Results 31 to 40 of about 526 (131)

Effect of Polypropylene‐Grafted‐Maleic Anhydride and Rice Husk Particle Size on 3D‐Printing Filament Composites From Recycled Polypropylene

Polymer Composites, Volume 46, Issue 16, Page 15125-15141, 10 November 2025.
Development of 3D printing composite filaments from recycled polypropylene and agro‐industrial residues: blending, extrusion, and mechanical validation. ABSTRACT This study evaluates the combined roles of particle size and the addition of maleic anhydride polypropylene (PP‐g‐MAH) to improve 3D printing and mechanical properties of composite filaments ...
Maria A. Morales, Juan Porras, Alejandro Maranon, Juan Pablo Casas, Camilo Hernandez, Véronique Michaud, Alicia Porras   +6 more
wiley   +1 more source

Mosaic morphology in Podocnemididae revealed by a new turtle from the Middle Miocene La Venta Biome, Colombia

Papers in Palaeontology, Volume 11, Issue 6, November/December 2025.
Abstract A new genus and species of podocnemidid turtle, Shakiremys colombiana, is described here from the Middle Miocene La Venta Biome, located in south‐central Colombia. The new taxon is represented by two specimens: one consisting of a complete skull and articulated shell, and the other of an articulated shell only.
Edwin‐Alberto Cadena, David E. Leal‐Amaya, Andrés Vanegas‐Vanegas, Rubén D. Vanegas‐Vanegas, Lino J. E. Guevara‐Serrano   +4 more
wiley   +1 more source

Building malware classificators usable by State security agencies

Iteckne, 2018
El sandboxing ha sido usado de manera regular para analizar muestras de software y determinar si estas contienen propiedades o comportamientos sospechosos.
David Esteban Useche-Peláez, Daniel Orlando Díaz-López, Daniela Sepúlveda-Alzate, Diego Edison Cabuya-Padilla   +3 more
doaj   +1 more source

Spatio‐Temporal Representation of Mesoscale Convective Systems in Convection‐Permitting Simulations Over Northwestern South America: Insights Into Rainfall Overestimation

Journal of Geophysical Research: Atmospheres, Volume 130, Issue 7, 16 April 2025.
Abstract We perform km‐scale convection‐permitting simulations (Δx = 4 km) to represent Mesoscale Convective Systems (MCSs) in Northwestern South America using the Weather Research and Forecasting (WRF) model. An algorithm to identify and track MCSs was used to characterize simulated MCS features and compare with satellite observations.
K. Santiago Hernández, Juan J. Henao, Sebastián Gómez‐Ríos, Vanessa Robledo, Angela M. Rendón, John F. Mejía   +5 more
wiley   +1 more source

Propuesta metodológica para la planeación de la evaluación de los Resultados de Aprendizaje de un Programa Académico

Signos, 2023
La evaluación de resultados de aprendizaje de programa es actualmente un tema con importante auge en aplicación para la educación superior en Colombia debido a los requisitos normativos; sin embargo, hay muy poca información sobre cómo planear dicha ...
Javier Urbano-T, Óscar Vanegas
doaj   +1 more source

Study of the Performance and Smoke Density When Gasoline–Diesel Blends Are Used as Fuel of a Diesel Engine

Journal of Engineering, Volume 2025, Issue 1, 2025.
The world is currently facing a serious environmental crisis, partly driven by the pollutant emissions from diesel engines. Although these engines are known for their efficiency, their emission levels are highly dependent on fuel quality. In Colombia, despite having one of the highest‐quality fuels in the region, its properties still fall short of ...
L. F. Mónico, O. Venegas, Xinli Tong
wiley   +1 more source

Climatological Tracking and Lifecycle Characteristics of Mesoscale Convective Systems in Northwestern South America

Journal of Geophysical Research: Atmospheres, Volume 129, Issue 19, 16 October 2024.
Abstract Mesoscale convective systems (MCSs) are crucial in shaping large‐scale tropical circulation and the hydrological cycle, particularly in Northwestern South America (NwSA), a region marked by complex terrain and significant MCS activity. Understanding MCSs in NwSA is vital due to their impact on precipitation patterns and potential for severe ...
Vanessa Robledo, Juan J. Henao, John F. Mejía, Álvaro Ramírez‐Cardona, K. Santiago Hernández, Sebastián Gómez‐Ríos, Ángela M. Rendón   +6 more
wiley   +1 more source

Adquisición y reconocimiento de imágenes por medio de técnicas de visión e inteligencia artificial

Iteckne, 2009
Este proyecto presenta un sistema que permite reconocer diferentes figuras geométricas, que se encuentran en una banda transportadora. Para el posicionamiento de la banda transportadora se utiliza la técnica de lógica difusa.
Diana Carolina Ramírez González, Guillermo Pulido Sarmiento, Beatriz Gerardino Arévalo, José Manuel Cruz Romero, Enrique Estupiñán Escalante, Sandra Cancino Suárez   +5 more
doaj   +1 more source

Development of a hazard risk map for assessing pedestrian risk in urban flash floods: A case study in Cúcuta, Colombia

River, Volume 3, Issue 1, Page 8-23, February 2024.
This study introduces a cutting‐edge approach to assess pedestrian risk in urban flood scenarios, applied to Cúcuta, Colombia, using a calibrated hydrological model and image recognition algorithms. It reveals a notable increase in risk with extended return periods, emphasizing the need for dynamic safety measures in urban planning.
Gerald Augusto Corzo Perez, Diego Ivan Sanchez Tapiero, Manuel Antonio Contreras Martínez, Chris Zevenbergen   +3 more
wiley   +1 more source

El sector de ganadería bovina en Colombia. aplicación de modelos de series de tiempo al inventario ganadero

Revista Facultad de Ciencias Económicas, 2007
Este documento realiza una estimación del inventario ganadero bovino en Colombia, tendiente a dar luces sobre la probabilidad de las políticas de desarrollo ganadero en el país, básicamente con miras a aportar instrumentos metodológicos como modelos
Noel José Cuenca Jiménez, Fernando Chavarro Miranda, Oscar Humberto Díaz Gantiva   +2 more
doaj