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OBJECTIVES: This study clarified the exposure-response relationships for the organic acid anhydrides (OAA) hexahydrophthalic (HHPA) and methylhexahydrophthalic (MHHPA) anhydrides and the development of specific immunoglobulin (IG) E and G antibodies and work-related symptoms. METHODS: In an epoxy resin-using factory, air levels of OAA were determined by gas chromatography-mass spectrometry. Occupa
The grocery market in Sweden is mainly divided between six different retailers who together have some 95% market share. The rest of the market is divided between thousands of different actors, selling groceries in other ways than the main retailers. This 5% market is interesting to investigate and the purpose is to identify the opportunities and barriers for those alternative food distributers. B
This thesis compares Auto Regressive Moving Average (ARMA) and Generalized Auto Regressive Conditional Heteroscedacity (GARCH) models for three metal commodities. ARMA models have an unconditionally non-random and constant variance, which typically serves well in effectively representing homoscedastic data. The GARCH models feature variable variance that is non-random when conditioning on the past
Using the Swedish Medical Birth Registry (MBR), obstetrical and demographic information was retrieved for 250 children with autism or Asperger syndrome who were born in Malmoe, Sweden, and enrolled at the local Child and Youth Habilitation Center. The reference group consisted of all children born in Malmoe during 1980-2005. Obstetric sub-optimality (prematurity, low Apgar scores, growth restricti
Prehistoric population structure associated with the transition to an agricultural lifestyle in Europe remains a contentious idea. Population-genomic data from 11 Scandinavian Stone Age human remains suggest that hunter-gatherers had lower genetic diversity than that of farmers. Despite their close geographical proximity, the genetic differentiation between the two Stone Age groups was greater tha
Polyurethanes and polycarbonates are widely used in a variety of applications including engineering, optical devices, and high-performance adhesives and coatings, etc., and are expected to find use also in the biomedical field owing to their biocompatibility and low toxicity. However, these polymers are currently produced using hazardous phosgene and isocyanates, which are derived from the reactio
Marine macroalgal (seaweed) polysaccharides are highly promising for next-generation applications in several industries. However, despite the reported comprehensive potential of these polysaccharides, commercial products are scarce on the market. Seaweed cultivations are increasing in number and production quantity, owing to an elevated global trend of utilization interest in seaweed. The extracti
Electromagnetic waves are widely used in society today for a multitude of applications. Design of electromagnetic devices and applications requires accurate methods for evaluating performance, which often means modern computational methods. While these methods have seen tremendous development in recent decades, it is still very important to perform measurements to validate the performance of devic
In order to keep up with the constant demand for higher data rates, the fifth generation of mobile communication (5G) introduced the use of mm-wave carrier frequencies from 24 to 71 GHz. Plenty of new frequency spectrum then became available, which has allowed for channel bandwidths of several hundreds of MHz. 6G is projected to continue this trend with even higher carrier frequencies and wider ba
Popular Abstract in Swedish Urinavledning utförs när den normala urinblåsan ej fungerar normalt eller måste avlägsnas p.g.a. cancer. Vid operation enl. Bricker sys urinledarna till ett isolerat tarmsegment ( konduktor ), vars ena ände mynnar på huden som en stomi. Över öppningen på huden har patienten sedan ett uppsamlingsförband för urinen, en ' påse på magen'. Kontinenta former av urinvägsrekonsIn a long-term prospective follow-up in patients randomized to an ileal or colonic conduit, with implantation of one ureter using antireflux technique and the other without, the fall in the mean total GFR exceeded the expected age-related decline. The fall in the mean separate GFR did not differ between refluxing and antirefluxing anastomosis. Patients with a continent caecal reservoir (antireflux
