稀土元素原子发射光谱及其谱线干扰的高分辨率ICP-AES研究Ⅱ.钐基体对其他稀土元素的光谱干扰

稀土元素在当今生产、生活中具有极重要的地位，由于稀土元素的原子发射光谱极为复杂，因此光谱干扰给稀土元素的原子发射光谱分析带来极大的困难。本工作利用高分辨率ＩＣＰ－ＡＥＳ仪器详细研究了Ｓｍ基体对其他稀土元素重要分析线的光谱干扰，获得了大量的光谱及光谱干扰信息，为以稀土为基体的痕量稀土分析线的选择及光谱分析提供了依据     

On the orthogonal basis of the symmetry classes of tensors associated with the dicyclic group

A necessary and sufficient condition for the existence of orthogonal basis of decomposable symmetrized tensors for the symmetry classes of tensors associated with the dicyclic group is given. In particular we apply these conditions to the generalized quaternion group, for which the dimensions of the symmetry classes of tensors are computed.     

On the orthogonal basis of the symmetry classes of tensors associated with the dicyclic group

A necessary and sufficient condition for the existence of orthogonal basis of decomposable symmetrized tensors for the symmetry classes of tensors associated with the dicyclic group is given. In particular we apply these conditions to the generalized quaternion group, for which the dimensions of the symmetry classes of tensors are computed.     

X射线荧光光谱灰化薄样法测定铥镱镥富集物中九个重稀土元素

本文提出了一种灰化薄样制样法，ｘ射线荧光光谱分析铥镱鲁富集物中九种重稀土元素氧化物。方法具有标样制备简单，消耗纯稀土量少，标准样片易保存，制样成本低等优点，该法已用于稀土产品铥镱镥富集物的分析，分析结果的准确度和精密度符合生产要求。     

Feebly associative P -hypergroupoids

In this paper we study the hyperstructures, saidP-hypergroupoids, (H, P*) in whichH is a set andP* is one of the hyperoperations defined as follows: ∀(x, y) εH ²,xP*y=xyP orxP*y=Pxy whereP is a subset ofH. In particular we give a general formula for to express the simple hyperproducts ofn elements and then we consider some cases in which (H, P*) is feebly associative. We study, in such cases theβ-relations. Work supported by Italian C.N.R. (G.N.S.A.G.A.) and by the Italian M.U.R.S.T. (National interesting Projects of Research).     

基于SFA和Malmquist方法的公共部门效率区域差异及其决定因素分析

利用测量Malmquist生产率指数的SFA方法和BC(1995)模型,分析了中国省级地方政府公共部门效率区域差异及其决定因素,结果显示,省级公共部门技术效率随时间变化存在持续改进趋势,同时也发现居民受教育水平、城镇居民家庭可支配收入、每一公职人员服务人数和政府支出规模对公共部门技术效率有显著正影响,而人口密度和人均行政管理费支出对公共部门技术效率有显著负影响.