Documents disponibles écrits par cet auteur

Control of product distribution of fischer – tropsch synthesis with a novel rotating packed - bed reactor / Jian-feng Chen in Industrial & engineering chemistry research, Vol. 51 N° 25 (Juin 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 25 (Juin 2012) . - pp. 8700-8703 Titre : Control of product distribution of fischer – tropsch synthesis with a novel rotating packed - bed reactor : From diesel to light olefin Type de document : texte imprimé Auteurs : Jian-feng Chen, Auteur ; Yi Liu, Auteur ; Zhang, Yi, Auteur Année de publication : 2012 Article en page(s) : pp. 8700-8703 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Fixed  bed  reactor  Fischer  Tropsch  synthesis Résumé : A rotating packed-bed (RPB) reactor has been first applied to the Fischer―Tropsch synthesis (FTS) reaction. The main products of the FTS can be selectively formed by choosing the optimum high gravity level of the RPB reactor, which has opened a door to tailor the product distribution of FTS. The high selectivity of light olefins in RPB reactor provides a novel pathway to directly and effectively form light olefins from syngas, syngas to olefin (STO), which would avoid low-efficiency methanol synthesis and methanol-to-olefin (MTO) process. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26066798 [article] Control of product distribution of fischer – tropsch synthesis with a novel rotating packed - bed reactor : From diesel to light olefin [texte imprimé] / Jian-feng Chen, Auteur ; Yi Liu, Auteur ; Zhang, Yi, Auteur . - 2012 . - pp. 8700-8703. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 25 (Juin 2012) . - pp. 8700-8703 Mots-clés : Fixed  bed  reactor  Fischer  Tropsch  synthesis Résumé : A rotating packed-bed (RPB) reactor has been first applied to the Fischer―Tropsch synthesis (FTS) reaction. The main products of the FTS can be selectively formed by choosing the optimum high gravity level of the RPB reactor, which has opened a door to tailor the product distribution of FTS. The high selectivity of light olefins in RPB reactor provides a novel pathway to directly and effectively form light olefins from syngas, syngas to olefin (STO), which would avoid low-efficiency methanol synthesis and methanol-to-olefin (MTO) process. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26066798

Experimental study of hydrocyclone flow field with different feed concentration / YanHong Zhang in Industrial & engineering chemistry research, Vol. 50 N° 13 (Juillet 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 13 (Juillet 2011) . - pp. 8176-8184 Titre : Experimental study of hydrocyclone flow field with different feed concentration Type de document : texte imprimé Auteurs : YanHong Zhang, Auteur ; Peng Qian, Auteur ; Yi Liu, Auteur Année de publication : 2011 Article en page(s) : pp. 8176-8184 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Flow  field  Hydrocyclone Résumé : The influence of feed concentration on the solid/liquid two-phase flow in a mini-hydrocyclone was studied. A phase doppler particle analyzer was used to measure the two-phase flow pattern in a 25 mm hydrocyclone at three different feed concentrations (300 mg/kg (0.136% (v/v)), 800 mg/kg (0.364% (v/v)) and 1200 mg/kg (0.545% (v/v)). The measurements show that the feed concentration has remarkable influence on the velocities in a hydrocyclone. A higher concentration of solid particles leads to lower axial velocities and can suppress the turbulence of the liquid phase in the inner helical flow; in the outer helical flow, however, the influence was complex. In planes in eddy flow, the downward flow of the liquid phase was increased by a higher concentration of particles; at same time, the dimension of circular flow was also decreasing. In the pyramidal zone, however, the higher feed concentration corresponds to lower axial velocities at the wall region. In the whole experimental zone, the particles lead to the decreasing of tangential velocities. The presence of particles has little influence on the basic flow structure, but changes the size of the eddy flow in the cylindrical section. The correspondence between the higher feed concentration and the shift of the line of zero velocity value closer to the core is also observed which probably means more inlet particles would lead to more liquid leaving the hydrocyclone through the circular flow. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24332142 [article] Experimental study of hydrocyclone flow field with different feed concentration [texte imprimé] / YanHong Zhang, Auteur ; Peng Qian, Auteur ; Yi Liu, Auteur . - 2011 . - pp. 8176-8184. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 13 (Juillet 2011) . - pp. 8176-8184 Mots-clés : Flow  field  Hydrocyclone Résumé : The influence of feed concentration on the solid/liquid two-phase flow in a mini-hydrocyclone was studied. A phase doppler particle analyzer was used to measure the two-phase flow pattern in a 25 mm hydrocyclone at three different feed concentrations (300 mg/kg (0.136% (v/v)), 800 mg/kg (0.364% (v/v)) and 1200 mg/kg (0.545% (v/v)). The measurements show that the feed concentration has remarkable influence on the velocities in a hydrocyclone. A higher concentration of solid particles leads to lower axial velocities and can suppress the turbulence of the liquid phase in the inner helical flow; in the outer helical flow, however, the influence was complex. In planes in eddy flow, the downward flow of the liquid phase was increased by a higher concentration of particles; at same time, the dimension of circular flow was also decreasing. In the pyramidal zone, however, the higher feed concentration corresponds to lower axial velocities at the wall region. In the whole experimental zone, the particles lead to the decreasing of tangential velocities. The presence of particles has little influence on the basic flow structure, but changes the size of the eddy flow in the cylindrical section. The correspondence between the higher feed concentration and the shift of the line of zero velocity value closer to the core is also observed which probably means more inlet particles would lead to more liquid leaving the hydrocyclone through the circular flow. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24332142

