Results 31 to 40 of about 209,634 (164)

Graphene Oxide as an Auxiliary UV Photoprotector for Polypropylene

open access: yesPolymer Composites, Volume 46, Issue 16, Page 14986-15000, 10 November 2025.
Auxiliary UV Protection. ABSTRACT This work presents the preparation and characterization of polypropylene (PP)/graphene oxide (GO) nanocomposites by adding photostabilizing additives to obtain materials with enhanced resistance to photodegradation. The synthesized GO (modified Hummers' method) was characterized using state‐of‐the‐art techniques.
Nathalia S. S. Amorim   +3 more
wiley   +1 more source

A clinically assisted collaborative system architecture for preventing falls in elderly people [PDF]

open access: yes, 2014
Falls in older adults are not only frequent but also potentially disabling for them. Detecting and preventing these falls have an important impact in the life of the elderly people.
Baloian, Nelson   +5 more
core   +1 more source

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

open access: yesComputer 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   +3 more
wiley   +1 more source

VALORACIÓN DE PROGRAMAS DE IMPLEMENTACIÓN DE GENERACIÓN DISTRIBUIDA EN SISTEMAS DE POTENCIA CONSIDERANDO PERFIL DE TENSIONES Y SEGURIDAD

open access: yesRevista Politécnica, 2019
En este artículo se presenta una metodología para valorar programas de implementación de generación distribuida (GD) en sistemas de potencia. La valoración de los programas se hace a través de diferentes índices que consideran la cargabilidad y el perfil
Carlos Andrés Tamayo   +2 more
doaj   +1 more source

uRT51: An Embedded Real-Time processor implemented on FPGA devices [PDF]

open access: yes, 2007
In this paper we describe and evaluate the main features of the uRT51 processor. The uRT51 processor was designed for embedded realtime control applications. It is a processor architecture that incorporates the specific functions of a real-time system in
Alimenti, O.   +3 more
core  

Skeleton‐Based Posture Recognition for Home Care From Virtual Unmanned Aerial Vehicle

open access: yesExpert Systems, Volume 42, Issue 9, September 2025.
ABSTRACT This article presents a novel approach for real‐time posture recognition in monitoring scenarios, utilising a virtual camera simulated on a UAV within virtual environments. Leveraging the MediaPipe Pose library, key points of the body skeleton are extracted, focusing on a subset of 8 key points for computational efficiency.
Andrés Bustamante   +4 more
wiley   +1 more source

Ingeniería Eléctrica

open access: yesIngeniería e Investigación, 2002
Se presenta el índice de temas publicados en la Revista Ingeniería e Investigación en el área de Ingeniería eléctrica hasta el año 2002.
Revista Ingeniería e Investigación
doaj  

Desempeño de inversores multinivel para energías renovables, una alternativa a la generación distribuida en México

open access: yesRevista Científica de Ingeniería Energética, 2023
En la actualidad el empleo de sistemas de generación eléctrica a través de fuentes alternas de energía incrementa continuamente, debido al aumento de la demanda energética, reduciendo las emisiones de CO2.
Francisco Eneldo López Monteagudo   +5 more
doaj  

Enhancing Stability of Microwave‐Synthesized Cs2SnxTi1‐xBr6 Perovskite by Cation Mixing

open access: yesChemSusChem, Volume 18, Issue 9, May 5, 2025.
This research introduces a microwave radiation synthesis technique for synthesizing Cs2SnxTi1‐xBr6 lead‐free double perovskite powders. By incorporating Sn4+ cations, the stability of the material is improved, particularly at elevated temperatures and outside conditions.
Emmanuel Reyes‐Francis   +9 more
wiley   +1 more source

30 años de realizaciones

open access: yesIngeniería e Investigación, 1992
A continuación se hace una breve descripción del desarrollo que ha tenido, tanto el Departamento de Ingeniería Eléctrica como la Carrera de Ingeniería Eléctrica en la Universidad Nacional - Sede Bogotá - desde sus orígenes hasta la fecha, señalando en ...
Luis Alberto Olarte
doaj  

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