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Environmental Factors and Adoption of E-Business in China: A Case of International Trading Industry
Jian Wang,Fujun Lai,Dahui Li,Joe Hutchinson 중앙대학교 한국전자무역연구소 2006 전자무역연구 Vol.4 No.2
This study examines environmental factors and adoption of e-Business in China¡'s international trading companies. This paper, which represents a pioneer study of e-business in a China’s industry setting, provides valuable managerial guidance for e-business in China and contributes to the literature with an empirical investigation of e-business in China. A study of 307 Chinese international trading companies resulted in the following conclusions: Firstly, China’s international trading companies are facing increased pressure to implement e-Business. Secondly, high-level e-business implementations remain low in China.
Gongyuan Wei,Dahui Wang,Min Nie,Jian Chen 한국화학공학회 2010 Korean Journal of Chemical Engineering Vol.27 No.2
Several inorganic/organic N-containing substances were tested as nitrogen source for efficient glutathione production by C. utilis WSH 02-08. Although the strain could assimilate all the inorganic/organic nitrogen, urea and ammonium sulfate were found more favorable to cell growth and glutathione biosynthesis in a flask, respectively, and an optimal C/N ratio existed for each as 5.6 mol/mol and 8.3 mol/mol. A mixed nitrogen source of urea and ammonium under diverse C/N ratios could not boost glutathione fermentation despite the many mixed strategies that were introduced. Batch glutathione production in a stirred fermentor, using the sole or mixed nitrogen sources of urea and ammonium sulfate under their optimal C/N ratios, were conducted; urea was further proved to be the best nitrogen source for glutathione production. The reason was then quantitatively described by kinetic model, together with the distribution of flux for metabolites in metabolic network of glutathione biosynthesis by C. utilis WSH 02-08.
Photoelectrocatalytic Degradation of Phenol Using a TiO₂/Ni Thin-film Electrode
Xiaoli, Yan,Huixiang, Shi,Dahui, Wang 한국화학공학회 2003 Korean Journal of Chemical Engineering Vol.20 No.4
As a new type of photoelectrode, TiO₂/Ni thin-film electrode was prepared by dip-coating technique. The structural and surface morphology of electrode was examined by X-ray diffraction (XRD) and scanning electron microscope (SEM). Effects of initial phenol concentration, pH value, number of film layers, voltage of electrical bias applied, variation of inorganic salt type and types of dissolved gas on the photoelectrocatalytic (PEC) degradation of phenol using ultraviolet (UV) illuminated TiO₂/Ni thin-film electrode were investigated. The mechanism of PEC degradation of phenol was also studied by analyzing reaction intermediates.
Gongyuan Wei,Na Shao,Dahui Wang,Qianpeng Zhang,Xiaoguang Ge,Min Nie 한국화학공학회 2010 Korean Journal of Chemical Engineering Vol.27 No.6
An effective S-adenosylmethionine and glutathione enriching yeast mutant of Candida utilis CCTCC M 209298 was first screened from plates containing 0.5 g/L of DL-ethionine by complex mutagenesis with UV and γ-ray in this study. Medium components optimization for enhanced co-production of S-adenosylmethionine and glutathione by C. utilis CCTCC M 209298 was further carried out using response surface methodology. The significant factors influencing S-adenosylmethionine and glutathione co-production were selected by Plackett-Burman design as sucrose, KH2PO4 and L-methionine, and Box-Behnken design was applied for further optimization studies. Based on these approaches, the optimized concentrations on medium components for higher co-production of S-adenosylmethionine and glutathione were sucrose 35.4 g/L, (NH4)2SO4 10 g/L, KH2PO4 12.3 g/L, MgSO4·7H2O, 0.05 g/L, CaCl20.05 g/L and L-methionine 4.6 g/L. The medium optimization by response surface methodology led to a total production of 589.3 mg/L on S-adenosylmethionine and glutathione, which was 2.4-fold increased compared with the medium without optimization.
( Yan Xiaoli ),( Shi Huixiang ),( Wang Dahui ) 한국화학공학회 2003 Korean Journal of Chemical Engineering Vol.20 No.4
As a new type of photoelectrode, TiO₂/Ni thin-film electrode was prepared by dip-coating technique. The structural and surface morphology of electrode was examined by X-ray diffraction (XRD) and scanning electron microscope (SEM). Effects of initial phenol concentration, pH value, number of film layers, voltage of electrical bias applied, variation of inorganic salt type and types of dissolved gas on the photoelectrocatalytic (PEC) degradation of phenol using ultraviolet (UV) illuminated TiO₂/Ni thin-film electrode were investigated. The mechanism of PEC degradation of phenol was also studied by analyzing reaction intermediates.