The mechanism of aqueous uranium corrosion has been studied using weight loss and hydrogen evolution measurements. Microscopic x-ray diffraction and chemical analyses were made of the corrosion product. The results indicate that uranium corrodes by forming an oxide of the type UO .... The lack of chemical balance reported by earlier workers is explained by the existence of metallic uranium in the oxide layer.

Wood pallets are increasingly stored in warehouses with drive-in or drive-through racks. A pallet needs adequate stiffness and strength to function safely under conditions where it spans the rack support rails. When the stringers run parallel to the supports, the fasteners reinforce the deckboard load-carrying ability. This report experimentally determines the effect of fasteners on pallet performance. The effect is characterized in terms of the ratio of the joint rotation modulus to a normalized deckboard bending stiffness. This approach enables the joints to be compared with pinned and rigid joints in a pallet stiffness and strength theory.

A brief account is given of the principles of dual-energy computerized tomography (DECT) and of the potential which DECT has demonstrated for the automated detection of commercial and military explosives concealed in suitcases or packages. A description of a breadboard system configured for this purpose is provided and recent advances in the state of the art in CT are discussed in the light of their potential significance for explosives detection.

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