in this paper shear behavior of two calcareous sands having different physical properties areinvestigated using drained and undrained triaxial tests. the investigated sands are obtained from two differentzones located in persian gulf, kish island and tonbak region. analysis based on energy aspects show thatfriction angle in these soils, having crushable particles, is formed of three components:...

Abstract The paper presents a study on woven fabrics made of helical auxetic yarns (HAYs) and their key factors Poisson’s ratio under tension. work aims to create evaluate with optimal parameters for achieving better auxeticity including weave structure, wrapping angle the yarn, thickness yarn properties warp yarn. maximum negative (NPR) fabric can be achieved as low -2.92 experiments. Then, nu...

Although successful communication is at the heart of the clinical consultation, communication between Aboriginal patients and practitioners such as doctors, nurses and allied health professionals, continues to be problematic and is arguably the biggest barrier to the delivery of successful health care to Aboriginal people. This paper presents an overarching framework for practitioners to help t...

This paper presents thermoforming experiments and FE simulations of a commingled glass-PP woven composite on a double dome geometry, with the aim of assessing the correspondence of predicted and experimental shear angles. Large local deformations especially in-plane shear, i.e. relative rotation between the two yarn families – occur when draping a textile on a three dimensional part and eventua...

In This Issue In This Issue Saying NO to muscular dystrophy ccording to the prevailing model for Duchenne muscular dystrophy (DMD) pathogenesis, a lack of dystrophin protein makes muscle cells susceptible to mechanical damage, leading to muscle breakdown. On page 123, Wehling et al. suggest that the major damage in DMD may actually be caused by a secondary consequence of dystrophin loss: destru...

Background. Silver has been used for years in the medical field due to its antibacterial efficacy. Silver has been applied topically to fabrics as an antimicrobial agent but the process lacks efficacy because the silver percent is too low. A new yarn which can be used to weave or knit fabrics uses novel technology to extrude the silver into the yarn fibers. This process allows the silver to phy...

Various materials that are used for vascular and heart valve prostheses carry drawbacks: some require anticoagulant drugs or have moderate durability; others are not suitable for endovascular treatment. These prostheses are associated with bacterial infections. A material potentially suitable for prostheses is Dyneema Purity®, made of ultra-high-molecular-weight polyethylene. Dyneema Purity® fi...

Abnormally high levels of spontaneous and mitomycin C or diepoxybutane induced chromosome breakage were observed in lymphocytes from eight out of nine previously undescribed patients clinically diagnosed as having Fanconi's anaemia. The results suggest that the combination of spontaneous and induced chromosome breakage is a good aid in the differential diagnosis and we suggest that increased ch...

Carbon nanotube (CNT) arrays can be drawn into a web and then twisted into threads. These CNT threads contain thousands of carbon nanotubes in their cross-section and can be further composed into yarns consisting of one or more threads. CNT yarns exhibit significant mechanical stiffness and strength and low electrical resistivity. More importantly, CNT yarns exhibit piezoresistance that could b...