Sökning: "arrhenius"

Visar resultat 1 - 5 av 43 uppsatser innehållade ordet arrhenius.

  1. 1. Evaluating Technical Lifetime of Radio Circuit Boards : by Measuring Degradation and Aging of Hold-up Capacitors

    M1-uppsats, KTH/Hälsoinformatik och logistik

    Författare :Otto Tellberg; [2023]
    Nyckelord :technical lifetime; Arrhenius equation; radio circuit board; aluminum electrolyte capacitor; performance degradation; global temperature rise; teknisk livslängd; Arrhenius ekvation; radiokretskort; aluminium elektrolytkondensator; prestandadegradering; global temperaturökning.;

    Sammanfattning : The aim of this thesis is to improve the knowledgebase regarding the technical lifetime of radio circuit boards. The purpose is to create opportunities to facilitate the design of products that live up to the customers' requirements and to Ericsson's sustainable responsibility goals. LÄS MER

  3. 2. Konditionsbedömning av en grupp transformatorer på Forsmark kärnkraftverk : Modellbaserad åldringsanalys av transformatorer

    Master-uppsats, Uppsala universitet/Institutionen för fysik och astronomi

    Författare :Samuel Sjöqvist; [2023]
    Nyckelord :Transformator; elkraft; energisystem; kärnkraft; åldrandehantering;

    Sammanfattning : This thesis used a model-based approach to assess the condition of a group of transformers at Forsmark nuclear plant. Since it’s problematic for practical and economic reasons to examine the paper insulation by inspection, this approach was chosen. LÄS MER

  4. 3. Investigation of high temperature stability of additive manufactured austenitic stainless steels for space applications

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Materialvetenskap

    Författare :Belén Alonso Rancurel; [2023]
    Nyckelord :austenitic stainless steel; additive manufacturing; high temperature corrosion; high temperature stability;

    Sammanfattning : Additive manufacturing (AM) techniques are being studied for their application in the aerospace industry. Numerous benefits come from the already in shape final piece, which needs reduced amount of prime material for its production and can have its shape numerically optimized for weight reduction. LÄS MER

  5. 4. Temperature dependency of rheological properites of different dispersions containing microfibrillated cellulose

    Master-uppsats, Karlstads universitet/Institutionen för ingenjörs- och kemivetenskaper (from 2013)

    Författare :Johanna Swanelius; [2022]
    Nyckelord :Microfibrillated cellulose; MFC; waxy maize starch; rheology; temperature; viscosity; complex viscosity; stready shear viscosity curve; amplitude sweep; dry content; dynamic rotational rheometer; Mikrofibrillerad cellulosa; MFC; vaxartad majsstärkelse; reologi; temperatur; viskositet; komplex viskositet; flödeskurva; amplitudsvep; torrhalt; dynamisk reometer;

    Sammanfattning : Today, the focus lies on the state of the environment and how we can choose more sustainable alternatives to oil based materials. One material of interest is microfibrillated cellulose (MFC). LÄS MER

  7. 5. Återbegravning och Maktobalans: ett arkeologiskt dilemma : Fallstudier av återbegravningar av samiska mänskliga kvarlevor i Sverige

    Kandidat-uppsats, Umeå universitet/Institutionen för idé- och samhällsstudier

    Författare :Julia Arrhenius; [2022]
    Nyckelord :Arkeologi; urfolk; repatriering; återbegravning; Sami; Gammplatsen; Lycksele; Soejvengelle; Atoklimpen; Tärnaby;

    Sammanfattning : The purpose of this essay is to investigate two different cases of reburial of Sámi human remains in Sweden, these being the reburial of Soejvengeele “the shadow man” in Tärnaby 2002, whose grave was excavated in 1950 by ethnologist Ernst Manker. The second case consist of the reburial in Lycksele 2019 of human remains of about 25 individuals which were excavated in 1950-51 by Västerbottens museum under the guidance of Karl Cajmatz. LÄS MER