Over-invasion by functionally equivalent invasive species.

Multiple invasive species have now established at most locations around the world, and the rate of new species invasions and records of new invasive species continue to grow. Multiple invasive species interact in complex and unpredictable ways, altering their invasion success and impacts on biodiversity. Incumbent invasive species can be replaced by functionally similar invading species through competitive processes; however the generalized circumstances leading to such competitive displacement have not been well investigated.

Recruitment strategies for an osteoporosis clinical trial: analysis of effectiveness.

Aim: To examine the effectiveness of a planned rapid recruitment strategy in an osteoporosis clinical trial.

Methods: Multiple recruitment methods were explored, including media advertising, searching bone density scan and X-ray results in specialist and primary practice databases, community initiatives, and generation of research centre and study-specific pamphlets.

Results: Of 246 women screened, 41 consenting to the study, only 14 were randomised.

Measurement of bone density around the Oxford medial compartment knee replacement using iDXA. A precision study.

The goal of this study was to evaluate whether the Lunar iDXA densitometer can accurately measure the bone mineral density (BMD) around the tibial component of the Oxford unicompartment knee replacement (UKR). Both knees in 20 patients were measured 3 times in the supine position with repositioning between each scan. We chose 7 regions of interest to evaluate the bone density around the implant.