Abstract: In this paper, a nano-Fe/polyethyleneimine (PEI) composite was synthesized via nano-Fe and PEI cross-linked by glutaraldehyde. The removal rate of Cr(VI) by nano-Fe/PEI composite was investigated and compared with that of ...

Abstract: The absorption air-conditioning system is a low-power-consumption and low-noise system and is also good at balancing the electricity peak-valley system. It can be driven by low-grade energy, such as solar energy and ...

Abstract: Urban road infrastructure has significantly affected the popularity and use of public bike-sharing systems in many cities. Using the bike-sharing system of Xi’an, China, as a case study, this paper aims to discuss how the ...