Results 211 to 220 of about 43,320 (260)
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Diameter of haemoglobin S fibres in sickled cells
Nature, 1978SICKLE-CELL disease is a manifestation of the assembly of the Hb S variant of human haemoglobin into fibres that alter erythrocyte morphology. Recent studies have focused on two distinct forms of the fibres—a 6-stranded form composed of stacked rings of six Hb S molecules1,2 and a more complex form3–5 which we have recently studied by three-dimensional
R H, Crepeau +3 more
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Measurement of collagen‐fibre diameter in human skin
Journal of Cutaneous Pathology, 1984A method for the measurement of collagen fibre diameter in human skin is described. Photographic reduction of electron micrograph negatives onto positive transparency film allows the use of a Quantimet 720 image analysis system for relatively rapid determination of mean collagen fibre diameter based upon the mean cross‐sectional area of a single ...
S P, Barton, R, Marks
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Influence of Fibre Diameter on the Microstructure and the Piezoelectric Properties of PZT-Fibres
Advances in Science and Technology, 2006Lead zirconate titanate (PZT) fibres with diameters between 70 and 300 μm have been extruded and sintered at 1200°C in a PbO-enriched atmosphere. Subsequently, the influence of fibre diameter on the microstructure (porosity and grain size) was investigated.
Heiber, J. +3 more
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The development of composite carbon fibres of large diameter?macro fibres
Journal of Materials Science, 1974This paper describes the development of a process for manufacturing carbon fibres of larger diameter than those normally available from the “RAE process” [1] or other routes which have so far been described (e.g. the hot-stretching of pitch [2] or cellulose-based [3] fibres).
G. A. Cooper +3 more
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A 24mm diameter fibre positioner for spectroscopic surveys
SPIE Proceedings, 2016One of the big research topics in modern cosmology is the mystery of dark Energy. To unveil the secret, cosmologists want to measure precisely the evolution of large scale structures in the universe. One way of doing so is to measure the 3D location of a high number of galaxies. By measuring the redshift of a galaxy, it is possible to find its distance.
Hörler Philipp +4 more
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Influence of nutrition, fibre diameter and fibre length on the fibre curvature of cashmere
Australian Journal of Experimental Agriculture, 2003Raw and dehaired Australian and Chinese Liaoning cashmere were evaluated for cashmere fibre curvature, cashmere fibre length, resistance to compression, and mean fibre diameter. Tested cashmere originated from commercial lots, and previous experimental samples. In Australian goats, cashmere fibre curvature was dependent on nutrition.
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Increase in Diameter of Muscle Fibres in the Foetal Pig
British Veterinary Journal, 1972SUMMARY Skeletal muscle fibres from foetal pigs between 45 days’ gestation and 7 days after birth were examined and their growth in diameter measured by light microscopy of paraffin sections. Three developmental stages are described: A. Development of large myotubes. Up to day 55. B.
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22—AN ELECTRONIC FIBRE-DIAMETER METER
The Journal of The Textile Institute, 1977A description is given of a new instrument for rapidly and accurately determining the mean diameter of fibres. Its method of operation can be quickly learned, and the results are substantially operator-independent.
R. Turner +2 more
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The pigmented‐rat optic nerve: Fibre count and fibre diameter spectrum
Journal of Comparative Neurology, 1977AbstractA well distributed electron microscopic sample of 52,000 fibres from the pigmented rat optic nerve cross section indicates a total count of 120,000±1,600 (S. E. M.) fibres ranging from 0.437μ to 5.2μ in diameter. The fibre diameter spectrum is essentially unimodal with a peak at 1.0μ with a well developed “tail”.
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On the relation between fibre diameter and conduction velocity in myelinated nerve fibres
Proceedings of the Royal Society of London. Series B. Biological Sciences, 1982Abstract Myelinated fibres less than 1 μm in diameter are rare in the peripheral nervous system; but fibres down to 0.2 μm in diameter exist in the central nervous system. These observations are consistent with Rushton’s theory on the effects of fibre size on conduction in myelinated nerve when the different processes of myelination ...
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