The Experts below are selected from a list of 222 Experts worldwide ranked by ideXlab platform
A Correa - One of the best experts on this subject based on the ideXlab platform.
-
liquid liquid equilibria of the system water acetic acid 2 Hexanone at 25 c and 35 c
Journal of Chemical & Engineering Data, 2001Co-Authors: Juan J Otero, J F Comesana, J M Correa, A CorreaAbstract:Liquid−liquid equilibria of the system water + acetic acid + 2-Hexanone at 25 °C and 35 °C were studied to evaluate 2-Hexanone as an extraction agent in aqueous solutions of acetic acid. The experimental data were fitted using the NRTL and UNIQUAC equations. Equilibrium predictions, applying the UNIFAC method, were also made with the use of liquid−liquid equilibrium specific parameters for both temperatures.
-
Liquid−Liquid Equilibria of the System Water + Acetic Acid + 2-Hexanone at 25 °C and 35 °C
Journal of Chemical & Engineering Data, 2001Co-Authors: Juan J Otero, J F Comesana, J M Correa, A CorreaAbstract:Liquid−liquid equilibria of the system water + acetic acid + 2-Hexanone at 25 °C and 35 °C were studied to evaluate 2-Hexanone as an extraction agent in aqueous solutions of acetic acid. The experimental data were fitted using the NRTL and UNIQUAC equations. Equilibrium predictions, applying the UNIFAC method, were also made with the use of liquid−liquid equilibrium specific parameters for both temperatures.
Ligia Miranda Ferreira Borges - One of the best experts on this subject based on the ideXlab platform.
-
Quantification of brown dog tick repellents, 2-Hexanone and benzaldehyde, and release from tick-resistant beagles, Canis lupus familiaris B Analytical technologies in the biomedical and life sciences
Journal of Chromatography A, 2020Co-Authors: Jaires Gomes De Oliveira Filho, Andre Lucio Franceschini Sarria, Lorena Lopes Ferreira, John C Caulfield, Stephen J Powers, J A Pickett, Michael A Birkett, Adalberto A. Pérez De León, Ligia Miranda Ferreira BorgesAbstract:We have recently shown that repellency of the tick Rhipicephalus sanguineus sensu lato by the tick resistant dog breed, the beagle, is mediated by volatile organic compounds (VOCs) 2-Hexanone and benzaldehyde present in beagle odour. Ectoparasite location of animal hosts is affected by variation in these odour components and their ratios. The aim of this study was to quantify the release rate, and the ratio, of 2-Hexanone and benzaldehyde from beagles. The odour of three beagles was collected, for four days, over one week (day 0, day 1, day 4 and day 7). The compounds were identified using coupled high-resolution gas chromatography–mass spectrometry (GC–MS), and authentic standards of compounds were used to generate external calibration curves for quantification. Both compounds were found in all dogs on all days. The amount of benzaldehyde was always higher than that of 2-Hexanone and so their ratio varied from unity, on average (over time) being 3.128±0.365, 1.902±0.390, 1.670±0.671ngmL⁻¹ for beagle 1, 2 and 3, respectively. There was no significant (p
-
quantification of brown dog tick repellents 2 Hexanone and benzaldehyde and release from tick resistant beagles canis lupus familiaris
Journal of Chromatography B, 2016Co-Authors: Jaires Gomes De Oliveira Filho, Andre Lucio Franceschini Sarria, Lorena Lopes Ferreira, John C Caulfield, Stephen J Powers, J A Pickett, Adalberto Perez A De Leon, Michael A Birkett, Ligia Miranda Ferreira BorgesAbstract:We have recently shown that repellency of the tick Rhipicephalus sanguineus sensu lato by the tick resistant dog breed, the beagle, is mediated by volatile organic compounds (VOCs) 2-Hexanone and benzaldehyde present in beagle odour. Ectoparasite location of animal hosts is affected by variation in these odour components and their ratios. The aim of this study was to quantify the release rate, and the ratio, of 2-Hexanone and benzaldehyde from beagles. The odour of three beagles was collected, for four days, over one week (day 0, day 1, day 4 and day 7). The compounds were identified using coupled high-resolution gas chromatography–mass spectrometry (GC–MS), and authentic standards of compounds were used to generate external calibration curves for quantification. Both compounds were found in all dogs on all days. The amount of benzaldehyde was always higher than that of 2-Hexanone and so their ratio varied from unity, on average (over time) being 3.128 ± 0.365, 1.902 ± 0.390, 1.670 ± 0.671 ng mL−1 for beagle 1, 2 and 3, respectively. There was no significant (p < 0.05, F-test) effect of time. The overall mean was 2.233 ± 0.387 ng mL−1. These results further previous findings by documenting the presence of 2-Hexanone and benzaldehyde in beagle odour samples covering a 7-day period. This knowledge enables development of repellents to protect dogs from R. sanguineus s. l. infestation.
