منابع مشابه
Hydrodynamic stability without eigenvalues.
Fluid flows that are smooth at low speeds become unstable and then turbulent at higher speeds. This phenomenon has traditionally been investigated by linearizing the equations of flow and testing for unstable eigenvalues of the linearized problem, but the results of such investigations agree poorly in many cases with experiments. Nevertheless, linear effects play a central role in hydrodynamic ...
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Background and Aim: Discoloration is a major concern with regard to the use of tooth-colored restorations. Type of restorative material and surface treatment are believed to play a role in this regard. This study sought to compare the color change of glazed and polished dental porcelain after 30 days of immersion in chlorhexidine (CHX). Materials and Methods: In this in vitro, experimental s...
متن کاملMyoglobin Chemistry and Modifications that Influence (Color and) Color Stability
Myoglobin is a heme-containing protein that participates in aerobic metabolism in antemortem muscle by storing and/or delivering oxygen. Several scholarly reviews have been devoted to the chemical characterization of myoglobin and its effect on meat color (Faustman and Cassens, 1990; Renerre, 2000; Mancini and Hunt, 2005). this review will re-confirm the criticality of heme properties as they r...
متن کاملColor Stability of Two Bulk-Fill Composite Resins
Objective: Bulk-fill composites are a group of composite resins designed for easy and fast filling of large cavities. This study aimed to assess the color stability of bulk-fill composites subjected to xenon radiation and evaluate their color change (&DeltaE) following polymerization. Methods: In this in vitro experimental study, 30 specimens (4mm in height and 8mm in diameter) were fabricat...
متن کاملOn The Eigenvalues Problem for Hemivariational Inequalities: Existence and Stability
This problem can be considered as a nonconvex generalization of the classical variational inequalities of J. L. Lions and G. Stampacchia. For typical examples in connection with mechanics and engineering we refer to the books of Panagiotopoulos [20, 22] and [18]. The techniques used for resolution of hemivariational inequalities are subsequently based on arranging fixed point theorems, Galerkin...
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ژورنال
عنوان ژورنال: Linear Algebra and its Applications
سال: 1988
ISSN: 0024-3795
DOI: 10.1016/0024-3795(88)90238-8