In a typical household there are appliances for heating and other appliances for cooling. The former, including geysers, stoves, ovens and space heaters, typically use a heating element - an inefficient approach from an energy usage standpoint.... continue reading
Membrane permeation is frequently modeled using a vector of relative permeabilities for each component that is permeated. However, no membrane material will have truly uniform permeability; instead, any particular membrane material exhibits... continue reading
For decades, sportspersons have lived by the adage “live high, train low,” an approach that has been repeatedly borne out by research. High altitude adaptations improve performance, while the availability of more oxygen at low altitude permits... continue reading
Recent research has demonstrated that biomass can be used as a reducing agent for iron ore but also that iron ore reduction can be coupled with biomass gasification, co-producing reduced iron and synthesis gas which can itself be converted to... continue reading
China's recent announcement that they will cease to accept large quantities of waste plastic has brought a growing crisis into sharp focus; global capacity for waste plastic handling is being rapidly outstripped by production. The clear solution... continue reading
It has been established that dissolution of membrane lipids plays a role in the toxicity of ethanol and butanol to micro-organisms; a matter of particular importance for the production of bio-alcohol fuels using fermentation by microbial activity.... continue reading
It is conventionally assumed that the achievable concentration of a bio-alcohol molecule by fermentation is limited by the toxicity of that molecule to the micro-organisms producing it. In the case of ethanol, for example, extremely high titers... continue reading
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