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3772 Uppsatser om Fuel change-over - Sida 10 av 252

Uttag av energisortiment vid gallring av contorta, ett komplement till konventionell gallring? :

A recommendation for stand treatment of lodgepole pine (Pinus contorta) is, in a scientific point of view, lacking when it comes to harvesting for biomass energy. Within the next decades it is expected that 280 000 hectares of lodgepole pine will have reached thinning age on the domains of Svenska Cellulosa Aktiebolaget (SCA). Due to this the interest has grown rapidly for studying the possibilities of harvesting biofuel assortments already in the first thinning. In this study the distribution of the biomass within lodgepole pine trees has been studied and taken into account for estimating the proportions of harvested assortments when using different methods of thinning. The methods studied were conventional biofuel-harvesting (with delimbed branches gathered separately from the round wood) and thinning with cutting of round wood and long tops (incl.

Pellets - en framtidsmarknad?

With higher prices for oil and increased focus on fossil fuels impact on the environment the heating sector are searching for alternative fuels. Pellets are a quite new product whose production has risen exponential in recent years. Today there are small-, medium-and large-scale users, where the large-scale consumers are the heating sector. The heating sector is mainly using oil to cover the increased demand during cold periods. The purpose of this study is to analyze the potential of pellets if it would replace thermal power plants oil and coal. The study will also analyze the economic impact a conversion would mean for a heating plant and if the pellet is a reasonable substitute. 2008 statistics from the Swedish district heating association were analyzed and a calculation was performed to determine how many tons of pellets is needed to replace coal and oil.

Den främsta förändringen i vardagsarbetet: en studie av bibliotekariers syn på förändring och stabilitet i arbetet

The main purpose of this Master?s thesis is to examine what librarians in seven public libraries experience as major change in their work tasks. We are also interested in exploring how these changes influence librarians? ways of working. In addition to this we want to explore if librarians have experienced change in relation to user?s expectations and demands and if so, how they are met.

Outsourcing- vilka faktorer påverkar intressenternas förväntningar? En studie om ett förändringsarbete mellan flera intressenter i ett outsourcing sammanhang

The complex, ever growing and changing environment, requires that today's organizations are dynamic and willing to change in order to stand competitive.This awareness has made change number one priority in almost all organizations' agenda.We live in a world that is constantly changing, yet many organizations fail to change successfully. When a change occurs in complex environments with multiple stakeholders, it immediately increases the complexity and the challenges of the change process.A complex situation may arise when, for example, partial outsourcing of the corporate information system infrastructure. Two of the most difficult challenges that organizations face today is to conduct a successful change process and managing the effect of a change, such as arising expectations. It is very common for change in an organization not to achieve the desired result or that they even fail. There may be a lot of reasons for these failures.

På spaning efter den psykoterapeutiska förändringsprocessen

The aim of this study was to examine what factors experienced psychotherapists emphasize as central and change developing in psychotherapy. The intention was to highlight the therapists' personal thoughts and experiences of psychotherapeutic change. By personal interviews with three cognitive and three psychodynamic psychotherapists, data was retrieved and then analysed with a qualitative phenomenological and hermeneutical approach. The study revealed great accordance between the psychotherapists regarding the importance of therapeutic relationship, factors connected to therapeutic treatment and flexibility regarding to the method of treatment. Moreover, it has been revealed that psychotherapeutic change in both treatments of psychotherapy is due to integration between emotional and cognitive processes.

Påverkan av skogsbrand på litiska arkeologiska fynd ? experimentell simulering av brand

This is a paper about the effects from smoldering fire on lithic objects from an archaeological view. The introduction gives the background to this paper, a short orientation to forest wildfires and why the work is limited to: flint, quartz, quartzite and slate. Material and methods describes the stone materials and the setup that was used in the temperature logged tests with three replications for each type of material. The fuel in the burnings was peat on a bottom of sand. Flint showed a more drastic effect from heat compared with the other materials. Slate seems to have greater tendencies to change to darker colour and luster at lower temperatures than the other materials.

Tidsåtgång i system med självgående/självlastande fullfoderblandare :

In this study I have compared two systems of handling TMR, self-propelled/ self loading mixers and conventional towed mixers, what has been investigated is the time for filling, mixing and feeding TMR as well as maintenance and fuel consumption. The background of this study is the structural rationalization within the Swedish milk production that has put focus on efficiency and reducing of costs. Forage and labour are the two biggest costs in milk production today. The study has been performed by visiting three farms and with a stopwatch measured the times for filling, mixing and feeding TMR. At the time for the visits, the users have been interviewed regarding maintenance and fuel consumption. They have also had an opportunity to give comments of how they experience the mixers. The result of the study after processing is that the average stock in the study can save 74000 SEK a year by reducing time for filling, mixing and feeding TMR to cows with a self propelled/ self loading mixer . The conclusion I can make of this study is that it?s not the size of the stock that decides whether it?s interesting to invest in a self propelled/ self loading mixer, but the presumptions on the farms, for instance forage logistics and mechanical equipment..

