Results 271 to 280 of about 44,923 (293)
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Chain‐folding in polyethylene lamellar structure
Polymer International, 1992AbstractThe nature of the chain‐folding in polyethylene lamellar structure from the melt has been studied. Permanganic etching was used to reveal the morphology by selective removal of material from the surface of the specimen. This was done to prepare the sample for transmission electron microscopy.
I. A. M. Al‐Raheil, Ali M. Okaz
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Elastoplastic instabilities of lamellar structures
2015The present work investigates local bucking in layered structures comprising a thin elastic layer (lamella) embedded in a comparatively thick matrix under in-layer-plane loading. The matrix is considered to be in an elastoplastic state at the initiation of the lamella-buckling.
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Lamellar Structure of Potash-Soda Felspars
Nature, 1939IN an extremely interesting paper, Ito1 has recently described the results of an X-ray examination of a Korean moonstone which he assumes to be similar to a specimen (described by E. Spencer2) containing approximately equal amounts of potash felspar and soda felspar, showing a blue schiller, and resembling sanidine in its glass-clear appearance and in ...
S. H. CHAO, W. H. TAYLOR
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STRUCTURAL AND FUNCTIONAL CHARACTERISTICS OF LAMELLAR MACULAR HOLES
Retina, 2019Purpose: Lamellar macular holes (LMHs) can been subdivided into tractional and degenerative subtypes. This cross-sectional cohort study compared structural and functional characteristics in these subtypes hypothesizing that tractional LMH has a higher prevalence of vitreopapillary adhesion and tangential traction (macular ...
Justin H, Nguyen +3 more
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Atomic growth mechanisms for lamellar structures
Proceedings, annual meeting, Electron Microscopy Society of America, 1988The pearlite transformation product is composed of alternating plates resulting from a eutectoid transformation whereas the discontinuous or cellular transformation is also composed of alternating plates due to relief of supersaturation. This paper will describe the relationship between the growth interface and interlamellar structure that results from
R.W. Fonda, L.R. Black, G.J. Shiflet
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Non-lamellar lipid liquid crystalline structures at interfaces
Advances in Colloid and Interface Science, 2015The self-assembly of lipids leads to the formation of a rich variety of nano-structures, not only restricted to lipid bilayers, but also encompassing non-lamellar liquid crystalline structures, such as cubic, hexagonal, and sponge phases. These non-lamellar phases have been increasingly recognized as important for living systems, both in terms of ...
Debby P. Chang +5 more
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Omnidirectional elastic band gap in finite lamellar structures
Physical Review E, 2002This paper presents a comprehensive theoretical analysis of the occurrence of omnidirectional reflection in one-dimensional phononic crystal structures. We discuss the conditions for a one-dimensional layered structure, made of elastic materials, to exhibit total reflection of acoustic incident waves in a given frequency range, for all incident angles ...
D, Bria, B, Djafari-Rouhani
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Lamellar structures in low-calcium orthopyroxenes
Contributions to Mineralogy and Petrology, 1974Clinoenstatite lamellae are found to be distributed in three distinct patterns that define three microstructural types. There are regions of the crystal devoid of lamellae and these correspond to ordered or O-orthopyroxene. When the lamellae are present but not in any periodic arrangement, disordered or D-orthopyroxene is identified. In some areas, the
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Structure and function of lamellar bone.
Clinical rheumatology, 1994A comparative scanning and transmission electron microscopy study was carried out on human compact lamellar bone. The results obtained fully confirm our previous findings which show that bony lamellae are not made up of parallel-arranged collagen fibers, as classically maintained.
MAROTTI, Gastone +2 more
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Bio-Inspired Lamellar Structures
ACADIA proceedings, 2019Yasaman Yavaribajestani +1 more
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