This thesis aims at determining the heat losses in a property vent stack and its roof valve. Upon request of a company, the vent stack is analysed for possible heat recovering solutions to be implemented, while relining of the drain system is executed and with a suitable payback time for the economic investments. The heat loss calculations are based on data for properties that are located in the Stockholm region, but also easy to change depending on the situation. The calculations are done on pipes made out of cast iron, which still is the most common type of drain pipe in Sweden, and these are the pipes that relining is usually made on. The calculations that needed to take several variables into account have been done in MatlabR2014a and the thermos dynamical properties that were used in those calculations have been extracted from EES.Three different types of heat losses in the vent stack have been taken into consideration in this thesis.

Genom konstruktion och tillverkning av prototyper samt med hjälp av ljud- och flödesmätningar av dessa, tillsammans med standardmodellen, har vi lyckats förbättra flödet genom ventilen Al-db 450, producerad av Fresh AB i Gemla. För ljudmätningar har en testrigg konstruerats och tillverkats..

This Master?s Thesis work was performed at the Studio Engineer department at Volvo CarsDesign Centre in Gothenburg, Sweden. The assignment has been to create a new idea of an airvent where the news value mainly was focused at functionality but also with great attention onvisual appearance.The work has been totally independent and not been aimed to any specific car model. Theindependency initially made that the visual appearance primary wasn?t limited in any way dueto surrounding components.

This study investigated whether in-situ audiometry, delivered via hearing aids, is a better option as a basis forprescribing hearing aid amplification, compared to conventional audiometry. By examining the real ear insertgain (REIG) in 29 ears (18 subjects), that had been fitted with a hearing aid programmed using both conventionalaudiometry and in-situ audiometry, the study looked at whether in-situ audiometry based prescription is closer tothe NAL NL1's fitting target than audiogram based prescription. The hearing aid Siemens Pure 7mi with speakerunit M was used on all participants. The results showed how in-situ audiometry based gain at certain frequenciesis more consistent with the target curve, especially at 1000, 1500, 2000 and 4000 Hz. It was not establishedwhether the findings of the study were statistically significant.

Syftet med detta examensarbete var att utveckla en GC-metod för analys av etylenglykoler i förorenade vattenprover, exempelvis industriavloppsvatten. Detta skulle åstadkommas med en GC-FID och MMI (Multimode Inlet), samt helst utan provupparbetning. Ett annat av målen var att kunna kvantifiera inom området 1 ppm till 100 ppm, och att metoden skulle vara tillräckligt stabil för att kunna ackreditera den.Ett flertal kolonner testades, där en HP-5 med dimensionerna 30 m*0,53 mm*0,88 ?m från Agilent var den som gav bäst resultat. Även två olika liners provades, dels en med glasull och dels en 2 mm dimpled liner, där dimpled linern gav bäst resultat, och minst ?carry-over? mellan analyserna.

Background: The abortion issue raises many ethical, moral and religious aspectsand is therefore well debated worldwide. In the care for an abortion seeking woman, it isimportant that the nurse find a balance between her and the woman's moral opinions aboutabortion in the quest to achieve good care.Aim: The aim of this study was to describe nurses? experiences of caring for womenundergoing abortion.Methods: Literature review based on ten original articles.Results: Literature review's results highlights two key themes: nurse?s experience of anemotional roller coaster as well as difficulties and challenging experiences at work inabortion care. These two themes consists of three subthemes: to get support in the workthrough to vent thoughts and feelings, how strain and stress affects the nurse's work and as anurse learn to accept the woman?s choice.Discussions: Within abortion care nurses find it difficult dealing with theemotional roller coaster that can occur while they strive to maintain an ethical andprofessional approach.

The EU Council adopted in 2007, environmental and energy goals with the aim of them must be met by 2050. This, in combination with those of the Swedish government 15 enacted environmental goals is supposed to lead the way for the Swedish environmental work.This report has examined measures in properties in the Swedish Cooperative Housing Society (SKB) stocks.The report discusses a range of measures that might be appropriate to apply on the properties to make them more energy efficient.One of the measures discussed, the vent whose primary purpose is to create a good indoor environment for the residents but is also where the most energy is lost.Another measure discussed is insulation of the building envelope on the estate to make it more energy efficient. To put extra insulation on the building envelope is important because of the large amount of energy that is lost through the walls, ceilings and floors.Future actions that may be implemented is individual billing of heating and hot water. This system has been used in European countries since the 70's and today the EU wants to increase the own individuals control over their electricity costs. This has led to a discussion whether to implement the system in Sweden or not.However, there are a number of equitable measures to be sorted out before the system can be used in any great scale.Finally, it is important to remember that environmental measures should be the primary and the pursuit of cost reductions the secondary otherwise you risk the environmental work to be counterproductive..

Syftet med detta examensarbete är att undersöka hur några pedagoger i olika skolor uppfattar sin professionalitet när det gäller att samtala med föräldrar och elever vid eventuella samtal som upplevs som svåra. I vår studie har vi intervjuat sex stycken pedagoger på tre olika skolor i Stockholms län. De pedagoger vi valt att intervjua är en rektor, en specialpedagog, en kurator och tre lärare i de lägre åldrarna. Vi kommer förutom dessa sex pedagoger även genomföra en försöksintervju med en lärare. Studien utgår från ett interaktionistiskt perspektiv och bygger på teorier från Vygotskij, Bronfenbrenner och Mead.