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852 Uppsatser om Noise reduction - Sida 39 av 57

Utvärdering av AOT för ett pilotskaligt, recikulerat akvakultursystem för fiskodling

With the climate change issues growing in importance on the social agenda, the field of urban masterplanning is of no exception when it comes to minimizing the carbon footprint in a variety of projects. The aim of this thesis has been to prepare the Carbon Critical Masterplanning tool, a software plugin for carbon dioxide emissions assessment developed by Atkins, to be used in Swedish conditions. The main targets were to improve the areas of the tool associated with energy conversion and renewable energy sources, and to test the tool in a real case. A planned construction of a new campus in Albano, Stockholm was chosen for the pilot study. A 3D model was built in the tool and the carbon footprint was calculated for a variety of combinations for energy supply to the future area.

Chewing behaviour of growing cattle

Chewing behaviour includes both eating and ruminating activity. Chewing behaviour is of great importance for the feed intake as through the action of chewing (i.e. eating and ruminating) animals mechanically process the forages in small particle sizes and prepare the food for digestion. As cattle grow the chewing behaviour changes along with increasing body weight and chewing efficiency is increased. The aim of this thesis was to review the available scientific literature in order to describe chewing behaviour in growing cattle, as well as the factors that affect this behaviour.

Vibrationsdämpning av värmepump

Thermia Värme AB is one of the market leading manufactures of heat pumps. In order tomaintain this position, the company wants to improve the vibration characteristics of theirproducts. The aim of this thesis is to develop product design changes that lead to a reductionof vibrations in the heat pump Thermia Diplomat 8.The main cause for vibrations in the system is flow pulsation and mechanical forces inducedby the scroll compressor. Vibration is transmitted through the compressor piping and receivedby the heat exchangers, from where it is further transmitted to the connection points for theradiator and heat source circuits.A number of design changes in order to improve the vibration characteristics have beenevaluated through calculations and practical experiments. The changes have included thecompressor and heat exchanger mountings, the compressor suction and discharge line pipingand also pulsation dampening.The results of the experiments show that the vibration levels in the connections for the heatingand brine circuits can be decreased strikingly through changes in suction and discharge linepiping.

Effekt av psykodynamisk psykoterapi : - Analys av symptomförändringar från terapistart till avslutning.

Inledning: Syftet med denna studie är att, utifrån ett insamlat material vid S:t Lukas mottagningar i Stockholmsområdet, undersöka symptomförändring från start till avslutning i psykodynamiskt inriktade psykoterapier.Frågeställningar: Den övergripande frågeställningen är om patienter och terapeuter bedömer att terapierna haft någon effekt och i så fall vilken. Vidare om bakgrundsfaktorer och självbild påverkat symptombelastningen.Metod: Studien har genomförts med hjälp av självskattningsformulär som fyllts i före och efter behandling. Patienterna har fyllt i Symptom Checklist (SCL-90) och terapeuterna ett frågeformulär där de skattat patienternas besvär. Efter inomgruppsjämförelser har jämförelser gjorts med ett normerings-material.Resultat: Det sker en signifikant symptomlindring under terapierna. Störst är förändringen när det gäller depression, ångest och interpersonell sensitivitet samt i det sammantagna genomsnittsvärdet.

"Fettpärlan har vi så det räcker till alla!" : En jämförande studie av hur fyra lärare på de studieförberedande och yrkesförberedande programmen tänker och arbetar kring och med litteraturundervisning

On 1 January 2005, IFRS (International Financial Reporting Standards)was mandatory for all listed companies within the European Union. The introduction is to create a transparent and consistent reporting. Mainly to provide companies, investors and financiers the same access to world capital markets. Since the introduction of IFRS, the goodwill value is determined by annual impairment tests. If an impairment of goodwill is a fact the goodwill decreases in value.

