Showing papers by "University of Twente published in 1976"
TL;DR: In this paper, the elastic modulus in the crystalline region in the chain direction (Ecr) was calculated on a bundle of filaments of PRD 49 fibre, which was identified by i.r. and X-ray analyses as poly(p-phenylene terephthalamide).
33 citations
TL;DR: A complete system, based on the online PDP-11 computer, was developed for computerized sampled d.c. polarography with direct digital control and includes compensation of ohmic cell resistance and processing of the polarographic data.
22 citations
TL;DR: In this article, the coulometric titration of acids and bases in DMSO media is described, and the accuracy of the titrations is better than ± 1 %, where the conditions for 100 % current efficiency at this electrode are low current density to avoid passivity and regular treatment of the electrode with potassium dichromate to remove poisoning sulfide layer.
7 citations
01 Jan 1976
TL;DR: In this paper, it was shown that a PT0L language $L_0$ such that the following holds: there exists an infinite collection of EPDT0L languages $Dmn{mn}subseteq \Sigma_{mn}^\star$ ($n\geq m{mn}.
Abstract: There exists a PT0L language $L_0$ such that the following holds. A language $L$ is an ET0L language if and only if there exists a mapping $T$ induced by an a-NGSM (nondeterministic generalized sequential machine with accepting states) such that $L = T(L_0)$. There exists an infinite collection of EPDT0L languages $D_{mn}\subseteq\Sigma_{mn}^\star$ ($n\geq m\geq 1$) such that the family EDT0L is characterized in the following way. A language $L$ is an EDT0L language if and only if there exists $n\geq m\geq 1$, a homomorphism $h$ and a regular language $R \subseteq \Sigma_{mn}^\star$ such that $L = h(D_{mn} \cap R)$.
3 citations
01 Jan 1976
1 citations