No abstract provided. / Thesis / Candidate in Philosophy

This project includes a small study of Västerås city's housing needs, and a proposal on theuse of the property 1:207, Lantmännens silo in the Eastern Harbour, Västerås.The project intends to produce a basic study of the useful systems for this rebuilding projectwith regards to sustainable development and energy saving light buildings.The end result, which consists of a detailed visualization of the proposal, intends to becomean iconic natural focus for the Eastern port of Västerås and an example of the use andadaptation of existing structures.The property must also link the eastern parts of Västerås with the center through anextension of Mälarleden.The work has been performed through literature studies, site visits, contacts with the City ofVästerås and by calculations.The proposal consists of architectural proposals drawings and visualizations.Furthermore, a suggestion is given of how the property can be used and fitted into theoverall plan for urban density development currently underway in the city of Västerås.Computer programs used have been Microsoft Office Excel, AutoCAD and ArchiCAD.

Twenty-two sediment samples were collected from Kaohsiung Harbour, and it¡¦s neighboring coastal area, Taiwan and analysed for a suite of n-C10-C35 aliphatic hydrocarbons and fifteen polycycilc aromatic hydrocarbons (PAHs). The average total concentration of n-alkanes was 4.327 £gg/g dry wt. (0.461-22.601 £gg/g dry wt.) and PAHs was 0.588 £gg/g dry wt. (0.088-1.75 £gg/g dry wt.). The highest n-alkanes and PAHs concentrations were recorded in samples from D and A stations in Kaohsiung Harbour ; stations D and A are near the outlets of Chyan-Jenn and Jen-Ai rivers, respectively. The sources of n-alkanes are probably contributed form origins of petrogenic, biogenic and higher plants according to the value of CPI (carbon preference index), chromatogram of UCM (unresolved complex materials), and n-C16 ratio etc.; while PAHs were contributed mainly from combustion in coastal areas and petrogenic in harbour areas based on the ratios of total combustion and LMW/HMW ratios. Overall, sediment concentrations of n-alkanes and PAHs in Kaohsiung coastal area were similar to literature in the world. The potential for biological effects due to PAHs is found to be low based as their individual PAHs concentrations are in general lower than effects most existed sediment quality guidelines, except Acenaphthaene, Anthracene, Benzo[a]anthracene, and Fluorene.

Thesis (Ph. D.)--University of Hong Kong, 1987.

Thesis (M. Phil.)--University of Hong Kong, 1981.

Thesis (M. Phil.)--University of Hong Kong, 1987.

The analyses of benthonic foraminifera in surface sediments for two-years (Oct. 2007-August 2009) and cores from Halifax Harbour (HH) were essential for short-term monitoring, and reference environment reconstruction for the remediation that started in 2008. The distribution of foraminifera in the surface sediments indicates a lateral environmental variation and positive correlation to the pollution rate in HH as the environmental purity increases seawards. The treated area, Inner Harbour, recorded a rapid environmental recovery during treatment period (2008), and reverted to its former characteristics after treatment stopped (early 2009). This recovery represented by an increase in both diversity (from <12 to >20 species) and abundance (from 120–880 to 1350-1750 individuals). Additionally, the assemblage during that period witnessed a decrease in opportunistic species (<50%), shell deformities (<11%), and inner linings (17%), and a significant increase in calcareous species. The assemblage in pre-impact environment, as inferred from cores, has a high diversity (>30 species) and abundance (>4000 individuals), a dominant calcareous record (>60%), and lower deformities (3-4%). The gradual environmental degradation due to organic enrichment in the harbour caused an increasing foraminiferal decimation to reach dramatic levels with the huge growth of Halifax city since late 1950s. This decimation led to dominance of opportunistic species (e.g., agglutinated forms such as Eggerella advena, and Reophax scottii), abundance of shell deformities, and complete absence of calcareous tests, leaving only their inner linings. Analysis of benthonic foraminifera in two cores from Sydney Harbour (SH) helped to compare contamination types in both areas (domestic in HH vs. industrial in SH). The domestic pollution in HH developed an agglutinated assemblage with low diversity, low abundance, and high ratios of inner linings. In SH the assemblage showed higher diversity (>22 species) and abundance (>4000 individuals), dominant calcareous record (>50%), and low inner linings (<10%) together with some species that had never been observed in such cold waters in Nova Scotia (Ammonia beccarii).

Located in the Harbour of Cork, this work encourages the Harbour to turn back upon itself and re-establish the collective memory of transport by water. It was inspired by the Harbour Authority’s decision to introduce a passenger ferry network, servicing the City and the towns along the harbour. The meeting of the people and their harbour is to be finely nuanced through new installations, which facilitate the landing of these new vessels. Without these comprehensible points, which together create boundaries and act as threshold, the harbour is immense and continually shifting. These interventions intend to create a middle space between the landscape edge and the vast harbour: a type of ‘airlock’ which prepares the pedestrian for passage, using tools of sequencing and reframing to direct views. The project is investigated through mapping with an architecture that addresses the shifting scale along the harbour and a conversation begins between the macro and microcosm.

