Results 71 to 80 of about 1,588 (186)

Modificación de los aceros rápidos de herramientas AISI M2 por fusión superficial con láser bajo diferentes condiciones de operación

open access: yesRevista de Metalurgia, 2010
Se ha aplicado el tratamiento superficial de fusión con láser a un acero comercial rápido de herramientas AISI M2, templado y revenido, y se ha estudiado su microestructura superficial y comportamiento mecánico (dureza y resistencia al desgaste).
J. Arias   +5 more
doaj   +1 more source

Cybianthus anthuriophyllus (Primulaceae), a new record for the flora of Colombia: distribution modeling and conservation assessment

open access: yesNordic Journal of Botany, EarlyView.
Cybianthus anthuriophyllus (Primulaceae) was previously known from eastern Ecuador and northern Peru. Here we document the first confirmed occurrences of this species in Colombia and develop a distribution model based on collections from the Andean–Amazonian foothills of Caquetá, Cauca, and Putumayo departments, in order to clarify its conservation ...
David Hoyos   +4 more
wiley   +1 more source

Estudio de polvos y recubrimientos metaestables de NiTi obtenidos por proyección térmica de plasma

open access: yesRevista de Metalurgia, 2008
El compuesto intermetálico de NiTi es conocido por su capacidad de memoria de forma así como por su pseudoelasticidad. Debido, además, a su alta resistencia a corrosión (biocompatiblidad), la gran mayoría de estudios se centran en su uso para ...
I. G. Cano   +3 more
doaj   +1 more source

Multi‐Scale Characterization of PLA Composites With Natural‐Based Reinforcements: From Filament to 3D‐Printed Parts

open access: yesPolymer Composites, EarlyView.
Thermal, microstructural, and mechanical characterization of 3D‐printed PLA composite parts. ABSTRACT To address plastic waste and agricultural residue underutilization, this study evaluates the thermal (DSC and FTIR), microstructural (SEM), and mechanical behavior of polylactic acid (PLA) reinforced with flax fibers and olive pit particles, processed ...
P. N. B. Reis   +6 more
wiley   +1 more source

Process‐Induced Anisotropy and Fracture Behavior of Pellet‐3D Printed PLA and PLA/Flax Biocomposites

open access: yesPolymer Composites, EarlyView.
Fused Granular Fabrication of PLA and PLA/flax biocomposites, followed by tensile testing and fracture surface analysis to evaluate the effects of raster orientation and layer number on anisotropy and fracture behavior. ABSTRACT Fused granular fabrication (FGF) enables cost‐effective, large‐scale polymer additive manufacturing; however, the mechanical ...
Fernando Ancio   +2 more
wiley   +1 more source

Evaluating astigmatid mites as supplemental food for Macrolophus pygmaeus: contrasting responses between commercial and wild populations

open access: yesPest Management Science, EarlyView.
Astigmatid mites provide low‐cost supplemental food for Macrolophus pygmaeus, supporting survival and development, with population‐specific responses and Acarus siro and Carpoglyphus lactis as the most promising alternatives. Abstract BACKGROUND Early establishment of Macrolophus pygmaeus in crops depends on the availability of supplemental food ...
María del Carmen Reche   +5 more
wiley   +1 more source

Social, Technological, Economic, and Policy Factors in the Circular Economy Transition in Brazil

open access: yesSustainable Development, EarlyView.
ABSTRACT A well‐functioning circular economy (CE) integrates resilience across economic, environmental, and social dimensions. This study identifies key drivers and barriers to Brazil's CE transition through 20 semi‐structured interviews with stakeholders. Major sociocultural barriers include inadequate education and limited CE awareness, while growing
Alejandro Gallego‐Schmid   +9 more
wiley   +1 more source

Business Model and Sustainable Development Goals for an Innovative Agricultural Waste Management: Distributed Biogas Production

open access: yesSustainable Development, EarlyView.
ABSTRACT Technological progress and population growth have increased global pork demand; leading to a rise of methane emission from pig farming, a key contributor to climate change. Anaerobic digestion offers a sustainable solution by converting manure into biogas.
María‐Pilar Martínez‐Hernando   +5 more
wiley   +1 more source

Green Transformational Leadership, GHRM, and Pro‐Environmental Behavior: Pathways to Sustainable Healthcare

open access: yesSustainable Development, EarlyView.
ABSTRACT This study examines the impact of green transformational leadership, green human resource management, and pro‐environmental behavior on sustainable performance. Despite the increasing emphasis on environmental sustainability, the mechanisms through which organizational practices translate into sustainable outcomes remain insufficiently ...
Sharifa Khalid. Mousa   +2 more
wiley   +1 more source

Covalent Functionalization of NiFe Layered Double Hydroxides using Tris(Hydroxymethyl)Aminomethane

open access: yesSmall, EarlyView.
Covalent functionalization of NiFe layered double hydroxides with tris(hydroxymethyl)aminomethane enables controlled growth, enhanced structural order, and improved processability. Temporary TRIS anchoring promotes stable water‐based inks and binder‐free electrode fabrication, leading to enhanced oxygen evolution activity and long‐term stability under ...
Alvaro Seijas Da Silva   +8 more
wiley   +1 more source

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