Results 71 to 80 of about 300,786 (310)

Comparative field‐scale assessment of TLUD and Kon‐Tiki biochar systems: agronomic performance and net CO2e‐based techno‐economics

open access: yesBiofuels, Bioproducts and Biorefining, EarlyView.
Abstract Post‐harvest agricultural residues in Latin America are commonly underutilized, leading to greenhouse gas emissions and lost opportunities for bio‐based value creation. This study tests the hypothesis that decentralized, farmer‐scale pyrolysis technologies can deliver comparable agronomic benefits while exhibiting distinct techno‐economic and ...
Juan F. Saldarriaga   +7 more
wiley   +1 more source

Middle to Late Miocene Contractional Deformation in Costa Rica Triggered by Plate Geodynamics [PDF]

open access: yes, 2017
Contractional deformation in Costa Rica is usually attributed to the subduction of the aseismic Cocos Ridge. In this work, we review the evidences for contraction in the middle to late Miocene, prior to the arrival of the Cocos Ridge at the Middle ...
Cascante, Monserrat   +8 more
core   +1 more source

Extent, characteristics and policy applications of Key Biodiversity Areas

open access: yesBiological Reviews, EarlyView.
ABSTRACT A global standard for the identification of Key Biodiversity Areas (KBAs) was published 10 years ago to provide a unified set of criteria for identifying ‘sites of significance for the global persistence of biodiversity’. We review the initiative's origins, the KBA identification process, characteristics of the current network, threats, policy
Stuart H. M. Butchart   +57 more
wiley   +1 more source

Facing unprecedented drying of the Central Andes? Precipitation variability over the period AD 1000–2100

open access: yesEnvironmental Research Letters, 2015
Projected future trends in water availability are associated with large uncertainties in many regions of the globe. In mountain areas with complex topography, climate models have often limited capabilities to adequately simulate the precipitation ...
Raphael Neukom   +7 more
doaj   +1 more source

Premiers résultats sur la sismicité de la Cordilllère Blanche (Hautes Andes du Pérou central) [PDF]

open access: yes, 1988
L'étude de la sismicité dans la Cordillère Blanche (Andes, Pérou central) montre que l'activité sismique est concentrée près d'un segment central de la faille qui sépare la Cordillère Blanche du bassin de Callejon de Huaylas et se manifeste de part et d ...
Deverchère, Jacques
core  

Unrest at Domuyo Volcano, Argentina, detected by geophysical and geodetic data and morphometric analysis [PDF]

open access: yes, 2019
New volcanic unrest has been detected in the Domuyo Volcanic Center (DVC), to the east of the Andes Southern Volcanic Zone in Argentina. To better understand this activity, we investigated new seismic monitoring data, gravimetric and magnetic campaign ...
Acosta, Gemma   +6 more
core   +1 more source

Valorization of Yacon (Smallanthus sonchifolius) peel for peroxidase production and its immobilization on alginate beads for 2,4‐dichlorophenol bioconversion

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Sodium alginate was modified with EDC/NHS for the immobilization of Yacon peel peroxidase, resulting in a novel biocatalyst for the oxidation of 2,4‐dichlorophenol. Abstract Yacon (Smallanthus sonchifolius) roots are emerging as an alternative source of peroxidase. This study aimed to extract, immobilize, and characterize the peroxidase from Yacon peel,
Mariana Gomes Oliveira   +4 more
wiley   +1 more source

Tectonics of the central Andes [PDF]

open access: yes
Acquisition of nearly complete coverage of Thematic Mapper data for the central Andes between about 15 to 34 degrees S has stimulated a comprehensive and unprecedented study of the interaction of tectonics and climate in a young and actively developing ...
Bloom, Arthur L.   +4 more
core   +1 more source

Vegetation on the move: elevational shifts and greening dynamics across the Himalayan alpine zone

open access: yesEcography, EarlyView.
This study investigates alpine ‘vegetation line' (the upper limit of continuous plant community) dynamics in the Himalayan alpine zone (HAZ) over a 24‐year timescale (1999–2022) using maximum NDVI products derived from Landsat series datasets, adjusted for sampling bias using phenological modelling.
Ruolin Leng   +5 more
wiley   +1 more source

A partir de los movimientos de un pájaro... La «danza de la perdiz» en los rituales ganaderos de los Andes peruanos [PDF]

open access: yes, 2012
This paper presents a brief look at the conception of a bird that the people of the central Andes of Peru have. We explore this perspective through the collective representations found in a ritual and in beliefs and stories about this animal in the ...
Rivera Andía, Juan Javier
core   +2 more sources

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