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761 Uppsatser om Radiation protection - Sida 19 av 51

Kartläggning av markberedning i svår terräng på SCA Skog

Due to the requirement for reduced use of insecticides and the lack of competitive mechanical plant protection, you need a scarification with good result. This is often no problem to perform in normal terrain without technical barriers. However, in difficult terrain with large number of rocks and steep slopes, the result would be worse. The purpose of the study is, that in these areas with difficult terrain, to find out the scarified areas quality, describe the non-scarified areas conditions and find out where the limit is for the use of a traditional disc trencher. Findings indicate that there are usually not the machine that is the limit, but the driver of this.

Maskinskydd på rullriktverk

ESAB is a world leader in production of welding consumables and equipment. The company manufactures, among other things, welding electrodes. A roller straightening unit is used in the cutting process to straighten the wire, which the welding electrode consists of, by adjusting some of the rollers during operation. According to ESAB?s standard and the European machinery directives, moving parts of machinery, such as rollers of the roller straightening unit, must be out of the operator?s reach.

DDoS-skydd för hemanvändare : En studie kring DDoS

Att försörja sig som streamingpersonlighet på Internet är något som vuxit explosionsartatpå senare tid. Detta leder också till att man blir ett tydligt mål för attacker. Detta arbetehar belyst den problematik som DDoS-attacker skapar när de riktas mot hemanvändare.Olika lösningar på detta problem gås igenom och analyseras. Tester har utförts för attbelysa enkelheten i attacken samt hur den påverkar hemanvändares hårdvara. Testernahar resulterat i att VPN är en kompetent lösning men innehåller även nackdelar..

Planerat kärnbränsleförvar i Forsmark : - med fokus på episyenit

It takes a very long time for ionizing radiation of used nuclear fuel toreturn to a natural background level, for this reason one of the requirements for theselection of the location of a repository was that the environment as well people'shealth would be protected from the harmful effect of radioactivity. This requirementmeans that the waste must be isolated in a geological formation. In Sweden therepository will be built in the crystalline bedrock. The location for the Swedish nuclearfuel repository at nearly 500 meters depth at Forsmark in Östhammar was decided 3June 2009. The repository will be located at Söderviken, close to the Forsmarknuclear power plant in a 1.90 billion year old bedrock that will accommodate 12,000tons of spent nuclear fuel.

Fairtrade i Karlstad : En undersökning om utbudets utveckling och karlstadsbornas upplevelse av märkningen

It takes a very long time for ionizing radiation of used nuclear fuel toreturn to a natural background level, for this reason one of the requirements for theselection of the location of a repository was that the environment as well people'shealth would be protected from the harmful effect of radioactivity. This requirementmeans that the waste must be isolated in a geological formation. In Sweden therepository will be built in the crystalline bedrock. The location for the Swedish nuclearfuel repository at nearly 500 meters depth at Forsmark in Östhammar was decided 3June 2009. The repository will be located at Söderviken, close to the Forsmarknuclear power plant in a 1.90 billion year old bedrock that will accommodate 12,000tons of spent nuclear fuel.

Kommunal samverkan mellan räddningscentral och POSOM - En fallstudie av Tsunamikatastrofen

This report is an evaluation of the cooperation between the rescue command centre and the POSOM-groups (?Psychological and social support?) after the Tsunami catastrophe in December, 2004. The report describes the interaction between these two municipal administrations, what services the rescue command centre provided and how they gathered information. Finally the author suggests different solutions to how the collaboration within these different municipal administrations can be increased and improved in future times of crisis..

Sensorfusion för undervattensrobot i kärnteknisk miljö med Kalman filtrering

WesDyne TRC AB is a fully owned subsidiary of the global WestinghouseElectric Corporation. WesDyne is a world leader in non-invasive methods for theinspection of nuclear power plants. One of the inspection platforms used to scanfor defects in and around the welds in the reactor vessel is called the T-crawler.The T-crawler operates under water in a radioactive environment by stepping onthe vessel (reactor tank) inner wall using suction cups. The environment is harshand many traditional positioning sensors are not suitable for implementation. Thisthesis investigates the possibility to use a gyroscope and a pressure sensor tocreate an alternative and independent positioning system.

