Knots, Splices and Rope-Work
Автор: A. Hyatt Verrill
Год издания: 0000
This well-illustrated treasury of practical and ornamental knots ranges from simple-to-make squares, reefs, half-hitches, and bow-lines, to intricate rope-work projects, such as single and tucked crowns, rope buckles, and cask slings. Detailed instructions accompany the 148 drawings, which show how each knot, tie, or splice is formed, as well as its appearance when complete.Author A. Hyatt Verrill was an adventurer, inventor, and editor of the popular early-twentieth-century magazine American Boy. His clear directions explain all manner of rope work: simple knots and bends; ties and hitches; nooses, loops, and mooring knots; shortenings, grommets, and selvagees; lashings, seizing, splices; fancy knots and more.This practical guide offers scouts, sailors, and campers a perfect instructional manual and a handy resource.
Molecular Catenanes, Rotaxanes and Knots
Автор: Jean-Pierre Sauvage
Год издания:
This journey through the fascinating world of molecular topology focuses on catenanes, rotaxanes and knots, their synthesis, properties, and applications and the theory of interlocking and interpenetrating molecules. Nearly one hundred years of progress have passed since Willstatter's speculative vision of a molecule consisting of two interlinked rings. But even today the synthesis of such structures are a challenge to the creativity of synthetic chemists. These molecules are not only of academic interest, since they occur naturally. In such molecules as DNA, knots and related topological features play a key role in biochemical processes. In addition, extensive research on the properties of polyrotaxanes and polycatenanes show potential applications as molecular magnets, wires or switches. Twelve international leading experts in the field present the broad and impressive spectrum of the topology of these molecules, from theoretical aspects and new pathways in synthesis to probing their properties. All researchers working in this interdisciplinary area, whether organic, inorganic or polymer chemists, as well as material scientists, will welcome this comprehensive and up-to-date work as an inspiring source for creative research ideas.