Results 81 to 90 of about 326,787 (224)

1º Congresso Internacional de Geologia de Timor-Leste. [PDF]

open access: yes, 2012
Congresso Internacional de Geologia de Timor ...
Costa, Norberta, Nogueira, Pedro
core  

Flavonoids: A Review of Antibacterial Activity Against Gram‐Negative Bacteria

open access: yesInternational Journal of Microbiology, Volume 2025, Issue 1, 2025.
The rise in bacterial resistance to conventional antibiotics has led to the search for alternative antimicrobial agents, such as flavonoids, which are widely distributed in plants and known for their antibacterial properties. This review examines the antibacterial activity of flavonoids against Gram‐negative bacteria and identifies gaps in current ...
Joice Barbosa do Nascimento   +2 more
wiley   +1 more source

Predicting the Ecological Risks of Phytoestrogens in Coastal Waters Using In Silico and In Vitro Approaches

open access: yesCoasts
Emerging pollutants, like phytoestrogens, are gaining attention in the scientific community for their impact on aquatic organisms. Nevertheless, there is a paucity of studies examining their effects on tropical aquatic species.
Luciana Lopes Guimarães   +7 more
doaj   +1 more source

3β-O-Tigloylmelianol from Guarea kunthiana: A New Potential Agent to Control Rhipicephalus (Boophilus) microplus, a Cattle Tick of Veterinary Significance

open access: yesMolecules, 2014
Chemical investigation of Guarea kunthiana fruits, guided by their effect on the reproductive cycle of engorged females of the cattle tick Rhipicephalus (Boophilus) microplus—a major economic problem to the livestock industry worldwide—led to isolation
Carlos Henrique Miguita   +6 more
doaj   +1 more source

Sobrevivência de patógenos em grãos de milho tratados com produtos naturais. [PDF]

open access: yes, 2013
Resumo: Diante da propriedade inibitória da canela (Cinnamomum zeylanicum) para gêneros fúngicos, este trabalho teve por objetivo avaliar a ação da canela em diferentes formas e dois tipos de aplicação na sanidade de grãos de milho naturalmente ...
CASTANHA, R. F.   +3 more
core  

Tubastrine, an antioxidant molecule from Tubastraea tagusensis sun coral, in the reversion of oxidative stress and neuron's death induced by Aβ42

open access: yesJournal of Cellular and Molecular Medicine, Volume 28, Issue 24, December 2024.
Abstract Alzheimer's disease (AD) is a progressive neurodegenerative disorder involving mitochondrial dysfunction and consequent production of reactive oxygen species (ROS), generated after amyloid peptide (Aβ42) accumulation. In this study, we isolated a new antioxidant molecule from the sun coral Tubastraea tagusensis and analysed it in cells exposed
Amanda G. Silva   +6 more
wiley   +1 more source

Effect of Byrsonima sericea DC. leaf extracts on mice gastrointestinal tract

open access: yesToxicology Reports, 2019
Byrsonima sericea DC. (Malpighiaceae) leaves are popularly folk medicine in Brazil used to treat gastro-intestinal disorders including diarrhea and gastric diseases.
Patrícia de Araújo Rodrigues   +4 more
doaj   +1 more source

Amazônia: recuperar áreas degradadas, passar do discurso para a prática. [PDF]

open access: yes, 2011
A solução dos problemas na Amazônia não são independentes, mas conectada com outras partes do País e do mundo. A redução dos desmatamentos e queimadas na Amazônia depende do desenvolvimento de atividades agrícolas adequadas nas áreas já desmatadas e que ...
HOMMA, A. K. O.
core  

Produtos naturais utilizados no combate à dengue

open access: yesRevista Saúde & Diversidade, 2019
Introdução: A dengue é distribuída em regiões tropicais onde, o clima e os hábitos urbanos oferecem condições favoráveis para o desenvolvimento e a proliferação de seu principal vetor, o mosquito Aedes aegypti. O vírus da dengue é transmitido pela picada do mosquito fêmea infectado e têm crescido a preocupação da população e das autoridades da saúde ...
Beatriz de Cássia da Silva Jacob Jacob   +1 more
openaire   +1 more source

Ru(II)-Catalyzed Asymmetric Transfer Hydrogenation of α-Alkyl-β-Ketoaldehydes via Dynamic Kinetic Resolution

open access: yesMolecules
The (R,R)-Teth-TsDPEN-Ru(II) complex promoted the one-pot double C=O reduction of α-alkyl-β-ketoaldehydes through asymmetric transfer hydrogenation/dynamic kinetic resolution (ATH-DKR) under mild conditions.
Daiene P. Lapa   +4 more
doaj   +1 more source

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