Listar DIE-Artículos, capítulos... por título
Mostrando ítems 51-70 de 90
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Low Electron Temperature Plasma Diagnosis: Revisiting Langmuir Electrostatic Probes
(MDPI, 2021)This article describes a method of measurement of the current-to-probe voltage characteristic curve of a Langmuir electrostatic probe immersed in a plasma characterized by a low electron temperature that is only one order ... -
Methodological Advances in the Design of Photovoltaic Irrigation
(MDPI, 2021)In this study, an algorithm has been developed that manages photovoltaic solar energy in such a manner that all generated power is delivered to the system formed by a pump and irrigation network with compensated emitters. ... -
Middleware to Operate Smart Photovoltaic Irrigation Systems in Real Time
(MDPI, 2019)Climate change, water scarcity and higher energy requirements and electric tariff compromises the continuity of the irrigated agriculture. Precision agriculture (PA) or renewable energy sources which are based on communication ... -
Modeling and optimization of acetic acid fermentation: A polynomial-based approach
(Elsevier, 2015)Vinegar production is a typical bioprocess in the scope of the agrifood industry. Its optimization requirescareful modeling which has so far been addressed by using mainly unstructured first principles models. Because of ... -
Modelling of the Acetification Stage in the Production of Wine Vinegar by Use of Two Serial Bioreactors
(MDPI, 2020)In the scope of a broader study about modelling wine acetification, the use of polynomial black-box models seems to be the best choice. Additionally, the use of two serially arranged bioreactors was expected to result in ... -
Modelling of wine vinegar acetification bioreactor: Global sensitivity analysis and simplification of the model
(Elsevier, 2022)First-principles models of any process usually describe its complex underlying mechanisms using differential and algebraic equations including several unknown parameters, whose values must be normally estimated from ... -
Multi-objective optimization for simultaneously designing active control of tower vibrations and power control in wind turbines
(Elsevier, 2023)For wind turbines operating in the full load region, stabilizing the generated power at its nominal value is a key objective. Furthermore, the control of tower vibrations is a major constraint in wind turbine structures ... -
Multifractal detrended fluctuation analysis of sheep livestock prices in origin
(Elsevier, 2013)The multifractal detrended fluctuation analysis (MF-DFA) is used to verify whether or not the returns of time series of prices paid to farmers in original markets can be described by the multifractal approach. By way of ... -
Multivariable PID control by decoupling
(2016)This paper presents a new methodology to design multivariable PID controllers based on decoupling control. The method is presented for general n×n processes. In the design procedure, an ideal decoupling control with integral ... -
New Omnidirectional Sensor Based on Open-Source Software and Hardware for Tracking and Backtracking of Dual-Axis Solar Trackers in Photovoltaic Plants
(MDPI, 2021)In this work, an omnidirectional sensor that enables identification of the direction of the celestial sphere with maximum solar irradiance is presented. The sensor, based on instantaneous measurements, functions as a ... -
Object oriented modelling and simulation of hydropower plants with run-of-river scheme: A new simulation tool
(2009)This paper presents the design of a component library for modelling hydropower plants, and describes the development of a new simulation tool for small hydropower plants with a run-of-river scheme. After reviewing the ... -
Oncogenic Role of Secreted Engrailed Homeobox 2 (EN2) in Prostate Cancer
(MDPI, 2019)Engrailed variant-2 (EN2) has been suggested as a potential diagnostic biomarker; however, its presence and functional role in prostate cancer (PCa) cells is still controversial or unknown. Here, we analyzed 1) the ... -
Optimal Active Generator Torque Control Strategies for Tower Lateral Load Reduction in the IEA 15 MW Wind Turbine
(EUROSIM, 2023)The extension of wind turbines' lifetime by reducing fatigue loads is a topic of interest. The contribution of this work is focused on designing a controller that mitigates lateral tower vibrations in the full load region. ... -
Optimal Operation Strategies into Deregulated Markets for 50 MWe Parabolic Trough Solar Thermal Power Plants with Thermal Storage
(MDPI, 2019)The evolution of electric generation systems, according to relevant legislation, allows for the parallel evolution of the installed power capacity of renewable resources with the development of technologies for renewable ... -
Optimization of 100 MWe Parabolic-Trough Solar-Thermal Power Plants Under Regulated and Deregulated Electricity Market Conditions
(MDPI, 2019)Parabolic-trough solar-thermal power-plant investments are subordinate to radiation availability, thermal-energy storage capacity, and dynamic behavior. Their integration into electricity markets is made by minimizing ... -
Optimization of biotechnological processes. The acetic acid fermentation. Part I: The proposed model
(Elsevier, 2009)Vinegar is a food product of increasing significance by virtue of its widely variable origin and uses (particularly as a condiment or food preservative). The gastronomic value of vinegar has been appreciated for thousands ... -
Optimization of biotechnological processes. The acetic acid fermentation. Part II: Practical identifiability analysis and parameter estimation
(Elsevier, 2009)In part I of this series a mathematical model for acetic acid fermentation was reported. However, no kinetic model can be complete until its equation parameters are estimated. This inevitably entails a practical identifiability ... -
Optimization of biotechnological processes. The acetic acid fermentation. Part III: Dynamic optimization
(Elsevier, 2009)Wine vinegar is obtained in a biotechnological process one of the crucial steps in which is the biological oxidation of the starting wine. Such a step is usually performed in a semi-continuous operation mode where a preset ... -
Optimization of the Acetification Stage in the Production of Wine Vinegar by Use of Two Serial Bioreactors
(MDPI, 2021)In the scope of a broader study about wine acetification, previous works concluded that using a single bioreactor hindered simultaneously reaching high productivities with high substrate consumption and the use of two ... -
Optimization with genetic algorithms of individual pitch control design with and without azimuth offset for wind turbines in the full load region
(Elsevier, 2023)The reduction of fatigue loadings in wind turbines to increase their lifetime has become of special interest from a control viewpoint. Individual Pitch Control (IPC) is a well-known approach used to mainly mitigate periodic ...