Zobrazeno 1 - 10
of 250
pro vyhledávání: '"J.-J. Andre"'
Autor:
J J Andre Muller, Janine Ezendam, Emiel Rorije, Jan van Benthem, Aldert H. Piersma, Mirjam Luijten, Leo T.M. van der Ven
Publikováno v:
Critical Reviews in Toxicology. 44:876-894
Regulatory toxicology urgently needs applicable alternative test systems that reduce animal use, testing time, and cost. European regulation on cosmetic ingredients has already banned animal experimentation for hazard identification, and public aware
Autor:
F X Rolaf van Leeuwen, Aldert H. Piersma, Lya G. Hernández, Jan van Benthem, J J Andre Muller, Marcel T M van Raaij, Theo Vermeire
Publikováno v:
Critical Reviews in Toxicology. 41:545-554
This paper surveys the scientific basis for the current threshold approach for reproductive hazard and risk assessment. In some regulatory areas it was recently suggested to consider reproductive toxicants under the stringent linear extrapolation ris
Publikováno v:
Materials Research Bulletin. 34:1521-1525
Results are reported for electron paramagnetic resonance (EPR) and optical absorption structural investigations of Mn 2+ ions in alkali barium borophosphate glasses at room temperature. The Mn 2+ EPR hyperfine sextet centered at g = 2 was observed in
During the past thirty years considerable efforts have been made to design the synthesis and the study of molecular semiconductors. Molecular semiconductors - and more generally molecular materials - involve interactions between individual subunits w
Publikováno v:
Journal de Chimie Physique. 91:741-747
Des derives mesogenes de la phtalocyanine de cuivre (monomere et dimeres) ont ete synthetises et caracterises par RPE. Les resultats preliminaires montrent que dans le cas de dimeres comportant un cycle sature l'interaction intramoleculaire est princ
Autor:
F. Bensebaa, J. J. Andre
Publikováno v:
ChemInform. 23
Autor:
Alain Louati, Jean-Pierre Brunette, Yves Frère, Matthieu Bernard, J. J. Andre, Catherine Haubtmann, Agus Kuncaka, Maurice Gross
Publikováno v:
ChemInform. 25
The preparation and characterization of the bis(β-diketone) 1,10-di(α-cyclohexanone)decane-1,10-dione (H2L11) and 3,14-diacetylhexadecane-2,15-dione (H2L22) ligands, are reported. A direct electrochemical generation of CuIIL complexes is achieved.
Autor:
F. Bensebaa, J. J. Andre
Publikováno v:
The Journal of Physical Chemistry. 96:5739-5745
Magnetic resonance data of LiPc . , in the temperature range 4.2-380 K, are reported and analyzed. The low-temperature ESR spectrum exhibits two distinguishable lines that we call A and C, whereas at high temperature a third line, denoted by B, devel
Autor:
P. Petit, J. J. Andre
Publikováno v:
Journal de Chimie Physique. 89:567-581
Time resolved ESR spectroscopy makes possible direct studies of paramagnetic systems as organic radicals and metallic complexes. Spin dynamics may be directly studied and short lifetime radicals may be observed. Spin echoes are the basis of pulsed ES
Publikováno v:
Review of Scientific Instruments. 62:685-694
A CW electron spin resonance (ESR) spectrometer working at earth‐field is described for the first time. The optimized sensitivity has allowed to reduce the size of the sample holder down to 100 mm3, a low value for such a low working frequency (1.8