Filtyp
Many phytoplankton species produce resting cysts, forming 'seed banks' on lake sediments until they germinate and provide inocula (recruitment) for future pelagic populations. We have addressed the question of whether the littoral or the profundal zone provides the inoculum for planktonic populations in a eutrophic and dimictic lake (Lake Erken, Sweden). Our hypotheses were that high temperature,
Culture filtrates of the nematophagous fungi Verticillium chlamydosporium and V. suchlasporium growing on colloidal chitin showed increasing chitinolytic activity and production of two (32- and 43-kDa) main proteins. Maximum activity was found 18-20 days after inoculation, but V. suchlasporium always displayed higher activity. Zymography of such filtrates on carboxymethyl-chitin-Remazol brilliant
Popular AbstractDen snabba folkökningen I Afrika söder om Sahara förändrar kontinuerligt betingelserna för bondebefolkningens försörjning. I ett av de bördigaste och samtidigt mest tättbefolkade områdena I Östafrika, Mount Meru I norra Tanzania, så har befolkningen nära tiodubblats under loppet av de senaste hundra åren. För bönderna i området är markbristen det allt överskuggande problemet. Till Sustained high population growth rates are radically altering the livelihood conditions for small farmers in sub-Saharan Africa. In one of the most fertile and densely settled areas of East Africa, Mount Meru in Northern Tanzania, the size of the population has increased nearly tenfold within the last century. As a consequence, the most serious problem facing farm families is shortage of land. Cou
There is convincing evidence for a decreased risk of breast cancer with increased physical activity. Uncertainties remain, however, about the role of different types of physical activity on breast cancer risk and the potential effect modification for these associations. We used data from 218,169 premenopausal and postmenopausal women from nine European countries, ages 20 to 80 years at study entry
Head and neck squamous cell carcinomas (HNSCC) are often characterized by complex karyotypic changes, and a substantial proportion of the reported tumors have shown intratumor heterogeneity in the form of cytogenetically related (40%) or unrelated clones (20%). In order to study intratumor heterogeneity and to distinguish the temporal order of chromosome rearrangements in these tumors, two or more
The focus of this thesis is the debate regarding gasoline taxes in Sweden which is an example of a polarised sustainability debate. The aim is to get an in-depth understanding of the antagonisms of the debate by looking into how the pro and contra sides create and maintain cultural legitimacy and societal resonance through discursive struggles. Moreover, this thesis explores the framing struggles
Knowledge about how the Government governs its agencies is important to ensure legitimacy of the public exercise of power, and to further develop governing methods suitable for diverse types of agencies. This study focuses on a type of agency that is perceived as particularly difficult to govern – the university. The purpose is to describe how and to what extent the Government has attempted to gov
Deep-sea mining (DSM) is an emerging extractive industry often portrayed as part of a sustainable oceanic ‘blue economy’ despite being characterized by profound ecological uncertainty. This thesis critically examines the emergence focusing on the extraction of polymetallic nodules, by developing two arguments. First, it argues that DSM represents the ‘subsumption of nature’ by examining its biophy
This essay seeks to address how power asymmetries or structural biases may affect how European Union (EU) law considers market actors and the freedom to conduct a business, combining EU legal methodology with feminist and queer legal and political theory. The research finds that the EU is a purposive order, whose primary objectives inform the EU legal order and the development of EU law. EU functi
The relative importance of exploitation rate and environmental variability in generating fluctuations of harvested populations is a key issue in academic ecology as well as population management. We studied how the eastern Baltic cod (Gadus morhua) is affected by fishing and environmental variation by using a newly developed single species state-space model. Survey data and auxiliary environmental
Alcohol intake has been associated to breast cancer in pre and postmenopausal women; however results are inconclusive regarding tumor hormonal receptor status, and potential modifying factors like age at start drinking. Therefore, we investigated the relation between alcohol intake and the risk of breast cancer using prospective observational data from the European Prospective Investigation into C
Wildfires are a major driver of ecosystem development and contributor to carbon emissions in boreal forests. We analyzed the contribution of fires of different fire size classes to the total burned area and suggest a novel fire characteristic, the characteristic fire size, i.e., the fire size class with the highest contribution to the burned area, its relation to bioclimatic conditions, and intra-
To study the prevalence of chronic widespread pain (ChWP), chronic regional pain (ChRP), and fibromyalgia in patients with early rheumatoid arthritis (RA) followed for 5 years after inclusion, and to study the effect of pain on measures of disease activity and function.
Endometrial cancer risk has been associated with reproductive factors (age at menarche, age at menopause, parity, age at first and last birth, time since last birth and use of oral contraceptives (OCs)]. However, these factors are closely interrelated and whether they act independently still requires clarification. We conducted a study to examine the association of menstrual and reproductive varia
This study aims to theorize more concretely the micro-foundations of reform strategies with attention to the role of would-be reform winners in motivating strategy choice. The theory incorporates insights about multidimensional preferences into Weaver’s framework and builds on a growing literature on the framing of welfare state change in order to hypothesize that governments may face a vote-seeki
The etiology of male breast cancer is poorly understood, partly because of its relative rarity. Although genetic factors are involved, less is known regarding the role of anthropometric and hormonally related risk factors.
Type III receptor tyrosine kinases (RTKs), FLT3 and c-Kit play important roles in a variety of cellular processes. A number of SH2-domain containing proteins interact with FLT3 and c-Kit and regulate downstream signaling. The SH2-domain containing non-receptor protein tyrosine kinase CSK is mainly studied in context of regulating Src family kinases. Here we present an addition role of this kinase
Epidemiological studies indicate that cadmium exposure through diet and smoking is associated with increased risk of cardiovascular disease. There are few data on the relationship between cadmium and plaques, the hallmark of underlying atherosclerotic disease.