Havet och skärgården är viktiga för Nynäshamn kommuns attraktivitet och identitet. Enligt översiktsplan är det även viktigt för kommunen att fortsätta förstärka kopplingen till vattnet genom att utveckla dom olika hamnar till livliga knutpunkter. Detta tillsammans med kommuns brist på högutbildad arbetskraft och betydande hälsoproblem skapar grunden till det här projektet.  I Gröndalsviken finns en småbåtshamn som kommunen har planer på att expandera. Platsen kan även uppfattas som en knutpunkt för tre olika områden där tydliga skillnader i inkomst och utbildning finns. Den närliggande tågstationen gör också platsen lätt tillgänglig för resten av kommunen. Allt detta gör att Gröndalsviken har en stor potential för en offentlig byggnad där även utbildning inom båtbyggeri erbjuds.  Gröndalsviken är också ett område där vatteninivån kommer höjas inom snar framtid. Denna förändring ville jag ta hänsyn till i projektet genom att placera byggnaden lite högre upp på en betongplatta som då också blir ett stort offentligt rum för hela kommunen. I projektet har jag fokuserat på att behålla siktlinjer och skapa flöde genom byggnaden för att betona utrymmets offentliga karaktär. Som ett resultat består byggnaden av flera volymer som öppnar sig både åt vattnet och inlandet. / The sea and the archipelago are important for Nynäshamn municipality's attractiveness and identity. According to the city plan, it is also important for the municipality to continue to strengthen the connection to the water by developing the various harbors into lively hubs. This together with the municipality's lack of highly trained workforce and significant health problems create the basis for this project. In Gröndalsviken there is a marina that the municipality plans to expand in the near future. The place can also be perceived as a meeting point for three different areas where clear differences in income and education can be seen. The nearby train station also makes the place easily accessible for the rest of the municipality. As a result, Gröndalsviken has great potential for a public building where training in boat building is also offered. However, Gröndalsviken is also an area where the water level will rise in the near future due to climate change. I wanted to take this change into account in the project by placing the building a little higher up on a concrete slab, which then also becomes a large public space for the entire municipality. In the project, it was important to me to maintain sight lines and create movement through the building to emphasize the public nature of the space. As a result, the building consists of several volumes that open both to the water and inland.

<p> Metal contamination from anthropogenic activities is of great concern due to the associated detrimental effects on ecosystem health. An increase in metal concentrations in the dissolved phase creates greater ecosystem impacts. Thus, the relative extent of metal distribution between sediment and dissolved compartments, and an understanding of the factors that control this partitioning is key to assessing metal impacts. In this thesis, metal concentrations were determined for a suite of 12 metals (Cr, Mn, Co, Cu, Sn, Ag, As, Ni, Zn, Cd, Se and Fe) associated with three compartments, dissolved, surficial bed sediment and suspended particulate matter (SPM) in Hamilton Harbour, Ontario. Due to highly dynamic interactions of anthropogenic impacts that may work together to affect metal distributions as well as processes that occur over small or rapid scales, a high-resolution temporal and spatial scale was used to evaluate these metal distributions over a seasonal timeframe. </p> <p> Concentrations of metals amongst sediment fractions indicated that sediment metal uptake was largely controlled by the concentration of the sediment associated amorphous and crystalline oxyhydroxide fractions accounting for up to 90% of total sediment bound metal, even though the oxyhydroxides only accounted for a maximum of 23% of the total sediment mass for both surficial bed sediment and SPM compartments. The formation and dissolution of amorphous oxyhydroxides is commonly a microbially mediated process. Thus, these results underscore the important role of oxyhydroxides and the microbial processes that contribute to their formation and dissolution m controlling metal dynamics, and likely metal impacts in Hamilton Harbour. </p> <p> Metal partitioning was found to be both spatially and temporally variable for all compartments, temporally ranging 0.5 to 4 orders of magnitude for a given element; indicating highly dynamic metal exchanges between sediment and solution compartments and fluctuating distributions over the time and spatial scales examined. </p> <p> The suite of variables that are considered to control metal distribution between dissolved and sediment compartments, and thus impact metal toxicity (i.e., temperature, pH, specific conductivity, oxidation-reduction potential, dissolved organic carbon concentration, SPM concentration (for SPM associated metals only), fraction concentrations i.e. g carbonate /g solid, g amorphous oxyhydroxide I g solid, etc., and dissolved metal concentrations) did not constrain the variability in observed metal distribution behaviour, indicating that other factors in this system, such as hydrodynamic disturbances associated with shipping traffic and channelized water currents, as well as specific point source metal discharges, may play a larger role in determining metal partitioning in Hamilton Harbour, compared to less anthropogenically, impacted systems. Furthermore, no one master variable defming metal partitioning between the dissolved and sediment compartments was found, rather relationships controlling metal distribution behavior were site, compartment, sediment fraction and element specific highlighting the challenges for the development of a Harbour-wide management plan for priority metal contaminants. The results presented in this thesis, show that it is necessary to consider metal, site and compartment specific conditions as well as fully addressing temporal variability in metal behaviour. In addition, the results of this thesis point to the need to address hydrodynamic disturbance and point source influences on metal behaviour in Hamilton Harbour and likely extend to other multi-impacted metal contaminated systems. </p> / Thesis / Master of Science (MSc)