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Mostrando ítems 11-20 de 1933
The Nature of Charge-Transfer Excited States in Transition Metal Complexes Pertinent to Energy Conversion and Chemical Sensing
(Asociación Argentina para el Progreso de las Ciencias, 2020-03)
We present procedures for determining the nature of charge-transfer excited states in transition metal complexes relevant to energy conversion and chemical sensing processes. In particular, we analyze the importance of ...
A WTS Power Conversion Stage With Multilevel Converters Operating in the Medium Voltage Range
(Pergamon-Elsevier Science Ltd, 2012-07)
A high power medium voltage converter for wind turbine system is presented in this paper. The proposal mitigates classic design tradeoffs around low voltage, high current link between the generator and the utility grid on ...
Thermal neutron detector based on COTS CMOS imagers and a conversion layer containing Gadolinium
(Elsevier Science, 2018-06)
In this work we will introduce a novel low cost position sensitive thermal neutron detection technique, based on a Commercial Off The Shelf CMOS image sensor covered with a Gadolinium containing conversion layer. The ...
Selectivity in UV photocatalytic CO2 conversion over bare and silver-decorated niobium-tantalum perovskites
(Elsevier Science, 2021-02-01)
The hydrothermal synthesis of the perovskites NaNbO3, NaTaO3 and the intermediate composition NaNb0.5Ta0.5O3, as CO2 conversion photocatalysts is reported. Among them, the niobate shows the most promising performance under ...
Variable-speed wind energy conversion system based on a dual stator-winding induction generator
(Institution of Engineering and Technology, 2017-01)
This study presents a wind energy conversion system based on a dual stator-winding induction generator. The generator can work at variable wind speed and can also be connected to the grid. The proposed energy conversion ...
Soil quality assessment based on soil organic matter pools under long‐term tillage systems and following tillage conversion in a semi‐humid region
(Wiley Blackwell Publishing, Inc, 2020-01-06)
A field study was conducted to assess the long-term effects of no-tillage (NT) and conventional tillage (CT), and the short-term effects following tillage conversion -from CT to NT (NTn) and from NT to CT (CTn) on soil ...
Apoyando al neo-desarrollismo: intenciones de conversión de dinero en capital humanoSupporting Neo-developmentalism: aims of converting of money into human capital
(Universidad Complutense de Madrid, 2016-01)
En este trabajo, reconstruyo los contextos históricos en los que se implementaran el programa de transferencias monetarias condicionadas denominado sucesivamente Progresa-Oportunidades-Prospera. Infiero hipótesis sobre sus ...
Corrosion Performance of Conversion Treatments for Electrogalvanised Steel Sheet
(Scientific Research Publishing, 2019-09)
Chromate conversion treatments have been widely used due to their excellent corrosion resistance properties; however, their use is increasingly restricted because of the highly toxic chromic acid solutions required, with ...
2-Sliding active and reactive power control of a wind energy conversion system
(Institution of Engineering and Technology, 2010-11)
This study presents the control of a variable-speed wind energy conversion system based on a brushless doubly fed reluctance machine. The control objectives are the tracking of the maximum power conversion point and the ...
Receding Horizon Adaptive Second-Order Sliding Mode Control for Doubly-Fed Induction Generator Based Wind Turbine
(Institute of Electrical and Electronics Engineers, 2017-01)
In this paper, a novel adaptive second-order sliding mode technique to optimize the efficiency of certain types of variable-speed wind turbines is developed and analyzed. A revisited form of a recent adaptation algorithm ...