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Membrane extraction techniques permit the application of classical liquid-liquid extraction (LLE) chemistry to instrumental and automated operation. Various shortcomings of LLE are overcome by membrane extraction techniques as they use none or very little organic solvents, high enrichment factors can be obtained and there are no problems with emulsions. A three phase SLM system (aq/org/aq), where
High-profile bribery scandals that involve powerful people and large sums of money are often the object of general indignation and legal action. When it comes to bribery of the everyday kind, however, it is far less obvious which gifts should be seen as bribes, be it in a moral or legal sense. Legal cases of this kind almost always include voices that strive to refute accusations of bribery. This
Popular Abstract in Swedish Ett bröstmjölksprotein som dödar tumörceller Denna avhandling beskriver den tumörcell- och bakteriedödande effekten av ett proteinkomplex från bröstmjölk. Proteinkomplexet, en veckningsvariant av humant alfa-laktalbumin, inducerar apoptos (programmerad celldöd) i tumörceller och visar sig ha liknande effekter även mot bakterier. Amning förser inte bara barnet med optiHuman milk contains a vast array of bioactive molecules, with nutritional and protective functions. This thesis describes the effects of a human milk protein complex, MAL, on tumour cells and bacteria. During our studies on the anti-adhesive properties of human milk we observed that a milk fraction killed tumour cells. The morphology of the cells indicated apoptotic cell death and this was verifie
Popular Abstract in Swedish En indikator-jon för en kvantdator Ända sedan transistorn uppfanns 1948 har datorer blivit allt mer kraftfulla. Trots den enorma utveckling som skett finns det fortfarande problem som är för svåra för en dator att lösa. Ett exempel är simulering av stora molekyler, t.ex. proteiner, vilket skulle vara användbart inom medicin och biologi, bland annat för att förutsäga hRare-earth ions doped into a transparent crystal can have optically excited states with coherence times of milliseconds and hyperfine levels with coherence times of hours when cooled down to liquid helium temperatures. This makes them attractive for developing quantum computing hardware. A quantum transistor can be implemented in a rare-earth-ion-doped crystal by utilizing a dipole blockade effe
Orientation for insects in olfactory landscapes with high semiochemical diversity may be a challenging task. The partitioning of odor plumes into filaments that are interspersed with pockets of ‘clean air’ may help filament discrimination and upwind flight to attractive sources in the face of inhibitory signals. We studied the effect of distance between odor sources on trap catches of the beetle,
New anti-inflammatory drugs with fewer adverse effects than existing drugs may prove to be useful in the treatment of several inflammatory disorders. A critical step in acute inflammation is the infiltration of neutrophils into tissues. Therefore, molecules that target and inhibit this early inflammatory event are attractive to engineer to suit medical needs. The Chemotaxis Inhibitory Protein of
While pipe biofilms in DWDSs (drinking water distribution systems) are thought to affect the quality of distributed water, studies regarding the microbial processes are impeded by the difficulties in accessing biofilm undisturbed by DWDS maintenance. In this study, pipe sections were removed from a fully operational DWDS for biofilm sampling over two years and three months, and before and after st
The study of molecular dynamics involves observations of the motion of nuclei and electrons. While nuclear motion is usually on the picosecond or femtosecond timescale, attosecond precision is necessary to directly observe the motion of electrons. Ultrashort laser pulses have become established as a viable tool for probing femtosecond dynamics by irradiating the target for only extremely short tim
This paper reports on studies of multiple-injection strategies of gaseous fuel in a model combustion chamber and the role of jet-jet interactions on the mixing processes in the chamber using large-eddy simulation (LES). A high-pressure non-reacting gas flow injected through a jet with a nozzle diameter of 1.35 mm into a quiescent inert air environment is considered. First, we validate the method a
