Abstract: Disclosed herein is a hierarchical data storage and retrieval system implemented using a computed statistically unique signature for the content of given computer data as its basis. The data storage and retrieval system can be used to catalog computer information for easy indexing and retrieval. The signature is computed by any number of techniques so long as it is able to produce a statistically unique signature, one example being the SHA-1 algorithm. The system is able to reduce the amount of data that is stored and the time required for retrieving the data. Provide a way to move electronic data in an encrypted secure manner that requires the complete data set being moved for decryption of the data. Even if a portion of the data is compromised that portion would still remain secure. The data is encrypted and separated into two or more portions all of which would be needed to decrypt the data.

Abstract: A catalyst precursor is prepared by intimately mixing a nickel-aluminium Feitknecht compound with a non-calcined aluminosilicate clay mineral and at the same time and/or subsequently with at least one additive comprising an alkaline earth and/or rare earth metal compound. The resulting mixture is then calcined to produce the catalyst precursor which can be reduced to the catalyst form. The catalyst may be used, for example, in the methanation of gases and the presence of the additive reduces silicon species loss from the catalyst during use.

Abstract: Silicon containing methanation catalysts e.g. those prepared by coprecipitation techniques, may be stabilized to prevent leaching of silicon species by a hydrothermal treatment comprising heating the reduced catalyst in a steam reducing gas atmosphere, lowering the temperature until liquid water species condense out, reheating to evaporate the condensed water and passivation in a mildly oxidizing atmosphere.

Abstract: A brake cable coupling means for a rear wheel scissor hand brake activated by a cable which is pulled away from the brake to cause the scissoring against the rear wheel rim. The brake cable coupling means includes an inner rotatable member slidably mounted on the stem of the front fork of the bicycle and a separate cable portion extending to a hand brake handle mounted on the handle bar. An outer sleeve member surrounds the inner rotatable member with another cable portion secured thereto and extending to said brake. Alternatively bearing means may be interposed between the inner member and the outer sleeve or form a part of said outer sleeve. The inner sleeve member includes means to move said outer sleeve and said bearing means vertically upwardly therewith to activate said brake. The brake cable coupling means is activatable no matter what degree of rotation the front wheel of the bicycle is turned relative to the location of the respective cable portions.