Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Rafael Carvalho Barreto"'
Autor:
Ricardo Rossasi Geraldo, Sergei Anatolyevich Paschuk, Rafael Carvalho Barreto, Janine Nicolosi Corrêa, Guilherme Soares Zahn, Paulo Sergio Cardoso da Silva, Amanda Claudia Malagi da Silva, Danielle Cristine Narloch, Isabelle Cabello Araujo
Publikováno v:
Brazilian Journal of Radiation Sciences, Vol 9, Iss 1A (2021)
Phosphogypsum is a residue that has been used by the cement industry as a substitute for the natural gypsum, used as a clinker additive during the production of Portland cement. There is a potential increase in this residue use since the large amount
Externí odkaz:
https://doaj.org/article/d52ed39cd22b4945be5704326bc49a9e
Autor:
Jean Filipe Kuhne, Nathalia de Campos Prediger, Bruno Bassi Millan Torres, Rafael Carvalho Barreto, Ricardo Canute Kamikawachi
Publikováno v:
Photonics, Vol 8, Iss 9, p 346 (2021)
In this paper, an induced birefringence was observed on an ammonia sensor based on an etched fiber Bragg grating (EFBG) coated with an organic film. The film was prepared with a solution of the perylene derivative, along with the copolymer PCDTBT in
Externí odkaz:
https://doaj.org/article/5984053ba6304edfa5be11343597ed5b
Autor:
Rafael Carvalho Barreto, Allan F. N. Perna, Danielle C. Narloch, Flavia Del Claro, Janine N. Correa, Sergei A. Paschuk
Publikováno v:
Brazilian Journal of Radiation Sciences, Vol 7, Iss 2A (2019)
It was developed an improved theoretical model capable to estimate the radium concentration in building materials solely measuring the radon-222 concentration in a confined atmosphere. This non-destructive technique is not limited by the size of the
Externí odkaz:
https://doaj.org/article/451376731dfa4eef817fad25879ed6d7
Autor:
Rafael Carvalho Barreto
Publikováno v:
Biblioteca Digital de Teses e Dissertações da USPUniversidade de São PauloUSP.
O estudo da polarização eletrostática em líquidos homogêneos é crucial para compreender as propriedades termodinâmicas e de solvatação. Estes efeitos de polarização são também importantes para estudar a dinâmica molecular de reações q
Autor:
Diego Fernandes, Rafael Eleodoro de Goes, Andre Luiz Tonso Fabiani, Rafael Carvalho Barreto, Ricardo Canute Kamikawachi
Publikováno v:
IEEE Sensors Journal. 22:16008-16015
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a5233326e75933424be67ad530d1e3ca
https://doi.org/10.1109/jsen.2022.3191443
https://doi.org/10.1109/jsen.2022.3191443
Autor:
Ricardo Canute Kamikawachi, Keli Fabiana Seidel, Rafael Carvalho Barreto, Gilber Gustavo de Almeida
Publikováno v:
IEEE Sensors Journal. 20:3608-3613
In this work, we propose a robust water level sensor based on a fiber Bragg grating (FBG). The sensor head is formed by a cylindrical PVC cap with 4 cm diameter. The cap was filled with silicone rubber in which two FBGs were inserted for temperature
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7183fb3bc9fdab42205102213b008e2c
https://doi.org/10.1109/jsen.2019.2960089
https://doi.org/10.1109/jsen.2019.2960089
Autor:
Andre Luiz Coelho Conceicao, Rafael Carvalho Barreto, Bruno Barros Cunha, Ricardo Canute Kamikawachi, Raquel de Paiva Corotti Jr
Publikováno v:
IEEE Sensors Journal. 20:1290-1296
Etched fiber Bragg grating (EFBG) was coated with diphenilalanine nanotubes (DNT) to produce sensors capable of detecting methanol in methanol-ethanol blend vapors. The DNT was studied in two phases, hexagonal and orthorhombic, which were observed by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6a62702330063e145cdde2878cf147c7
https://doi.org/10.1109/jsen.2019.2946123
https://doi.org/10.1109/jsen.2019.2946123
Autor:
Nathalia de Campos Prediger, Rafael Carvalho Barreto, Jean Filipe Kuhne, Ricardo Canute Kamikawachi, Bruno Bassi Millan Torres
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Photonics, Vol 8, Iss 346, p 346 (2021)
Universidade de São Paulo (USP)
instacron:USP
Photonics, Vol 8, Iss 346, p 346 (2021)
In this paper, an induced birefringence was observed on an ammonia sensor based on an etched fiber Bragg grating (EFBG) coated with an organic film. The film was prepared with a solution of the perylene derivative, along with the copolymer PCDTBT in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::89732748ee8a7dfba25dc8cbc1561b06
Publikováno v:
IEEE Sensors Journal. 18:8338-8344
In this paper, we explore an empirical model capable to describe the nonlinear temperature response of in-fiber Mach–Zehnder interferometers (MZI). This model describes the nonlinear and linear response ranges with the same accuracy. It shows how t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::52a927b38e2338767bd27c49d4f79de8
https://doi.org/10.1109/jsen.2018.2866397
https://doi.org/10.1109/jsen.2018.2866397
Autor:
Janine Nicolosi Corrêa, Flávia Del Claro, Rafael Carvalho Barreto, Allan Felipe Nunes Perna, Danielle Cristine Narloch, V. Denyak, Sergei Anatolyevich Paschuk
Publikováno v:
Nukleonika, Vol 63, Iss 3, Pp 65-72 (2018)
The main sources of radon in the air of dwellings are soil, building materials, and groundwater. This study aimed to determine the exhalation rate of 222Rn from samples made of concrete and cement mortars, as well as to evaluate by means of gamma spe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::432a3943ab63f929ce36d2bd04cc9b4f
https://doaj.org/article/4b3601c36ed845cbafe0ba6e04f6e7ef
https://doaj.org/article/4b3601c36ed845cbafe0ba6e04f6e7ef