A Validation of the Family Involvement Questionnaire-High School Version

The purpose of this study was to validate the Family Involvement Questionnaire (FIQ) for use in high school settings (9th-12th grade). After the FIQ was redesigned for use in the high school setting, 517 parents completed the questionnaire online. Internal consistency for the 40-item questionnaire was high (alpha = 0.93). A confirmatory factor analysis failed to substantiate the FIQ-HS to the elementary version from which it was adapted. However, an exploratory factor analysis yielded three factors consistent with the FIQ-E. Family demographics were compared to participants\u27 responses, and significant effects for students\u27 school and special education status were found

Physicochemical Properties of Chemical Pollutants Available in Food Contact Materials (FCM)

Health and welfare of population are priority reasons to study the toxic effects of chemical pollutants. These effects can directly produce deterioration of health or can cause less healthful environment toxicity and restricting food production. Thereby, preventing such a consequence is important for human health risk assessment. In recent times, the use of recycled materials for packaging has undeniably been intensified. Nevertheless, recycling systems could not effectively eliminate the potential effect of chemical pollutants (alkyl phenol, phthalates, aldehydes, etc.) existent in such packages. The migration process and/or the ability of these pollutants to be absorbed into the recycled material, subsequently released by the packaging material, and then trapped by the matrices they contain, has become a potential source of exposure to consumers. This process is controlled by the nature of the packaging, time, temperature, and the physicochemical properties of the contaminant. The literature suffers from a lack of data related to the physicochemical (aqueous solubility, vapor pressure, Henry’s constant, etc...) of these contaminants. In this work, we are going to describe the experimental devices used for aqueous solubility, vapor pressure and octanol/water partition coefficient determination

Extraction, analyse et caractérisation des Acides Naphténiques contenus dans divers bruts pétroliers

Ce présent travail s'inscrit dans le cadre d'un contrat de recherche avec la société TOTAL. Il concerne l'étude des acides dits "naphténiques" contenus dans divers bruts pétroliers. Les acides naphténiques proviennent de la biodégradation des hydrocarbures constituant les pétroles. Ils sont non seulement responsables de mauvais rendements au cours des exploitations pétrolières mais sont également facteurs de corrosion des lignes de transfert et de désactivation des catalyseurs dans les raffineries. Leur présence dans les fluides pétroliers affectant aussi bien la production que les opérations de raffinage, leur incidence économique est dans certains cas considérable. L'étude physico-chimique de ces acides est nécessaire afin de comprendre la différence de comportement des bruts lors de la production pétrolière. Ce mémoire décrit la mise au point d'une nouvelle méthode d'extraction en phase solide (SPE) des acides naphténiques. La détermination des teneurs en acides des bruts a été effectuée par CPG grâce à la méthode d'étalonnage interne. Le rendement d'extraction a été déterminé par le biais de mesure des indices d'acidité par la méthode standard ASTM D664-95 (IP 177/96). Les acides extraits sont ensuite caractérisés par analyse élémentaire et par différentes méthodes spectroscopiques telles que : 1H RMN, 13C RMN et l'Infrarouge. Les noms des bruts pétroliers étudiés ont été remplacés par X 1, X 2, X 3 et X 4 suite à la demande de la Société TOTALLYON1-BU.Sciences (692662101) / SudocSudocFranceF

Réalisation d'un appareil d'analyse en ligne pour l'étude des équilibres liquide-vapeur (application à la récupération assistée des bitumes)

Pour optimiser la récupération de bruts pétroliers lourds, les compagnies ont recours à des techniques de récupération assistée de bitumes. Une de ces techniques "ES-SAGD" consiste en l'injection d'une coupe pétrolière. Pour évaluer la quantité à injecter, il est nécessaire d'étudier les tensions de vapeur des mélanges coupe-brut et les coefficients de partages liquide-vapeur à partir de la composition des phases. Ces données thermodynamiques servent à alimenter des modèles pour les simulations numériques de l'extraction. La première partie de ce travail est consacrée à la conception, la réalisation, l'étalonnage et la validation d'un nouvel appareil statique pour la mesure des tensions de vapeur et l'analyse en ligne des phases. La deuxième partie concerne l'étude des équilibres liquide-vapeur et la détermination de la composition de la phase liquide et vapeur des mélanges pétroliers par deux techniques : Analyse en ligne et HeadspaceLYON1-BU.Sciences (692662101) / SudocSudocFranceF

