Results 11 to 20 of about 42,131 (131)
Journal of Chemistry, Volume 2015, Issue 1, 2015., 2015 Activated carbons from shell eucalyptus (Eucalyptus globulus) were prepared by chemical activation through impregnation with solutions of two activators: sulfuric acid and sodium hydroxide, the surface areas for activated carbons with base were 780 and 670 m2 g−1 and the solids activated with acid were 150 and 80 m2 g−1.
Nelson Giovanny Rincón-Silva +3 more
wiley +1 more source
Calorimetric Study of Mesoporous SBA‐15 Modified for Controlled Valproic Acid Delivery
Journal of Chemistry, Volume 2013, Issue 1, 2013., 2013 SBA‐15 ordered mesoporous silica functionalized with (3‐aminopropyl)triethoxysilane (APTES) was used as the carrier for anticonvulsant drug 2‐propylpentanoic acid (valproic acid). The surface of SBA‐15 containing free silanol groups was modified with 3‐aminopropyltriethoxysilane via postsynthetic reaction.
Liliana Giraldo +2 more
wiley +1 more source
The Scientific World Journal, Volume 2012, Issue 1, 2012., 2012 Industrial wastes may produce leachates that can contaminate the aquatic ecosystem. Toxicity testing in acute and chronic levels is essential to assess environmental risks from the soluble fractions of these wastes, since only chemical analysis may not be adequate to classify the hazard of an industrial waste. In this study, ten samples of solid wastes
Letícia Flohr +3 more
wiley +1 more source
Agroindustrial Science, 2012 Se investigó el efecto sinérgico de tres solutos (sacarosa, sacarina y sugar light) en distintas combinaciones de soluciones a una concentración de 30 °Brix, sobre la humedad, ganancia de sólidos solubles y aceptabilidad general en términos de sabor y ...
Dino Rossi +5 more
doaj +1 more source
Heavy Metal Ions Adsorption from Wastewater Using Activated Carbon from Orange Peel
Journal of Chemistry, Volume 9, Issue 2, Page 926-937, 2012., 2012 Activated carbon obtained from orange peel (ACOP) was synthesized and used for the removal of heavy metal ions (Cr, Cd, and Co) from aqueous solutions. Two different adsorption models were used for analyzing data. Adsorption capacities were determined: copper ions exhibit the greatest adsorption on activated carbon orange peel because of its size and ...
Juan Carlos Moreno-Piraján +1 more
wiley +1 more source
Thermodynamic and Calorimetric Study of Acetylsalicylic Acid (Aspirin) and Ibuprofen
Journal of Chemistry, Volume 8, Issue 3, Page 1298-1308, 2011., 2011 Enthalpies of solution and dilution of aqueous solutions of sodium acetylsalicylic acid salt and ibuprofen salt were measured with an isoperibolic calorimeter at 293.15 K, 298.15 K, 303.15 K, 308.15 K and 318.15 K. The concentration of the electrolyte was restricted to the solubility of the salt at various temperatures and did not exceed 0.035–0.057 ...
Juan Carlos Moreno-Piraján +2 more
wiley +1 more source
On the Inhibition of the Reaction Between Anodic Aluminum Oxide and Water
Active and Passive Electronic Components, Volume 6, Issue 2, Page 63-66, 1980., 1979 The reaction between anodic aluminum oxide and several passivating solutions of citric acid and ammonium dihydrogen phosphate (ADP) is studied by capacitance measurements. In addition, the passivating effect of the above solutions has been evaluated by the reaction of the oxide with pure boiling water and subsequent anodization.
J. M. Sanz +2 more
wiley +1 more source
Revista Tecnológica, 2014 El presente estudio se realizó con el finalidad de conocer el grado de asociación entre las variables fisicoquímicas de láminas de mango (Manguifera indica L.) fortificadas con cloruro de calcio (CaCl2) mediante deshidratación osmótica con pulsos de ...
Richard Alejandro Gómez
doaj +4 more sources
Pastos y Forrajes, 2020 Objetivo: Evaluar la concentración de sólidos solubles en tres especies arbustivas forrajeras con diferentes edades, en Pasto, Nariño-Colombia. Materiales y Métodos: Se tomaron mediciones en Tithonia diversifolia (Hemsl.) Gray, Sambucus nigra L.
María Fernanda Urbano-Estrada +2 more
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