The invention relates to a clamp for securing fireworks,especially a firework battery, during a firing operation. Theclamp comprises an articulated frame, which is formed as apolygon having four sides in form of rods and is adapted to encompass a cavity for receiving the fireworks to be fired.
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A semiconductor optical amplifier for amplifying an optical signal. The amplifier comprises an input for receiving the optical signal and an output for outputting an amplified version of the optical signal. A semiconductor active medium is provided for defining an amplification path extending betwee.....
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The invention relates to a method for indexing and retrieving multimedia data. In particular the invention provides a method of comparing at least two sets of multimedia data using shape information in order to provides a dissimilarity measure between the sets. The invention finds use in retrieving .....
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The present invention relates to a nanocrystalline photocatalyst active upon visible light irradiation, with a high degree of dispersion, stable in the form of a transparent colloidal solution in an aqueous environment, containing nanocrystals of titanium dioxide (TiO2) surface-modified via direct c.....
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Was used for long time by the bigger telecommunication company in Brazil. This use was intensive during about six yeares, without legal authorization while it was being discussed in the Brazil Trade Mark Office (INPI). This great company was forced to stop using. It was a long dispute. There are sti.....
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