A Destroying Vacuum

Destroying Civilization, Destroying Nature

Permutations Destroying Arithmetic Structure

Given a linear form C1X1 + · · · + CnXn, with coefficients in the integers, we characterize exactly the countably infinite abelian groups G for which there exists a permutation f that maps all solutions (α1, . . . , αn) ∈ Gn (with the αi not all equal) to the equation C1X1+ · · ·+CnXn = 0 to non-solutions. This generalises a result of Hegarty about permutations of an abelian group avoiding arit...

Destroying Biological Hazards

Destroying Biological Hazards Anthrax. Mad Cow Disease. Biological Weapons. These words have filled headlines, increasing anxiety around the world. The threat of such biological hazards, both natural and man-made, has created unprecedented challenges for public health institutions and hospitals, as well as for national defense. These biohazards demand fast and effective decontamination techniques.

Methods of destroying bacterial spores

The spores of Bacillus spp. are found widely distributed in nature, which may cause contamination of the environment and eventually diseases to humans and animals. The formation of the bacterial spore is a sophisticated mechanism by which some bacteria remain viable inadequate when subjected to survival stress such as lack of nutrients. The spores are highly resistant to heat, radiation, variou...

Flooding Countries and Destroying Dams

In many applications of terrain analysis, pits or local minima are considered artifacts that must be removed before the terrain can be used. Most of the existing methods for local minima removal work only for raster terrains. In this paper we consider algorithms to remove local minima from polyhedral terrains, by modifying the heights of the vertices. To limit the changes introduced to the terr...