Terms and conditions of current drinking water quality standards, including reducing the maximum arsenic concentration from 50 μgl-1 to 10 μgl-1 and predicted stricter standards in future, reveals the necessity for development of new technologies. This study aimed to prepare and evaluate a new nanocomposite membrane using graphene oxide (GO) thin layer to remove arsenic (v) from water. To fabri...

Today, the expansion of the Federation of Automobile racing car increases the competition of Go-kart. Go-kart is one of the best and safest car racing competitions. A history of nearly a century in the world. Go-karts are tiny car that can be controlled with good stability on the road and curved path for drivers bring excitement and exhilaration. Stability and control when crossing the road ben...

today there are different vibration isolators used in industries according to the weight and excitation frequency of the machines which have vibration. one of them is air spring which is in two types: convoluted air spring and membrane air spring. convoluted air springs are used to control vibrations in low frequency (usually lower than 10 hz) and the membrane ones are used in high frequency (u...

Theory i s constrained by the quality and versatility of measurement tools. As such, the development of techniques for measurement is critical to the successful development of theory. This paper presents a technique -the GoINo-go Association Task (GNAT) that joins a family of existing techniques for measuring implicit social cognition generally, with a focus on attitude (evaluation). To expand ...

In mature male snakes and lizards, a distal portion of the nephron is hypertrophied in relation to its appearance in females and immature males. This sexual segment of the male kidney apparently provides seminal fluid that is mixed with sperm and released into the female cloaca during copulation. In this article, we provide the first study at the ultrastructural level of seasonal variation in t...

Lipid adhesion forces can be measured using several experimental techniques, but none of these techniques provide insight on the atomic level. Therefore, we performed extensive nonequilibrium molecular dynamics simulations of a phospholipid membrane in the liquid-crystalline phase out of which individual lipid molecules were pulled. In our method, as an idealization of the experimental setups, ...

Within a fairly short amount of time, the Islamic State of Iraq and Syria (ISIS) has managed to put large swaths of land in Syria and Iraq under their control. To many observers, the sheer speed at which this “state” was established was dumbfounding. To better understand the roots of this organization and its supporters we present a study using data from Twitter. We start by collecting large am...

Abstract. In this paper we elaborate a model to describe some aspects of the human lung considered as a continuous, deformable, medium. To that purpose, we study the asymptotic behavior of a spring-mass system with dissipation. The key feature of our approach is the nature of this dissipation phenomena, which is related here to the flow of a viscous fluid through a dyadic tree of pipes (the bra...

In mature male snakes and lizards, a distal portion of the nephron is hypertrophied in relation to its appearance in females and immature males. This sexual segment of the male kidney apparently provides seminal fluid that is mixed with sperm and released into the female cloaca during copulation. In this article, we provide the first study at the ultrastructural level of seasonal variation in t...