Joanna łachwa - One of the best experts on this subject based on the ideXlab platform.
-
thermodynamics of binary mixtures of n methyl 2 pyrrolidinone and ketone experimental results and modelling of the solid liquid equilibrium and the vapour liquid equilibrium the modified unifac do model characterization
The Journal of Chemical Thermodynamics, 2005Co-Authors: Urszula Domanska, Joanna łachwaAbstract:Abstract The (solid + liquid) equilibrium (SLE) of eight binary systems containing N-methyl-2-pyrrolidinone (NMP) with (2-propanone, or 2-butanone, or 2-pentanone, or 3-pentanone, or cyclopentanone, or 2-Hexanone, or 4-methyl-2-pentanone, or 3-heptanone) were carried out by using a dynamic method from T = 200 K to the melting point of the NMP. The isothermal (vapour + liquid) equilibrium data (VLE) have been measured for three binary mixtures of NMP with 2-propanone, 3-pentanone and 2-Hexanone at pressure range from p = 0 kPa to p = 115 kPa. Data were obtained at the temperature T = 333.15 K for the first system and at T = 373.15 K for the second two systems. The experimental results of SLE have been correlated using the binary parameters Wilson, UNIQUAC ASM and two modified NRTL equations. The root-mean-square deviations of the solubility temperatures for all the calculated values vary from (0.32 K to 0.68 K) and depend on the particular equation used. The data of VLE were correlated with one to three parameters in the Redlich–Kister expansion. Binary mixtures of NMP with (2-propanone, or 2-butanone, or 2-pentanone, or 3-pentanone, or cyclopentanone, or 2-Hexanone, or 4-methyl-2-pentanone, or 3-heptanone) have been investigated in the framework of the modified UNIFAC (Do) model. The reported new interaction parameters for NMP-group (c-CONCH3) and carbonyl group ( C O) let the model consistently described a set of thermodynamic properties, including (solid + liquid) equilibrium, (vapour + liquid) equilibrium, excess Gibbs energy and molar excess enthalpies of mixing. Our experimental and literature data of binary mixtures containing NMP and ketones were compared with the results of prediction with the modified UNIFAC (Do) model.
Juan J Otero - One of the best experts on this subject based on the ideXlab platform.
-
liquid liquid equilibria of the system water acetic acid 2 Hexanone at 25 c and 35 c
Journal of Chemical & Engineering Data, 2001Co-Authors: Juan J Otero, J F Comesana, J M Correa, A CorreaAbstract:Liquid−liquid equilibria of the system water + acetic acid + 2-Hexanone at 25 °C and 35 °C were studied to evaluate 2-Hexanone as an extraction agent in aqueous solutions of acetic acid. The experimental data were fitted using the NRTL and UNIQUAC equations. Equilibrium predictions, applying the UNIFAC method, were also made with the use of liquid−liquid equilibrium specific parameters for both temperatures.
