Results of an exploratory research project elaborating the contexts, patterns and specific scenarios of the commercial sexual activity of northeastern Thai men are reported. Data were collected using face-to-face surveys, focus groups, key informant interviews and observations in 32 northeastern villages (n = 744 men), 18 migrant labour camps housing sugarcane workers (n = 219 men), and five ca...

With more clinical trials involving evaluations of new drugs or vaccines, monitoring for early detection of adverse events is essential. The overall goal of this study was to develop an interactive-computer system using cell phones for real-time collection and transmission of adverse events related to metronidazole administration among female sex workers (FSW) in Peru. We developed an applicati...

The present work demonstrates that friction stir welding (FSW) is a feasible route for joining 6061 aluminium (Al) alloy to AISI 1018 steel. The weld has a good weld quality and is free of cracks and porosity. The tensile failure happened at the boundary between the nugget and thermomechanically affected zone of the base Al alloy, indicating that the weld has a higher joining strength. Despite ...

Friction stir welding (FSW) is a joining process where the regulation of some technological parameters, like machining forces and tool velocities, is essential to ensure the required product quality. Therefore industrial robots are often equipped with force sensors in order to have a monitoring of the interaction forces between the rotating tool and the sheets metal. Alternatively a mathematica...

OBJECTIVES Although antiretroviral therapy (ART) prolongs life and reduces infectiousness, in some contexts, it has been associated with increased sexual risk taking. DESIGN Retrospective case-control study. SETTING Nairobi-based dedicated female sex worker (FSW) clinic. PARTICIPANTS HIV-infected FSWs before and after ART initiation (n=62); HIV-infected and -uninfected control FSWs not st...

Friction stir welding (FSW) was applied to a 10 mm-thick plate for the Fe-15Mn-10Cr-8Ni-4Si seismic damping alloy. A sound FSW joint obtained successfully without macro-defects such as groove-like defects and tunnel holes. However, small pores with diameters of 1–5 μm were formed owing wear tool during FSW. The decrease in heat input suppressed wear. Consequently, distribution limited border zo...

Friction stir welding (FSW) has been widely used in of low melting point metal, such as Al alloy or Cu alloy. However, high Fe alloy, it is difficult to be welded by FSW because short life price tools. Silicon nitride tool can have both long and cost. In order obtain design guideline for silicon tool, the relationship between mechanical properties was examined. Two materials which had different...

The objective of the current work is to show potential friction stir welding (FSW) and its variants join fibre-reinforced thermoplastic polymer (FRTP) composites. To accomplish that, FSW technique two other important variants, spot (FSSW) refill (RFSSW), are presented explained in a brief but complete way. Since joining FRTP composites by FSSW has not yet been demonstrated, literature review wi...

Underwater friction stir welding (UWFSW) is an advancement of conventional welding, which performed in air. The need for underwater calls more information to be explored the different materials. aim this research investigate UWFSW 2 mm titanium sheet joints their tensile and microstructural properties compare them with results (FSW) Also, nondestructive tests, such as radiography dye penetrant ...