In this paper, expanded graphite was prepared by chemical oxidation system with hydrogen peroxide as oxidant and concentrated sulfuric acid as intercalation agent.Expanded graphite was obtained by microwave expansion.The effects of the amount of hydrogen peroxide and concentrated sulfuric acid on the morphology and specific surface area of expanded
The development of research on masculinity since the 1980s hasproduced rich evidence of the diversity of masculinities.This mybouddha bague is now anestablished research field and has had many practical applications.Ithas not yet fully absorbed the wealth of ideas and debates aboutmasculinities and social change that come from the colonized and pos
To take single-phase us polo assn womens socks PWM rectifier as AFE of cascaded H-bridge multi-level frequency converter can satisfy requirement that electric drive system of coal mine hoist must have capacity of bidirectional energy flowing, but there are third harmonic in its AC-side current because of the second ripple of output voltage.To slove
Plants with pesticidal properties have been ezall fly spray investigated for decades as alternatives to synthetics, but most progress has been shown in the laboratory.Consequently, research on pesticidal plants is failing to address gaps in our knowledge that constrain their uptake.Some of these gaps are their evaluation of their efficacy under fie