shell stability
61Visbreaker — A visbreaker is a processing unit in oil refinery whose purpose is to reduce the quantity of residual oil produced in the distillation of crude oil and to increase the yield of more valuable middle distillates (heating oil and diesel) by the… …
62Formation and evolution of the Solar System — Artist s conception of a protoplanetary disk The formation and evolution of the Solar System is estimated to have begun 4.568 billion years ago with the gravitational collapse of a small part of a giant molecular cloud …
63Dreadnought — For other uses, see Dreadnought (disambiguation). The oldest remaining dreadnought, USS Texas, was launched in 1912 and is now a museum ship. The dreadnought was the predominant type of 20th century battleship. The first of the kind, the… …
64Atomic orbital — The shapes of the first five atomic orbitals: 1s, 2s, 2px, 2py, and 2pz. The colors show the wave function phase. These are graphs of ψ(x,y,z) functions which depend on the coordinates of one electron. To see the elongated shape of ψ(x,y,z)2… …
65Pauli exclusion principle — The Pauli exclusion principle is a quantum mechanical principle formulated by Wolfgang Pauli in 1925. It states that no two identical fermions may occupy the same quantum state simultaneously . A more rigorous statement of this principle is that …
66Peak oil — A logistic distribution shaped production curve, as originally suggested by M. King Hubbert in 1956 …
67Periodic trends — In Chemistry, periodic trends are the tendencies of certain elemental characteristics to increase or decrease as one progresses from one corner of the Periodic table of elements.AcidityThe Lewis acidity of each element tends to increase when… …
68Appalachian elktoe — Taxobox name = Appalachian elktoe status = CR | status system = IUCN2.3 regnum = Animalia phylum = Mollusca classis = Bivalvia ordo = Unionoida familia = Unionidae genus = Alasmidonta species = A. raveneliana binomial = Alasmidonta raveneliana… …
69Model lipid bilayer — A model lipid bilayer is any bilayer assembled in vitro, as opposed to the bilayer of natural cell membranes or covering various sub cellular structures like the nucleus. A model bilayer can be made with either synthetic or natural lipids. The… …
70Fullerene — Buckminsterfullerene C60 (left) and carbon nanotubes (right) are two examples of structures in the fullerene family …
