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852 Uppsatser om Noise reduction - Sida 23 av 57

?Jag tyar inte idag!? En kvalitativ studie om motivationsfaktorer till fysisk aktivitet i samarbete med Centralsjukhuset i Kristianstad

Physical activity is required for a good health and science shows a clear connection between exercise and a lower risk for disease. Still, the physical activity among the population is far from good. It is the individuals own responsibility to exercise, but the society also has a responsibility to give opportunities to exercise for the population. The aim with the study was to investigate what motivated the group of physical active people to use the Central hospital in Kristianstad?s health program.

Evaluation of a method for determinationof glutathionereductase activity inerythrocytes

Glutathione (GSH) is a molecule that consists of three amino acids: glutamic acid, cysteine and glycine. GSH has several important functions: to protect cells from free radicals, reactive oxygen species and oxidative stress. GSH exists in a reduced form, GSH, and in an oxidized dimeric form, glutationdisulfid, GSSG. The enzymes glutathionereductase (GR) catalyses the reduction of GSSG back to GSH. Nicotinamide adenine dinucleotide phosphate (NADPH) is required as a coenzyme in the reaction.

Testbänk för motorbåtsdrev

Marinediesel has, to meet there customers needs for a suitable sterndrive to powerboats, developed a prototype. The prototype is currently in the testing phase. The opportunity to test the sterndrive under load inside the workshop has not previously been possible. Until now the drive has been tested in a test bench without any load on the propeller axle. The prototype has also been tested under real conditions mounted on a boat.The idea with my thesis was to create a test bench that can run around the clock in order to be able to test things like wear and service intervals and other things that require that the test interval is long.

Kartläggning av intensivvårdspatienters sömn och faktorer som kan påverka sömn

Sleep has a recreating, health promotive and regenerative function. Research shows that intensive care patients suffer from sleep deprivation and bad sleep quality with considerable negative consequences.The aim of the report was to examine how much nocturnal sleep patients without ventilator treatment get and to observe factors that may influence sleep.Methods: An observation chart was used to collect data. The staff?s observation of the patients? night sleep and estimated nocturnal noise- and light levels in the patients? rooms were documented. The patients? answers to questions about pain and possible causes for their awakenings were noted.

Ljudreducering av värmepump

This degree project handles acoustic measurements of the heat pump EcoAir 107, made by Enertech CTC AB. The sound from the three sound sources of the heat pump, fan, compressor and four way valve, have been measured to find out how they affect the total sound level of the product.Measures to attenuate the sound level have been developed and tested. By comparing these with the sound of the heat pump, in its original state, we have found out the measures which have best effects.The best attenuating measures came to be: taped openings and holes around the compressor space, isolating the top and the bottom of the whole construction, support of the fan bottom part and shielding of the sound source with a screen at a distance of 110 mmThese measures have been tested together and an average attenuation of the total sound level with 3,9 dB have been accomplished. In the front of the fan where the continuous sound is the strongest, the attenuation was 4,7 dB.This project is meant to be used as a guide by Enertech CTC AB:s during their future developing process..

Diagnos av stiktion i reglerventiler för prediktivt underhåll

This master thesis reviews advances in detection and diagnosis of static friction (stiction) in control valves. Control valves suffering from stiction results in oscillating control loops which in turn decreases both the process stability and reliability. Perstorp AB sees a necessity to automatically detect stiction in valves before the effects of the malfunctioning valves have become too severe. This thesis presents an introduction to maintenance, control loops and how stiction in valves can affect performance of control loops.A selection of methods presented in the literature are introduced and examined using normal operating data from the site in Perstorp. Common for all selected methods is their intuitive ideas and that they are based on normal operating data and minimum amount of process knowledge.

Miljöutredning vid FORIA AB : En nulägesanalys av miljöaspekter från transporter

An environmental review has been carried out at FORIA AB, a transportation- and machine service company, to analyze the company?s environmental aspects from the transportation segment. This report describes the essential background and the methods of identifying and evaluate the environmental aspects. It also describes how the work with the environmental aspects often vary between different actors. The design of the ISO 14001 is intentionally broad in order to apply on all sorts of activities and organizations.

