Low-frequency ultrasound attenuation in sodium chlorate crystals

[Lethal sodium chlorate poisoning of two newborn].

Kinetics and disposition of orally dosed sodium chlorate in sheep.

Experiments were conducted in sheep to determine excretory characteristics of sodium chlorate after a single oral dose. In Exp. 1, lambs (n = 16; age = 8.1 ± 1.7 d; BW = 8.2 ± 1.1 kg; mean ± SD) were dosed orally with 0, 30, 60, or 90 mg/kg BW of sodium chlorate. Twenty-four hours after exposure chlorate residues were dose dependent (P < 0.05) in small intestinal contents, serum, and urine, but...

Glassy Crystals Low-frequency and Low-temperature Properties a

Glasses are amorphous like liquids, but are rigid like crystals. To a chemist, this may seem natural: silicon dioxide, when covalently bonded into a well-relaxed random network, should resist deformations as an elastic solid just as it would in a crystalline network. To a theoretical physicist, this is more mysterious. What broken symmetry’ causes the rigidity‘! Of course, the chemist may in th...

Low-frequency dispersion and attenuation in partially saturated rocks

A theory is developed for the attenuation and dispersion of compressional waves in inhomogeneous fluid-saturated materials. These effects are caused by material inhomogeneity on length scales of the order of centimeters and may be most significant at seismic wave frequencies, i.e., on the order of 100 Hz. The micromechanism involves diffusion of pore fluid between different regions, and is most...

Enantiomorphic symmetry breaking in crystallization of molten sodium chlorate.

Enantiomorphic symmetry breaking of stirred samples of molten sodium chlorate is demonstrated, revealing the unexpected involvement of an achiral solid phase. The results should stimulate future computational models of nucleation, including symmetry breaking, and have implications for mechanisms that invoke enantiomorphism in natural minerals to explain biohomochirality.