Bis- and tris-Lewis acids, based on alkynylsilanes with terminal boron functions, were prepared tested for their ability to accept neutral Lewis base molecules.

The legacy of Gilbert Newton Lewis (1875-1946) pervades the lexicon of chemical bonding and reactivity. The power of his concept of donor-acceptor bonding is evident in the eponymous foundations of electron-pair acceptors (Lewis acids) and donors (Lewis bases). Lewis recognized that acids are not restricted to those substances that contain hydrogen (Brønsted acids), and helped overthrow the "mo...

We have shown previously that the mucins of the human pancreatic cancer cell line, SW1990, have both sialyl-Lewis(a) and sialyl-Lewis(x) carbohydrate ligands that are implicated in tumor cell metastasis. In the present study, we undertook to identify the protein core of these mucins. SW1990 mucins that carry sialyl-Lewis(a) and sialyl-Lewis(x) bound to the MUC1 peptide-specific mAb 139H2. Remov...

©AsiaPacific MediaEducator Issue No.11 July Dec. 2001 T paper discusses some fundamental assumptions about pluralism in the Australian print media. Pluralism, the number of print media outlets available to the public, and known as structural diversity, can be considered as one of two elements of media diversity. The other is the variety of views presented by those outlets, known as content dive...