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586 Uppsatser om Reduction - Sida 39 av 40
Samband mellan lågt tryck i dricksvattenledningar och magbesvär - En utredning av hur lågt tryck på dricksvattenledningsnätet vid lagning av läckor påverkar sjukligheten hos Göteborg Vattens abonnenter.
Two elementary schools are now being built in Gråbo (in the municipality of Lerum),Röselidsskolan and Ljungviksskolan, which are both designed with solar thermalcollectors for the schools domestic water heating. During the summer while thelargest amount of solar heat can be generated, the activity hence the domestic wateruse in the schools are heavily reduced. Both schools are connected to the local districtheating system which makes it possible to use the solar collectors to deliver heat tothe district heating.The purpose of this thesis is to evaluate the two systems mentioned above and todetermine which system is more suitable to apply on a school. The building whichconditions were used for this evaluation is Röselidsskolan.A solar heating plant of each system type was dimensioned from the expected andknown conditions of the building. The purpose with the dimensioning was to makethe solar plants replace the ordinary energy source as much as possible.
Ljudisolering i prefabricerade betongstommar. En fältmätning av luft- och stegljudsisolering.
Two elementary schools are now being built in Gråbo (in the municipality of Lerum),Röselidsskolan and Ljungviksskolan, which are both designed with solar thermalcollectors for the schools domestic water heating. During the summer while thelargest amount of solar heat can be generated, the activity hence the domestic wateruse in the schools are heavily reduced. Both schools are connected to the local districtheating system which makes it possible to use the solar collectors to deliver heat tothe district heating.The purpose of this thesis is to evaluate the two systems mentioned above and todetermine which system is more suitable to apply on a school. The building whichconditions were used for this evaluation is Röselidsskolan.A solar heating plant of each system type was dimensioned from the expected andknown conditions of the building. The purpose with the dimensioning was to makethe solar plants replace the ordinary energy source as much as possible.
An assessment of public procurement of timber buildings : a multi-level perspective of change dynamics within the Swedish construction sector
The construction and use of buildings in the EU accounts for half of the EU?s extracted materials and energy consumptions, and a third of greenhouse gas emissions. In the past decade, the construction sector has responded to such concerns by focusing on post production energy efficiency. However, new findings indicate that upstream construction processes influence emissions significantly ? necessitating a shift in focus to include material choices and building processes.
Metalliserings och uppkolningsmekanismer vid reduktion av
direktreduktionspellets
Sedan 1971 tillverkar LKAB pellets för direktreduktion. Dagens pellets,KPRS (Kiruna Pellets Reduction Special), med tillsatser av dolomit, kalksten, bentonit och organiskt material framställs kommersiellt på KK3 pelleteseringsverket i Kiruna av magnetit. Pellets tillverkas i huvudfraktioner 9-12,5 och 12,5-16 mm vilka fylls proportionerligt i reduktionsugnen. Mängden såld pellets uppgår till cirka 4 Mt per år. LKAB undersöker reducerad pellets bland annat med avseende på fysisk hållfasthet, ihopkladdningsgrad och olika faktorers påverkan på metalliserings- och uppkolningsgrad.
Drivkrafter & Bromsklossar för Innovation i Professional Service Firms - En fallstudie av två Big Four byråer
SAMMANFATTNING Examensarbetets titel: Drivkrafter & Bromsklossar för Innovation i Professional Service Firms ? En fallstudie av två Big Four byråer Seminariedatum: 4 juni 2008 Ämne/kurs: FEKK01, Examensarbete kandidatnivå, 15 poäng Författare: Noel Lindell, Sebastian Sedeki, Christofer Österlindh Handledare: Håkan Lagerquist Nyckelord: Tjänsteinnovation, Processinnovation, Professional Service Firm, Big Four, Innovation Syfte: Syftet är att skapa en djupare förståelse för hur man arbetar med innovation och vilken syn man har på innovation i Big Four byråerna. Vi strävar efter att förklara hur man arbetar med att tillvarata inventioner, hur innovation uppstår inom olika fält och i vilken utsträckning. Ambitionen är att vårt resultat ska vara normativt för hur man ska kunna öka innovationsgraden i en Big Four byrå. Metod: Studien är en kvalitativ fallstudie med abduktiv ansats.
Effekter av gödsling i äldre tallbestånd på renbetesväxter i fält- och bottenskikt :
Reindeer husbandry and Forestry are both area related industries and will in big extent use the same lands. Conflicts often arise because of that the industries have different interests. Many of the activities done by the forestry influences the reindeer husbandry in an undesirable way, simultaneously as the reindeer husbandry activities can have negative consequences for the forestry. One such forestry activity is fertilization.
It was during the 1960´s forest fertilization began to be practiced and the reason was that the increase in growth that the fertilization gave could be able to cover for the future shortage in wood many feared.
During the 1970´s when the fertilizing activities were most intensive about 200 000 ha was fertilized annually.
Free cow traffic in automatic milking systems (AMS) : a case study on nine commercial dairy farms in Sweden
In Automatic Milking Systems (AMS), cows are kept in a free stall barn equipped with one or several milking units (MU). The cows? activities in the system are called cow traffic. There are three types of cow traffic systems: guided, partly-guided and free. Free systems have no gates, allowing the cows access to the feeding and resting areas at any time.
