Armored Group

This armored group had penetrated fifty miles into German-held... 

The implications of these deductions seem to lead to the conclusion that such structural factors as chain length, methyl groups, and double bonds influence not only the physical properties but the chemical properties of the hydrocarbon as well. Hydrocarbons are limited in their chemical reactivity. The paraffins are compounds having small affinity. The hydrocarbon molecules are armor-plated with hydrogen. Since structure plays so vital a role in the rate of combustion, there must be a fundamental difference in the relative reactivity of the hydrogen atoms. Experimental evidence that such is the case is accumulating. There are reasons to believe that methods are at hand by which the... 

Diatoms are unicellular, photosynthetic microalgae that are abundant in the world s oceans and fresh waters. It is estimated that several tens of thousands of different species exist sizes typically range from ca 5 to 400 pm, and most contain an outer wall of amorphous hydrated silica. These outer walls (named frustules ) are intricately shaped and fenestrated in species-specific (genetically inherited) patterns5,6. The intricacy of these structures in many cases exceeds our present capability for nanoscale structural control. In this respect, the diatoms resemble another group of armored unicellular microalgae, the coccolithophorids, that produce intricately structured shells of calcium carbonate. The silica wall of each diatom is formed in sections by polycondensation of silicic acid or as-yet unidentified derivatives (see below) within a membrane-enclosed silica deposition vesicle 1,7,8. In this vesicle, the silica is coated with specific proteins that act like a coat of varnish to protect the silica from dissolution (see below). The silica is then extruded through the cell membrane and cell wall (lipid- and polysaccharide-based boundary layers, respectively) to the periphery of the cell. 

Insects are animals in the class Insecta. which is part of the larger group of animals known as arthropods, meaning creatures with jointed legs. They are cold-blooded and wear their skeletons on the outside like armor. 

Despite the extensive list of potential drawbacks with existing commercial catalysts, few new WGS catalyst formulations have been commercialized in the past decades. Based on the data compiled by Armor,20,21 no new WGS catalysts were commercialized during the 1980s, while only two new catalysts were developed during the 1990s by the Siid-Chemie Group a ferrochrome catalyst promoted with Cu was developed for enhanced activity with suppressed Fischer-Tropsch by-product... 

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