This article deals with the role and place of risk-based thinking in today’s occupational safety health (OSH) systems used by mining companies. A brief survey on modern challenges pressures affecting companies, as well structure supply chains, is given. It demonstrated that, despite all measures actions that are being taken, injuries sector: (a) remain a matter serious concern (b) should be exa...

The extraordinary mechanical properties of spider dragline silk are dependent on the highly repetitive sequences of the component proteins, major ampullate spidroin 1 and 2 (MaSp2 and MaSp2). MaSp sequences are dominated by repetitive modules composed of short amino acid motifs; however, the patterns of motif conservation through evolution and their relevance to silk characteristics are not wel...

The evolution of biological materials is a critical, yet poorly understood, component in the generation of biodiversity. For example, the diversification of spiders is correlated with evolutionary changes in the way they use silk, and the material properties of these fibers, such as strength, toughness, extensibility, and stiffness, have profound effects on ecological function. Here, we examine...

The regularity of spiders orb webs has been considered a fascinating natural wonder by generations of naturalists. Although the majority of spider species build irregular three-dimensional networks, those who have evolved the twodimensional spiral snare have drawn most of the attention (Vollrath, 1988). Even studies conducted on irregular webs are often explicitly devoted to the search of simil...

Amplification mechanisms involved in group cohesion and coordination of several individuals' activities are a major research topic in social arthropod biology. In this paper, we investigate how recruitment processes can be mediated by the use of silk draglines in the case of social spiders. Our intent is to demonstrate how a behavioural feature common to all spider species can induce positive f...