Documents disponibles écrits par cet auteur

Do buyer cooperative actions matter under relational stress? / Chun Zhang in Journal of operations management, Vol. 27 N° 6 (Décembre 2009) 

Public ISBD [article]  in Journal of operations management > Vol. 27 N° 6 (Décembre 2009) . - pp. 479–494 Titre : Do buyer cooperative actions matter under relational stress? : Evidence from Japanese and U.S. assemblers in the U.S. automotive industry Type de document : texte imprimé Auteurs : Chun Zhang, Auteur ; John W. Henke Jr., Auteur ; David A. Griffith, Auteur Année de publication : 2010 Article en page(s) : pp. 479–494 Note générale : Génie Industriel Langues : Anglais (eng) Mots-clés : Cooperative  strategies  Supply  chain  Relational  stress  Social  exchange  theory  Automotive  industry Résumé : Buyers can create relational stress even as they work cooperatively with suppliers. This study investigates the moderating effects of relational stress on the ability of buyer-initiated cooperative actions to influence a supplier's willingness to invest in technology that will be of benefit to the buyer. Data on 2012 buying situations were collected from Tier 1 suppliers to three U.S. domestic automotive assemblers (Chrysler, Ford, and General Motors) and three Japanese transplant automotive assemblers (Honda, Nissan, and Toyota) over three consecutive years (2003–2005). The results indicate that (1) buyer-initiated cooperative actions of communication, assistance, and supplier involvement increase a supplier's willingness to invest in technology, (2) the relationship-enhancing effect of buyer assistance increases under high relational stress, while the effectiveness of buyer communication decreases, and (3) that the effect of supplier involvement is not significantly influenced by relational stress levels. Furthermore, we found that supplier relations with Japanese transplant assemblers are characterized by higher levels of cooperative actions, lower levels of relational stress, and higher levels of supplier willingness to invest in technology when compared to those of U.S. domestic assemblers. DEWEY : 658.57 ISSN : 0272-6963 En ligne : http://www.sciencedirect.com/science/article/pii/S027269630900031X [article] Do buyer cooperative actions matter under relational stress? : Evidence from Japanese and U.S. assemblers in the U.S. automotive industry [texte imprimé] / Chun Zhang, Auteur ; John W. Henke Jr., Auteur ; David A. Griffith, Auteur . - 2010 . - pp. 479–494. Génie Industriel Langues : Anglais (eng) in Journal of operations management > Vol. 27 N° 6 (Décembre 2009) . - pp. 479–494 Mots-clés : Cooperative  strategies  Supply  chain  Relational  stress  Social  exchange  theory  Automotive  industry Résumé : Buyers can create relational stress even as they work cooperatively with suppliers. This study investigates the moderating effects of relational stress on the ability of buyer-initiated cooperative actions to influence a supplier's willingness to invest in technology that will be of benefit to the buyer. Data on 2012 buying situations were collected from Tier 1 suppliers to three U.S. domestic automotive assemblers (Chrysler, Ford, and General Motors) and three Japanese transplant automotive assemblers (Honda, Nissan, and Toyota) over three consecutive years (2003–2005). The results indicate that (1) buyer-initiated cooperative actions of communication, assistance, and supplier involvement increase a supplier's willingness to invest in technology, (2) the relationship-enhancing effect of buyer assistance increases under high relational stress, while the effectiveness of buyer communication decreases, and (3) that the effect of supplier involvement is not significantly influenced by relational stress levels. Furthermore, we found that supplier relations with Japanese transplant assemblers are characterized by higher levels of cooperative actions, lower levels of relational stress, and higher levels of supplier willingness to invest in technology when compared to those of U.S. domestic assemblers. DEWEY : 658.57 ISSN : 0272-6963 En ligne : http://www.sciencedirect.com/science/article/pii/S027269630900031X

