Although the favored glide planes in hexagonal close-packed Zr are prismatic, screw dislocations can escape their habit plane to glide in either pyramidal or basal planes. Using ab initio calculations within the nudged elastic band method, we show that, surprisingly, both events share the same thermally activated process with an unusual conservative motion of the prismatic stacking fault perpen...

In this contribution towards creating interactive environments for garment design and simulation, we present a powerful mechanically based cloth simulation system. It is based on an optimized way to compute elastic forces between vertices of an irregular triangle mesh, which combines the precision of elasticity modelisation with the speed of a simple spring-mass particle system. Efficient numer...

A patient who visited our department after job relocation was reexamined, and a marked discrepancy was found in mandibular position between centric occlusion and centric relation. Although the patient was originally scheduled to undergo orthodontic treatment only, the results of comprehensive tests indicated that surgery would be needed to resolve this discrepancy. Surgery was performed with th...

I nvisalign* treatment of dental Class II malocclusions in adolescents and young adults is not commonly attempted, even by orthodontists who have significant experience with aligners. Furthermore, the need for auxiliaries such as Class II correctors or elastics makes the technique less appealing to many clinicians. As this article shows, however, there are other successful ways to treat Class I...