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3 results on '"Michelle P. Borges"'

1. POA turismo acessível: comunicação aumentativa e alternativa em materiais e sítios turísticos

Author

EDUARDO CARDOSO, ALESSANDRA LOPES DE OLIVEIRA CASTELINI, RITA BERSCH, DAIANNE SERAFIM MARTINS, MICHELLE APELLANIS BORGES, and RENATA BONOTTO

Subjects
acessibilidade. turismo. comunicação aumentativa e alternativa., Social sciences (General), H1-99
Abstract

Este artigo socializa ações do projeto de pesquisa e extensão intitulado POA Turismo Acessível, em parceria com a Universidade Federal do Rio Grande do Sul – UFRGS, Assistiva – Tecnologia e Educação, ISAAC Brasil e a Diretoria de Acessibilidade e Inclusão Social e Diretoria de Turismo de Porto Alegre, com objetivo de desenvolver projetos com emprego de Comunicação Aumentativa e Alternativa - CAA em materiais e em locais turísticos da cidade. A pesquisa qualitativa, com referencial metodológico no estudo de caso, apresenta aportes legais que respaldam a comunicação acessível, referenciais da CAA e do turismo acessível. Discutem-se premissas do Projeto e descrição do material gráfico produzido com implementação das ações em parques infantis de praças públicas da cidade. Os resultados revelaram abrangência do estudo, com evidências das ações desenvolvidas, apontando alternativas para elaboração e disseminação de placas com estratégias de CAA, ampliando discussões em prol do turismo mais acessível no Brasil. Palavras-chave: Acessibilidade. Turismo. Comunicação Aumentativa e Alternativa. POA accessible tourism: augmentative and alternative communication in materials and tourist sites ABSTRACT This article shares the actions of the research and extension project entitled POA Turismo Acessível, in partnership with the Federal University of Rio Grande do Sul - UFRGS, Assistive - Technology e Educação, ISAAC Brazil and the Accessibility and Social Inclusion Directorate and the Tourism Directorate of Porto Alegre, with the objective of developing projects using Augmentative and Alternative Communication - CAA in materials and in tourist places in the city. Qualitative research, with a methodological framework in the case study, presents legal contributions that support accessible communication, CAA references and accessible tourism. Project premises and description of the graphic material produced with the implementation of actions in playgrounds in public squares in the city are discussed. The results revealed the scope of the study, with evidence of the actions developed, pointing out alternatives for the elaboration and dissemination of signs with CAA strategies, expanding discussions in favor of more accessible tourism in Brazil. Keywords: Accessibility. Tourism. Augmentative and Alternative Communication.

Published
2021
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2. Degradation of Dipyrone by the Electro-Fenton Process in an Electrochemical Flow Reactor with a Modified Gas Diffusion Electrode

Author

Marcos R.V. Lanza, Michelle P. Borges, Rafael M. Reis, Robson S. Rocha, Willyam R.P. Barros, and Rodnei Bertazzoli

Subjects
Electrolysis, Gas diffusion electrode, Chemistry, gas diffuson electrode, Inorganic chemistry, chemistry.chemical_element, General Chemistry, Electrochemistry, Fenton process, law.invention, chemistry.chemical_compound, electrochemical reactor, law, Yield (chemistry), Phthalocyanine, Degradation (geology), dipyrone, Hydrogen peroxide, Cobalt
Abstract

The increasing occurrence of antibiotics and their metabolites in surface and ground waters is causing a significant impact on the environment and needing of developing novel treatments for the complete removal of such contaminants. This paper presents the study of the electrogeneration of hydrogen peroxide (H2O2) in acidic medium and the degradation of the analgesic dipyrone in an electrochemical flow reactor using a gas diffusion electrode (GDE) modified with 5.0% cobalt (II) phthalocyanine (CoPc) and pressurized with O2. The highest yield of H2O2 (133 mg L-1) was achieved after 90 min of electrolysis at an applied potential of -2.1 V (vs. Pt//Ag/AgCl/KCl s) and the best results for degradation of dipyrone were obtained under electro-Fenton conditions, where the total organic carbon (TOC) was reduced 62.8% after 90 min of reaction and 49.1 kW h of energy was consumed per kg of dipyrone degraded. A crescente ocorrência de antibióticos e seus metabólitos estão cada vez maiores em águas superficiais e subterrâneas, causando impactos significativos no meio ambiente e necessitando de desenvolvimento de novos tratamentos para a remoção completa de tais contaminantes. Este trabalho apresenta o estudo da eletrogeração de peróxido de hidrogênio (H2O2) em meio ácido e a degradação do analgésico dipirona em um reator de fluxo eletroquímico usando um eletrodo de difusão gasosa (GDE) modificado com 5,0% ftalocianina de cobalto (II) (CoPc) e pressurizado com O2. A maior produção de H2O2 alcançada foi de 133 mg L-1 a um potencial aplicado de -2,1 V (vs. Pt//Ag/AgCl/KCl s) e os melhores resultados para a degradação da dipirona foram obtidos sob condições eletro-Fenton, em que o carbono orgânico total (TOC) foi reduzido 62,8% após 90 min de reação e 49,1 kW h de energia foi consumida por kg de dipirona degradada.

Published
2014

3. Degradation of dipyrone by electrogenerated H2O2 combined with Fe2+ using a modified gas difufusion electrode

Author

Juliane C. Forti, Willyam R.P. Barros, Michelle P. Borges, Marcos R.V. Lanza, Juliana R. Steter, and Robson S. Rocha

Subjects
Electrolysis, Gas diffusion electrode, Renewable Energy, Sustainability and the Environment, Chemistry, chemistry.chemical_element, Electrolyte, Condensed Matter Physics, Electrochemistry, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, law.invention, Electrochemical cell, Absorbance, chemistry.chemical_compound, law, COMPOSTOS ORGÂNICOS, Materials Chemistry, Phthalocyanine, Cobalt, Nuclear chemistry
Abstract

The aim of the present study was to investigate the electrochemical degradation of dipyrone in a single compartment electrochemical cell equipped with a gas diffusion electrode (GDE) modified with cobalt (II) phthalocyanine. Degradations were performed under conditions of anodic oxidation (GDE pressurized with N2) and under conditions promoting the electrogeneration of H2O2 (GDE pressurized with O2) both in the absence and presence of 1 mmol FeSO4.7H2O (electro-Fenton conditions). The efficiency of the electro-Fenton process was satisfactory at all studied potentials, and achieved a maximum reduction of 67% in electrolyte absorbance at 262 nm after 90 min electrolysis at −0.7 V (vs. Ag/AgCl). The reduction in dipyrone concentration attained 95% after 90 min of reaction with electrogenerated H2O2 in the absence or presence of Fe2+ ions at all potentials except −0.5 V (vs. Ag/AgCl). The removal of total organic carbon (TOC) was most efficient under electro-Fenton conditions with a decrease of 54.4% in organic load attained at -0.9 V (vs. Ag/AgCl) and energy consumption (EC) of 270 kWh per kg of TOC removed. © 2014 The Electrochemical Society. [DOI: 10.1149/2.0091414jes] All rights reserved.

Published
2014

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