Motstånd till förändring

The aim of this study is to compare attitudes to change among innovation and economics students and teachers at one of the universities in Sweden.Data about students? and teachers? attitudes to change was gathered using a survey.Keeping in mind that knowledge can lower ones resistance this study is based on a hypothesis that individuals from the innovations program have a lower resistance to change. The study is also based on earlier research in regards to comparisons between students and teachers.The results of the study show that teachers have less resistance to change than students. Individuals in the innovation program are however less resistant to change than individuals in the economics program.One can discuss whether or not results of the study show that the hypothesis is correct.The difference between individuals in the economics- and the innovation program are statistically significant and has moderate effects in reality. The differences between teachers and students are statistically significant but only have a small effect.It is however a starting-point for future studies that will possibly explore the subject more profoundly..

Inramning av klimatförändringar : I svensk dagspress 2012 och bland unga vuxna

Something that all people have come across and more or less experienced is climate change. Climate change in itself is a very complex problem since there are no borders between countries that can stop the problem. The link between science and the public is largely in the hands of the media, since the media play an important role in defining environmental issues and to inform the public about research findings. In recent years, reports from the media showed a slightly skeptical and uncertain picture of this problem. This is despite the largely prevailing consensus among climate scientists that there is an anthropogenic climate change.

Med alliansen som utgångspunkt ? Behandlingspersonal och ungdomar om positiva förändringsfaktorer för ungdomar inom institutionsvården

The practice of residential treatment of youth has been up for debate for quite some time. The debate regarding institutional care has voiced concerns regarding the lack of follow-up and evaluation of treatment and its efficacy. It is especially important with additional research on residential treatment conducted from the perspective of those being treated, as well as the treatment providers. This study aims to add to this field of research. The study is based on two empirical studies conducted through qualitative interviews.

Motstånd vid förändring av ekonomisystem - utifrån institutionell teori

The purpose of this study is, on the basis of institutional theory, to contribute with moreunderstanding about resistance to management accounting change and also to survey reasonsfor the resistance and how to cope with the resistance.The study is a qualitative case study and semi-structured interviews have been used tocomplement the study?s theoretical area, consisting of scientific articles.The conclusion from the study is that resistance to management accounting change can beunderstood and explained by the institutions of each organisation and its underlying structures. Afurther conclusion is, with the structures in mind there are many reasons for resistance and alsomany ways to cope with the resistance. A model has been produced in purpose to createunderstanding and to survey the resistance to management accounting change..

Klimatanpassning och lantbruket i Värmland : Klimatförändringarnas upplevda effekter på lantbruket och olika aktörers åsikter om klimatanpassning

Climate change is a global and slow process that affects humans all over the world. Climate adaption within agriculture is important to reduce the risks that agricultures are exposed to because of climate change.  Through climate adaption you can improve the positive effects and take advantage of them optimally. How the climate change affects agricultures varies depending on regions and societies. The purposes of the study are to examine how different actors experience the impacts of climate change on the agriculture in Värmland.

Den tredje våldtäkten : En narrativ analys av fyra friande våldtäktsdomar

The purpose of this study was to create an environment that stimulates children?s communication via language in a preschool called ?The Flower?. The environment should encourage and challenge the children to interact and communicate more with each other. That in turn will further the children?s language acquisition.

Språkutvecklande miljöer i förskolan : En studie om hur barn tillägnar sig språket genom ökat samspel

The purpose of this study was to create an environment that stimulates children?s communication via language in a preschool called ?The Flower?. The environment should encourage and challenge the children to interact and communicate more with each other. That in turn will further the children?s language acquisition.

Diesel Dubbelbränsle Teknologi

The work covered in this report includes a literature study of the diesel dual fuel technology(hereinafter referred to as DDF). The literature study covers earlier work that has been doneregarding the use of compressed natural gas (CNG) and diesel in a DDF system. Moreover a onecylinder research diesel engine was fitted with a CNG fuel system for experimental testing. Theinstallation of the engine and the test cell is described. Results from the tests are presentedcovering emissions, heat release and pressure traces from the DDF-concept.During the literature study it was found that most research was related to heavy duty dieselengines.

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