Stockholm's fish market is a vibrant market and restaurant located on the waterfront in the Old Town of Stockholm. The structure is divided into two distinct volumes that are designed for their functions. The starting point for the project "Stockholm's fish market" was to develop a market for those who are on the site today. After numerous site analysis, I concluded that today's visitors can be divided into three categories; Rapid, semi-fast and slow. It is to them, "Stockholm's fish market" is designed for. The building is placed closer to the edge of the dock than the previous house. This is to create a more intimate rooms next to the water and to provide a lively place and create the square formation to the old town. By shaping the building in the form of two raktangulära volumes melts "Stockholm's fish market" well into the urban space. The facade is of slate, which creates a rustic feel, like the surrounding buildings. The slates properties also creates a play of light in the facade that can be reminded of fish scales. "Stockholm's fish market" is a place that is for planned and spontaneous visit to one of Stockholm's most important sites.

Detta kandidatarbete har sin placering på Skeppsbron/Skeppsbrokajen i centrala Stockholm. Inriktningen jag valde var att rita ett förslag för en fiskmarknad som skulle placeras på denna plats. Mitt arbete har fått inspireras av Sveriges största och mest kända fiskmarknad, Feskekörkan, i Göteborg. Analyser av Feskekörkan som organisation och dess planlösning har i mitt arbete lett till en tektoniskt uppbyggd struktur där material byggnadskonstruktion var viktiga element. Med bland annat en fiskfjällsfasad i mässing och en bärande skelett av storskaliga limträbalkar. Platsen som byggnaden ligger på är ett välbesökt promenadstråk med en bred och lång kajkant som används flitigt av såväl, turister som besöker gamla stan och det kungliga slottet, och Stockholmare som tar sig mellan Södermalm och Norrmalm. Jag har valt att bebygga platsen på ett sätt som både tar vara på det vackra promenadstråket men också ger möjlighet för besökande att stanna upp och ta del av fiskmarknaden. / This candidate's work has its placement on Skeppsbron/Skeppsbrokajen in the central area of Stockholm. The focus I chose was to draw a proposal for a fishmarket that would be placed at this location. My work has been inspired by the largest and most famous fish market in Sweden, Feskekörkan, in Gothenburg. Analyses of Feskekörkan’s organization and its plan has, in my work, led to a tectonically constructed structure where building materials were important elements. Including a fish scale facade made of brass and a bearing skeleton of large glulam beams. The place which the building is situated on a popular promenade with a broad and long quay which is widely used by both, tourists visiting the Old Town and the Royal Palace, and the Stockholm citizens who ride between Södermalm and Norrmalm. I have chosen to build on the site in a way that both takes advantage of the beautiful promenade but also provides the opportunity for visitors to stop and take some of the fish market.

The expansion of the Swedish hydro power has contributed positively to the reduction of the environmental impacts from the fossil fueled power production. In the same time the extensive expansion has been proved to cause negative ecological and local environment impacts of a stream. This, in turn, has been affecting the biodiversity and fish stock negatively, which has been reduced. One of the underlying problems is the lack of possibility for the fish to pass the plants, but it is also directly correlated to the mortality rate of the fish passing through the turbine, which this study is investigating. The mortality rate has been computed for three different locations in Sweden, Untra, Tännfallet and a third one whose location is confidential, and is denoted as Case 1, 2 and 3. The model used to calculate the mortality rate in this investigation is based by existing blade strike models and knowledge and are investigating the death due to mechanical injuries from collision with a runner blade in the turbine. The model is valid for Kaplan- and Francisturbines and is taking technical design, physiological and behavioral parameters, in consideration. In the first case, Untra, the mortality rate is lower for the Kaplan turbines than for the Francis turbine that has been under investigation. However the Francis turbine has lower mortality rate at low loads and the result also indicates that a Kaplan turbine with greater diameter has lower mortality rate than a smaller one. In case 2, Tännfallet, the Kaplan turbine would give 50 % lower mortality rate than a Francis turbine with a corresponding drop and water intake and at full load. At part load the mortality rate is 42 % less. Case 1 and 2 indicates that a Kaplan turbine is more fish friendly than a Francis turbine, but Case 3, indicates the opposite. The mortality rate in the old Francis turbine was 0 % according to the calculations. This could be explained to the low relative velocity, which is partly a result of the small scale turbine. The relative velocity is in this case is well below 10 m/s and a collision with the runner blades has not necessary a deadly outcome.    In all cases the trash rack is of great importance to prevent a fish with high probability to die in the turbine to pass. In Untra a rack with a gap width of 20 mm is recommended. This would prevent 25 cm long fish and 80 cm long eels to pass. In Tännfallet the current rack that has a gap of 25 mm is considered to be sufficient and will prevent a 30 cm long fish and 90 cm long eels. In Case 3 an 18 mm wide rack is recommended and if choosing that the mortality rate in Case 3 will be at most 26 % if a fish is passing and 70 % for the eel, these with a length of 25 and 70 cm respectively. The results from the case study and the analysis indicates that the mortality rate due to fish passing through the turbine can be reduced. Partly by choosing a turbine that is more fish friendly designed, but also by using optimally designed diverters as trash racks. In general the mortality rate increases with the length of the fish and with a reduction in the turbine dimensions, but at relative velocities below 10 m/s the mortality rate are reduced. This occurs in more extent in Francis turbines, but in general the Kaplan turbine has a lower mortality rate. Also to be mentioned, there are a lot of uncertainties when calculating the mortality and the technical parameter that has the most influence to the mortality rate is the relative flow angle (runner blade angle). Another uncertainty is the behavior of the fish. For example, the mortality rate is much greater for a fish passing at the top of the impeller in a Francis turbine than one passing at the bottom. Hopefully, the knowledge given in this report will contribute to future investigations where the best possible technique to reduce the mortality of a fish passing through the turbine is to be done, and thereby promote both the environmental and economic sustainability of the hydro power.

Long-lining is a frequently used method in marine fisheries. Similarly to trawling and nets, also long-lining is associated with bycatch which may have negative impacts on the ecosystems. However, different methods of long-lining may vary in the amount and ratio of bycatch but methods have rarely been compared directly. This study investigates whether the fishing method of floated demersal longlining baited with live Pacific Anchoveta (Cetengraulis mysticetus) has a lower bycatch ratio or bycatch amount than using demersal long lines baited with filet pieces of dead fish. The study was carried out in collaboration with artisanal small-scale fishermen in the Paquera area of the Gulf of Nicoya in Costa Rica. Six efforts were made in February of 2023, and were then compared to dead bait data from the same area from 2015 and 2016 collected by Universidad Nacional de Costa Rica. This comparison showed no significant difference between the two methods in bycatch ratio but showed that live bait longlining captures significantly more total fish and bycatch per catch per unit effort (CPUE). There are also ethical issues and issues with bait fish acquirement that points against live bait fishing. However, there are certain arguments in support of the method, such as broadening the exploitation strain across more species and not hindering financially struggling artisanal fishermen further.

Som fisken i vattnet, ett projekt som tagit sin utgångspunkt i att återigen skapa liv på Skeppsbrokajen. Förhoppningen med projektet har varit att skapa en fiskmarknad som inte bara är en mötesplats utan en attraktionskraft. Från tidig morgon till sen kväll sker ett skådespel av fiskaktiviteter.   Projektnamnet Som fisken i vattnet har en historisk referens till fiskeköparnas sumpar, vilka fanns på platsen under början av 1900-talet. Marknaden har tack vare denna referens delvis placeras under befintlig kajnivå för att frigöra yta och skapa en lämplig miljö för livsmedel. Känsla av närhet till havet förtydligas genom en helglasad vägg, vilken är enda skyddet mellan Saltsjön och besökaren.   Marknaden ligger i liv med kajen precis emellan två av Gamla stans gränder. Marknadens två våningsplan är anpassade för två typer av besökare; den snabbare förbipasserande kunden samt de kunder som vill uppleva marknaden till fullo. Visionen är att besökaren ska kunna följa fiskens rörelse och process bakom glasade väggar, från det att den kommer in till marknaden till förädling och försäljning. / Baltic fish tank is a project generated with the aim to recreate vivacity at Skeppsbrokajen by adding a fish market that is not only a venue but also an attractive force within itself. From early mornings to late evenings the market will offer a scene of fishing activities.   The project name Baltic fish tank has a historical reference to the fish buyers sumps, which existed on the site during the early 1900s. The market is therefore placed under the existing quay level to free space on the embankment as well as create a suitable environment for seafood. A glass wall is the only thing separating the Baltic sea from the visitor and heightens the feeling of closeness to the ocean.   The marketplace is situated in between two of the Old Town's alleys. The floors of the building are designed for two types of visitors; the client passing by and the consumer who wants the full fish market experience. The vision is to enhance the visitors’ experience, allowing the consumer to follow the fish from the fisherman’s hand to the cold ice display out in the marketplace. The entire process including the gutting of the fish is easily followed through the glass walls adding to a full transparency.

The existence of a Fisk-type heliospheric magnetic field (HMF) is one of the most debated questions in cosmic-ray modulation. Recently, Burger and Hitge [2004] developed a divergence-free Fisk-Parker hybrid magnetic field model to demonstrate the behaviour of cosmic rays in the heliosphere due to such a field. This approach has been refined and the properties of the consequent field are investigated. It is found that randomly directed magnetic field diffusion in and above the photosphere significantly influences the solar magnetic field both at the solar poles and near the polar coronal hole boundary. The solar cycle dependence of this field is investigated, a study which is of particular importance for studies of the long-term behaviour of cosmic rays, such as those undertaken at the SANAE base in Antarctica. The amplitudes of the 26-day recurrent cosmic-ray variations are modelled as function of both latitudinal gradient and heliolatitude and are found to agree qualitatively and in some cases quantitatively with the observational results reported by Zhang 119971 and Paizis et al. 119991. Although magnetic field data do not clearly indicate the existence of the Fisk field [see, e.g., Fursyth et al., 20021, this study supports the existence of a Fisk-type HMF. / Thesis (M.Sc. (Physics))--North-West University, Potchefstroom Campus, 2006.

This study has examined how cooking affects the levels of the toxicantsaflatoxin, arsenic, lead, dioxins, cadmium, mercury, perfluorinatedcompounds and polybrominated diphenyl ethers in rice, potatoes and fish.Not every toxicant was examined for all three types of food, they were onlyexamined for those types of food where current levels of the toxicant in thattype of food are relevant from a risk assessment perspective. To determineif there is a danger of negative effects due to the exposure of thesetoxicants from food, articles from the Swedish National Food Agency andother scientific articles have been compiled. A minor experimentalsubstudy was also performed where rice bought in Uppsala was rinsed andboiled in different ways to see if that affected the residue levels of arsenic.The results of this study indicate that the levels of some toxic substancescan be lowered on a dry weight basis by cooking, and that this reduction isdependent on the cooking method used, the properties of the food andtoxin. The levels of cadmium and mercury were generally unchanged bycooking whereas the results for lead and perfluorinated compounds wereconflicting. Cooking can lover the levels of aflatoxin, arsenic, dioxins andpolybrominated diphenyl ethers on a dry weight basis. The effects ofcooking on toxicant levels should be considered when performing riskassessments, but further studies are needed to achieve a better basis for decision-making.

Through the example of students at Fisk University, a historically black university in Nashville, Tennessee, this dissertation ethnographically examines how vocality is racialized as "black" in the United States. For students at Fisk, voice serves as a mechanism of speaking and singing, and mediates ideological, discursive, embodied and affective constructions of blackness. Fisk built its legacy by cultivating and promoting a specific kind of New World blackness through vocal expression, and the indispensability of Fisk's historical legacy shapes how the university continues to promote the self-worth of its students as well as a remembrance of and recommitment to the social justice and citizenship journey of black people through the 21st century. The relationships between expressive culture, the politics of racial inequality, and higher education experiences overdetermine Fisk students' vocality in relation to blackness, in addition to students' agentive choices to express and (re)form black racial identity. This dissertation traces the differences between curricular and non-curricular vocality to foreground the ways that students resist 21st century forms of racial violence and create paths towards the world they desire. The project opens with an analysis of the role of diction in the performance practice of the Fisk Jubilee Singers®. The following chapter compares the repertoire and rehearsal style of the two primary choral ensembles at Fisk. The dissertation then explores how the neo soul genre figures in the Fisk Idol vocal competition. The concluding chapter describes students' different renditions of singing the university's alma mater, "The Gold and the Blue." These analyses of students' embodied, ritualized vocality show how Fisk students' voices performatively (re)construct blackness, gender, class, genre and institutionality.

Aquaculture is of growing importance in the global seafood production. The environmental impact of aquaculture will largely depend on the type of environment in which the aquaculture system is placed. Sometimes, due to the abiotic or biotic conditions of the seascape, certain aquaculture systems tend to be placed within or near specific ecosystems, a phenomenon that in this thesis is referred to as aquaculture system - ecosystem links. The exposed ecosystems can be more or less sensitive to the system specific impacts. Some links are known to be widespread and especially hazardous for the subjected ecosystem such as the one between the shrimp aquaculture and the mangrove forest ecosystem. The aim of this thesis was to identify and investigate causes and consequences of other spatial links between aquaculture and ecosystems in the tropical seascape. Two different aquaculture system - ecosystem links were identified by using high resolution satellite maps and coastal habitat maps; the link between sea cage aquaculture and coral reefs, and the one between seaweed farms and seagrass beds. This was followed by interviews with the sea cage- and seaweed farmers to find the drivers behind the farm site selection. Many seaweed farmers actively choose to establish their farms on sea grass beds but sea cage farmers did not consider coral reefs when choosing location for their farms. The investigated environmental consequences of the spatial link between sea cage aquaculture and coral reefs were considerable both on the local coral reef structure, and coral associated bacterial community. Furthermore, coral reef associated fish are used as seedlings and feed on the farms, which likely alter the coral food web and lower the ecosystem resilience. Unregulated use of last resort antibiotics in both fish- and lobster farms were also found to be a wide spread practice within the sea cage aquaculture system, suggesting a high risk for development of antibiotic resistant bacteria. The effects of seaweed farms on seagrass beds were not studied in this thesis but have earlier been shown to be rather substantial within the borders of the farm but less so outside the farm. Further, a nomenclature is presented to facilitate the discussion about production system - ecosystem links, which may also be used to be able to incorporate the landscape level within eco-certifying schemes or environmental risk assessments. Finally - increased awareness of the mechanisms that link specific aquaculture to specific habitats, would improve management practices and increase sustainability of an important and still growing food producing sector - the marine aquaculture. / <p>At the time of the doctoral defense, the following papers were unpublished and had a status as follows: Paper 2: Manuscript. Paper 3: Manuscript. Paper 4: Manuscript.</p>

Thesis (M.Sc. (Physics))--North-West University, Potchefstroom Campus, 2008.