Results 281 to 290 of about 36,938 (312)
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On the ultrastructure of cellulose microfibrils
Journal of Polymer Science Part A: General Papers, 1965AbstractStatistical formulae based on generally accepted models for cellulose microfibril structure were developed to calculate the mean length of microfibril segments which do not contain molecular chain‐ends, i.e., “continuous segments.” The calculated length of such “continuous segments” for microfibrils of 2–3 mμ cross section, containing molecules
D. Mejzler, I. Ohad
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A note on microfibrils in polyethylene
Journal of Macromolecular Science, Part B, 1974Abstract The results of diffraction (low-angle scattering of X-rays and electrons) and electron microscopy study show a significant qualitative coincidence in studies of the morphology of oriented polyethylene films obtained from polyethylene single crystal mats. The morphology approximates the ideal description of a microfibrillar structure.
Norimasa Okui +3 more
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Possible Roles of Microfibrils in Elastogenesis
Connective Tissue Research, 1981On examination in the electron microscope elastic tissue is seen to consist of an amorphous component surrounded by microfibrillar components. The exact relationship between these components is unknown, although during development the microfibrils appear before the amorphous material.
I. Prosser, E. G. Cleary, J. C. Fanning
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Hierarchical structure and nanomechanics of collagen microfibrils from the atomistic scale up.
Nano letters (Print), 2011Collagen constitutes one-third of the human proteome, providing mechanical stability, elasticity, and strength to organisms and is the prime construction material in biology.
A. Gautieri +3 more
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The substructure of α-keratin microfibrils
Journal of Ultrastructure Research, 1970The effect of underfocusing on the fine detail observed in the cross section of α -keratin microfibrils is discussed. It is shown that the apparent subdivision of the microfibrils into protofibrillar elements is coincidental with an underfocused granular phase image of similar dimensions and cannot, therefore, be accepted as a genuine structural ...
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Mechanical performance and cellulose microfibrils in wood with high S2 microfibril angles
Journal of Materials Science, 2010Corewood and compression wood, both with high S2 microfibril angles, are the worst parts of the tree most in need of improvement in wood quality. This study focuses on the characteristics of cellulosic reinforcement in wood with high S2 microfibril angles lying between 35° and 60°, as well as the probable influence of these characteristics on wood ...
Ping Xu +3 more
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Physical Chemistry, Chemical Physics - PCCP, 2014
This study reports that the noncentrosymmetry and phase synchronization requirements of the sum frequency generation (SFG) process can be used to distinguish the three-dimensional organization of crystalline cellulose distributed in amorphous matrices ...
Christopher M. Lee +3 more
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This study reports that the noncentrosymmetry and phase synchronization requirements of the sum frequency generation (SFG) process can be used to distinguish the three-dimensional organization of crystalline cellulose distributed in amorphous matrices ...
Christopher M. Lee +3 more
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Analytical Biochemistry, 1998
A method is described for the purification of collagen VI microfibrils and fibrillin-containing microfibrils, respectively. High M(r) microfibril-rich preparations isolated from nuchal ligament by bacterial collagenase digestion and size fractionation were purified by CsCl density gradient centrifugation.
Shuttleworth Ca +2 more
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A method is described for the purification of collagen VI microfibrils and fibrillin-containing microfibrils, respectively. High M(r) microfibril-rich preparations isolated from nuchal ligament by bacterial collagenase digestion and size fractionation were purified by CsCl density gradient centrifugation.
Shuttleworth Ca +2 more
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Journal of Composite Materials, 2010
This investigation deals with the detailed procedure for the extraction of microfibrils from raw bamboo. The microfibrils obtained from raw bamboo were characterized using scanning electron microscope and the average diameter of the fibrils was found to be 10 μm.
N.R. Veena +5 more
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This investigation deals with the detailed procedure for the extraction of microfibrils from raw bamboo. The microfibrils obtained from raw bamboo were characterized using scanning electron microscope and the average diameter of the fibrils was found to be 10 μm.
N.R. Veena +5 more
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Comparison of Rhapidosomes and Asbestos Microfibrils
Science, 1978Rhapidosomes (cylindrical nucleoprotein rods of bacterial origin) show great structural similarity to the microfibrils of chrysotile asbestos when negatively stained and observed with the electron microscope. If the negative stain is omitted, the asbestos retains its structural detail whereas the rhapidosomes appear to be unstructured bodies.
MM Allen, RI Harker, WG Hutchison
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