Zobrazeno 1 - 10
of 145
pro vyhledávání: '"F. TÜDŐS"'
Autor:
S. Mistreanu, F. Tudose-Sandu-Ville, C. Munteanu, R. Cimpoesu, M. Lutcanu, I. Știrbu, V. Manole, C. Stamate, O. Rusu, N. Cimpoeșu
Publikováno v:
Archives of Metallurgy and Materials, Vol vol. 69, Iss No 2, Pp 631-638 (2024)
The paper presents some aspects concerning mechanical contact fatigue and corrosion wear and the links of these two kinds of wear in the common deterioration of the contact layer. The surface state, for both presented areas, is analyzed using scannin
Externí odkaz:
https://doaj.org/article/bd46b0ea9ef94e79aa057b2412b60170
Autor:
P. K. Dávid, F. TüdŐs
Publikováno v:
Journal of Thermal Analysis. 47:589-593
The interpretation of the results of thermal measurements followed over decades the Arrhenius law. In recent years an apparently different interpretation (Eyring's equation) has been emerging in the literature on polymers. As the main reason for this
Autor:
P.K. Dávid, F. Tüdős
Publikováno v:
Polymer Degradation and Stability. 50:159-161
Numerous interpretations have already appeared concerning the compensation effect (CE). A recent proposal, associated with the study of polymers, suggests a linear relationship between Eyring's activation enthalpy and activation entropy as an explana
Publikováno v:
Reaction Kinetics and Catalysis Letters. 1:487-492
A new graphically evaluable linear method is suggested for the determination of the reactivity ratios of copolymerization. The main advantage of the proposed equation (5) is that it is very well adaptable for visual determination of the applicability
Publikováno v:
Journal of Chromatography A. 270:127-134
The chromatographic behaviour (retention and selectivity) of enantioners of a series of indole alkaloids (vincadifformine, aspidospermidine, vincadine, quebrachamine, N-methylquebrachamine, vincamine, apovincamine and eburnamonine) as studied on a st
Publikováno v:
Advances in Molecular Relaxation and Interaction Processes. 15:207-212
Secondary butyl phenyl nitroxide and isopentyl phenyl nitroxide radicals were synthesized and studied by ESR spectroscopy in DMF-ethanol, DMF-water and ethanol-water solvent mixtures. The variation of the nitrogen hf constant and g values were interp
Publikováno v:
Advances in Molecular Relaxation and Interaction Processes. 15:311-325
The hindered internal rotation of N-methylene groups has been studied through the temperature dependence of hyperfine coupling constants in ten different methylene-phenyl-nitroxide free radicals. Models consisting of two or three equilibrium conforma
Publikováno v:
Angewandte Makromolekulare Chemie. 15:1-8
Aus der Viskositat von auf Phenol-Formaldehyd basierendem Resol-Harz wurde die Geschwindigkeitsgleichung fur die Harzhartungsreaktion ermittelt. Den Untersuchungsergebnissen entspricht folgende Gleichung: Mit Hilfe dieser Gleichung wurde der Wert der
Publikováno v:
Acta Physica Academiae Scientiarum Hungaricae. 16:173-180
Publikováno v:
Physics Letters A. 24:310-312
The coupling of 13C nuclei that are present in natural abundance in the triphenylmethyl radical were determined, together with the spin densities at different positions of the radical.