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905 Uppsatser om Phase shift - Sida 46 av 61

Det energisnåla isoleringsmaterialet

This bachelor essay is divided into two parts, the first being a construction of a single-familyhouse and the second an in-depth study of five different isolation materials, analysed from anenergy perspective.The first part, the construction of the single-family house, has been created from knowledgeacquired during three years of studying at KTH Royal institute of Technology in Stockholm, inthe program Architecture and the Built Environment. The constructed house is a one-floorhouse of 137m2with façade plaster, situated in Borlänge, Sweden. The house has a wooden framewhich is built on a on sight cast concrete foundation, on the ground. The house?s roof is a gableroof, which has an angle of 24 degrees.

Framtagning av ett förlängningsbart bord

This report covers the product development of a new type of extendable table for the company Karl Andersson och Söner. The company wants to expand their product collection with a new product. Karl Andersson och Söner is a well-known family company that has been located in Huskvarna since 1898, and they are producing furniture for private- and the public environment.The aim with this project is that the product should lead to increased sales, as well as expand their collection to appeal a wider audience. The work is permeated by two issues, to achieve as good results as possible. The issues will bring up how to make a table better, in terms of the competitor?s options, and how to apply a design process to develop a table that meets the markets needs and requirements.The design process of the work consists of strategically picked parts from three separate design processes.

Common misconceptions about everyday astronomy-related phenomena among students in the 9th grade

Students of all ages host a wide variety of scientifically inaccurate ideas and conceptions about everyday astronomical phenomena, such as the seasons, the moon phases, and gravity. The field of Astronomy Education Research has over the last decade experienced an accelerating growth, although the majority of studies have been conducted in the USA. In this work, the 9th grade students of a typical Swedish school were surveyed by means of a questionnaire in order to probe their conceptual understanding of several key concepts in astronomy. In the end, the number of respondents amassed to a total of 90. The results were analyzed with a constructivist approach in light of conceptual change theory and phenomenological primitives.

Potentiella armeringsfel inom byggproduktionen : En generell studie

Reinforcement is of great importance to fulfill the dimensioned strength of a concrete construction. This requires that the work needs to be carried out with adequate results that neither endangers the workers or the safety of the construction. Progressive development of the planning phase, construction documents, and construction methods is in constant need since the technology constantly evolves.In order for contractors to be able to get acceptances from their quotations requires that they have to increase their working pace in order to be able to leave a quotation with a lower price than the competition.Due to the increasing pace the different parts involved in the construction process is subjected to time pressure. The design stage, construction documents, work preparation and the execution are all affected when everything has to be finished quickly. To avoid problems, it is required that all parts are able to deliver good quality solutions and results under the influences of time pressure, which is not always easy.

"Förlåt dem Fader, för de vet icke vad de gör" : En religionspsykologisk studie av sista uttalanden på Texas Death Row

The United States is one of few Western nations that administers capital punishment to their condemned criminals. Texas has executed the most inmates of any state in the U.S. This prompted questions about the psychological characteristics of death row inmates. The purpose of this essay is to widen the perspective on inmates serving capital sentences by analyzing their final statements. The focus of this essay was centered on acute anxiety of death among inmates, visible in their final statements, as a result of an accelerated process of dying.

Stormskador i lärk och gran : en jämförelse efter stormen Gudrun

The storm Gudrun January 8-9 2005 felled about 70 millions cubic metres forest in southern Sweden. The majority of the wind damaged forest was spruce (Picea abies). In order to decrease the risk of wind damages in the future other trees species are of interest for forestry in southern Sweden. The purpose of this master thesis was to study if larch were more wind tolerant than spruce. The method was to compare larch, Japanese larch (Larix kaempferi Lamb.), European larch (L.

Innovativ utmatningsteknik : Mediumstor bulkförvaringslösning

This master thesis was done for a company called BRUKS which is active in woodprocessing,bio-energy and bulk material handling industry. The idea for the master thesis wasto develop a new reclaiming method for silos where wood chips are being stored. A mediumsegment of between 1000 ? 5000 m3was defined as the segment with the most sales potential.Two different concepts were produced, one for new constructions and one for rebuildingalready existing silos.In the beginning of the master thesis a lot of time was spent on visiting different BRUKSoffices and customers to get an overview of the industry and the product. This informationwas the basis when the idea generating phase began.

Basel II och fastighetsbranschen - en scenariostudie av de nya kapitaltäckningsreglernas konsekvenser för fastighetsbranschen

Banks carry a great responsibility when it comes to the financial systems in our society. Disturbance in the credit system affects both lender and borrower. All financial institutions must therefore carefully estimate their risk exposure. This assessment enables them to cover themselves from losses with appropriate capital buffers as main guardian. In order to prevent bank crises and also to maintain financial stability in general, new regulations concerning analysis and preventive actions were introduced on the 1st of February 2007.

