The purpose of the current study was to develop a new tibial tuberosity advancement (TTA) technique, by replacing the original titanium cage with a Ricinus communis polyurethane resin-made wedge polymer.The implants were manufactured using the same size and angles of the original titanium cages, though larger distally.The modified TTA technique (TT
BACKGROUND: The central paradigm of ecological immunology postulates that selection acts on immunity as to minimize its cost/benefit ratio.Costs of immunity may arise because the energetic requirements of the immune response divert resources that are no longer available for other vital functions.In addition to these resource-based costs, mis-direct
The primary aim of every twenty-first century mining operation is to extract as much ore as possible in a safe and economical manner.Failure in mine excavation occurs when the shear Tank stress acting on the rock is greater than the shear strength of the rock mass.The stability of rock slopes in open-pit mine and quarry operations is extremely impo
Summary: Background: Although dementia is associated with non-participation in cognitive and social activities, this association might merely reflect the consequences of dementia, rather than any direct effect of non-participation on the subsequent incidence of dementia.Because of the slowness with which dementia can develop, unbiased assessment of