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Academic literature on the topic 'Tjockhet'
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Dissertations / Theses on the topic "Tjockhet"
Moen, Linn. "Kropp, tjockhet och genus : En kritisk diskursanalys av nätdiskussionsforumet Flashback." Thesis, Karlstads universitet, Fakulteten för humaniora och samhällsvetenskap (from 2013), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-43534.
Full textForsberg, Anna. "Representation av kroppar : En analys av vilken representation av kvinnlighet och kroppar som syns i livsstilsmagasin riktade mot kvinnor." Thesis, Malmö universitet, Malmö högskola, Institutionen för konst, kultur och kommunikation (K3), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-38995.
Full textGrundberg, Hans-Olof. "Oljefilmens tjocklek mellan kolvring och cylinderlopp." Thesis, KTH, Maskinkonstruktion (Inst.), 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-101104.
Full textHägglunds Drives i Mellansel tillverkar hydraulmotorer av radialkolvs typ, främst för industriella applikationer. I dessa motorer finns flertalet glidande kontakter varav en av dessa är kolvring mot cylinderlopp. Hydraulmotorns stora fördelar är att producera högt vridmoment vid mycket låga rotationshastigheter, vilket medför att den maximala glidhastigheten under ett arbetsslag är mycket låg. Den låga glidhastigheten får som följd att kontakten mellan kolvringen och cylinderloppet, under hela arbetsslaget, befinner sig i gränsskiktssmörjning. Detta medför att kolvringen blir utsatt för nötning, nötning som i sin tur påverkar livslängden på hydraulmotor i mycket hög grad. För att minimera nötning av kolvringen är det väsentligt att bestämma oljefilmens tjocklek mellan kolvringen och cylinderloppet. Detta för att man sedan skall kunna vidta åtgärder hos de glidande ytornas topografi, vilka i sin tur kan påverka oljefilmens uppbyggnad vid lägre glidhastigheter. I detta examensarbete har en metod för att mäta filmtjocklekar utförts i en testrigg som simulerar en hydraulmotor från Hägglunds Drives. Metoden baseras på att använda kapacitiva givare som placeras i cylinderfodret och mäter avståndet från givarens placering till kolvringen. Givarens har placerats med en offset från cylinderloppet varpå oljefilmens tjocklek baseras på avståndet mellan givaren och kolvringen minus avståndet från givaren till cylinderloppet. En förändring av oljefilmens tjocklek i förhållande till kolvhastigheten har observerats, dock inom området för standard avvikelsen i testet. En tydlig trend kan dock anas för trycket 30 MPa, där oljefilmen ökar med ökad kolvhastighet.
Bergdahl, Sara. "Skillnaden i central och perifer retinal tjocklek mellan olika ametropier - en OCT-studie." Thesis, Linnéuniversitetet, Institutionen för medicin och optometri (MEO), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-26595.
Full textJohansson, Christoffer. "Analys av Tjocklut med Akustisk Spektroskopi : Prediktering av Torrhalt." Thesis, Karlstads universitet, Institutionen för ingenjörs- och kemivetenskaper, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-33533.
Full textSunesson, Philip. "Sannolikhetsbaserad dimensionering av sprutbetong : Fördelningar för tjocklek och böjdraghållfasthet." Thesis, KTH, Jord- och bergmekanik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-210236.
Full textOne of the probability based methods that may be used when designing a tunnel is the partial factor method. This method adjusts the value of variables with the help of partial factors, which may be calibrated using a reliability-based approach. The Eurocodes provide these partial factors for different materials and structures, such as reinforced concrete. A limitation with the provided partial factors from Eurocode is the lack of consideration for the usage of the concrete. This thesis aims to investigate the possibility to derive new partial factors specifically for shotcrete reinforcement, for the failure mechanism of flexural failure. This has been done by means of reliability theory,FORM/FOSM. Flexural failure in shotcrete may occur when the adhesion between the rock and shotcrete is low. Further, the shotcrete has to have the capacity to withstand bending moments from the rocks. To derive the new partial factors, the measured data of thickness and flexural strength of shotcrete in one of Citybanan's tunnels, Norrströmstunneln, in central Stockholm have been used as the basis for the analysis. The data was described by a statistical distribution which enabled the usage of them in the reliability analysis. The results showed that a lognormal distribution best described the shotcrete thickness while flexural strength was best fitted by a beta distribution. The results also showed that it is not recommended to use probabilistic methods in design for this failure mechanism unless uncertainties, arising from some of the models and variables used, are reduced. It clearly shows that it would lead to oversizing compared with the design methods used today.
Westlinder, Johan. "Delmekanisering av aluminiumsvetsning i tjockt gods." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-156724.
Full textHultqvist, Emelie. "Förändringen av lipidskiktets tjocklek i tårfilmen mellan förmiddag och eftermiddag." Thesis, Linnéuniversitetet, Institutionen för naturvetenskap, NV, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-12323.
Full textÖsterlund, Patrik. "Förändrat körsätt av sodapannan." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-90390.
Full textThe student thesis has been carried out for five weeks at Smurfit Kappa Kraftliner in Piteå. The project assigned was to perform a change in their driving behaviour of the combustion air to the recovery boiler and eventually minimize problems with dust departure. The method of the experiments was to close the 1,1 MPa steam and only inject 0,3 MPa steam to the air preheater before injection into the recovery boiler. The purpose of the thesis was to analyse the experiments and evaluate if there are any negative consequences to run the plant with only 0,3 MPa steam. The computer program WinMops was used to evaluate how the facility had been running earlier in the year and then compare this with the results of the experimental runs. The purpose of the recovery boiler is to recover chemicals by burning black liquor and to produce overheated steam to the turbines. The control and driving style of the recovery boiler is important for the black liquor combustion to be optimal. The combustion depends on the composition of the black liquor and the combustion air that is added. With the right amount of air and in the right places, you can control how well the combustion will be depending on the composition of the black liquor. Therefore, the combustion air is inserted to the recovery boiler at four different levels. Combustion tests were performed on two occasions, 24 hours each, and resulted in many negative consequences. The degree of reduction of green liquor and outgoing steam quantity was reduced. The amount of air into the boiler increased when the air pressure went down as the temperature of the combustion air was lowered from 170°C to 132°C. Increased amount of air in the boiler led to increased amount of fumes, which had a negative effect on the dust departure. The conclusion from this study is that the problems of high dust departure continued even with the changed driving behaviour of the combustion air. The conditions for combustion experiments have not been optimal when a number of breakdowns occurred in the steam network. The results probably had become more reliable with longer trial periods because the black liquor composition varies from day to day.
Fournstedt, Daniel. "Jämförelse mellan Scheimpflug imaging och anterior segment OCT i mätning av Corneal tjocklek." Thesis, Linnéuniversitetet, Institutionen för medicin och optometri (MEO), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-44694.
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