Results 31 to 40 of about 2,692,349 (306)

The neotropical genus Trichoprosopon Theobald 1901 (Diptera: Culicidae) in Colombia: records of distribution and medical importance

open access: yes, 2021
Los mosquitos tienen un papel importante en la transmisión de parásitos y patógenos con efectos en la salud humana y animal, y algunos son también indicadores de la salud de los ecosistemas.
Uribe Soto, Sandra   +1 more
core   +1 more source

X‐Functionality–Driven Photocatalytic Hydrogen Evolution in 2D 4‐X‐PEA2SnI4 Perovskites

open access: yesAdvanced Functional Materials, EarlyView.
We report a water‐based synthesis of 2D 4‐X‐PEA2SnI4 perovskite microcrystals with prominent photocatalytic (PC) activity for H2 production. The synergy between organic functionalization and HI‐derived iodide scavenges holes suppress octahedral distortion, and favor electron accumulation, enabling a PC H2 evolution ∼20 µmol·g−1 and long‐term stability ...
Taeyeon Kim   +21 more
wiley   +1 more source

Caracterización térmica, mecánica y morfológica de fibras naturales colombianas con potencial como refuerzo de biocompuestos

open access: yes, 2018
Este estudio se enmarca en el campo de la ciencia e ingeniería de materiales enfocada al desarrollo de nuevos compuestos amigables con el medio ambiente.
Mora Espinosa, William J.   +3 more
core   +1 more source

Hydrogel‐Based 3D‐Printed Anthropomorphic Breast Phantom for Emulating Mechanical and Dielectric Properties of Mammary Tissue. Applications in Microwave Imaging

open access: yesAdvanced Functional Materials, EarlyView.
A 3D‐printable breast phantom is developed using patient‐derived MRI data and hydrogels that replicate the dielectric properties of healthy and cancerous tissues. Mechanical and dielectric characterization confirm its suitability for microwave imaging.
Carlos M. Andreu   +5 more
wiley   +1 more source

Ciencias naturales y filosofía

open access: yesECA: Estudios Centroamericanos, 1955
No abstract available.      ECA Estudios Centroamericanos, Vol. 10, No. 95, 1955: 321-326.
openaire   +1 more source

Museo Nacional de Ciencias Naturales [PDF]

open access: yes, 2007
Plano tridimensional del Museo Nacional de Ciencias Naturales (MNCN) en 2007, con la presentación de algunas colecciones permanentes.Peer ...
CSIC - Museo Nacional de Ciencias Naturales (MNCN)
core  

WHAT ON THE LIGHTNING DO WE KNOW?

open access: yes, 2010
Este trabajo ha sido elaborado para la presentación como Miembro Correspondiente de la Academia Colombina de Ciencias Exactas, Físicas y Naturales. Tiene un enfoque sobre la importancia del entendimiento de los fenómenos naturales como el rayo en las ...
Torres-Sánchez, Horacio
core   +1 more source

Confinement in Metal‐Organic Frameworks as a Route to Harnessing Liquid Barocalorics in the Solid‐State

open access: yesAdvanced Functional Materials, EarlyView.
Encapsulation of solid–liquid barocalorics (BC) within MOFs harnesses their colossal BC performance whilst allowing active control of BC properties through BC‐MOF interactions. ABSTRACT Barocaloric (BC) effects at liquid–vapor transitions in hydrofluorocarbons drive most commercial technologies used for heating and cooling in the heating, ventilation ...
Ming Zeng   +8 more
wiley   +1 more source

Analysis and geometry on non-smooth domains

open access: yes, 2018
Esta nota esta basada en la charla de posesión como Miembro Correspondiente de la Academia Colombiana de Ciencias Exactas Fisicas y Naturales. En ella describo algunos de los resultados recientes en un area de análisis que esta enfocada en entender la ...
Toro, Tatiana, Tatiana Toro
core   +1 more source

Architecture‐Driven Functional Coupling in Vertically Aligned Nanocomposites

open access: yesAdvanced Functional Materials, EarlyView.
Vertically aligned nanocomposites define a growth‐engineered architecture in which vertical interfaces, strain fields, defect pathways, and phase connectivity are created simultaneously. This review shows how these architectural features couple ferroic, optical, ionic, electrochemical, and device responses, establishing design rules and open challenges
Md Shatil Islam‐Shanto   +4 more
wiley   +1 more source

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