Membrane bioreactors (MBR) combined with biological phosphorous treatment (Bio-P) has been investigated if that could be an alternative to the future expansion with conventional active sludge treatment at Lundåkra wastewater treatment plant (WWTP) in the proximity of Landskrona, Sweden.The results showed that the surface demand in the biological treatment will be reduced with 67% with the MBR-alternative compared to a conventional activated sludge process. The nutrient removal in the MBR-solution was decreased or unchanged for nitrogen-, phosphorous- and organic parameters. However, the energy demand will increase with an estimated cost of approximately 1 million SEK annually. Moreover, the extra chemical consumption is estimated to cost 370 000 SEK annually.The disturbances caused by filamentous bacteria such as sludge dispersal could be resolved with MBR-technology because the membranes are not affected by these organisms. The Bio-P process combined with MBR-technology works if the wastewater recirculates from the membranes to an aerobic zone.In the proposal, there will be a new pre-treatment step, for instance hole screens.

Logistics planning for a construction site is usually limited by traffic flow to and from the workplace. The geographical location of the construction site is determined by roads around the workplace and opportunities for well-functioning logistics. Inventory of material is often impossible because of the frequently small workspaces. As a result, a concern relating material handling remains . Even before the establishment of a construction site, it is required in the construction industry to eliminate errors that might arise in the planning stage.

In 2013 a new emission standard for heavy trucks was introduced and hence a number of new parts was brought in to Scania CV AB. This created a need for modifications in the silencers flow. The flow is highly complex involving several suppliers, call off methods and different models of silencers. The aim for this project was to improve the existing silencers flow. The flow, from supplier to assembling, has therefore been mapped.

During the transportation of logging residues (LR) the material´s low density is a problem that results in low use of pay-load capacity. Comminution or compression of LR are possible methods to increase pay-loads. In the present thesis studied a bundling machine which was mounted on a truck chassis, and the subsequent transport and crushing. The truck bundler created bundles that were larger and longer than other bundling equipment on the market. The objectives were to determine the total time consumption and its allocation over work element and machinery, to measure dry matter (DM) content of green and brown LR-bundles.

Beslutet om att bygga Uppsala Konsert och Kongress har varit ett omdebatterat ämne i Uppsala där kritik har framförts mot bland annat de kalkyler som varit en del av beslutsunderlaget till investeringen. Kritiker uttryckte att om beslutsfattarna hade fått en mer rättvisande bild av intäkterna och kostnaderna, hade beslutet om att uppföra byggnaden aldrig gått igenom. Att det fanns frågetecken kring kalkylerna bekräftades av en kort genomgång av dem, då det visade sig att stora poster i den inte hade specificerats.Med bakgrund av detta är syftet att svara på frågorna på vilket sätt kalkylunderlaget för driftsverksamheten varit bristfälligt samt vad som kan ha legat bakom detta. Materialet som använts för att svara på frågorna har varit en intervju med personen som varit ansvarig för kalkylerna samt dokumenten som haft anknytning till investeringskalkylerna, i form av rapporter och verksamhetsbeskrivningar, som varit en del av beslutsunderlaget.Slutsatsen är att kalkylunderlaget för driftsverksamheten, som presenterades inför beslutet om att bygga Uppsala Konsert och Kongress, har varit bristfälligt på flera punkter och att detta kan ha påverkats av flera faktorer såsom personliga intressen och förväntningar. Detta innebar i sin tur att beslutet om att bygga Uppsala Konsert och Kongress kom att fattas på ofullständiga grunder..

Iron deficiency is one of the most frequent micronutrient deficiencies around the world. Low iron bioavailability simultaneously with a high iron requirement is a high risk factor for developing iron deficiency. Probiotics are microorganisms that confer a health benefit on the host. Prebiotics are oligosaccharides which provide a health benefit on the host due to a positive modulation of the microflora in the gut. The aim of this paper is to evaluate if there is a connection between pro-and/or prebiotics and iron bioavailability.

Quality can be defined as the ability of a business to satisfy their customers? needs and expectations. Total Quality Management is defined as the way to prevent, appraise and improve the entire organization to increase the product quality. In order to systematically increase quality in an organization, there are different quality systems in use. One example is process management, which is to divide the activities of processes.

As a company it is required to work with strategies to minimize costs such as packaging and logistic costs. The increased market of industrial produced wooden buildings results that the time and the cost which the packaging of prefabricated building elements consume, is experienced to be in greater need of development than before and demands a better solution. The aim with this dissertation was to discover how the development of the handling of the packaging can improve the packaging process. The goal was to present improvement proposals for a simplified and thereby a more efficient production in time and cost perspective.The packaging process which includes packaging, handling, storage and transport were studied. Interviews were made with participants from the market for manufacturers of wooden houses and a case study was made at the company A-hus.

