| http://www.w3.org/ns/prov#value | - K- and S-class asteroids have moderate albedos and spectral reflectances similar to the stony iron meteorites, and they are known to contain significant amounts of silicates and metals, including the......K-complex (sleep)...by the appearance of relatively high-voltage (more than 75-microvolt) low-frequency (0.5???2.0-Hz) biphasic waves, called slow waves.
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