Local differentiation may occur during a short period of time and is part of the formation of new species. The isopod Asellus aquaticus is an example of a species in which local adaptation has occurred during a short period of time. An establishment of stonewort (Chara spp.) vegetation in Lake Tåkern (in the 2000) resulted in two different Asellus ecotypes; a lighter pigmented, smaller one that lives among stoneworts grazing periphytic algae, and a darker, larger ecotype that feeds on decaying leaves in reed (Phragmites australis vegetation. The purpose of this study was to examine whether there are differences in growth between ecotypes, depending on whether the food was periphytic algae or leaves, and to study the choice of substrates between the two food types. For the study, animals from both habitats were brought in from Lake Tåkern to the laboratory.

Bioethanol is one alternative energy fuel that can be produced from different types of biomass. Second generation bioethanol comes from fermentation of lignocellulosic material and can be seen as a more environmental friendly alternative as e.g. forest residues and agricultural by-products are used. To be able to use lignocellulosic biomass in ethanol production, it has to be subjected to different treatments first. In this study, aspen sawdust was used as lignocellulosic material.

BACKGROUND: Today?s societal changes, including high rate of change and increasing information flows, are increasing the demand on the individual mental capacity. It becomes increasingly difficult to analytically process all the different dilemmas and everyday decisions as individuals have a limited mental capacity available to make these decisions. Thus, it has been suggested that ego-depleted relies more heavily on intuition, which is less burdensome, when making decision. However little is known about to what extent intuitive decisions differ from analytic.

This paper aims to investigate how human beings uses food to found an identity, with regards to how social class affects their choice of food and if trends play a part when it comes to cooking and purchasing food. The paper applies theorist Pierre Bourdieu's concepts such as habitus, capital and field.The main part of the material is composed of four interviews with seven informants; all of which is middle class. The paper also looks at how lifestyle, taste and attitudes to consumption are used when the informants build identity. The empirical part is split into three main subjects, where I first seek to find each informants food habits. What do they eat, and what do they not eat?It showed that a large part was due to their varied lifestyles, however generally speaking the day to day meals should be quick while meals during the weekends could take longer and also cost more.

The aim with the present study was to investigate whether there is a difference between the course participants who find their way to the dog-school respective the Swedish Working Dog Association. The study have focused on four issues; why the course participants have chosen the dog-school respectively the Swedish Working Dog Association, why the participants bought their dog, if the participants are satisfied with their dogs and if it is more likely that they turn to the dog-school?s than to the Swedish Working Dog Association with their first dog? Course participants from two dog-schools and from two of the local clubs belonging to the Swedish Working Dog Association in Skaraborg, Sweden, answered a questionnaire. In total 85 answers were collected, including 60 from the course participants from Swedish Working Dog Associations and 25 from the dog school?s course.

On today?s competitive market, it is difficult to achieve profitability trough high prices on manufactured products. Profitability must be obtained through low manufacturing costs, high quality and short lead times. One of the companies on the market is Sandvik Coromant, manufacturer of tools and chips for metal cutting. This master thesis investigates the methods of manufacturing for boring bars at the manufacturing unit GVH4 at Sandvik Coromant in Gimo, Sweden.

I gymnasiets fysikkurser ingår som ett moment att eleverna ska planera, genomföra och utvärdera experiment. I dagligt tal kallas detta för ?laborationer?. Under min tid som lärare har jag vid flera tillfällen noterat att de mål man som pedagog ställt upp avseende laborationerna ofta uteblir, eller åtminstone inte uppfylls helt och hållet. Man kan tänka sig en rad orsaker till detta.

Syfte ? Studiens syfte är att undersöka hybridapplikationers prestanda i olika situationer för att ta reda på varför de upplevs som långsamma. För att uppnå syftet besvaras följande frågeställningar:Hur presterar hybridapplikationer jämfört med nativapplikationer beräkningsmässigtÄr JavaScript-biblioteken anledningen till hybridapplikationers sämre prestanda, och vilket av de bibliotek som undersöks är det mest lämpade för bästa prestanda?Kan hybridapplikationer hantera stora datamängder med IndexedDB utan att bli oresponsiva?Metod ? Studien använder sig av en experimentell forskningsmetod där hypoteser och förutsägelser formuleras och sedan testas för att besvara frågeställningarna.Resultat ? Resultatet från studien visar att prestandan för mobila hybrid-applikationer är i de flesta fall, vid utförande av samma uppgift, underlägsen den för dess motsvarande nativapplikationer. Resultaten visar även att prestandan påverkas av vilket JavaScript-bibliotek som används men att biblioteken inte är anledningen till hybridapplikationers långsamma prestanda.

