In metabolism Mg plays an important role because it affects many cellular enzymes in the body. The energy metabolism and protein synthesis are dependent on Mg as an enzyme activator, Mg is also involved in the synthesis of RNA and DNA. Absorption of Mg primarily takes place over the ruminal epithelium in ruminants. The main storage of Mg is in the bones but that can only be reached if the cow is in great need of calcium or phosphorus, it's a hormonal regulated process that induces catabolism of bones. Free and available sources of Mg are found in soft tissues and in the extra cellular fluids that includes cerebrospinal fluids and blood.

Tidigare forskning har visat att svenska stridspiloter har uppvisat en anmärkningsvärt hög förekomst av depressions- och ångestsymptom, vilket både riskerar att minska effektiviteten hos de svenska luftstridskrafterna och kan innebära en fara för flygsäkerheten.Detta arbete syftar till att underlätta beslutsfattandet kring problemet genom att skapa ett bättre underlag för att förstå de bakomliggande orsakerna. Studien undersöker när under karriären symptomen uppkommer samt jämför mellan olika pilotkategorier för att skapa en bättre förståelse för hur problemen uppstår och därmed vilka åtgärder som kan vidtas för att förhindra detta.En kvantitativ enkätundersökning användes för att undersöka förekomsten av depressions- och ångestsymptom bland svenska strids-, transport- och helikopterpiloter under deras första fem utbildningsår. Enkäten baserades på HADS-skalan och skickades till 158 personer, varav hälften var piloter.Resultatet av studien indikerar att den höga förekomsten av depressions- och ångestsymptom uppkommer senare i stridspilotkarriären. Stridspiloterna uppvisade dessutom en lägre förekomst av depressions- och ångestsymptom än en icke-flygande kontrollgrupp. Dessa resultat pekar i sin tur mot att miljöfaktorerna spelar en större roll än de genetiska faktorerna vid uppkomsten av symptomen.

The world we live in becomes more globalized as a result of new communication media. Communication occurs over greater distances which leads to increased travel. In the report AR5, by IPCC, it is showed that the human impact of climate change is clear and that something has to be done. Therefore its very important to change the human impact. A part of it is to change the way we travel within the service which leads to the purpose of the thesis.

Ma?nniskor har de senaste a?rhundradena bidragit till o?kade emissioner av klimatgaser, vilket i sin tur har bidragit till den klimatfo?ra?ndring som idag upplevs. Jordbruket sta?r fo?r en stor del av dessa emissioner och i takt med att befolkningen o?kar sa?tts ytterligare press pa? jordbruket att kunna fo?rse denna befolkningso?kning med livsmedel. Samtidigt o?kar detta a?ven pressen pa? miljo?n.

Undersökningens resultat visar att det finns betydande kostnadsbesparingar att göra vid införandet av en ny metod för askåterföring. Den nya metoden medför betydligt mindre transporter vilket leder till ett reducerat utsläpp av koldioxid och andra ämnen som har en negativ miljöpåverkan.I den nya metoden utnyttjas i viss utsträckning timmerbilarnas lediga kapacitet för transport av aska ut till spridningsområdet vilket då ökar chansen till högre lönsamhet för åkerinäringen..

A growing number of cities and municipalities in Sweden begin to work with city models in 3D. For the most part the models are used for visualizations of ongoing planning processes, but also for the analysis of noise, shadow studies and environmental disaster simulations.Gothenburg continues to develop the use of 3D maps in municipal operations and is demanding a way to create building elements (walls), which generates in 3D buildings, from roof constructions that are mapped from the primary map. A method has been investigated in the present study. The results are then presented as a 3D model of buildings, along with a terrain map that will facilitate the localization of the area. The created 3D buildings are then compared with roof-data from the primary map to see how well they harmonize with each other.

This thesis compares different methods for risk assessment of a creosote contaminated site in Vansbro, Dalarna. In a complementary study the importance of using representative data for calibration and validation of stationary groundwater models is discussed. The time dependency between surface water levels and groundwater levels on the site in Vansbro is evaluated by step response analysis. The results show that the groundwater levels reflect only long-term variation in the surface water levels. Hence the use of such long-term means for calibration and validation of the stationary groundwater models is the only theoretically defendable alternative.As a first step in the comparison of risk assessment methods the degree of contamination is evaluated on the basis of generic guideline values for contaminated soils, developed by the Swedish Environmental Protection Agency.

