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320 Uppsatser om Static plate loading - Sida 16 av 22
Mjölkkyl till espressomaskin : Impressive cooler
The project was made in cooperation with Coffee Queen AB, Arvika. The task was to develop and design a new cooler for the milk to Jura Impressa X9, an espresso machine. The good assistance with staff at Coffee Queen and engineers in China and at KPA in Karlstad led to a solution to the problem. It was a long road to get there, many different concepts was developed. When the day came to decide which concept to work with, the choice stood between two different technical solutions.
Ekonomisk värdering av användandet av underbett på timmerbilar
Holmen Skog has in some places in their operation area access to timber trucks with centre mounted scrapers. They make transportation more flexible and reduce reliance on contractors for road maintenance. The trucks with centre mounted scrapers have a higher tare weight, making them less productive and therefore they receive compensation with a 0.75 % increase on transportation price.
The purpose of this study was to investigate what actions a timber truck with centre mounted scraper can perform with acceptable quality in winter, and to examine if it is an economically profitable solution for the truck operator and charterer.
The study was done in three stages; interviews, performance analysis of the transportations carried out and an economic analysis with the help of Sven Erik Gilles spreadsheet tool. The study included the districts Delsbo and Hudiksvall.
Performance of laying hens in a cognitive bias task : effect of time since change of environment
In the debate on laying hen welfare, and specifically housing conditions, the main focushas been on physiological and behavioural measures. What is lacking is knowledge of howthe hen experiences the situation ? her state of mind.This study is an attempt to gain insight into the private mental states of former batteryhens. It uses a cognitive bias method based on spatial judgement, i.e. judgement of aambiguous stimulus placed spatially in between a reinforced and an unreinforced stimulus.This method has previously shown differences in judgement by animals in enriched versuspoor housing.
Förloppslandskap : ett sätt att betrakta landskap
Begreppet landskap kan betyda både utsiktslandskap, så som det används på engelska , och område, region, som är grundbetydelsen i de germanska språken. Torsten Hägerstrand introducerade i början på 1990-talet begreppet förloppslandskap, som vänder sig mot ett statiskt betraktande av landskap och istället tar fasta på landskapets processer. Målet med denna litteraturstudie är att presentera en översikt av förloppslandskapets idéer. Syftet är att med detta som bakgrund föra en diskussion kring förloppslandskapets relevans i dagens planeringssituation. Europeiska landskapskonventionen företräder en landskapssyn där samspelet mellan natur och samhälle betonas, men till skillnad från förloppslandskapet så är fokus inställt på människans upplevelse.
Ersättningsmodeller för ballasttransporter : vid anläggning och underhåll av skogsbilvägar
Construction and maintenance of forest truck roads are a necessary element of industrial forestry. Payment for contracting services in this context can be done according to a number of payment models. This study will focus on the methods and consequences associated with a change of Holmen Skog?s payment model from per hour to per metric ton for ballast hauling.
The aim of this study is to improve the economic efficiency of Holmen Skog?s ballast hauling in construction and maintenance of forest truck roads. This is done by formulating and evaluating a proposal for a payment model based on crowns per ton.
Statistisk behandlig av driftsdata : Ur Garpenberggruvans driftcentral
Boliden Mineral Ab's mine in Garpenberg, Dalarna is going through a massiveexpansion. The annual ore production is being increased from 1,4 million tons to 2,5million tons in less than two years period of time. Along this expansion thedepartment of mining techniques is administrating a project of optimizing the shortterm planning for the mining production. Garpenberg have since mid 90s storedinformation from all mining processes in a database.The information consists of time data from all the different activities required in themining process, for example charging, blasting, loading etc. The database also containstime data of delays that are affecting the production.
Vilken av stretchingmetoderna statisk stretching, dynamisk stretching och proprioceptiv neuromuskulär facilitering är mest effektiv för att öka rörligheten i hamstrings?- en litteraturstudie
SammanfattningBakgrund: Stretching har använts i många år inom sport och rehabilitering med målet att minska risken för muskelskador, bland annat skador i kombination med kort hamstrings. Flera olika stretchingmetoder används för att uppnå ökad rörlighet. Tre av dessa är; 1) Statisk stretching, 2) Dynamisk stretching, 3) Proprioceptiv neuromuskulär facilitering (PNF).Syfte: Syftet med den här litteraturstudien var att jämföra och undersöka tre olika stretchingmetoder (statisk, dynamisk och PNF stretching) för att se vilken som är mest effektiv för att öka rörligheten i hamstringsmuskulaturen.Metod: Sökning av artiklar gjordes i databaserna Pubmed, Sport Discus, samt Science Direct. Sökorden som användes var static stretching, dynamic stretching, pnf, flexibility samt range of motion. Totalt inkluderades till slut 26 artiklar i den här litteraturöversikten som dels överensstämde med inklusionskriterierna och som dessutom var tillgängliga gratis och i fulltext.Resultat: De flesta studierna var gjorda på unga vuxna mellan 16 och 35 år.
