Results 41 to 50 of about 126,599 (265)

Stomatal distribution and post‐fire recovery: Intra‐ and interspecific variation in plants of the pyrogenic Florida scrub

open access: yesAmerican Journal of Botany, EarlyView.
Abstract Premise Amphistomy, the presence of stomata on both leaf surfaces, can increase photosynthesis yet is uncommon across vascular plants. The relative infrequency of amphistomy is often attributed to high costs, such as transpirational water loss.
Genevieve Triplett, Aaron S. David
wiley   +1 more source

Análisis de Eficiencia en Sistemas de Cómputo de Alta Performance Reconfigurables

open access: yesTecnología y Ciencia, 2018
El objetivo de este trabajo es presentar la arquitectura y las características del sistema para el estudio de las nuevas técnicas de procesamiento paralelo en el desarrollo de sistemas de cómputo de aplicaciones específicas de altas prestaciones.
Martín Morales   +3 more
doaj   +1 more source

Efecto de la ceniza volcánica sobre la supervivencia de ortópteros en la Patagonia [PDF]

open access: yes, 2015
El objetivo de este trabajo fue evaluar la toxicidad de las cenizas volcánicas del volcán Puyehue-cordón Caulle en la supervivencia de dos especies de Orthoptera: la tucura Dichroplus vittigerum y la langosta verde Brugilis sp.
Amadio, María Emilia   +5 more
core  

Riverine transfer of heavy metals from Patagonia to the southwestern Atlantic Ocean [PDF]

open access: yes, 2002
The occurrence and geochemical behaviour of Fe, Mn, Pb, Cu, Ni, Cr, Zn and Co are studied in riverine detrital materials transported by Patagonian rivers.
Depetris, Pedro J.   +4 more
core   +1 more source

Comparative and functional anatomy of masticatory muscles and bite force in opossums (Didelphimorphia, Didelphidae)

open access: yesThe Anatomical Record, EarlyView.
We describe the functional anatomy of masticatory muscles in nine opossums, finding a generalized anatomical pattern with differences related to skull morphology. Variation in quantitative myological data and estimated bite force was mostly related to size, and the increase in bite force supports dietary diversification associated with size increase ...
Juann A. F. H. Abreu, Diego Astúa
wiley   +1 more source

Bioensayo de toxicidad aguda con plantas nativas para evaluar un derrame de petróleo

open access: yesRevista de Salud Ambiental, 2015
Los bioensayos con plantas constituyen una excelente herramienta en la evaluación del riesgo ambiental y, en particular, la utilización de semillas de plantas vasculares es recomendada debido a su mayor sensibilidad.
Vivien Pentreath   +4 more
doaj   +2 more sources

Isolation and partial characterization of soils actinomycetes with antimicrobial activity against multidrug-resistant bacteria

open access: yesRevista Colombiana de Biotecnología, 2017
Two hundred and thirty four actinobacteria strains were isolated from Argentinian and Peruvian soil in order to evaluate the antimicrobial activity against multidrug resistant bacteria On the basis of their antagonist activity against methicillin ...
Romina Belén Parada   +2 more
doaj   +1 more source

Beak deformities in north Patagonian birds [PDF]

open access: yes, 2016
Within the last decade, many individuals of several bird species with abnormal and strange beaks deformationshave been reported from Alaska, United States, and from United Kingdom and Ireland.
Cueto, Víctor   +2 more
core   +1 more source

New Data on Armadillos (Xenarthra: Dasypodidae) for Central Patagonia, Argentina [PDF]

open access: yes, 2010
Armadillos represent the most diverse family of xenarthrans. Although many studies have been done on these mammals, several topics, such as their local distribution, natural history, behavioral ecology and conservation, remain poorly known ...
Abba, Agustin Manuel   +2 more
core   +2 more sources

Sustainability Orientation, Sustainability Implementation, and Brand Image in Service Firms

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT This paper uses legitimacy theory and cognitive dissonance theory to explore the relationship between sustainability orientation, sustainability implementation, and brand image in the service sector. Specifically, we examine the mediating role of implementation—the translation of strategic intent into actionable practices—on customers ...
Sandeep Jagani, Vafa Saboori‐Deilami
wiley   +1 more source

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