-
Liquid−Liquid Equilibria of the System Water + Acetic Acid + 2-Hexanone at 25 °C and 35 °C
Journal of Chemical & Engineering Data, 2001Co-Authors: Juan J Otero, J F Comesana, J M Correa, A CorreaAbstract:Liquid−liquid equilibria of the system water + acetic acid + 2-Hexanone at 25 °C and 35 °C were studied to evaluate 2-Hexanone as an extraction agent in aqueous solutions of acetic acid. The experimental data were fitted using the NRTL and UNIQUAC equations. Equilibrium predictions, applying the UNIFAC method, were also made with the use of liquid−liquid equilibrium specific parameters for both temperatures.
Jaires Gomes De Oliveira Filho - One of the best experts on this subject based on the ideXlab platform.
-
Quantification of brown dog tick repellents, 2-Hexanone and benzaldehyde, and release from tick-resistant beagles, Canis lupus familiaris B Analytical technologies in the biomedical and life sciences
Journal of Chromatography A, 2020Co-Authors: Jaires Gomes De Oliveira Filho, Andre Lucio Franceschini Sarria, Lorena Lopes Ferreira, John C Caulfield, Stephen J Powers, J A Pickett, Michael A Birkett, Adalberto A. Pérez De León, Ligia Miranda Ferreira BorgesAbstract:We have recently shown that repellency of the tick Rhipicephalus sanguineus sensu lato by the tick resistant dog breed, the beagle, is mediated by volatile organic compounds (VOCs) 2-Hexanone and benzaldehyde present in beagle odour. Ectoparasite location of animal hosts is affected by variation in these odour components and their ratios. The aim of this study was to quantify the release rate, and the ratio, of 2-Hexanone and benzaldehyde from beagles. The odour of three beagles was collected, for four days, over one week (day 0, day 1, day 4 and day 7). The compounds were identified using coupled high-resolution gas chromatography–mass spectrometry (GC–MS), and authentic standards of compounds were used to generate external calibration curves for quantification. Both compounds were found in all dogs on all days. The amount of benzaldehyde was always higher than that of 2-Hexanone and so their ratio varied from unity, on average (over time) being 3.128±0.365, 1.902±0.390, 1.670±0.671ngmL⁻¹ for beagle 1, 2 and 3, respectively. There was no significant (p
-
quantification of brown dog tick repellents 2 Hexanone and benzaldehyde and release from tick resistant beagles canis lupus familiaris
Journal of Chromatography B, 2016Co-Authors: Jaires Gomes De Oliveira Filho, Andre Lucio Franceschini Sarria, Lorena Lopes Ferreira, John C Caulfield, Stephen J Powers, J A Pickett, Adalberto Perez A De Leon, Michael A Birkett, Ligia Miranda Ferreira BorgesAbstract:We have recently shown that repellency of the tick Rhipicephalus sanguineus sensu lato by the tick resistant dog breed, the beagle, is mediated by volatile organic compounds (VOCs) 2-Hexanone and benzaldehyde present in beagle odour. Ectoparasite location of animal hosts is affected by variation in these odour components and their ratios. The aim of this study was to quantify the release rate, and the ratio, of 2-Hexanone and benzaldehyde from beagles. The odour of three beagles was collected, for four days, over one week (day 0, day 1, day 4 and day 7). The compounds were identified using coupled high-resolution gas chromatography–mass spectrometry (GC–MS), and authentic standards of compounds were used to generate external calibration curves for quantification. Both compounds were found in all dogs on all days. The amount of benzaldehyde was always higher than that of 2-Hexanone and so their ratio varied from unity, on average (over time) being 3.128 ± 0.365, 1.902 ± 0.390, 1.670 ± 0.671 ng mL−1 for beagle 1, 2 and 3, respectively. There was no significant (p < 0.05, F-test) effect of time. The overall mean was 2.233 ± 0.387 ng mL−1. These results further previous findings by documenting the presence of 2-Hexanone and benzaldehyde in beagle odour samples covering a 7-day period. This knowledge enables development of repellents to protect dogs from R. sanguineus s. l. infestation.
