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Autor:
Sandra Fátima Menosi Gualandro, Marli Haydee Tavella, Wilson A. Silva, Amelia G. Araujo, Claudine Lapoumeroulie, Marco Antonio Zago, J.E. Krieger, Jacques Elion, R. Krishnamoorthy, Mara H. Hutz, B. Dalle
Publikováno v:
American Journal of Hematology. 63:79-84
The majority of the chromosomes with the beta(S) gene have one of the five common haplotypes, designated as Benin, Bantu, Senegal, Cameroon, and Arab-Indian haplotypes. However, in every large series of sickle cell patients, 5-10% of the chromosomes
Publikováno v:
Journal of Applied Polymer Science. 45:2097-2103
The change of mechanical properties was followed during thermal aging at 85, 95, 105, and 120°C of the 10 PVC–didecylphthalate extrudates studied in the first part of this paper, but also of four new samples differing only by the plasticizer conce
Publikováno v:
European Polymer Journal. 27:55-59
Samples of PVC containing 15, 20, 25 or 30% by weight of didecylphthalate (DDP) were exposed to γ radiation, at ambient temperature in air. DDP seems to reduce the radiochemical yield of crosslinking, G(X), and to increase the radiochemical yield fo
Publikováno v:
Proceedings., Second International Conference on Properties and Applications of Dielectric Materials.
The dielectric strength of cross-linked polyethylene (XLPE) was measured under high hydrostatic pressure (50-500 bars) at temperatures of 30 degrees C, 45 degrees C, and 70 degrees C. Experimental results have shown that the breakdown field E/sub b/
Publikováno v:
Annual Conference on Electrical Insulation and Dielectric Phenomena.
Charge distribution evolution was measured on polyethylene samples subjected to an applied voltage of up to 120 kV. Plates and cables made of the same polyethylene with identical electrodes were used. This makes it possible in the case of planar samp
Publikováno v:
IEEE International Symposium on Electrical Insulation.
Aging tests were conducted using high-density polyethylene (HDPE) films subjected to hydrostatic pressure (1-300 bar). Breakdown-field-breakdown-time characteristics were obtained for a temperature of 70 degrees C. It was found that the pressure effe
Publikováno v:
Annual Conference on Electrical Insulation and Dielectric Phenomena.
In many cases of accelerated thermal aging of polymeric materials of electrical interest, for various Arrhenius lifelines corresponding to various properties of a given material, to various materials with the same endlife criterion, and to various en