Sökresultat

Zeaxanthin, a carotenoid in the xanthophyll cycle, has been suggested to play a role in the protection against photodestruction. We have studied the importance of the parameters involved in zeaxanthin formation by comparing spinach plants grown in low light (100 to 250 mol m-2 s-1) to plants transferred to high light (950 mol m-2 s-1). Different parameters were followed for a total of 11 days. Our

Peak oil has acquired prominence in the political lexicon of an increasing number of critical and radical perspectives during the ongoing ecological and economic crisis. By examining examples within academia as well as initiatives such as the Degrowth Movement and the Transition Network, this paper documents how a series of red-green discourses and movements mobilise the narrative of peak oil as a

This article presents an empirical study, which analyzes the characteristics of those social housing projects implemented in the medium-sized city of Liberia, in Costa Rica, and their relationship to the territorial distribution of inequality and urban poverty. The dynamic economic growth of the province of Guanacaste and in particular of its capital, the city of Liberia, is widely recognized in C

Adaptation in new environments depends on the amount of genetic variation available for evolution, and the efficacy by which natural selection discriminates among this variation. However, whether some ecological factors reveal more genetic variation, or impose stronger selection pressures than others, is typically not known. Here, we apply the enzyme kinetic theory to show that rising global tempe

Climate change is expected to increase the frequency and intensity of the most severe weather-related hazards over the coming decades. The poor in developing countries are particularly susceptible to climate change, often living in informal or precarious settlements. In order to reduce the vulnerability in those areas and strengthen people´s capacities to adapt to climate change, there is a need f

The EU’s Common Security and Defence Policy was created to stabilize the EU’s Neighbourhood, fuel the EU’s geopolitical crisis management ambitions, and strengthen European values abroad. In the recent debate, however, it was criticized as ineffective or destabilizing. While specific regions and mission types were previously researched, a comprehensive analysis of all EU crisis management operatio

Kan hemoglobin från växter lösa humana problem? Dagligen tar vi för givet att vårt blod syresätts tillräckligt för att orka med alla sysslor. Detta möjliggörs av det livsviktiga proteinet hemoglobin som finns i vårt blod. I dagens samhälle råder det dock blodbrist samtidigt som många drabbas av järnbrist. Det är där forskningen på växthemoglobin kommer in i bilden. Experimenten som genomförts i dThe protein hemoglobin (Hb) is vital for us humans to ensure enough oxygen replacement in the body. Hb-resembling proteins also exist in plants, these are called phytoglobins (Pgbs). Pgbs are very interesting since they can play a considerable role in the development of blood substitutes and iron supplements for human use. A few years ago, genes that code for Pgb in sugar beet were found and ident