Timber floating operations in Scandinavia during the 19th and 20th centuries has contributed to severe negative impacts on riverine ecosystems. Increase in water velocity and lack of stream bed heterogeneity as a result of stream channelization lead to increased bed load transport. Since availability and recruitment of new suitable spawning substrate in Scandinavian watercourses is sparse, spawning habitats for salmonids has become a scarce commodity. Lately, increasingly more attention has been given to the recreation and improvement of brown trout (Salmo trutta) spawning habitats in restoration projects. While much of the research on spawning habitat has been focused on evaluation of the influence that the constructed spawning grounds have on fish populations, few studies have been conducted to evaluate the persistence of these constructions over time. I evaluate erosion of constructed spawning beds as an effect of sediment transport attributable to water discharge.

Förr eller senare minskar tillgången på råolja och därmed bensin och diesel i världen. Då måste vi människor finna andra drivmedel för att klara våra transportbehov och andra behov som är beroende av drivmedel. Förutom detta finns det behov av åtgärder som minskar emissioner av CO2 till atmosfären. Etanol som drivmedel är relativt nytt, och marknaden är potentiellt mycket stor. Agroetanol AB är en etanolfabrik i Norrköping som använder spannmål som råmaterial.

Syfte och frågeställningarSyftet med studien är att undersöka om det finns några skillnader i fysisk aktivitet beroende på upplevd stress. Undersökningen avser att jämföra en tidsmässigt lugn respektive stressig vecka. För att besvara syftet undersöks om deltagarna når upp i rekommendationerna för fysisk aktivitet samt om det finns en skillnad i aktivitetsgrad mellan domänerna.  MetodStudien är en tvärsnittsstudie där enkäter används för att besvara syftet. Enkäten är egenkonstruerad och uppdelad i två delar, där delarna representerar en vanlig lugn vecka och en vanlig stressig vecka. Den upplevda stressen är utgångspunkt, den fysiska aktiviteten undersöks genom frågor som berör intensitet, duration och frekvens.

Boberg at Scania CV AB. The purpose was to investigate the technical and customer oriented possibilities for the development of a transport security measure against cargo crime, which is a growing problem in Europe. The main goal was to develop a concept that is possible to implement in the Scania CV AB Fleet Management System. Another goal was to develop a security model that will be used as a tool during Scania CV AB?s future development projects of transport security concepts.The work was divided into three main parts: a background study, handling cargo crime, transport security Scania CV AB trucks and market analysis, a stakeholder investigation including a questionnaire and interviews, and a concept development session.

This thesis is a feasibility study for a future product development project. The purpose ofthis project is to evaluate the possibilities and difficulties associated with the design of anelectric power assist servo for all terrain vehicles (ATVs). The project has been carriedout in collaboration with Nira Control AB. Nira designs and manufactures electric andelectro mechanic products mainly for the motor sport market segment.Nira Control AB is developing a fuel injection system for a new line of large ATVs oncommission. To be able to compete with manufacturers like Yamaha and Honda thecommissioner should be able to offer optional power assist steering.

Beef cattle wintering outdoors should be provided a shelter, e.g. a type of barn or corresponding. This type of production requires appropriate soil types and secured animal welfare. For example, a clean and dry resting place needs to be provided to the animals. To receive an exemption for buildings the farmer has to have something equivalent that provides an adequate shelter.

In Sweden according to the planning and building Act municipalities have planning monopoly. The question about shopping centres in the outskirts of cities is a regional issue, because they attract customers from a large area. Municipalities often find it hard to assert themselves against large commercial companies when it comes to their establishing new retail outlets on the outskirts of cities. Without a regional co-operation there is a risk that municipalities can be played up against one another, so that more and more companies are given permits without the municipalities having taken the strategic consideration necessary for a long term sustainable development. The focus in this work is on four municipalities in the Södertörn region (Södertälje, Botkyrka, Huddinge and Nynäshamn).

In this paper I have sought a suitable level of abstraction in my models describing the landscape; the models are made to be viewed from eyelevel. Because of the spectator being ?in the model? the objects included need a certain degree of realism. I have sought what is needed in the model to be able to comprehend that the model is showing a landscape. Some details might be unnecessary.