[PDF] Top 20 Las redes sociales de Internet: también dentro de los hábitos de los estudiantes universitarios

... 68 States near the Fermi surface of closed-shell nuclei display 69 single-particle (SP) behavior [1,2]. This fact underpins the 70 success of the nuclear shell model (SM) [3] and motivates a 71 simplified description of ... See full document

... the isospin splitting seems not to be observed at the energy above the neutron emission threshold; however more precise measurements are necessary to better prove this ... See full document

... The average calculated fragment multiplicities measured at 45 A MeV are plotted in fig. 3 as a function of the source N/Z, for the two EOS. We observe that the multiplicity of primary fragments increases for neutron-rich ... See full document

... The isospin dependance is still heavily debated and it is unsettled whether this is an indication of correlation effects missing in SM calculations [20] or deficiencies in the reaction model, which is based ... See full document

... Exact description of the four-nucleon scattering is given by the Faddeev-Yakubovsky equations [54] for the wave- function components or by the equivalent AGS equations [55]. We use isospin formalism and solve the ... See full document

... Such a dibaryon resonance, which asymptotically resembles a deeply bound system, was predicted first – and astonishingly precise as it turns out now – by Dyson and Xuong [13] in 1964 based on SU ( 6 ) symmetry breaking. ... See full document

... pion condensation [3, 4]. The associated phase transition is expected to be of second order in the O(2) universality class. While unimportant for most of the situations with isospin asymmetric matter, pion ... See full document

... We sought to examine the relationship between deer mouse (Peromyscus maniculatus rubidus; see Plate 1) demography and predation of trillium (Trillium ova- tum) seeds in fragmented forests where trillium pop- ulations are ... See full document

... Dynamic fracture and fragmentation are late-stage pro- cesses that can occur in shock and high strain rate events. Fracture behaviour/mode is governed by the material prop- erties, experimental variables ... See full document

... Twenty years after a Letter of Intent by the GSI and LBL groups for the “Study of particle production and target fragmentation in central 20 Ne on Pb reactions, at 12 GeV per nucleon ene[r] ... See full document

... leading isospin breaking effects in mesonic masses using O(a) improved Wilson ...fermions. Isospin symmetry is explicitly broken by distinct masses and electric charges of the up and down ... See full document

... These decay constants can be thought of as giving the quark wave function at the origin of the pseudoscalar meson. Since the mass splitting between singlet and non-singlet is not reproduced directly in quenched QCD, it ... See full document

... river network (basin). This index incorporated three vari- ables: number of barriers, placement (location within the network) and passability (probability to cross a barrier). Thus, for resident or potamodromous fish, ... See full document

... The work presented has been carried out partly at Dept. of Crop Physiology and Soil Science, Danish Institute of Agricultural Sciences (DIAS) and partly at Dept. of Land Resource Science, University of Guelph, Ontario, ... See full document

... There were 4 groups of animals treated with 6-MP: A 9 animals were treated with 6 mg per kg per day for 2 weeks; B 7 animals were treated with 10 mg per kg per day for 2 weeks, then ever[r] ... See full document

... Focusing on the 1999-2003 proliferation events, we applied a binary outcome as well as a count data analysis to explore the determinants of the proliferation. Aside that the panel estimation provides more information ... See full document

... The PCOs three dimensions account for 13.5%, 10.2% and 8.1% of the observed variation respectively. In the ordination analysis, nine groups were delimited as shown in figure III. In the PCO plot, the species found at ... See full document

... We extracted masses from all correlation functions of operators in table 1. As already mentioned above we were not able to extract any masses, except for the pions, for parameter set 2. For parameter set 1 we were able ... See full document

... Recent developments and applications of the charge-exchange RQTBA have been discussed. First of all, pairing correlations have been taken into account self-consistently in this channel, so that sys- tematic ... See full document

... Using a model plant-pathogen system in a large-scale habitat corridor experiment, I found that corridors do not facilitate the movement of wind dispersed plant pathogens, that connectivity of patches does not enhance ... See full document