Computer monitor recycling: a case study

The total number of computer monitors being scrapped per year worldwide is predicted to rise to 30 million units by the year 2005. Monitors contain significant quantities of lead (in the solder and CRT glass) and polybrominated flame retardants, which are potentially hazardous if released to the environment. A recent study investigated the possibility of cost-effectively recycling monitors     

Mathematical and Scientific Foundations for an Integrative Engineering Curriculum

All fields of engineering, whether chemical, civil, electrical, materials, mechanical, etc., encompass a common body of essential mathematics and science. In the freshman year of Drexels E⁴ program, this common mathematical and scientific foundation is cultivated in the Mathematical and Scientific Foundations of Engineering I, II and III (MSFE I, MSFE II, MSFE III). In an integrated fashion, MSFE I presents the essential calculus, physics and engineering mechanics vital to the freshman engineering student. In the first two quarters, MSFE II presents chemistry with clearly defined engineering applications and significance: in the third quarter, MSFE II presents living systems with the same thrust. Also in the third quarter, MSFE III presents basic circuits and circuit elements, and a brief introduction to electromagnetic theory.     

Development of a new 304L austenitic welding consumable containing tungsten

The transformation behaviour and kinetics of a duplex weld metal, in which tungsten was substituted for molybdenum, have been studied at 600, 700 and 800 C. Despite a low carbon level (0.037wt%), the material exhibited exceptional resistance against intermetallic formation during ageing. The Charpy impact toughness at room temperature was consistently superior compared to a standard molybdenum containing 316 weld metal. The results suggest that suitable development of the tungsten-bearing 304 consumable could lead to significant improvements in weld-metal properties.