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Det huvudsakliga syftet med detta arbete var att simulera tredimensionella flödesmönster i tankar för lagring av vatten. De praktiska avsikter med simuleringarna var att identifiera vattenkvalitetsproblem relaterade till bristande vattenutbyte. De vattenmagasin som reservoarer vid Norra Ugglarp i Skåne utgör undersöktes i en särskild fallstudie. I denna avhandling har den öppna CFD källkoden OpenFThe main purpose of this thesis was to simulate the three-dimensional flow patterns in tanks for water storage. The practical intentions of the simulations were to identify water-quality problems related to insufficient water exchange. The water storage reservoirs at Norra Ugglarp in South Sweden were investigated as a special case study. In this thesis, the open source CFD software OpenFoam was c

En viktig princip i svensk företagsbeskattning är den evigt rullande kvittningsrätten. Den innebär att ett företag som får ett underskott ett beskattningsår kan då spara det och kvitta det mot framtida vinster i samma verksamhet. I Inkomstskattelagens 40 kap finns bestämmelser som begränsar avdragsrätten för underskott. Begränsningarna blir tillämpliga när det sker en ägarförändring för underskottAn important principle in swedish tax law is the possibility to equalize loss by saving deficits from one fiscal year and use it to set off against future profits. In the 40th chapter of the swedish income tax act there are limitations for using the accumulated losses. When there has been an ownership change in the company with the deficits, the limitations apply. If the ownership change means tha

Background: There is paucity of data regarding the significance of high percentage of premature ventricular contractions (PVCs) in healthy children and their impact on left ventricular (LV) function and the risk of ventricular arrhythmias. The purpose of this study was to assess the prevalence of LV systolic dysfunction in children with frequent PVCs and determine whether PVC characteristics were

Background: Due to advances in hip arthroscopy, the number of surgical procedures has increased dramatically. The diagnostic challenge in patients with longstanding hip and groin pain, as well as the increasing number of hip arthroscopies, may lead to a higher number of patients referred to tertiary care for consideration for surgery. Therefore, the aims were: 1) to describe the prevalence of hip-

The literature on regional development increasingly recognizes that agency is an essential but understudied factor in processes of regional structural change. However, much like the fundamental debates in social sciences about agency and structure, work in this field has often remained theoretical. Investigating the role of agency in regional economic development, systematically and at the micro-l

Osteopontin (OPN) plays a role in inflammation via recruitment of neutrophils and tissue remodeling. In this study, we investigated the distribution of OPN-expressing cells in the airway epithelium of normal lung tissue and that from patients with chronic obstructive pulmonary disease (COPD). OPN was detected on the epithelial cell surface of small airways and in scattered cells within the epithel

The transport of fallout-90Sr has been investigated in the food-chain: Lichen-reindeer-man during 1961-1969. The maximum levels which occurred in lichen during 1963-1965 were about 13 nCi/kg dry wt. The90Sr-level in the lichen-carpet decreased to about 5 nCi/kg dry wt. in 1967-1969. The effective half-time of 90Sr in the lichen-carpet was estimated to be 2.5 ± 0.8 a. The vertical distribution of90

The inverse tangent function can be used to approximate pi. When approximating pi, the convergence of infinite series or Products are of great importance for the accuracy in the digits in pi. This thesis will present historical Formulas used to approximate pi, especially Gregory-Leibniz and Machin's. Also, the unique Machin two-term formulas will be presented and discussed to show that Machin&

Introduction: The rapid expansion of mobile phone access has enabled low-cost SMS interventions to support adherence to antiretroviral therapy (ART). Although text messaging improves adherence and retention in HIV care, its cost-effectiveness for enhancing quality of life remains uncertain, particularly among adolescents in resource-limited settings. This study evaluated whether SMS reminders impr

Infection with high-risk human papillomavirus (HPV) is causally related to cervical, vulvar and vaginal pre-invasive neoplasias and cancers. Highly effective vaccines against HPV types 16/18 have been available since 2006, and are currently used in many countries in combination with cervical cancer screening to control the burden of cervical cancer. We estimated the overall and age-specific incide

Four tree species in Oregon (USA) were studied to examine physiological and structural responses to drought stress: ponderosa pine (Pinus ponderosa) and western juniper (Juniperus occidentalis) in a semi-arid ecoregion, and Douglas-fir (Pseudotsuga menziesii) and white oak (Quercus garryana) in a mesic coastal ecoregion. This investigation compared the response of paired healthy and stressed (<10%

Talented employees are important for companies, and graduate programs are designed to internal educate talented students to make them a strong resource for the company. A problem is that trainees tend to leave the company after the program. This master thesis investigates how trainees become motivated, during and after the program, to retain within the company and where the perceived expectation g

The large-scale expansion of wind energy is an important element of the energy transition in Germany and a necessary tool to mitigate climate change. Yet, it is contested in many rural settings across the country. This thesis builds on the argument that rural areas are a crucial factor for the energy transition. They serve as the sites that host most of the infrastructure needed in the transition