Interactive media is constantly increasing in our surroundings and with the innovation of touch-screens, two-way communication with screens has become part of our daily life. Still, this well known way of process information is not often seen in the in-store environment of grocery retailing. Here, interactive media is an unestablished field where empirical studies are invisible within the academic world. The lack of knowledge in which effect interactive digital signage has is one of the barriers of investing in this marketing solution in-store. The main purpose of this study is to examine and describe the effects of interactive digital signage at shelf within grocery retailing.

This study examines whether it would be profitable for travel distributors in the charter to expand its offerings to other travel related products, and also the products that are in demand. We are also studying the role that brand has for customers' choice of travel.According to Hellman, e-commerce is to be preferred since it is competitive because it gives the travel distributors the opportunity to lower down prices. Therefore, we also investigated the proportion of respondents who would consider buying these travel-related goods through the travel distributors? websiteIn support of this study, is a survey with a population of 100 charter travellers. Respondents are divided into two groups where the first group consists of people who have booked their trip in stores, and the other via the Internet.

The background for this thesis is that at the beginnings of 1980´s the National Board of Forest started an experiment of lime dressing to reduce acidification in forest soil and in ground water. The purposes of this report are to explain organization?s, government?s and private landowners viewpoint on lime dressing and vitalization fertilization, some socio-economic aspects are presented. The general conclusions are that the majority of the interested party?s are positive to vitalization fertilization but the forests owner?s in generally need much more information about this topic..

Det har funnits problem med utmattningssprickor hos bränsletankarna på stridsfordon 90 och de beräkningar som gjorts har inte kunnat förutspå skadorna som uppkommit. Därför hade ett intresse uppkommit för att se hur vätskan påverkar strukturen vid vibrationer. Detta examensarbete har genom experiment försökt skapa en idé om hur strukturen hos en behållare påverkas vid vibrationer när vätska fylls på inuti behållaren. För att få klarhet i detta designades först ett testobjekt i I-deas för att få fram ett antal önskade modformer. Efter tillverkning utfördes prov i provavdelningens vibrationsbänk med olika vätskenivåer.

AbstractThe importance of good construction planning affects the final costs of the production and the timing of the project. Planning for building projects has been studied with the aim of identifying how three week planning appears in the construction industry today.A case study has been conducted in Navisworks Simulate to assess whether the software is suitable to connect the task schedule with the BIM model to create a 4D model. 4D models are used for performing 4D construction simulation to visualize the project. In order to use the benefits of the model, investment in equipment and software is required. This means higher costs for the companies.

By transcribing one drum solo recorded and performed by myself and another performed by Philly Jo Jones, a drummer I?ve heard and listened to through out my life, I try to find answers to the question: How much are we influenced by the music and the musicians we listen to?My experiment starts with me recording a improvised drum solo and then transcribing it. Then I found and transcribed a drumsolo by Philly Jo Jones that I had not heard before. The results of these experiments showed some interesting similarities between my own playing style and Philly Jo Jones and I learned a lot about what stuck with me from listening to him playing, and what didn?t..

Examensarbetet behandlar ämnet zinkutsläpp från biltvättar där arbetet inkluderar redogörelseför problematiken med zink i naturen samt en utarbetning av en praktiskt och ekonomisktgenomförbar metod att reducera zinkhalten i avloppsvattnet från biltvättarnas biologiskareningsverk Alaska Bio genom undersökningar och experiment med olika metoder.Litteraturstudier har gjorts för att ta reda på hur zinken rör sig och interagerar med dess miljöför att dra en slutsats om hur viktigt det är att prioritera åtgärder för problemet. Dessutom har litterära förarbeten gjorts för att ta reda på hur en pH-justering kan påverka halterna av löstzink och huruvida den komplexbildare som finns i vattnet kan påverka zinkutfällningen.Utvärdering har även gjorts av olika reningsmetoder som kan vara lämpliga att komplettera debiologiska reningsverken med och här ingår sandfilter, torvfilter, jonbytare, membranfilteroch indunstare.Arbetet kartlägger och beskriver även driften av biltvättanläggningar och deras reningsverk iSverige. Här ingår vilka olika tekniker som används, hur dessa påverkar miljön rent allmäntoch hur de kan komma att se ut i framtiden. Djupare arbete has gjorts med att beskriva denbiologiska vattenreningsanläggningen Alaska Bio och dess kemikalieanvändning.Experimentella försök har gjorts för att bestämma hur utfällningen av zink förändras medvarierande pH i tvättvattnet och slutsatsen drogs att halterna zink i jonform, som därmed ärlöst, är minimala i pH-området 8,6-9,2 och maximala vid låga pH-värden. Redan vid pH 6 varbefann sig större delen av zinken i jonform.