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1226 Uppsatser om Heat loss - Sida 47 av 82

Inverkan av olika joner och jonconcentrationer på porstorleksfördelningen i trämassa-fibrer

The basic ingredient of paper is the individual wood fibers. The property of the fibers depends on a variety of factors e.g., method of pulp production and processing. The final sheet quality depends in part on how the fibers interface between each other and therefore factors that affect the fiber size are of interest.The flexibility of the fibers depends in part on the pore water i.e., the fiber swelling. The sheet becomes less flexible at low water content which gives a loss in strength. Thus it becomes desirable to increase the water uptake.The experimental investigation described in this report consists of exposing the wood fibers to different ions and ionic strength and then measure the pore size by thermoporosimetry where a DSC (Differential Scanning Calorimeter) is used.

Nån måste väl veta vem man är": En studie av hur ungdomar skapar identitet i sju svenska ungdomsromaner

The aim of this Masters thesis is to examine how identity formation is described in a few Swedish youth novels written in the 21^st century. We apply the theories of the psychiatrist Jan Ramström and the sociologist Anthony Giddens who both assume that identity is formed in relation to the environment. Ramström stresses that adults have an important role to play in the integration of the adolescents into the adult society. Giddens stresses that people in the late modernity are affected in their identity formations because of the loss of traditions. In order to find out how identity is formed, four main questions were constructed.

Geotermi i Ungern : Undersökning av Ungerns energisituation inriktat på geotermi samt kapacitetsfaktorn för det största geotermiska värmeverket i Mellaneuropa.

Hungary?s share of renewable energy in 2010 was 7.9 %, and their renewable energy goal for 2020 is 14.65 %. Geothermal energy is one option that could help to achieve the goal, since Hungary has favorable bedrock, the temperature gradient is above average and thepermeability is high. Today Hungary is importing just over half of its primary energy supply. Because of political conflicts between nations Hungary wants to expand its own production of energy.

Bergvärme och solenergi i flerbostadshus : En förstudie över Kv. Uppfarten

The society strives for sustainable development, in the construction industry it is expressed through sustainable building. Energy and LCC analyzes increases the ability to make conscious decisions in the process. A problem in the construction industry is that energy and LCC analysis is not used to the desired extent, as they are perceived as complicated and time consuming. The report aims to achieve a more sustainable building through increased use of energy and LCC analyzes.The goal is to show how BIM can be used to improve the efficiency of the energy and LCC analyzes.The study was conducted with a literature review and a case study to answer which information that is required in a BIM model to perform energy and LCC analyzes. The study also shows which software can be used in BIM based energy and LCC analyzes and how the analyzes can be carried out efficiently.The result shows that effective analyzes may be performed if the BIM-model contains the relevant information for making analyzes.

Individers erfarenhet av icke farmakologisk behandling vid långvarig smärta : En litteraturöversikt

Aim: The aim of this study was to highlighting the experiences of individuals of non-pharmacological treatment for chronic pain.Method: The study was designed as a literature review with aim to review andcompile the articles results. This study has been based on a systematic literature search of supplementing out of an unsystematic search were 11 articles were found.Results: The participants in the studies had experienced a good effect out of non-pharmacological treatments for their pain and a improved quality of life. Based on participants´ experiences of treatment two categories occurred: body awareness and relaxation. Body awareness arose through treatments like yoga, mindfulness meditation and CBT. Relaxation occurred through treatments, like music, heat, massage and meditation.Conclusion: This study highlights how non-pharmacological treatments is experienced by individuals with chronic pain and two key areas have been identified.

Ett sviktande hjärta : patientupplevelser av att leva med en kronisk hjärtsvikt

As the occurrence of obesity increases amongst young people, so increases the risk of more people suffering from heart failure as early as during middle age. The aim is to describe the life experiences of middle aged persons living with chronic heart failure. The literature study is based on twelve published, qualitative, and scientifically proved articles derived from MedLine and Cinahl using queries representing the subject, as well as from manual searching in ScienceDirect and LIBRIS. These articles have been analyzed from a life world perspective. Four main themes and four sub themes were identified from the articles' results.

Kappa Control with Online Analyzer Using Samples from the Digester's Mid-phase

In the pulp industry, digesters are used to disolve lignin in wood chips. The concentration of lignin is measured and is called the Kappa number. In this thesis, the question of whether an online Kappa sensor, taking samples from the mid-phase of the digester, is useful or not is analyzed. For the samples to be useful, there has to be a relationship between the measured Kappa at the mid- phase and the measured Kappa in the blowpipe at the bottom of the digester. An ARX model of the lower part of the digester has been estimated.

Principalansvaret med inriktning på att en handling skall vara utförd i tjänsten - en komparativ studie och en kritisk analys av det svenska rättsläget

Svensk rätt tillämpar ett så kallat principalansvar. Principalansvar innebär ett ansvar för annans culpa och är med andra ord ett arbetsgivaransvar. Arbetsgivaren skall dock endast ersätta skada som arbetstagaren vållar i tjänsten. Gränsdragningen av vad som skall anses vara ?utfört i tjänsten? är dock inte tydlig i alla situationer.

