Results 21 to 30 of about 4,784 (176)

Toxicidade e genotoxicidade do inseticida ciromazina em bioensaio com Allium cepa

open access: yesResearch, Society and Development, 2023
Os agrotóxicos são produtos químicos sintéticos amplamente utilizados no âmbito agrícola para controlar pragas e doenças. O modelo de agricultura predominante no Brasil baseia-se no uso demasiado desses produtos e atualmente o país ocupa o primeiro lugar no ranking mundial de consumo.
Eliane Alves Lustosa   +5 more
openaire   +2 more sources

Human mesenchymal stromal cells in adhesion to cell‐derived extracellular matrix and titanium: Comparative kinome profile analysis

open access: yesJournal of Cellular Physiology, Volume 234, Issue 3, Page 2984-2996, March 2019., 2019
Kinase‐mediated signalling pathways are the key mediators of signal transduction upon cell adhesion, regulating cell behaviour. For the first time to our knowledge, a PamChip® kinase array was used to comprehensively study kinome changes in human mesenchymal stromal cells upon adhesion to cell‐derived extracellular matrix and titanium.
Marta Baroncelli   +6 more
wiley   +1 more source

Potencial de lixiviação de herbicidas no solo submetidos a diferentes simulações de precipitação Leaching potential of herbicides in soil under different rainfall simulations

open access: yesPlanta Daninha, 2008
O objetivo deste trabalho foi avaliar a influência da precipitação pluvial na lixiviação de herbicidas recomendados para a cultura da cana-de-açúcar em Latossolo Vermelho distrófico.
P.A. Monquero   +4 more
doaj   +1 more source

Sorção do sulfentrazone em diferentes tipos de solo determinada por bioensaios [PDF]

open access: yesPlanta Daninha, 2014
Objetivou-se com este trabalho avaliar o potencial de sorção do sulfentrazone em cinco diferentes tipos de solo, por meio da técnica do bioensaio. O comportamento do herbicida foi estudado nos seguintes tipos de solo: Planossolo Háplico, Argissolo Vermelho, Cambissolo Húmico, Neossolo Regolítico e Latossolo Vermelho-Amarelo, além de um controle, apenas
Freitas, M.A.M.   +6 more
openaire   +4 more sources

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

open access: yesBioMed Research International, Volume 2019, Issue 1, 2019., 2019
Skin secretions of frogs have a high chemical complexity. They have diverse types of biomolecules, such as proteins, peptides, biogenic amines, and alkaloids. These compounds protect amphibians’ skin against growth of bacteria, fungi, and protozoa and participate in defense system against attack from predators.
Daniel S. S. de Medeiros   +16 more
wiley   +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

Fitorremediação de solos contaminados com tebuthiuron utilizando-se espécies cultivadas para adubação verde Phytoremediation of tebuthiuron-contaminated soils using species cultivated for green manure

open access: yesPlanta Daninha, 2005
O emprego da fitorremediação na despoluição de solos contaminados com compostos orgânicos, inclusive herbicidas, vem sendo pesquisado ultimamente. Como o tebuthiuron pode causar sério impacto ambiental, por ser muito utilizado, apresentar longo efeito ...
F.R. Pires   +6 more
doaj   +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

Ação inseticida do extrato de Derris amazonica Killip para Cerotoma arcuatus Olivier (Coleoptera: Chrysolelidade). [PDF]

open access: yes, 2019
A abundância e o potencial inseticida de Derris amazonica e a necessidade de controle de Cerotoma arcuatus Olivier (Coleoptera: Chrysomelidae) na cultura do feijão-caupi (Vigna unguiculata L.
ALECIO, M. R.   +8 more
core   +1 more source

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