Results 261 to 270 of about 119,953 (318)

Portulaca eggliana (Portulacaceae), a new species from the Brazilian Amazonian savannas

open access: yesNordic Journal of Botany, EarlyView.
A new species of Portulacaceae from the Amazonian savannas of northern Brazil is herein described and illustrated. Portulaca eggliana is morphologically related to P. umbraticola, but differs in the number of involucral leaves, sepal morphology, bracteole shape, and seed surface.
José Roberto Ferraz   +4 more
wiley   +1 more source

High-Resolution Mechanoluminescent Haptic Sensor via Dual-Functional Chromatic Filtration by a Conjugated Polymer Shell. [PDF]

open access: yesAdv Mater
Jeong HI   +11 more
europepmc   +1 more source

Multiple scales of fear: foraging behaviour of white‐naped jays in semiarid landscapes

open access: yesOikos, EarlyView.
Animals must constantly balance the need to find resources with the risk of predation. Not only avoiding direct encounters with predators but also assessing the overall risk of their environment using cues, social information or habitat traits at multiple spatial and temporal scales.
Maria Carolina Beiriz   +2 more
wiley   +1 more source

Colours of urban selection: carotenoid‐based signals reveal divergent urban/rural evolutionary trajectories in two closely related passerines

open access: yesOikos, EarlyView.
Urbanisation is a major driver of environmental change, reshaping ecological and evolutionary processes. Urban‐driven phenotypic differences are increasingly documented, but the underlying role of selection is still understudied. One pattern is the consistent reduction of carotenoid‐based plumage pigmentation in city birds.
Nicolas Bekka   +3 more
wiley   +1 more source

Water‐Borne Erosion of Reinforced Polymer Composites: Application to Shallow Offshore Marine Environment

open access: yesPolymer Composites, EarlyView.
Comparison of experimental and model‐predicted erosion rates for carbon fibre‐reinforced polymer (CFRP) and glass fibre‐reinforced polymer (GFRP) under low‐velocity (2 m/s) and at varying angles and sand concentrations (0.0, 0.05, 0.4 g/L). The results demonstrate good agreement between experimental data and model predictions across different erosive ...
Ali Al‐Darraji   +4 more
wiley   +1 more source

Green flowers need yellow to get noticed in a green world. [PDF]

open access: yesAnn Bot
Del Valle JC   +7 more
europepmc   +1 more source

Eco‐Friendly Bioplastic Film Produced With Green Plantain Starch (Musa paradisiaca L.): Effect of Activated Carbon Addition and Hydrothermal Modification

open access: yesPolymer Composites, EarlyView.
Activated Carbon as a Reinforcing Material for Starch Bioplastics. ABSTRACT Eco‐friendly starch‐based bioplastic films reinforced with activated carbon (AC) were produced using green plantain starch in its native and heat‐moisture treatment (HMT) forms to overcome typical limitations of starch materials, such as low mechanical strength and poor water ...
Eduardo Bruno Macêdo Viana   +8 more
wiley   +1 more source

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