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The problem of spontaneous cutting tool failure, such as tool chipping and breakage, is becoming more and more important in the manufacturing technology. The sponataneous tool failure is usually associated with the stresses subjected on the tool during a metal cutting process. When the maximum stress acting in a cutting tool exceeds its critical stress, which is usually determined by tool geometry
Popular Abstract in Swedish Ekologin hos lavdagsvärmaren (Dysauxes ancilla) studerades inom den enda svenska populationen vid Beijershamn på Öland. Populationen utgör en isolerad förekomst på nordgränsen av artens utbredningsområde, som huvudsakligen är mellan- och sydosteuropeiskt. Arten är rödlistad som akut hotad. Resultaten visar att lavdagsvärmaren för närvarande endast förekommer inom ett 4 The ecology of the moth Dysauxes ancilla was studied in the only Swedish breeding area at Beijershamn, situated on the Baltic island of Öland. The population is a northern outpost, separated from the species´ continous distribution area in middle- and southeast Europe. There is a general opinion that there has been a reduction of the species distribution during the last decades, but no studies hav
Of 30 primary ankle fusions in patients with osteoarthrosis, 25 ankles underwent clinical evaluation by two independent observers. In 29 cases, two independent radiologists, unanimously found 26 ankles to be radiographically fused, and three not fused. The consistency between the two orthopaedic surgeons evaluations was somewhat lower. A complete consistency between the evaluations of all four obs
A novel approach for surface wave testing of pavements is presented. It is a non-destructive testing (NDT) technique that can be used to obtain the thickness and stiffness properties of the different layers in a pavement. With this method structural properties of the pavement can be mapped as a function of time and space, providing a valuable tool in pavement design and management. The technical d
Popular Abstract in Swedish Exponeringsskattning för att hindra uppkomst av belastningsskador Skador på muskler som uppkommer av olämpliga arbetsrörelser och arbetsställningar (belastningsskador) utgör ett stort problem i alla industrialiserade länder. Definitionen av vad som innefattas i begreppet arbetsskada varierar mellan olika länder, varför det är svårt att göra jämförelser. Kostnader för ar
This thesis is an approach to improve electric hybrid vehicles with respect to fuel consumption and to fulfil the future intended NOX emission regulations. It is based upon the conclusions made in the licentiate thesis Analysing Hybrid Drive System Topologies (Jonasson, 2002). The study in this thesis is restricted to a parallel hybrid vehicle equipped with a diesel engine, two electric machines
A sustainable development of the built environment asks for changes in urban residents’ mobility patterns. The extensive use of the car contributes to sedentary lifestyle and negative environmental impact in many respects. Children living in urban areas are faced with limits of their independent use of the environment both in terms of travel and outdoor play. Many parents hold favourable attitudes
The people bordering the Arabian Gulf, the Mediterranean Sea and the Red Sea rely more and more on seawater desalination for safe water supply. Desalination has advantages and disadvantages which to a large extent depend on the region, location, technology, impact and amount of fresh water production. In this region, some 60% of all desalination capacity is installed. The three regions areas repre
The processing and disposal of sludge from wastewater treatment plants is an important topic of increasing environmental, ecological, technological, economic and social concern. The large amounts of sludge produced represent an urgent problem today, new treatment methods being very much needed. Reducing the volume of sludge can be achieved either by decreasing the amounts of it produced during the
Popular Abstract in Swedish Varje år insjuknar mer än 8000 kvinnor i Sverige i bröstcancer, och 5 år efter diagnos är nära 90% fortfarande i livet. Trots att prognosen för majoriteten av patienterna är god, dör 1400 kvinnor årligen av bröstcancer. Till följd av detta pågår mycket forskningsarbete för att finna faktorer som bättre kan förutsäga prognos, prognostiska studier, men även för att finna
Popular Abstract in Swedish I denna avhandling belyses varför och hur frågan om arbetarnas bildning blev ett led i såväl borgerlighetens som arbetarklassens formering under andra hälften av 1800-talet. Arbetet utgår från ett teoretiskt perspektiv som bl a innebär att människor aktivt skapar sin klassidentitet i sina vardagliga liv. Undersökningens tyngdpunkt ligger på jämförande analyser mellan sThis dissertation deals with the question of why and how the issue of workers' education came to be part of both bourgeois and working class formation during the second half of the 19th century and how it contributed to the shaping of new social relations. The theoretical perspective is based on the concept of hegemony indicating that a leading class has to establish and maintain its leadership by
Background: The production of ethanol and other fuels and chemicals from lignocellulosic materials is dependent of efficient xylose conversion. Xylose fermentation capacity in yeasts is usually linked to xylose reductase (XR) accepting NADH as cofactor. The XR from Scheffersomyces stipitis, which is able to use NADH as cofactor but still prefers NADPH, has been used to generate recombinant xylose-
In order to increase the understanding of suicidal behaviour, the general aim of the thesis is to gain a profound knowledge of the suicidal individual, and hence to find and ensure a preventive strategy. This will be accomplished by finding and trying new methods for evaluation of suicide risk. The Suicide Assessments Scale, SUAS, and a new self-rating version, SUAS-S were tested. These scales ar
Allergic rhinitis is an inflammatory nasal disorder in which a range of different cells participates. A variety of approaches has been used to monitor nasal inflammation objectively to investigate disease processes and to evaluate the effect of therapeutic intervention. These approaches include nasal lavage, nasal cytology, and nasal biopsy, together with the more recently established measurement
Autoignition in SI engines is an abnormal combustion mode and may lead to engine knock which is an undesired phenomenon in SI engines. It may cause damage and it is a source of noise in engines. Knock limits the compression ratio of the engine and a low compression ratio means low fuel conversion efficiency of the engine. This thesis presents a theoretical investigation about the modeling of the e
Formation of incipient charnockite in Söndrum, SW Sweden and the Kerala Khondalite Belt (KKB), S. India is accompanied by zircon growth. The age of the dehydration event is constrained by dating newly formed zircon to 1397±4 Ma (2?, MSWD=1.7) in Söndrum and ca. 520-510 Ma in S. India by secondary ionization mass spectrometry (SIMS). The formation of incipient charnockites correlates with regional
Popular science summary Do metformin and phenformin cause toxicity to mitochondria of human blood cells? Metformin and phenformin are anti-diabetic drugs associated with lactic acidosis as a rare side effect. This side effect is thought to be due to drug-induced mitochondrial dysfunction. In this project, the mitochondrial toxicity of metformin and phenformin was assessed in human blood cells. I
