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813 Uppsatser om Diameter measurement - Sida 24 av 55
Datortomografi med kontrast eller ultraljud med kontrast för att upptäcka endoläckage efter endovaskulär aneurysmrekonstruktion (EVAR)
Idag används datortomografi med kontrastmedel (CTA) som primär undersökningsmetod vid efterkontroller av EVAR-behandlade patienter. Dessa patienter följs upp årligen under resten av deras liv. Ultraljud med kontrastmedel (CEUS) har de senaste åren undersökts som ett alternativ för att minska exponeringen av den joniserande strålningen och användning av njurtoxiskt kontrastmedel. Vårt syfte med denna litteraturstudie var att jämföra diagnostisk säkerhet samt att beskriva fördelar och nackdelar med undersökningsmetoderna ultraljud med kontrast och datortomografi med kontrast vid kontroller efter EVAR. Utifrån vårt syfte formulerade vi en frågeställning där 14 vetenskapliga artiklar ingår i litteraturstudien.
Validering av Inertial Measurment Units som insamlare av data för drivande av OpenSim-modell
The purpose of this paper is to investigate the possibility of replacing data from highspeed filming (Qualisys motion capture) with data from Inertial Measurement Units (X-io technologies), when used to run a model of torso and pelvis in OpenSim. Qualisys motion capture data is used as the golden standard to validate the result visually and with Bland-Altman plots.In order to obtain comparable data experiments are conducted where both methods of collecting data are used simultaneously. Data from the IMU's then need to be processed in Matlab before it can be used to run the OpenSim modell. Several Matlab programs rotate the IMU data to a static reference frame, filter and integrate it, then create viritual markers that correspond to Qualisys' optical markers.The conclusion is that using IMU as a method for collecting data can replace Qualisys in some applications, but not in ones that require high precision. However, this paper only begins the examination of IMU's and there are most likely improvements to be made..
Stopptidsanalys i hyvelanläggningen vid VIDA Vislanda
VIDA Vislanda har ett behov av att veta hur effektiv produktionen är på deras nya hyvleri. Därför är arbetets syfte att undersöka stopptidslängder samt bakomliggande orsaker till stoppen på företaget. Det ingår även i arbetet att lämna förslag på åtgärder som kan leda till förbättringar i verksamhetsgrad samt reduktion av stopptid.VIDA Vislanda vill veta vilken verkningsgrad, verklig löpmeter ut och verkligt stycketal ut för varje enskild dimension och längd. Resultatet presenteras efter detta önskemål men den totala verkningsgraden för hela mätperioden har också beräknats, till 52 %. Om VIDA åtgärdar de största återkommande stopporsakrna enligt våra förbättringsförslag kommer stopporsakerna att minska och således verkningsgraden att öka..
Övergång till helkrossballast : En studie för Strängbetongfabrikerna i Veddige och Herrljunga
This exam report has been developed in association with Strangbetong AB, Sweden.The natural gravel that is being used as fine aggregate for concrete production today is an ending natural recourse and the Swedish government has decided to strongly reduce the extraction from the year of 2020. The only reasonable replacement is aggregates from crushed rocks but this material has other properties than natural aggregates. The concrete manufacturers now have to learn how to use these new fine aggregates in a cost effective way in order to ensure the quality of their concrete production.In this project, crushed aggregates and combination of crushed and natural aggregates have been tested with existing formulas for fresh concrete. The two parameters yield stress and plastic viscosity have been measured which gives a good description of the workability of the fresh concrete. Different methods to make measurements on the dry fine aggregates, has also been tested, to find out if there is any correlations between these parameters and the parameters from the measurement on the fresh concrete..
Produktivitet och lönsamhet vid skörd av skogsbränsle i klen björkgallring :
The aim of the study was to compare productivity in first thinning of birch stands, when either energy- or pulpwood was harvested. The systems total profitability was also compared by including forwarding and chipping costs. A Gremo 950 HPVR harvester was used and the same driver was used under the entire study. During the pulpwood harvest a Logmax 4000b harvester head was used and a feller buncher head made by Silvatec was used during the energy wood harvest. Six study unit pairs were located in a birch dominated stand outside Ängelholm in Skåne.
Formgivning av möbler i SWISSPEARL Carat
This thesis concerns partial discharges in stator windings and the possibility of analyzing data using statistical methods. Partial discharges, or PD, are a physical phenomenon in which discharges occur locally due to large electric fields. PD can occur in or adjacent to the insulation of stator windings and causes breakdown of the insulating materials. PD measurement can provide an idea of how widespread the PD activity is. A technique to measure and analyze PD that has become very popular over the last few decades is phase resolved PD patterns.
Stenläggning av minnesmärken - illustration av Motalaspännet
Sedan sommaren 2008 bygger Svevia AB pendeltågstation i Kimstad. I samband med detta vill byalaget göra en stensättning och illustration av Motalaspännet för att uppmärksamma fyndet av spännet som gjordes på 1800-talet, i just Kimstad. Spännet, som är av guld och ädelstenar med en diameter på nästan 20 cm, tros vara från 1300-talet och har en något oviss historia om var det är gjort samt vem som kan ha burit spännet.Denna rapport och examensarbete syftar till att presentera ett illustrationsförslag av Motalaspännet där material, placering, grundläggning samt kvantiteter och pris redovisas. Utgångspunkten för arbetet var att diskussioner mellan författaren, byalaget och handledaren skulle föras vid framarbetningen av förslaget. Byalaget presenterade i startskedet ett eget illustrationsförslag.
