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Asymmetrical Multilevel Inverter for Traction Drives Using Only One DC Supply
(2010)
The main advantage of asymmetrical multilevel inverters is the optimization of levels with a minimum number of power supplies. However, this optimized multilevel system still needs a large number of isolated and floating ...
Nanoestructured bridged silsesquioxanes via sol-gel synthesis
(Academia Nacional de Ciencias Exactas, Físicas y Naturales, 2008-12)
Two types of hybrid materials with different degree of nanoestructuring (a bridged silsesquioxane (BS) and hybrid microspheres (MS)) were obtained from a bridged precursor (P) synthesized by the reaction of glycidoxyprop ...
Análise comparativa de inversores multiníveis com células H-bridge conectadas em série
(Universidade Federal de Santa MariaBREngenharia ElétricaUFSMPrograma de Pós-Graduação em Engenharia Elétrica, 2006-04-20)
This Master Thesis presents a methodology to compare different topologies and configurations of multilevel systems applied to drive medium voltage induction motors. Initially, it presents the input and output parameters ...
Field performance of three-way cross yellow and white maize hybrids in Nepal
(Asian Journal of Advances in Agricultural Research, 2022)
Toughening of wood particle composites-effects of sisal fibers
(John Wiley & Sons Inc, 2006-08)
Sisal fibers were added to wood particle composites to enhance their toughness. The selected matrix was a commercial styrene diluted unsaturated polyester thermoset resin. Fracture tests were carried out using single-edge ...
Fracture and resistance-curve behavior in hybrid natural fiber and polypropylene fiber reinforced composites
(SPRINGERNEW YORK, 2012)
This article presents the results of a combined experimental and theoretical study of fracture and resistance-curve behavior of hybrid natural fiber- and synthetic polymer fiber-reinforced composites that are being developed ...
Análisis de vigas híbridas para reducir los aceros convencionales en puentes vehiculares con luces de 50m de Ayacucho
(Universidad Peruana de Ciencias Aplicadas (UPC)PE, 2020-08-05)
En la presente tesis se realizó un análisis de vigas híbridas en puentes vehiculares con luces de 50m de Ayacucho, considerando el diseño alternativo en la superestructura de sección compuesta con vigas homogéneas de aceros ...
EXAFS, SAXS and Eu3+ luminescence spectroscopy of sol-gel derived siloxane-polyethyleneoxide hybrids
(Kluwer Academic Publ, 2000-12-01)
Hybrid Eu3+-doped silica-poliethyleneoxide (PEO) nanocomposites with covalent bonds between the inorganic (siloxane) and organic (PEO) phases have been obtained by sol-gel process. These materials are transparent, flexible ...
Eu(III) local coordination in white light emitters organic-inorganic hybrids.
(Soc Brasileira Quimica, 2001-07-01)
Eu3+ luminescence and EXAFS (Extended X-ray Absorption Fine Structure) results are presented for organic-inorganic hybrid gel hosts composed of a siliceous network to which small chains of oxyethylene units are covalently ...