Now showing items 1-10 of 2049
Stiffness Evolution of Granular Materials Stabilized with Foamed Bitumen and Cement
From the literature, it is possible to find two trends regarding the stiffness evolution of foamed bitumen stabilized-recycled mixtures. The first trend indicates that once the foamed bitumen mix reaches a constant value ...
Use of the dynamic stiffness method to interpret experimental data from a nonlinear system
The interpretation of experimental data from nonlinear structures is challenging, primarily because of dependency on types and levels of excitation, and coupling issues with test equipment. In this paper, the use of the ...
Assessment of longitudinal myocardial stiffness is not enough to evaluate diastolic function.
(Japanese Circulation Soc, 2013-02)
In the 1960 s, the first studies of diastolic function appeared and from there the interest in this phase of the cardiac cycle increased. Such interest has continued to the present day, when systole and diastole are equally ...
Guiding cell migration with microscale stiffness patterns and undulated surfaces
By placing stiff structures under soft materials, prior studies have demonstrated that cells sense and prefer to position themselves over the stiff structures. However, an understanding of how cells migrate on such surfaces ...
Passive vibration isolation using axially loaded curved beams
A nonlinear spring element of a vibration isolator should ideally possess high static and low dynamic stiffness. A buckled beam may be a good candidate to fulfil this requirement provided its internal resonance frequencies ...
Stiffness of lipid monolayers with phase coexistence
(American Chemical Society, 2013-08)
The surface dilational modulus (or compressibility modulus) has been previously studied for monolayers composed of pure materials, where a jump in this modulus was related with the onset of percolation as a result of the ...
Alterations in myocardial collagen content affect rat papillary muscle function
(Amer Physiological Soc, 2000-10-01)
We investigated the influence of myocardial collagen volume fraction (CVF, %) and hydroxyproline concentration (mu g/mg) on rat papillary muscle function. Collagen excess was obtained in 10 rats with unilateral renal ...
Experimental Investigation of a Two-Stage Nonlinear Vibration Isolation System with High- Static-Low-Dynamic Stiffness
A novel design of a two-stage nonlinear vibration isolation system, with each stage having a high-static-low-dynamic stiffness (HSLDS), is studied experimentally in this paper. The positive stiffness in each stage is ...
Response to Cold Pressor Test Predicts Long-Term Changes in Pulse Wave Velocity in Men
(Oxford Univ PressOxfordInglaterra, 2014)