Topic
Valency
About: Valency is a research topic. Over the lifetime, 1632 publications have been published within this topic receiving 26141 citations.
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TL;DR: This paper proves that the star valency of G is either ⌈dmax-ave(G)/2⌉ + 1, and provides a polynomial time algorithm for determining the starValency of a graph.
2 citations
2 citations
Patent•
03 Feb 1988
TL;DR: In this paper, a fluorine carboxylic ester membrane is used as an ion exchange membrane to change the valency of an aq. metal ion soln. by using fluorine anion exchange membrane having a specified structure.
Abstract: PURPOSE:To efficiently change and control the valency of an aq. metal ion soln. by using a fluorine anion-exchange membrane having a specified structure produced by applying treatment with an acid or a base. CONSTITUTION:The valency of an aq. soln. of a metal ion capable of forming plural oxidation states is changed and controlled by anion-exchange membrane electrolysis. A membrane formed from a copolymer consisting of a repeating unit shown by the formula is treated with an acid or a base, and an anion- exchange group is introduced into the copolymer to obtain a fluorine carboxylic ester membrane which is used as the anion-exchange membrane in this case. In the formula, X is F or CF2, (l) is 0 or 1-5, (m) is 0 or 1, (n) is 1-5, p/q is 4-16, and R is an alkyl. Since the anion-exchange membrane has excellent durability and a metal ion is not leaked, the membrane is applicable to various processes, and the valency of the metal ion can be efficiently changed and controlled.
2 citations
TL;DR: In this article, the authors studied peierls transitions in one dimensional charge transfer salts in which both donor and acceptor molecules have even valency such as TTF-TCNQ.
2 citations