This chapter contains sections titled: The Aztecs and Their Kings Nezahualcoyotl: Renaissance Man of Aztec Culture The Uses of Nezahualcoyotl: Bridging Spanish and Aztec Cultures Nezahualcoyotl's Place, and the Place of Gardens, in Aztec Political History Texcotzingo Notes.

Abstractβ1,4‐galactosyltransferase is unusual among the glycosyltransferases in that it is found in two subcellular compartments where it performs two distinct functions. In the trans‐Golgi complex, galactosyltransferase participates in oligosaccharide biosynthesis, as do the other glycosyltransferases. On the cell surface, however, galactosyltransferase associates with the cytoskeleton and functions as a receptor for extracellular oligosaccharide ligands. Although we now know much regarding galactosyltransferase function in these two compartments, little is known about how it is targeted to these different sites. By cloning the (...) galactosyltransferase gene products, certain features of the protein have been identified that may be critical for its expression on the cell surface or retention within the Golgi complex. This article discusses recent studies which suggest that a cytoplasmic sequence unique to one galactosyltransferase isoform is required for targeting a portion of this protein to the plasma membrane, enabling it to function as a cell adhesion molecule. These findings allow one to manipulate surface galactosyltransferase expression, either positively or negatively, and perturb galactosyltransferase‐dependent cellular interactions during fertilization and development. (shrink)

In the last decade the public health movement has bolstered efforts to prevent interpersonal violence through bringing social policy attention and needed dollars to prevention initiatives. Features in a public health approach to prevention include an evidence-based conception of the risks and so-called ?protective? factors associated with the unwanted problem and the use of sophisticated evaluation tools to monitor prevention efforts. This article critically reviews public health prevention methodology as applied to interpersonal violence prevention at the primary level through drawing (...) on findings from a qualitative inquiry into the moral dimensions of violence prevention education. It examines the premise that an empirical evidence base can determine what is desirable in relationships, together with the assumption that expert violence prevention educators can use this evidence to teach others about relationship desirability. In relying on a scientific and empirical evidence base, it is argued that the public health prevention model fails to recognize important moral dimensions of human relationships. (shrink)

The ethics of research projects has become a central aspect in the discussion of how research is conceived and planned in social work and the broader social sciences. Ethics committees play an impo...