The animal welfare act in Sweden states that dairy cows need to have at least a dim light present at night, but there are no recommendations for what intensity the light should have. It is unknown how cows perceive and react to low light intensities and earlier studies on this topic are limited. Red light as night light has also been suggested, based on the cows? inability to perceive red light. This have however been questioned. The aim with this study was to investigate how four different light intensities affect dairy cows behavior.

Milk fat is an important feature in many different milk products and other foodstuffs and it is often crucial for the dairy plants that the milk fat is stable for different manufacturing processes. Lipolysis is the enzymatic degradation of fat and is the one of the causes for an elevated amount of free fatty acids (FFA) in milk. Further, the change in fatty acid (FA) composition in milk can affect the stability of the product and also the manufacturing process. Both internal and external factors, at farm level or at the dairy plants can affect both FA composition and content of FFA. Milking frequency (MF=number of milkings per cow and day) and the composition of feed are two examples of factors generally performed at farm level. The objective of the present study was to evaluate how FA composition of milk and amount of FFA are influenced by two different ingredients supplemented to concentrate.

Different field tests are currently used in a wide extent in different levels of soccer teams. To be able to assess the players? physiological status the tests must have high validity, reliability and external validity. Many different tests have been developt, but currently only five of these tests are most commonly used: Yo-Yo intermittent recovery test (YIRT), Yo-Yo intermittent endurance test (YIET), Multi-sprint-test, Beep-test and Cooper-test. Presently there is no definitive conclusion regarding which of these tests is most suitable for soccer players.

Fog is a small-scale weather phenomenon that are fascinating to people. However, the presence of fog in road traffic reduces the visibility and increases the risk of road accidents. By the Swedish Road Weather Information System (VViS), the safety on roads could ameliorate and road accidents caused by fog and other weather hazards could be prevented. Fog is however a complex and usually local phenomenon, why fog formation generally is not easy to predict. For that reason, a statistical mapping of fog, especially along a motorway with high traffic volumes, could be useful in planning to prevent road accidents.

The Clinical Pathology Laboratory at SLU in Uppsala has analysed several blood samples from Dachshunds with severe anemia. As there are no previous studies on this topic, a study was performed to evaluate if Dachshunds are more prone to severe anemia compared with other breeds. In addition, a retrospective case study on Dachshunds with severe anemia was done to search for common risk factors or diseases. Hemoglobin values in samples from 1272 Dachshunds and 2269 German Shepherds analyzed from September 1994 to October 2007 were used to compare the frequency of severe anemia in Dachshund and German shepherd. The samples were identified by laboratory information system.

The aim of this study was to provide SCA Forest Norrbotten District with material to assist in their work towards decreasing the frequency of bucking splits in their saw timber logs. SCA Forest supplies the Munksund sawmill with pine timber. Periodically the sawmill experiences problems related to bucking splits in their logs. The purpose of this study was to find an available method to measure the occurrence of splits directly on incoming timber. The ambition was also to gain some knowledge about possible variations between different logging crews in terms of split frequency. If possible, this information could be used to investigate if certain crews produced more splits than others, and thereby making it possible to provide feedback to the logging machine operators. The study consisted of two major parts, a literature review, and a practical sawmill study.

To design new and high tech products the engineers rely more and more on computer based simulations to investigate the properties and behavior for a component or system.To verify these computer based simulations the dynamic properties for the components of the drivetrain needs to be verified. Therefore measurements of the stiffness and vibrations for the rear axle has been performed. This report show how the measurements has been implemented and evaluated, along with some interesting results for the rear axles properties.The static stiffness for the drive shaft along with the axle-gear has been determined. It is found that the stiffness for the whole rear axle is near the stiffness for the drive shaft, which means that the drive shaft becomes the dominant component of the system and affects the rear axle stiffness the most. The measured stiffness of the driveshaft is close to its theoretical stiffness.The stiffness for solely the hypoid-gear have been calculated using the stiffness for the rear axle and driveshaft, and thus has a range for the stiffness of the hypoid gear been determined.The backlash for the whole rear axle and for some individual components has been determined, where the backlash between pinion and crown-wheel has negligible impact on the total backlash.Measurements of the crown-wheel and pinion movements have been conducted, where the direction of movement is consistent with the theoretical direction of the forces.The vibration measurements show that the vibrations are more severe at certain rotational speeds.

