Search results

Mesosideriter är sällsynta sten-järnmeteoriter med ett gåtfullt ursprung. Deras ovanliga blandning av skorp- och kärnmaterial har föranlett många bildningsteorier under det senaste århundradet. Några frågor har avsett ursprunget till metallen, huruvida den kom från en annan himlakropp, eller från moderkroppens egen kärna, samt varför det finns så pass lite mantelmaterial. Nedslag har haft en centrMesosiderites are rare stony-iron meteorites with enigmatic origins. Their unusual mix of crustal and core materials have inspired many formation theories over the last century. Some of the outstanding questions have regarded the origin of the metal, whether it came from another celestial body or from within the parent body, and the absence of mantle material. The role of impacts has been central

Bakgrund: Ohälsosamma levnadsvanor ökar i samhället vilket kan leda till hjärt- och kärlsjukdom, cancer samt diabetes typ- 2. Tidigt förebyggande arbete kan förhindra uppkomst av sjukdom. Motiverande samtal (MI) är en metod som används för att motivera patienter med ohälsosamma levnadsvanor till förändring. Region Skåne initierade nyligen riktade hälsosamtal till 40-åringar för att förebygga ohäls

Numerous applications of membrane processes are feasible in pulp mills. The challenges inherent in these applications vary. High pH and high temperature call for ceramic membranes when treating spent pulping liquors, whereas low-cost membranes are needed when treating dilute process streams in mechanical pulp mills. Ultrafiltration has been used to recover lignosulphonate in sulphite pulp mills fo

Public Private Partnership, PPP, is a public procurement method involving the private sector used in several countries all over the world, now upcoming in Sweden. The UK, most prominent within this method, states that it offers good value for money, but the economic and financial benefits of PPP are still uncertain and subjects of debate. In order for the projects to be successful and to achieve v

Skogsskador och skogsdöd är ett växande problem i Europa. "Svarta Triangeln", som ligger i bergsområdet där Tysklands, Tjeckiens och Polens gränser möts, är en av de värst drabbade områdena. I dagsläget saknas kunskap för att kunna förklara skogsskadorna helt och hållet, men markförsurningen i området, som orsakas främst av förbränning av svavelrikt kol i de många kolkraftverken, är trolForest decline is an increasing problem in Europe. "The Black Triangle" area, situated in the mountainous region where the borders of Germany, the Czech Republic and Poland meet, is one of the worst damaged areas. The reasons for the forest dieback are not fully understood, but the soil acidification caused by the burning of sulphur rich coal in the region is considered a major cause. To

In my dissertation the method to describe semantic change used in the Swedish Academy dictionary (SAOB) is compared with cognitive semantic models of such a change. The work of SAOB is theoretically unbound in terms of overarching semantic theories, and the methods of describing word meaning and semantic change in the dictionary are rather develope

This chapter focuses on taxation in Africa since 1900. Using existing data and insights from the literature, the chapter documents taxes collected by colonial and post-colonial states, exploring what was taxed, the types of taxes, the tax revenue patterns and the socio-political contexts shaping taxation policies. It begins by discussing the fundamental principles of taxation and forms of direct a

Pancreatic ductal adenocarcinoma has one of the worst survival rates among adult cancers, with only 11% in the United States surviving five years after diagnosis. The majority of patients are diagnosed with late-stage disease, since early-stage pancreatic ductal adenocarcinoma is typically either asymptomatic or presents with non-specific symptoms. Pancreatic ductal adenocarcinoma thus remains a h

Abstract is not available

We have recently reported that the inner layers of the arteries, the intima-media complex, of common carotid artery, move as much in the longitudinal direction as in the radial direction, during the cardiac cycle. In order to study this phenomenon we have developed a high-resolution ultrasonic method that can simultaneously record both the longitudinal and the radial movements of the arterial wall

The metal beaker that was found in the house is a unique object. The shape arouses associations with late antique glasses. The beaker is covered with embossed gold bands with figure representations carried out in early Style I. The bands were probably produced around 500 AD. The body of the beaker might be contemporaneous or possibly also older, with the bands as a later addition. The beaker is co

[abstract missing]

The difference between a presumed distribution of flamelet position and a numerically simulated distribution of distance function (a signed distance to flamelet) is investigated. It is shown that even if the distribution of flamelet position is symmetrical and close to Gaussian, the distribution of distance function away from the mean flame position is skewed towards the mean position and the mean

An efficient method for increasing the dilution rate of brine water discharged into the sea is an inclined negatively buoyant jet from a single port or a multi-diffuser system. Such jets typically arise when brine is discharged from desalination plants. Two small-scale experimental studies were conducted to investigate the behaviour of a dense jet discharged into lighter ambient water. The first e