Detta examensarbete har gjorts på uppdrag av Rottne Industri AB och berör matarhjulens dubbinträngning i virket. Matarhjulen sitter monterade i skördaraggregatet i skördaren, en skogsmaskin som används vid skogsavverkning. Då inträngningen, som uppstår av dubbarna på matarhjulen, är för stor (>5mm) bildas skador på virket vilket är ett utbrett problem inom skogsmaskinindustrin. Studien kartlägger de vanligaste dubbmönstrens skadeåverkan under kontrollerade och vetenskapliga förhållanden där testerna är designade för att efterlikna verklig skogsavverkning.I studien utförs två tester. Det första visar sambandet mellan presskraft och inskjutningsmått för respektive dubbmönster.

One way of signalling commands to the horse during riding is through applying tension on the reins to create bit pressure in the horse?s mouth (Terada et al., 2006; Clayton et al., 2011). The skilfulness of the rider in using the hands when applying bit pressure has consequences both for the horse?s performance and welfare (Manfredi et al., 2010). At the trot there are large vertical deviations of the horse?s body which the rider must adjust and adapt to (Terada et al., 2006) and an unsteady hand due to inability to follow the horse?s movement can be a source of discomfort and conflict behaviour in the horse (Heleski et al., 2009).

Background: The oral health is a problem for many people with psychical disabilities. The reason for that is among other things that the psychical disabilities could do it hard to handle fundamental routines in the everyday life. Aim: The aim of the literature review was to describe how the nursing staff experienced their situation about their work with oral health in persons with psychical disabilities. Method: The study has been done as an overview and the data has been analysed with content analysis. Result: Two head categories were identified; barrier that influence the ability to perform the work with oral health and barrier that influence the performance of the work with oral health.

Many grocery stores have products marked whit there private brands. The information about these brands is poor. We wanted to find out what the stores own brands stand for and what the manager of purchase thinks it stands for. We choose to concentrate on meat and cured meat and limit our study to ICA, Axfood and Coop because they are the three main actors in the Swedish branch of grocery. The supplier has traditionally manufactured products and made there own brands. These products have been distributed and sold to the consumer thru stores.

Ett par av de trick som används i virtual reality för att få 3D-världen att verka mer levande är stereoskopi och ett dynamiskt perspektiv med head tracking. Tidigare undersökningar har visat att head tracking har större effekt på 3D-upplevelsen än stereo [1], i alla fall när bilderna visas på en vanlig datorskärm. Den här undersökningen har försökt att ta reda på om samma sak gäller då den virtuella världen projiceras på en horisontell bordsskiva. Intressant nog går resultaten från det genomförda experimentet tvärt emot all teori. Tyvärr kan inga konkreta slutsatser dras eftersom alltför många felkällor har uppmärksammats, men studien öppnar ändå upp för framtida forskning..

Forest ebeaver is, equipped as a bio-energy harvester, approximately four and a half meter long and weigh just over two tons. The main purpose of this report is to find out whether a small machine like Forest ebeaver can be profitable used in early thinning. To find this out a study has been made using the machine to thin in a young pine stand..

This study is one of five that has been done based on Lunds Energi?s planned investment in bioenergy. The plan is to build two large burners, at Örtofta, that?s going to be supplied with biofuels. In this study I take a closer look on the profitability when you choose to sell your cereal as bioenergy. I?ve been calculating with selling the straw from the grain crops and winter rape, selling the rye weat as whole crop and fertilize the hemp with sewage sludge.

Fortifikationsverket which is the landlord for the Swedish national defence has a great problem in their forestry due to the relatively large amount of metal objects in their timber. These metal objects cause different types of economical losses in the timber refinement chain. To enable out sorting of logs containing metal objects already in the harvesting phase, Fortifikationsverket is interested of the possibility to utilize some type of metal detector in a harvesting head for that purpose.The goal of this study was to, with help of a case study, enlighten the problem that metal objects in timber cause for Fortifikationsverket and their customers of timber and to investigate conditions of to mount and utilize some kind of metal detector in a harvesting head at present.The saw timber deliveries by Fortifikationsverket during the time period 2003-2005 was used as a reference volume for calculations of economical losses. In this case study was included two sawmills where timber from Fortifikationsverket were delivered to for further refinement. Factors investigated were the type of damage metal objects caused in these two sawmills and the economical signification of these damages.

