Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Dulce Maria de Araujo Melo"'
Autor:
Renata Martins Braga, Najara Maira Teodoro, Dulce Maria de Araujo Melo, Flávia de Medeiros Aquino, Joana Maria de Farias Barros, Julio Cezar de Oliveira Freitas
Publikováno v:
Holos, Vol 5, Iss 0, Pp 40-49 (2013)
As peneiras moleculares MCM-41 têm atraído grande interesse devido as suas propriedades de alta área específica, volume e diâmetro de poros controláveis. Estes materiais são aplicados em diversos ramos da indústria química como adsorventes,
Externí odkaz:
https://doaj.org/article/919136796c9b47baa2ac9cc1c2af601f
Autor:
Marcela Cristina Pereira dos Santos Almeida, Janduir Egito da Silva, Willame Gomes da Silva Batista, José Luiz Francisco Alves, Dulce Maria de Araújo Melo, Alexandre Santos Pimenta, Renata Martins Braga
Publikováno v:
Forests, Vol 15, Iss 4, p 621 (2024)
In the past few years, wind power has become a viable alternative in Brazil to diversify the energy mix and mitigate pollutant emissions from fossil fuels. Significant wind energy generation potential is inherent in the Brazilian Northeast state of R
Externí odkaz:
https://doaj.org/article/3ea9edd5ff2942b7a4b50f3ebdfaa58d
Autor:
Victor Teixeira da Silva Aragão, Vanessa Santana Silva, Rafael Rabelo de Carvalho, Robert S. Matos, Nilson S. Ferreira, Dulce Maria de Araújo Melo, Rosane Maria Pessoa Betânio Oliveira
Publikováno v:
Journal of Materials Research and Technology, Vol 15, Iss , Pp 2711-2724 (2021)
Alumina–titania (Al2O3/TiO2) composites are well-known for their physical and microstructural properties, which allow several engineering applications. However, these properties change when different sintering temperatures are used, due to the exis
Externí odkaz:
https://doaj.org/article/ea8dec973eba4409900e4182e5617ec0
Autor:
Janduir Egito da Silva, Guilherme Quintela Calixto, Rodolfo Luiz Bezerra de Araújo Medeiros, Marcus Antônio de Freitas Melo, Dulce Maria de Araújo Melo, Luiz Paulo de Carvalho, Renata Martins Braga
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
Abstract This study aims to analyze the products of the catalytic pyrolysis of naturally colored cotton residues, type BRS (seeds from Brazil), called BRS-Verde, BRS-Rubi, BRS-Topázio and BRS-Jade. The energy characterization of biomass was evaluate
Externí odkaz:
https://doaj.org/article/dd1bf902f08c4dc3b6be5d5135880162
Microwave Assisted Hydrothermal Synthesis of NiO-Ce1-XEuxO2-y powders for Fuel Cell Catalytic Anodes
Autor:
Amanda Lucena de Medeiros, Antonio Eduardo Martinelli, Dulce Maria de Araujo Melo, Marcelo Ornaghi Orlandi, Daniel Araujo Macedo
Publikováno v:
ECS Meeting Abstracts. :1674-1674
CeO2-doped with rare earth ions (RE+3) can be used as an alternative material to traditional YSZ anodes, due to higher activities and lower ohmic losses in intermediate-temperature SOFCs (500-800°C). The present study reports the synthesis of NiO-Ce
Autor:
Luiz Augusto da Silva Correia, Janduir Egito da Silva, Guilherme Quintela Calixto, Dulce Maria de Araújo Melo, Renata Martins Braga
Publikováno v:
Ciência Rural, Vol 52, Iss 2 (2021)
ABSTRACT: This research valorized Pachira aquatica Aubl.’s fruit shells (PAS) through its energetic characterization and flash pyrolysis for biofuels or chemicals production. The characterization was performed through proximate and ultimate analysi
Externí odkaz:
https://doaj.org/article/be945e01c78a4c36b12282b360cbafed
Autor:
Lúcio César Dantas de Medeiros, Alexandre Santos Pimenta, Renata Martins Braga, Tatiane Kelly de Azevedo Carnaval, Pedro Nico Medeiros Neto, Dulce Maria de Araújo Melo
Publikováno v:
Revista Árvore, Vol 43, Iss 4 (2020)
ABSTRACT Among the parameters used in the biomass carbonization process, the heating rate is one of the most important. The objective of the present work was to assess the influence of different heating rates on the chemical composition of wood vineg
Externí odkaz:
https://doaj.org/article/c3df352a102b4544bfe7a84f48634fbd
Modulator Effect of Acetic Acid on the Morphology of Luminescent Mixed Lanthanide-Organic Frameworks
Autor:
Ana Karina Pereira Leite, Bráulio Silva Barros, Joanna Kulesza, Jarley Fagner Silva do Nascimento, Dulce Maria de Araújo Melo, Angelo Anderson Silva de Oliveira
Publikováno v:
Materials Research, Vol 20, Iss suppl 2, Pp 681-687 (2017)
The control of the size and morphology of Metal-Organic Frameworks is a challenge that must be overcome to ensure the use of these materials in advanced applications. Mixed Lanthanide-Organic Frameworks (MLOFs) were synthesized via solvo(hydro)therma
Externí odkaz:
https://doaj.org/article/07e63ad6c0c347938e7252687ac0dfe0
Autor:
Gilvan Pereira de Figueredo, Alexandre Fontes Melo de Carvalho, Rodolfo Luiz Bezerra de Araújo Medeiros, Francisco Marcelo Silva, Heloísa Pimenta de Macêdo, Marcus Antônio de Freitas Melo, Dulce Maria de Araújo Melo
Publikováno v:
Materials Research, Vol 20, Iss suppl 2, Pp 254-259 (2017)
Magnesium aluminate can be obtained by the methods: ceramic method, sol-gel, co-precipitation, hydrothermal and combustion. However, this work presents a simple and low cost route to obtain MgAl2O4 through the gelatin method. The main objective was t
Externí odkaz:
https://doaj.org/article/b11fbd4132aa4b79ac193439fa8e43bf
Autor:
Heloísa Pimenta de Macedo, Rodolfo Luíz Bezerra de Araújo Medeiros, Amanda Lucena de Medeiros, Ângelo Anderson Silva de Oliveira, Gilvan Pereira de Figueredo, Marcus Antônio de Freitas Melo, Dulce Maria de Araújo Melo
Publikováno v:
Materials Research, Vol 20, Iss suppl 2, Pp 29-33 (2017)
In this work, zinc aluminate spinel was prepared by two methods of directly synthesis (without calcination): microwave assisted combustion and hydrothermal method. The materials were characterized by X-ray diffraction (XRD), scanning electron microsc
Externí odkaz:
https://doaj.org/article/cb299e8f57dc4a3488b1c6ebaa156c87