Millions of unheated and simple biogas digesters are currently used on small-scale livestock farms in developing countries. These digesters are not equipped to measure methane production and methane production is low during cold periods. The aim of this study was to develop kinetic models for...

The last two decades have offered a dramatic rise in the use of digital technologies such as wireless sensor networks that require small isolated power supplies. Energy harvesting, a method to gather energy from ambient sources including sunlight, vibrations, heat, etc., has provided some...

Hydro-conversion of coal hydroliquefaction residue obtained from a 6t/day pilot plant of Shenhua Group in Shanghai was carried out under the hydrotreating condition. The coal hydroliquefaction residue and its product were extracted in sequence with <em>n</em>-hexane, toluene and tetrahydrofuran in a...