Governing buyer–supplier relationships through transactional and relational mechanisms / Yi Liu in Journal of operations management, Vol. 27 N° 4 (Août 2009) 

Public ISBD [article]  in Journal of operations management > Vol. 27 N° 4 (Août 2009) . - pp. 294–309 Titre : Governing buyer–supplier relationships through transactional and relational mechanisms : Evidence from China Type de document : texte imprimé Auteurs : Yi Liu, Auteur ; Yadong Luo, Auteur ; Liu, Ting, Auteur Année de publication : 2009 Article en page(s) : pp. 294–309 Note générale : Génie Industriel Langues : Anglais (eng) Mots-clés : Supply  chain  management  Buyer–supplier  relationship  Emerging  market Résumé : Building on economic and social exchange theories, this study investigates the different roles transactional and relational mechanisms have in hindering opportunism and improving relationship performance in an emerging economy. Our study applied to manufacturer–distributor dyads in China and used matched survey data (225 paired sample firms) to test our hypotheses. Our hierarchical multivariate regression and semipartial correlation analyses suggest that transactional mechanisms are more effective in restraining opportunism while relational mechanisms are more powerful in improving relationship performance. This performance is improved more significantly when both contracts and relational norms are used jointly than when used separately. Likewise, opportunism is curbed more effectively when both contracts and trust are used jointly than when used individually. DEWEY : 658.57 ISSN : 0272-6963 En ligne : http://www.sciencedirect.com/science/article/pii/S027269630800065X [article] Governing buyer–supplier relationships through transactional and relational mechanisms : Evidence from China [texte imprimé] / Yi Liu, Auteur ; Yadong Luo, Auteur ; Liu, Ting, Auteur . - 2009 . - pp. 294–309. Génie Industriel Langues : Anglais (eng) in Journal of operations management > Vol. 27 N° 4 (Août 2009) . - pp. 294–309 Mots-clés : Supply  chain  management  Buyer–supplier  relationship  Emerging  market Résumé : Building on economic and social exchange theories, this study investigates the different roles transactional and relational mechanisms have in hindering opportunism and improving relationship performance in an emerging economy. Our study applied to manufacturer–distributor dyads in China and used matched survey data (225 paired sample firms) to test our hypotheses. Our hierarchical multivariate regression and semipartial correlation analyses suggest that transactional mechanisms are more effective in restraining opportunism while relational mechanisms are more powerful in improving relationship performance. This performance is improved more significantly when both contracts and relational norms are used jointly than when used separately. Likewise, opportunism is curbed more effectively when both contracts and trust are used jointly than when used individually. DEWEY : 658.57 ISSN : 0272-6963 En ligne : http://www.sciencedirect.com/science/article/pii/S027269630800065X

Just - in - time kernel learning with adaptive parameter selection for soft sensor modeling of batch processes / Yi Liu in Industrial & engineering chemistry research, Vol. 51 N° 11 (Mars 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 11 (Mars 2012) . - pp. 4313–4327 Titre : Just - in - time kernel learning with adaptive parameter selection for soft sensor modeling of batch processes Type de document : texte imprimé Auteurs : Yi Liu, Auteur ; Zengliang Gao, Auteur ; Ping Li, Auteur Année de publication : 2012 Article en page(s) : pp. 4313–4327 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Batch  processes Résumé : An efficient nonlinear just-in-time learning (JITL) soft sensor method for online modeling of batch processes with uneven operating durations is proposed. A recursive least-squares support vector regression (RLSSVR) approach is combined with the JITL manner to model the nonlinearity of batch processes. The similarity between the query sample and the most relevant samples, including the weight of similarity and the size of the relevant set, can be chosen using a presented cumulative similarity factor. Then, the kernel parameters of the developed JITL-RLSSVR model structure can be determined adaptively using an efficient cross-validation strategy with low computational load. The soft sensor implement algorithm for batch processes is also developed. Both the batch-to-batch similarity and variation characteristics are taken into consideration to make the modeling procedure more practical. The superiority of the proposed soft sensor approach is demonstrated by predicting the concentrations of the active biomass and recombinant protein in the streptokinase fed-batch fermentation process, compared with other existing JITL-based and global soft sensors. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie201650u [article] Just - in - time kernel learning with adaptive parameter selection for soft sensor modeling of batch processes [texte imprimé] / Yi Liu, Auteur ; Zengliang Gao, Auteur ; Ping Li, Auteur . - 2012 . - pp. 4313–4327. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 11 (Mars 2012) . - pp. 4313–4327 Mots-clés : Batch  processes Résumé : An efficient nonlinear just-in-time learning (JITL) soft sensor method for online modeling of batch processes with uneven operating durations is proposed. A recursive least-squares support vector regression (RLSSVR) approach is combined with the JITL manner to model the nonlinearity of batch processes. The similarity between the query sample and the most relevant samples, including the weight of similarity and the size of the relevant set, can be chosen using a presented cumulative similarity factor. Then, the kernel parameters of the developed JITL-RLSSVR model structure can be determined adaptively using an efficient cross-validation strategy with low computational load. The soft sensor implement algorithm for batch processes is also developed. Both the batch-to-batch similarity and variation characteristics are taken into consideration to make the modeling procedure more practical. The superiority of the proposed soft sensor approach is demonstrated by predicting the concentrations of the active biomass and recombinant protein in the streptokinase fed-batch fermentation process, compared with other existing JITL-based and global soft sensors. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie201650u

