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Modelling the outdoor performance of wood products - A review on existing approaches

Service life planning and performance classification are key issues in the building sector. Well-functioning 'performance models' are absolutely essential to predict the service life and functionality of buildings, building assets, and building products overtime. Different types of performance models have been established for various building materials, but cannot necessarily transferred to wood-b

Growth of ectomycorrhizal fungi in drained peatland forests with variable P and K availability

The aim of this study was to investigate how the biomass of extramatrical mycorrhizal mycelia (EMM) is influenced by the addition of different phosphorus (P), potassium (K) and PK fertilizers in peatland forests with variable P and K availability. Four fertilizers were used: apatite, biotite, Rauta-PK (TM) (apatite and ferrosulphate) and a test fertilizer (50% apatite and 50% recycled iron phospha

Fitness cost of pheromone production in signaling female moths

A secondary sexual character may act as an honest signal of the quality of the individual if the trait bears a cost and if its expression is phenotypically condition dependent. The cost of increasing the trait should be tolerable for individuals in good condition but not for those in a poor condition. The trait thus provides an honest signal of quality that enables the receiver to choose higher qu

Canonical cerebellar graph wavelets and their application to fMRI activation mapping

Wavelet-based statistical parametric mapping (WSPM) is an extension of the classical approach in fMRI activation mapping that combines wavelet processing with voxel-wise statistical testing. We recently showed how WSPM, using graph wavelets tailored to the full gray-matter (GM) structure of each individual’s brain, can improve brain activity detection compared to using the classical wavelets that

Dimensionering av en bågbro i trä - jämförelse av handberäkningar och Finita Element Metoden

In the past it was common to build in timber but in the last 150 years, steel and concrete in particular have been the dominating material in bridge-buildings. This is mainly due to not having mastered the timber construction to the same extent as steel and concrete. Nowdays the interest in timber bridges have increased and the technical solutions have been greatly developed in the last 15 years.

Prefabricated timber-concrete composite system

Timber-concrete composite structures were originally developed for upgrading existing timber oors, but during last decades, they have new applications in multistorey buildings. Most of the research performed on these structures has focused on systems in which wet concrete is cast on top of timber beams with mounted connectors. Recently investigations on composite systems were performed at Luleå Un

A feasibility study of a network arch bridge with glulam arches

The drive of using more renewable material has increased the interest in timber bridges. This makes it more interesting in looking in to new ways of constructing timber bridges. Most timber bridges for road traffic are using an arch with a hanging deck suspended from the arch using vertical hangers. This master thesis has looked at the possibility of using a system (developed for steel arch bridge

Timber compression strength perpendicular to the grain - testing of glulam beams with and without reinforcement

I och med övergången från den svenska konstruktionsnormen, BKR, till den nya europeiska normen, Eurocode, har både karaktäristiska värden och tillvägagångssättet för beräkning av träts hållfasthet förändrats. Trä som konstruktionsmaterial är även specifikt påverkat, då ett nytt klassificeringssytem har införts i samband med övergången till Euorocode. Träts hållfasthet har överlag blivit nedimensio

Energianvändning i lågenergihus - analys av mätningar från 97 lägenheter med passivhusteknik

Husen i kvarteret Blå Jungfrun är byggda enligt passivhusteknik vilket innebär att bostaden till största del skall värmas av internvärme från elektriska apparater och personer. På grund av brukarnas olika vanor kommer detta innebära en viss spridning i hur mycket komplementvärme som kommer att behöva tillföras utöver internvärmen. Med detta i åtanke har användningen av hushållsel, komplementvärme

"Jämställdhetens blinda fläck" - om anhöriga som vårdar äldre

Enligt 2 kap 2 § socialtjänstlagen (2001:453) har kommunen det yttersta ansvaret för att de som vistas i kommunen får det stöd och den hjälp som de behöver. Det innebär bland annat att vård och omsorg är en offentlig angelägenhet och ett offentligt ansvar. Trots det är den vård som utförs av anhöriga och andra närstående personer en betydande och, till följd av nedskärningar i den kommunala omsorgArticle 2 § 2 in the Social Services Act (2001:453) declares that the municipality has the ultimate responsibility to see to that the individuals in the municipality receive the support and help they need. This means that health care is a public concern and a public responsibility. Despite this regulation, the care provided by relatives is, as a result of cuts in municipal care, a significant and

Cultural racism without race : an exploratory insight into the discrimination and self-perception of the Sweden Democrats

This study presents a fresh, humanistic perspective into the worldview of a rarely studied group: The Sweden Democrats. Having entered the Swedish Parliament in 2010, the Sweden Democrats are a controversial nationalist-populist party, and they are currently the only major party in Sweden rejecting the country’s famed multiculturalism model. The Sweden Democrats, and other Swedes who are openly cr

Beräkningsmetoder för ventilationskanalsystem

För att uppfylla samhällets krav på ett bra inomhusklimat i lokaler och byggnader krävs det korrekt dimensionerade ventilationssystem. Ett korrekt dimensionerat ventilationssystem är ett system som levererar rätt flöde vid låga hastigheter och låga tryckfall. Detta innebär utöver energi- effektiv distribution också reducerat buller från både luftbehandlingsaggregat och ventilations- kanalsystem.