نتایج جستجو برای: non aging materials

تعداد نتایج: 1798183  

Journal: :Journal of Mathematical Analysis and Applications 1977

Journal: :Nature materials 2005
Predrag Bursac Guillaume Lenormand Ben Fabry Madavi Oliver David A Weitz Virgile Viasnoff James P Butler Jeffrey J Fredberg

The cytoskeleton (CSK) is a crowded network of structural proteins that stabilizes cell shape and drives cell motions. Recent studies on the dynamics of the CSK have established that a wide variety of cell types exhibit rheology in which responses are not tied to any particular relaxation times and are thus scale-free. Scale-free rheology is often found in a class of materials called soft glass...

Journal: :Journal of Engineering Materials and Technology 1989

Khabiri Nemati, Rogheyeh, Poor Reza, Abolghasem,

Objectives: In this paper, aging with its different dimensions is discussed. The characteristics of elderly's life in relation to individual, social, and changes meet aging together with attitudes toward it and major components of elderly are explained. Disease and burden of disease of aging as a central to the areas of Health and Health Economics will be emphasized. The influential factors on ...

Journal: :Clinical Interventions in Aging 2008
Fredric S Brandt Alex Cazzaniga

Time affects facial aging by producing cellular and anatomical changes resulting in the consequential loss of soft tissue volume. With the advent of new technologies, the physician has the opportunity of addressing these changes with the utilization of dermal fillers. Hyaluronic acid (HA) dermal fillers are the most popular, non-permanent injectable materials available to physicians today for t...

Journal: :Chemical communications 2016
Tamoghna Mitra Rupesh S Bhavsar Dave J Adams Peter M Budd Andrew I Cooper

High-free-volume glassy polymers, such as polymers of intrinsic microporosity (PIMs) and poly(trimethylsilylpropyne), have attracted attention as membrane materials due to their high permeability. However, loss of free volume over time, or aging, limits their applicability. Introduction of a secondary filler phase can reduce this aging but either cost or instability rules out scale up for many ...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2008
Yogesh M Joshi G Ranjith K Reddy

We study the aging behavior of aqueous laponite suspension, a model soft glassy material, in creep. We observe that the viscoelastic behavior is time dependent and is strongly influenced by the deformation field; the effect is known to arise due to aging and rejuvenation. We show that irrespective of the strength of the deformation field (shear stress) and age, when the imposed time scale is no...

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