加权Lebesgue空间的对偶和嵌入

本文建立了加权Lebesgue空间的对偶空间，并且给出了在这些空间之间嵌入的必要条件。     

证据的λ—合成

本文讨论了信任测度的直观含意,信任测度的合成及证据组相互独立的问题。回顾了Dempster合成规则,并在揭示其局限性之后给出了一种新的合成规则——λ-合成规则。     

Sufficient and Necessary Condition for the Measurability of Fallable Fuzzy Sets

Let(X,)be a measurable space,and,=σ-field generated by {x|x∈X},where x={A∈ |x∈A}.(Y,)another measurable space,let ρ(X, Y,)={∈ |§ be measurable}.∈ρ(X,Y,),we define ()(y)=~(-1)(y),y∈y. Defination 1.T is an index set,f:{0,1}~T→{0,1},then,O~T:( (Y)~x)~T→ (Y)~x is called the operation derived from f if for any { }_(t∈T)∈((Y)~x)~Tand any(x,y)∈X×Y,it holds     

Time resolve study on isopropyl-ether porphyrindiol

In the past years extensive studies have been conducted on porphyrin-type photosensitizers because of their photosensitive activity. With regard to their interaction with many important macromolecules such as nucleic acids, proteins and lipids, porphyrin-type photosensitizers are capable of damaging numerous cells. They damage DNA via oxidation of four bases, especially guanine and cytosine pairs[1], damage protein by oxidation of (at least) two amino acids——cysteine and tryptophan residues…     

Computation of frequencies and damping ratios for adaptive structures

In this paper, a new technique of state vector approach to solving damping ratios of adaptive structures is proposed, by which the state matrix can be analytically conducted the Cholesky decomposition, providing that the mass matrix is derived by lumped method. In this case, not only the computional accuracy is raised, but also the numerical operations are reduced. Finally, some numerical results are presented to show that the solution method is simple and efficient. Foundation item: the National 863 Program Foundation of China(863-2-4-4-4)     

自适应结构频率和阻尼比的计算

本文给出状态空间法的一种新技巧,用于求解自适应结构的振动频率和阻尼比。当采用集中质量法时,状态矩阵的Cholesky分解具有解析式。从而既可提高计算精度,又可节约计算时间。最后以算例加以说明。     

COMPUTATION OF FREQUENCIES AND DAMPING RATIOS FOR ADAPTIVE STRUCTURES

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异丙醚卟啉双醇时间分辨

应用激光光解、脉冲辐解等时间分辨技术研究了脂溶性卟啉衍生物——异丙醚卟啉双醇. 阐明了异丙醚卟啉双醇激发三重态的特征吸收并测得其摩尔消光系数(苯溶液中ε₅₁₅, ε₄₅₀分别为1.07×10⁵, 3.3×10⁴ dm³·mol^-1·cm^-1)、量子产额(0.18)等重要参数. 二元体系的研究表明该卟啉衍生物激发三重态不能通过能量/电荷转移激发/氧化dGMP分子.     

2-甲基-1,4-萘醌对DNA光敏损伤的诱导作用

选择波长337 nm的激光作为激励光源,借助凝胶电泳研究了2-甲基-1,4-萘醌诱导的DNA光敏损伤.结果表明:在氧气饱和、脱氧条件下光敏损伤显著,DNA损伤主要与光子剂量、核酸与萘醌浓度比及DNA存在形式有关.     

概念型模糊集的运算

现在人们研究和处理的模糊集就其实际含意大致可分为三类,即技术型模糊集,概念型模糊集和拼合型模糊集.对不同类型的模糊集有不同的研究目的和方式,圳此产生了不同的理论系统.本文所叙述的是概念型模糊集理论的一部分.概念型模糊集的现实原型是人们在长期实践活动中逐渐形成的.用于思维和通讯的模糊概念.本文所讨论的是怎样将复杂的模糊信息简化的问题.