Výsledky vyhledávání - "Frances R. dos Santos"

Akademický článek

Estudo da reatividade do estado excitado triplete de 1,4-diaza-9-fluorenonas frente a doadores de hidrogênio e de elétron The reactivity of the triplet excited state of 1,4-diaza-9-fluorenones towards hydrogen and electron donors

Autor: Andreza A. C. Takaizumi, Frances R. dos Santos, Mônica T. da Silva, José Carlos Netto-Ferreira

Publikováno v: Química Nova, Vol 32, Iss 7, Pp 1799-1804 (2009)

The effect of the introduction of nitrogen atoms upon the triplet excited state reactivity of 1,4-diaza-9-fluorenone (1) and 1,4-diaza-9-benz[b]fluorenone (2), in acetonitrile, was investigated employing the nanosecond laser flash photolysis techniqu

Externí odkaz: https://doaj.org/article/6ba1141479ee49c7856d3dd728e96de8

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Akademický článek

A reatividade do estado excitado triplete de 1,3-indanodiona em benzeno Triplet excited state reactivity of 1,3-indandione in benzene solution

Autor: Frances R. dos Santos, Mônica T. da Silva, José Carlos Netto-Ferreira, Nanci C. de Lucas

Publikováno v: Química Nova, Vol 30, Iss 4, Pp 897-900 (2007)

Rate constants for the quenching of 1,3-indandione (1) triplet by olefins and by hydrogen and electron donors were obtained employing the laser flash photolysis technique in benzene solution. These rate constants ranged from 2.5x10(5) Lmol-1s-1 (for

Externí odkaz: https://doaj.org/article/4b78f4662220415aa6a6bf7e3edad665

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Akademický článek

EVALUATION OF COCAINE SAMPLES SEIZED IN THE STREETS OF THE STATE OF RIO DE JANEIRO, BRAZIL

Autor: Luiza D. Sant'Ana, Valeria C. de Sousa, Frances R. dos Santos, Bruno D. Sabino, Amadeu Cardoso, Marco Edilson F. de Lima, Rosane N. Castro

Publikováno v: Química Nova, Vol 42, Iss 4, Pp 379-386

Fifty-two samples of street cocaine seized in the state of Rio de Janeiro, from May 2016 to April 2017, were evaluated according to their purity, presence of inorganic and sugar diluents and concentration of pharmacologically active adulterants. Coca

Externí odkaz: https://doaj.org/article/9a267d496bed4bad835ae216a8550a73

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Antileishmanial activity of the essential oils of Myrcia ovata Cambess. and Eremanthus erythropappus (DC) McLeisch leads to parasite mitochondrial damage

Autor: Aline Araujo Zuma, Melissa Florencio, Gilvandete M. P. Santiago, Geovany Amorim Gomes, Dayana Rosa, Patrícia Fampa, Mário Geraldo de Carvalho, Frances R. dos Santos, Karina Martins-Cardoso, Maria Cristina M. Motta

Publikováno v: Natural Product Research. 35:6117-6121

Leishmania amazonensis is a species causative of cutaneous and anergic diffuse cutaneous leishmaniasis, treatment-resistant form, in the New World. Plants essential oils exhibit great potential as microbicide agents. We described the composition of t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::663463ebef4f5f0cc56573f23f8a89b6
https://doi.org/10.1080/14786419.2020.1827402

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EVALUATION OF COCAINE SAMPLES SEIZED IN THE STREETS OF THE STATE OF RIO DE JANEIRO, BRAZIL

Autor: Marco Edilson Freire de Lima, Valeria C. de Sousa, Rosane Nora Castro, Bruno Duarte Sabino, Frances R. dos Santos, Luiza D’Oliveira Sant’Ana, Amadeu Cardoso

Publikováno v: Química Nova, Volume: 42, Issue: 4, Pages: 379-386, Published: 27 MAY 2019
Química Nova, Vol 42, Iss 4, Pp 379-386
Química Nova v.42 n.4 2019
Química Nova
Sociedade Brasileira de Química (SBQ)
instacron:SBQ

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c4058d41128349e1bdffde12f274da48
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422019000400379&lng=en&tlng=en

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Biological activities and major components determination in essential oils intended for a biodegradable food packaging

Autor: Nathália Ramos de Melo, Ilzenayde de Araújo Neves, Frances R. dos Santos, Mário Geraldo de Carvalho, Ana Sanches-Silva, Regiane Ribeiro-Santos, Mariana Andrade

Since ancient times, aromatic plants have been used in food and in folk medicine. Currently, essential oils and their compounds are attracting great interest due to their proven action to preserve food quality, to extend foodś shelf-life and due to

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c721bc3c2b03a7a9cbf49075124e45f4
https://hdl.handle.net/10400.18/4397

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Chemical Constituents of Trichilia hirta (Meliaceae)

Autor: Milena G Curcino, Vieira, Frances R, dos Santos, Raimundo, Braz Filho, Ivo J Curcino, Vieira

Publikováno v: Natural product communications. 11(5)

A novel oleanane-type triterpene, 15-chloro-β-amyrone (1), was isolated from Trichilia hirta, together with the known compounds taraxer-3-one (2) and β-taraxerol (3), along with two novel esters, 3-(isobutyryloxy)-2,2,4-trimethylpenty palmitate (4)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::58937923670f8bc155b1761401984671
https://pubmed.ncbi.nlm.nih.gov/27319125

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Toxicological evaluation of essential oil from the leaves of Croton tetradenius (Euphorbiaceae) on Aedes aegypti and Mus musculus

Autor: Karine da Silva Carvalho, Frances R. dos Santos, Sandra Lúcia da Cunha e Silva, Mário Geraldo de Carvalho, Rômulo Carlos Dantas da Cruz, Ivone Antônia de Souza, Simone Andrade Gualberto

Publikováno v: Parasitology research. 115(9)

For control of Aedes aegypti, the main vector of dengue, botanical insecticides can be a viable alternative. Herein, we evaluated the chemical composition and insecticidal activity of the essential oils of the leaves of Croton tetradenius on Ae. aegy

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::518c04ce71e4a1dfec69fd7822258c3d
https://pubmed.ncbi.nlm.nih.gov/27169864

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