Implementering av verksamhetsbaserad arkivredovisning i statliga museimyndigheter
The change that has occurred during the past few decades concerning the development of electronic records, information technology and the constantly increasing quantity of information, have confronted the archival discipline with new challenges. In the digital world, the concept of ?record? has changed from representing something lasting and physical to something much more abstract and transient. The way to approach archival description has also changed, from focusing on the static preservation of archival records, to documenting the transactions of organisations, and to clarify operational processes. The discussion about the general purpose of the archival discipline, and its place in a changing world, has led to a new approach to archival description.
Utveckling av provmetodik för HVAC på lastbil : Klimatprovning i klimatvindtunneln CD7
The issue about how Scania shall perform HVAC tests in the climatic wind tunnel CD7, which Scania is about to complete by year 2013, has resulted in four test methods for truck HVAC and also a test method structure. The test methods have been chosen to focus on sun, snow and rain simulations. These are adapted and developed according to what should be tested and to what can be tested in CD7, which has been the object. With CD7 different climates can be simulated in a controlled environment for complete truck level, from desert with high sun load to arctic cold and snow.The test methods represents a basis to start from, for designers and test engineers which make the testing more repetitive as well as time eventually can be saved. Before the test methods can be applied they must be verified as they are based on theoretical and empirical assumptions.
Förändrad attityd - nya vanor! : En kvalitativ kohortstudie om motionsvanor och medvetenhet hos barn som medverkat i en intervention mot övervikt och fetma
AimThe aim of this study is to examine the long term effects of e12 and how they have influenced the lifestyle and perceived awareness about nutrition and exercise in relation to factors from Social Cognitive Theory (SCT) that e12 took in consideration. The questions asked were; How has e12 affected the attitudes, skills, self-efficacy and knowledge relative to exercise? How has e12 influenced the individual?s habits of exercise? How has e12 affected the perceived awareness regarding the impact of nutrition and exercise on the body weight?MethodThe study is pursued by a qualitative method using semi structured interviews on six individuals between the ages of 16-18 years old that completed the project 4-5 years ago. A questionnaire regarding nutrition and exercise habits was also used as part of the study. All individuals from the year of interest were first contacted by the senior physician connected to the project.
Claw and leg lesions in preweaning piglets : a comparative study of piglets reared on structured polyurethane coating and piglets reared on concrete floors
Floor surface in pig facilities can have an impact on animal welfare and pig health, as it can cause the pig physical damage and thereby increased risk of infectious diseases and lameness. The development of pig housing systems has resulted in a decreased use of bedding. It seems hard to find the optimal floor in farrowing pens, as it must suit both the sow and piglets. The floor friction needs to be adequate to avoid slips and at the same time should the floor be non-abrasive. Abrasions and lesions caused by the floor are not only causing the animal suffering, but are also negative from an economical aspect.
Klassifikationens roll på www: en studie av webbmiljöns påverkan på klassifikationens principer och funktioner
Principles that guide how a classification system should be structured have existed for more than a century. Traditional classification principles can be of great value for the design of classification schemes directories on the web. However, there are differences between the library context in which these principles originated, and the web. This thesis aims at investigating how changes in the context of classification affect the application of traditional principles of classification on the web. Another purpose is to see what implications this has for the design of classification schemes on the web.
Dynamiska egenskaper hos håldäcksbjälklag belastade med gångtrafik
Concrete floors have traditionally had no problems with annoying vibrations. However with the demand for larger spans the floors need to be made more slender with a higher degree of utilization and lower mass. Therefore new floors may have problems with vibration serviceability. This thesis studies the vibration characteristics of hollow core slabs. The analysis was made in the finite element program Ansys. The hollow core slab was subjected to a varying force simulating one person walking across the slab.
Säkring av samtliga kritiska skruvförband i mellanstora asynkronmotorer
The purpose with this thesis is to get a compilation of all the critical bolted joints of all enginesproduced at LV Motors. ABB LV Motors produces induction engines with seven shaft heights. Eachengine size exists several variants of components ex. standard shield and flange shield. Depending onwhich components the engine is equipped with arises various types of strains in the engine's parts,certain assembly ways are more favourable than other.The most critical parts in the engine from a mechanical point of view are the screw units betweenshield/stator, feet/stator and bearing cover/shield.
Konstruktion av serviceutrustning till tunnelborrningsmaskin
The Master Thesis work this report is based upon has been conducted in cooperation with Svea Teknik AB. Svea Teknik is a consultant firm which is developing parts of a tunnel boring machine on behalf of Atlas Copco. The machine is being developed to mechanically excavate hard rock by fixating itself in the tunnel and then press a large rotating cutter-wheel equipped with disc-cutters against the tunnel wall. The disc-cutters are the tools that are in direct contact with the hard rock and are therefore exposed to extensive wear and needs to be replaced on a regular basis.The purpose of this Master Thesis has been to develop a service equipment that will enable time effective and safe changes of disc-cutters. The disc-cutters have a diameter of 17 inches and weigh about 130 kg.