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Gigantism

Atmosphere—Water Interaction. Although water is a very minor component of the atmosphere, less than 10 vol % of the atmosphere consisting of water, many important reactions occur ki the water droplets of cloud, fog, and rain. The atmosphere is an oxic environment ki its water phase, gigantic quantities of reductants, such as organic substances, Fe(II), SO2, CH SCH (dimethyl sulfide), and nitrogen oxides, are oxidized by oxidants such as oxygen, OH radicals, H2O2, and Fe(III). [Pg.212]

Some mycehal fermentations exhibit early sporulation, breakup of mycehum, and low yields if the shear is excessive. A tip speed or 250 to 500 cm/s (8 to 16 ft/s) is considered permissible. Mixing time has been proposed as a scale-up consideration, but httle can be done to improve it in a large fermenter because gigantic motors would be required to get rapid mixing. Culturing cells from plants or animals is beset by mixing problems because these cell are easily damaged by shear. [Pg.2140]

Riesen-, gigantic, colossal. -schlange, /. python, boa constrictor, anaconda, -zelle, /. giant cell. [Pg.366]

The Big Bang Theory is the prevailing theory of the origin of the universe, and it is based on astronomical observations. According to this theory, about 15 billion years ago all the matter and energy in the visible universe was concentrated in a small, hot, dense region, which flew apart in a gigantic explosion. [Pg.154]

The move toward gigantic hydroelectric developments accelerated in the 1930s, especially in the United States and the Soviet Union, as government-sponsored projects replaced privately funded projects. The Unieprostroy hydroelectric plant in the Soviet Union, completed in 1932, was equipped with nine... [Pg.699]

The simplest synthetic polymers are those that result when an alkene is treated with a small amount of a radical as catalyst. Ethylene, for example, yields polyethylene, an enormous alkane that may have up to 200,000 monomer units incorporated into a gigantic hydrocarbon chain. Approximately 14 million tons per year of polyethylene is manufactured in the United States alone. [Pg.240]

The movement of Earth s crustal plates and the continents they contain - continental drift -has had enormous effects on climate, sea levels, and the distributions of organisms. Mass extinctions of organisms have usually accompanied major drops in sea levels. The collision of all the continents to form the gigantic landmass called Pangaea about 260 million years ago, triggered massive volcanic eruptions. The volcanoes... [Pg.41]

Baleizao C, Gigante B, Garcia H, Corma A (2002) Green Chem 4 272... [Pg.188]

Gigante B, Corma A, Garda H, Sabater MJ (2000) Catal Lett 68 113... [Pg.188]

This, at first glance innocuous-looking functional FHK[p] is the holy grail of density functional theory. If it were known exactly we would have solved the Schrodinger equation, not approximately, but exactly. And, since it is a universal functional completely independent of the system at hand, it applies equally well to the hydrogen atom as to gigantic molecules such as, say, DNA FHK[p] contains the functional for the kinetic energy T[p] and that for the electron-electron interaction, Eee[p], The explicit form of both these functionals lies unfortunately completely in the dark. However, from the latter we can extract at least the classical Coulomb part J[p], since that is already well known (recall Section 2.3),... [Pg.52]

Gigantism A condition of abnormal size or overgrowth of the entire body or of any of its parts. [Pg.1567]

Abstract The market of Diesel vehicles in Western Europe is, presently, still growing. In Asia, this market is still in an embryonic state (but should result as gigantic), while tomorrow the USA could become The Market . Diesel technology is an important issue for the carmakers, because it emits noticeably less Greenhouse gas than its gasoline counterpart. [Pg.211]

The two previous sections covered gels whose structure is formed through covalent cross-links these gels are basically gigantic molecules of macroscopic di-... [Pg.502]

A vital event in the further development of the Earth was its collision with a smaller planet, possibly as big as Mars. It is assumed that this gigantic collision took place between four and four and a half billion years ago (Sleep et al., 2001), and that it also resulted in the birth of our moon (Luna), which was formed from partially vaporized matter from the Earth. It is likely that not all of the proto-Earth was melted by the energy set free in the collision, but that sections of it remained in their original form. However, more exact information is not yet available. [Pg.30]

The hydrothermal systems, hundreds of meters under the surface of the ocean, would have protected evolving systems from the high-energy cosmic radiation as well as from meteorite impacts. Even partial evaporation of sea water, due to gigantic impacts, could have been resisted by molecular systems present at great depths (Holm and Andersson, 1995). [Pg.186]

G., Raschack, M., Cappelletto, B., Gigante, M., Boiocchi, M., Structure—activity relationship of verapamil analogs and reversal of multidrug resistance, Biochem. Pharmacol. 1995, 50, 1245-1255. [Pg.492]


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