Results 221 to 230 of about 224,947 (269)
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Crystalline Structure in Starch
2015Many reviews have been published on the crystalline structure of the starch granule, addressing aspects such as birefringence, crystallinity, and structural models for A- and B-type starches. After a synthetic presentation of the general knowledge on this topic, the present review focuses on a critical description of the main techniques used to ...
Lourdin, Denis +5 more
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The crystalline structure of isotactic polyallylcyclopentane
European Polymer Journal, 1972Abstract The crystalline structure of isotactic polyallylcyclopentane has been examined. Since there are 3.42 ± 0.01 monomeric units per pitch, the helical symmetry is very near to s(24/7)I and the helices are packed in a terragonal unit ceil ( a = 20.30 ± 0.05 A , c = 47.40 ± 0.12 A ).
PETRACCONE V +2 more
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Hydrogels with Crystalline or Liquid Crystalline Structure
Macromolecular Rapid Communications, 2002The formation of ordered structure in hydrogels derived from copolymers of hydrophilic and hydrophobic monomers with crystalline or liquid-crystalline moieties is reviewed. The role of water in the formation of ordered structure and its influence on the thermal and mechanical properties of hydrogels are clarified.
Takashi Miyazaki +3 more
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Structure of crystalline methyl-chymotrypsin
Journal of Molecular Biology, 1972Alpha-chymotrypsin, methylated specifically at the Nδ2-position of His-57, crystallizes isomorphously with the native enzyme. This finding enabled us to determine the structure of methyl-chymotrypsin utilizing the phase information of tosyl-chymotrypsin.
C S, Wright, G P, Hess, D M, Blow
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Structure of crystalline actin sheets
Nature, 1980Although actin is one of the most abundant proteins found in nature, little detailed information about its molecular structure is available beyond the amino acid sequence. Electron microscopy of negatively stained filaments combined with three-dimensional image reconstruction techniques have revealed the overall size and shape of the actin monomer at ...
U, Aebi +3 more
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Crystalline Structures of Alginic Acids
Nature, 1970WE have recently obtained X-ray diffraction photographs from orientated samples of alginic acid preparations in which the ratio of mannuronic acid to guluronic acid was known. The purified unorientated material was supplied by Dr A. Haug, and our results form the basis for structure determinations of polymannuronic acid and polyguluronic acid ...
E D, Atkins, W, Mackie, E E, Smolko
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Macromolecular structure and liquid crystallinity
Faraday Discussions of the Chemical Society, 1985The relationship between low-molar-mass or monomeric liquid crystals and polymeric liquid crystals is explored by examining the historical development of experimental and theoretical aspects of the latter materials. Polymeric liquid crystals are initially contrasted with conventional, non-mesogenic, flexible polymer chains (random coils), and then ...
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Crystallinity and the structure of celluloses
Journal of Polymer Science Part A: General Papers, 1963AbstractObservations on the x‐ray scattering by ball‐milled cellulose and cellulose derivatives, amorphous oligosaccharides, and Fortisan H are reported and an approximate shape is established for the scattering curve of the noncrystalline component of celluloses.
K. J. Heritage +2 more
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Crystalline Plasticity and Structured Deformations
2004The connection between the geometrical changes at small length scales in single crystals and their macroscopic response has been the subject of extensive experimental studies. In (Deseri and Owen (2000)), experimental evidence that points to a connection between hardening behavior of single crystals undergoing single slip and changes in the separation ...
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