α，α‘—二氧代烯酮环二硫代缩酮类化合物的特征红外光谱（Ⅲ）

研究了5种α，α‘-二氧代烯酮环二硫代缩酮类化合物的碳基、碳碳双键、碳硫等一些特征红外光谱，尤其着重研究了共轭体系下的各种特征谱带随化学结构而变化的规律。     

THE INTERIOR LAYER SOLUTION TO NONLOCAL REACTION DIFFUSION EQUATIONS

An initial boundary value problem of semilinear nonlocal reaction diffusion equations is considered.Under some suitable conditions,using the asymptotic theory,the existence and asymptotic behavior of the interior layer solution to the initial boundary value problem are studied.     

再生核空间W_2~2(*)中积分-微分方程精确解的表示

该文定义了一个再生核空间W_2~2(*),在其中讨论了积分-微分方程解的存在唯一性,给出了积分-微分方程一个定解问题的精确解的表达式及由精确解得出近似解的性质.     

Jackson和Vallee-poussin积分算子逼近连续函数

本文将对“D Jackson和Vallee—poussin算子逼近连续函数”加以改进而给出一个较准确的估计。     

氧化铝负载二苯基硫脲分离富集ICP-AES测定贵金属的研究

报道了氧化铝负载二苯基硫脲分离富集ICP-AES法同时测定痕量Pt,Pd,Au和Rh的新方法,研究了影响分离富集的各种条件(溶液酸度、流速、试样体积、洗脱剂的种类和体积及其共存离子的影响等)对测定上述痕量元素回收率的影响。在优化的实验条件下本方法的检出限分别为Au 0.0085,Pd 0.022,Pt 0.015和Rh 0.022μg·g~(-1),相对标准偏差小于5.0％,样品加标回收率在95％～105％之间。本方法已成功地应用于地质样品中痕量Pt,Pd,Au和Rh的测定。     

关于Robinson的一个结果

本文用不同于Abraham Robinson在文献[1]中所采用的方法证明了上面的命题:设（F,P）是一个有序域,g1（X1,…Xn）…,gm（x1,…xn）是F上的n元有理函数,则对于自然数a,必存在两个仅依赖于a和n的自然数λ和μ使得每个次数不超过a同时关于g1,…,gm的半强正定有理函数f（X1,…Xn）可     

Taxonomy of singers used as subjects in scientific research

Criteria for determining the classification of singers in research has posed numerous problems for both researchers and their readership. Previous attempts at creating usable categories have failed because of disagreement within the professions involved in such research. The object of this paper is to explore and suggest a system in which scientific research related to singing is based on a quantifiable singing standard. Use of the systematic categorization set out in this paper will help to alleviate the questions regarding performance abilities of singers used as subjects in scientific projects and lead to more credible results. Nine singer categories have been consolidated and based on proven performance achievement. These categories range from superstar (household name) to local community and amateur singers with comprehensive subcategories under each topic for each type of singer, that is, opera, pop, jazz, etc.     

关于P_n~3的优美性(英文)

设G(V,E)是一个简单图,对自然数k,当V(G~k)=V(G,E(G~k)=E(G)∪{uv|d(u,v)=k},则称图G~k为k-次方图,本文证明了图P_n~3的优美性。