Construction of a roller device for the collection of hair and fiber evidence.

The discovery of hair and fiber evidence can be of critical importance in the investigation of crimes, particularly violent crimes. A procedure is described for the construction and assembly of a roller device that utilizes readily available components and single-sided adhesive tape. The advantages over previously described roller devices include decreases in both the potential for contamination and the time required for construction of the device, as well as the ability to disinfect all of the roller components.     

Trends in the proportion of married women of reproductive age in Spain, 1887–1991

Using the Princeton nuptiality index I_m, we analyzed historical developments in the proportion of married women of reproductive age in Spain. We show the internal diversity in nuptiality patterns and offer an explanatory statistical model based on panel data analysis to identify the main variables influencing these changes over more than a century (1887–1991). We found that Spain has been the developed country with the greatest contrasts in its provincial nuptiality patterns (measured by I_m), although this diversity has lessened over the course of time. We also found that some socioeconomic variables (the gross domestic product per capita and the percentage of population living in cities) do not have a linear relationship with female nuptiality but rather have a U shape or an inverted U shape. This may partly account for some of the controversy that has raged on this topic over the past few decades on an international level.