Results 41 to 50 of about 1,925 (117)
Graphene Oxide as an Auxiliary UV Photoprotector for Polypropylene
Polymer 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
Search Space Calculation to Improve Parameter Estimation of Excitation Control Systems
TecnoLógicas, 2013 A method to calculate the search space for each parameter in an excitation control system is presented in this paper. The calculated search space is intended to reduce the number of parameter solution sets that can be found by an estimation algorithm ...
Andrés J. Saavedra-Montes +2 more
doaj
BÚSQUEDA SEMI-EXHAUSTIVA DE TOPOLOGÍAS EN SISTEMAS DE POTENCIA PARA MEJORAR CONDICIONES DE SEGURIDAD
Revista Politécnica, 2019 En este artículo se presenta un algoritmo orientado a mejorar las condiciones de seguridad de los sistemas de potencia. El algoritmo propuesto realiza una búsqueda semi-exhaustiva de posibles configuraciones de subestaciones con el objetivo de minimizar ...
Carlos Manuel Quintero Castrillón +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 +3 more
wiley +1 more source
Recommendations to Select Indices for Model Validation
TecnoLógicas, 2013 A set of recommendations to select error indices to model validation is presented in this paper. The recommendations are based on the comparison of indices used to validate dynamic systems.
Juan R. Camarillo-Peñaranda +2 more
doaj
Journal of Modern Power Systems and Clean Energy, 2017 The growing installation of natural gas fired power plants has increased the integration of natural gas and electricity sectors. This has driven the need investigate the interactions among them and to optimize energy resources management from a ...
Diego Mauricio OJEDA-ESTEYBAR +2 more
doaj +1 more source
Review of Development Economics, Volume 29, Issue 4, Page 2534-2549, November 2025.ABSTRACT Green aid aims to increase the capacity of countries to mitigate the impacts of climate change by improving energy efficiency and deploying green and renewable energy technologies in developing countries. While various donor and recipient country characteristics for the effectiveness of foreign aid have been examined, the role of donor ...
Mehmet Pinar
wiley +1 more source
Design of DC-DC Converter and its Control for a Wind Generation System Connected to an Isolated Load
TecnoLógicas, 2013 A method to design a Buck converter and its control, which are associated to a wind generation system that is feeding an isolated load, is presented in this paper. To design the converter a Thevenin equivalent is deduced, which represents the behavior of
Carlos A. Ramírez Gómez +2 more
doaj
Institutions, in time: Designing feedback pathways for shared infrastructure transitions
Policy Studies Journal, Volume 53, Issue 3, Page 654-680, August 2025.Abstract Electric utilities, challenged by a rapidly unfolding energy transition, use many informal institutions to bridge across technologies and sectors. Little is known, however, about how electric utility systems and other polycentric systems' institutions‐in‐use vary and evolve over time.
Matthew Grimley +6 more
wiley +1 more source
Review of European, Comparative &International Environmental Law, Volume 34, Issue 2, Page 471-484, July 2025.Abstract Regulatory and policy changes in the renewable energy sector in many European countries have disrupted investment stability in the sector. These changes have triggered legal disputes in which investors argued that host states have an obligation to maintain regulatory stability.
Sai Ma, Simon Schaub, Joan Enguer
wiley +1 more source