Temperaturens och den fotosyntetiskt aktiva strålningens effekt på avgång och inlagring av kol på en dikad torvjord

The decomposition of organic carbon in drained peat soils is a major source of carbon di-oxide in Sweden. A big part of these drained peat soils are used in agriculture and it is a big challenge to slow down their decomposition. It has earlier been thought that less tilling and higher water table levels would decrease the activity of soil microbes and thereby the decomposition, but recent experiments has showed that this has little or no effect. In this bachelor thesis a field experiment was made on drained peat soil with ley, outside Björklinge, Uppsala municipality, Sweden. The experiment was carried out in May 2011. The objective was to develop a method to examine how the net exchange of carbon diox-ide from plant covered peat soil is affected by temperature and photosynthetically active radiation (PAR).

Filter och kapsling för IR-givare

This paper describes the work done trying to diminish the noise present in the signal from an IR-detector. The project was aiming towards two different kinds of applications; heat protection and presence detection. The hypothesis was that the signal-noise ratio would decrease if a filter and a proper installation were used for the detector. Some experiments were executed to determine what kind of filter were the most suitable for each application and how these could be installed. After executing the experiments and evaluate the results we recommend to use a specific filter for each application.

Maskinskydd på rullriktverk

ESAB is a world leader in production of welding consumables and equipment. The company manufactures, among other things, welding electrodes. A roller straightening unit is used in the cutting process to straighten the wire, which the welding electrode consists of, by adjusting some of the rollers during operation. According to ESAB?s standard and the European machinery directives, moving parts of machinery, such as rollers of the roller straightening unit, must be out of the operator?s reach.

Nollföljdsmodellering av transformator-Beräkningar av följdproblem vid ökad kablifiering på mellanspänningsnivå

Historically transformers with system earth equipment have been modeled as open circuits in zero sequence. This approximation has been satisfying, but lately it has been discovered that equipment on one side of the transformer have responded to faults that occurred at the other side. Most of these problems took place when the majority of the system on the secondary side of the transformer contained cables. These findings have led to questioning whether or not the former model of the transformer in zero sequence is correct. This report investigates if it is necessary to represent the transformer in zero sequence in another way than it is usually done today.

Tjänster av allmänt ekonomiskt intresse i EU-rätten : Om balansen mellan konkurrensintresset och andra samhällsintressen samt hur balansen påverkas av positiv och negativ integration

A group of companies that only recently has caught the attention of Swedish designers, enterprises and media are the so -called "furniture pirates". In Sweden it?s mainly two companies that have ended up in the spotlight. The online stores Ikon M and Designers Revolt are two companies which currently sell replicas of famous Swedish and foreign designers. Although the designs sold are copyright protected in Sweden, and most other European countries, the right holders can only stand by and watch as more or less exact copies are sold for a fraction of the price of the originals.The business model - to exploit the EU?s free movement of goods and the UK's short term of copyright protection in matter of mass-produced art (industrial design) - has proven successful for the companies that practice it.

Bestämning av lägsta luminans för utrymningsskyltar

This report is based upon an experimental study of exit sign luminescence in different environments. The purpose is to evaluate the lowest luminescence of an exit sign, based upon Swedish regulations. Scientific experiments have been conducted in a controlled environment, where exit sign luminescence was graded by an evaluation group. The results of these have been verified by similar experiments that took place in two department stores. The final result of the study is guidelines for appropriate exit sign luminescence in different environments..

Självupplevd oral hälsa hos patienter som strålats mot huvud- och halscancer

Syftet med studien var att belysa hur patienter som strålats mot huvud- och halscancer upplevde sin orala hälsa efter avslutad strålbehandling. Studien är kvalitativ och består av intervjuer med åtta informanter. Intervjuerna har utförts med hjälp av en intervjuguide. Intervjuerna spelades in på bandspelare och varade i ca 10-20 minuter. Intervjumaterialet har analyserats med en kvalitativ innehållsanalys.

Omfattning och differenser av gränshävder kontra registerkartan i Boda, Skellefteå kommun

The cadastral index map is a great benefit to the surveying and governments. The map's main purpose is to show how the overall cadastral division looks in Sweden. The lack of quality of the cadastral index map dose not allows property-owners to know where to draw the boundary between their and others' property. In order to know where to find the boundaries between two properties, is it up to the property-owners themselves (self or in company by the other property-owner) to construct various usucaption at the boundaries. The main objective of the study is to verify the existence and extent of usucaption on forest properties in Bodan, a village outside Skellefteå.

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