Sök:

Sökresultat:

85 Uppsatser om Spot - Sida 2 av 6

Bärbara datorer, en möjlig källa för nickel- och koboltexponering av hud? : Direktvisande tester för nickel och kobolt på bärbara datorer och frisättningsförsök på en bärbar dator

Background: Since1994, the EU NickelDirective is limiting the release of nickel from objects that are in prolongedcontact with skin. Despite this, nickel is still the most common cause of contactallergy in industrialized countries. This could implicate that other productswith short contact to the skin, which are not restricted by EU´s legislation inREACH (Registration, Evaluation, Authorisation and Restriction of Chemicalsubstances), could be a source of nickel or cobalt exposure. There is no limitfor cobalt release within REACH. To determine if there is cobalt or nickelpresent on the surface of a material and if metal can be released in contactwith the skin, there are quantitative and qualitative methods, such as the DMG(dimethylglyoxime)-test, the cobalt Spot-test and a method for releasedetermination according to EN1811.Objectives: Laptops are not included in the REACH legislation.

Efficient hedging in an illiquid market

Vattenfall hedge its future electricity production in order to decrease fluctuations in theresult. Hedging can in a simplified way be described as selling the future electricity deliveriesin long-term contracts so that the future price of the delivery becomes fixed. The contractsused are electricity forwards traded at the Nordic electricity market Nord Pool. Animbalance between buyers and sellers can lead to a situation where the forward price notequals the expected Spot price. The difference between the forward price and the expectedSpot price is referred to as the market risk premium.

Dimensionering av industrilager för biobränsle :

The aim of this study was to develop a simple model for calculating stock costs for bio fuel at Billerud Karlsborg and subsequently recommending a suitable stock level of bio fuel. The stock components considered in the model are GROT (branches and tops), bark, dry wood chips, raw wood chips from barking and sawdust. The calculations are based on a probability distribution of historical deviations between ordered and delivered volumes. The model presents two different ways to manage the supply in case of irregular deliveries. The first way is to stock enough volume to cover the deviations and the second way is to compensate with a quick purchase from the Spot market (at extra high purchase prices).

Markberedningens, planteringspunktens och behållardjupets inflytande på granminiplantors etablering i fält :

A new type of forest tree seedling, called mini seedling, has been developed by the University of Dalarna in Garpenberg, Sweden. Compared to traditional containerized seedlings that are grown for 1 ? 2 years, mini seedlings are grown for only 10 weeks. The mini seedlings are small, easily planted, cost effective, and reduce the amount of chemicals used in the nursery. Research has shown that mini seedlings tend to have higher overall survival rates than traditional container seedlings.

Är valutamarknader effektiva? : En kointegrationsanalys av spot- och forwardkurser

Enligt den effektiva marknadshypotesen (EMH), utvecklad av Fama på 1960-talet, skall priset på en finansiell tillgång reflektera all tillgänglig information på marknaden. Effektiviteten kan delas in i svag, mellansvag och stark form. Syftet med vår uppsats är att analysera huruvida ett antal växelkurser är effektiva i svag form, det vill säga att priset på en växelkurs reflekterar all historisk prisinformation. Vår studie omfattar tio länder, samtliga med rörliga växelkursregimer. Vi använder oss av kointegrationstest samt test för förväntningsriktighet för att kunna verifiera EMH.

Magnesiumintagets betydelse för blodtryck och magnesiumkoncentrationen i stickprov av urin, träck och blodplasma hos häst

The purpose of this trial was to evaluate the possibility to use sampling of faeces, urine and plasma, and measurements of blood pressure as methods of discovering hypomagnesemia in horses, as well as the application handiness of these methods. The most commonly used method of checking the magnesium status of a horse is to analyze samples of serum or plasma. The trial was of a switch-back design, in which the horses were used as their own controls. The animal material was five Swedish warm blooded trotters between six to ten years old, and weighing between 485-620 kg. The trial consisted of three periods that were two months each.

Tillämpning av olika fjärranalysmetoder för urvalsförfarandet av ungskogsbestånd inom den enkla älgbetesinventeringen (ÄBIN)

Den enkla älgbetesinventeringen (ÄBIN) är en metod att skatta vinterstammens påverkan på ungskogarna. Tillsammans med modellberäkningar av fodertillgångens utveckling bör denna information utgöra ett gott underlag för beslut om en för flera parter acceptabel populationsnivå, vilket kan ligga till grund för lämplig avskjutning några år framåt. Projektets mål har varit att undersöka fjärranalysmetoder som eventuellt kan förenkla urvalsprocessen av ungskogsbestånd inom ÄBIN-rutoma. Idag identifieras och markeras alla bestånd där den aritmetiska medelhöjden på huvudstamm arna kan vara mellan en och fyra meter. I detta projekt har olika fjärranalysmetoders lämplighet att identifiera ungskog testats.

Specificering av produktionstransformatorer : Rekommenderade avsteg från IEC 60076 för att vid upphandling beskriva en robust enhet

As break downs of production transformers are costly and often result in long outages it is essential for reliability of operation that the transformers are manufactured to be robust. The aim of this M.Sc. thesis is to investigate if deviations should be made from the standard IEC 60076 ? Power Transformers in order to describe a robust large power transformer for procurement.The investigation has been conducted in three stages. In the first stage a definition of the term robust was developed in consultation with the client Vattenfall Vattenkraft.

