Sulfur is one of the most significant impurities in coal, which reduces the quality of coal and also results in environmental pollution. This work was aimed to investigate the removal of sulfur from coal by the leaching method employing parameters expected to affect the removal rate such as acid concentration (10-30%), temperature (40-80 °C), and reaction time (40-100 min). A response surface m...

With the increase in number of elderly people world, problem population aging has gradually become prominent. People are paying more and attention to elderly, medical supplies for have also attracted great attention. At present, various intelligent boxes appeared domestic foreign markets. These medicine mainly include functions such as setting time, reminding take regularly, SMS notification se...

SUMMARY After describing our design goals, we give a short overview over pdelib, our tool box for the numerical simulation of partial diierential equations. We try to explain some parts of the design of the tool box using the methodology of design patterns.