Ett vanligt förfarande i parapsykologiska s.k. ganzfeldexperiment är attmed hjälp av vitt brus, som spelas upp i hörlurar, försöka omslutaförsökspersoner i ett slags totalt och oföränderligt perceptuellttillstånd. I föreliggande studie undersöks konsekvenserna av attanvända vitt brus som bakgrundsljud. 30 försökspersoner har lyssnattill åtta ljudslingor innehållandes fyra typer av brus vid två olikaljudnivåer, för att sedan i ett enkätformulär uppskatta hur dessa ljudpåverkat dem. Resultatet visar på signifikanta effekter av så välbrustyp som amplitud, och dessutom en signifikant interaktionseffektdem emellan.

Selenium (Se) is an essential trace element that is involved in several physiological functions in mammals. Mostly, Se is bound to proteins, many of them with enzymatic functions. A group of seleno-depending enzymes, glutathione peroxidases (GSH-Px?s), are important as antioxidants and protects against free radicals. The activity of GSH-Px is strongly regulated by Se storage in the liver.

KKS includes difficulties hearing speech in background noise although results from pure toneaudiometry are normal. The condition is also called ?Obscure Audiotory Dysfunction? and?Auditory disability with normal hearing?. KKS affects a heterogeneous group. We believethere is a need for synthesis of existing studies to acknowledge the condition in Sweden toimprove rehabilitation for the affected individuals.

Rapid population growth and the fact that phosphorous is a limited resource implies that the question regarding an efficient use of phosphorus is of great importance, and consequently,that the phosphorous use efficiency should be as high as possible. The view on phosphorous use efficiency, and how this is calculated, has varied over time. This has had great implications on what type of research that has been conducted, which have resulted in an inconsistency between the academic?s view on the subject and recommendations received by farmers. The purpose of this paper is to calculate the phosphorus use efficiency in the Swedish long term fertility experiments.

The purpose of this study was to develop two types of prediction models for Scots Pine and Norway Spruce. The first type for calculation of the stump diameter under bark the year the tree reached breast height (Dstubh130). The second type for calculation of the annual difference, e.g. the number of growth years between stump height (0.2 m) and breast height (1.3 meters above ground level). The primary thought with these prediction models is to obtain the breast height age in the trees on basis of the number of annual rings at stump.

This Masters thesis work describes a comparison between two different methods for estimation of the down channel (base station to mobile subscriber) in Wide-band Code Division Multiple Access (WCDMA). The first estimation method, Optimal Feed-forward Channel Estimation (OFCE), is a conventional method that bases the estimates on data that is known to both sender and receiver, so called pilots. The second method, Decision Directed Channel Estimation (DDCE), is an elaboration of OFCE. It also uses user data for estimation. Simulations show that DDCE, in comparison to OFCE, does not attain an improvement in signal-to-noise-ratio (SNR) for high bit error rates (BER). An improvement is only seen when the BER becomes much lower than what is common in real situations. In conclusion DDCE is complicated, involves many mathematical operations and gives insignificant improvement of SNR when BER takes common values. It is legitimate to question if it is possible to use the method in a real mobile phone system..

I did my degree project together with Universeum AB. The project had the work title: children?s world and the aim were to give children between 3-8 years old a place that was especially made for them. With their interests and needs in mind the area should trigger play but also learning through a well planned pedagogical environment.I did this project because I thought this was an excellent opportunity to really practise my new gained skills I had learned during my two years in CCD (Child Culture Design). It also gave me the opportunity to actually see how well my knowledge was working when it was put to the test, and I did learn a lot from this.Together with a crew of 6 people I developed and designed the area.

The purpose of this paper is to investigate how a small company manages its information, primarily the organization of digital documents. The two dominating themes are classification and information politics, the former in the context of a corporate environment and the latter to help us to describe the situation at the company. The method used has involved observation of the company's current computer network structure and also interviews with six employees at different levels in various departments at the company. The result of our investigation has been the realization that, although logical structure is important when organizing documents in a digital environment, it is also necessary to have rules regarding its implementation..

