mixtures of mineral aggregate and modified sulfur, wherein the modified sulfur functions as a binder, are termed sulfur concretes or sulfur mortars depending on the form of the mineral aggregate. molten sulfur reacted with olefinic additive, at 130-140 ºc, and then mixed with preheated filler and aggregates. sulfur mortar samples were prepared by mixing 32 % molten sulfur, 10 % filler and 58 % ...

Abstract This paper aims at the optimal design of a system small solid barrier-type stone dams in semi-realistic study case, determining number, location and height borrow-pit (BP)'s for benefit maximization cost minimization objectives: (a) maximum flood protection, (b) underlying aquifers' artificial recharge, (c) minimum dams' construction (d) stonework transportation cost. The simplified co...

Firms continue to focus more attention on how to make use of the Internet for commercial purposes. Traditional firms are integrating their existing market channels and their online presence, into what is often called click-and-mortar e-commerce. In this paper we will discuss how click-and-mortar e-commerce generates synergies and customer value, and what implications it has for the type of cust...

Habitat fragmentation is the primary cause of the loss of biodiversity and ecosystem services, but its underlying processes and mechanisms remain poorly understood. Studies of islands and insular terrestrial habitats are essential for improving our understanding of habitat fragmentation. We argue that the Three-Gorges Dam, the largest that humans have ever created, presents a unique grand-scale...

This paper studies the addition of fibers from end-of-life tires to commercial mortar mixtures. Two different types of mortar, one lime-plastic and other cement-fluid, are mixed with different percentage of fibers ranging from 0% to 1%. The changes in bulk density, consistency, compressive and flexural strength, dynamic Young modulus and water absorption are studied. According to the results, c...

The launch of B2B exchanges in brick and mortar industries has inspired the study of the potential impacts on business models of this shift from offline into online trade. Among market parties, intermediaries form a very interesting group, since electronic marketplaces could be seen as their direct competitors. We argue that the emergence of electronic marketplaces both creates opportunities an...

The mortar element method is an optimal domain decomposition method for the approximation of partial differential equations on non-matching grids. There already exists applications of the mortar method to Navier-Stokes, elasticity, and Maxwell problems. The aim of this paper is to provide an extension of the mortar method to plates and shells problems. We first recall the Discrete Kirchhoff Tri...

It is previously known that the one dimensional mortar nite element projection is stable in the L 2 norm, provided that the ratio of any two neighboring mesh intervals is uniformly bounded, but with the constant in the bound depending on the maximum value of that ratio. In this paper, we show that this projection is stable in the L 2 norm, independently of the properties of the nonmortar mesh. ...

Abstract Downstream sediment transport in river systems is impacted by anthropogenic modifications, such as dams or levees. This study used detrital zircon U-Pb geochronology and mixture modeling to investigate the effects of on provenance signatures along upper Missouri Yellowstone Rivers. The River longest dam-free North America, while has several major reservoir-forming dams. We present 4777...