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3983 Uppsatser om Electrical distribution systems - Sida 57 av 266
Grovfoder för dikor
This literature review examines different forages which are well suited for suckle cow production in Sweden today. They should also be possible to cultivate in Sweden under the current circumstances. Crops suitable for grazing in Swedish climate but not used in Sweden today, but which may be relevant for Swedish conditions are also mentioned. In Sweden today, mainly grass silage, straw and hay are used as forage, but also wholecrop silage is used to some extent. However, concentrates are not used to a greater extent, since it contains too much energy.
Akut mikrocystinförgiftning hos däggdjur
Förgiftningar hos däggdjur som druckit vatten kontaminerat med cyanotoxiner har observerats världen över, och riskerar att öka i takt med tilltagande övergödning och klimatförändringar. Denna litteraturstudie inriktar sig på mikrocystin (MC) som är det vanligaste och mest studerade cyanotoxinet. Studien avgränsar sig till akut intoxikation hos däggdjur och fokuserar på grundläggande mekanismer hos toxinet, såsom absorption, distribution, metabolism och elimination. Vidare beskrivs de toxiska mekanismerna och de akuta toxiska effekterna.
MC orsakar utbredda nekroser och blödningar i levern. Den specifika distributionen till levern anses bero på det höga uttrycket av organiska anjontransportörer (OATP).
Termisk hantering av litium-jon- batterier i elektriska drivsystem
The automotive market is currently undergoing a historical change where stricter emission legislations and ever increasing fuel costs have intensified the search for effective alternatives to the conventional internal combustion engine, which has resulted in a substantial trend towards electrification of powertrains. Storage of electrical energy is the fundamental component in this technology where the lithium-ion batteries are currently considered as the most appropriate solution. Lithium-ion batteries, however, as other types of batteries, can only be used efficiently and durably within a specific temperature range.This Master thesis has been carried out in collaboration with Electroengine in Sweden AB, situated in Uppsala, which has an ongoing project regarding development of a modular battery system for electric powertrains. The project is at a stage where an initial prototype has been developed which provides the foundation for this thesis. The study has addressed the battery system performance from a thermal perspective, in order to validate the ability of the system to create a thermally serviceable environment for the lithium-ion battery cells.
Interaktiv marknadsföring och Internet : ? En studie utifrån Radi Medical Systems webbplats för kundutbildning
AbstractTitle: Interactive marketing and Internet - A study of Radi Medical Systems? educational site (Interaktiv marknadsföring och Internet - En studie utifrån Radi Medical Systems webbplats för kundutbildning)Number of pages: 43 (including enclosures 47)Author: Daniel PalmgrenTutor: Mats LindCourse: Media and Communication Studies CPeriod: Spring 2008University: Division of Media and Communication, Department of Information Science, Uppsala UniversityPurpose/Aim: The aim of this thesis is to examine if Radi Medical Systems? educational site has the potential to create value for the company?s customers, and by that promote improved customer relations. Questions asked are: What kinds of visions does the company have for the site? Which services are offered to the customers through the site? How do the customers experience these sInervices?Material/Method: Information from interviews with representatives from Radi Medical Systems and their customers, observations of the webpage and information from an internal Radi document concerning the educational site has been collected and analyzed through the use of a theoretical framework, in order to provide an understanding for the questions asked. The visions were discussed and analyzed by general concepts of interactive marketing and Internet.
Packning i tid och rum : Korologisk förändring och strategier att hantera trängsel i handelsträdgården, bostadsområdet och på begravningsplatsen
The study Packning i tid och rum (Crowding in Time and Space) is a Master Thesis in Human Geography within Geography, presented at Södertörn University College.The aim is to investigate the connections between time and space, more particularly, geographical changes over time. This is done by focusing on the Study of Land use as a phenomenon and on-going processes in demarcated areas. Distinct areas are given special interest, i.e. how they are used. The study deals with three different kinds of sites in three levels of scale: a market garden, cemeteries and a residential area.The main focus of the study is on the cemeteries.
Legacy systems: hur kan organisationer förhålla sig till föråldrade system?
Tanken bakom examensarbetet var att undersöka huruvida de äldre system som finns i bruk ute i organisationer idag uppfattas som ett problem samt vad som i sådana fall görs åt problemet. Ett flertal författare har under åren förklarat hur förändringar i system leder till en försämrad struktur vilket förr eller senare orsakar ett försvårat underhållsarbete av system. För att ta reda på hur väl litteraturen stämmer överrens med svenska organisationer så har vi intervjuat fyra respondenter för att få deras syn på problematiken. Denna har sedan jämförts och diskuterats mot de premisser vi funnit i litteraturen. Det har framkommit att det litteraturen inom området menar, stämmer till stor del med det våra respondenter berättat.
Data Propagation and Self-Configuring Directory Services in a Distributed Environment
The Swedish field of digital X-ray imaging has since several years relied heavily on distributed information systems and digital storage containers. To ensure accurate and safe radiological reporting, Swedish software-firm eCare AB delivers a system called Feedback?the first and only quality assurance IT support product of its kind. This thesis covers several aspects of the design and implementation of future versions of this software platform. The focus lies on distributed directory services and models for secure and robust data propagation in TCP/IP networks.