Most large tidewater glaciers in Svalbard are known to have surged at least once in the last few hundred years. However, very little information exists on the frequency, timing or magnitude of surges prior to the Little Ice Age (LIA) maximum in ∼1900. We investigate the sediment-landform assemblages produced by multiple advances of the Nathorstbreen glacier system (NGS) in order to reconstruct its
Soil contamination is a widespread problem and actions need to be taken in order toprevent damage to the groundwater and the life around the contaminated sites. InSweden more than 80.000 sites are potentially contaminated, therefore there is ademand for accurate and efficient methods for site characterization and soilremediation. In the past, the preferred methodology for soil remediation involved
The Drosophila antenna contains receptor neurons for mechanical, olfactory, thermal, and humidity stimuli. Neurons expressing the ionotropic receptor IR40a have been implicated in the selection of an appropriate humidity range [], but although previous work indicates that insect hygroreceptors may be made up by a "triad" of neurons (with a dry-, a cold-, and a humid-air-responding cell []), IR40a
The present thesis investigated how listeners use prosody to rapidly predict upcoming lexical and syntactic structures. In the first three studies, it was shown that listeners take advantage of Swedish word-level tones to pre- activate upcoming word endings. Every Swedish word has a tone on the word stem – known as a ‘word accent’ – which is either low or high, and the tone is assigned to the stem
Contemporary debates on sustainability usually relies on standardised and normative categories, such as ‘social’ and ‘nature’, and on linear notions of time. This study explores a more complex perspective on the delicate borderlands between the ‘un-sustainable’ and the ‘sustainable’. A particular material and a particular place stand at the centre of attention: woollen Merino fibre on the South Am
Energy-intensive processing industries like the concrete industry form the base of the economy and account for a large part of global greenhouse gas emissions. Sectoral transformation to cleaner basic materials is therefore crucial, and institutional pressure to do so is increasing. However, socio-technical studies have not sufficiently addressed these sectors. This paper therefore sets out to ana
It is predicted that novel nanometer-sized structures incorporating nanoparticles will have a considerable impact on our lives during the coming decades. Engineered nanoparticles are already found in a number of commercially available products. However, many applications of these nanoparticles have only reached the stage of promising ideas or research demonstrations. The number of nanoparticle-bas
Popular Abstract in Swedish I denna avhandling studeras ledningsförmågan hos nanometer-stora kvantprickar tillverkade i halvledarmaterial. Halvledare är material vars ledningsförmåga ligger någonstans mellan ledare (metaller) och isolatorer. I halvledare kan ledningsförmågan ändras med elektriska fält, vilket har möjliggjort utvecklandet av halvledartransistorn. Utvecklandet av halvledartransistorThis thesis focuses on electron transport in single and double quantum dots defined in low-dimensional, narrow-band-gap III-V semiconductor materials. Fabrication schemes are presented for defining single and double quantum dots in lateral InGaAs/InP heterostructures, either by a combination of etching and local gating or solely by local top gating. The quantum dots are here electrostatically conf
BACKGROUND: Empirical knowledge around palliative care provision and needs of people with intellectual disabilities is extremely limited, as is the availability of research resources, including expertise and funding. This paper describes a consultation process that sought to develop an agenda for research priorities for palliative care of people with intellectual disabilities in Europe.METHODS: A
På 1970-talet stämde en grupp samer den svenska staten då de ansåg sig ha bättre rätt till ett geografiskt område kallat Skattefjällen. Samer är av svenska staten erkända som ett ursprungsfolk, och som en minoritetsgrupp. Skattefjällsmålet togs upp av Högsta domstolen 1981 och resulterade i ett prejudikat som sedan dess haft stort inflytande på de flesta mål som berört samers rättigheter. Syftet In the 1970s a group of Sami people sued the Swedish State claiming a better right to a geographic area referred to as the Taxed Mountain (Skattefjällen). The Sami people are recognised as an indigenous people, and a minority group, by the Swedish State. The Taxed Mountain Case (Skattefjällsmålet), that reached the Supreme Court (Högsta domstolen) in the year of 1981, resulted in a precedent that