Energi och klimatanalys O-huset på Campus i Halmstad

AbstractThe indoor environment affects the human performance. Noise pollution, poor lightning and coloring are some of the factors that affect our work performance. The human is also affected by the air change and temperature, these factors are in most buildings possible to adjust and through this make economic savings. To find out about the indoor environment in the O-building a questionnaire was handed out, measurements/surveys and an interview was also made. 108 questionnaires where handed out to employees and students.

Utvärdering av ett värmepumpsystems prestanda till en HWC-tvättmaskin : Med fokus på fläktvarvtal och köldmedieflöde

This report was performed in order to evaluate a new technological measure and focuses generally on a heat pump system to a HWC-washing machine. The client is Asko Appliances AB, a company well known for its environmentally friendly products. The goal of this study was to improve the energy efficiency of a washing machine by combining a heat pump device to the heater of the wash water, in order to reduce the energy consumed for heating the water. Besides reducing the energy consumption in heating the water, the washing machine was required to meet low noise and short operating time specifications. For that purpose, nine trials in three test series have been carried out.

Bilden som kommunikationsverktyg

Transportation of pigs might be a welfare problem. Stress during and after transportation can negatively affect the meat quality or cause carcass damages, which leads to major economic losses every year. The transportation chain can be divided into several stages; loading, transport and unloading. This literature review focuses on unloading of pigs from a transport. When arriving at an abattoir pigs can be fatigued and need to be as smoothly unloaded as possible.

Factors influencing pig behaviour during unloading from a transport

Transportation of pigs might be a welfare problem. Stress during and after transportation can negatively affect the meat quality or cause carcass damages, which leads to major economic losses every year. The transportation chain can be divided into several stages; loading, transport and unloading. This literature review focuses on unloading of pigs from a transport. When arriving at an abattoir pigs can be fatigued and need to be as smoothly unloaded as possible.

Faktorer i familjen som kan påverka det överviktiga barnets möjlighet till viktnedgång

Bakgrund: Övervikt och fetma är en global epidemi. Fetma kan orsakas av arv, miljö och beteendemässiga faktorer. Övervikt kanleda till flera följdsjukdomar. Viktminskning kan ge ökad livskvalité pch psykiskt välbefinnande. Ur ett hälsoekonomiskt perspektiv är det av vikt att det hälsofrämjande arbetet startar tidigt i barndomen.

Optisk sortering av matavfall : en jämförelse med en minskning av svinnet

The purpose of this study is to compare the energy related and environmental consequences of implementing optical sorting as a means of waste collection with those of reducing food waste. In addition to studying the possibility of implementing optical sorting in downtown Stockholm, the yielded amounts of energy from waste collection and reduced wastage will be calculated. This is done by way of literature reviews and interviews. The amount of energy that can be generated through optical sorting and biogas production via anaerobic digestion in downtown Stockholm is 29-44 TJ/year, compared to 118 TJ/year saved by completely eliminating food waste. The generated biogas can replace fossil fuels, but the required food waste contributes to increased greenhouse gas emissions as well as reduced bio diversity and eutrophication during the wasted food?s lifecycle.

Dagens Nyheter 3.0 : En kvalitativ jämförelsestudie av dagstidningens form i tryckt format respektive applikationsformat

A daily newspaper?s main purpose is to inform its readers without creating noise. Theimportance of the visual presentation is therefore of weight for an effectivecommunication process. This study informs about the importance of typography inthe visual decoding process. The study includes the Swedish newspaper DagensNyheter?s transition from printed media to digital media adapted to an Ipad.

Över tröskeln : Ett nytt boendefenomen

Ett lågtröskelboende vänder sig till individer med missbruks- och boendeproblematik där intentionen är att erbjuda individen stöd i dennes alkoholproblematik samt en trygghet i boendet utan att ställa krav på nykterhet. Studiens syfte var att undersöka fenomenet: upplevelsen av att bo på ett lågtröskelboende utifrån ett brukarperspektiv, samt vad flytten till lågtröskelboendet har inneburit för de boendes livskvalitet. I analysen användes ett fenomenologiskt perspektiv med livsvärldsteorin som utgångspunkt. Resultatet visar studiens fenomen som existentiell samhörighet i alkoholmissbruk. Den delade alkohol- och boendeproblematiken gör att de boende upplever sig som jämlika med varandra, vilket också skapar en känsla av gemenskap och tillhörighet.

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