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This report deals with what the distribution industry is and the actual condition and keynote of the domestic distribution industry. Now, it is difficult compare with the domestic distribution industryand other advanced nat ion. because of inferior enviroment and given circumstance such as. Open market pressure. We will study about realities and weakness of the domestic distribution industry, also check how to cope with, especially the Government and enterprise, these difficulties for the development of the domestic distribution industry.
Arsenic is a serious problem in abandoned mine area, specially in the forms of acid mine drainage and leachate from mine tailings. Cationic metals including cadmium, copper, lead, nickel, and zinc have been treated by hydroxide precipitation and sulfide precipitation using sulfate reducing bacteria. However, oxyanionic metals including arsenic and Cr(VI) have not treated after pH change and wetlands. Recently, removal of arsenic is a hot issue in the abandoned mine area in Korea. In this study, the characteristics of arsenic removal were investigated using iron coated sand(ICS). ICS consists of sand grains coated with ferric hydroxide which are used in fixed bed reactors to remove various metal species. The metal ions are exchanged with the surface hydroxides on the ICS. The effects of pH and competing ions on arsenic removal by ICS were studied using batch sorption kinetic and sorption isotherms and fixed bed experiments. In the presence of competing ions such as sulfate, ICS showed high sorption capacity. ICS could be a good sorption material for arsenic for the treatment of acid mine drainage and leachate from mine tailings.
The research indicates possibility of applications to hotel businesses of which the quality perceived by customers deduces effects to the customer satisfaction such as customer values, image, and customer attitudes. Recently, the importance of perceived service quality has been emphasized. This research shows that customer-oriented service such as understanding customer's needs and providing prompt and precise service improves their satisfaction. Therefore, this research can provide many topics related to the importance of managing a variety of perceived quality factors.