Results 121 to 130 of about 8,310 (238)
Removing Oxide Layers and Retaining Oxide‐Free Steel Surfaces by Polishing in Oxygen‐Free Atmosphere
Advanced Engineering Materials, EarlyView.In this study, the efficacy of wet mechanical polishing under an oxygen‐free atmosphere for deoxidation and the retention of an oxide‐free steel surface are elucidated using X‐ray photoelectron spectroscopy. The methodology proved successful; however, the results were highly dependent on the preparation of the solvents used to clean the samples after ...
Friedrich Bürger +2 more
wiley +1 more source
Projeto de Conversor CC-CC Isolado Ressonante Alimentado em Corrente [PDF]
, 2018 TCC (graduação) - Universidade Federal de Santa Catarina. Centro Tecnológico. Engenharia Elétrica.Este trabalho é referente a realização de um protótipo de um Conversor CC-CC Isolado Ressonante alimentado em corrente. O qual inclui uma explicação teórica
Contin, Marcelo Pietro Grützmacher
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A Topology Optimization Framework for the Inverse Design of Nonlinear Mechanical Metamaterials
Advanced Engineering Materials, EarlyView.This work uses topology optimization to design unit cells for mechanical metamaterials with a prescribed nonlinear stress–strain response. The framework adds contact and postbuckling modeling to synthesize microstructures for three highly nonlinear responses, including pseudoductile behavior, monostable with snap‐through buckling, and bistable ...
Charlie Aveline +2 more
wiley +1 more source
Advanced Functional Materials, EarlyView.A buried‐junction DSPEC design is introduced that leverages cascade charge transfer to enhance efficiency, stability, and versatility. This approach facilitates effective charge transfer and minimizes recombination losses, leading to significant improvements.
Jun‐Hyeok Park +8 more
wiley +1 more source
STMXT : sistema de transmissió de missatges a una xarxa de televisions [PDF]
, 2006 El projecte desenvolupat té per finalitat l'enviament de missatges de text des d'un ordinador fins a una pantalla de televisió mitjançant una transmissió sense fils, juntament amb la monitorització de la temperatura de l'espai on està instal·lat el ...
Aragonés Ortiz, Raúl +3 more
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Advanced Functional Materials, EarlyView.The study presents biodegradable and recyclable mixed‐matrix membranes (MMMs), hydrogels, and cryogels using luminescent nanoscale metal‐organic frameworks (nMOFs) and biopolymers. These bio‐nMOF‐MMMs combine europium‐based nMOFs as probes for the status of the materials with the biopolymers agar and gelatine and present alternatives to conventional ...
Moritz Maxeiner +4 more
wiley +1 more source
Uma fonte chaveada de fator de potência na forma de fonte simétrica.
Revista Tecnologia, 2009 Este trabalho propõe a concepção de uma fonte chaveada com correção de fator de potência, obtida através de uma integração de soluções, ou seja, a associação de um conversor ca/cc e dois conversores cc/cc.
Fernando Lessa Tofoli +1 more
doaj
Grampeamento ativo para estágios retificadores de saída de conversores CC-CC isolados [PDF]
, 2003 Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Elétrica.Este trabalho apresenta o estudo e a implementação prática de um circuito de grampeamento ativo empregando o conversor ...
Font, Carlos Henrique Illa
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CONTROLADORES ROBUSTO APLICADO A CONVERSORES CC-CC [PDF]
, 2019 Luiz Otávio Limurci dos Santos +1 more
openaire +1 more source
Advanced Functional Materials, EarlyView.A combinatorial library of dual‐functional antiviral oligomers incorporating N‐halamine and quaternary ammonium functionalities is developed for long‐lasting antiviral activity. The lead materials exhibit rapid and durable antiviral activity against SARS‐CoV‐2 variants and influenza H1N1, with 4 to 5 log reduction in viral copies at 5 mg mL−1 ...
Eid Nassar‐Marjiya +14 more
wiley +1 more source