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9 hours ago · Titanium is a chemical element; it has symbol Ti and atomic number 22. Found in nature only as an oxide, it can be reduced to produce a lustrous transition metal with a silver color, low density, and high strength, resistant to corrosion in sea water, aqua regia, and chlorine .
9 hours ago · For other uses, see Wave (disambiguation). Surface waves in water showing water ripples. In physics, mathematics, engineering, and related fields, a wave is a propagating dynamic disturbance (change from equilibrium) of one or more quantities. Periodic waves oscillate repeatedly about an equilibrium (resting) value at some frequency.
9 hours ago · This enables the formation of a relatively stable benzyl-type tertiary alkyl radical in guaiazulene, which, in the presence of oxygen, would form a relatively persistent tertiary alkylperoxyl radical, having a different fate and reactivity compared to the primary or secondary alkyl/alkylperoxyl radicals attainable in CA [33,34].
1 day ago · Etymology and history Eduard Buchner By the late 17th and early 18th centuries, the digestion of meat by stomach secretions and the conversion of starch to sugars by plant extracts and saliva were known but the mechanisms by which these occurred had not been identified. French chemist Anselme Payen was the first to discover an enzyme, diastase, in 1833. A few decades later, when studying the ...
9 hours ago · Kinetic study on CO2 absorption by aqueous secondary amine + tertiary amine blends Large-size gold-aluminum alloy cluster Al12Au60 stabilized by encapsulating B12 icosahedron Latent fingerprint visualization with the novel white fluorescent fingerprint powders Learning protein-ligand unbinding pathways via single-parameter community detection ...
