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1029 Uppsatser om Deep pressure - Sida 8 av 69
Spillningsinventering för bestämning av älgbetesbelastning på ungskog
In the 1980?s the moose population in Sweden grew explosively due to big changes in the silviculture with clear cuttings instead of single-tree selection. Clear cuttings brought big areas of young forest and therefore a lot of fodder in one place. Since this change, the discussion about how to manage the moose population has grown into a very big problem. Forest owners think that the population needs to be strongly reduced because of all the damage that is done to the young forest when the moose seeks its food, and the economic losses because of that.
Brunbjörnens (Ursus arctos) inverkan på den nya svenska älgförvaltningen
The European Brown bear (Ursus arctos) has gone from basically being extinct in Sweden to, 2008 being estimated to a total of 3298 individuals. When looking at the new Swedish moose management system it is important to have an ecosystem-based approach and therefore include all the parts that moose impacts on and from in the management, especially the brown bear. Primarily in the spring and early summer the brown bear is a significant predator on moose calfs which must be taken into account in moose management. When the bear recolonize areas that it has previously been eradicated from, it will once again come in contact with people who are not accustomed to the bear's role in the ecosystem. We studied three groups of moose management areas with different predation by bears.
Testbänk för luftlager
Test bench for air bearingsThis thesis work consisted of bringing forward and defining the test parameters relevant for a test bench and constructing a test bench that can test and verify the largest existing air bearings that are of use in Micronic Laser Systems AB machines. Because the knowledge about air bearings is limited it is thought that with the help of the test bench the knowledge would increase and in that way improve the air bearings.After learning more about air bearings and their purpose at Micronic Laser Systems AB, I started the concept phase for the test bench. For each part in the test bench I consulted my two tutors, Torbjörn Hedevärn and Johan Bergqvist, at Micronic Laser Systems AB. The final concepts where documented as 3D-modells in Solidworks and some of them have been tested in Solidworks FEM-program.The test bench is designed so that, with the help of a pneumatic cylinder, 25 kilo weights are placed on the air bearing to test its stiffness, damping and the pressure performance under its surface area. To test these parameters the test bench has to have a pressure meter, accelerometer and a microcator.
Utveckling av processparametrar inom en hårdmetallindustri
This report analyzes and examines a hypothesis for finding a method to optimize thelength of the delubrication process time based on a total charge weight. The work hasfocused on the holding time for delubrication and the total charge weight.An important step in the manufacturing chain of cutting tools is when the greenbodies undergo the sintering process. Today, the delubrication step has the sameprocess time independent of the total charge weight. An implementation of a methodto adjust the delubrication process time would give more consistent quality of thecutting tool´s internal characteristics but also reduce the time course of the sinteringprocess. In the present project two methods for this goal were tested, thedevelopment of an algorithm and a weight interval subdivision with associateddelubrication process times.During delubrication a pressure increase is observed due to the decomposition of thePEG in the powder mixture.
Engångshjältar - Hur myter och symboler konstruerar nationalism på Balkan
This thesis is about how nationalism is constructed from two competing groups, Kosovo Albanian and Serbs. Kosovo for Serbs is a deep symbolic value that continues to be a Serbian identification. This is one of the main reasons why no Serbian politician has the courage to give it up. On the other side of the coin we have the Kosovo Albanians that only settles for independence. To recognize the independence for Kosovo could jeopardize the security for the Serbian minority living in Kosovo.
Organisationsklimatets betydelse för anställdas välbefinnande
The main aim of the study was to examine the importance of organizational climate for affective job-related wellbeing. A further aim was to investigate potential differences in employee level in the experience of organizational climate and wellbeing. Another purpose was to see if there was agreement in the view of the organizational climate among the employees. Questionnaires were collected from 44 employees at a chain store. Results showed that Integration, Involvement, Supervisory Support, Training, Welfare, Innovation and Flexibility, Goal Clarity, Efficiency, Effort, Performance Feedback, Pressure to Produce and Quality had a great influence on Enthusiasm but only Pressure to Produce and Welfare correlated with Anxiety.
A Business Perspective on Reducing the Climate Impact from Tetra Paks Transportations of Goods
Title: A Business Perspective on Reducing the Climate Impact from Tetra Paks Transportations of Goods. Authors: Pär BerglundSebastian Lyngström Supervisors: Lars J Nilsson, Environmental and Energy Systems, Lund UniversityNils Månsson, Department of Business Administration, Lund University Problem Analysis: Increased awareness concerning climate change will put pressure on companies to reduce their climate impact. Problems arise when trying to reduce the impact from transportations due to companies? limited control on forwarding agents and difficulties measuring the emissions. Purpose: From a business perspective, this report will enable a reduction of the climate impact that arises from Tetra Paks transportation of goods.
