The evaluation of energy efficiency improvements in polyisoprene footwear production is shown. By installing air preheater, combustion natural gas consumption reduced by 7%. Simultaneously, the boiler outlet flue gases’ temperature decreased from 204 °C to 66.93 °C, providing a sound basis for both economical savings and improvements, as well ecological benefits environment. application condens...

China’s hog production is undergoing a great transformation due to the soaring demand and changing raising system. Regarding the essential role of pork in Chinese diet, a systematic analysis on the productivity and efficiency of hog production can provide significant implications for policy makers. This paper investigates the productivity and efficiency of hog production and determinants of tec...