Search results for "Opera"
showing 10 items of 8665 documents
Apunts de teoria de Matemàtiques II (2013/2014)
2014
Apunts de teoria de l'assignatura Matemàtiques II dins dels estudis de grau en Economia, en administració i direcció d'empreses i en finances i comptabilitat. Notes of Theory of the subject "Matemàtiques II", in the studies of degree in Economics, degree in business administration and degree in finance and accounting. Aquest document substitueix al del mateix nom del curs 2011/2012 perquè conté algunes correccions d'errades. Aquest material ha rebut un dels incentius de la convocatòria 2011 per a la qualitat en l’elaboració de materials docents del Servei de Política Lingüística de la Universitat de València, servei que també ha revisat lingüísticament el text.
Teories actuals sobre societat i educació i arguments sobre l'educació per a la cooperació
2013
La justificació d’una educació per a la cooperació o la crítica de la seua possibilitat han d’estar ubicades en el marc de les teories generals sobre educació i societat, i naturalment d’aquelles que són més recents i importants. Per això, aquest text es divideix en cinc epígrafs. En els tres primers es comenten les teories sobre educació i societat. L’epígraf 1r se centra en les teories que focalitzen el paper de l’escola en la reproducció de les desigualtats; l’epígraf 2n tracta d'aquelles altres teories que van més enllà, tot considerant els processos biogràfics dels individus i l’epígraf 3r aborda dues teories que són, per dir-ho així, més radicals encara. Els dos últims epígrafs se cen…
Cooperación, comunicación y sociedad: escenarios europeos y latinoamericanos
2012
Como resultado de los debates y reflexiones generados en el marco de la XV edición de la Cátedra Europa surge este libro, en el que se recopilan algunos de los temas tratados en el marco de este evento por destacados investigadores de diferentes instituciones de Colombia y Europa, quienes nos permiten acercarnos transversalmente a interesantes temas que hoy siguen estando en las primeras líneas de debate actual en nuestras instituciones y sociedades. El espíritu que representa este libro, la integración y el trabajo colaborativo para acercarnos a diferentes perspectivas, lo cual cobra mucha importancia en un mundo cada vez más convulso, como resultado del recrudecimiento de la crisis que ho…
Orientaciones para la redición de cuentas en materia de cooperación internacional para el desarrollo para entidades locales de la Comunitat Valenciana
2015
El documento consiste en una guia con orientaciones para favorecer la rendición de cuentas en materia de cooperación para el desarrollo para entidades sociales e instituciones en la Comunitat Valenciana.
Separation of the azeotropic mixture 2-propanol + water employing different imidazolium ionic liquids as solvents
2020
Abstract The liquid-liquid equilibria of the ternary systems water (1) + 2-propanol (2) + [emim][Tf2N] (3) and water (1) + 2-propanol (2) + [hmim][Tf2N] (3) at 283.2, 303.2 and 323.2 K and atmospheric pressure were investigated, in order to achieve a better knowledge of the ternary mixture behaviour. The capability of [emim][Tf2N] and [hmim][Tf2N] as solvents in the separation of the azeotropic mixture water + 2-propanol was studied through the distribution coefficient and selectivity, and compared with the results obtained with other ionic liquids in the same azeotropic mixture studied before by our research group. The thermodynamic parameters of both ternary mixtures were calculated by th…
Phase equilibria for the ternary systems ethanol, water+ethylene glycol or+glycerol at 101.3kPa
2013
Abstract Two solvents, ethylene glycol and glycerol, are proposed as possible entrainers for the extractive distillation of the binary azeotropic mixture formed by ethanol and water. In this way, consistent isobaric vapour–liquid equilibrium data at 101.3 kPa were measured for the ternary systems ethanol + water + ethylene glycol and ethanol + water + glycerol. The data were correlated by local compositions models Wilson, NRTL and UNIQUAC. Parameters of these models were later employed to evaluate ability of the candidates to break the original azeotrope. The obtained results led to consider the ethylene glycol and the glycerol as valid entrainers for the extractive distillation process of …
Study of the capability of 1-decyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ionic liquid as solvent in the separation of water from 1-pr…
2020
Abstract After the good behavior of different 1-alkyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ionic liquids (ILs) used as solvents in the separation of 1-propanol and 2-propanol from water, liquid-liquid equilibria data was measured from a system formed by a ternary mixture of water, 1-propanol or 2-propanol and 1-decyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([dmim][Tf2N]) at 283.2, 303.2 and 323.2 K and atmospheric pressure. The non-random two-liquid (NRTL) and universal quasichemical (UNIQUAC) models were employed to obtain the thermodynamic parameters of both ternary mixtures, with good results in all cases. Finally, the capability of [dmim][Tf2N] to separate…
Isobaric vapor–liquid equilibrium for binary and ternary mixtures of 2-methyl-2-propanol+methyl 1,1-dimethylpropyl ether+2,2,4-trimethylpentane
2000
Abstract New consistent vapor–liquid equilibrium (VLE) data for the binary system methyl 1,1-dimethylpropyl ether (TAME)+2,2,4-trimethylpentane (isooctane) and the ternary system 2-methyl-2-propanol (TBA)+methyl 1,1-dimethylpropyl ether (TAME)+2,2,4-trimethylpentane (isooctane) are reported at 101.3 kPa. In the binary system, the results indicate a positive deviation from ideality and no azeotrope is present. The ternary system presents a saddle point azeotrope that can be predicted from binary data. The activity coefficients and boiling points of the solutions were correlated with their composition by Wilson, UNIQUAC and NRTL equations.
Liquid–Liquid Equilibria of Water + Ethanol + 1-Butyl-3-methylimidazolium Bis(trifluoromethanesulfonyl)imide Ternary System: Measurements and Correla…
2015
In this work authors present the experimental liquid–liquid equilibria (LLE) data of water + ethanol + 1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide ([bmim][Tf2N]) system at different temperatures. The LLE of the system was obtained in the temperature range from 283.2 to 323.2 K. The nonrandom two liquid (NRTL) and universal quasichemical (UNIQUAC) models were used to correlate ternary systems. The equilibrium compositions were successfully correlated by the interaction parameters from both models, however UNIQUAC gave a more accurate correlation. Finally, a study about the solvent capability of ionic liquid was made in order to evaluate the possibility of separating the mi…
Isobaric vapor–liquid equilibria for binary and ternary mixtures with cyclohexane, cyclohexene, and morpholine at 100kPa
2010
Abstract Vapor–liquid equilibria (VLE) data at 100 kPa have been determinated for the ternary system cyclohexane + cyclohexene + morpholine and two constituent binary systems cyclohexane + morpholine and cyclohexene + morpholine. The thermodynamic consistency of experimental data has been verified. Both binary systems deviate moderately from ideality without the presence of an azeotrope. The VLE data have been well correlated using local composition models (Wilson, NRTL and UNIQUAC) and have been also predicted with the original UNIFAC.