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182 Uppsatser om Steering column - Sida 1 av 13

Modellering och reglering av drivenheter i gaffeltruck

To enable the enhancement of the driver's environment in a forklift, an alternative form of steering has been evaluated. An earlier concept with a combined driving and steering wheel has been exchanged to a concept with two driving wheels. A link wheel has replaced the combined driving and steering wheel. The steering is done through differentiation of the velocities of the two driving wheels. The scope of this master thesis is to create a simulation model, create a control program and to evaluate the concept of two driving wheels.

Biokemisk och immunologisk karaktärisering av pepsin-spjälkade mjölkallergener

Milk allergens were digested by allowing them to flow through a chromatography column, where pepsin was conjugated to the stationary phase of the column. The allergen fragments were then characterized both biochemically, by using SDS-PAGE and gel permeation chromatography, and immunologically, by examining their reactivity to IgE and monoclonal antibodies..

Svensk asylpolitik : En studie kring styrning och långa handläggningstider på Migrationsverket

The Swedish Migration Board has during a long time had problems with long processing times for persons that apply for asylum. The government has set targets that investigation should not exceed 6 months although it is done in almost 70% of cases.The study's aim has been to examine if steering can be linked together to long processing times and, if so, explain why. The intention has not been to provide a comprehensive picture of the problem but has defined itself to ensure steering impact. The study has been carried out by studying relevant governing documents, previous research and by interviews with administrators and decision-makers in two of the Migration Board asylum units.The analyses of the study show that a combination of inadequate steering and inadequate resources have contributed to aggravate the implementation, which has lead to long processing times..

"Biblioteken ser vi som en positiv verksamhet" - en studie om styrning av folkbibliotek i fem svenska kommuner

The aim of this study is to explain and analyse political steering of public libraries in Swedish municipalities and the roles of politicians and administrators in this process. To fulfil this purpose five municipalities have been studied. It is argued that both politicians and administration have to be included in a study of steering and that the relation between politicians and administrators should be seen as an interplay. Planning and evaluation are discerned as the two main activities in the steering process. The material in this study consists mainly of information collected through interviews with library responsible politicians and library managers in all five municipalities.The results show that libraries are considered politically uncontroversial and that politicians see little need for political interference and steering.

Vad skola vi göra med litteraturen? : En studie av de nya styrdokumenten samt ett urval av läromedel och deras föreställningar om och legitimeringar av skönlitteratur i det svenska skolsystemet.

In this thesis I set out to study how the reading of fictional literature is viewed, legitimatized and operationalized in two educational domains: the recently revised steering documents that all Swedish teachers must relate to, as well as a selection of teaching materials designed for education in the Swedish language for upper secondary school. The teaching material I have studied has been recently updated in order to correspond with the new steering documents. I relate my analysis to previous research about the use of fiction in education, and I also combine my analysis of the two educational domains to see whether the underlying intentions of the steering documents have influenced the revision of the teaching material. The outcome indicates that the steering documents? previous focus on culture has diminished although a certain insecurity as to how to use the concept and deal with the issue of whose culture should be taught can be identified.

Enantioselektiv HPLC-analys med kirala stationärfaser bestående av makrocykliska glykopeptider och polysackarider

The purpose of this study was to evaluate enantioselective analytical methods by separation of the enantiomers of four drugs (citalopram, zopiclone, tramadol and methylphenidate) and their metabolites. The analyses were performed with HPLC-UV with columns whose stationary phases were based on macrocyclic glycopeptides (Chirobiotic V, V2 and T) and polysaccharides (Lux Cellulose-1, Cellulose-2 and Amylose-2).The Chirobiotic V column showed high selectivity for citalopram and its metabolites. High resolution was obtained using a mobile phase consisting of methanol, acetic acid and ammonia. High selectivity for the enantiomers of zopiclone and its metabolites were obtained on the Cellulose-2 column using a mobile phase consisting of acetonitrile and ammonium acetate buffer.The enantiomers of tramadol were separated with the Amylose-2 column. However, changes in the pressure arose, probably caused by the additive NH4HCO3.

Själv- och kamratbedömning : En undersökning av lärares och elevers uppfattningar kring själv- och kamratbedömning.

In this thesis I set out to study how the reading of fictional literature is viewed, legitimatized and operationalized in two educational domains: the recently revised steering documents that all Swedish teachers must relate to, as well as a selection of teaching materials designed for education in the Swedish language for upper secondary school. The teaching material I have studied has been recently updated in order to correspond with the new steering documents. I relate my analysis to previous research about the use of fiction in education, and I also combine my analysis of the two educational domains to see whether the underlying intentions of the steering documents have influenced the revision of the teaching material. The outcome indicates that the steering documents? previous focus on culture has diminished although a certain insecurity as to how to use the concept and deal with the issue of whose culture should be taught can be identified.

Styrningsrationalitet i svenska kommuner - en fråga om ideologi? : En komparativ studie om sambandet mellan ideologi och styrningsrationalitet

This paper is about if municipal council's ideology affect steering in the municipalities of Vellinge and Fagertsa. Vellinge has for a long time been governed by Sweden's conservative party Moderaterna. Fagersta has for a long time been governed by Sweden's left party Vänsterpartiet. The main question of the paper to be answered is as follows:Is there a relation between the steering in municipalities and the ideology of the governing parties?The hypothesis is that there is a connection between what ideology the party that governs has and how the municipalities are being governed.