Smittsamma hudsjukdomar hos hund :

This student report is about canine infectious skin diseases. It is primarily directed at veterinary assistans. The report includes a description of the skin?s structure and immunologic defences. The four types of allergic reactions are described. Different diagnostic techniques are also accounted for. The skin diseases included in the report are: fleas, lice, Sarcoptes scabiei, ringworm, Cheyletiella and leishmaniosis.

Turbinkretspump system - Kraftvärmeverket i Borås

The Rya power plant in Borås produces district heating, district cooling and electricity. The plant is owned by Borås Energi och Miljö AB and is run by Dalkia Facility Management AB.In order to get the best heat exchange from the district hot water a pair of twin pumps and a turbine circuit pump are used as return pumps. Turbine circuit pumps are used to increase the pressure through the heat exchangers at the power plant. The pumps are in use when the flow is over 2 000 m3 h-1 and during the summer when re-cooling is used to improve the effectivens of the heat boilers.Since the pumps, that are parallel connected, rotating at a fixed rate per minute, the pressure is regulated with regulating valves. This report shows that during the 4,300 hours that the pumps where in use, energy corresponding to 590 MWh was wasted.

Och nu blir det reklamfilm : En kvalitativ innehållsanalys av de sju svenska politiska reklamfilmerna inför EU-valet 2009

Och nu blir det reklamfilm - En kvalitativ innehållsanalys av de sju svenska politiska reklamfilmerna inför EU-valet 2009Seminar date: 2010-01-14Department: Media- and Communication scienceReport category: Degree project undergraduate levelAuthors: Johan Heikensten and Elin LarssonAdvisor: Kristoffer HoltPurpose: When TV4 for the first time offered advertising time to the Swedish political parties for the upcoming election of the European Parliament in 2009, a huge debate broke loose in the media. Regardless of opinions on the matter, we find it safe to say that political television commercials will have a great influence on future election campaigns in Sweden. Hence, we find it of great interest and importance to examine these seven commercials in order to look for tendencies, strategies and trends within the material. Theories: The theory chapter includes Communication, Political communication, Videostyle, Commercial strategies, Rhetoric and Semiotics. Methodology: The survey is based upon two qualitative analyses, a rhetorical analysis and a semiotic analysis.

BUCO - avlastning och förvaring av småprylar i hallen

The goal has been to design a product for unloading and storing small gadgetsin the hallway. The aim has been to facilitate the search for importantsmall objects that people never seem to find when they need them the most.The aim has also been to provide a sense of relief when people enter theirhome, and they can empty their pockets on one Spot in a very simple yet orderlymanner. The product would be able to sort out, and make the gadgetsaccessible, take as little space as possible, be easy to use and not be perceivedas heavy and clumsy. The work has been done with close involvement of afocus group consisting of 20 people of different ages and with different occupations.The behavior of the focus group has been observed and test modelshave played a crucial role in advancing the work troughout the project. Theresult is a series of storage products for the wall, of simple shapes which canbe combined together in different ways depending on hallway and the user?sindividual taste or preference..

Jag litar på dig - Är våra läroböcker att lita på?

The purpose of the study is to se how coherent certain parts of four textbooks is with the curriculums Lpo 94 and Lgr 80. The study will examine Christianity and Islam in four textbooks. The aforementioned books are high school textbooks. To help us conduct the study we will use Hellspongs qualitative analysis method that?s allows us to conduct a profound analysis.

Lysande belysning? En komparativ sutdie mellan belysningsmöjligheter och rekommendationer

One part of preventive conservation is controlling the lighting in the exhibitions. As a first step we have to accept the fact that the very act of displaying objects is causing them damage, and because the trend is for everything to be open to the public view all the time, the aim is to minimize light exposure of exhibits.This essay will present lighting options and relate them to the current recommendations. I have put the emphasis upon describing which methods one can use to minimize the degradation of exhibits on display by eliminating UV- and IR-radiation and reducing the visible light. The intention with this essay is to investigate the current lighting options and compare these to the recommendations on lighting exhibitions.The selections of different lighting options such as LED-, halogen- and energysaving lamps were made based on avaibility. Thereafter I did two types of investigations.

Svikna löften? : Fem unga män på en anstalt i Sverige och deras upplevelse av sin egen skolgång.

This study is about inmates, who reflect upon their time in school, their experiences of school and how different things have influenced and affect them later in life. The aim with this study is to examine how different kinds of school related issues have affected the inmates in different ways. The aim is also to look at how school can Spot in early years, children within the danger zone and provide for those children, so that they can be helped in different ways and so that they can be able to achieve different in life, not to end up becoming criminals later in life.The main questions in this study are:How did the chosen inmates experience their time in school?Can you by looking at research tell that these persons already in their childhood were children within the danger zone?What kind of school related issues could have contributed to a criminal lifestyle later in life?The result of this study shows that all five have been children within the danger zone. In all five cases there have been school related issues that have affected those men.

<- Föregående sida 2 Nästa sida ->