Until recently the interest of plant physiologists in the structure and function of the root, as compared with the above-ground organs, was rather limited. In contrast to the data obtained from agricultural research, where the root is understood as an organ of water and nutrient uptake, recent studies on root systems have evolved as a consequence of an increase in our general knowledge of the transport of substances across biological cell membranes.
This has led to increased interest in studies of ion uptake and transport from a novel viewpoint. Parallel to this, the complexity of the...

In this distinguished collection the deeper cognitive aspects of writing systems are for the first time added to the perceptual and physiological dimensions and brought into a coherent whole. The result is a multifaceted understanding of alphabets and other scripts in which none of the major factors that shape those systems, and thus distinctively reveal attributes of the human mind, are slighted. The systems through which language is realized on the page are compared in nature and complexity with those through which language is realized as sound, and are seen in their true perspective. Long...

Antarctica is the last, most inhospitable frontier on earth, yet it presents a great number of unresolved conflicts between nations, individuals, environmentalists, scientists and business groups. The International Law of Antarctica addresses the crucial question of how international law can respond to claims that will certainly shape tomorrow's Antarctica. The author adopts a policy-oriented approach and focuses on the primary issue of determining the effective norms by which the process of value shaping and sharing develops in Antarctica, and to what extent such norms satisfy the...