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The fermented tea beverage kombucha is a traditional drink that has been consumed for thousands of years in Asia. Over the past decades, it has gained greatly in popularity amongst consumers and researchers also in the rest of the world. Kombucha is produced through fermentation of sweetened tea by a complex community of bacteria, mainly dominated by acetic acid bacteria, and a variety of yeast. D
Fractal curves are self similar objects, most of which have the property of being nowhere differentiable. The foundations of fractal curves are in the study of continuous functions with no points of differentiability. In this thesis, the continuity and nowhere differentiability of the Weierstrass function will be proved by using an auxiliary function and mostly elementary tools from Fourier analys
Women’s labour force participation has historically been impeded by their traditional role of taking care of children, a problem that has been reduced with the emergence of formal daycare. However, one problem that remains is that many children in Sweden still do not participate in preschool. Among these children, there is an overrepresentation of foreign-born children and children from low-income
Lake sediments have lately been explored as a 10Be archive, complementing previous research on ice cores and marine sediments. 10Be is an important proxy as it can be used to study past solar activity, a factor which affects the climate. Where other methods studying solar activity only cover a brief period of history, 10Be has the potential to go further back in time. The concentrations of 10Be st
The European Spallation Source ERIC is a new neutron spallation source being built in Lund, Sweden, with NMX as one of the pioneer instruments. NMX is a Quasi-Laue single crystal neutron diffractometer for the investigation of large biological molecules. Wavelength, size and divergence of the neutron beam reaching the sample have to be controlled to properly match the different experimental needs.
The industrial food production system have given rise to tens of thousands of local, national and international social movements concerned with food and agriculture, reacting to the perceived social and environmental failures of the industrial food system. One of the directions inside these movements is the internationally based “local food” movement. The ”local food” movement promotes small-scal
Warming in the Arctic occurs at a much higher rate than the global average, which has a considerable impact on the Arctic terrestrial carbon cycle. Permafrost thawing can release substantial amounts of carbon, whilst tundra shrubification and tree-line advance, on the other hand, may compensate for this. To gain a better understanding of the Arctic carbon cycle in the future, global dynamic vegeta
As the Arctic warms, vegetation is responding, and satellite measures indicate widespread greening at high latitudes. This ‘greening of the Arctic’ is among the world’s most important large-scale ecological responses to global climate change. However, a consensus is emerging that the underlying causes and future dynamics of so-called Arctic greening and browning trends are more complex, variable a
The Nordic doctorate has its roots in the Germanic Bildung-tradition, with a decentralised and discipline-oriented curriculum, local and individualised leadership and autonomous supervisors. Currently, the Nordic doctorate has arrived at a crossroads where it is pulled in two different directions. The first characterised by formalisation and centralised Graduate Schools with study directors, middl
Cyclic hormonal stimulation of the breast tissue plays a significant role in breast carcinogenesis. Current risk factor models do not include direct measures of cycle characteristics although the effects of possible surrogates of cycle activity such as age at menarche and menopause, parity, and nursing time have been investigated. Future risk models should also include menstrual cycle length, regu
Two recent outreach projects are making use of public communities to enhance and build upon the first phases set up by physicists. “ATLAScraft” is a recreation of ATLAS and the wider CERN complex in Minecraft. The basic layout was provided, but school students subsequently researched and created the experiment and subdetector models and their own mini-games to explain various aspects of the LHC an
Observations during the Ice in Clouds Experiment-Tropical (ICE-T) field experiment show that the ice particles concentration in a developing deep convective clouds at the level of T = −15 °C reached about 500 L−1, that is, many orders higher than that of ice-nucleating particle. To simulate microphysics of these clouds, the 2-D Hebrew University Cloud model (HUCM) with spectral bin microphysics wa
The EU lacks competence to regulate research in a comprehensive manner, yet furthering research is one of its aspirations. Data protection, however, is an area within which the EU has legislated extensively. During the development of the General Data Protection Regulation (GDPR), an important issue to tackle was how to balance the EU aspirations, on the one hand, with limited competences in resear
Recent evidence has shown that D-amino acids are present in animals and humans in high concentrations and fulfill specific biological functions. In the central nervous system, two D-amino acids, D-serine and D-aspartate, occur in considerable concentrations. D-Serine is synthesized and metabolized endogenously and the same might account for D-aspartate. D-Serine has been studied most extensively a
