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Caldicellulosiruptor Saccharolyticus: an Ideal Hydrogen Producer?

Popular Abstract in English What is common between the science of physics and global politics? They both define power in terms of energy. Indeed, the uneven distribution of petroleum reserves has been one of the main reasons of social, political and economic problems worldwide. Even more worrying is the rapid increase in the levels of greenhouse gases in the atmosphere. This is mainly caused by ouCaldicellulosiruptor saccharolyticus is an extremely thermophilic, strictly anaerobic, Gram-positive and cellulolytic microorganism with a natural ability to produce hydrogen (H2) at nearly theoretical maximum yield, i.e. 4 mol/ mol of glucose. Due to its CO2-free combustion and high energy density, among other desirable properties, H2is touted as a fuel of the future. Biological H2 production b

Evaporation of methyl- and dimethyl-substituted malonic, succinic, glutaric and adipic acid particles at ambient temperatures

Vapor pressures of five methyl-substituted dicarboxylic acids are inferred from measurements of evaporation rates of sub-micron particles using the TDMA technique at ambient temperatures. Vapor pressures values are given. These vapor pressures are compared witha vailable literature data and withv apor pressures of the un-substituted acids. Our results demonstrate that molecular structure is import

Needed by Nobody: Homelessness, Humiliation, and Humanness in Post-Socialist Russia

Homelessness became a conspicuous facet of Russian metropolitan cityscapes only in the 1990s, when the Soviet criminalization of ‘vagrancy’ and similar offences was abolished. This study investigates homelessness as a sociostructural phenomenon as well as an individually experienced life condition, with a focus on homeless people in St. Petersburg in 1999 onwards. To these men and women, homeless

Bra förpackning skyddar och säljer i hållbart system

Förpackningar ses ofta som en belastning för miljön och något ont som ska minimeras. Ny forskning visar att det tvärtom finns tillfällen då det är motiverat att öka mängden förpackningsmaterial, exempelvis när man kan minska spillet. Tvärvetenskapligt framtagna sätt att förpacka varor kan bidra till en hållbar utveckling och öka marginalerna för handeln. Nyckeln till effektiva varuflöden är välfyl