In the fluidized bed furnace at Rönnskärsverken, Skelleftehamn, sulphur-containing ore concentrates are roasted in order to remove about 50% of the sulphur in the incoming ore concentrate. This occurs in order to reach the goal of a matte containing 55% of copper in the following smelting process. At the same time as the ore concentrate is partially roasted pollutions as arsenic, antimony and bismuth are expelled. Earlier made thermodynamic calculations of equilibrium suggested that calcium and magnesium form stable compounds with arsenic and thereby inhibit expellation of arsenic in the fluidized bed furnace, an element that is undesired. The purpose of this thesis work was to gain knowledge of the mechanisms behind the formation of these stable arsenic compounds.

Cambodia is located in Southeast Asia with a tropical monsoon climate and distinctive wet and dry seasons. Poverty is a widespread problem in Cambodia and 30 percent of the population were classified as poor in 2009. About 80 percent of the populations live in rural areas where poverty is an even greater problem. In agriculture, rice cultivation is dominating and the crop is cultivated on 85 percent of the arable land. Livestock keeping is also a traditional part of Cambodian agriculture.

Background: Sweden is a country where vitamin D deficiency seems to be common, partly because of its geographical position, which reduces the availability of UVB radiation, but also that people avoid sunlight due to increased skin cancer risk. Research shows that vitamin D plays an important role in the prevention of many diseases such as cancer as well as autoimmune and neuropsychiatric diseases.Vitamin D is a fat soluble pre-hormone and a collective name for closely related compounds which act as hormones after undergoing a transformation in the body.Humans can utilize vitamin D through diet and produce it in the body by exposing the skin to the sun. Previous observational studies and epidemiological studies have established a hypothesis that there seems to be an association between vitamin D supplementation and reduction of depressive symptoms.Objective: The aim of this study was to investigate if vitamin D supplements may decrease depressive symptoms.Methods: This work is organized as a literature review and article search is made in the database PubMed in January 2012. Keywords used were ?vitamin D and depression? and inclusion criteria were: randomized clinical trials, be conducted on humans, written in English.

This thesis is examining if the management, the managers and the employees have a differentpoint of view regarding the purpose and the expectations of a performance review. Additionally it is an assignment from the Swedish company Flexlink AB with the purpose of constructing a new template for their performance reviews. The assumption is that if you manage to create one template for performance reviews that meets the expectations at all levels of the organization, it will contribute to create a meaningful performance review.We decided to study this from an organizational cultural perspective, since the organizational culture plays a significant part in performance reviews. Performance reviews are systematic conversations between employees and managers related to planning, information exchange and developing the relationship. Previous research indicates that if employees are satisfied with their performance reviews, they prone to be more satisfied with their work situation and have a higher organizational commitment.

Master thesis work at ITN (Department of Science and Technology) in the areas of A/D-construction and RF-circuit design. Major goal of project were to research suitable possibilities for implementations of direct conversion in transceivers operating in the 160MHz band, theoretic study followed by development of components in the construction environment Cadence. Suitable A/D- converter and other important parts were selected at the end of the theoretic study. Subsampling technique was applied to make A/D sample requirements more realistic to achieve. Besides lowering requirements on A/D-converter it allows a more simple construction, which saves more components than subsampling adds.

In this study the hygienic quality of minced moose meat was examined with regard to the prevalence of different bacteria. The methods used are described in NMKL, "Nordic Method Committee for Food". The results show that the levels of Escherichia coli and coagulase positive staphylococci in the meat are too high. The reason for this might be environmental factors, such as high temperature and humidity during the time when the carcasses are hanging and when the meat is cut up..

This thesis investigates and analyses the social media strategy of eight companies. How the companies measure and evaluate their activity and investments in social media channels in general, and Facebook in particular is studied through qualitative interviews. The findings are then compared and analysed. Findings indicate that companies' social media presences to a large extent are dependent on individual employees with high levels of interest for the area and that companies that have integrated social media into their others operations see more value from their efforts..