Silicalite-1 zeolite membrane reactor packed with HZSM-5 catalyst for meta-xylene isomerization / Chun Zhang in Industrial & engineering chemistry research, Vol. 48 N° 9 (Mai 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 9 (Mai 2009) . - pp. 4293–4299 Titre : Silicalite-1 zeolite membrane reactor packed with HZSM-5 catalyst for meta-xylene isomerization Type de document : texte imprimé Auteurs : Chun Zhang, Auteur ; Zhou Hong, Auteur ; Xuehong Gu, Auteur Année de publication : 2009 Article en page(s) : pp. 4293–4299 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Silicalite-1  zeolite  membrane  Para-xylene  selectivity  Meta-xylene  Isomerization Résumé : A silicalite-1/α-Al2O3 zeolite membrane with high para-xylene (PX) selectivity was tested for isomerization of meta-xylene (MX) to PX. Two HZSM-5 catalyst packing methods were compared in the membrane reactor: (1) catalyst in contact with the Al2O3 substrate and (2) catalyst in contact with the membrane layer. The second packing method exhibited higher efficiency for MX isomerization. Compared with a conventional reactor, the membrane reactor with the second catalyst packing method had increased rates of 26.0% and 31.2% for the PX yield and selectivity, respectively, at a temperature of 270 °C. PX selectivity and yield increased as the flow rate of the sweep gas increased because of the enhanced PX flux through the zeolite membrane. Increasing the gas hourly space velocity (GHSV) could reduce the contribution of membrane permeation to PX productivity. It was also revealed that MFI zeolite membranes exhibit a high stability for xylene isomerization. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801606s [article] Silicalite-1 zeolite membrane reactor packed with HZSM-5 catalyst for meta-xylene isomerization [texte imprimé] / Chun Zhang, Auteur ; Zhou Hong, Auteur ; Xuehong Gu, Auteur . - 2009 . - pp. 4293–4299. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 9 (Mai 2009) . - pp. 4293–4299 Mots-clés : Silicalite-1  zeolite  membrane  Para-xylene  selectivity  Meta-xylene  Isomerization Résumé : A silicalite-1/α-Al2O3 zeolite membrane with high para-xylene (PX) selectivity was tested for isomerization of meta-xylene (MX) to PX. Two HZSM-5 catalyst packing methods were compared in the membrane reactor: (1) catalyst in contact with the Al2O3 substrate and (2) catalyst in contact with the membrane layer. The second packing method exhibited higher efficiency for MX isomerization. Compared with a conventional reactor, the membrane reactor with the second catalyst packing method had increased rates of 26.0% and 31.2% for the PX yield and selectivity, respectively, at a temperature of 270 °C. PX selectivity and yield increased as the flow rate of the sweep gas increased because of the enhanced PX flux through the zeolite membrane. Increasing the gas hourly space velocity (GHSV) could reduce the contribution of membrane permeation to PX productivity. It was also revealed that MFI zeolite membranes exhibit a high stability for xylene isomerization. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801606s

Synthesis of Fe3O4 nanoparticles using controlled ammonia vapor diffusion under ultrasonic irradiation / Zunli Mo in Industrial & engineering chemistry research, Vol. 50 N° 6 (Mars 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 6 (Mars 2011) . - pp. 3534–3539 Titre : Synthesis of Fe3O4 nanoparticles using controlled ammonia vapor diffusion under ultrasonic irradiation Type de document : texte imprimé Auteurs : Zunli Mo, Auteur ; Chun Zhang, Auteur ; Ruibin Guo, Auteur Année de publication : 2011 Article en page(s) : pp. 3534–3539 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Ammonia  vapor  Ultrasonic  irradiation Résumé : Fe3O4 nanoparticles were synthesized for the first time via an ammonia vapor diffusion process under ultrasonic irradiation. The possible ultrasound mechanism and the process of ammonia diffusion and reaction has been deduced. Influences of experiment parameters such as reaction time, temperature on the morphology, and size of products were also investigated in detail. Morphology and magnetic properties of products were carefully studied by Fourier transform infrared spectra (FTIR), X-ray diffraction (XRD), Scanning electron microscopes (SEM), and vibrating sample magnetometer (VSM). The synthesized Fe3O4 nanoparticles possess superparamagnetic properties at room temperature, and the saturation magnetization is 70.5 emu/g. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie101683x [article] Synthesis of Fe3O4 nanoparticles using controlled ammonia vapor diffusion under ultrasonic irradiation [texte imprimé] / Zunli Mo, Auteur ; Chun Zhang, Auteur ; Ruibin Guo, Auteur . - 2011 . - pp. 3534–3539. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 6 (Mars 2011) . - pp. 3534–3539 Mots-clés : Ammonia  vapor  Ultrasonic  irradiation Résumé : Fe3O4 nanoparticles were synthesized for the first time via an ammonia vapor diffusion process under ultrasonic irradiation. The possible ultrasound mechanism and the process of ammonia diffusion and reaction has been deduced. Influences of experiment parameters such as reaction time, temperature on the morphology, and size of products were also investigated in detail. Morphology and magnetic properties of products were carefully studied by Fourier transform infrared spectra (FTIR), X-ray diffraction (XRD), Scanning electron microscopes (SEM), and vibrating sample magnetometer (VSM). The synthesized Fe3O4 nanoparticles possess superparamagnetic properties at room temperature, and the saturation magnetization is 70.5 emu/g. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie101683x