Ordered state terms Links

A pre-supernova model of a 9Mq star is taken from Nomoto [3], which forms a 1.38 Mq O-Ne-Mg core. We link this core to a one-dimensional implicit La-grangian hydrodynamic code with Newtonian gravity. The equation of state of nuclear matter (EOS) is taken from Shen et al. [4]. We find that a very weak explosion results, where no r-processing is expected. In order to examine the possible operation of the r-process in the explosion of this model, we artificially obtain an explosion with a typical energy of 1051 ergs by application of a multiplicative factor (= 1.6) to the shock-heating term in the energy equation. 

In general, the NOS isoforms can be grouped into two classes as determined by their expression in cells. Certain NOS isoforms, termed constitutive, appear to be expressed at a fairly constant level in their host cells. However, these isoforms are inactive in their native state and require that the Ca -binding protein calmodulin associate with them in order to generate NO (Schmidt et al., 1991 Busse and Mulsch, 1990 Bredt and Snyder, 1994). Thus NO production by constitutive NOS isoforms is often linked to Ca +-mediated signal transduction cascades that involve soluble guanylate cyclase, which is a hemeprotein that is activated by NO (Arnold et al., 1977). 

Hartree-Fock orbitals are used. The contributions from these clusters are exactly equal to zero when Brueckner orbitals are usedso It is now also understandable that all products containing such as t t, t t k etc. will be small. Generally, the effect of linked tri-excited clusters as well as that of linked tetra-excited clusters is small. (The calculations demonstrating these effects will be discussed in Section VI.G.) It is possible to state that from three-electron clusters upwards the contribution to the correlation energy coming from linked clusters decreases rapidly. This is also understandable due to the fact that these contributions first appear in terms of higher orders in the perturbation expansion, which is demonstrated in Table 1. From the above discussion it is possible to conclude that the most important clusters are... 

In order to construct the A-doubling terms, we substitute the perturbation operator X in the second-order expressions and look for terms which link the rj, A = +1 basis state with rj, A = — 1). Because X contains two independent operators, we finish up with three independent contributions to the effective Hamiltonian which are as follows ... 

---