Results 31 to 40 of about 17,641 (225)

Diseño y construcción de un anemómetro ultrasónico de bajo costo utilizando tecnología IoT

open access: yesRevista Minerva, 2023
Los fenómenos meteorológicos como ráfagas de viento afectan a El Salvador y son monitoreados por distintas estaciones meteorológicas alrededor del país.
Diego Lopez, Jose Ezequiel Torres Torres
doaj   +1 more source

ENERGÍA Y MEDIOAMBIENTE

open access: yesGestión y Ambiente, 2008
El presente artículo plantea algunos aspectos de la problemática ambiental originada por el consumo de los combustibles derivados del petróleo tipo gasolina y ACPM, a nivel mundial y nacional, lo mismo que la solución planteada por el gobierno nacional ...
Vargas Gómez Celso Antonio
doaj   +2 more sources

La participación ciudadana como mecanismo de protección del medioambiente: el caso de la consulta previa en comunidades étnicas

open access: yesPrecedente, 2022
El presente artículo aborda el tema de la consulta previa como mecanismo de participación democrática y derecho fundamental enfocado en la protección del medioambiente, las comunidades étnicas, su entorno sociocultural y la relación entre el territorio ...
Yecid Echeverry Enciso
doaj   +1 more source

Synergetic Combination of Carbon Xerogels, Graphene Oxide and nano‐ZnO for Aqueous and Organic Supercapacitors

open access: yesBatteries &Supercaps, Volume 8, Issue 3, March 2025.
This work proposes the synthesis of carbon‐based nanostructured materials obtained using ZnO as both nanos‐ template and catalysts simultaneously. During the synthesis, GO was used as a stabiliser, preventing the collapse of the 3D structure and improving its properties in terms of capacitance and surface area.
Rusbel Coneo‐Rodríguez   +5 more
wiley   +1 more source

Interaction between Vespula germanica and Apis mellifera in Patagonia Argentina apiaries

open access: yes, 2021
Social wasps are important predators of honeybees, attacking hives to steal honey, pollen, larvae, and adults. Wasps of the genus Vespula are considered agricultural pests in many invaded areas, but their impact on Apis mellifera in these areas is poorly
Alma, Andrea Marina   +3 more
core   +1 more source

Liquid‐phase oxidation of furfural catalyzed by magnetically separable metal oxide nanoparticles deposited on silica gel

open access: yesBiofuels, Bioproducts and Biorefining, EarlyView.
Abstract Oxidation of furfural (FF), a bio‐based platform chemical, was investigated using a range of iron‐, vanadium‐ and iron–zinc‐oxalates supported on silica gel (FeVOx@silica and FeZnOx@silica, respectively) as precursor for FeV@silica and FeZn@silica oxide catalysts and H2O2 as a green oxidant.
Alexander Pokutsa   +2 more
wiley   +1 more source

Priority areas for arthropod conservation in the Iberian Peninsula and Balearic Islands: Insights from a multi‐taxon distributional database

open access: yesInsect Conservation and Diversity, EarlyView.
Using over 416,000 occurrence records from 13 arthropod groups (6233 arthropod species), we mapped large‐scale richness patterns and identified biodiversity hotspots across the Iberian Peninsula and Balearic Islands. Hotspot congruence among arthropod groups was low, underscoring the importance of integrative, multi‐taxon approaches for conservation ...
David Sánchez‐Fernández   +30 more
wiley   +1 more source

RSC círculo virtuoso : rentabilidad-medioambiente

open access: yes, 2005
La Responsabilidad Social Corporativa/Empresarial es relativamente un fenómeno reciente en el desarrollo social y aún más en la cultura de negocios corporativa. En muchos sentidos, la responsabilidad social corporativa avanza como contracultura a la idea
García López, María José
core   +1 more source

The plant growth-promoting effect of an Ascophyllum nodosum (L.) extract derives from the interaction of its components and involves salicylic-, auxin- and cytokinin-signaling pathways

open access: yesChemical and Biological Technologies in Agriculture
Background Ascophyllum Nodosum (L.) Extracts (ANE), even at low concentrations, are reported to behave as plant growth promoters and inducers of resistance to diverse abiotic and biotic stresses.
Maite Olaetxea   +6 more
doaj   +1 more source

Substrate scope of ancestral versus modern family‐1 glycosidases

open access: yesProtein Science, Volume 35, Issue 7, July 2026.
Abstract Experimental studies support that protein engineering based on ancestral sequence reconstruction often leads to variants with biotechnologically useful biomolecular properties. These may include high stability, enhanced conformational flexibility and a modified catalysis range.
Luis I. Gutierrez‐Rus   +11 more
wiley   +1 more source

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