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Bacterial Adaptive Responses - Coping with Oxygen Limitation, Reactive Nitrogen Species and Disulfide Stress

Bacteria have a remarkable ability to adapt to different environments. When bacteria encounter stress that causes macromolecular damage in the cell, leading to a suboptimal performance of cell metabolism, they can elicit an adaptive response. In this thesis Bacillus subtilis is used as the primary model organism to study bacterial adaptation to oxygen limitation, reactive nitrogen species and disu

Experimental Studies on Ambient Aerosol Hygroscopicity

Popular Abstract in Swedish Luften vi andas innehåller inte bara gaser som kväve och det syre vi behöver för att leva. Förutom de vanligaste gaserna i atmosfären finns det så kallade spårgaser, som visserligen har väldigt låg koncentration, men som har stor betydelse genom sina speciella kemiska och fysiska egenskaper. Koldioxid och ozon är exempel på sådana gaser. Förutom ozonets kraftiga oxideraThe air around us is full of aerosol particles which originate from a myriad of sources and which have vastly different chemical and physical properties. These particles span size ranges from 1 nm to 100 μm, equivalent to a factor 100 000 in diameter difference and a factor 10^15 in volume difference. They affect our health by depositing in our airways, worsening cardiovascular deceases, and they

Bridging the islands of consciousness : on street art’s potential to affect our perception of public space

For the “Street Art, the City and the Public: Changing the Urban Vision” session at International Visual Sociology Association conference 2013, I discussed the unsanctioned nature of street art and the way it may influence our perception of public space. Taking as a point of departure George Simmel’s well-known thoughts on the blasé urban resident, I see public space as being dominated by individ