Power transformers are applied throughout the power system to connect systems of different voltage to one another. Since a ratio differential relay offers high sensitivity in detection of internal faults in power transformers, it is widely used in the main protection system. The use of nonlinear devices such as rectifiers and other devices utilizing solid state switching have been increased in industry during recent years. For nonlinear loads, the load current is not proportional to the instantaneous voltage. This situation creates harmonic distortion on the system. The harmonic could differential relay misoperation if not recognized. This paper aims at analyzing and probing into the influences of harmonics on a ratio

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reproduced in whole or in part, by photocopy or other means, without the permission of the author. Drawing upon field work, mass media accounts, and Canadian government internal documents, this thesis considers how settler/Aboriginal power relations were reproduced when Taiwan Aboriginal artefacts

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This article describes the approach developed in the authors ’ master thesis; Mapping and

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This report was written at the International Space University by the seventh Master of Space Studies class and was published in July 2002 Additional copies of the Final Report or the Executive Summary for this project may be obtained from the International Space University (ISU). The Executive

d The sporulation network detects transient gene dosage imbalance during replication d Negative feedback leads to pulsatile activation of sporulation master regulator d Pulsed response couples sporulation and DNA replication d Gene translocations eliminating pulses lead to sporulation defects

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