Results 81 to 90 of about 91,095 (298)

Annatto‐Derived Carotenoids (Bixin and Norbixin) As Biodiesel Antioxidants: Characterization and Effects on Oxidative Stability (Rancimat and PetroOXY)

Journal of the American Oil Chemists' Society, EarlyView.
Annatto‐derived bixin and norbixin were characterized and evaluated as natural antioxidants for soybean biodiesel. Their antioxidant performance and effects on oxidative stability were assessed using DPPH, Rancimat, and PetroOXY methods. ABSTRACT The increasing use of eco‐friendly fuels is increasing the production of biodiesel but soybean biodiesel is
Marco Aurélio da Silva Coutinho, Edmilson Miranda de Moura, Carla Verônica Rodarte de Moura, Leanne Silva de Sousa, Vicente Galber Freitas Viana   +4 more
wiley   +1 more source

Formación intramolecular de enlaces C-C a través de radicales libres tris(trimetil silil) silano. I etapa

, 1996
IP 1106-05-002-92(trimetilsilil) sililo / Luz Marina Jaramillo, Jaime Martin F.-'- en: Congreso Latinoamericano de Quimica (21;PONENCIA(S) EN CONGRESO: Ciclaciones de sistemas 1,6-eninos promovidas porradicales libres tris;: 1994 jul : 31 aug : 5 ...
Gómez Fernández, Fernando José, Restrepo Sánchez, Nora   +1 more
core   +1 more source

Cholesterol Sulfate in Biological Membranes: A Biophysical Study in Cholesterol-Poor and Cholesterol-Rich Biomimetic Models

Membranes
As a surface-located molecule in biological membranes, cholesterol sulphate (CholS) plays a major role in membrane-driven cell–cell processes and events including platelet-cell adhesion, T-cell receptor signalling, sperm–egg interaction, membrane fusion,
Ana Reis, Maria João Sarmento, Mariana Ferreira, Paula Gameiro, Victor de Freitas   +4 more
doaj   +1 more source

Potassium hydrogenphthalate as molecule model for adsorption studies on TiO2

, 2002
The aim of the work was to use the potassium hydrogenphthalate as molecule model for adsorption studies on TiO2. The results of adsorption of the hydrogenphthalate on TiO2 were fitted to the models proposed by Langmuir and Freundlich, but the model of ...
Florentino, Ariovaldo de Oliveira [UNESP], Bozano, Dorotéia de Fátima [UNESP], Costa Jr., Ciniro [UNESP], Valente, José Pedro Serra [UNESP]   +3 more
core  

Liquid–Liquid Equilibrium Data for Refined Olive Pomace Oil + Oleic Acid + Ethanol + Water Systems: Application to Solvent Deacidification

Journal of the American Oil Chemists' Society, EarlyView.
ABSTRACT This study presents the first experimental liquid–liquid equilibrium (LLE) data for quaternary systems composed of refined olive pomace oil, oleic acid, ethanol, and water at 303.15 K. These data are essential for the design and optimization of solvent‐based deacidification processes, particularly for oils with high free fatty acid (FFA ...
Jacqueline Mansano Ortega, Andresa Feihrmann, Guilherme Duenhas Machado, Lucio Cardozo‐Filho, Francisco Adrian Sánchez, Vladimir Ferreira Cabral   +5 more
wiley   +1 more source

Elementos de quimica-theorica

, 2021
Procede de la Biblioteca de la Facultad de Farmacia de ...
openaire   +1 more source

Solution infrared spectroscopy investigation of copper (II) azide-complexes

, 1996
The structure of the two azide-complexes, [Cu(N3)2(N,N-diEten)]2 and [Cu(N3)2(tmeen)]2, N,N-diEten= N,N- diethylethylenediamine; tmeen= N,N,N',N'- tetramethyethylenediamine in solutions of acetonitrile, acetone, tetrahydrofuran, chloroform and ...
Mauro, Antonio Eduardo [UNESP], De Lucca Neto, Vicente Alexandre [UNESP], Sargentelli, Vagner   +2 more
core  

Development and Validation of a Cellulose‐Coated Stir Bar Sorptive Extraction Method for a Simple, Environmentally Friendly Approach to Measuring Free Glycerol in Biodiesel

Journal of the American Oil Chemists' Society, EarlyView.
Preparation of a highly porous cellulose‐coated stir bar for the selective, environmentally friendly extraction of free glycerol from biodiesel using the SBSE method, followed by HPLC‐DAD analysis of the extract after derivatization with benzoyl chloride.
Caroline Lopes da Silva, Maria Aparecida Barros, Antônio Carlos Ferreira Batista, Anizio Marcio de Faria   +3 more
wiley   +1 more source

Thermal behaviour studies of solid state compounds of cinnamylidenepyruvate with trivalent lanthanides and yttrium (III) in an atmosphere of CO2

, 2002
Solid state cinnamylidenepyruvate of trivalent lanthanides (except for promethium) and yttrium, were prepared. Thermogravimetry, derivative thermogravimetry (TG, DTG), differential scanning calorimetry (DSC), X-ray diffraction powder patterns and ...
Ionashiro, Massao [UNESP], Melios, Cristo Bladimiros [UNESP], Fertonani, Fernando Luís [UNESP], De Oliveira, José Dilson Silva   +3 more
core  

Small‐Angle X‐Ray Scattering from Hydrating Tricalcium Siliate

, 1984
The small‐angle X‐ray scattering technique was used to study the evolution of the structure of hydrated tricalcium silicate at room temperature. The changes in specific area of the associated porosity and the evolution of density fluctuations in the ...
VOLLET, D. [UNESP], CRAIEVICH, A., REGOURD, M.   +2 more
core   +1 more source