Sökresultat

This paper investigates and discusses four instruments found in a sixteenth century Spanish book of navigation. The night clock is a rather standard application of similar instruments known since the fourteenth century in Europe. Cortés’ explanation of the causes of the deviation of the magnetic and geographical north is quite original. His instrument to correct for that the Polaris deviates from

Protein engineering studies often suggest the emergence of completely new enzyme functionalities to be highly improbable. However, enzymes likely catalysed many different reactions already in the last universal common ancestor. Mechanisms for the emergence of completely new active sites must therefore either plausibly exist or at least have existed at the primordial protein stage. Here, we use res

DEXD/H-box RNA helicases couple ATP hydrolysis to RNA remodeling by an unknown mechanism. We used x-ray crystallography and biochemical analysis of the human DEXD/H-box protein DDX19 to investigate its regulatory mechanism. The crystal structures of DDX19, in its RNA-bound prehydrolysis and free posthydrolysis state, reveal an alpha-helix that inserts between the conserved domains of the free prot

This chapter reflects on the need for a decolonial turn in Sweden’s foreign policy. The growing ecological emergencies that we are faced with call on us to recognise and address quite profound global inequities, many of which are rooted in histories of European colonialism. In a sprawling conversation about the coloniality of the global economy and Sweden’s role in it, the chapter addresses such t

Protests against various transition projects, including both infrastructure and policy changes, are not uncommon and have been observed in diverse contexts. However, protests specifically against Bus Rapid Transit (BRT) implementation remain understudied. This study examines the local media debate surrounding a BRT project in Örebro, Sweden, with a focus on how proponents and opponents use argumen

This chapter examines how the history and legacy of Polish-Swedish activist Ludwika Broel-Plater have been obscured in Swedish public discourse, in which she is recognized mainly as a passive and grateful recipient of Swedish humanitarianism. The first part of the chapter examines silences that have entered narrative constructions in Swedish public discourse about survivors who came to Sweden as r

The special issue “Contesting VIP Urbanism” includes timely analytical interventions to contest an increasing tendency to luxury investments in many capitalist cities of the past decades. This essay raises some theoretical and empirical questions concerning the present state of globalization and neoliberalism as two defining characteristics of an era of the global capitalist economy in which both

Walking and cycling are considered sustainable transport modes, promoted as a means to reduce car traffic. In the scientific literature, they have mostly been investigated separately, but should be considered jointly to enable a modal shift. Both daytime and dark conditions need to be studied, to improve understanding of how environmental features are affected by temporal variation. A conceptual m

Chosen Memories brings together contemporary works by Latin American artists who have been investigating history as source material for their work.