Conditions for unity and action: A collective vision

This paper is a collaborative effort that describes a theoretical framework for understanding the diversity of women's experiences by focusing on the lives of the four authors. The model developed looks at individual women within the social contexts of academia and community. Factors put forth that influence women's lives are: the history of each woman, the principles she lives by, the issues she recognizes as important, and the action strategies she develops to survive in an oppressive society. As a collaborative project, this paper also reflects a bond of friendship among the writers that has deepened through their collaboration.     

Visualization of dyes on thin-layer chromatography plates by means of the argon ion laser

A simple method for the detection of nanogram amounts of dyes by means of their fluorescence in the visible region of the spectrum is described. To stimulate the fluorescence, an argon ion laser with principal lines of 514.5 nm and 488.0 nm is used. The sensitivity of the technique allows the visualization of an amount of dye smaller than could be detected with either visible absorbance or ultraviolet stimulated fluorescence.