Sökresultat

The stacked multi-level (SML) klystron modulator topology has been suggested as an alternative to conventional pulse transformer based topologies in an attempt to improve output pulse performance and reduce system size for long pulse applications. In this topology, a power converter chain including a high frequency transformer generates the output pulse in a pulse modulation/demodulation scheme, e

Aim: The aims of this study were to evaluate health-related quality of life (HRQoL) in children with sacrococcygeal teratoma and to explore the effect of the scar on physical, emotional and behavioral aspects. Methods: A cohort of children operated on for sacrococcygeal teratoma between 2000 and 2013 at Lund University Hospital, Sweden, and their parents were interviewed. HRQoL was evaluated with

The aim of this study was to establish a rapid method for in vivo quantification of a large range of flow velocities using phase information. A basic gradient-echo sequence was constructed, in which flow was encoded along the slice selection direction by variation of the amplitude of a bipolar gradient without changes in sequence timings. The influence of field inhomogeneities and eddy currents wa

Spent sulfite liquor (SSL) is a byproduct of the sulfite pulping process of wood. SSL usually contains monosugars and lignosulfonates, which are fermented to produce ethanol and dried to generate lignosulfonate salts. However, the SSL that was used in this work was derived from the first step of a 2-step sulfite pulping process of softwood under mild pulping conditions in the first stage of cookin

There is now a consensus in the literature that future improvements in outcomes obtained from cognitive behavioral therapy (CBT) for chronic pain will requireresearch to identify patient and treatment variables that help explain outcomes. The frst aim of this study was to assess whether pre-treatment scores on measures of psychological (in)fexibility, acceptance, committed action, cognitive(de)fus

The rennet-induced coagulation ability of milk is important in cheese production. For Swedish Red Dairy Cattle (RDC), this ability is reduced because of a high prevalence of noncoagulating (NC) milk. In this study, we simultaneously combined genetic parameters for NC milk, milk coagulation properties, milk composition, physical traits, and milk protein composition. Our aim was to estimate heritabi

Wheat bran arabinoxylan can be converted by enzymatic hydrolysis into short arabinoxylo-oligosaccharides (AXOS) with prebiotic potential. Alkali extraction of arabinoxylan from wheat-bran offers advantages in terms of yield and results in arabinoxylan with highly-substituted regions which has been a challenge to hydrolyse using endoxylanases. We show that this hurdle can be overcome by selecting a

Preeclampsia is one of the most common causes of perinatal and maternal morbidity/ mortality. One suggested environmental risk factor is exposure to endocrine-disrupting pollutants such as per-and polyfluoroalkyl substances (PFAS). The present case-control study in southern Sweden aims to investigate the hypothesized association between serum concentrations of PFAS in early pregnancy and the risk

In order to produce a more efficient design of a compact turbine driving a cryogenic engine turbo-pump for a satellite delivering rocket, a new supersonic loss model is proposed. The new model was constructed based on high-quality published data, composed of Schlieren photographs and experimental measurements, that combined provided a unique insight into the mechanisms driving supersonic losses. U

Fulltext är ej tillgänglig i elektronisk form. För lån/kopia av tryckt uppsats kontakta Medicinska fakultetens bibliotek, Lunds universitet

Personal computers (PC) have become an indispensable product in modern life. Along with the growing volume of computers, the environmental burden and impact at the end-of-life phase known as e-waste become significant. Considering the material-intensive nature of the production of computers, and the environmental burdens caused by landfills, incinerations and improper recycling activities, persona

Cross-border integration between Greece, Turkey and Bulgaria has been recently dominated by traditional perception of political diplomacy that overrides the considerations for economic cooperation. This project suggests that more in-depth case analysis of the Evros-Maritza-Meric Euroregion will elucidate the evolution of this concept. The existence of long-term barriers in the cross-border region

Key words: Corporate environmentalism, ecologic-economic decision-making, CSR worldviews Purpose: To explore environmental decision-aming processes at managers at Skanska, also with regard to enviornmental decison-making conceptualizations in theory. Method: The research of the thesis is based on a qualitative approach through the use of semi-structured and open interviews. Furthermore an interpre

"The technology for planning and delivering radiotherapy has in the last decade undergone some revolutionary development and it is now possible to perform complex treatments such as stereotactic treatments and treatments using dynamic wedges, multileaf collimator and intensity modulation. The more precise limits surrounding the PTV have made it of utmost interest to be able to verify calculat

Climate change has emerged as the most prominent of the global environment issues and there is a need to evaluate its impact on the agriculture. General Circulation Models (GCMs) which are considered as the most advance tools for estimating future climate change scenarios operate on coarse resolutions. It is for this reason the climate change model MAGICC coupled to SCENGEN developed by the IPCC w

The aims of the present study were to implement and evaluate a three-session Acceptance and Commitment Therapy (ACT) stress management intervention in a non-clinical group of university students (N = 25) and to investigate the importance of practice in an ACT-intervention. A design with pre-test and double post-test was chosen. A comparison was made between a nine-hour ACT-intervention containing

The study tries to look at the impact of microfinance on the lives of the extreme poor people. There are different views on microcredit/microfinance as a powerful development tool regarding its success in developing the lives of the extreme poor and sometimes these views are contradictory. The purpose of the study was to observe the social and financial changes that have occurred also with an effo