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Browsing Articole științifice/Scientific articles by Author "Tămaş, Andra Dana"

Browsing Articole științifice/Scientific articles by Author "Tămaş, Andra Dana"

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  • A few aspects about the manufacturing process of five and two additives metal oxides varistors [articol] 
    Frigură-Iliasa, Mihaela; Tămaş, Andra Dana (Timişoara : Editura Politehnica, 2004)
    ZnO based varistors are today used for making state of the art surge arresters for all voltage levels. Essentially they are “n” semi-conductor ceramics made of ZnO (more than 90% molar percents) and many other oxides having ...
  • Heat transfer intensification with fluids’ flowing in laminar regime [articol] 
    Tămaş, Andra Dana; Vincze, Martin; Ciortan, N. A. (Timişoara: Editura Politehnica, 2011)
    In the paper the effect was studied of the presence of helical elements, having the role of turbulence promoters,on heat transfer intensification in coaxial tube heat exchangers, with fluids flowing in laminar regime. The ...
  • Rheological studies of some ethylene-glycol - TEOS gels [articol] 
    Tămaş, Andra Dana; Stoia, Marcela; Ștefănescu, M. (Timişoara : Editura Politehnica, 2008)
    Hybrid organic-inorganic materials, silica - ethylene glycol (EG), were prepared by the sol-gel process from mixtures of tetraethoxisilane (TEOS) and EG under acidic catalysis. The resulting hybrid material was studied ...
  • Specific effects in liquids subject to rotational motion [articol] 
    Borș, Nicu; Tămaş, Andra Dana (Timişoara : Editura Politehnica, 2008)
    Rotational motion in ring-shaped spaces delimited by concentric cylinders is specific to rotational viscometers and consists of the relative flow of the liquid layers with velocities varying between the maximum value which ...

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