W O Microemulsions
Mostrando 1-12 de 13 artigos, teses e dissertações.
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1. Optimization of the conditions for producing water-in-oil-in-water microemulsions and spray-dried microcapsule of tomato extract powder
Abstract The objective of this study was to investigate optimized conditions for producing water-in-oil-in-water (W/O/W) microemulsions and spray-dried microcapsules of tomato extracts. The condition of highest yield for W/O/W microemulsification was optimized by response surface methodology (RSM). The independent variables were ratio of tomato extract to M
Food Sci. Technol. Publicado em: 22/10/2018
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2. Evaluation of different adjuvants formulations for bluetongue vaccine
This study investigated the adjuvant potential of W/O/W multiple emulsions and microemulsions, comparing them with traditional aluminum hydroxide and oil-in-water emulsion adjuvants against bluetongue vaccine (BTV). Local inflammatory reactions were assessed in rabbits by measuring the temperature of the animals and the skin thickness at the site of applicat
Braz. arch. biol. technol.. Publicado em: 25/10/2013
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3. Physical chemical properties and kinetics of redox poocesses in water/soybean oil microemulsions
Microemulsões de água em óleo (ME w/o) constituídas de água, óleo de soja, SDS (dodecil sulfato de sódio) e diversos álcoois de cadeia curta foram caracterizadas sob o ponto de vista físico-químico e de propriedades eletroanalíticas. Foram testados diferentes co-surfactantes e razões surfactante:co-surfactante, sendo a ME com a composição mais
Publicado em: 2010
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4. Reciclagem de material asfáltico fresado utilizando solventes e microemulsões
With the increase of asphalt milling services was also a significant increase in recycling services pavements. The techniques used today are basically physical processes in which the milled material is incorporated into new asphalt mixtures or executed on site, with the addition of virgin asphalt and rejuvenating agent. In this paper seeks to analyze the eff
Publicado em: 2010
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5. Water in soybean oil microemulsions as medium for electrochemical measurements
Microemulsões de água em óleo de soja (w/o ME) foram preparadas com dodecil sulfato de sódio (SDS) como surfactante e com os álcoois amílico ou isoamílico, como co-surfactantes. A composição 40,0% de óleo, 43,2% de álcool, 10,8% de SDS e 6,0% de água, em massa, na razão 1:4 [SDS]:[álcool], apresentou a maior estabilidade termodinâmica. O taman
Publicado em: 2010
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6. Physical chemical properties and kinetics of redox processes in water/soybean oil microemulsions
Microemulsões de água em óleo (ME w/o) constituídas de água, óleo de soja, SDS (dodecil sulfato de sódio) e diversos álcoois de cadeia curta foram caracterizadas sob o ponto de vista físico-químico e de propriedades eletroanalíticas. Foram testados diferentes co-surfactantes e razões surfactante:co-surfactante, sendo a ME com a composição mais
Journal of the Brazilian Chemical Society. Publicado em: 2008
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7. Estudo comparativo da eficiência da difenilcarbazida e do óleo de coco saponificado microemulsionados na inibição da corrosão de aço carbono
The effectiveness of microemulsions (ME) of saponified coconut oil (OCS-ME) and diphenylcarbazide (DC-ME) on a carbon steel corrosion inhibition process was evaluated using an electrochemical method of polarization resistance. The ME was prepared with OCS, butanol, kerosene and saline solutions. OCS-ME and DC-ME showed highest inhibitions effects (77% and 92
Química Nova. Publicado em: 2007-10
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8. Atividade antitumoral e toxicidade de nanocÃpsulas contendo o Ãcido fumarprotocetrÃrico isolado dec(lÃquen)
The potential of controlled release in optyimizing drug targeting has offered a tremendous advancement in the manipulation of novel dosage forms such as nanoparticles, wich are solid colloidal polymeric carriers in size range of 1-1,000 nm. Oil-in-water microemulsions as a drug delivery system include improvement of drug solubilization. The fumarprotocetrari
Publicado em: 2004
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9. Water in soybean oil microemulsions as medium for electrochemical measurements
Microemulsões de água em óleo de soja (w/o ME) foram preparadas com dodecil sulfato de sódio (SDS) como surfactante e com os álcoois amílico ou isoamílico, como co-surfactantes. A composição 40,0% de óleo, 43,2% de álcool, 10,8% de SDS e 6,0% de água, em massa, na razão 1:4 [SDS]:[álcool], apresentou a maior estabilidade termodinâmica. O taman
Journal of the Brazilian Chemical Society. Publicado em: 2003-08
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10. Microemulsões a base de óleos vegetais: formação, propriedades e emprego na descontaminação EX-SITU de Solo / Vegetable oil-based microemulsions: formation, properties and application for "exsitu" soil decontamination
In the present project, we were interested in assessing the use of Brazilian vegetable oils in the "ex-situ" decontamination of soils from polycyclic aromatic hydrocarbons (PAHs). In this process, contaminated soil is treated with a microemulsion (µE) composed of water (W) /commercial non-ionic surfactant (S) C9/11EO4 /oil (O). The latter term refers to the
Publicado em: 2000
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11. Reações de transferência de acila em microemulsões água/óleo: hidrólise de benzoatos de fenila catalisada pelo ânion o-iodosobenzoato. / Acyl-transfer reactions in water/oil microemulsions: phenyl benzoates hydrolysis catalysed by the o-iodosobenzoate anion.
The mechanism of hydrolysis of the following two series of phenylbenzoate esters catalyzed by 1-oxi-1,2-benziodoxol-3(1H)-one (o-iodosobenzoate anion, IBA-), was studied in water-in-oil microemulsion (W/O mE) of benzylhexadecyl- dimethylammonium chloride (CBzCl) in benzene. 4-nitrophenyl 4-X-benzoates (X= NO2, CN, Cl and H) and Y-nitrophenyl 4-nitrobenzoates
Publicado em: 1997
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12. Otimização do processo de recuperação do cromo de efluentes de curtumes por microemulsões no extrator Morris / Optimisation of chromium recovery process from tanning effluent through micro emulsions in a Morris extractor
Os Curtumes são indústrias que transformam peles em couro. Devido a complexidade do processo de transformação são utilizadas grandes quantidades de agentes químicos e gerados grandes volumes de efluentes e resíduos sólidos. O cromo presente nas águas residuárias geradas pelos curtumes constitui um sério problema ambiental e sua recuperação poder
Publicado em: 1997