29,436 research outputs found

    Latin American Taxes Affecting Inter-American Trade

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    Charge control of nickel-cadmium batteries by coulometer and third electrode method

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    Combined coulometer/third electrode control circuit for a nickel-cadmium battery included at least one cell of the third electrode type is illustrated. The coulometer/third electrode sensing circuit controls the series regulator as necessary to maintain the sensing voltage at the preset sensing level

    Decoherence at zero temperature

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    Most discussions of decoherence in the literature consider the high-temperature regime but it is also known that, in the presence of dissipation, decoherence can occur even at zero temperature. Whereas most previous investigations all assumed initial decoupling of the quantum system and bath, we consider that the system and environment are entangled at all times. Here, we discuss decoherence for a free particle in an initial Schr\"{o}dinger cat state. Memory effects are incorporated by use of the single relaxation time model (since the oft-used Ohmic model does not give physically correct results)

    Panel discussion: Bridging the gap technology developing flight hardware

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    The development of an engineering data base for aerospace batteries is discussed

    Nickel-cadmium battery reconditioner

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    Automatic device for recharging of nickel-cadmium batter

    “Immigrationomics”: A Discussion of Some Key Issues

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    immigration, U.S., labor

    Automatic battery formation cycler and controller

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    Automatic battery formation cycler and controller to determine charge capacity and to perform charge-discharge operations for electrochemical cells intended for satellite power source

    Recharge unit provides for optimum recharging of battery cells

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    Percent recharge unit permits each cell of a rechargeable battery to be charged to a preset capacity of the cell. The unit automatically monitors and controls a rechargeable battery subjected to charge-discharge cycling tests

    Coulometer and third electrode battery charging circuit Patent

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    Development and characteristics of battery charging circuits with coulometer for control of available curren

    Effect of an External Field on Decoherence

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    "Decoherence of quantum superpositions through coupling to engineered reservoirs" is the topic of a recent article by Myatt et al. [Nature {\underline{403}}, 269 (2000)] which has attracted much interest because of its relevance to current research in fundamental quantum theory, quantum computation, teleportation, entanglement and the quantum-classical interface. However, the preponderance of theoretical work on decoherence does not consider the effect of an {\underline{external field}}. Here, we present an analysis of such an effect in the case of the random delta-correlated force discussed by Myatt et al
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