Results 211 to 220 of about 33,071 (257)

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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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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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
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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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Effect of benzo-annelation on cyclic conjugation

Monatshefte für Chemie - Chemical Monthly, 2010
Earlier studies revealed that the effect of benzo-annelation on cyclic conjugation in the central ring of a polycyclic conjugated molecule obeys certain general regularities. We now elaborate quantitative models of this effect, showing that the main factors that need to be taken into account are the numbers of angularly, linearly, and geminally ...
Alexandru T. Balaban, Ivan Gutman, Svetlana Jeremić, Jelena Đurđević   +3 more
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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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Nature of Bonding in Cyclic Conjugated Ylides

The Journal of Physical Chemistry, 1996
The conjugative ability of the λ5-PC bond has been compared to its λ3-PC counterpart at the MP2/6-31G*//MP2/6-31G* level of theory, using isodesmic reaction energies. Investigating heterobutadienes, it has been observed that compounds containing a λ3-PC bond show similar delocalization energy as those with CC units. As for λ5-phosphabutadienes, however,
László Nyulászi, Tamás Veszprémi
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