While the Bush administration has been pushing hard for military action to neutralize Iraq before it gets nuclear weapons, Washington has been moving much more slowly to eliminate an even more troubling nuclear threat -- the vast array of bomb-grade materials that lie poorly protected around the world, waiting for some terrorist and rogue state to buy or steal them.
For this year there is also a special emphasis on hardmetals with a symposium dealing with cemented tungsten carbides, cermets and other hard materials that lies across the four days of the conference and exhibition in Chicago….
By unveiling previously unexhibited work, Bunnell gives us the raw material that lay beneath some of the shapes that caught White's eye.
When asked whether he looked at the primary material that lay behind the accounts his reply was: A: "Can you define the primary material?" Among the questions with which he had no difficulty was: Q: "Are you Arthur Sinodinos?" A: "Yes, I am".
For example, man's first walk on the moon, coming shortly before the second edition was published in 1970, called for inclusion of a new word, "mascon," meaning the very dense material that lay just underneath the astronaut Neil Armstrong's dusty footprints.
"The main reason I made the book is to show how little we know about the livestock, crops and non-renewable materials that lie behind everyday products, or the people that make them," she explained.
Thus, the material that lies underneath the thin layer of today's soil is generally glacial debris or marine sediments exposed by postglacial uplift.
This research, carried out with the aid of colleagues Dominique Stehelin and Peter Vogt in the mid-1970s, superseded a theory that cancer is caused by viral genes, distinct from a cell's normal genetic material, that lie dormant in body cells until activated by carcinogens.
Most long-period comets--those that orbit the sun every 200 years or more--come from the Oort cloud, a mass of icy cometary material that lies outside our solar system and orbits the sun.
Previously, scientists proposed that changes in the circulation of molten material in Earth's mantle the slow-flowing material that lies between our planet's core and its crust pushed the terrain east of the Andes upward, thereby changing drainage patterns.
