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Ultrafast time-resolved electronic spectra of the primary events induced in the copper tetrasulfonated phthalocyanine Cu(tsPc)4-) in aqueous solution has been measured by femtosecond pump-probe transient absorption spectroscopy. The primary events initiated by the absorption of a photon occurring within the femtosecond time scale are discussed on the basis(More)
Using Laskar’s frequency map analysis, we investigate the long-term stability of Venus Trojan orbits. By measuring the diffusion rate of proper frequencies, we outline in phase space the most stable region. It is located between 5 and 10 in proper inclination with libration amplitudes ranging from 50 to 110 . The proper eccentricity is lower than 0.13. The(More)
Haloacetic acids are atmospheric oxidation products of airborne C2-halocarbons which are important solvents and propellants. Levels of trichloroacetate (TCA) in conifer needles from mountain ranges in Germany (Black Forest, Erzgebirge) and from two sites in Finland are compared; TCA is present in conifer needles at concentrations up to 0.7 μmol/kg, MCA up(More)
We numerically investigate under which conditions the planet detected at 2.1 AU of γ Cephei could form through the core-accretion scenario despite the perturbing presence of the highly eccentric companion star. We first show that the initial stage of runaway accretion of kilometer-sized planetesimals is possible within 2.5 AU from the central star only if(More)
We propose a morphological multi-scale analysis of large scale structures obtained by computer simulations and by observations. Structures are obtained at diierent scales by applying a wavelet transform on the observed and simulated data. Application of a segmenta-tion algorithm allows a quantitative morphological description of the structures at each(More)
40-Gbit/s OTDM transmission over a field-installed dispersion-compensated 130-km single mode fibre (SMF) link was demonstrated successfully (BER < 10/sup -12/). The impact of high PMD (7.8 ps) in the order of the RZ pulse width (7 ps) was studied in detail.
In this paper we explore the dynamical stability of the Mars Trojan region applying mainly Laskar’s Frequency Map Analysis. This method yields the chaotic diffusion rate of orbits and allows to determine the most stable regions. It also gives the frequencies which are responsible for the instability of orbits. The most stable regions are found for(More)