Results 171 to 180 of about 304 (209)

Cyclic Conjugation Effects in Cyclacenes

Polycyclic Aromatic Compounds, 1996
Abstract Cyclic conjugation is studied in Huckel and Mobius cyclacenes as well as in a few other related open-chain and cyclic belt-shaped hydrocarbons (e.g., zig-zag cyclarenes). the main conclusions are that (a) the energy effect of the conjugation along the perimeter of cyclacenes is relatively large, (b) conjugation along the 6 -, 10 - and 14 ...
Israel Agranat, Ivan Gutman, P Ulrich Biedermann   +2 more
exaly   +2 more sources

Synthesis of Cyclic Conjugated Polyolefins

Nature, 1947
Considerable interest is attached to the properties of cyclic conjugated polyolefins1, and in a number of studies we have been exploring possible routes to analogues and derivatives of such mono- and bi-cyclic structures as those of cyclo-octatetraene and azulene.
D H S, HORN, J R, NUNN, W S, RAPSON
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Improved cyclic and conjugate cyclic music

Processing Workshop Proceedings, 2004 Sensor Array and Multichannel Signal, 2005
By exploiting cyclostationarity that is inherent in many communications signals, cyclic MUSIC has been shown to be able to perform signal selective direction of arrival (DOA) estimation under colored noise and clutter. However, the DOA estimation of cyclic MUSIC is actually biased.
H. Tan, H.H. Fan
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Cyclic Conjugated Diacetylenes

Synthetic Communications, 1972
Abstract The synthesis of α-bisethynyl compounds, IV and VIII, and cyclic conjugated diacetylenes, V and IX, was performed according to Scheme 1. Bisethynyl compounds, IV and VIII, were prepared in good yields by ethynylation of bromides II, III and VII in N-ethyl-2-pyrrolidone with liquied ammonia solution of sodium acetylide at atmospheric pressure ...
T. Matsuoka, T. Negi, S. Misumi
openaire   +1 more source

Cyclic, Modified and Conjugated Peptides

ChemInform, 2003
AbstractFor Abstract see ChemInform Abstract in Full Text.
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Cyclic, modified and conjegated peptides

1993
The subject matter for this Chapter has again been allocated sub-headings that reflect main subject areas under which a reasonable number of publications have been cited. In the absence of a detailed keyword index, the sub-headings also provide continuity from previous volumes, so that searching the...
J. S. Davies, John S. Davies
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Cyclic conjugation and the hückel molecular orbital model

Theoretica Chimica Acta, 1981
A new graphic polynomial, μ (G, t), has been introduced which depends on a vectort and which reduces to the characteristic and matching polynomial of the graphG for certain choices oft. This leads to a unification of a great part of the previously developed theories of the characteristic and matching polynomials.
I. Gutman, O. E. Polansky
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ChemInform Abstract: Cyclic, Modified, and Conjugated Peptides

ChemInform, 1987
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
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ChemInform Abstract: Cyclic, Modified and Conjugated Peptides

ChemInform, 1992
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
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Cyclic modified, and conjugated peptides

1986
J. H. Jones, P. M. Hardy
openaire   +1 more source