Konstruktion av elektrolytisk ozongenerator
The work has been carried out in cooperation with the company Zenit Design in Malmö. The project's goal was to restore, improve and produce an ozone generator. During the project, the authors sought relevant literature in databases, been in contact with US suppliers of fuel cell membranes, Asian suppliers for the processing of Teflon and Titanium parts in mechanical engineering and Swedish suppliers of various standard components. The authors had access to a temporary lab at Zenit and electron microscope at Halmstad University where material tests were performed. The authors have also had access to measurement equipment to measure amounts of ozone.During the work, the authors have mapped how an existing ozone generator works and then have their own development.
Utvärdering av kalkstens egenskaper med laboratorie- och fältmetoder.
A pavement construction designed to cope with the different type of traffic loads; it is exposed to and at the same time it can resist the effect of the climate. A road structure consists of sub- and superstructure which is divided by a boundary known as terrace. During the construction of unbound layers (base course and sub-base course) in the superstructure, it is always ensured that the material meet the requirements for bearing capacity and the degree of compaction. These parameters are controlled by various laboratory tests and control methods. To obtain increased knowledge of the material and improve the quality of the compaction in the field, it is necessary to perform laboratory tests in order to determine material properties.A base course material 0/ 32 mm limestone from Gotland (Hejdeby) was investigated in this study.
Evaluation of indirect blood pressure measurement, plasma endothelin-1 and serum cortisol in clinically healthy horses
Equine metabolic syndrome (EMS) it?s a clinical condition that includes obesity, regional adiposity, insulin resistance (IR) and laminitis. A similar syndrome exists in human medi-cine, the metabolic syndrome (MS), were systemic hypertension also is a prominent fea-ture. The systemic hypertension seen in humans with MS is partly due to a vascular endo-thelial dysfunction with an enhanced endothelin-1 (ET-1) mediated vasoconstriction. There are indications that systemic hypertension might be a feature in EMS as well but if ET-1 is involved in the development of the systemic hypertension in horses is not known.
Fukt i byggnadsmaterial : Hur man förebygger fuktskador vid materialhantering på byggarbetsplatsen
Byggsektorn har fortfarande svårigheter med att hantera fuktproblematiken. Vi har valt att fokusera på hanteringen av material i produktion. Den informationssamling vi utfört ligger till grund för vår analys och slutsats. Vi har intervjuat flera olika entreprenörer från byggbranschen för att ge oss en helhetssyn av fuktsäkerheten ute på byggarbetsplatserna. Studien påvisar att det råder brister både på beställar- och entreprenörssidan. Vi ser att det finns potential för förbättring när det så krävs.
Ökad flexibilitet i Anybus X-gateway med hjälp av Lua
HMS Networks AB develops, produces and sells communication technology for industrial automation. The product handles communication between a variety of protocols. The product treated in this project is an Anybus X-gateway Modbus-TCP Master/Client and this module is currently configured from a web-based interface. In doing so, the flexibility for handling protocols is limited to what the company chooses to add to the interface. Therefore the company had a request that the flexibility should be extended using a script language.
Evighetsträd
FSC (Forest Stewardship Council) is the major form of certification system in Swedish forestry today and its more than 11 million hectares are covering almost half of the total productive forest area in the country. Its regulations prescribe that at least 10 wind firm trees should be left behind after every clear cutting operation.
This study have taken place on 30 recently clearcut objects in Bergslagen, Sweden, were an inventory of the standing stock have been made. The research shows that, with 90 % security, the retained trees together contain 9-13 m3sk per hectare. Pine is the dominant tree and it covers more than half the numbers of retained trees and its volume cover 65 % of the retained trees total volume. Spruce is on second place with 30 % of the retained trees, but only 21 % of the standing stock.
Termografisk undersökning med samtidig analys av rektaltemperatur, hjärtfrekvens, psykiska reaktioner och specifika blodparametrar av häst som behandlats med vibrationsboxen Vitafloor :
A number of studies in human medicine has documented positive effects of whole
body vibration treatment in humans. The Vitafloor system, witch is based on
treatment of horses with vibration, has the purpose to be used in training of
healthy horses and as rehabilitation for horses with injuries in their musculosceletal
system.
The purpose of this study was to analyse what happens with a clinically healthy
horse during treatment with Vitafloor. The methods used is mainly thermography
before and after treatment, but also blood samples, measurement of rectal
temperature, heart rate, clinical examination and observation of psychic reactions
has been done.
Statistic significant changes in skin temperature in hoofs and fetlocks of front legs
has been observed after treatment with Vitafloor. Analyzing of the blood samples
showed a tendency for decrease in Kalium, and two of the horses had changes in
CK. No negative effect has been observed with the treatment of horses with
Vitafloor, and the horses seems to like the treatment.
.
Kan behandling av insomni förbättra komorbid ångest och depression?
This study investigated the efficacy of a multicomponent cognitive?behavioral intervention of insomnia, CBT-I, for patients suffering from an anxiety disorder and/or a major depressive episode together with comorbid insomnia. In particular, the aim of the study was to evaluate whether anxiety and depressive symptoms declined as a function oftreatment for insomnia. After rigorous diagnostic procedures, 8 patients were treated in a multiple baseline design. Patients experienced clinically significant reductions in insomnia-, (57 %) depressive- (75 %) and anxiety symptoms (40 %).