نتایج جستجو برای: microstructural aspects

تعداد نتایج: 368024  

2017
Gérald Franz Farid Abed-Meraim Jean-Paul Lorrain Tarak Ben Zineb Xavier Lemoine Marcel Berveiller Farid ABED-MERAIM Jean-Paul LORRAIN Tarak BEN ZINEB Xavier LEMOINE Marcel BERVEILLER Gérald FRANZ

In order to investigate the impact of microstructures and deformation mechanisms on the ductility of materials, the criterion first proposed by Rice is applied to elastic-plastic tangent moduli derived from a large strain micromechanical model combined with a self-consistent scale transition technique. This approach takes into account several microstructural aspects for polycrystalline aggregat...

Journal: :Journal of esthetic dentistry 1996
C Zappala I Shoher P Battaini

CaptekTM (Precious Chemical USA Inc., Apopka, Florida) is a new, innovative development in dental materials. It is a dental alloy that can be defined as a composite material because it is internally composed of two different alloys. CaptekTM is a high gold content alloy (88% by weight) and is used in porcelain-fused-to-metal dental crowns and bridges. Composite metals containing metallic matrix...

1999
D. D. J. Allman

Microstructural study of the C49-TiSi, to C54-TiSi, polymorphic transformation has been performed to elucidate microstructural evolution and possible mechanism of the phase transformation. It has been shown that the nucleation of the C54-TiSi, is heterogeneous, and preferentially takes place at triple grain junctions or grain boundaries. The interphase interfaces between C49 and C54 disilicides...

2017
Sarah Hirsiger Vincent Koppelmans Susan Mérillat Cornelia Erdin Atul Narkhede Adam M. Brickman Lutz Jäncke

Aging is associated with microstructural white matter (WM) changes. WM microstructural characteristics, measured with diffusion tensor imaging (DTI), are different in normal appearing white matter (NAWM) and WM hyperintensities (WMH). It is largely unknown how the microstructural properties of WMH are associated with cognition and if there are regional effects for specific cognitive domains. We...

2007

In this appendix we provide a brief overview of some quantitative aspects of recrystallization, including the experimental techniques used to measure recrystallization, the determination of some of the parameters associated with the annealing processes, and the quantification of some important features of the associated microstructures. We do not attempt to cover the subject matter in detail, b...

2006
Frank Rinn M. J. Boonstra J. F. Rijsdijk C. Sander E. Kegel B. Tjeerdsma H. Militz J. van Acker M. Stevens

Heat treatment of wood is an effective method to improve the dimensional stability and durability against biodegradation. Optimisation of a two-stage heat treatment process at relatively mild conditions (<200°C) and its effect on the anatomical structure of softwoods were investigated by means of a light and scanning electron microscopic analysis. Heat treatment did have an effect on the anatom...

2017
Gérald Franz Farid Abed-Meraim Marcel Berveiller Farid ABED-MERAIM Marcel BERVEILLER Gérald FRANZ

In this paper, we performed a strain localization analysis for single crystals and polycrystals, with the specific aim of establishing a link between the microstructure-related parameters and ductility. To this end, advanced large-strain elastic–plastic single crystal constitutive modeling is adopted, accounting for the key physical mechanisms that are relevant at the microscale, such as disloc...

2016
Peng Xie Bangyong Qin Ganjun Song Yi Zhang Song Cao Jin Yu Jianjiang Wu Jiang Wang Tijiang Zhang Xiaoming Zhang Tian Yu Hong Zheng

Myofascial pain, presented as myofascial trigger points (MTrPs)-related pain, is a common, chronic disease involving skeletal muscle, but its underlying mechanisms have been poorly understood. Previous studies have revealed that chronic pain can induce microstructural abnormalities in the cerebral gray matter. However, it remains unclear whether the brain gray matters of patients with chronic M...

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