Under normal circumstances, blood collected from superficial venous capillaries is directed upward and inward via one-way valves into superficial veins. These in turn drain via perforator veins, which pass through muscle fascia into deeper veins buried under the fascia. Leakage in a valve causes retrograde flow back into the vein. Unlike deep veins which are thick-walled and confined by fascia,...

Thixotropic behavior describes a time-dependent rheological characterized by reversible changes. Fresh cementitious materials often require thixotropic to ensure sufficient workability and proper casting without vibration. Non-thixotropic induces loss. Cementitious cannot be considered as an ideal material due cement hydration, which leads irreversible However, in some cases, paste may demonstr...

In this paper an impulse-based method for cloth simulation is presented. The simulation of cloth is required in different application areas like computer animation, virtual reality or computer games. Simulation methods often assume that cloth is an elastic material. With this assumption the simulation can be performed very efficiently using spring forces. The problem is that many textiles canno...

We isolate a forcing which increases the value of δ 2 while preserving ω1 under the assumption that there is a precipitous ideal on ω1 and a measurable cardinal.

Recently, Yang et al. improved Yang and Shieh’s two password authentication schemes to withstand Sun and Yeh’s forgery attacks. However, Kim et al. pointed out that Yang et al.’s improvements still cannot withstand forgery attacks. At the same time, Kim et al. proposed improved methods. In this paper, we shall show that Kim et al.’s improvements also cannot resist the forgery attacks.

Replacing tooth structure that is lost due to trauma to the anterior teeth remains a challenge to the restorative dentist. The restorations must not only be able to withstand masticatory forces and stress but also be esthetically pleasing and acceptable. Materials and techniques have been developed and continue to be developed to improve the outcomes of our services. Although there is still no ...

In this paper an impulse-based method for cloth simulation is presented. The simulation of cloth is required in different application areas like computer animation, virtual reality or computer games. Simulation methods often assume that cloth is an elastic material. With this assumption the simulation can be performed very efficiently using spring forces. The problem is that many textiles canno...

Introduction: Bone tissue has a limited ability for regeneration; critically sized defects cannot self-heal and require medical intervention. Bone tissue engineering (TE) circumvents this issue by growing replacement bone tissue from the patient's own cells inside scaffolds. TE scaffolds are porous constructs that act as a support structure during bone regeneration and helps cells attach and pr...

In order to ascertain the fire resistance performance of recycled aggregate concrete (RAC) components with different concrete compressive strengths, four full-scaled concrete columns were designed and tested under high temperature. Two of the four specimens were constructed by normal concrete with compressive strength ratings of C20 and C30, respectively, while the others were made from recycle...