Search Results
. TA Heusner S Kuemmel S Hahn 2009 Diagnostic value of full-dose FDG PET/CT for
. 11 Varga , E. 2008 . A terminológiai munkák egy kisvállalkozás sikeres tevékenységében. A PET flakonfúvás néhány terminológiai kérdése . Szakdolgozat. NymE–SEK BTK, Szombathely : Kézirat .
Abstract
Electro-conducting doped polypyrrole was deposited by in situ oxidative polymerisation on PET non-wovens. Thermal properties were evaluated by means of DSC and TG in nitrogen and air. Flame resistance tests reveal that coated PET fibres resist to direct contact with fire. By thermal analysis, it was found that PPy reduces the temperature at which thermo-oxidative degradation of PET occurs. Polypyrrole-coated PET non-wovens were heated above the melting point of PET for 30 min. After the heating the fibres become brittle and frail, but SEM observations revealed that they maintained their fibrous shape. A loss of chlorine was found because of intense heating.
Abstract
PHB [poly (3-hydroxybutyrate)], post-consumer soft-drink bottles poly (ethylene terephthalate) PET (herein named PET-R) and PHBPET-R (blends of PHB and PET-R in several compositions) samples were evaluated by differential scanning calorimetry (DSC) and scanning electronic microscopy (SEM) in order to verify their thermal properties and porosity according to amounts of PET-R added the blends. The DSC curve showed that the solvents used to solve the polymer mixture cause changes in the thermal behavior of PET-R films and in PHBPET-R blends. SEM studies of the PHBPET-R blends show that with a gradual mass increase of PET-R, there are gradual increases in the porosity of the films.
A metabolikus képalkotás – PET, PET/CT – onkosebészeti vonatkozásai
Metabolic imaging – PET, PET/CT – in oncosurgery
JT Yap NC Hall 2004 PET/CT today and tomorrow J Nucl Med 45 Suppl 1 4
Abstract
PET films uniaxially drawn in hot water are studied by means of conventional DSC and modulated DSC (MDSC).Glass transition is studied by MDSC which allows to access the glass transition temperature T g and the variations of ΔC p=C p1−C pg (difference between thermal capacity in the liquid-like and glassy states at T=T g). Variations of T g with the water content (which act as plasticizer) and with the drawing (which rigidifies the amorphous phase) are discussed with regard to the structure engaged in these materials. The increments of ΔC p at T g are also interpreted using a three phases model and the 'strong-fragile’ glass former liquid concept. We show that the ‘fragility’ of the medium increases due to the conjugated effects of deformation and water sorption as soon as a strain induced crystalline phase is obtained. Then, ‘fragility’ decreases drastically with the occurring rigid amorphous phase.
Introduction Poly(ethylene terephthalate) (PET) composites with nano-size inorganic reinforcement are of great interest due to the improvement in electrical, mechanical, and thermal properties as well as high performance in
. 2015; 125: 157–166. 6 Emri M, Ésik O, Repa I, et al. Image fusion of different tomographic methods (PET/CT/MRI) effectively contribute to therapy planning. [A metszetképalkotó
429 433 Pfannenberg, A. C., Aschoff, P., Brechtel, K., et al.: Value of contrast-enhanced multiphase CT in combined PET/CT protocols for oncological imaging. Br. J
