Výsledky vyhledávání - "P.H.A. Aragão"

Elementary chemical analysis in leaves infected by fumagina by X-Ray fluorescence technique

Autor: P. S. Parreira, Virgílio Franco do Nascimento Filho, P.H.A. Aragão, Maria Sélia Blonski, Carlos Roberto Appoloni

Publikováno v: Brazilian Archives of Biology and Technology, Vol 50, Iss 5, Pp 851-860 (2007)
Brazilian Archives of Biology and Technology, Volume: 50, Issue: 5, Pages: 851-860, Published: SEP 2007
Brazilian Archives of Biology and Technology v.50 n.5 2007
Brazilian Archives of Biology and Technology
Instituto de Tecnologia do Paraná (Tecpar)
instacron:TECPAR

Energy Dispersion X-Ray Fluorescence Technique (EDXRF) was employed to study the effects of the fumagina disease on the elementary chemical composition of the leaves. The experimental set up consisted of a Mo X-ray tube (Ksubµ = 17.44 keV) with Zr f

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::59523ceaf34e635b915321e920392ac6
https://doi.org/10.1590/s1516-89132007000500013

Zobrazit plný text záznamu

Two media method for gamma ray attenuation coefficient measurement of archaeological ceramic samples

Autor: Fernando Rodolfo Espinoza-Quiñones, M M Coimbra, R.M Cunha e Silva, Carlos Roberto Appoloni, P.H.A. Aragão, P. S. Parreira

Publikováno v: Applied Radiation and Isotopes. 53:1011-1016

This work reports the application of an alternative methodology for the linear attenuation coefficient determination of irregular shape samples, in such a way that it is not necessary to know the sample thickness. Based on this method, indigenous arc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4278689977ffd9ad57d0ff8c0f4ef510
https://doi.org/10.1016/s0969-8043(99)00252-3

Zobrazit plný text záznamu

Chaotic motion of magnetotactic bacteria

Autor: M. Simões, P.H.A. Aragão

Publikováno v: Chaos, Solitons & Fractals. 11:923-928

The motion of a magnetotactic bacterium submitted to an oscillating magnetic field was studied. The nature of the U-turn process, which occurred when the magnetic field was reversed, was investigated. It is analytically shown that this process presen

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6828c8b1f0f94f9c0d420012ccd14f21
https://doi.org/10.1016/s0960-0779(98)00257-4

Zobrazit plný text záznamu

Comparison of metal analysis in sediments using EDXRF and ICP-OES with the HCl and Tessie extraction methods

Autor: Wagner José Barreto, Jorge Nozaki, Sônia Regina Giancoli Barreto, Ieda Spacino Scarminio, P.H.A. Aragão, Virgílio Franco do Nascimento Filho, Elisabeth de Oliveira

Publikováno v: Talanta. 64(2)

The work presents an investigation on metal availability in sediments during 13 months using the dispersive-energy X-ray fluorescence (EDXRF) and atomic emission spectrometry with induced argon plasma (ICP-OES) techniques and single extraction (0.1 m

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::84c04ff0e616363ff956a80ad39ba524
https://pubmed.ncbi.nlm.nih.gov/18969610

Zobrazit plný text záznamu

A Study of the Elements in Sooty Mould Phytopathology by Physical Techniques

Autor: V.F. Nascimento Filho, S.B. Dos Santos, E.C.S. Da Costa, P.H.A. Aragão, Manuela Costa Melo, N.M. Suguihiro, M. Estevam, Antônio Pires Azevedo Junior, E. Di Mauro

Publikováno v: Scopus-Elsevier

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d170a16aee264750699004b6724dc374
https://doi.org/10.1017/s1431927603447697

Zobrazit plný text záznamu

EDXRF study of Tupi-Guarani archaeological ceramics

Autor: P.F. Barbieri, A.O. dos Santos, M M Coimbra, L.M. da Silva, Carlos Roberto Appoloni, P.H.A. Aragão, V. F. do Nascimento Filho, F.R. Espinoza Quiñones

Publikováno v: Radiation Physics and Chemistry. 61:711-712

A set of Indian Brazilian pottery fragments belonging to Tupi-Guarani tradition has been studied by EDXRF. The main objective was to characterize the ceramic paste, as well as the superficial layer of the ceramic fragments, in order to get qualitativ

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9e1621956cc900611e07821d7d6f8a1e
https://doi.org/10.1016/s0969-806x(01)00383-8

Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání