Fiskvägar kan anläggas i anslutning till dammar för att överkomma de hinder som dammarna utgör mot migrerande fisk. En av de mest önskvärda lösningar som finns för detta är att anlägga naturlika fiskvägar, vilka har som syfte att efterlikna ett naturligt vattendrag. Ofta har dock dessa planerats för dåligt med avseende på exempelvis lutning och placering av ingången för att de ska kunna fungera riktigt effektivt. På grund av detta finns det behov av omfattande studier av topografi och kartering av området innan en fiskväg anläggs.I det här arbetet används topografin och de geografiska förutsättningarna för att studera möjliga sträckningar på en naturlik fiskväg förbi Strömdalens kraftverk i Gävle som en del av det fiskvandringsprojekt som Länsstyrelsen Gävleborg driver. I arbetet byggs en höjdmodell upp med hjälp av data från LiDAR (Light Detection and Ranging) och genom topografisk mätning, där mätpunkter från Global Navigation Satellite System (GNSS) och Totalstation används för att korrigera LiDAR-modellen över visst område.

SammanfattningDenna uppsats utreder sambandet mellan privatiseringsreform av vattendistribution och det teoretiska begreppet ojämlikhetsfällan. En ojämlikhetsfälla är ett tillstånd av relativ brist på tillgångar och möjligheter, skapat och bevarat av en snedvriden institutionell miljö. Vår frågeställning är huruvida ojämlikhetsfällan som fenomen består efter en genomgripande privatiseringsreform. Det fall som vi undersöker är Buenos Aires, som 1993 genomförde världens hittills största vattenkoncession. Koncessionen annullerades 2006, sjutton år i förtid.

Increased interest in nature tourism may be what saves small and dying villages, like Borgsjo? in the county of Va?sterbotten in northern Sweden, from disappearing. The nearly untouched nature in these areas is in many cases an unused resource, since true wildlife experiences are sought by many travelers. The purpose with this report is to investigate if Borgsjo? has the potential and abilities to become a destination for nature tourists, and how this should be done to avoid negative effects on nature, wildlife and culture.

Turbot (Psetta maxima) and flounder (Platichthys flesus) are two species of flatfish both having their nursery areas around the shores of Gotland in the Baltic Sea. The common brown shrimp (Crangon crangon) is a known predator on newly settled plaice (Pleuronectes platessa) in the North Sea area and is also found in the Baltic Sea. Experiments were carried out to see if the brown shrimp is predating on juvenile turbot and flounder, and if so on which sizes, and if the brown shrimp prefers any of the flatfish species, and also to see if there is a difference between day and night in density of the shrimp, i.e. when the fish might be subjected to predation. The results showed that predation decreased with size for both turbot and flounder.

Organic rearing of broilers is not a large production in Sweden. In order to create a sustainable yet efficient production of organically produced poultry meat, at a price that the consumers are willing to pay, much more knowledge is needed. It is therefore important to do more research on organic broilers under Swedish conditions. This report is aimed to be a base for further studies. In the study 2000 broilers of the hybrid Ross 308 divided in to two equal groups. The broiler hybrids that are used in Sweden are selected for a high growth rate and are normally slaughtered at the age of 5 to 6 weeks, with a slaughter weight of 1.7-2 kg.

This work is a GIS study of fishing rights distribution between different categories of ownersand properties in the Stockholm Archipelago. The purpose was to create basic data used toestablish fishing laws and restrictions within the Stockholm County.Stockholm?s archipelago consists of a unique environment and is the natural life andreproduction environment for ? of Sweden?s reproducing fish species. The increasingpressure from fishing, tourism and weekend population increases the need for an efficientfishing administration to prevent impoverishment and to ensure the biological diversity inSwedish fishing waters. There is an increasing need to review fishing administrationmethodologies, as well as studying the categories of ownership and properties located insensitive areas and areas influenced by physical disturbances in order to establish effectivelaws and restrictions.The Swedish fishing rights for an area are currently not connected to the ownership of theproperty to which it belongs.

Mussel meal is a potential source of protein, with a good composition of amino acids, for laying hens and broiler chickens, and may replace the use of fish meal in organic poultry production. Lead and cadmium are heavy metals which occur in the environment and can be accumulated in mussels. When poultry are exposed to heavy metals, the metals are absorbed in the small intestine and distributed in the body in the form of ions, complexes or bound to proteins. In poultry, lead accumulates in bone tissue, liver and kidneys, while cadmium accumulates in liver and kidneys. Generally very low concentrations of these heavy metals occur in muscles of broilers which have been exposed to feed contaminated with cadmium or lead.

