To optimize the tool geometry (Pin profile) and process parameters for the FSW process. In the present investigation, an attempt has been made to understand the effect of rotational speed, welding speed and there different pin profiles on the nugget zone formation in AA 6063-T4 aluminum alloy. Three different tool pin profiles (tapered cylindrical, tapered square and square) have been used to f...

OBJECTIVES To assess HIV and syphilis prevalence, HIV-related behaviours and testing for HIV in female sex workers (FSW) in Sudan. DESIGN Bio-behavioural surveys using respondent-driven sampling were carried out among FSW in the capital cities of 14 states in Sudan in 2011-2012. HIV and syphilis testing was done by rapid tests. RESULTS 4220 FSW aged 15-49 years were recruited. The median ag...

BACKGROUND As part of a community-randomized trial of a multicomponent intervention to prevent sexually transmitted infections, we created Mobile Teams (MTs) in ten intervention cities across Peru to improve outreach to female sex workers (FSW) for strengthened STI prevention services. METHODS Throughout 20 two-month cycles, MTs provided counseling; condoms; screening and specific treatment f...

Hepatitis B virus (HBV) infection is endemic in Nigeria and constitutes a public health menace. The prevalence of HBV infection in many professional groups has been described in Nigeria. However, literature on HBV infection among female sex workers (FSW) in Nigeria is scanty. FSW in Nigeria are not subjected to a preventive control of HBV infection. This study assesses the extent of spread of H...

OBJECTIVE To ascertain the cost effectiveness of targeted interventions for female sex workers (FSW) under the National AIDS Control Programme in India. METHODS A compartmental mathematical Markov state model was used over a 20-year time horizon (1995-2015) to estimate the cost effectiveness of FSW targeted interventions, with a health system perspective. The incremental costs and effects of ...

Friction stir welding (FSW) is a relatively new, solid-state, metal joining process invented by Wayne Thomas et al. at the Welding Institute of England (now TWI) in 1991 [1.] A FSW butt weld is made by following the joint-line of two butted pieces of material with a rotating tool while applying a significant down-force through the tool. Heating is provided at or near the tool-work interface by ...

The technological development of all kinds of lightweight transportation devices including vehicles, aircraft, ships, etc. has progressed markedly with the demand for energy saving and environmental protection. Aluminum alloy is in the spotlight as it is a suitable environmentally friendly material. However, deformation is a major problem during the welding process because aluminum alloy has a ...