Raalie steering systems

Under ht08 och vt09 har vi gjort ett examensarbete där vi i gruppen utvecklat ett mekaniskt styrsystem för sjukhussängar. Det nya styrsystem ska underlätta det dagliga arbetet för personalen på sjukhusen, då det idag är svårt att kontrollera sängen när man är ensam och knuffar. Men med RaaLie fastmonterad på sängen kan man utföra arbetet själv, och det är mycket lättare att ta sig runt skarpa svängar och trånga passage..

Eurocodes : Beräkningsjämförelser mellan eurocodes och BKR

In the year 2010 a transition will take place here in Sweden from the present rules how to dimension buildings in to the common rules with have been developed in Europe, the Eurocodes. Eurocode is the term for a collection standard that contains calculation rules in how to dimension constructions and buildings. They are developed by the European standardize committee.The purpose with this examination work is to get an insight of what changes this will contribute to, and how it will affect the dimensioning. Are there going to be any differences in the dimension you finally chose?To investigate these possible differences two constructions will be calculated first in the present Swedish rules, and then in the coming eurocodes.One of these two constructions will be build completely in steel, while the other will be build completely in concrete.

Utveckling av en LC-MS-metod för analys av gamma-hydroxibutyrat, gamma-butyrolakton, 1,4-butandiol, amfetamin och metadon

In this project a LC-MS-method for the analysis of gamma-hydroxybutyrate, gamma-butyrolactone, 1,4-butanediol, amphetamine and methadone was developed.Initially, the efficiency of the ionisation of the analytes was evaluated with respect to the ionisation technique (ESI, APCI and APPI) and the composition of the mobile phase. In the next step a number of different columns was tested in order to find the one with the greatest potential for separation of the substances in question. Using the selected column, the separation was optimised by means of experimental design and the software The Unscrambler 7.8. The parameters studied were the flow rate, the column temperature and the mobile phase composition. The response variables were the resolution between the target compounds and the retention time of the last eluting compound.These experiments showed that, in order to obtain the best ionisation, the mobile phase should consist of 5 mM formic acid in water and acetonitrile.

Transportsfordon för rullstolsburna

A vehicle that carries a person sitting in a wheelchair has been rebuilt. The original vehicle was provided with a petrol engine, hydrostatic drive and a mechanical steering rod, making it noisy and hard to maneuver. The purpose with this project was to convert the vehicle to make it more environmental and easier to drive.A new design has been proposed where an electrical drive has replaced the noisy combustion engine and an electrical motor with joystick control has replaced the manual steering.The project was divided into two parts. One mechanical part where the construction of the drive and steering were to be decided. The other part involved programming the microprocessor and implementation of all the necessary electrical for the control system of the vehicle.

Utveckling av rattstång med övre teleskopfunktion

I denna rapport redogör projektgruppen för resultatet i kursen examensarbete 15hp (C-nivå) utfört på maskiningenjörsprogrammet, inriktning produktutveckling och design, vid Jönköpings Tekniska Högskola.Examensarbetet har utförts i samarbete med Kongsberg Power Product Systems AB i Ljungsarp. Syftet var att utveckla en ny typ av övre teleskopfunktion till Kongsbergs modulsystem för ställbara rattstänger.Utgångspunkten i projektet var att skapa en mer ergonomisk förarmiljö, något som Kongsbergs kunder och marknaden för långsamtgående fordon allt mer efterfrågar. Kraven som ställts på projektet bestod i största del av axiella och radiella krafter som konstruktionen skulle klara av, samt den axiella förlängningen av rattstången.För att strukturera arbetet har en produktutvecklingsmetod från boken The Mechanical Design Process av David G. Ullman använts. Dessa metoder har använts i genomförandefasen för att leda fram till resultatet.Projektet har resulterat i ett koncept som löser Kongsbergs krav på förbättrad förarergonomi..

Removal efficiency of perfluoroalkyl substances (PFASs) in drinking water : evaluation of granular activated carbon (GAC) and anion exchange (AE) using column tests, and the effect of dissolved organic carbon

Poly- and perfluoroalkyl substances (PFASs) are a group of environmental contaminants that have gained increasing attention due to their potential to bioaccumulate, environmental persistence and potential toxicity. PFASs have been found in surface water, sediment, air, soil, sludge and ice caps globally, as well as in wildlife and humans. Furthermore, PFASs have also been detected in drinking water, leading to raised concerns for human health, since drinking water is one of the most significant sources of PFASs for the general population. Conventional water treatment techniques have shown to be ineffective removing PFASs, highlighting the importance for further research to develop efficient removal techniques. The aim of this study was to investigate the removal efficiency of PFASs in water using two treatment techniques; granular activated carbon (GAC), type Filtrasorb 400®, and anion exchange (AE), type Purolite A-600. Additionally, the effect of dissolved organic carbon (DOC) on removal efficiency was studied.

Styrning och nödbroms av ModuLith

The purpose of this project is to get a fully functional, automatic steering system and a variable breaking system with an emergency breaking function to an off road vehicle. This off road vehicle is supposed to work as an aid in military situations. A team of two, Sebastian Attervall and Nichlas Gustafsson, got an order from Jonas Nyårds and the PreeRunners Project to construct a steering system that could manoeuvre an off road vehicle without any human involvement. To make this possible the vehicle would be guided by onboard sensors, cameras and computers. The team where also assigned to construct an automatic breaking system, there also no human would be involved.

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