Kapok fiber oriented polyaniline for removal of sulfonated dyes / Yian Zheng in Industrial & engineering chemistry research, Vol. 51 N° 30 (Août 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 30 (Août 2012) . - pp. 10079-10087 Titre : Kapok fiber oriented polyaniline for removal of sulfonated dyes Type de document : texte imprimé Auteurs : Yian Zheng, Auteur ; Yi Liu, Auteur ; Aiqin Wang, Auteur Année de publication : 2012 Article en page(s) : pp. 10079-10087 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Dyes Résumé : In the present work, kapok fiber oriented polyaniline (KF-O-PAN) was prepared via a facile polymerization of aniline on the surface of KF and optimized using response surface methodology based on a central composite design. Adsorption characteristics of KF-O-PAN were examined using three sulfonated dyes, that is, Congo Red (CR), Orange II (OG-II), and Orange G (OG-G), as the model adsorbates. The effects of contact time, pH, initial dye concentration, and poly(vinyl alcohol) sizing on the amount of dye adsorbed were investigated using a batch experiment. The amount of dye adsorbed in different water bodies including distilled water, tap water, well water, and lake water was compared to study further the influence of ionic strength. The results indicate that the adsorption equilibrium can be achieved within 4 h, and the monolayer adsorption capacity calculated from the Langmuir equation is 40.82, 188.7, and 192.3 mg/g for CR, OG-II, and OG-G, respectively. KF-O-PAN shows a higher amount of dye adsorbed despite the influences of ionic strength when pH < 8 except for CR, The higher desorption efficiency using NaOH solution and multiple adsorption-desorption cycles suggests the potential of KF-O-PAN for efficient removal of sulfonated dyes from aqueous solution. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26201422 [article] Kapok fiber oriented polyaniline for removal of sulfonated dyes [texte imprimé] / Yian Zheng, Auteur ; Yi Liu, Auteur ; Aiqin Wang, Auteur . - 2012 . - pp. 10079-10087. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 30 (Août 2012) . - pp. 10079-10087 Mots-clés : Dyes Résumé : In the present work, kapok fiber oriented polyaniline (KF-O-PAN) was prepared via a facile polymerization of aniline on the surface of KF and optimized using response surface methodology based on a central composite design. Adsorption characteristics of KF-O-PAN were examined using three sulfonated dyes, that is, Congo Red (CR), Orange II (OG-II), and Orange G (OG-G), as the model adsorbates. The effects of contact time, pH, initial dye concentration, and poly(vinyl alcohol) sizing on the amount of dye adsorbed were investigated using a batch experiment. The amount of dye adsorbed in different water bodies including distilled water, tap water, well water, and lake water was compared to study further the influence of ionic strength. The results indicate that the adsorption equilibrium can be achieved within 4 h, and the monolayer adsorption capacity calculated from the Langmuir equation is 40.82, 188.7, and 192.3 mg/g for CR, OG-II, and OG-G, respectively. KF-O-PAN shows a higher amount of dye adsorbed despite the influences of ionic strength when pH < 8 except for CR, The higher desorption efficiency using NaOH solution and multiple adsorption-desorption cycles suggests the potential of KF-O-PAN for efficient removal of sulfonated dyes from aqueous solution. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26201422

Learning trajectory in offshore OEM cooperation / Yuan Li in Journal of operations management, Vol. 28 N° 3 (Mai 2010) 

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Simple nonlinear predictive control strategy for chemical processes using sparse kernel learning with polynomial form / Yi Liu in Industrial & engineering chemistry research, Vol. 49 N° 17 (Septembre 1, 2010) 

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Soft chemical analyzer development using adaptive least-squares support vector regression with selective pruning and variable moving window size / Yi Liu in Industrial & engineering chemistry research, Vol. 48 N° 12 (Juin 2009) 

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