Background: There are different street substance users' communities (SSUCs). Typology of SSUCs in Tehran, Iran was approached in this qualitative study.Methods: Using content analysis and saturation principles, 22 street-outreach workers were recruited and interviewed. Data were analyzed using open, axial, and selective coding.Findings: Three types of SSUCs were identified. SSUCs were different...

in this study,the effect of ozonated water(0.2, 0.5, and 1 ppm) with different exposure times (5,10, and 15 min) for control of staphylococcus aureus , escherichia coli and total counts in poultry carcass, on chiller water in slaughter house were investigated. for this purpose, control samples passed chiller water(without ozone) for (5,10, and 15 min) .other examples also treated (5, 10 , and 1...

A field experiment was performed to investigate the effect of several variables on helping behavior, using the express trains of the New York 8th Avenue Independent Subway as a laboratory on wheels. Four teams of students, each one made up of a victim, model, and two observers, staged standard collapses in which type of victim (drunk or ill), race of victim (black or white) and presence or abse...

Researchers of contemporary Hong Kong cinema have tended to concentrate on the monumental, metropolitan and/or historical works of such esteemed directors as Wong Kar-Wai, John Woo and Tsui Hark. This paper focuses instead on a number of low-budget films that circulated below the radar of Chinese as well as Western film scholars but were important to local young viewers, i.e. a cluster of films...

Animal welfare depends on the possibility to express species-specific behaviours and can be strongly compromised in socially and environmentally deprived conditions. Nesting materials and refuges are very important resources to express these behaviours and should be considered as housing supplementation items. We evaluated the effects of one item of housing supplementation in standard settings ...

In the past, viewers were constrained to watch television in front of a receiver in their home. Today, people watch video at any time and in any place. A viewer can now browse video on their desktop PC, or watch a movie outdoors on a mobile handheld device, or view HDTV (High Definition Television) in their own home theater system or at Digital Cinemas within a well controlled viewing environment.

Network theory provides a powerful tool for the representation and analysis of complex systems of interacting agents. Here we investigate the United States House of Representatives network of committees and subcommittees, with committees connected according to “interlocks” or common membership. Analysis of this network reveals clearly the strong links between different committees, as well as th...

Network theory provides a powerful tool for the representation and analysis of complex systems of interacting agents. Here we investigate the United States House of Representatives network of committees and subcommittees, with committees connected according to “interlocks” or common membership. Analysis of this network reveals clearly the strong links between different committees, as well as th...