Principalansvaret med inriktning på att en handling skall vara utförd i tjänsten - en komparativ studie och en kritisk analys av det svenska rättsläget

Svensk rätt tillämpar ett så kallat principalansvar. Principalansvar innebär ett ansvar för annans culpa och är med andra ord ett arbetsgivaransvar. Arbetsgivaren skall dock endast ersätta skada som arbetstagaren vållar i tjänsten. Gränsdragningen av vad som skall anses vara ?utfört i tjänsten? är dock inte tydlig i alla situationer.

Licentieringsf?rfarandet under frihetstiden: En Principal-Agent-analys av riksdagens maktut?vning

Denna uppsats unders?ker licentieringsf?rfarandet, som var riksdagens juridiska maktmedel f?r att avs?tta medlemmar i riksr?det under frihetstiden i Sverige, med hj?lp av en principal-agent-analys. Studien bygger p? en analys fr?n tidigare forskning av historiska dokument fr?n perioden och unders?ker hur riksdagen anv?nde sin utn?mnings- och avs?ttningsmakt f?r att styra riksr?dets sammans?ttning och beslut. Genom Linnarssons (1943) avhandling identifierades specifika fall av licentiering, de politiska konflikterna och de juridiska grunder som anv?ndes f?r att r?ttf?rdiga avs?ttningarna och via en analys av dessa genom principal-agent teorin fick vi en mer nyanserad bild av licentieringsf?rfarandet.

De sjukaste överlever : en osteologisk undersökning av nio gravlagda individer från karmeliterklostret i Ny Varberg

Osteological analysis was carried out on skeletons from nine graves from a medieval cemetery in Ny Varberg, Varberg, Halland. The graves originate from a monastery and a church, dating back to the fourteenth and fifteenth century. The main aim with this thesis has been to study health through the presence of pathologies and skeletal changes. Further aim was to compare the results from the present study with theresults from Torsten Sandbergs analysis of the same material from 1964. This comparison later showed coincidence.

"Det blir vad man själv gör det till" : -En kvalitativ studie om ensamhet och livskvalitet bland äldre.

Abstract This is a qualitative study of elderly people's experiences of loneliness and quality of life. Also the relationship between loneliness and quality of life are examined. Previous research has shown that social loneliness is about when the social context are lost while emotional loneliness can occur with the loss of close relationships. Quality of life is about a sense of connection but also the quality of life arises in the difference between the expectation of what one is and what one wishes to have. This study has shown that the interviewees preferences, activities, social networks and low expectations on their life situation makes interviewees perceive themselves to be less lonely and have a good quality of life.

Energibalansberäkning

Abstrakt -  As energy prices rise, energy-saving in buildings is becoming increasingly important. By applying different construction and installation technologies, to new buildings the energy consumption can be reduced effectively, compared to similar existing buildings. These technical measures are often an investment in the long term and will reduce energy costs significantly. The purpose of this report is to show how to reduce energy consumption in a small house. It is presented in this report that both building's technical saving arrangements (the sealing of a building) and an installation technical arrangement (changing from the F-system to the FTX-system) would reduce energy consumption in newly built detached houses, if compared with a similar existing house but without these technical measures. The report presents also detailed calculations showing how much energy an existing 2-storey house, built in the year 2007 in Eskilstuna, consumes and how much energy would be saved if these corrective measures were applied to a new building. It is also reported how much money would be saved each year over a 10 year period if the measures were applied. The results show that both solutions are a good investment in the reduction of energy consumption and hence the cost involved. Keywords: energy, heat energy, infiltration, FTX-system, free temperature effectively. .

Konsekvenser av ny teknik på en sjukhusmottagning

An often encountered problem when implementing a mass flow regulator in a rolling mill is the one with measurement of speed. The most widely used solution is to fit a pulse counter to a wheel that is in contact with the strip. Common problems with this design are for instance scratch marks on the strip and problems with the flatness measuring system.  One way of circumventing the aforementioned problems would be a non-contact measuring system. The market of today only offers systems based on the Doppler principle.This report evaluates three different systems for non-contact speed measurement. Important areas in the evaluation have been the ability to operate under normal rolling conditions, integration in existing control system and how well the sensor can be fitted to the rolling mill.

Val av teknik för hastighetsmätning i kallvalsverk

An often encountered problem when implementing a mass flow regulator in a rolling mill is the one with measurement of speed. The most widely used solution is to fit a pulse counter to a wheel that is in contact with the strip. Common problems with this design are for instance scratch marks on the strip and problems with the flatness measuring system.  One way of circumventing the aforementioned problems would be a non-contact measuring system. The market of today only offers systems based on the Doppler principle.This report evaluates three different systems for non-contact speed measurement. Important areas in the evaluation have been the ability to operate under normal rolling conditions, integration in existing control system and how well the sensor can be fitted to the rolling mill.

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