Electric cables are normally installed on the assumption of a safe working life of at least 20 years. Changes in the insulating material take place with the passing of time and these changes, which may eventually result in an electrical breakdown, are…[ 続きを読む ]

It’s time to upgrade maintenance practices for vertical vessels. Like any routine maintenance, inspecting, removing and replacing refractory in vertical vessels places a costly burden on facilities in terms of downtime and lost productivity. One of the main r…[ 続きを読む ]

Polyvinyl chloride (PVC) has become one of the dominant construction materials for sewer systems over the past decades, as a result of its reputed merits. However, since PVC sewer pipes have operated for decades in a hostile environment, concern over their longevity has been lately raised by…[ 続きを読む ]

Zalto is widely considered the gold standard of glassware by wine connoisseurs and professionals alike. It is made of mouth blown, nonleaded crystal; it’s incredibly light; and…[ 続きを読む ]

This paper deals with the determination of the stress distribution at the fillet of a ANSI B16.5 flanges attached internally to a hollow cylinder. A load parallel to the axis of the cylinder and of variable eccentricity acts on a bearing plate which rests on the flange. The strains are…[ 続きを読む ]

Aluminum alloys are increasingly being used in a broad spectrum of load-bearing applications such as lightweight structures, light rail, bridge decks, marine crafts, and off-shore platforms. A major concern in the design of land-based and marine aluminum structures is…[ 続きを読む ]

Lignin is a natural broad-spectrum sun blocker due to its UV-absorbing functional groups, e.g., phenol units. UV absorbers can protect materials such as paints and plastic from sun damage.

Richard Venditti, North Carolina State University, Raleigh, USA, and colleagues have…[ 続きを読む ]

When it comes to glassware, the sexier vessels — a coupe, a flute, a wineglass — seem to get all the glory. But a simple glass cup (which can be just as appropriate for juice, wine, iced coffee, or yes, a G&T) gets used more than any of those options — and is just as worthy of praise. Whether you’re in the market…[ 続きを読む ]