Thermal Profiles
Mostrando 1-12 de 216 artigos, teses e dissertações.
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1. Behavior of the effective heat transfer coefficient and global thermal resistance in freezing of fruit juice model solutions in cylindrical packages
Abstract In this study the effect of packing on freezing time, effective heat transfer coefficient and global thermal resistance were evaluated during the freezing of fruit juice model solution in an air blast freezer. Two configurations were arranged with 40 buckets and 15 kg of solution in each, totaling 600 kg. Thermocouples were installed to monitor the
Food Sci. Technol. Publicado em: 2020-12
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2. Chitosan Nanoparticles Loaded with Carvacrol and Carvacryl Acetate for Improved Anthelmintic Activity
Carvacrol (CV) and carvacryl acetate (CVA) are bioactive compounds that have anthelmintic action and the nanoencapsulation may be an alternative to potentialize their efficacy. The aim of this work was to nanoencapsulate CV and CVA using chitosan/gums and evaluate cytotoxicity and the anthelmintic activity. A 24 factorial experimental design was performed to
J. Braz. Chem. Soc.. Publicado em: 2020-08
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3. Methodology Development and Validation of Amphotericin B Stability by HPLC-DAD
The high worldwide consumption of antibiotics and their complex impurity profiles has drawn the attention of the scientific community to the development and validation of stability methods for these drugs. Amphotericin B is an antibiotic that is a natural fermentation product of bacterium Streptomyces nodosus, used as a broad-spectrum antifungal agent, and i
J. Braz. Chem. Soc.. Publicado em: 2020-05
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4. Fabrication of Fish Gelatin Microfibrous Mats by Solution Blow Spinning
In this work microfiber mats of Nile tilapia (Oreochromis niloticus) gelatin were successfully fabricated by using Solution Blow Spinning technique. The concentration and viscosity of fish gelatin solution, in acid acetic/water (80% v/v), were correleted to the morphology and diameter of the gelatin microfibers. It was found that increased solution viscosity
Mat. Res.. Publicado em: 30/09/2019
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5. THERMAL MODIFICATION OF SUGARCANE WASTE AND BAMBOO PARTICLES FOR THE MANUFACTURE OF PARTICLEBOARDS
RESUMO A modificação térmica de partículas de painéis constituídos de resíduos agroflorestais e industriais pode incorporar melhorias na estabilidade dimensional (variação na espessura) e reduzir a utilização de produtos químicos, que podem onerar o processo ou serem nocivos ao homem e ao meio ambiente. Assim, o objetivo da pesquisa foi avaliar o
Rev. Árvore. Publicado em: 23/09/2019
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6. Investigation of Thermal Parameters Effects on the Microstructure, Microhardness and Microsegregation of Cu-Sn alloy Directionally Solidified under Transient Heat Flow Conditions
The microstructure and mechanical properties of cast materials are strongly dependent on the thermal history during solidification process. The global casting industry has faced major challenges, i.e., customers increasingly demand completely finished cast parts as well as complexity of casting alloys are rising. Therefore, the previous knowledge the solidif
Mat. Res.. Publicado em: 19/08/2019
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7. Stability and in vivo efficiency of natural cosmetic emulsion systems with the addition of vegetable oils
The aim of the paper is to test stability and biophysical properties of hydrophilic and lipophilic emulsions with selected vegetable seed oils: Limnanthes alba, Prunus amygdalus dulcis, Cannabis sativa, Rosa rubiginosa and Hellianthus annuus. Biophysical properties of emulsions are investigated in vivo using non-invasive instrumental methods (corneometry, te
Braz. J. Pharm. Sci.. Publicado em: 29/11/2018
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8. Thermal profiles in pervious concrete during summer rain simulations
ABSTRACT Pervious concrete pavement systems may have many environmental benefits including the mitigation of heat island impacts. This mitigation is a complex combination of pervious concrete’s insulating capability and its ability to store water which may provide evaporative cooling. However, the introduction of water may also bring heat into the system,
Matéria (Rio J.). Publicado em: 18/10/2018
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9. Estabilidad térmica de aleaciones de magnesio Procesadas por Friccion-Agitación (FSP)
ABSTRACT Superplasticity is defined by an extended plastic deformation previous to fracture, generally at high temperatures. In the mode of fine structures superplasticity, grain boundary sliding is the controlling mechanism. To achieve this fine grained structure it could be used any Severe Plastic Deformation (SPD) process like Friction Stir Processing (FS
Matéria (Rio J.). Publicado em: 19/07/2018
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10. Optimización del proceso RSW para acero DP 1000
ABSTRACT In recent times new materials have been introduced in automobiles construction in order to reduce their weight and consequently fuel consumption and emissions level. Among them are Dual Phase (DP) steels, constituted by a ferritic matrix with martensite islands. Resistance Spot Welding (RSW) is the most commonly used welding process in the automotiv
Matéria (Rio J.). Publicado em: 19/07/2018
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11. Experimental Investigation of Ternary Al-Si-Cu Alloy Solidified with Unsteady-State Heat Flow Conditions
Ternary Al-9.0wt%Si-4.0wt%Cu alloy was solidified in a vertical directional solidification system under unsteady-state heat flow conditions. The resulting dendritic morphology and microsegregation were investigated. A more detailed analysis was dedicated to the microsegregation phenomena where a multielement interaction was observed. The solidification param
Mat. Res.. Publicado em: 12/03/2018
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12. Effects of Local Heat Input Conditions on the Thermophysical Properties of Super Duplex Stainless Steels (SDSS)
The properties of the super duplex stainless steels (SDSS) are strongly affected by the thermal history imposed by welding procedures. The controlled dual phase microstructure (ferrite and austenite) guarantee excellent mechanical properties such as mechanical strength and corrosion resistance, in addition to small thermal expansion coefficient and high ther
Mat. Res.. Publicado em: 11/01/2018