By re-analyzing the results of the theoretical abundance of AGB stellar models and the observed abundances of 51 AGB samples, we find that the abundance distribution of heavy elements belonging to the main-component of slow neutron capture process (SMH elements) of any AGB star is similar to that of the scaled s-process main component of the solar system.
通过对AGB星演化模型的理论计算结果和51颗AGB星的观测丰度进行重新分析,发现任何AGB星与慢中子俘获过程(s过程)主要分量对应的重元素(简称SMH元素)丰度分布都与对应的太阳系s过程主要分量的元素丰度分布相似,这表明,任意AGB星SMH元素丰度分布的迭加结果与对应的太阳系s过程主要分量的元素丰度分布相似,由此得出结论:太阳系s过程主要分量的重元素丰度分布模式是一个典型的模式,可以作为标准用于单星重元素丰度的研究。
And the mean neutron exposure of three lead-rich stars with superwind mass loss are larger than 2(mb)-1,and about 80% of substance in the He inter-shell will experience s-process repeatedly.
同时还发现:在考虑星风质量损失的情况下,三颗铅星的平均中子辐照量均超过2(mb)-1,富氦中间壳层中约80%的物质重复经历s-过程。
If the interdistances of some surveying points on the s-t process line appear to be abnormal, it can be demonstrated that there exist weak interlayers,fissures or faults.
该文通过s-t过程线上某些测点间间距的突变推断两测点间有软弱夹层、裂隙或断层存在 ,并通过小浪底工程进水口边坡F4 2 1断层产状的佐证 ,认为s -t过程线参与不明地质构造的判断是可行
This paper presents a model for OWL-S process model based on labelled Petri net and gives the transformation rule from process model to LPN.
提出了OWL-S过程模型的标签Petri网建模方法,给出了过程模型到LPN的转换规则,利用LPN分析方法对模型进行了可达性分析、死锁检测,能有效地检验过程模型描述的正确性。
Based on the distribution of neutron exposures for three typical AGB(Asymptotic Giant Branch) star models of s-process nucleosynthesis,the fraction of Fe seed nuclei that suffer neutron irradiation in the He intershell,or in other words,the probability that a Fe seed nucleus experiences neutron irradiation is discussed.
根据3种典型的AGB星s-过程核合成模型的中子辐照量分布,讨论了各恒星模型氦壳层区域内受中子照射的铁种子核数目比率(或铁种子核受中子照射的概率)。