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The metals contained in various mobile phones were analyzed. More than 20 elements were detected and their net amounts were found to increase year by year. The environmental and economic impacts were assessed based on an elemental analysis. The CO2 emissions generated by the incineration of plastics were estimated to be almost the same as those avoided by recovering the metals. Gold had the biggest...
The extended environmental impact of e-learning was studied including ripple effects. E-learning changes the user's lifestyle and the various changes (ripple effects) were quantified by using an Internet questionnaire. The environmental burdens were evaluated with LCA and the results were shown as carbon dioxide (CO2) emissions. E-learning can reduce the CO2 emissions generated by conventional training...
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