The purpose of the project was to demonstrate and explain the acoustic effects of side branch and parallel vents in individual real ears. It was shown that parallel and side branch vents produce similar low frequency filtering effects and vent-associated reactance resonances. However, when the input system incorporates a side branch vent the sound pressure produced in the ear canal at frequenci...

Percutaneous revascularization as an alternative to surgery in the management of peripheral vascular disease was first described in 1964 but gained little acceptance.' In 1974 the development of a doublelumen balloon catheter by Gruntzig and others made the technique a much more practical and effective one that has subsequently gained widespread acceptance.2 At first it was used in the peripher...

To gain a better understanding of the effects of spatial structure on patterns of neighbourhood competition among hardwood trees, the three-dimensional extension of primary branches was surveyed for ten community-grown Castanea crenata (Fagaceae) trees with respect to the positioning of neighbouring branches and the slope of the forest floor. There were significantly more branches extending tow...

The approach to a chronic total occlusion (CTO) still remains one of the most technical challenges in percutaneous coronary intervention (PCI). CTO lesions with a blunt entry point, calcification, and failure of a previous approach, are the independent predictors of CTO-PCI failure. Here we report a successful antegrade approach for reattempted CTO-PCI of a left anterior descending artery (LAD)...

Complex piping systems with multiple side-branches in close proximity are very liable to flow-induced acoustic resonances. This is demonstrated by means of model tests of two piping systems, one with a single side-branch the second containing two side-branches. The general acoustic response of these two systems is studied as the flow velocity in the main pipe is increased. The influence of the ...

This lecture talked about two examples of using FIRST to explore protein flexibility: ROCK [1, 2] and FRODA [3]. 1 The ROCK Algorithm 1.1 Terminology Ring: A closed loop of bonds in which any two atoms are connected by two distinct paths. Interlocked rings: Two rings that share common bond(s). Ring cluster: A collection of rings that are interlocked with one another. Side branches: All atoms th...

We report on a case of ischemic dysfunction of the sinus node as a complication after percutaneous transluminal coronary angioplasty of the distal left circumflex artery. After local thrombolytic therapy in the sinus node artery, sinus node arterial flow was re-established and sinus node function normalized over the period of a week. Our experience suggests that immediate reperfusion of a total...