Efficient ruthenium and copper cocatalzyed five-component coupling to form dipropargyl amines under mild conditions in water.

Dipropargyl amines are synthesized by a double direct alkynylation of primary followed by secondary imines formed in situ during an efficient, five-component, one-pot coupling reaction cocatalyzed by ruthenium and copper in water.

Use of heterologous cDNA arrays and organ culture in the detection of thyroid hormone-dependent responses in a sentinel frog, Rana catesbeiana.

Despite the extensive use of wildlife species in elucidating important biological processes, very few gene expression tools are available. For example, many frog species with different sensitivities and ecological niches are used as sentinel species for environmental contaminants and as developmental models. However, gene expression analyses have been essentially limited to one laboratory species.

Memory structure in the processing of advertising messages: how is unusual information represented?

Two models of memory structure--schema-copy-plus-tag (Graesser & Nakamura, 1982; Schmidt & Sherman, 1984) and associative-network/depth-of-processing (Craik & Lockhart, 1972; Hastie & Kumar, 1979)--were tested in a 2 x 2 between-subjects design. Type of argument (typical vs. atypical) and measurement interval (immediate vs.