Capture of CO2 using secondary, tertiary mono and multiamine Absorption isotherms of CO2

International audienc

Isothermal vapor-liquid equilibria of binary systems containing green solvents derived from biomass: (Furfuryl alcohol + toluene), (furfuryl alcohol + ethanol), or (furfural + toluene)

International audienceThe vapor pressures of the pure components: furfuryl alcohol, furfural and toluene along with the binary mixtures (furfuryl alcohol + toluene), (furfuryl alcohol + ethanol), or (furfural + toluene) were measured by means of a static device at temperatures between 273 (or 283) and 343 (or 363) K. The data were correlated with the Antoine equation. From these data excess Gibbs functions were calculated for several constant temperatures and fitted to a fourth-order Redlich-Kister equation using the Barker's method as two systems exhibit positive deviations in GE and one negative deviations for all investigated temperatures over the whole composition range. The NRTL, UNIQUAC and Modified UNIFAC (Do) models have also been used and good results were obtained in the prediction of the total pressure and thermodynamic excess properties

CO 2 Capture Using Deep Eutectic Solvent and Amine (MEA) Solution

International audienc

Liquid–liquid equilibria of binary and ternary systems involving monoethyleneglycol, water, n-alkanes at three temperatures: 283.15, 303.15 and 333.15 K

International audienceNew solubility data of binary and ternary systems involving ethylene glycol (or MEG), water and n-alkanes (hexane, heptane, octane, nonane, undecane, dodecane and hexadecane) under atmospheric pressure at three temperatures 283.15, 303.15 and 333.15 K are reported. The reported values are original except for binary systems where some points were found in the literature for comparison. The non-random two-liquid (NRTL) were used to correlate the experimental data of the binary mixtures. The interaction parameters obtained with the experimental binary systems were used to predict the ternary systems

Solubility of carbon dioxide gas in some 2.5 M tertiary amine aqueous solutions

International audienceSolubility of carbon dioxide (CO2) acid gas in aqueous solutions in 2.5 mol/l tertiary amines, such as 2-(2-(dimethylamino) ethoxy) ethanol [DMAEOE], 3-dimethyl amino-1-propanol [DiMAP], 1,2-bis (dimethyl amino) ethane [TEMED], pyridine and methyl-4-morpholine has been measured at [313 and 353] K, and over the pressure range (0-200) kPa, using a specifically built apparatus based on the static method. The vapor pressures and the densities of these aqueous solutions, also, have been measured by a static method and picnometry, respectively. For validation of the experimental procedure, solubility of acid gas CO2 in 2.5 mol/l aqueous solutions of mono-ethanolamine (MEA) and 2-amino-2-methyl-1-propanol (AMP) has been measured at 313.15 K. The experimental solubility results are presented in the form of the partial pressure of CO2 versus the mole ratio α (mol CO2/mol amine), at each temperature. The solubility of gas CO2, in all the investigated aqueous amines, decreases with an increase of the temperature and increases with increasing partial pressure of CO2 gas at a given temperature. The values of the solubility of CO2 gas are in the following sequence: Pyridine < Methyl morpholine < DMAEOE < TEMED < DiMAP

Phase equilibrium properties of binary mixtures containing 1,3-pentanediamine (or 1,5-diamino-2-methylpentane) and water at several temperatures

International audienceThe vapor pressures of (1,3-pentanediamine + water), or (1,5-diamino-2-methylpentane + water) binary mixtures, and of pure 1,3-pentanediamine or 1,5-diamino-2-methylpentane components were measured by means of a static device at temperatures between (273 and 363) K. The data were correlated with the Antoine equation. From these data excess Gibbs functions (GE) were calculated for several constant temperatures and fitted to a three order Redlich–Kister equation using the Barker’s method. The (1,3-pentanediamine + water) or (1,5-diamino-2-methylpentane + water) binary systems exhibit negative deviations in GE for all investigated temperatures over the whole composition. Additionally, the NRTL UNIQUAC and Modified UNIFAC (Do) models have been used for the correlation or prediction of the total pressure