Results 11 to 20 of about 4,470 (113)

DETECÇÃO DE INSETICIDAS POR BIOENSAIO COM DROSOPHILA MELANOGASTER

open access: yesArquivos do Instituto Biológico, 2002
RESUMO A sensibilidade da mosca Drosophila melanogaster para inseticidas foi avaliada para os organofosforados dimetoato e ometoato, carbamatos carbofuran e carbaril e os piretróides permetrina, deltametrina e alfa-cipermetrina. A finalidade do trabalho foi a de determinar sua eficiência como método de triagem na detecção de resíduos de inseticida ...
R. Hirata, S.S. Dias, A.R. Rosa
openaire   +1 more source

Adulteration and Contamination of Commercial Sap of Hymenaea Species

open access: yesEvidence-Based Complementary and Alternative Medicine, Volume 2017, Issue 1, 2017., 2017
The Hymenaea stigonocarpa and Hymenaea martiana species, commonly known as “jatobá,” produce a sap which is extracted by perforation of the trunk and is commonly used in folk medicine as a tonic. For this study, the authenticity of commercial samples of jatobá was verified by the identification of the main compounds and multivariate analysis and ...
Katyuce de Souza Farias   +10 more
wiley   +1 more source

Production of the Quinone‐Methide Triterpene Maytenin by In Vitro Adventitious Roots of Peritassa campestris (Cambess.) A.C.Sm. (Celastraceae) and Rapid Detection and Identification by APCI‐IT‐MS/MS

open access: yesBioMed Research International, Volume 2013, Issue 1, 2013., 2013
Establishment of adventitious root cultures of Peritassa campestris (Celastraceae) was achieved from seed cotyledons cultured in semisolid Woody Plant Medium (WPM) supplemented with 2% sucrose, 0.01% PVP, and 4.0 mg L−1 IBA. Culture period on accumulation of biomass and quinone‐methide triterpene maytenin in adventitious root were investigated.
Tiago Antunes Paz   +6 more
wiley   +1 more source

Biological Activities of Libidibia (Caesalpinia) ferrea var. parvifolia (Mart. ex Tul.) L. P. Queiroz Pod Preparations

open access: yesEvidence-Based Complementary and Alternative Medicine, Volume 2012, Issue 1, 2012., 2012
Libidibia ferrea has been used in folk medicine throughout Brazil, and this study evaluated the biological activities of crude extract (CE) as well as a partially purified fraction (F80) obtained from its pods. Results from the MTT assay revealed that only F80 inhibited NCI‐H292 cell growth; however, neither CE nor F80 reduced HEp‐2 cell growth or ...
A. C. C. Freitas   +10 more
wiley   +1 more source

Bioensaios de atividade alelopática dos esteroides espinasterol, espinasterona e glicopiranosil espinasterol [PDF]

open access: yesPlanta Daninha, 2012
Três esteroides (espinasterol, espinasterona e glicopiranosil espinasterol) foram isolados do caule de Moutabea guianensis, planta de origem amazônica. Suas estruturas foram determinadas a partir das análises de RMN e por comparação com dados espectroscópicos da literatura. Foram avaliadas as atividades alelopáticas das três substâncias em duas plantas
Ripardo Filho, H.S.   +5 more
openaire   +3 more sources

Bioensaios em painéis confeccionados com eucalipto e bagaço de cana-de-açúcar [PDF]

open access: yesRevista Árvore, 2014
No desenvolvimento de painéis, deve-se dar destaque a ensaios que remetam à aplicabilidade final do produto, como os ensaios de durabilidade ao ataque de fungos e cupins. Nesse contexto, painéis confeccionados com diferentes percentuais de partículas de bagaço de cana-de-açúcar (Saccharum sp.) e fibras de eucalipto (Eucalyptus grandis), aglutinados com
Belini, Ugo Leandro   +6 more
openaire   +5 more sources

Corrigendum to “Biochemical and Biological Profile of Parotoid Secretion of the Amazonian Rhinella marina (Anura: Bufonidae)”

open access: yes, 2019
BioMed Research International, Volume 2019, Issue 1, 2019.
Daniel S. S. de Medeiros   +15 more
wiley   +1 more source

Phytotoxicity and cytogenotoxicity of water and sediment of urban stream in bioassay with Lactuca sativa [PDF]

open access: yes, 2013
The aim of this study was to evaluate the spatial and temporal influence of the phytotoxicity and cytogenotoxicity of water and sediment of urban stream on the germination and initial growth of Lactuca sativa.
Barbosa, Sandro   +5 more
core   +4 more sources

DANOS CELULARES CAUSADOS PELA ÁGUA AVALIADOS PELO BIOENSAIO DE Allium cepa

open access: yesActa Elit Salutis, 2020
Este estudo teve como objetivo avaliar o potencial ecogenotoxicológico de amostras de poços artesianos utilizando-se o sistema teste Allium cepa. As amostras analisadas foram obtidas na região sudoeste do Paraná, no município de Realeza. Para cada tratamento, cinco bulbos de Allium cepa foram postos para germinar durante 72 horas e como controle ...
Francili Regina Varaschini   +5 more
openaire   +2 more sources

Feline Cryptococcosis due to Cryptococcus gattii VGII (Recently Renamed as C. deuterogattii) in an FIV‐Positive Cat With Demodicosis From Manaus, Central Amazon, Brazil

open access: yesCase Reports in Veterinary Medicine, Volume 2025, Issue 1, 2025.
This case report documents the diagnosis and successful treatment of cryptococcosis caused by Cryptococcus gattii VGII in a 20‐month‐old male domestic shorthair cat from Manaus, Brazil, which was concurrently infected with feline immunodeficiency virus (FIV) and diagnosed with demodicosis.
Nayara de Fátima Lazameth-Diniz   +15 more
wiley   +1 more source

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