Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Eustáquio V. R. de Castro"'
Autor:
André F. Constantino, Valdemar Lacerda Jr., Reginaldo B. dos Santos, Sandro J. Greco, Renzo C. Silva, Álvaro C. Neto, Lúcio L. Barbosa, Eustáquio V. R. de Castro, Jair C. C. Freitas
Publikováno v:
Química Nova, Vol 37, Iss 1, Pp 10-17 (2014)
To choose among the variety of oleaginous plants for biodiesel production, the oil content of several matrices was determined through different low-field ¹H nuclear magnetic resonance (NMR) experiments with varied pulse sequences, namely single-puls
Externí odkaz:
https://doaj.org/article/189badbcee0c4456b9da6d12d05decff
Publikováno v:
Polímeros, Vol 23, Iss 3, Pp 425-431 (2013)
Neste trabalho foi desenvolvida uma nova metodologia de reciclagem química do poli(tereftalato de etileno) grau garrafa pós-consumo, PETpc, através da reação de despolimerização em meio alcalino (solução de hidróxido de sódio, NaOH, de 7,5
Externí odkaz:
https://doaj.org/article/a6ecf77d2a7646609f51fd859cb6ac80
Autor:
Eloilson Domingos, Thieres M. C. Pereira, Eustáquio V. R. de Castro, Wanderson Romão, Geovane L. de Sena, Regina C. L. Guimarães
Publikováno v:
Polímeros, Vol 23, Iss 1, Pp 37-41 (2013)
O potencial da técnica de espectroscopia de infravermelho com transformada de Fourier e acessório de reflexão total atenuada (FTIR-ATR) foi avaliado para o monitoramento da degradação da poliamida 11 (PA-11) usada em dutos flexíveis. As amostra
Externí odkaz:
https://doaj.org/article/140a7ee1f08e4ed6ac1a66096f3a328e
Autor:
Gustavo G. Shimamoto, Bianca Kazitoris, Luis F. R. de Lima, Nathassia D. de Abreu, Vitor T. Salvador, Maria Izabel M. S. Bueno, Eustáquio V. R. de Castro, Elói A. S. Filho, Wanderson Romão
Publikováno v:
Química Nova, Vol 34, Iss 8, Pp 1389-1393 (2011)
Antimony is a common catalyst in the synthesis of polyethylene terephthalate used for food-grade bottles manufacturing. However, antimony residues in final products are transferred to juices, soft drinks or water. The literature reports mentions of t
Externí odkaz:
https://doaj.org/article/ac559d0e60f94e88b49ee5e11760cd03
Publikováno v:
Anais da Academia Brasileira de Ciências, Vol 73, Iss 4, Pp 511-517 (2001)
The generator coordinate Hartree-Fock method is used to generate adapted Gaussian basis sets for the atoms from Li (Z=3) through Xe (Z=54). In this method the Griffin-Hill-Wheeler-Hartree-Fock equations are integrated through the integral discretizat
Externí odkaz:
https://doaj.org/article/c1fc71d6a862418cb028d23ef80f95ea
Autor:
Eloilson Domingos, Thieres M. C. Pereira, Eustáquio V. R. de Castro, wanderson Romão, Geovane L. de Sena, Regina C. L. Guimarães
Publikováno v:
Polímeros, Iss ahead, p 0 (2012)
O potencial da técnica de espectroscopia de infravermelho com transformada de Fourier e acessório de reflexão total atenuada (FTIR-ATR) foi avaliado para o monitoramento da degradação da poliamida 11 (PA-11) usada em dutos flexíveis. As amostra
Externí odkaz:
https://doaj.org/article/87546f273be14cfcb1cf6bed828c2fb9
Autor:
Márcia H. C. Nascimento, Wena D. Marcarini, Gabriely S. Folli, Walter G. da Silva Filho, Leonardo L. Barbosa, Ellisson Henrique de Paulo, Paula F. Vassallo, José G. Mill, Valério G. Barauna, Francis L. Martin, Eustáquio V. R. de Castro, Wanderson Romão, Paulo R. Filgueiras
Publikováno v:
Analytical Chemistry
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has caused the worst global health crisis in living memory. The reverse transcription polymerase chain reaction (RT-qPCR) is considered the gold standard diagnostic method, but it exhibits
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eb58acffcd0435788d8869b640bf457c
https://doi.org/10.1021/acs.analchem.1c04162
https://doi.org/10.1021/acs.analchem.1c04162
Autor:
Renzo C, Silva, Giovanna F, Carneiro, Lúcio L, Barbosa, Valdemar, Lacerda, Jair C C, Freitas, Eustáquio V R, de Castro
Publikováno v:
Magnetic resonance in chemistry : MRC. 50(2)
Low-field (1) H NMR was used in this work for the analysis of mixtures involving crude oils and water. CPMG experiments were performed to determine the transverse relaxation time (T2 ) distribution curves, which were computed by the inverse Laplace t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::1e4fc3f284010869376ad2e3d06d5bca
https://pubmed.ncbi.nlm.nih.gov/22337691
https://pubmed.ncbi.nlm.nih.gov/22337691
Autor:
Roberta C, Salles, Valdemar, Lacerda, Adilson, Beatriz, Felicia M, Ito, Reginaldo B, dos Santos, Sandro J, Greco, Eustáquio V R, de Castro, Dênis P, de Lima
Publikováno v:
Magnetic resonance in chemistry : MRC. 48(5)
Bioactive cage-like polycyclic compounds have attracted the attention of several research groups because of their unique appearance and their biological activities. Their structures were established on the basis of (1)H NMR and (13)C NMR spectroscopi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::438f29470232e597968fc1e2caf451a9
https://pubmed.ncbi.nlm.nih.gov/20301093
https://pubmed.ncbi.nlm.nih.gov/20301093