Caracterização De Nanofluidos Para Utilização Em Compressores De Refrigeração: Determinação Da Viscosidade Dinâmica, Condutividade Térmica E Estabilidade.

Azevedo, Valerio Fernandes; Almeida, Igor Marcel Gomes; Sousa, Eduardo Henrique Viana; Fontes, Francisco de Assis Oliveira; Barbosa, Cleiton Rubens Formiga

doi:10.15628/holos.2016.3802

Cited by 3 publications

(1 citation statement)

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“…Viscosity was determined using a Brookfield Digital viscometer (QUIMIS ® , Q860M26, Diadema, Brazil) equipped with a spindle No. 2, at 25 °C, in the range of 1 to 40 rpm [ 75 ].…”

Section: Methodsmentioning

confidence: 99%

Bioprospecting a Film-Forming System Loaded with Eugenia uniflora L. and Tropaeolum majus L. Leaf Extracts for Topical Application in Treating Skin Lesions

et al. 2023

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Natural products can be used as complements or as alternatives to synthetic drugs. Eugenia uniflora and Tropaeolum majus are natives of Brazil and have antimicrobial, anti-inflammatory, and antioxidant activities. This study aimed to develop a film-forming system (FFS) loaded with plant extracts with the potential for treating microbial infections. E. uniflora and T. majus leaf extracts were prepared and characterized, and the individual and combined antioxidant and antimicrobial activities were evaluated. The FFS was developed with different concentrations of polyvinylpyrrolidone (PVP) and polyvinyl alcohol (PVA) and analyzed for physicochemical characteristics. The combination of extracts showed a superior antioxidant effect compared to the individual extracts, justifying the use of the blend. FFS prepared with 4.5% PVA, 4.5% PVP, 7.81% E. uniflora extract, and 3.90% T. majus extract was adhesive, lacked scale formation, presented good malleability, and had a suitable pH for topical application. In addition, the viscosity at rest was satisfactory for maintaining stability; water solubility was adequate; skin permeation was low; and the antimicrobial effect was superior to that of the individual extracts. Therefore, the developed FFS is promising for the differentiated treatment of skin lesions through topical application.

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“…Viscosity was determined using a Brookfield Digital viscometer (QUIMIS ® , Q860M26, Diadema, Brazil) equipped with a spindle No. 2, at 25 °C, in the range of 1 to 40 rpm [ 75 ].…”

Section: Methodsmentioning

confidence: 99%

Bioprospecting a Film-Forming System Loaded with Eugenia uniflora L. and Tropaeolum majus L. Leaf Extracts for Topical Application in Treating Skin Lesions

et al. 2023

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Experimental study on the heat transfer and pressure drop of oil-based nanofluids in laminar flow inside horizontal tubes

Florez Morales,

Cárdenas Gomez,

Amjad

et al. 2023

J Braz. Soc. Mech. Sci. Eng.

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Fresh, hardened and thermal properties of coating mortars containing mineral additions and vermiculite

Dos Santos,

Figueirêdo,

De Paiva

et al. 2023

materconstrucc

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Efforts are made to alleviate thermal problems in buildings. The use of thermal mortars for coating with vermiculite as aggregate is used for this purpose, but the use with mineral additions is still scarce, especially the rheology through squeeze-flow. Thus, it was aimed to evaluate the behavior in fresh, hardened state and in the thermal conductivity of these mortars. Mortars containing Portland cement, lime, vermiculite, sand, and additions of metakaolin or ceramic brick waste, in the proportion of 1:1:6 (Cement: Lime: Sand), were evaluated. The sand was replaced by vermiculite in 40%, and the additions added in the proportion of 20% to the cement mass, and the water content determined with the spread obtained on the consistency table. Mixtures containing 20% mineral addition and 40% vermiculite proved to be feasible, reaching minimum values according to the respective standards.

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Caracterização De Nanofluidos Para Utilização Em Compressores De Refrigeração: Determinação Da Viscosidade Dinâmica, Condutividade Térmica E Estabilidade.

Cited by 3 publications

References 0 publications

Bioprospecting a Film-Forming System Loaded with Eugenia uniflora L. and Tropaeolum majus L. Leaf Extracts for Topical Application in Treating Skin Lesions

Bioprospecting a Film-Forming System Loaded with Eugenia uniflora L. and Tropaeolum majus L. Leaf Extracts for Topical Application in Treating Skin Lesions

Experimental study on the heat transfer and pressure drop of oil-based nanofluids in laminar flow inside horizontal tubes

Fresh, hardened and thermal properties of coating mortars containing mineral additions and vermiculite

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