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fixed cores
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  fixed cores
The output is a set of patterns suggested to be embedded as fixed cores on the system by our algorithm.
      


The compound-atom states for beryllium-like ions are analysed with Feshbach projection operators. The projection operators are only applied to two excited electrons. The 1s orbital is optimized for 1s2 1S configuration of the Helium-like ions. The 2s and 2p orbitals are optimized for (1s22s)2S and (1s22p) 2P configuration of the Lithium-like ions respectively. The fixed-core approximation is used. The energies obtained in this work for the autoionized states 1P0 of BeI agree with experimental data...

The compound-atom states for beryllium-like ions are analysed with Feshbach projection operators. The projection operators are only applied to two excited electrons. The 1s orbital is optimized for 1s2 1S configuration of the Helium-like ions. The 2s and 2p orbitals are optimized for (1s22s)2S and (1s22p) 2P configuration of the Lithium-like ions respectively. The fixed-core approximation is used. The energies obtained in this work for the autoionized states 1P0 of BeI agree with experimental data by Esteva et al(4). The results obtained by Lendel et al gave 19.68eV state taken the place of (3s6p) 1P0 given bg Esteva et al., but our calculation can not discover the 19.68eV state. The energies for the autoionized states 1P0 from BII to OV and 1S6 from Bel to OV were also given in this work.

类铍子BeⅠ到OV的自电离态单重P态和单重S态在n=2到n=3能量域的几个最低的能级位置是利用多组态耦合的方法计算了的。并且利用Feshbach投影算符对类铍离子自电离态进行了理论分析。对于能够找到的实验测量、我们的计算与实验一致。

This paper summed up the experience of casting technology in producing railway-locomotive spare part spring box. which asked higher technical condition and hydraulic-press experiment. It will be a reference in future to deal with such sorts of valves castings that are characterized of complicated structure thin-wall.and have uneasy—fixed cores.

弹簧盒属于铁铬配件,技术条件要求较高并要求进行水压试验、通过对其工艺过程的总结,将为我们今后生产类似的薄壁、结构复杂、芯子难以固定的阀类件提供一个参考。

We present basic properties of Kleene Algebra and De Mogran Algebra,and various resalts on Kleene Algebra,De Morgan Algebra with fixed cores.The necessary and sufficient condition for a De Mogran Algebra have fixed cores is given.

研究了DeMorgan代数中的不动核的性质、特征.并且给出了DeMorgan代数含有不动核的充分必要条件.同时又对不动核的个数问题做了进一步的讨论.得到了一些结果

 
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