Zobrazeno 1 - 10 of 19 pro vyhledávání: '"Cristina Maria, Barra"'
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Akademický článek
Estudo da contaminação de poços rasos por combustíveis orgânicos e possíveis conseqüências para a saúde pública no Município de Itaguaí, Rio de Janeiro, Brasil A study of groundwater contamination with organic fuels and potential public health impact in Itaguaí, Rio de Janeiro State, Brazil
Autor: Rosimar Lima Brandão Silva, Cristina Maria Barra, Teófilo Carlos do Nascimento Monteiro, Ogenis Magno Brilhante
Publikováno v: Cadernos de Saúde Pública, Vol 18, Iss 6, Pp 1599-1607 (2002)
A contaminação de águas subterrâneas por combustível derivado de petróleo tem sido objeto de crescente pesquisa no Brasil. Os compostos benzeno, tolueno, etilbenzeno e xilenos (BTEX), presentes nesses combustíveis, são extremamente tóxicos
Externí odkaz: https://doaj.org/article/8b226658afed4dac8129b2824688aaef
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4
Rifle bullets comparison by wavelength dispersive X-ray fluorescence spectroscopy and chemometric analysis
Autor: André V. S. Canuto, Cristina Maria Barra, Gabriel M. Viegas, Gustavo G. Shimamoto, Victor Gabriel de Paula Saide, Matthieu Tubino, José G. Rocha Junior
Publikováno v: Forensic science international. 325
Despite Federal Bureau of Investigation Laboratory announcing the discontinuation of bullet lead examinations, knowledge of the composition of the bullets has been used as an alternative means of identifying their origin, achieving success in some ca
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5238b65e5451596a55a14496ea6b0e3b
https://pubmed.ncbi.nlm.nih.gov/34171545
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7
Biodiesel Synthesis: Influence of Alkaline Catalysts in Methanol-Oil Dispersion
Autor: Glauco F. Bauerfeldt, Daniel Ananias Reis De Campos, Andreza Duarte Memelli Mendonça, Renilson De Oliveira Mapele, Cristina Maria Barra, Matthieu Tubino, José G. Rocha Jr.
Publikováno v: Journal of the Brazilian Chemical Society v.30 n.2 2019
Journal of the Brazilian Chemical Society
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
Biodiesel synthesis from soybean oil using methanol and alkaline catalysts occurs in the following two consecutive steps: dispersion of methanol in the oil and methanolysis. The effect of the alkaline catalysts NaOCH3, KOCH3, NaOH, and KOH in the dis
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3965f2646a4893b16d4824ed8db56137
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532019000200342
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8
Substituição do nitrobenzeno pelo óleo de soja como uma proposta para o ensino do método de Volhard em Análise Quantitativa
Autor: Roberta Barra P. Lã, Bárbara Helena S. Vieira, Otavio Raymundo Lã, José G. Rocha Jr., Cristina Maria Barra
Publikováno v: Química Nova v.40 n.9 2017
Química Nova
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
Química Nova, Vol 40, Iss 9, Pp 1130-1135
Química Nova, Volume: 40, Issue: 9, Pages: 1130-1135, Published: SEP 2017
Volhard method is extensively employed in the teaching laboratories of classical quantitative analysis to chloride determination and is based on the reaction of Ag+ with Cl- and Ag+ residual titration with SCN-. Its drawback is that SCN- reacts with
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::15b1e8f9c9007c9acc17582ee1e559d5
https://doi.org/10.21577/0100-4042.20170090
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9
Estudo da contaminação de poços rasos por combustíveis orgânicos e possíveis conseqüências para a saúde pública no Município de Itaguaí, Rio de Janeiro, Brasil
Autor: Teófilo Carlos do Nascimento Monteiro, Rosimar Lima Brandão Silva, Cristina Maria Barra, Ogenis Magno Brilhante
Publikováno v: Cadernos de Saúde Pública, Vol 18, Iss 6, Pp 1599-1607 (2002)
Cadernos de Saúde Pública v.18 n.6 2002
Cadernos de Saúde Pública
Fundação Oswaldo Cruz (FIOCRUZ)
instacron:FIOCRUZ
Cadernos de Saúde Pública, Volume: 18, Issue: 6, Pages: 1599-1607, Published: DEC 2002
Cadernos de Saúde Pública, Vol 18, Iss 6, Pp 1599-1607
A contaminação de águas subterrâneas por combustível derivado de petróleo tem sido objeto de crescente pesquisa no Brasil. Os compostos benzeno, tolueno, etilbenzeno e xilenos (BTEX), presentes nesses combustíveis, são extremamente tóxicos
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9a2ecbbb0181733ef9701b6ee143c952
http://www.scielosp.org/scielo.php?script=sci_arttext&pid=S0102-311X2002000600014
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10
Evaluation of four aluminum extraction methods using selected Brazilian soils
Autor: Reinaldo Calixto de Campos, Daniel Vidal Pérez, Cristina Maria Barra, Adilson J. Curtius
Publikováno v: Communications in Soil Science and Plant Analysis. 32:1969-1980
Thirty-two soil samples from different locations of the Rio de Janeiro State, Brazil, were studied in order to evaluate the amount of aluminum (Al) obtained by three extractants (1 M KCl, 1 M NH4OAc, 0.5 M CuCl2) and by the extraction of humic and fu
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::91889fb363c7b83ea6cd7bda89c437f1
https://doi.org/10.1081/css-120000262
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