Zobrazeno 1 - 10
of 26
pro vyhledávání: '"P. M. Padilha"'
Autor:
F. A. Silva, I. L. de Alcântara, P. S. Roldan, C. C. F. Padilha, A. B. de Araújo, J. P. S. Valente, A. O. Florentino, P. M. Padilha
Publikováno v:
Eclética Química, Vol 30, Iss 3, Pp 47-55 (2018)
This paper discusses a rapid and sensitive method developed to determine trace levels of mercury in natural water samples by cold vapor atomic absorption spectrometry using a preconcentration system composed by mini-column packed with 100 mg of 2-ami
Externí odkaz:
https://doaj.org/article/93e5402d844747bf8a597f5b58a7d416
Autor:
F. V. de MORAES, I. L. de ALCÂNTARA, P. S. ROLDAN, G. R. de CASTRO, M. A. L. MARGIONTE, P. M. PADILHA
Publikováno v:
Eclética Química, Vol 28, Iss 1, Pp 9-17 (2018)
Este trabalho descreve a síntese e caracterização da sílica gel modificada com grupos 2-aminotiazol (SiAT), os resultados de um estudo de adsorção e de pré-concentração (em batelada, e em fluxo utilizando- se a técnica de coluna) de íons C
Externí odkaz:
https://doaj.org/article/47f6b4ad672143a5b19241c3c890eb69
Autor:
G. R. Castro, C. C. F. Padilha, J. C. Rocha, J. P. S. Valente, A. de O. Florentino, P. M. Padilha
Publikováno v:
Eclética Química, Vol 30, Iss 2, Pp 45-51 (2018)
The lability of Cd(II), Cr(III), Cu(II), Mn(II) and Pb(II) complexed by humic substances (HSs) was investigated by means of ion exchange on cellulose modified with p-aminobenzoic groups (Cell-PAB), using a batch procedure. The HSs were extracted from
Externí odkaz:
https://doaj.org/article/f07ced7059ff46f288c67561465e70e5
Publikováno v:
Eclética Química, Vol 30, Iss 4, p 7 (2018)
Este trabalho descreve um método de modificação do TiO 2 obtido pelo processo sol-gel, através da adição de óxido de cério no momento da síntese. O material foi caracterizado por adsorção de N 2 a 77K. A adição de CeO 2 aumenta a área e
Externí odkaz:
https://doaj.org/article/7b0fe7cf192e43f2b0a80e172aaa4fd8
Autor:
Marcio Costa, Gabriel R. Schleder, Carlos Mera Acosta, Antonio C. M. Padilha, Frank Cerasoli, Marco Buongiorno Nardelli, Adalberto Fazzio
Publikováno v:
npj Computational Materials, Vol 7, Iss 1, Pp 1-6 (2021)
Abstract The discovery and realization of topological insulators, a phase of matter which hosts metallic boundary states when the d-dimension insulating bulk is confined to (d − 1)-dimensions, led to several potential applications. Recently, it was
Externí odkaz:
https://doaj.org/article/7a84d9a32840431da8ec67dca2bc47ea
Autor:
Moara A.S.B. Borges, Larissa S. Saboya, Luiza A. Terra, Luciana B. Leite, Thais A.D. Braga, Rômulo P. Santos, Daniella M. Padilha, Natália C.R. Cunha, Ricardo V.T. Filho, Lisia G.M.M. Tomich
Publikováno v:
Brazilian Journal of Infectious Diseases, Vol 25, Iss , Pp 101120- (2021)
Externí odkaz:
https://doaj.org/article/9ecc5288d54b4b8fb03946bd16c3d3c6
Publikováno v:
Planta Daninha, Vol 34, Iss 4, Pp 721-728 (2016)
ABSTRACT The objective was to determine whether a change occurs in the critical period of weed interference prevention in narrow row corn with the use of atrazine and whether there is influence of the herbicide on crop yield components. The treatment
Externí odkaz:
https://doaj.org/article/e97beefa6ed74a488ded28787fce48d6
Autor:
Jomilson M. Santos, José P. S. Valente, Sônia Maria Alves Jorge, Pedro M. Padilha, Margarida J. Saeki, Gustavo R. Castro, Ariovaldo O. Florentino
Publikováno v:
Orbital: The Electronic Journal of Chemistry, Vol 5, Iss 4, Pp 233-241 (2014)
The coagulation-flocculation of TiO2 in aqueous suspensions of low and intermediate ionic strength was investigated as a function of pH, of addition of aluminum sulfate and of stirring the suspension. This process was maximized after the addition of
Externí odkaz:
https://doaj.org/article/2f356c82189f4b429a7ac725770c4af8
Publikováno v:
Revista Brasileira de Ciência do Solo, Vol 28, Iss 1, Pp 125-136 (2004)
A calagem e a aplicação de gesso levam a modificações químicas no solo que podem influenciar o crescimento radicular e a produção de culturas anuais. Com o objetivo de avaliar as alterações químicas do solo e a resposta do milho ao calcári
Externí odkaz:
https://doaj.org/article/cdaa877645b545aab633161da35dd38b
Publikováno v:
min - Minimally Invasive Neurosurgery. 53:29-33
INTRODUCTION: Current advances in frame modeling and computer software allow stereotactic procedures to be performed with great accuracy and minimal risk of neural tissue or vascular injury. CASE REPORT: In this report we associate a previously descr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::97393dd675c46f3681fe82a587f2f797
https://doi.org/10.1055/s-0030-1247555
https://doi.org/10.1055/s-0030-1247555