
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Estudio florístico de los páramos de pajonal meridionales de Ecuador
Revista Peruana de Biología, 2013 El presente trabajo es un estudio de la flora de los páramos de pajonal seriales de distintos macizos montañosos de los Andes del Sur de Ecuador (provincias de Azuay y Loja) comprendidos entre los 2850 m y 3635 m.
Jesús Izco +3 more
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TAXON, Volume 75, Issue 3, June 2026.Abstract During their voyage to the Americas (1799–1804), Alexander von Humboldt and Aimé Bonpland described and collected American flora, fauna, minerals and other objects. After returning to Europe, they published several works, including Monographie des Melastomacées, initiated by Bonpland to classify this complex botanical family.
Marina Ramos de Azevedo +1 more
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Two-scalar-field model for the interaction of dark energy and dark matter
, 2012 In this paper, we study the effects of an interaction between dark matter and dark energy through a two scalar field model with a potential $V(\phi,\chi)=e^{-\lambda\phi}P(\phi,\chi)$, where $P(\phi,\chi)$ is a polynomial.
C. Wetterich +3 more
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Frontiers in Ecology and Evolution, 2023 Páramos are one of the flagship ecosystems in the Northern Andes; the provision of water for millions of people in this region depends on these unique high mountains located at above 3,500 m of altitude.
Camilo Castillo-Estupiñan
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