Ett led i den svenska miljöpolitiken har varit att främja en ökad återvinning av avfall, vilket gjort att en mer konsekvent lagstiftning utbrett sig, exempelvis genom producentansvaret som infördes i mitten på 1990-talet. Tanken är att det som tidigare setts som avfall ska omvandlas till resurser istället för att det ska gå till förbränning eller deponering. Syftet med denna studie är att, med hjälp av en samhällsekonomisk kalkyl, undersöka ifall de tre behandlingsmetoderna: återvinning, förbränning och deponering kännetecknas av kostnadseffektivitet. I kalkylen läggs en stor vikt bland annat på de externa kostnaderna, det vill säga hur hushållens fritid samt miljökostnader bör värderas. Den metod som används för att göra den samhällsekonomiska värderingen bygger på en modell som är framtagen av Radetzki [1999] och som enligt Pearce och Helm [2003] är den korrekta metodologin att använda.

The last decades the populations of wild boar (Sus scrofa) has increased rapidly over the species? entire European range, including Sweden. This is followed by increasing human-wildlife conflicts as a result of the wild boar foraging behavior, causing damage to agricultural crop fields due to trampling and feeding. To be able to minimize damage we need more knowledge of where in the fields the risk of damage is high and what features in the landscape that affect this risk. I analyzed damage distribution in relation to the distance to six different landscape features; forest, road, ditch, building, game field and bait station, in the study area, the Island Mörkö in eastern central Sweden.

The thesis aims to compare differentpiping materials in heating systems interms of cost as well as to illustratethe impact of energy characteristics ofdifferent materials over its servicelife. The methods used for costcalculations regarding piping are alsoto be examined to highlight thedifferences between template basedcalculations and more carefully executedones. The work is delimited to discusspipes of steel, copper, plastics andcomposites. The aim is that the resultcan be compiled to illustrate the prosand cons of various materials whenevaluating investments.The main object of the survey is part ofa heating system in the office-block KVSommaren located in southern Stockholm.The configured piping system is designedwith the mentioned piping materials andis used to make up the data for flow andcost calculations. The differentmaterials are calculated in both aconventional manner with a supplementarycost for additional fittings and with amore accurate quantification of thecomponents.

Flexible working conditions is used extensively in organizations today as a way tocreate flexibility for the employer. Recently we?ve been reading in the newspapersthat this approach is a growing problem and the EU has warned Sweden twice thatabuse of these forms of employment must be stopped. The Government has recentlysubmitted a proposed rule change to reduce the possibility of stacking one temporarycontract after another. Borlänge kommun makes themselves more flexible with theintermittent employments.

A manufacturing machine at the engineering company Sandvik Coromant has a positioning table which task is to move an item linearly. The positioning table has a linear motor capable of high velocity and acceleration. This makes it possible to achieve short cycle times and a more profitable production.The purpose of this thesis is to bring forward a new concept which is more adapted to the requirements of the positioning table. The reason is that the current positioning table provides an unnecessarily positioning accuracy of 0.01 mm, while the requirement for the positioning accuracy is just 0.1 mm. The goal is to reduce manufacturing and component costs.To develop a suitable solution an approach for the concept development process has been performed.

Background: The construction industry is Sweden?s single most important industry branch with a significant influence on Sweden?s wealth. The political restrictions that once controlled the industry are today almost gone. This combined with an unbalanced supply and demand situation on the Swedish constructions market, caused by urbanisation, has led to increased pressure on the Swedish construction companies who now are forced to find new methods in their struggle to contain or increase their competitive advantage. Purpose: The purpose of this thesis is to survey: which strategic variables are of great importance in today?s Swedish construction industry with focus on the four main actors, JM, NCC, PEAB and Skanska.

The aim of this two year master thesis is to analyze how digital preservation is presented as a problem in the Swedish national strategy for the digitization and digital preservation of the Swedish cultural heritage. In order to study which assumptions about digital preservation exists within the strategy I apply the discourse oriented methodological tools presented by Carol Lee Bacchi, which focuses on discerning what problem or, rather, representation of a problem exists within a specific policy. This study is a post-structuralist discourse analysis. The main focus of the study is on what assumptions and prerequisites the dominating representation of the problem is based upon and how the representation has evolved. The main material of the study consists of public investigations conducted by the Swedish state, governmental propositions and replies as well as other public documents upon which Bacci's methodological tools are applied.Results show that digital preservation is primarily interpreted as a financial problem as the national strategy and its surrounding documents stress the need of cost-efficient solutions.