Angular distributions of the 14–17 MeV g rays from the Li~p ,g) reaction at Ep5450, 402, and 80 keV were measured at 0°<u lab<135°, using a BGO detector and a 28-mg/cm 2 LiF target. The angular distributions at Ep5450 and 402 keV agree with the previous results by Mainsbridge; at Ep580 keV the ground-state transition is anisotropic on the order of 20%, confirming recent results by Chasteler et al.

A quark-cluster state, rather than the color-super-conductivity state, may appear in matter with low-temperature but high density, since the phase transition of chiral symmetry broken and that of color-confinement could not occur simultaneously. Such quark clusters might be stable in strange quark matter. Quark stars would have temperatures to be low enough to freeze by residual color interacti...

We report the detection, with the Caltech Submillimeter Observatory, of the 894-GHz HDO(11,1−00,0) transition, observed in absorption against the background continuum emission of the SgrB2 cores M and N. Radiative transfer modeling of this feature, together with the published data set of mm and submm HDO and H 2 O transitions, suggests that ground-state absorption features from deuterated and n...

The main objective of an ecosystem sustainable management is to preserve itscapacity to respond and adapt to current disturbances and/or future changes, and maintain theprovision of environmental goods and services. Two very important properties linked to thisobjective are the ecosystem resilience and resistance to disturbance factors. The objective ofthis paper is to recommend conceptual modif...