High prevalence of HIV, HBsAg and anti-HCV positivity among people who injected drugs: results of the first bio-behavioral survey using respondent-driven sampling in two urban areas in Mozambique

Abstract Background Few countries in sub-Saharan Africa know the magnitude of their HIV epidemic among people who inject drugs (PWID).This was the first study in Mozambique to measure prevalence of HIV, HBV, and HCV, and to assess demographic characteristics and risk behaviors in this key population.Methods We used respondent-driven sampling (RDS)

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Multiple objects interacting with a solidification front

Abstract The interaction of objects suspended in a liquid melt with an advancing solidification front is of special interest in nature and engineering sciences.The front can either engulf the object into the growing crystal or repel it.Therefore, the object-front confrontation can have a strong influence on the microstructure and mechanical or func

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Torsion vibration model and vibration character analysis of rolling skid based on the twenty-high rolling mill

The fluctuation of rolling speed and the torsion variation of the main drive click here shaft are inevitable in the rolling process,which leads to the rolling skid between the roll and the strip.The skid will significantly influence the surface quality of the strip.The dynamic rolling skid model was established for the drive system here of Sendzimi

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