Carbon Critical Masterplanning tool : klimatpåverkan från samhällsplaneringsprojekt

With the climate change issues growing in importance on the social agenda, the field of urban masterplanning is of no exception when it comes to minimizing the carbon footprint in a variety of projects. The aim of this thesis has been to prepare the Carbon Critical Masterplanning tool, a software plugin for carbon dioxide emissions assessment developed by Atkins, to be used in Swedish conditions. The main targets were to improve the areas of the tool associated with energy conversion and renewable energy sources, and to test the tool in a real case. A planned construction of a new campus in Albano, Stockholm was chosen for the pilot study. A 3D model was built in the tool and the carbon footprint was calculated for a variety of combinations for energy supply to the future area. The results show that use of locally installed renewable energy sources can reduce the total climate impact when life cycle perspective is applied.

Prestandaförändringen hos en bergvärmeanläggning efter fem års drifttid

The aim of this report was to do a case study at a geothermal heating system which has been in operation for about 5 years, and study if its performance has changed during this period of time. A literature study about the processes involved was also done in purpose of background knowledge.The tenant-owner?s association Duvan at Petterslundsgatan in Uppsala installed year 1999-2000 a geothermal heating system. The purpose of this installation was that they hoped it would lead to a smaller usage of district heating which would lead to a reduction of the heating expenses for their buildings. The geothermal heating system consists of 19 energy wells and 4 geothermal heat pumps, and it is one of the first systems of that size in the region of Uppsala.

Reducering av effektförbrukning i inbyggda system med Linux

Linux is a growing operating system in embedded systems. Today, Linux is not only in heavy servers but also in cell phones, PDAs, cameras and other devices running on battery power. While current technology is more energy efficient, more and more technologies are implemented into a single unit resulting in an overall increase of power consumption.Low power consumption is an increasingly important feature of a system today. Lower power consumption means lower costs, less environmental impact, and longer life for applications that runs on batteries.This work compiles methods to reduce power consumption of Linux systems. The work includes examining whether the available opportunities are platform-specific or of a more general nature.

Carbon Critical Masterplanning tool : klimatpa?verkan fra?n samha?llsplaneringsprojekt

With the climate change issues growing in importance on the social agenda, the field of urban masterplanning is of no exception when it comes to minimizing the carbon footprint in a variety of projects. The aim of this thesis has been to prepare the Carbon Critical Masterplanning tool, a software plugin for carbon dioxide emissions assessment developed by Atkins, to be used in Swedish conditions. The main targets were to improve the areas of the tool associated with energy conversion and renewable energy sources, and to test the tool in a real case. A planned construction of a new campus in Albano, Stockholm was chosen for the pilot study. A 3D model was built in the tool and the carbon footprint was calculated for a variety of combinations for energy supply to the future area.

Butikskommunikationens viktiga roll

Studien är främst till för att bringa klarhet i hur en butik bör arbeta med visuell marknadsföring för att nå konsumenten och skapa en positiv reaktion hos denne. Vi har dessutom undersökt vikten av relationen till kunden, och hur företaget arbetar med det genom relationsmarknadsföring. Vi har fått fram vårt resultat genom marknadsundersökningar och observationer inne i och i anslutning till en butik, samt genom en intervju med den ansvarige för butikskommunikationen i samma butik. Till vår hjälp har vi arbetat med Peak Performens Borås, det är kring denna butik hela studien kretsar.Den personliga intervjun med den person som är ansvarig för butikskommunikationen på Peak Performens Borås gav oss information om problem och utmaningar ur deras synvinkel. Materialet gav oss även bra bakgrundsinformation att jämföra resultaten från marknadsundersökningarna och observationerna med.