Snusets påverkan på balans : skillnad i posturalt svaj hos dagligsnusare före och efter uppehåll från snusbruk
SyfteSnusandet har ökat de senaste åren, särskilt bland kvinnor och yngre personer och till flera samhällsgrupper. Rökning har under många år genomgått rigorös forskning och därigenom bevisats vara förenat med ohälsa. Däremot är forskning på snusanvändandets hälsoeffekter eftersatt. En fysiologisk effekt som föreslagits av långvarigt snusande är påverkan på balans (posturalt svaj). Uppsatsens huvudsyfte är att undersöka effekten på balans av ett långvarigt (sex veckor) uppehåll från snus i en grupp av dagligsnusare. MetodI studien genomförde dagligbrukare av snus (n=13) tester av posturalt svaj före och efter sex veckors uppehåll från snus.
Frigörelse av kvicksilver och metylkvicksilver till bäckvatten under olika perioder efter skogsavverkning :
High levels of Hg in fish in Swedish lakes have been a problem along time in Sweden. The major concern is production and accumulation of the most toxic form of mercury; methyl mercury (MeHg). Consequently, in about half of our 83 000 lakes fish contain concentrations above the recommended limit for human consumption of 0,5 mg mercury per kg fresh weight (most of it in the form of MeHg). Consumption of fish containing too high levels of MeHg may cause problems for both humans and animals.
Three major sources of MeHg in surface waters are: 1) runoff from terrestrial areas, 2) deposition from the atmosphere, and 3) internal production of MeHg in lakes and streams. The aim of this study was to investigate the effect of clear-cutting on the concentration of Hg and MeHg into draining streams.
Arbete på väg: Säkerhet vid passerande fordonstrafik
Byggbranschen ställs inför stora prövningar med högt satta mål inom klimat- och energipolitiken och en omfattande påverkan på naturmiljön till följd av dess stora material- och energiomsättning. Demonstrationsprojekt i byggbranschen anses vara ett viktigt steg i utvecklingen av ny byggteknik, men samtidigt finns det ett gap mellan goda resultat som demonstrationsprojekten kan uppvisa och det traditionella arbetssättet (Femenías, 2004) . Samtidigt som det finns ett behov av satsningar på miljöanpassad nyproduktion, finns det också ett stort behov av god förvaltning av våra befintliga byggnader. Bebyggelsen som helhet förnyas väldigt långsamt; drygt 90 procent av de hus som finns år 2020 är redan byggda (Miljövårdsberedningen, 2004). Byggnaders driftsskede har en betydande del i bygg- och fastighetssektorns miljöpåverkan (Byggsektorns kretsloppsråd, 2001), vilket ställer höga krav på fastighetsbolag och fastighetsförvaltare.Syftet med denna rapport är att belysa fastighetsförvaltarens roll i arbetet mot en hållbar utveckling, men också den eventuella problematik som råder med förvaltning av fastigheter som byggs som miljöprojekt.
Odlingens och lagringens inverkan på utsädes grobarhet :
At seed-growing the aim is to produce a commodity with high germination capacity, good soundness
and purity, and also slight admixture of seeds from other species. The capacity of germination and the
vigour of the seeds may become impaired in consequence of mechanical damage, infection of diseases,
growth of mould, attacks of vermin, high drying temperature, secret germination, sprouting in the ears
etc. The germ belongs to the outer and most unprotected parts of the seed, and consequently this is
much exposed. Even quite sound seeds can instantaneously have low capability of germination. It can
be due to the fact that the seeds are in rest of germination, i.e.
Handen bakom Vegeholms engelska park - en studie av parken och dess uppkomst
A boom in horticulture characterized the 18th century in Sweden and Skåne. Parks and gardens were gradually built out to become, at the end of the 18th century, large and comfortable facilities which responded to European parks. During the late 1700s the new fashion came to Sweden. In Sweden it was named ?the English style? which directly refers to the English expression ?Romantic style?.
Kvickrotsstudier: 1. Kvickrotens reaktion på myllningsdjup, kvävemängd och kväveplacering i konkurrens med gröda. 2. Reducerad glyfosatanvändning på trädad åkermark :
1. Reaction on burial depth and nitrogen availability and placement in competition with a crop
In this trial it was investigated how couch grass (Elymus repens) changes its ability to compete in stands of wheat and barley with different burial depth and different amounts and placement of nitrogen. More knowledge in this area can be valuable in the attempt to decrease the use of herbicides and still keep the weeds under control.
The trial was carried out in the summer of 2004 as an outdoor pot experiment. The pots contained 15 litres of soil with a surface of 0,06 m2.
Adhesion av mikroorganismer till lignocellulosa
The aim of the project was to develop a method to investigate differences in adhesion of microorganisms to materials that contains lignocellulose. The method was tested on a gram-positive (Micrococcus lutea) and one gram-negative (E-coliJM109) bacteria.The study was begun by cultivation of the two microorganisms. The cultivation was done to calculate the generation times of the bacteria and to obtain growth curves. Cells from these cultivations were also frozen (-70ºC) and later used for inoculation.At STFI-Packforsk AB the total charge on the mass was measured and later a conductivity titration on the mass was executed as well, all to find out more about the different properties of the mass. Properties that in a later part of this study could possibly be linked to the adhesion of cells to the pulp.
Kokvigeproduktion baserad på köttraser : en fältstudie
Most of the beef production in Sweden has been integrated with milk production. Since the 1990:s, the number of dairy cows has decreased. A specialised beef production has developed in purpose to compensate for this decrease. The consumption of beef have increased in the last decade, but the Swedish production has no followed this trend. In 2004, the percentage of beef self-sufficiency in Sweden was 60 %.