Återskapade våtmarker är av stor vikt för den biologiska mångfalden och särskilt viktiga för hotade simfåglar. För att öka kunskapen kring hur faktorer som våtmarkers area, ålder och fiskförekomst påverkar simfåglar i återskapade våtmarker studerades fyra våtmarker i Tinnerö naturreservat, Linköpings kommun. Av speciellt intresse var svarthakedoppingen (Podiceps auritus). Antalet svarthakedoppingar i de studerade våtmarkerna hade en positiv utveckling under våtmarkernas första år. Dock minskade antalet svarthakedoppingar i området mellan år 2009 och 2011.

This report focuses on the upper slit. The upper slit is located between the impeller andthe drive unit. The slit design depends on pump type and application. However it isuncertain why the design varies, The purpose of this report is to clarify why the designvaries and to recommend an improved slit design.A research has been done; information was gathered from interviews, but also fromsearching of databases and studies of drawings, reports and documents. The originalpurpose of the slit was to prevent twining around the driveshaft, and prevent dirt fromentering the cooling system.

In an effort to evaluate the effects of restorations of float ways on population density of stream dwelling fish in relation to the changes in habitat, I studied the physical habitat restored and channalized sites and their population density of brown trout (Salmo trutta L.) in three streams in the municipality of Sorsele. The differences between the channalized and the restored sites where most noticeable regarding substrate which where generally coarser in the restored sites. The analyses showed that the proportion of habitat that where suitable to the age class 0+ where significantly lower in the restored sites compared to the channalized sites. Regarding age class ?2+, no statistical differences in habitat quality were found.

Den svenska planprocessens effektivitet är ett problematiskt och omdiskuterat ämne. Uppsatsen behandlar effektivisering av den fysiska planeringsprocessen med leanteoretiska begrepp som utgångspunkt. På senare tid har flera alternativa lösningar för effektivisering uppkommit. En av dessa lösningar är lean, en verksamhetsstrategi med ursprung från Toyotas produktionsfilosofi. Uppsatsen utgår ifrån en kvalitativ forskningsmetod med målet att genom intervjuer, offentliga rapporter och litteratur granska den svenska planeringsprocessen och fenomenet lean inom fysisk planering.

This paper aims to examine the heteronormativity that is present in John Galsworthy?s The Forsyte Saga. This is achieved by performing a queer reading of the text with the help of Swedish Queer theorists Fanny Ambjörnsson and Tiina Rosenberg. I study the norm and how it is enforced by law, society and family. To get a complete image of the heteronormativity I also need to analyze the gender presented in the saga.

The aim of this master thesis was to examine a possible connection between chromatin functions and the DNA damage repair system, with the imprinted IGF2/H19 locus as a bait. Interactions can occur within and between chromosomes and it has been shown that H19 ICR on both alleles can communicate with alleles on other chromosomes. The methylation-sensitive insulator protein CTCF is bound on the maternal H19 ICR and acts as an insulator by blocking the IGF2 promoter to access its enhancers. This is possible by formation of loop structures by CTCF that enables intra and inter-chromosomal interactions. CTCF is poly(ADP-ribosyl)ated by PARP-1 when it is bound to H19 ICR.

Denna kvalitativa studie bygger på intervjuer med sex svensklärare vid tre olika gymnasieskolor. Genom att göra parintervjuer med lärarna har jag undersökt hur de tolkar skrivningarna om kulturarv och kulturell mångfald i läroplanen, Lpf94. Jag har även frågat hur de anser att deras undervisning påverkas av dessa ord i läroplanen.Orden kulturarv och kulturell mångfald är inte definierade i Lpf94. Lärarnas svar visar på hur denna brist på konkretisering av innehållet skapar viss osäkerhet men också speglar den bredd av tolkningar som det kan ge upphov till. Denna svårighet att definiera och ge utrymmer för en bredd i tolkningen är något som tidigare forskning också har påtalat.Resultatet visar att dessa sex lärare är väl medvetna om det dubbla uppdraget, att förmedla kulturarvet och att ha en kulturell mångfald i undervisningen.

Stormwater run-off from surfaces such as roads or rooftops is often polluted with heavy metals and nutrients. Many of these substances can cause great damage in biota if they end up in the recipient. In Sweden constructed wetlands and ponds for treatment of stormwater are frequently used, since research has shown that these treatment ponds are reducing stormwater pollution considerably to a low cost. The knowledge of these pollutant removal mechanisms and how follow-up and assessment of the ponds should be performed is still limited.To determine the pollutant removal efficiency of the stormwater ponds it is recommended that flow-weighted water samples are collected from both the inflow and the outflow of the pond. This method demands considerable resources of time and money for installations and analysis.