Marknadsföring i podcast

Podcast is a new audio media in Sweden and has become larger and increasingly more popular in the past few years. In line with this, companies have seen the opportunity to use this type of marketing in the new coveted media and have created a new marketing tool in the form of sponsorship. Previous studies in this field indicate that this is a very effective method to reach a broad audience, but it still is a relatively new area with very little research in existence today. This study is an analysis of how receptive listeners are to marketing through podcasts and the ability companies have to create a sustainable and effective strategy for successful marketing through this type of medium. The collection of data for this study consists of two different qualitative interviews, the first one with listeners that were chosen, and the second with the sponsor company for two of the largest podcasts in Sweden. The essay´s empirical evidence shows how receptive listeners are to marketing via podcasts, what their podcast habits look like, what form of approach in marketing they prefer, and how often they take part in different offers. From the interviews with listeners and sponsoring companies in the study, it is concluded that the best and most effective strategy for marketing through podcasts is to weave advertising in the conversation and therefore increase the credibility and disturb the listener as little as possible.

Förbättring av Egenvärmehus : En fallstudie av ett flerbostadshus, Kv. Fyrtornet

Energy efficiency has become a very topical issue that has been discussed throughout the European Union for preventing negative environmental impacts that have been associated with the consumption of energy. In the residential sector have mainly municipalities set strict requirements for the reduction of energy consumption while the renewable energy has been asked. Different concepts of low-energy buildings have been developed to reduce the cost of operation and maintenance in existing buildings such as in new ones.This thesis has aimed to minimize the energy cost of a large building which has had low energy consumption features originally. Energy reviews has been initiated in order to be able for showing how the house electricity could be carried out even more efficiently.The work was initiated through a literature study to clearly increase the reliability on the energy subject. Different concepts of low-energy buildings have been treated in connection with its specifications, afterward those have been compared with the obtained results.

Bedömning av hjärtpåverkan hos patienter med cytostatikabehandling : Global strain och ejektionsfraktion för vänster kammare som metoder att bedöma hjärtpåverkan hos patienter som behandlas med hjärttoxisk cancerbehandling

Inom disciplinen kognitiv ho?rselvetenskap tilla?mpas en integrerad ansats da?r taluppfattning beskrivs ur ba?de ett auditivt bottom-up-perspektiv och ett kognitivt top-down-perspektiv. Studien underso?kte hur taluppfattning varierar med, respektive utan top-down-sto?d och vad de kognitiva fo?rma?gorna uppma?rksamhet, minne och inhiberingsfo?rma?ga hade fo?r inverkan. Taluppfattningsfo?rma?ga utva?rderades med hja?lp av ett Speech-In-Noise-test (SIN-test) som bestod av tre deltest da?r enstaviga ord presenterades i en ofo?rdelaktig miljo? besta?ende av ro?ster som talande i mun pa? varandra.

Gallring med vinkelkran : en jämförande studie av skördarkran med och utan horisontellt ledad vipparm

One of the most important components of a harvester is the crane. Most harvester cranes are only possible to pivot (or horizontally rotate) at the crane pillar. Cranab in Vindeln, Sweden, has developed a new type of harvester crane which has an extra pivot point on the outer boom. This makes it possible to reach around residual trees, easing thinning work in dense stands. The aim of the study was to analyze if the use of a pivoting outer boom (POB) crane gave an increase in thinning production and if there were any differences in time consumption between the work elements for the POB crane and a conventional crane. A Valmet 911.3 equipped with a POB crane was used in the study.

Karaktärisering av avfallsbränslen

All products will eventually end up as waste, which in a sustainable society has to be handled in an efficient and environment friendly way. This report focuses on waste fractions meant for combustion, often difficult to characterize. However, more homogeneous fractions that are treated biologically are also discussed.The study concerns the region of Borås, Sweden, where the waste plant Sobacken has provided a good starting point. On this site, fuel to the Energy-from-Waste plant of Borås Energi is prepared and the biological waste is treated through anaerobic digestion.One important part of the study has been to collect experience-based knowledge from the technical staff at Sobacken and Borås Energi. This information was compiled into an overview of wanted and unwanted fractions to the preparation plant and the boilers respectively.

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