Results 261 to 270 of about 94,140 (312)
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Morphology of fractured domains in brittle fracture
Metallurgical and Materials Transactions A, 2004We propose a thermodynamic approach, allowing one to determine the shape of the intensively fractured zones (IFZs), simultaneously with the distribution of stress and strain within the IFZ appearing in brittle fracture. The approach combines Gibbs’ variational paradigm of the theory of heterogeneous systems with Griffith’s variational paradigm of the ...
M. A. Grinfeld, T. W. Wright
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Fracture edge features of diaphyseal clavicular fractures: a morphologic study
Journal of Shoulder and Elbow Surgery, 2023Previous researchers used transverse fractures centered over the midpoint of the clavicle as the diaphyseal clavicular fracture models. However, as a result of shear stress concentration in sigmoid-shaped structures, most diaphyseal clavicular fractures have coronal fracture edges and are located distal to the midpoint. The purpose of this study was to
Yi-Hsuan Chao +2 more
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Morphology of direct and indirect rib fractures
International Journal of Legal Medicine, 2020Rib fractures are a common finding in legal medicine and information on the impact mechanism is relevant for trauma reconstruction. This study focuses on morphological characteristics of rib fractures resulting from direct or indirect force. Fresh human ribs (n = 312) were divided into two groups and broken through local force (direct) and bending ...
Kissling S, Hausmann R
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Fracture line morphology of complex proximal humeral fractures
Journal of Shoulder and Elbow Surgery, 2017The aim of this study was to assess proximal humeral fracture patterns using 3-dimensional computed tomography images and relate them to the normal osseous landmarks and soft-tissue attachments.Forty-eight 3-dimensional computed tomography scans of proximal humeral fractures were retrospectively collected, and the fractures were transcribed onto ...
Afsana P. Hasan +3 more
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The fracture toughness and fracture morphology of polyester resins
Journal of Materials Science, 1976The change in fracture toughness of an orthophthalate based medium reactivity polyester resin with change in resin flexibility, catalyst content, cure temperature and liquid environment, has been investigated. Various specimen geometries including simple double cantilever beam and tapered double cantilever beam have been used and the results obtained ...
A. Christiansen, J. B. Shortall
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Study of the fracture toughness and fracture morphology of polybenzimidazole
Journal of Materials Science, 1992Polybenzimidazole (PBI) is a relatively new polymeric material exhibiting unusual properties that are attributable to its aromatic-heterocyclic monomer structure. Owing to its high strength, stiffness and excellent stability in hostile chemical and thermal environments, PBI is being used increasingly in critical applications. As a result, understanding
J. F. Groves +2 more
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The fracture morphology of fast unstable fracture in polycarbonate
Journal of Materials Science, 1991Fracture tests were conducted on polycarbonate using compact tension specimens. With the aid of fractographic analysis techniques the effects of various geometric and test parameters on the fracture-surface morphology were studied. Four distinct regions were identified on the fracture surface: (i) initiation region, (ii) mist region, (iii) mirror ...
C. M. Agrawal, G. W. Pearsall
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Freeze-fracture morphology of nuclear pockets
Virchows Archiv B Cell Pathology Including Molecular Pathology, 1991Nuclear pockets (NP) are found in numerous human tumours and in certain non-neoplastic cells. This study concerns the structure of NP in cells from two malignant rhabdoid tumours, one embryonal rhabdomyosarcoma, two centroblastic/centrocytic lymphomas, one centrocytic lymphoma and one Ki-1 lymphoma, as well as in normal neutrophils.
E, Kaiserling, H, Wolburg
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The influence of age on the morphology of trochanteric fracture
Archives of Orthopaedic and Traumatic Surgery, 1984A series of 127 trochanteric femoral fractures was analyzed with respect to fracture type, age, and bone quality (osteoporosis). There was a continuous decrease in bone quantity (measured as femoral score) with age and a direct relation between bone quality and the severity of the pattern of the trochanteric fracture. The skeletal ageing process starts
B S, Zain Elabdien +2 more
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Morphology and Treatment of Occipital Condyle Fractures
Spine, 1988During the last 4 years, the authors have had six cases of occipital condyle fractures, a very rare injury. Medline search yielded reports of 20 occipital condyle fractures in the literature. Of the six treated by the authors, one death (by pontine hemorrhage) occurred in a patient with a displaced avulsion fracture on the right occipital condyle (Type
P A, Anderson, P X, Montesano
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