Results 41 to 50 of about 4,002 (118)

Design and Validation of a Passive Solar Tracking Sensor Based on Gnomon Shadow Analysis

International Journal of Photoenergy, Volume 2026, Issue 1, 2026.
Solar tracking is essential for efficiency, yet current market solutions present a trade‐off: Active systems are precise but expensive and computationally demanding, while low‐cost passive systems (e.g., LDRs) often lack accuracy. To address this gap, this work presents the design and validation of a passive solar tracking sensor based on gnomon shadow
Job Ordaz-Castillo, Héctor D. García-Lara, Santos Méndez-Díaz, Oscar A. de la Garza, Simón Martínez-Martínez, Carlo Renno   +5 more
wiley   +1 more source

Reliability-informed life-cycle cost analysis for asset onboarding under ISO 55001:2024: application to truck-mounted cranes

Dyna
For organizations that rely on physical assets, ISO 55001:2024 offers a structured way to establish and improve an asset management system so that performance, risk and life-cycle cost can be managed coherently.
Juan David Rodríguez-Aragón, Williams Steve Hincapie-Campos, Víctor Manuel Carrillo-Álvarez, Rosa Inés Rincón-Romero   +3 more
doaj   +1 more source

Nanoparticles From Infusion Beverage Wastes and Their Effect on PLA/PHB Plasticized Composite Behavior

Journal of Applied Polymer Science, Volume 142, Issue 46, December 10, 2025.
Schematic overview of the valorization of yerba mate and black tea waste into lignocellulosic nanoparticles (nYM, nBT), incorporated into PLA/PHB films plasticized with maleinized corn oil (MCO). The resulting bionanocomposites exhibited enhanced barrier and mechanical performance, making them suitable for biodegradable food packaging applications ...
Jaume Sempere‐Torregrosa, Harrison de la Rosa‐Ramírez, Franco Dominici, Debora Puglia, Luigi Torre, María Dolores Samper   +5 more
wiley   +1 more source

New "sandwich" structures conformed from three dimensional

Materiales de Construccion, 1996
Poor interlaminar properties as well as poor-skin-to-core adhesion properties are very often the common existing problems we find when designing with "sandwich" structures. A new type of 3D-fabric "sandwich" structure is being developed in order to avoid
Juan J. Alba, Miguel A. Jiménez, A. Miravete   +2 more
doaj   +1 more source

A portable graphite calorimeter for onsite reference dosimetry and beam quality correction factor determination

Journal of Applied Clinical Medical Physics, Volume 26, Issue 12, December 2025.
Abstract Purpose To present a portable, reliable, and fast setup graphite calorimeter for onsite absolute dose measurements at hospitals. Methods We have designed and built a portable graphite calorimeter optimized for fast setup and accurate measurements at clinical centers. Our system has minimum readout and auxiliary electronics and is inserted in a
Nicolás Gómez‐Fernández, Jorge Deus‐Abreu, David Maughan, Faustino Gómez, Diego M. González‐Castaño   +4 more
wiley   +1 more source

Toward Circular Textile Waste Management in Macaronesia: A Comparative Policy and Infrastructure Analysis

Environmental Quality Management, Volume 35, Issue 2, Winter 2025.
ABSTRACT The increasing volume of textile waste in Europe presents a critical environmental and economic challenge, particularly in isolated regions such as the Canary Islands and the broader Macaronesian region. This study presents a comprehensive review of textile waste generation, legislation, and management strategies across Europe, with a special ...
Zaida Ortega, Pablo Bordón, Rubén Paz
wiley   +1 more source

Estudio de los tipos de cráteres obtenidos en el impacto de proyectiles 5,56 SS109, sobre blancos de acero AISI-SAE 1045

Revista de Metalurgia, 2000
En el presente trabajo se describe la morfología y formación de los tipos de cráteres obtenidos, en el impacto de proyectiles 5,56 SS109, sobre siete chapas de acero AISI-SAE 1045 que fueron sometidas a diferentes tratamientos térmicos, comparando el ...
Álvaro Castro, Edgar Espejo, Leonardo Martínez   +2 more
doaj   +1 more source

A Hardware‐in‐the‐Loop and 3D Simulation Framework for Active Learning in Engineering Education

Computer Applications in Engineering Education, Volume 33, Issue 6, November 2025.
ABSTRACT This paper describes the implementation of an industrial control system using the Hardware‐in‐the‐Loop (HIL) technique, integrating a Siemens S7‐1200 PLC with a virtual plant developed in Unity 3D, using the Modbus TCP communication protocol.
Jessica S. Ortiz, Manuel A. Masapanta, Víctor H. Andaluz, Christian P. Carvajal   +3 more
wiley   +1 more source

Análisis de la avería de un generador de escamas de hielo. // Analysis of the failure of ice flake generator.

Ingeniería Mecánica, 2008
En el trabajo se realizó una investigación para esclarecer las causas de la avería del generador de escamas de hielo No.1 dela empresa EPICIEN de Cienfuegos el cual fue instalado recientemente y fue suministrado por la firma Frigofrance S.A.Desde su ...
R. Goytisolo Espinosa, J. G. Noa Aguila, L. Castellanos González, A. Borroto Nordelo, S. Montelier Hernández, A. Fernández Cañizares   +5 more
doaj  

The crucial role of meshing in computational fluid dynamics simulations for organic geometries in paleobiology: Describing fluid dynamics performance through best practices

Methods in Ecology and Evolution, Volume 16, Issue 10, Page 2170-2194, October 2025.
Abstract Computational fluid dynamics (CFD) has become an essential tool for studying fluid interactions in biological systems. While widely used in engineering, its application in the natural sciences, particularly in paleobiology, remains limited due to the challenges of meshing complex organic geometries.
Matheo López‐Pachón, Jordi Marcé‐Nogué   +1 more
wiley   +1 more source