Abstract Toe caps are fundamental components of safety footwear used to prevent injuries, which can be caused by falling objects. They realized exploiting different materials (metal, composites, and polymers) manufacturing processes (stamping, injection molding, compression etc.). However, they have always fulfill the stringent requirements regulations. In addition, in order guarantee ergonomic...

In a modern productive scenario the problem represented by the tons of scraps daily produced in the industrialized countries is often face by recycling. In this paper a contribution to the improvement of the recycling process performed by the disassembly of end-of-life widely diffused goods is proposed. An optimization methodology named “Ant Colony Optimization” (ACO) is proposed as an innovati...

This communication addresses the integration of the supplier capacity in the procurement planning process of a customer within a supply chain. Since this supply chain evolves within an uncertain environment, uncertainties may be due to an ill-known demand (prevision) and to the customer production system (scraps, imprecise processing time...). Thus, we propose a collaborative process where the ...

In this introductory paper, we describe the primary source material studied in this Symposium, namely a set of 21 notebooks and 571 pages of loose sheets and scraps of paper, which, on cross-referencing, have allowed us to reconstruct the sequence, timing and numbers of the laparoscopic cycles planned, attempted and undertaken between 9 January 1969 and 1 August 1978 by Robert Edwards, Patrick ...

Polyethylene (PE) is the most common group of thermoplastic polymers due to its low cost and versatile physical properties. PE is blended with polypropylene (PP) to improve physical properties, such as low temperature impact performance. The composition of these blends is important with regard to performance, and the correct mixing of the pure homopolymers (PE and PP) can eliminate the need for...

The facility was a small former Christian mission hospital now run by the Physicians International charity. Residing about 90 km outside Mogadishu, in the middle of farmland, stray chickens and goats attracted by food scraps were regular visitors. The hospital was equipped with a single operating room containing a still serviceable operating table and an old Boyle anesthesia machine supplied by...

This study attempt to reveal the opportunities for increasing peasant farmers income through snail production in Ghana. The paper stressed that snail production is a crucial means of increasing peasant farmers income, protein supply and utilization of farm scraps in Ghana. This is because, from putting up structure, obtaining snails and feed, caring to harvesting, snail production is very cheap...