This paper presents the development of an Intelligent Cavity Layout Design System (ICLDS) for multiple cavity injection moulds. The system is intended to assist mould designers in cavity layout design at concept design stage. The complexities and principles of cavity layout design as well as various dependencies in injection mould design are introduced. The knowledge in cavity layout design is ...

Efficacy of inoculative freezing by ice nuclei in a simulated winter environment was studied in the wood frog (Rana sylvatica), a freeze-tolerant species that overwinters on the forest floor beneath organic detritus. Adult frogs were confined to plastic canisters and cooled to -2 degrees C over 24 hr with their ventral skin in contact with substrate (humic soil hydrated to 40, 10, or 5%, or soi...

This paper discusses the place of rotational moulding in the provision of prosthetic shanks and shank sections. It covers the selection of thermoplastic material, the moulding conditions and their automation in a machine process, and the development of a suitable range of moulds. Also covered is the question of interfacing between the moulded shank sections and other limb components, fatigue st...

Nanoimprint lithography (NIL) has stimulated great interest in both academic research and industrial development due to its high resolution, high throughput and low cost advantages. Though NIL has been demonstrated to be very successful in replicating nanoscale features, it also has its limitations as a general lithography technique. Its fundamental moulding characteristics (i.e. physically dis...

In this research work the effect of barrier angle on tree resistance has been revealed in clear polyester resin. The work to be described studies the possible effect with angular displacement might have the progress of trees in the presence of barrier. The barriers were cast at 0 0 , 45 0 and 90 0 with respect to axis of symmetry of the field. The barrier selected for this study were glass and ...

The influence of cooling rate on the wear and antimicrobial performance of a Cu52Z41Al₇ (at. %) bulk metallic glass (BMG) composite was studied and the results compared to those of the annealed sample (850 °C for 48 h) and to pure copper. The aim of this basic research is to explore the potential use of the material in preventing the spread of infections. The cooling rate is controlled by chang...

VOL. 78-B, No. 3, MAY 1996 pain due to gross degenerative changes (Fig. 1). Mr W. Alexander Law at the London Hospital performed a vitallium mould arthroplasty in October 1949 (Fig. 2). She returned to work after eight months and enjoyed an active lifestyle until her retirement in 1984. When seen in January 1995 she walked with a limp but did not require a walking aid and was free from pain. Th...