Sökning: "Juan Diamond"

Hittade 2 uppsatser innehållade orden Juan Diamond.

  1. 1. SUSTAINABLE LUBRICATION FOR FUTURE TRANSMISSIONS : Micropitting performance of Glycerol-based lubricants

    Master-uppsats, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Författare :Zapata Tamayo Juan Guillermo; [2021]
    Nyckelord :micropitting; mild sliding wear; surface coating; diamond-like carbon DLC; glycerol-based lubrication; green lubricant; rolling contact fatigue; rolling-sliding;

    Sammanfattning : Achieving sustainable lubrication by using environmentally friendly formulated lubricants has became an essential component of the transition process from fossil-powered vehicles to electrified transportation. Mixtures, or aqueous solutions of molecules such as polyhydroxy alcohols, and glycols usually known as green lubricants make it possible to achieve low friction coefficients under different lubrication conditions, which constitutes a potential alternative to improve the tribological performance of moving parts in automotive systems, at the same time that the environmental requirements are satisfied. LÄS MER

  3. 2. Colombias mångfasetterade problem : - En fallstudieanalys av landets avsaknad till liberal demokrati mellan åren 1991 - 2015

    Kandidat-uppsats, Linnéuniversitetet/Institutionen för statsvetenskap (ST)

    Författare :Christoffer Nilsson; [2017]
    Nyckelord :Colombia; Liberal Demokrati; Valdemokrati; Demokratisk Konsolidering; Interaktiva arenor; Juan J. Linz; Alfred Stepan; Larry Diamond;

    Sammanfattning : This essay aims to explain why Colombia has not consolidated into a liberal democracy between the years 1991 to 2015. To examine the purpose of this essay five interactive arenas are analyzed in order to describe to which extent Colombia is affected by the various arenas. LÄS MER