Collagen fibers play an important role in the biomechanics of the blood vessel wall. The objective of this study was to determine the 3D microstructure of collagen fibers in the media and adventitia of coronary arteries. We present a novel optimal angle consistence algorithm to reform image slices in the visualization and analysis of 3D collagen images. 3D geometry was reconstructed from reslic...

The presented study compares three alternative straight-line approximations of the longitudinal road-profile power spectral density (PSD). The one straight line and two and three split straight-line approximations were analyzed. The minimizing of the root-meansquared error (RMSE) was used as criteria of goodness of fit for the approximation models. The statistics of the PSD approximation model ...

It is noteworthy to explore potential measures for further reducing the aerodynamic drag and noise of high-speed pantographs. This paper proposes a method introducing spanwise waviness into upper lower arms. The improved delayed detached eddy simulation (IDDES) Ffowcs Williams Hawkings (FW-H) equation are used flow field sound propagation calculation, respectively. effects wavelength, wave ampl...

In this paper, fiber waviness, as one of the most frequently occurring defects in reinforced composites, is numerically investigated with regard to formation residual stresses metal laminates. Furthermore, prediction stress state thickness direction by means simulated hole drilling method studied. To regard, a global-local finite element analysis based on submodel technique presented. The essen...

this article deals with the buckling analysis of perfectly bonded cross-ply laminated composite plates reinforced by wavy carbon nanotubes (cnts) under in-plane loads using element free galerkin (efg) method based on first-order shear deformation theory (fsdt). the wavy single-walled cnts and poly-co-vinylene are used for the fibers and the matrix, respectively. the cnt fibers are distributed i...

Thick-section composites are commonly used in fixed-wing and rotary-wing fatigue-critical, flightcritical components and structure. Manufacturing imperfections in thick composite structures, such as fiber waviness and porosity/voids, remain a serious problem that leads to significant component scrap rates in production. Such defects usually result in degraded strength and fatigue performance [1...

Strut-based lattice structures produced by powder bed fusion are prone to characteristic manufacturing defects that alter both their form and surface texture. Most studies in the literature focus on a subset of commonly observed defects, typically radius variation strut waviness; remain relatively unexplored. Furthermore, there remains need for development general finite element modelling frame...

In this double-blind, placebo-controlled clinical study, we investigated the efficacy of specific bioactive collagen peptides (BCP) on the cellulite treatment of normal and overweight women. In total, 105 women aged 24-50 years with moderate cellulite were randomized to orally receive a daily dosage of 2.5 g BCP or a placebo over 6 months. The degree of cellulite was evaluated before starting t...