Method steps: the terminal transmits a transaction request message to the data carrier. Upon receipt of the transaction request message, the data carrier emits a transaction request notification signal. If the notified transaction is not supposed to be carried out, a transaction rejection signal c.....
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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 provides a ferrite catalyst for synthesis of styrene, comprising potassium ferrite at the level of 80-99.97% and additives selected from the group comprising MgO, Al2O3, TiO2, Cr2O3, MnO2, CuO, ZrO2, CeO2, individually or as a mixture, at the level of 0,03-20% by weight. The catalyst c.....
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The FHT Stove provides switchable, fail-safe heat transfer from wood burning convector stoves to any hydronic heating circuit. A low noise fan reverses the natural upward flow of hot air around the outside of a stove, drawing heat downwards to a heat exchanger. Heat is only transferred when the fan.....
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The current chain lubrication practice consists of applying lubricants direct to the chain from lubricants container or pressure aerosol can. Without special apparatus, lubricants may fail to reach the contacting surfaces inside the pin, bushing, roller bearing and oil wastage . User tend to use ex.....
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