No abstract

Four instructional strategies for promoting the acquisition of an infinite concept class were investigated. The independent variables were: (a) probability level of exemplars and nonexemplars determined by subjects who correctly classify the instance as an exemplar or a nonexemplar; (b) matching of an exemplar to a nonexemplar so that the irrelevant attributes are similar; and (c) divergency of an exemplar with another exemplar so that all of their irrelevant attributes differ. Exemplars that share irrelevant attributes are convergent. The manipulation of the independent variables predicted four dependent variables: (a) correct classification; (b) overgeneralization; (c) undergeneralization; and (d) misconception. Undergraduate educational psychology students enrolled at Brigham Young University were selected as the 76 subjects. The four predicted outcomes were all significant at p < .01.

A family of novel chiral "calixsalen" Schiff base macrocycles R,R-H(3)L4, R,R-H(3)L5, containing three chiral diamino moieties were synthesized by an efficient self-assembly and characterized by (1)H and (13)C NMR, mass spectrometry, and X-ray diffraction. The systematic synthesis, structure, and coordination properties of the [2 + 2] and [3 + 3] Robson-type Schiff base macrocyclic mono-, di-, tri-, and tetranuclear metal complexes were explored.

No abstract

This study has demonstrated that this tumor model is an appropriate HNSCC tumor model for animal studies on HNSCC.