Beskrivning av systemfunktioner i kärnkraftverk med hjälp av objektorienterat modelleringsverktyg
In order to facilitate design and maintenance of such a large and complex site as a nuclear power plant, all system functions must be described in a stringent way. In the past, these descriptions consisted of text documents and logical diagrams, but today there are an increasing number of object-oriented programs available on the market which might be used for this purpose. This Master Thesis has made a closer study of one of these programs named Rational Rose. The principal of the program is to facilitate software design and development, not to create models of plants. However, using the program the same way as developing software, specifying actors then gradually extend the model with use cases, use cases diagrams etc, the same methods can be used when modelling plants.
Uppvärmningssystem : Ekonomi, miljö och drift
This bachelor thesis aims at investigate how a specified house can optimize its energy consumption.Today the house often stands for the major part of the energy consumption in a consumers? life,whereas an energy optimization creates economic as well as environmental advantages. It is importantto make old houses more energy efficient, but putting high energy demands on new houses could beargued to be more important. The installations functions as both the heart and brain in a house, thusmaking it important to energy optimize these. Since the background describes the importance ofenergy efficiency and optimization in a house, the focus area of this report will be an investigation ofdifferent types of heating systems in order to be able to choose the one most suited for the house.Aspects considered when choosing the heating system was how economic the system is both inservice- and investment costs and how environmental and operational friendly the system is.Through literature reviews there were sufficient information gathered that served as a foundation whencomparing and choosing between the four systems - district heating, pellet-fired boiler, geothermalheating and solar heating.
Energieffektivisering på Skutskärs Bruk : Varvtalsstyrning till utvalda pumpenheter på Blekeri 4
In modern society in terms of economics and environmental impact, it is important to ensure that a company is as energy efficient as possible to reduce the amount of energy used. About 10 TWh of electricity used annually to pump drives in Swedish industry. Therefore, pumping system has great potential for energy savings.The objective of this report was to determine how much energy and money that can be saved with the insertion of variable speed drive to six pumps on Bleach plant 4 in Skutskär Mill. The work was performed with electrical measurements during one week, analysis of pump curves and the compilation of production data over a year.The results show that four of these six pumps were profitable and yielded an annual saving of 1172 MWh of electricity and 560 000 SEK. With an economic lifetime of 10 years and a discount rate of 6.8% the final result for the entire life-cycle savings became 3 355 000 SEK.
Mänskliga rättigheter vid en naturkatastrof : En jämförelse mellan Haiti och Thailand
There are three main purposes for this thesis; the first is to distinguish the possible violations that can occur in time of natural disasters. The second is to analyze if there is a correlation between political systems and how the effected country handles the aftermath of a natural disaster. The third purpose is to determine the role of the global community and what responsibility lies with them. The issue is often that the aid becomes the main object for discussion and analysis, but the focus rarely shifts to the effected State. Therefore the focus in this essay is the political system and how they cope with the human rights violations that can occur in a time of natural disaster.
Videodistribution och -konsumtion på mobiltelefoner
This report is the result of a master thesis carried out by the author, student at the Royal Instituteof Technology(KTH). The task was performed as a product development process at a companycalled Ameibo AB, located in Stockholm. It is the final task of the studies at the Master'sprogramme Design and Product Realization. The report is structured in a chronological order anddescribes the methods used, the implementation of these methods and a presentation of theresults given from these studies.Ameibo is a company located in Stockholm, distributing films on the internet. The aim of thismaster thesis was to investigate the possibilities of entering the market for portable devices.
Teknik för en flerskiktadwebbapplikation
The report analyses if some common problems can be avoided by using modern technology. As a reference system ?Fartygsrapporteringssystemet? is used. It is an n-tier web application built with modern technology at time, 2003-2004. The aim is to examine whether ASP.Net MVC, Windows Communication Foundation, Workflow Foundation and SQL Server 2005 Service Broker can be used to create an n-tier web application which also communicate with other systems and facilitate automated testing.
En uppföljning av floran i Enköpings vattenpark : kan anlagda våtmarker med vattenrening som huvudsyfte bidra till naturvård och biologisk mångfald?
Wetlands are important ecosystems and form habitat for both common and threatened species. In Sweden, as well in many other places on earth, there is a lack of wetlands. There is an expressed will to adjust this lack through restoration of wetlands with reduced function and through construction of new wetlands. Follow-ups and evaluations are important steps to optimize these actions. The wetland Vattenparken was constructed 1999 ? 2000 for treatment of surface water.
Barn söker i bibliotek ? en kunskapsöversikt
The aim of this thesis is to investigate new knowledge about how children search for library material and which strategies they use, and if the latest research gives any answers whether we should adapt systems and services or teach information seeking in a better way. In this thesis knowledge is understood as research publications but also results from projects in library practise, and studies concerning children 6 to 18 years old are included. The method used is a knowledge survey. We have gathered and evaluated documentation from different sources like citation and reference databases within the field of library and information science. The result implicates that there are, both in old and new documentation, three main search strategies children use in their search for information in a library context; they browse, they search in library catalogues and they use some sort of reference service.