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The plant enzyme sucrose synthase (SuSy; EC 2.4.1.13) catalyzes the reversible conversion of sucrose and UDP into UDP-glucose (UDP-Glc) and fructose. The enzyme exists in different isoforms and is both located in the cytosol, membrane-bound and associated to the actin cytoskeleton. We here investigate sucrose synthase from tobacco (Nicotiana tabacum L.) BY-2 heterotrophic cell suspensions. Two dif
I denna avhandling används samtalsanalys (”conversation analysis”) för att studera ”riskstrategier” i samtal mellan lärare, elever och föräldrar i grundskolan. Materialet består av 80 samtal som insamlats vid två olika tidpunkter: 45 st. inspelade 1992–93 (kvartssamtal, eller den mer formella benämningen enskilda samtal) och ytterligare 35 st. inspelade 2004 (utvecklingssamtal, den benämning som gIn this thesis, conversation analysis (CA) is applied to study “risk strategies” in parent-teacher-student conferences in the Swedish nine-year compulsory school. The material consists of 80 conferences collected at two different points in time: 45 from the period 1992–93 (at that time called kvartssamtal, lit. “quarter of an hour conference”) and another 35 collected in 2004 (at the present time,
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During two consecutive years 607 individuals with lower limb fractures were diagnosed. Half of the individuals, 315, were women and only 14 of them had an earlier registration for alcoholism. In the 292 men, however, 73 men or 25%, had been registered at the Department of Alcohol Diseases at least once during the 13 years of observation, the highest registration frequency (30%) was noted in the ma
Abstract Azoospermia is observed in 10-15% of infertile men and 60% of these cases are classified as having non-obstructive azoospermia (NOA). NOA results from testicular failure, and one of the causes of this is the presence of varicocele. Varicocele is found in 5-10% of men with NOA and its repair is associated with the appearance of spermatozoa in the ejaculate in 21-55% of cases. This review d
We consider construction and realization aspects of encoders and decoders for braided block codes (BBCs), which are a powerful class of iteratively decodable codes. An efficient encoder is proposed as well as a pipeline decoder realization. Also, upper and lower bounds on the free distance of BBCs are derived.
Atmospheric new particle formation (NPF) is an important phenomenon in terms of global particle number concentrations. Here we investigated the frequency of NPF, formation rates of 10 nm particles, and growth rates in the size range of 10–25 nm using at least 1 year of aerosol number size-distribution observations at 36 different locations around the world. The majo
An overview is given of general-purpose event generators, especially PYTHIA and HERWIG. The current status is summarized, some recent physics improvements are described, and planned future projects are outlined.
Cardiovascular disease is the leading cause of death in the western world. With the application of theoretical physics to the clinic, a variety of imaging technologies are available to the physician for diagnosing and accurately quantifying disease progression. These tools can influence how therapies are applied and impact patient outcome. Radiographic methods based on x-rays are used for diagnosi
The metabolism of individual polyunsaturated fatty acids (PUFA) may be influenced differently by nutritional status and nutritional intake. In normal rats, radioactive arachidonic acid (20:4(n-6), is preferentially retained in tissue phospholipids compared to linoleic (18:2(n-6), or eicosapentaenoic acid (20:5(n-3). This study compares the fate of 20:4(n-6) and 20:5(n-3) acids in essential fatty a
In the management of Parkinson's disease, reliable diagnostic and prognostic biomarkers are urgently needed. The diagnosis of Parkinson's disease mostly relies on clinical symptoms, which hampers the detection of the earliest phases of the disease—the time at which treatment with forthcoming disease-modifying drugs could have the greatest therapeutic effect. Reliable prognostic markers could help
The purpose of this investigation was to evaluate the bone turnover by using bone metabolic markers in relation to previous fracture history and independent of bone mass. Patients and controls were recruited from a population-based study of 193 women, all living in the same city and aged 60, 70, and 80 years. The bone mineral content (BMC) was measured bilaterally in the distal forearm by single-p
Popular Abstract in Swedish Denna avhandling analyserar frågor som berör tillfälliga jobb på den svenska arbetsmarknaden under perioden 1990-1999. Ett viktigt bidrag i avhandlingen är att den stora gruppen tillfälliga jobb delas upp i mindre undergrupper för att ta i beaktande den heterogenitet som finns mellan olika former av tillfälliga jobb. En röd tråd som löper genom hela avhandlingen är fokuThis thesis analyses different aspects of temporary jobs in the Swedish labour market during 1991-1999. Throughout the thesis we put special focus on differences between the genders, and differences between native-born and foreign-born workers. In chapter 1, An Introduction to Temporary Jobs in Sweden, we describe the evolution of different types of temporary jobs in Sweden during the 1990s, we re
A method is presented for the determination of aromatic amines in aqueous extracts of polyurethane (PUR) foam. The method is based on the extraction of PUR foam using aqueous acetic acid (0.1%, w/v) followed by determination of extracted aromatic amines using hydrophilic interaction liquid chromatography (HILIC) and tandem mass spectrometry (MS/MS) with positive electrospray ionisation. The inject
Q-factors are often used to quantify bandwidth performance of resonant structures. The Q-factor is defined as the quotient between the stored and dissipated energies. The time average dissipated energy is reformulated in the dissipated power and is well defined. The definition and evaluation of the stored energy is much more challenging and there are presently several proposals but none is applica
Aims/hypothesis: Coronary artery disease (CAD) is a common complication among individuals with diabetes. A better understanding of the genetic background of CAD in this population has the potential to suggest novel molecular targets for screening, risk assessment and drug development. Methods: We performed a genome-wide association study of CAD in 15,666 unrelated individuals (3,968 CAD cases and
