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from article Regolith
Diagram showing the components of residual regolith.
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from article Manganese
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from article Oscillatory reaction
Oscillatory behavior in a sulfuric acid medium containing potassium bromate, malonic acid, and cerous nitrate. The upper curve is the potential (in unspecified units) of a tungsten electrode and is related to the concentration ratio of…
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from article Oscillatory reaction
Rotating spiral bands of oxidation in a thin layer of solution containing the same reagents as in Fig. 1 except that the redox indicator ferrous phenanthroline has been substituted for cerous ion. (Courtesy of Prof. A. T. Winfree, University of…
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from article Oscillatory reaction
Layers of crystallization from an initially uniform magma in the Skaergaard Intrusion in Greenland. (From A. R. McBirney and R. M. Noyes, Crystallization and layering of the Skaergaard Intrusion, J. Petrol., 20:487–554, 1979)
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from article Sol-gel process
Flow chart showing the sol-gel methods used to prepare bulk glasses, thin films of glass or ceramics, and powders; the powders are then sintered to produce ceramics.
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from article Behavioral psychophysics
Diagram of the apparatus for measuring the pigeon's absolute visual threshold. (After D S. Blough, A method for obtaining psychophysical thresholds from the pigeon, J. Exp. Anal. Behav., 1:31–43, 1958)
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from article Turnip
Purple Top turnip (Brassica rapa). (Credit: Stami Kieren Donovan; courtesy of Greenpatch Organic Seeds, Glenthorne, New South Wales, Australia)
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from article Dill
Flowering of dill (Anethum graveolens). (Photo courtesy of Forest and Kim Starr)
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from article Surface and interfacial chemistry
Scheme for reducing bacterial adhesion at an implanted biomaterial.
