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Popular Abstract in Swedish Acceleratormasspektrometri, AMS, är en relativt ny metod för att bestämma extremt låga koncentrationer av såväl radioaktiva som stabila atomer. Metoden innebär att man med kärnfysikalisk teknik räknar atomerna en och en. De främsta fördelarna med AMS, jämfört med konventionella metoder, är att mycket små provmängder kan analyseras och att mättiden är kort. Mängden av eAccelerator mass spectrometry (AMS) is a highly sensitive method for counting atoms and it is used for detecting very low concentrations of both radionuclides and stable isotopes in small samples. The two major advantages of the AMS method are that the required amount of sample material is very small, but also that the efficiency is rather high, it takes less than an hour to analyse a sample. The

Popular Abstract in Swedish Det är dans i parken ikväll: Om samverkan mellan näringsliv och akademi med forskningsparken som mäklande miljö och aktör Många anser att gapet mellan näringsliv och akademi behöver överbryggas. I olika sammanhang konstateras dock att det finns svårigheter att få till stånd täta relationer parterna emellan. Därför har en rad olika initiativ tagits för att underlätta läThe aim of this thesis is to examine interaction between the business community and academia, and consider the Science Park as a brokering environment and actor. The bulk of park-oriented research, like park-related practice, is based on network theory and thinking. Taking such an approach, it is natural to study the intensity and nature of the interactions of the involved parties – in this case,

Popular Abstract in Swedish I min avhandling har jag valt att studera kväveoxid (nitric oxide, NO) i de delar av det centrala nervsystemet (CNS), dvs hjärna och ryggmärg, som är inblandade i styrningen av vattenbalans och vattenkastning (miktion). NO, en gas och 1987 identifierad som en fysiologisk signalmolekyl bla i CNS, kan dock ej studeras i nervceller pga sin korta livslängd. Den molekyl jag

Popular Abstract in Swedish Många nya läkemedel har en mycket låg löslighet i vatten vilket medför att det behövs stora mängder vatten (ibland 10 tals liter) för att lösa upp en tillräcklig mängd av läkemedlet. Detta gör det till exempel omöjligt att ge medicinen som en injektion direkt i blodet. En möjlig lösning på detta problem är att lösa upp läkemedlet i en s. k. mikroemulsion istället. En mi

Popular Abstract in Swedish Denna avhandling presenterar några reglertekniska tillämpningar i elkraftsystem. Tillämpningarna är: hur likströmskablar påverkar båtrafik som använder magnetkompasser; frekvensmätning i elkraftsystem; algorithmer för datorbaserade reläskydd; koppling av aktiv last för att dämpa effektpendlingar.This thesis presents some control applications in electric power systems. The work consists of the four parts: interaction between DC cables and ship steering autopilots; frequency estimation; computer relaying; field tests using load switching to damp power oscillations. The first three parts are based on four papers that are given in Appendix A-D. The thesis presents supplementary text to these

Saccharomyces cerevisiae produces ethanol efficiently from the hexose sugars in lignocellulose hydrolysates, but it can not utilise pentose sugars such as xylose and arabinose. Stable xylose-utilising S. cerevisiae strains obtained by integration of the Pichia stipitis genes encoding xylose reductase (XR), xylitol dehydrogenase (XDH) and xylulokinase, exhibit low ethanol yields when utilising xylo

When developing applications for end-user nodes in distributed systems, it is not unusual to find that the business logic part of the solution is relatively inexpensive to develop. The resource intense parts of the solution are more likely to be those of presenting the functionality provided by the node to the end-user, and of connecting the node with the rest of the system. By considering systems

1. Recent changes in European agricultural policy have led to measures to reverse the loss of species-rich grasslands through the creation of new areas on ex-arable land. Ex-arable soils are often characterized by high inorganic nitrogen (N) levels, which lead to the rapid establishment of annual and fast-growing perennial species during the initial phase of habitat creation. The addition of carbo

An improved Volume of Fluid (VOF) method is presented which is applicable to high density ratio 3D flows for a large range of bubble Reynolds number (Re). The method is based on the Navier-Stokes equations for incompressible multi-phase flows which are discretized on a Cartesian staggered grid. The multi-grid technique together with the pressure-velocity coupling scheme for multi-phase flows have

By exposing photosystem II (PSII) samples to an incrementing number of excitation flashes at room temperature, followed by freezing, we could compare the Mn-derived multiline EPR signal from the S-2 oxidation state as prepared by 1, 5, 10, and 25 flashes of light. While the S-2 multiline signals exhibited by these samples differed very little in spectral shape, a significant increase of the relaxa

AiM To describe factors associated with an increased chance of survival among patients suffering from an out-of-hospital cardiac arrest in Sweden. Patients and Methods All patients suffering from an out-of-hospital cardiac arrest, which were not crew witnessed, in Sweden and in,whom cardiopulmonary resuscitation (CPR) was attempted and who were registered in the Swedish Cardiac Arrest Registry. Th

Two quasi steady-state solute transport experiments were carried out in a loamy sand under field conditions. The flux was 40 mm/d in experiment I and 18.7 mm/d in experiment 2. Both water content (theta) and resident concentration (C-r) measurements were taken using 64 time domain reflectometry probes at depths ranging from 0.05 to 0.90 m. The C-r measurement was calibrated in situ for each probe

We used exposure to microwaves from a global system for mobile communication (GSM) mobile phone (915 MHz, specific absorption rate (SAR) 37 mW/kg) and power frequency magnetic field (50 Hz, 15 mu T peak value) to investigate the response of lymphocytes from healthy subjects and from persons reporting hypersensitivity to electromagnetic field (EMF). The hypersensitive and healthy donors were matche