Results 301 to 310 of about 101,481 (337)
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Brittle-ductile transition: semi-brittle behavior
Tectonophysics, 1989Abstract In central British Columbia mesoscopic and microscopic deformation mechanisms within metamorphic rocks ranging from greenschist facies through upper amphibolite facies have been examined to evaluate the applicability of single mechanism flow laws at different crustal levels.
John V. Ross, Peter D. Lewis
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Dermatologic Clinics, 1985
In this review an attempt has been made to clarify the etiology, pathogenesis, and therapy of brittle fingernails. Hopefully, this discussion will enable the clinician to better understand, evaluate and manage patients with this disorder.
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In this review an attempt has been made to clarify the etiology, pathogenesis, and therapy of brittle fingernails. Hopefully, this discussion will enable the clinician to better understand, evaluate and manage patients with this disorder.
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Applied Mathematics & Optimization, 2001
In this paper a two-dimensional model for brittle thin films is obtained from a three-dimensional fracture model for elastic material. Using methods of \(\Gamma\)-convergence with adaptations to the spaces of special functions of bounded variation and to the thin films framework the authors find the limit effective energy as the thickness of the ...
Braides, A., Fonseca, I.
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In this paper a two-dimensional model for brittle thin films is obtained from a three-dimensional fracture model for elastic material. Using methods of \(\Gamma\)-convergence with adaptations to the spaces of special functions of bounded variation and to the thin films framework the authors find the limit effective energy as the thickness of the ...
Braides, A., Fonseca, I.
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Brittle and Quasi-Brittle Materials
2009The optimization problems considered in this section consist in finding the shape and the thickness distribution of axisymmetric shells in the framework of membrane theory, loaded by fixed statical forces in such a way that the cost functional reaches a maximum, while satisfying some strength mechanics constraints.
N. V. Banichuk, Pekka Neittaanmäki
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How brittle is brittle fracture?
Engineering Fracture Mechanics, 1979Abstract A critical survey is given of what appear to be the basics of the field of fracture mechanics. The survey is certainly not exhaustive and is approached from the viewpoint and with the pre-suppositions of a “materials” as opposed to a “mechanics” person.
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Diabetes, 1977
In eight brittle diabetics the insulin requirement increased during successful pregnancies from 35 to 64 U ./day (in 29 stable severe diabetics from 53 to 78 U./day). The within-day glycemie excursions were calculated as the mean of the three differences between four time points: fasting, one hour after breakfast, two hours after breakfast, and two ...
A, Lev-Ran, J A, Goldman
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In eight brittle diabetics the insulin requirement increased during successful pregnancies from 35 to 64 U ./day (in 29 stable severe diabetics from 53 to 78 U./day). The within-day glycemie excursions were calculated as the mean of the three differences between four time points: fasting, one hour after breakfast, two hours after breakfast, and two ...
A, Lev-Ran, J A, Goldman
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Science, 2019
Thin films of flawless amorphous alumina are ductile at room ...
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Thin films of flawless amorphous alumina are ductile at room ...
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Science Translational Medicine, 2017
Decreased WNT1 signaling weakens bones but is partially reversed by blocking the WNT1 inhibitory regulator sclerostin.
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Decreased WNT1 signaling weakens bones but is partially reversed by blocking the WNT1 inhibitory regulator sclerostin.
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Modelling brittle and semi-brittle fracture processes
Materials Science and Engineering: A, 2001Recent advances in the microscopic modelling of fracture processes are summarised and discussed in this paper. Examples are taken from ab-initio simulations and empirical atomistic modelling of brittle fracture which show that the production of metastable fracture surfaces or directional cleavage anisotropy are readily anticipated consequences of the ...
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Brittle Fracture Initiation in Local Brittle Zones
1991The initiation of brittle fracture within an idealised linear local brittle zone (LBZ) has been studied by comparing the toughness properties of the CGHAZ of an EB weld with specimens heat treated to represent the microstructure of the CGHAZ in bulk. Comparison of Ju, Kmax and δu values shows that each reflects different aspects of the failure process ...
P. Woollin, J. F. Knott
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