Petroleum Plant
Mostrando 1-12 de 58 artigos, teses e dissertações.
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1. EPOXIDATION OF JATROPHA METHYL ESTERS VIA ACIDIC ION EXCHANGE RESIN: OPTIMIZATION AND CHARACTERIZATION
Abstract Plant oils and their derivatives have been vigorously exploited as alternatives for synthesis of epoxides due to depletion of petroleum resources. In this study, crude jatropha oil (CJO) was subjected to a transesterification process to form jatropha methyl esters (JME) using peroxyacetic acid generated in situ from hydrogen peroxide and acetic acid
Braz. J. Chem. Eng.. Publicado em: 30/09/2019
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2. Phyto- and Bio-Chemical evaluation of Diospyros kaki L. cultivated in Egypt and its biological activities
Resumo Diospyros kaki L. ou Costata é a principal variedade de caqui progressivamente consumida no mercado e exportação egípcia. O objetivo deste estudo foi investigar os efeitos bioprotetores do extrato alcoólico de frutos e folhas de D. kaki utilizando modelos de ratos “in vivo”. Extratos de éter de petróleo provenientes de frutos e folhas foram
Braz. J. Biol.. Publicado em: 05/08/2019
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3. Antinociceptive effect of semi-purified petroleum ether partition of Muntingia calabura leaves
ABSTRACT Muntingia calabura L., Muntingiaceae, is a medicinal plant for various pain-related diseases. The aims of the present study were to determine the antinociceptive profile and to elucidate the possible mechanisms of antinociception of petroleum ether partition obtained from crude methanol extract of M. calabura leaves using various animal models. The
Rev. bras. farmacogn.. Publicado em: 2016-08
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4. Determination of the regulatory properties of Yucca schidigera extracts on the biochemical parameters and plasma hormone levels associated with obesity
ABSTRACT Yucca schidigera Ortgies, Asparagaceae, is a herbaceous plant. Due to the high saponin content the powdered branches and leaves are used as natural food additive for human and animal. The aim of this study was to investigate the effects of Y. schidigera extracts on plasma leptin, ghrelin, adiponectin, insulin, thyroid hormones and some biochemical p
Rev. bras. farmacogn.. Publicado em: 2016-04
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5. Effect of biologically treated petroleum sludge on seed germination and seedling growth of Vigna unguiculata (L.) Walp. (Fabaceae)
The present investigation was carried out to study the response of different concentrations of treated petroleum sludge on seed germination, root and shoot length and tolerance of Vigna unguiculata (L.) Walp. The biologically treated petroleum sludge with bacterial consortium showed 54.8% reduction in total petroleum hydrocarbons. Treated sludge was utilized
Braz. arch. biol. technol.. Publicado em: 18/03/2014
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6. Evaluation of antinociceptive and anti-inflammatory activities of extract and fractions of Eugenia jambolana root bark and isolation of phytoconstituents
Eugenia jambolana Lam., Myrtaceae, is a widely distributed and traditionally well known plant in India. The root bark of the plant was extracted with ethanol and then successively fractionated into petroleum ether fraction, chloroform fraction, n-butanol fraction and methanol fraction. The extract and fractions of the plant material were evaluated for the an
Rev. bras. farmacogn.. Publicado em: 20/08/2013
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7. Melhoria das propriedades do gesso com aditivo sintético e com látex de euphorbia tirucalli e de hevea brasiliensis para uso na construção de habitações de interesse social.
Um dos grandes desafios da humanidade é utilizar o ambiente em que vive de forma racional, de modo a não comprometer a sua existência nem a das gerações futuras. Toda atividade de construção e de ocupação de áreas gera um impacto ambiental que pode ser irreversível, exaurindo recursos naturais ou contaminando a terra, o ar ou os cursos dágua. O t
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 05/03/2012
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8. Photosynthesis and antioxidant activity in Jatropha curcas L. under salt stress
Biodiesel is an alternative to petroleum diesel fuel. It is a renewable, biodegradable, and nontoxic biofuel. Interest in the production of biodiesel from Jatropha curcas L. seeds has increased in recent years, but the ability of J. curcas to grow in salt-prone areas, such as the Caatinga semiarid region, has received considerably meager attention. The aim o
Braz. J. Plant Physiol.. Publicado em: 2012
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9. Desenvolvimento de uma planta piloto para estudos de poços de petróleo produzindo por plunger lift
Este trabalho se propõe a descrever uma Planta Piloto para poços de petróleo equipados com elevação artificial do tipo plunger lift. Além de um tamanho reduzido (21,5 metros) e estar sobre a superfície, o poço da planta possui parte de sua estrutura em acrílico transparente, permitindo a fácil visualização de fenômenos inerentes ao método. A fo
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/10/2011
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10. Phytochemical screening and antimicrobial activity of roots of Murraya koenigii (Linn.) Spreng. (Rutaceae)
Murraya koenigii, family Rutaceae, commonly known as Curry leaf plant is a highly valued plant for its medicinal value and characteristic aroma. The plant is a rich source of carbazole alkaloids. The petroleum ether, chloroform, ethyl acetate and ethanol extracts of roots of the plant were screened for phytochemical properties and antimicrobial activity for
Braz. J. Microbiol.. Publicado em: 2011-12
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11. Atual estágio de desenvolvimento da tecnologia GTL e perspectivas para o Brasil
Although the production of liquid fuels from coal, natural gas (CTL and GTL processes) and other carbon sources has been discovered 90 years ago, the interest was renewed in the last years motivated by stranded gas reserves and by petroleum market instability. This review intends to show the scenario of these technologies nowadays, discussing the applied tec
Química Nova. Publicado em: 2011
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12. Exergy and thermoeconomic evaluation of a petroleum refinery hydrogem production unit. / Produção de hidrogênio em refinarias de petróleo: avaliação exergética e custo de produção.
Pure hydrogen (H2) is an useful gas in chemical and petrochemical industries because it reacts easily with several other elements. On refineries, hydrogen is used to sequestrate sulphur from diesel and gasoline. Emission restrictions regard to fossil fuels are rising the world hydrogen demands. In spite of its abundance, hydrogen is normally found associated
Publicado em: 2010