This essay studies the practice of both the political and the administrative leadership at the municipal level from the point of view of the politicians and the chief officers leadership role, and the relationship between politicians and administrators. I discuss and analyse how politicians and senior officials practice leadership, differences or similarities and if their practice of leadership raises any challenges in a democratic framework at the municipal level. I conducted interviews with the municipal political leader and the head of administration at the municipal level in Karlshamn and Sölvesborg. In the analysis I discuss communication as a leadership process which highlights ?enabling elements? and potentials of the leadership process.

Introduction: Each year 1200-1300 patients are diagnosed with head neck cancer. Treatment that involves radiotherapy can cause severe side effects for example trismus that affects quality of life.Purpose: To study health-related quality of life in patients who have undergone radiation treatment for head and neck cancer and participated in a intervention group who received training intended to prevent trismus or in a control group who received standard treatment.Method: This is a prospective study in which data is collected from 66 patients participating in a randomized study aiming to evaluate a training program to prevent trismus. Thirty three participated in the intervention group and thirty three in the control group. Both patient groups assessed health related quality of life (HRQOL) with EORTC QLQ C30 and QLQ-H&N35, at start and end of the radiation treatment, and at 3 and 6-months after completing radiation treatment.Results: There is no difference between the intervention and control groups regarding symptoms, functional status and global health, except for intake of nutritional supplements.  For both groups almost all scales measuring HRQOL deteriorated under the radiation treatment. However, 3 and 6 months after end of radiotherapy HRQOL had improved and had returned to the baseline values.

The aim of this review is to evaluate the best way to transport the horse. When it comes to transporting horses there are a number of different types of trailers and trucks that you can choose from today. The most common type of trailer is designed for two horses and the horses are transported facing the direction of travel. Studies has been performed to determine if that is the most advantageous direction for the horse to travel in, in terms of balance and levels of stress. Stress is a widely discussed subject and the definition is not fully developed.

Cattle have a species specific movement pattern when lying down and getting up. They need sufficient space for their heads to perform these movements normally. The aim of this study was to investigate the lying down and getting up behaviour of beef bulls at a Swedish farm operation. The hypothesis was that bulls older than 10 months (over approximately 400 kg) were disturbed by a horizontal front rail and that the time to lie down and get up differed from what can be regarded as normal based on earlier scientific studies. The bulls were Swedish Red and White (SRB), Swedish Friesian (SLB) or crossbreeds of these two, and were kept in a cubicle system with a stall front design where there was a horizontal rail 40 cm above the stall floor.

The purpose of this study is to examine the difference between three query strategies with respect to retrieval effectiveness. The thesis aims at examining how two types of noun phrases containing a modifier to the head word, which is a noun affect the retrieval performance with regard to recall and precision. The noun phrases in the thesis are of two types: 1) noun phrases containing a modifier to the head word (which is a noun) and which are not dictionary phrases (NF) and 2) dictionary phrases. Both types of noun phrases in this thesis contain at least two words. The queries were executed in Query Performance Analyser, QPA, containing the InQuery system and a sub collection of TREC-Uta documents with its topics.

Information regarding cows grazing behaviour and time spent grazing can be of great interest to dairy farmers, since this information can indicate how well suited the pasture is to the cows. Feed intake at pasture is however challenging to measure. Automated systems for monitoring the behaviour of cows within dairy production have become increasingly important and relatively common. The aim of this study was to validate an activity measuring device (HOBO® G Logger Pendant Data Logger, USA), a triaxial accelerometer that registers the cow?s head positions during grazing, in order to see if cows? grazing behaviour on pasture could be distinguished from their non grazing behaviour.

Fish-head pendants are one of the characteristic Gotlandic Late Iron Age artefacts. This object has been rather neglected and mainly considered as an insignificant embellishment, normally worn as a neck-collar and seen as an artefact include in the typical Gotlandic set of female jewellery.The fact that the fish-head pendant has a very long life span, which stretches from grave-finds in the Early Vendel Age to hoards in Viking Age as well as secondary usage as brooches in the Early Middle Ages, makes the artefact an excellent starting point for discussions on social practices and change through material culture. It's shown in this study that, contrary to previous beliefs, the normal usages for fish-head pendants is as solitary pendants and not as neck-collars. Neck-collars is shown to have an intricate relation to inhumations for young individuals, whereas solitary pendants are found in cremation deposits for adult individuals, something that relates to a fixed social practice mainly in the period 700-900 AD and that develops from the cremation funeral practice. This particular social practice relates to aspects of attraction and protection and continues in to the 10th century outside of funeral structures, which is shown by the composition of hoard-finds from the 10th century, but is totally absent when the pendants is given a secondary usage as brooches in the end of the 11th and beginning of the 12th century.