نتایج جستجو برای: systematics
تعداد نتایج: 7190 فیلتر نتایج به سال:
The simultaneous emission of two protons is an exotic and complex three-body process. It very important for experimental groups investigating the nuclear stability on proton drip line to have a simple rule predicting two-proton decay widths with reasonable accuracy transitions between ground as well excited states in terms relevant physical variables. In spite its complexity, we show that proce...
Further evidence for the presence of an anomaly in binding energies for the "island of inversion" centered at Z =11, N =21 is obtained by comparison of shell-model calculations to experiment. The calculations were done with a shell-model interaction that is applicable to nuclei with active valence nucleons in both the (1s,Od) and (Of, lp) major shells. This interaction is described in detail as...
BAUM, B. R. 1992. Combining trees as a way of combining data sets for phylogenetic inference, and the desirability of combining gene trees. Taxon 41:3–10. BAUM, B. R., AND M. A. RAGAN. 1993. Reply to A. G. Rodrigo’s ‘A comment on Baum’s method for combining trees.’ Taxon 42:637–640. BININDA-EMONDS, O. R. P., AND H. N. BRYANT. 1998. Properties of matrix representation with parsimony analysis. Sy...
The data from Pioneer 10 and 11 shows an anomalous, constant, Doppler frequency drift that can be interpreted as an acceleration directed towards the Sun of aP = (8.74± 1.33)×10 cm/s. Although one can consider a new physical origin for the anomaly, one first must investigate the contributions of the prime candidates, which are systematics generated on board. Here we expand upon previous analyse...
This collection of articles provides an account of six presentations delivered at the 19th International Conference of the World Association for the Advancement of Veterinary Parasitology(WAAVP) (held in New Orleans, Louisiana, USA, from 10 to 14 August 2003) in a symposium session on Molecular Systematics and Diagnosis, organised and chaired by R.B. Gasser and D.S. Zarlenga. The focus was on r...
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