Relation för livet. En studie om ensamkommande asylsökande barn

The aim of this study was to describe and to analyze needs and social efforts concerning unaccompanied/separated asylum-seeking children. The responsibility for the reception of this target group was transferred on July 1, 2006 from the Swedish Migration Board to the municipalities that sign an agreement with the Swedish Migration Board. Eight qualitative interviews were carried out with representatives for transit-residents and assigned municipalities in Skåne. Our main questions were: How has the reception of unaccompanied/separated asylum-seeking children been planned, how do the municipalities and the transit-residents consider their needs and what is the level of qualifications and competence within the municipalities in order to work with unaccompanied/separated asylum-seeking children on the basis of social efforts? We chose to clarify our findings on the basis of the attachment theory, which is applicable during the critical emancipation phase that the vast majority of the unaccompanied/separated asylum-seeking children find themselves in.

Användning av rötrest från kombinerad etanol och biogasproduktion : en jämförelse mellan tre alternativ

Scandinavian Biogas is involved in the planning of a combined ethanol and biogas factory in Karlskoga, Sweden. Besides biogas and ethanol large amounts of digester residues will be produced, about 450 000 liquid tonnes residue (~7,3 % Dry Substance( DS)). The objective of this thesis was to investigate possible uses of the residue from the biogas production process ScandgasEthanol developed by Scandinavian Biogas, and to derive a methodological approach how to evaluate and compare handling systems. Three systems where proposed and compared in this thesis; spreading of the untreated residue as fertilizer (system 1), dewatering to a higher DS content to reduce transportation before spreading as fertilizer (system 2) and production of a solid fuel by dewatering and drying the residue (system 3). The general conditions for the proposed systems were investigated in terms of practical viability, economical aspects, environmental impact and energy inputs/outputs.

Produktion av Pyrolysolja från kvistrejekt

Fast pyrolysis is a method for converting biomass into three energy rich products: char, gas and bio-oil, where the latter is most interesting.  Pyrolysis is an endothermic process where biomass is heated in an anaerobic environment and, with the right operating conditions, up to 80 %wt bio-oil can be extracted. Key parameters for fast pyrolysis are: stable reactor temperature (~500°C), short residue time for gas in the reactor (<2 s) and a very high heating rate for the biomass. Today there are several different process solutions for fast pyrolysis, where fluidized beds and rotating cones are most developed. Bio-oil has compared to fossil oil: lower heating value, low pH and also polymerizes with time. Because of this upgrading is desirable for increasing competitiveness.

Age Management : En studie av olika organisationers förmåga att nyttja kompetens i alla åldrar

Vi lever längre, är friskare och både kan och vill jobba längre. Företagen och organisationer står inför ett ökande kompetensbehov. Vi inledde denna studie med tro och övertygelse om att en del av företagen skulle kunna utnyttja äldre medarbetare för att täcka en del av sina kompetens- och resursbehov. Vi önskade identifiera en del av de möjligheter och problem företag eller organisationer har och visa på goda exempel som fler företag eller organisationer skulle kunna ha glädje av.Vi har i studien tagit del av statistik, teori och praktiska exempel från olika företag som beskrivits på olika sätt i rapporter och artiklar. Vi har genom att intervjua tio (10) olika företag och organisationer funnit att det faktiskt förekommer ett mer utbrett Age Management arbete än vad vi hade föreställt oss, arbetsgivare ser allt mer till kompetens hos en person och allt mindre till ålder.Vi har funnit att ålder förstärks genom attityder, att "bli gammal" upptäcks inte automatiskt av en enskild person, ofta är det omgivning, arbetskamrater eller erbjudanden om seniorboenden vid 55 år som gör en person uppmärksam på att denne nu betraktas som "äldre".

Att planera för social hållbarhet i ekobyar :

This essay gives the reader an overview of the different problems and issues a landscape architect might meet, in the process of planning and realizing an eco-village. Its aim is to stimulate new ideas, based on the traditional, present and future working field of landscape architects. The essay does not claim to cover all imaginable aspects of social sustainability within an eco- village, but refers to the presented sources for further in-depth reading. Although the original focus has been on physical planning, the interviewees? words have been of big importance, and to a certain extent changed the constitution of this essay.

Development of a method for determination of pesticide residues in honey using liquid chromatography tandem mass spectrometry

Honey is a product that may contain pesticide residues due to contamination from bees pollinating various plants as well as elimination of vermin inside the hive. Different methods are needed for analysis of pesticides, since the term includes a wide range of different substances. National Food Administration lacks a validated method for determination and quantification of pesticides in honey using liquid chromatography tandem mass spectrometry, LC-MS/MS. The technique is especially important in analysis of polar and non-volatile pesticides, where gas chromatography is not functioning optimally. After investigating what pesticides could be found in honey produced in Sweden, a number of four pesticides suitable for analysis with LC-MS/MS was compiled; boscalid, impidacloprid, tau-fluvalinate and thiacloprid.

Faror i varor : En studie av unga vuxnas medvetenhet om kemikalier i hygienprodukter och kosmetika

Chemicals are everywhere in todays society, in humans, animals as well as nature, and they are difficult to avoid. The chemical industry is regarded to be the fastest growing industrial sector, accounting for ten percent of the global economy. A large amount of chemicals are used to produce hygiene products and cosmetics, products that in Sweden only are consumed in quantities of 110 tons per day. Researchers find it increasingly difficult to determine which chemicals that are dangerous and which that are safe, and how they might affect us in the long run. Correlations have been found between chemicals, diseases and other health effects such as cancer, allergies, reproductive and endocrine disorders.

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