Klimatförhållandena har stor betydelse för om en art kan ha livskraftiga populationer på en viss plats, både genom direkta effekter på organismerna, och indirekta effekter på andra arter i ekosystemet, det vill säga arter som den är beroende av, predatorer och konkurrenter. Den biologiska mångfalden är viktig för ekosystemens förmåga att klara klimatförändringar. Vårt användande av landskapet ka

Popular Abstract in English Typically, when we speak of ionic solutions we mean a salt (as solute) dissolved in some liquid (the solvent). In this thesis, we predominantly consider ionic solutions for which there is no solvent---room-temperature ionic liquids (RTILs). It follows that these liquids have a large concentration of charged particles, a property that causes them to be effective electrRoom-temperature ionic liquids (RTILs) are compounds composed entirely of ions, which are liquid at temperatures below 100 degrees Celsius. Their high ionic strength and strong coupling make them useful for a number of applications, e.g. as electrolytes in supercapacitors. These properties also make them interesting subjects for theoretical research, as the canonical theories of the electrical dou

Conventionally, minimax spatial/spectral filters for microphone arrays are designed by first discretizing the spatial and frequency domains into a finite number of grid points and then performing the optimization over these points. The drawback with this approach is that the response of the spatial/spectral filters in between the grid points can be poor. More recently, an approach that performs th

As reported in several studies, even though properly designed, it is possible that groin systems not only cause down-drift beaches to erode, but also contribute to the generation of rip currents. These rip currents run along the updrift side of the structure, moving sediment offshore where it may be, at least in part, lost from the system. It is well known that the directionality of the incident w

It is often suggested that the emittance coupling of a storage ring should be adjusted to the so-called diffraction limit corresponding to the shortest wavelength of interest. For 1 Å radiation this leads to a typical requirement of 8 pm rad vertical emittance. In ultralow-emittance storage rings like the MAX IV 3 GeV storage ring this corresponds to a comparably large setting of the emittance cou

Popular Abstract in Swedish Denna avhandling handlar om stora nätverk av oscillatorer. En oscillator är ett system som beter sig periodiskt. Speciellt handlar avhandlingen om oscillatorer som har ett typiskt beteende. En egenskap som varje sådan oscillator har är den naturliga frekvens med vilken beteendet upprepas. Om vi stör oscillatorn, så återvänder den så småningom till sitt typiska beteende.This thesis deals with large networks of limit cycle oscillators. A limit cycle oscillator is a dynamical system that has a periodic attractor in phase space, and is defined in continuous time. To each such oscillator one can associate a natural frequency. Virtually all biological systems that show periodic oscillations can be seen as limit cycle oscillators. The same is true for oscillating mecha

This paper presents a study with the intent to examine the opportunities provided by creating and using simulation models of software development processes. A model of one software development project was created through means of system dynamics, with data collected from documents, interviews and observations. The model was simulated in a commercial simulation tool. The simulation runs indicate th

The focus of the thesis is on chemically cross-linked hydrogels which drastically change their volume when immersed in solutions of different ionic surfactants (with or without added salt). The two main questions addressed are: (1) How useful are simple gel swelling experiments to the study of polymer-surfactant interactions?, and (2) How does the volume of a cross-linked polymer gel change when i

Intervju 28/4 2011 med anledning av publiceringen av min doktorsavhandling, "Fänad i helgade grifter. Svensk djurgravpoesi 1670-1760"

Waste in form of fat, oil and grease (FOG) is generated where food is prepared or consumed, e.g. in households. If collected properly, the household FOG could be interesting for biogas production. This fraction has been source-separated and collected separately in a residential area in Malmö, Sweden. The biogas potential has been evaluated by mesophilic digestion experiments. Both single-substrate

The report describes and analysis the water and sewerage system in five European countries from a resource based view I denna rapport intresserar vi oss för begreppet ’uthållighet’ (sustainability) inom ramen för vatten- och avloppsverksamheter. Utgångspunkten är emellertid varken teknisk eller ekologisk utan denna studie görs utifrån ett strategi- och organisationsperspektiv. Ambitionen är att t

An experimental and computational study of the nearwall combustion in a Homogeneous Charge Compression Ignition (HCCI) engine has been conducted by applying laser based diagnostic techniques in combination with numerical modeling. Our major intent was to characterize the combustion in the velocity- and thermal boundary layers. The progress of the combustion was studied by using fuel tracer LIF, th