Clover (Trifolium spp) gamefields : forage production, utilization by ungulates and browsing on adjacent forest
Wildlife is a valuable and renewable resource that promotes economical, ecological and social values. These values are important for developing and maintaining many rural societies. However, growing ungulate populations have led to increased browsing pressure on valuable forest trees and crops. Previous studies have proposed supplementary feeding and gamefields as potential methods for controlling the ungulate foraging and reducing browsing damage by providing other attractive food resources. However, quantitative estimates of potential biomass production of various gamefield crops and browsing pressure on the surrounding forest have been lacking.
Trä som fasadmaterial ? behandling och beständighet
Since prehistoric time man has used wood to build their environment. The material?s availabilitycombined with its good mechanical properties has often made it the material of choice. Like allmaterials exposed to natures degradative processes the properties of wood decreases over time.Rot, UV radiation and attacks by insects and pests damage wood if not protected. Since we wantwhat we build to consist, optimizing our building materials durability is of great interest.Techniques and methods for increasing the endurance of wood have been developed in severaldifferent places and for a long time.
Design och optimering av lagertätning : Hos hydrodynamiska oljeglidlager med labyrinttätning
ABB Motors and Generators manufacture large AC machines with oil lubricated plainbearings. The machines have occasional problems with oil leakage from the bearings. aproblem that ABB wants to be solved.In this thesis the cause of this leakage were investigated, with focus on the bearingseals.The purpose of this work was also to suggest amndments for preventing thisproblem. , and to suggest improvements that can prevent this. The first step was todo a literature survey of earlier work on this problem, study the theory ofhydrodynamic bearings and different types of seals and their properties.
Kirunametoden-Jämförelse emot en konventionell injusteringsmetod
AbstractWith increasing population and increasing demands for comfort and thus an increase in energy demand, it is necessary to examine various energy-efficiency measures. This work deals with the ability to control the flow through the heating system to achieve the desired comfort with as little energy as possibleA heating system contains of different parts, roughly speaking, you can divide it to three main components: Heat source, Distribution and Heat emitters. All components are working together to bring heat to the building. What is examined in this report are different ways of adjusting the flow and supply temperature and how it affects comfort and energy use in a building.At today ?s date the conventional method is to use a high flow through the heating system, which affects pressure drop and cooling of the fluid.
Inhysningssystem för växande ungtjurar
The purpose of this study was, if possible, to find a housing system for growing bulls that was as optimal as possible for the animal welfare. In order to select housing systems you must take into account the size of the group, body weight and the type of floor. Seven of the international most common housing systems were compared, straw bedding, deep straw bedding, sliding straw bedding, concrete slatted floor, rubber coated slatted floor, cubicles and feeding cubicles. Studies that have examined the proportion of tail, claw and leg injuries and the presence of unnatural behavior in the different systems. In summary, all studies showed that soft underlay were beneficial for the animals in terms of the proportion of bone lesions and swellings.
Den djupa muskelfunktionen hos kvinnliga elitvolleybollspelare : En studie om transversus abdominis funktion påverkas av stabilitetsträning.
Background and purpose: Volleyball requires a lot of the human body, andeffective core stability is necessary for the athlete. Our muscles cooperate as achain of motions and core stabilization is the base for the moving muscles.The most well-known stabilization muscle is m.transversus abdominis (TrA).The purpose of the present study was to evaluate the function of TrA inSwedish female elite volleyball players and to observe the influence of eightweeks of stabilization exercise on the TrA. Method: 10 female elitevolleyball players (mean age 24,7 years, range 18-31 years) participated inthe study. TrA was measured in supine position with a pressure biofeedbackunit. Subjects were instructed to draw in the abdominal wall without movingthe pelvis and hold for 10 seconds.
Uttorkning av lera : Orsaker och följder
When building a house or similar the stress on the ground increases and deformations can arise. The deformations create a foundation that the building is not constructed for and damages on the building arise. The increased stress on the ground can be derived back to the building, but it is possible that the increased stress may well derive from different sources such as other buildings or trees. The building is an older property, built in the late 19th century alternatively early 20th century, and is today used for rental housing and has suffered severe damages due to subsidence. The goal of the thesis is to find possible causes for these subsidences. The thesis was executed as a combination between literature- and casestudie. After careful studies it has been found that a probable cause for these subsidences is trees. Through field- and lab studies it has been found that the trees has effected the ground through there accumulation of water.
Undertrycksbehandling av sår ? påverkan på patientens livskvalitet och hälsa : En litteraturstudie
Introduktion: Olika typer av sår skapar stort lidande för den drabbade och Negative Pressure Wound Therapy (NPWT) är en behandlingsmetod som utvecklats för att effektivisera sårläkningsprocessen. Livskvaliteten och hälsan påverkas av såret och dess utveckling, vilket gör omvårdnaden vid sårbehandling grundläggande för patientens välmående. Syfte: Syftet var att belysa hur Negative Pressure Wound Therapy påverkar patientens livskvalitet och hälsa. Metod: Polit och Beck (2012) niostegsmodell användes för litteraturstudien. Artikelsökningarna gjordes i två olika databaser samt manuella sökningar och resultatet grundades på tolv artiklar som genomgick en kvalitetsgranskning.