Browsing by Subject "Thermal analysis"
Now showing items 1-7 of 7
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Ag-rich precipitates formation in the Cu-11%Al-10%Mn-3%Ag alloy
(Elsevier B.V., 2014-12-05)The formation of Ag-rich precipitates in the Cu-11%Al-10%Mn-3%Ag alloy initially quenched from 1123 K was analyzed. the results showed that nanoprecipitates of a Cu-rich phase are produced at about 523 K. in higher ...
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Characterization and evaluation of free and nanostructured ursolic acid incorporated in cosmetic formulation using thermal analysis
(Springer, 2014-03-01)The ursolic acid (UA) increases the skin's barrier function and acts in epidermal differentiation of keratinocytes in the epidermis, promoting cell renewal. Besides the mentioned properties UA also has antioxidant, ...
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Comparative physical-chemical characterization of encapsulated lipid-based isotretinoin products assessed by particle size distribution and thermal behavior analyses
(Elsevier B.V., 2010-06-10)Isotretinoin is the drug of choice for the management of severe recalcitrant nodular acne. Nevertheless, some of its physical-chemical properties are still poorly known. Hence, the aim of our study consisted to comparatively ...
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Effect of Ag addition on phase transitions of the Cu-22.26 at.%Al-9.93 at.%Mn alloy
(Elsevier B.V., 2013-02-20)The phase transitions that occur in the Cu-22.26 at.%Al-9.93 at.%Mn and Cu-22.49 at.%Al-10.01 at.%Mn-1.53 at.%Ag alloys after slow cooling were studied using differential scanning calorimetry at different heating rates, ...
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Estudo comparativo da preparação de filmes de poliuretano comercial e sua caracterização química via análise térmica, visando sua aplicação como biomaterial
(Universidade Federal de São Paulo, 2017-03-10)Polyurethane (referred to by the acronym PUR) is a polymer comprising a chain of organic units linked by urethane bonds. This material is widely used in rigid and flexible foams, durable elastomers, high performance ...
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Stability evaluation of tocopheryl acetate and ascorbyl tetraisopalmitate in isolation and incorporated in cosmetic formulations using thermal analysis
(Universidade de São Paulo, Faculdade de Ciências Farmacêuticas, 2010-03-01)In view of the increase in the number of cosmetic preparations containing antioxidant vitamins, chiefly, due to their action in preventing the process of skin aging, there is a need to develop pre-formulation studies and ...
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Thermal behavior and decomposition kinetics of rifampicin polymorphs under isothermal and non-isothermal conditions
(Universidade de São Paulo, Faculdade de Ciências Farmacêuticas, 2010-06-01)The thermal behavior of two polymorphic forms of rifampicin was studied by DSC and TG/DTG. The thermoanalytical results clearly showed the differences between the two crystalline forms. Polymorph I was the most thermally ...
