Consulta: subjectFacets:"Titanium dioxide"
Registros recuperados: 3
Data/hora: 13/06/2024 06:56:49

Fecal excretion patterns and short term bias of internal and external markers in a digestion assay with cattle
Provedor de dados: 96
Autores: Sampaio,Cláudia Batista; Detmann,Edenio; Valente,Tiago Neves Pereira; Costa,Viviane Aparecida Carli; Valadares Filho,Sebastião de Campos; Queiroz,Augusto Cesar de.
The objective of this work was to evaluate the fecal excretion profile and the short term bias of the external markers chromic oxide and titanium dioxide and the internal markers indigestible dry matter (iDM), indigestible neutral detergent fiber (iNDF) and indigestible acid detergent fiber (iADF) in a digestion trial with cattle fed different diets. Fourteen F1 Red Angus × Nellore bulls averaging 12 months old and 287 kg were kept in individual stalls. The animals were fed elephant grass silage, corn silage or signal grass hay, supplemented or not with 20% of concentrate mixture. The experiment consisted of two 13-day experimental periods according to a 2 × 2 Latin square design with seven squares grouping. The animals received 10 g of chromic oxide and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chromic oxide; Indigestible acid detergent fiber; Indigestible dry matter; Indigestible neutral detergent fiber; Titanium dioxide.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000300026

Evaluation of fecal recovering and long term bias of internal and external markers in a digestion assay with cattle
Provedor de dados: 96
Autores: Sampaio,Cláudia Batista; Detmann,Edenio; Valente,Tiago Neves Pereira; Souza,Marjorrie Augusto de; Valadares Filho,Sebastião de Campos; Paulino,Mário Fonseca.
The objective of this work was to estimate the total recovering and the long term bias of the estimates of fecal excretion using the external markers chromic oxide and titanium dioxide and internal markers indigestible dry matter (iDM), indigestible neutral detergent fiber (iNDF) and indigestible acid detergent fiber (iADF) in a digestion assay with cattle fed different diets. Fourteen F1 Red Angus x Nellore averaging 12 months and 287 kg were used. The animals were fed with elephant grass silage, corn silage or signal grass hay and supplemented or not with 20% of concentrate. The experiment consisted of two 13-days experimental periods according to a 2 x 2 Latin square design with seven squares. The animals received 10 g/d of chromic oxide and titanium...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chromic oxide; Indigestible acid detergent fiber; Indigestible dry matter; Indigestible neutral detergent fiber; Titanium dioxide.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000100025

Evaluation of the Toxicity of Silver/Silica and Titanium Dioxide Particles in Mammalian Cells
Provedor de dados: 52
Autores: Pittol,Michele; Tomacheski,Daiane; Simões,Douglas Naue; Ribeiro,Vanda Ferreira; Santana,Ruth Marlene Campomanes.
ABSTRACT The increasing concern over the spread of diseases has lead to a high consumption of antimicrobial additives in the medical and industrial fields. Since these particles can lixiviate from loaded materials, the contact between this additive and mammalian cells can occur during manufacture, use and disposal of the products. Silver on fumed silica (AgNP_SiO2) and titanium dioxide (TiO2) can be used as antimicrobial additives that are applied in polymeric formulation. While these additives can inhibit bacteria, fungus and virus proliferation; they may also be harmful to humans. Standard toxicological studies were undertaken using the MTT (3-(4,5-dimethylthiazol-2-yl)-2,5 diphenyltetrazolium bromide), CBPI (cytokinesis-block proliferation index) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Titanium dioxide; Silver; Silica; Toxicology; Mammalian cell.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132018000100318