Technical aspects of composite arterial grafting with double skeleton-ized internal thoracic arteries. Bilateral skeleton-ised internal thoracic artery graftings in off-pump coronary artery bypass: early result of Y versus in situ grafts. results of coronary grafting using ultrasonically skeletonized internal thoracic arteries. We read with great interest the recent review from Dr. Ali and cowo...

A comparison of 14 currently applicable wood harvesting systems was assessed with respect to ergonomic point of view. For this purpose, the research method, based on the Hodges-Lehmann rule and the integrated work-severity rate of single machinery, was developed for ergonomic evaluation of cut-to-length, tree-length and full-tree harvesting systems. Altogether, about 130 different parameters of...

Energy harvesting, which offers a never-ending energy supply, has emerged as a prominent technology to prolong the lifetime and reduce costs for the battery-powered wireless sensor networks. However, how to improve the energy efficiency while guaranteeing the quality of service (QoS) for energy harvesting based wireless sensor networks is still an open problem. In this paper, we develop statist...

BACKGROUND The saphenous vein is an important conduit for coronary artery bypass grafting. Wound complications from traditional open vein harvesting occur often. Minimally invasive endoscopic saphenous vein harvesting may decrease wound complications. Vein quality may be an issue with endoscopic harvesting. METHODS We reviewed 568 patients who had bypass grafting and saphenous vein harvesting...

Experiments 1 and 2 compared, with a single-stimulus procedure, the discrimination of filled and empty intervals in both auditory and visual modalities. In Experiment 1, in which intervals were about 250 msec, the discrimination was superior with empty intervals in both modalities. In Experiment 2, with intervals lasting about 50 msec, empty intervals showed superior performance with visual sig...

SOME FACTORS INFLUENCING THE EFFECTIVE AUDITORY INTENSIVE DIFFERENCE LIMEN

We analyse the effect of harvesting in a resource dependent age structured population model, deriving the conditions for the existence of a stable steady state as a function of fertility coefficients, harvesting mortality and carrying capacity of the resources. Under the effect of proportional harvest, we give a sufficient condition for a population to extinguish, and we show that the magnitude...

Energy is everywhere in the environment surrounding us i.e. it is available in the form of thermal energy, light (solar) energy, wind energy, and mechanical energy etc. However, the energy from these sources is often found in such minute quantities that it cannot supply adequate power for any viable purpose. In fact, it has not been possible to capture such energy sufficiently to perform any us...