I det här examensarbetet har jag undersökt hur högstadieelever anser att sångundervisning påverkar deras språkinlärning i engelska. Syftet var att ta del av elevernas egna uppfattningar och hur de upplever språkinlärning i samband med sång. Jag har intervjuat fem flickor i årskurs 7 till 9 från två olika kommuner som deltar i musikskolans undervisning på sin fritid. Intervjuerna har skett via telefon och samtliga intervjuer har spelats in. Informanterna berättade att de har goda engelska språkkunskaper och att de upplever att de förbättrar dessa med hjälp av sin sångträning.

Av analysen kan Michelle sammanfatta att om hon skulle starta en kvartett i framtiden för till exempel lansering skulle hon ha en kvartett redan färdig och redo för repetition innan start av liknande projekt. Momentet att hitta potentiella medlemmar till stråkkvartetten på så kort tid är orimligt och även om hon hittade medlemmar till kvartetten så skulle det inte hålla i längden. Efter att Michelle fått erfarenhet av personer som inte hållit de muntliga avtal som faktiskt gjordes kommer hon lägga mer tid på att finna rätt personer. Dessutom hade alla de punkter angående mål, promotion och avtal diskuteras med kvartetten detaljerat för att allihop ska få en likvärdig respekt och förståelse i det samarbete som komma skall. Inget bör vara otydligt.

To identify the exchange and adaptation that takes place in the business relationship between electricity suppliers and electricity customers and analyze how these factors affect the strength of the relationship.The investigated concepts create synergies. The strength of the business relationship in the current situation is dominated by weak reciprocity in adaptation and an inefficient exchange of information with low frequency..

Genom detta examensarbete har vi valt att ta reda på lärares syn på och syfte med hemläxan i matematik. Ges hemläxan, vill vi ta reda på hur hemläxan är kopplad till undervisningen genom utformning och uppföljning. För att få svar på våra frågeställningar har vi använt oss av kvalitativa intervjuer med elva lärare som undervisar i matematik i grundskolans tidigare år. Vårt resultat visar att nio av lärarna väljer att ge hemläxa och syftena var hemmet, där föräldrar skulle vara medvetna om sina barns skolarbete, repetition, där eleverna fick möjlighet att repetera det som arbetats med under lektionerna, och ansvar, där elevernas ansvarstagande sätts i fokus. Hemläxan avspeglar undervisningen och den bygger på moment som eleverna är bekanta med och lektionstid avsätts till uppföljning av hemläxan.

Vårt syfte med undersökningen var att få fram barns och föräldrars upplevelser och tankar kring fenomenet läxor. Vi ville ta reda på hur läxor påverkar familjen och barnens fritid och om detta skapar problem eller leder till inlärning. Vi använde oss av den forskningslitteratur som fanns för analys av resultatet. Genom en kvalitativ forskningsmetod där vi använde oss av enkäter med öppna frågor och intervjuer fick vi fram många olika åsikter och tankar kring läxor. Resultat visar på stora skillnader i arbetsbelastning och påverkan på barnen.

The LSH-study started in 2003 at the department of Health and Society at the University of Linköping. The purpose of the study was to examine the relationship between life condition, stress and health. A total of 1007 people from ten different health centres in Östergötlands län participated. At the follow up, a couple of years later, 795 of the 1007 participated. 127 of the 212 in the attrition turned down the follow up, twelve people were not invited (for example in case of death) and the rest did not respond at all.

This essay is an analysis of the objects made of bronze found in an excavation Västergarn parish, Gotland, in 2010, conducted by the University of Gotland. The studied material presented in this essay comes from contexts inside, as well as nearby the foundation of a medieval building which purpose is still not certain. The first purpose of this study is to present the bronze-objects found inside and nearby the foundation of house 6, and to see if there are any datable objects. There is also a discussion whether there has been any bronze-crafting in the area. The second purpose is to make a contextual analysis to see if there are any differences between the material found outside and inside of the building, and what conclusions can be made regarding the function and use of the building.

SAAB Aerotech division FGR in Arboga builds and develops equipment and components used in both military and civilian applications. To build a test system for a specific project that SAAB is responsible for requires a simple signal generator that can provide a pulse modulated signal. The need to buy a new advanced signal generator for example from Agilent is not as profitable as the instrument is expensive and contains features that SAAB does not require in their applications and test systems. That was the reason why SAAB offers two students a thesis where the goal is to construct a signal generator in accordance with what SAAB requests.This thesis contains several different phases. The first step was a meeting with our supervisor Mats Bergman and by reading the data sheets for components to be used in the project, with these information and specifications that we have received from SAAB we started to construct the signal generator.What we did during the construction work was to simulate and draw a schematic to be able to design the circuit board.