Results 271 to 280 of about 4,233,370 (313)

Polymers with Cycloaliphatic Units in the Chain

Journal of Macromolecular Science: Part A - Chemistry, 1985
Abstract This paper describes the synthesis and characterization of some polycondensation polymers (poly- and copolyamides, polyesters) which contain cycloaliphatic units in their chains. Syntheses were carried out by a low-temperature polycondensation technique (interfacial and solution), and also by the Yamazaki method in NMP-pyridine solution using ...
V. Bulacovschi, C. I. Simionescu
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STATICS OF RIGID UNITS CHAIN

International Journal of Bifurcation and Chaos, 2001
The statics of one-dimensional rigid units chain subject to stretching force is analyzed. The potential energy of adjacent units interaction is assumed in the simple periodic form (harmonic in the small distortion limit). The position angles of subsequent units are given by the system of two iteration equations, one of them being irreversible.
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Spatial distribution of unit chains in glycogen

Carbohydrate Research, 1983
Abstract Cytophaga isoamylase is shown to catalyse an ordered and sequential exohydrolysis of the (1→6)-α linkages in glycogen, cleaving component (1→4)-α- d -glucosyl chains from the macromolecule in order of increasing depth of (1→6)-α linkage to the polymer.
T.Norman Palmer, Lynne E. Macaskie, Kanwaljit K. Grewal   +2 more
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Trip-Chaining Trends in the United States

Transportation Research Record: Journal of the Transportation Research Board, 2005
This paper uses data from the 1995 Nationwide Personal Transportation Survey and the 2001 National Household Travel Survey to examine trip-chaining trends in the United States. The research focuses on trip chaining related to the work trip and contrasts travel characteristics of workers who trip chain with those who do not, including their distance ...
Nancy McGuckin, Johanna Zmud, Yukiko Nakamoto   +2 more
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A polyarylate with 1,2-diphenylcarborane units in the chain

Polymer Science U.S.S.R., 1973
Abstract A polyarylate containing 1,2-diphenylcarborane chain units, which can form highly crystalline structures, has been prepared from 1,2-bis-(4-hydroxyphenyl)carborane and the acid chloride of 1,2-bis-(4-carboxyphenyl)carbonate. The parameters of the unit cell of the polymer have been determined and the degree of crystallinity of some samples ...
P.M. Valetskii, Ye.K. Lyamenkova, T.M. Babchinitser, A.I. Kalachev, V.P. Lebedev, S.V. Vinogradova, V.I. Stanko, V.V. Korshak   +7 more
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Average Unit Cell of the Fibonacci Chain

Acta Crystallographica Section A Foundations of Crystallography, 1998
An average unit cell for the Fibonacci chain has been constructed in physical space. The positions of atoms have been replaced by a statistical probability function of atomic displacements from the nearest point of the reference lattice. An analytical expression for diffraction peak intensities has been derived.
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Polymers with Anthrazoline Units in the Main Chain

Macromolecules, 1969
Abstract : The Friedlander quinoline synthesis was applied to 4,6-diaminoisophthaldehyde. This compound was condensed with acetophenone, 2-acetylpyridine, 4-acetyldiphenylether and phenylacetaldehyde yielding the corresponding anthrazolines (Pyrido(2,3-g)quinolines).
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Polymers with Triazene Units in the Main Chain

1995
Several monomeric and polymeric triazenes have been synthesized and characterized by common methods such as 1H NMR-, IR-, Raman-, UV-spectroscopy, DSC, and GPC. Their thermolysis, photosensitivity, and the effect of H3O+ on their stability have been studied in detail, since those characteristics are very important for an application of these compounds ...
Oskar Nuyken, Jürgen Stebani, Alexander Wokaun, Thomas Lippert   +3 more
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CHARMM36 United Atom Chain Model for Lipids and Surfactants

The Journal of Physical Chemistry B, 2014
Molecular simulations of lipids and surfactants require accurate parameters to reproduce and predict experimental properties. Previously, a united atom (UA) chain model was developed for the CHARMM27/27r lipids (Hénin, J., et al. J. Phys. Chem. B.
Lee, Sarah, Tran, Alan, Allsopp, Matthew, Lim, Joseph B., Hénin, Jérôme, Klauda, Jeffery B.   +5 more
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Polymers with Main-chain Mesogenic Units

1989
Low molecular weight, liquid crystalline compounds (LCs) have been known for 100 years,1 but liquid crystalline polymers (LCPs) attained prominence only during the past 30 years. Synthetic and natural polymers with a degree of molecular order, established either in solution (lyotropic) or in the melt (thermotropic), intermediate between that of a solid
Erno Chiellini, Robert W. Lenz
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