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Vaginal rings (VRs) are new methods for continuous delivery of microbicides. This is the first study to quantitatively and qualitatively explore the acceptability of rings in Africa: 157 HIV-negative, sexually active women aged 18–35 used a placebo silicone elastomer ring for 12 weeks. They completed product acceptability questionnaires every 4 weeks. We conducted 6 exit focus group discussions with...
A 200 kHz acoustic altimeter was incorporated into the freely-falling High Resolution Profiler (Schmitt et al., 1988; Journal of Atmospheric and Oceanic Technology, 5, 484-500) for the control of weight release at dive-end for near-bottom approaches. The altimeter gave consistent returns within 100 m of the bottom. This has allowed controlled approaches to within 10 m of the bottom for the measurement...
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